US20070218097A1 - Subcutaneous Glucose Electrode - Google Patents
Subcutaneous Glucose Electrode Download PDFInfo
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- US20070218097A1 US20070218097A1 US11/695,611 US69561107A US2007218097A1 US 20070218097 A1 US20070218097 A1 US 20070218097A1 US 69561107 A US69561107 A US 69561107A US 2007218097 A1 US2007218097 A1 US 2007218097A1
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
- C12Q1/00—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
- C12Q1/54—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving glucose or galactose
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue
- A61B5/14532—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue for measuring glucose, e.g. by tissue impedance measurement
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue
- A61B5/1486—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue using enzyme electrodes, e.g. with immobilised oxidase
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue
- A61B5/1495—Calibrating or testing of in-vivo probes
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
- C12Q1/00—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
- C12Q1/001—Enzyme electrodes
- C12Q1/005—Enzyme electrodes involving specific analytes or enzymes
- C12Q1/006—Enzyme electrodes involving specific analytes or enzymes for glucose
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S435/00—Chemistry: molecular biology and microbiology
- Y10S435/817—Enzyme or microbe electrode
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S435/00—Chemistry: molecular biology and microbiology
- Y10S435/8215—Microorganisms
- Y10S435/911—Microorganisms using fungi
- Y10S435/913—Aspergillus
- Y10S435/917—Aspergillus niger
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S435/00—Chemistry: molecular biology and microbiology
- Y10S435/962—Prevention or removal of interfering materials or reactants or other treatment to enhance results, e.g. determining or preventing nonspecific binding
Definitions
- the present invention relates to in vivo enzyme biosensors and more specifically to miniature glucose sensors for subcutaneous measurement of glucose with one-point calibration.
- in vivo glucose electrodes In response to the need for frequent or continuous in vivo monitoring of glucose in diabetics, particularly in brittle diabetes, a range of possible in vivo glucose electrodes have been studied.
- the desired characteristics of these electrodes include safety, clinical accuracy and reliability, feasibility of in vivo recalibration, stability for at least one hospital shift of eight hours, small size, ease of insertion and removal, and a sufficiently fast response to allow timely intervention.
- the in vivo recalibration should be based upon withdrawal of a single sample of body fluid, e.g., blood, and measuring its glucose concentration. This is termed “one point calibration”.
- the sensitivity must be sufficiently stable for the frequency of required in vivo recalibration to not be excessive.
- the sensor must be small enough to be introduced and removed with minimal discomfort to the patient and for minimal tissue damage. It is preferred that the sensor be subcutaneous and that it be inserted and removed by the patient or by staff in a physician's office. Finally, its response time must be fast enough so that corrective measures, when needed, can be timely.
- two-electrode differential measurements were used, one electrode being sensitive to glucose and electrooxidizable interferants and the other only to interferants.
- One strategy for overcoming the problem of interferants, applicable also to the present invention involves their preoxidation.
- Another strategy involves shifting, through chemical changes, the redox potential of the polymer in the sensing layer to more reducing potentials.
- the rate of electrooxidation of interferants such as ascorbate, urate, and acetaminophen is very slow relative to that of glucose through its physiological concentration range.
- the currents from electrooxidation of interferants are small relative to those of glucose.
- hydrophilic polyurethanes poly(vinyl alcohol) and polyHEMA membranes have been used.
- Diffusional mediators through which the O 2 partial pressure dependence of the signals is reduced, are leached from sensors. Such leaching introduces an unwanted chemical into the body, and also leads to loss in sensitivity, particularly in small sensors. In microsensors, in which outward diffusion of the mediator is radial, the decline in sensitivity is rapid.
- This problem has been overcome in “wired” enzyme electrodes, i.e., electrodes made by connecting enzymes to electrodes through crosslinked electron-conducting redox hydrogels (“wires”).
- Glucose oxidase has been “wired” with polyelectrolytes having electron relaying [Os(bpy) 2 Cl] +/2+ redox centers in their backbones.
- Hydrogels were formed upon crosslinking the enzyme and its wire on electrodes. These electrodes had high current densities and operated at a potential of 0.3V vs. SCE.
- the electrooxidizable interferants are eliminated through peroxidase-catalyzed preoxidation in a second, nonwired, hydrogen peroxide generating layer on the “wired” enzyme electrode.
- the electrode was constructed by depositing active polymer layers into a recess formed by etching away gold from an insulated gold wire.
- the active polymer layers including a sensing layer, a glucose flux-limiting layer, a biocompatable layer, and optionally a peroxidase-based interferant eliminating layer, were protected within the recess against mechanical damage.
- the peroxidase-based interferant eliminating layer is not required when a lower redox potential polymer is used, as described above.
- the recess and its polymer layers also reduced the transport of glucose to the wire electrode contacting sensing layer.
- the inventive biosensors are able to accurately measure, for example, approximately 2-30 m ⁇ glucose and approximately 0.5-10 m ⁇ lactate, in vivo.
- the sensor has no leachable components, and its four crosslinked polymer layers contain only about 5 ⁇ g of immobilized material, and only a few nanograms of polymer-bound osmium. Preoxidation of the interferants in one of the four layers makes possible one-point in vivo calibration of the sensor.
- FIG. 1 is a schematic drawing of an electrode of the present invention.
- FIG. 2 is a graphical representation of data generated comparing current density of glucose electrooxidation on electrodes made with PVI 5 -Os (open triangles) with those made with PVI 3 -Os (filled triangles).
- FIG. 3 is a graphical representation of data generated comparing dependency of current generated on the depth of the recess.
- FIG. 4 is a graphical representation of data generated comparing dependency of the ratio of the current generated and the charge required to electoreduce or oxidize the polymer redox centers in the sensing layer on the thickness of the sensing layer.
- FIG. 5 is a graphical representation of data generated comparing variation of current generated by electrodes having sensing layers of differing thickness and diffusion limiting layers of different compositions and thickness.
- Solid circles 7.5 ⁇ m thick sensing layer of PVI 5 -Os (52%), rGOX (35%), PEGDGE (13%), coated with 4 ⁇ m PAL/PAZ (1:1 ratio).
- Solid triangles 12.5 ⁇ m sensing layer and 7 ⁇ m PAL/PAZ (1:2 ratio).
- FIG. 6 is a graphical representation of data generated comparing dependency of current generated on the presence of ascorbate, in the absence and presence of lactate and glucose.
- concentrations of ascorbate (A), lactate (L) and glucose (G) are shown.
- Ascorbate is an electrooxidzable interferant. Upon addition of lactate its electrooxidation current is suppressed while that of glucose is not suppressed.
- FIG. 7 is a graphical representation of data showing current density and corresponding subcutaneous glucose concentration measured with the subcutaneously implanted electrodes of the present invention in a rat animal model. Large solid circles show blood glucose concentrations measured on withdrawn blood samples using a YSI analyzer.
- FIG. 8 is a Clarke-type clinical grid analyzing the clinical relevance of the blood glucose measurements of FIG. 7 .
- FIG. 9 is a Clarke-type clinical grid of all possible correlations obtained when each of the 24 glucose analyses of FIG. 7 were used for single point calibration of either implanted electrode.
- FIG. 10 is a Clarke-type clinical grid testing improvement of the single point calibration through redundant electrodes, the readings of which were within the standard deviation calculated for all differences between simultaneous readings by a pair of implanted electrodes.
- the present invention includes an insulated, non-corroding conducting metal (e.g., gold, platinum, palladium) or carbon wire-based small (e.g., 290 ⁇ m) O.D. subcutaneous glucose sensor, allowing one-point calibration in vivo. As shown in FIG.
- a small (e.g., 250 ⁇ m) diameter non-corroding metal or carbon wire 2 with an electrically insulating material 4 , e.g., a polyimide, and, layering in a recess 6 formed by etching or removing a portion of the metal or carbon, the following active polymeric layers: an immobilized, “wired,” glucose oxidase layer 8 ; an electrically insulating and glucose diffusion limiting layer 10 formed, for example, by crosslinking a polyallylamine (PAL) with a polyaziridine (PAZ); optionally, an interference eliminating layer 12 , e.g., of crosslinked horseradish-peroxidase and lactate oxidase; and a biocompatible film 14 e.g., of poly(ethylene oxide) (PEO) derivatized to allow its photo-crosslinking.
- an electrically insulating material 4 e.g., a polyimide
- an electrically insulating material 4 e.g.
- the outside diameter a of the wire 2 is preferably about 0.25 mm or less, and the outside diameter b of the insulated wire is preferably about 0.3 mm or less.
- the recess 6 in the insulated electrode extends from the tip 16 of the electrode which is open to the surrounding environment, to the top 18 of the wire 2 in the insulating sheath, generally for a length c of less than about 0.150 mm, and preferably about 0.125 mm.
- the electrodes have no leachable components.
- the total amount of polymers and enzymes is preferably about 5 ⁇ g.
- the glucose response through the physiologically relevant 2-20 mM concentration range is close to linear.
- the electrodes do not respond to ascorbate, urate or acetaminophenol for at least about 36 hours.
- Their 10-90% response time is about 90 seconds at 2 mM glucose and about 30 seconds at 20 mM glucose.
- Their sensitivity, after about 30 minutes equilibration, is stable for about 72 hours at 37° C. in 10 mM glucose, the current deviating from the average by less than .+ ⁇ 0.5%.
- the electrodes have substantially no signal output, e.g., current, charge, or potential, when the concentration of the analyte to be measured is zero.
- Analysis of the correlation between the blood glucose levels in the tail vein and the current output of the sensors in the subcutaneous regions of the thorax and between the scapulae of the same rat showed that even when the probed sites and organs differed in the extreme, one point in vivo calibration was valid.
- the analysis also showed the value of implanting redundant sensors. Had clinical decisions been made based on individual sensor readings, calibrated at one point, 94% would have been clinically correct. By using redundant sensors and accepting only those pairs of readings that were within one standard deviation, the percentage of the clinically correct decisions was increased to 99%.
- the base electrode of the inventive sensor may be formed of a non-corroding metal or carbon wire, for example vitreous carbon, graphite, platinum, palladium, or gold. Gold is preferred, and is used in the following illustrative examples of the invention.
- the conductive metal or carbon wire is coated with an electrically insulating material, which also forms a wall about the recess which houses the active polymeric components.
- the insulating material may be, for example, polyurethane, teflon (fluorinated polymers), polyethyleneterephthalate (PET, Dacron) or polyimide.
- the insulating material is preferably a biocompatible polymer containing less than about 5% water when in equilibrium with physiological body fluids, e.g., subcutaneous tissue.
- the recess at the tip of the electrode is approximately 20 to 150 ⁇ m in length c, and preferably is approximately 50 to 125 ⁇ m.
- Etching method The method for etching metal from the tip of the electrode described herein may utilize chloride, bromide or iodide in the bath in lieu of cyamide as described. Bromide is preferred, because it is less toxic and, like Au(CN) 2 —, AuBr 4 ⁇ is a water soluble anion.
- the metal e.g., gold
- glucose oxidase may be substituted with other redox enzymes to measure other relevant clinical compounds.
- lactate oxidase may be used for the in vivo detection of lactate, important in determining if an organ is receiving sufficient oxygen through the blood.
- Additional redox polymers include, for example, poly(1-vinyl imidazole); poly(4-vinyl pyridine); or copolymers of 1-vinyl imidazole such as poly (acrylamide co-1-vinyl imidazole) where the imidazole or pyridine complexes with [Os (bpy) 2 Cl]+/2 + ; [Os (4,4′-dimethyl bipyridine) 2 Cl]+/2 + ; [Os (4,4′-dimethyl phenanthroline) 2 Cl-]+/2 + ; [Os (4,4′-dimethyoxy phenanthroline) 2 Cl]+/2 + ; and [Os (4,4′-dimethoxy bipyridine) 2 Cl] +/2+ ; to imidazole rings
- the imidazole ring compounds are preferred because their complexes have more reducing redox potentials, i.e., closer to that of the SCE potential. At these more reducing potentials, the rate of electrooxidation of interferants and the current generated thereby.
- the polymeric barrier layer is electrically insulating and limits diffusion of glucose through to the sensing layer. It may be formed, for example, by crosslinking a polyallylamine (PAL) with a polyaziridine (PAZ). Alternatively, PAL may be replaced wholly or in part with a zwitterionic polymer obtained by quaternizing poly(vinylpyridine) with bromoacetate and dialyzing against 0.15M NaCl or by a polyanion such as a polysulfonic acid.
- PAL polyallylamine
- PAZ polyaziridine
- PAL may be replaced wholly or in part with a zwitterionic polymer obtained by quaternizing poly(vinylpyridine) with bromoacetate and dialyzing against 0.15M NaCl or by a polyanion such as a polysulfonic acid.
- the barrier layer may contain a polyanionic polymer, in which the rate of permeation of anionic interferants such as ascorbate and urate is slowed.
- This layer may also contain a polycation that enhances the retention of the polyanion by electrostatic bonds and improves wetting by the biocompatable layer.
- Interference Eliminating Layer As described above, this layer is optional, in that it is not required when a redox polymer having a more reducing potential is used, such as PVI 15 -dmeOs (Ohara et al., Analytical Chemistry, 1994, 64:2451-2457). At operating potentials of approximately ⁇ 0.10 to +0.25 for the glucose biosensor, the rate of electrooxidation of interferants such as ascorbate, urate and acetaminophen is very slow relative to that of glucose through its physiological concentration range.
- a redox polymer having a more reducing potential such as PVI 15 -dmeOs
- a separate interferant eliminating layer When a separate interferant eliminating layer is used, it preferably contains a peroxidase enzyme which may or may-not be preactivated.
- a peroxidase enzyme which may or may-not be preactivated.
- Such interferant eliminating layers are disclosed, for example, in U.S. Pat. No. 5,356,786, which discloses the structure and function of interferant eliminating biosensors.
- the glucose biosensor preferably contains lactate oxidase (LOX) in combination with peroxidase in the interferant eliminating layer.
- LOX lactate oxidase
- glucose oxidase would be used with peroxidase.
- the enzyme composition of the interferant eliminating layer may be altered for a specified function.
- the biocompatable layer is comprised of hydrogels, e.g., polymeric compositions which contain more than about 20% by weight of water when in equilibrium with a physiological environment such as living tissue or blood.
- hydrogels e.g., polymeric compositions which contain more than about 20% by weight of water when in equilibrium with a physiological environment such as living tissue or blood.
- An example is crosslinked poly(ethylene oxide), e.g., poly(ethylene oxide) tetraacrylate.
- the polymeric compositions must be non-toxic and compatible with living Systems.
- Insulated non-corroding metal or carbon wires that have been etched as described above to contain a recess at the tip, are placed in a block that serves as an X-Y positioner.
- the wires vertically traverse the block and are held in place, e.g., by pressure.
- the blocks with the wires can be formed of elements, each element having multiple half-cylinder grooves running vertically.
- the wires are placed in these grooves and the elements are assembled into the block using screws.
- the block may be formed of aluminum having equally spaced holes, (900 for a 30 ⁇ 30 array of wires), each hole to contain one wire.
- the block is positioned under a fixed micronozzle that ejects a fluid in to the recess of the insulated wire.
- the nozzle is electrically charged, with the wire having an opposite charge, or the wire being grounded or at least having a potential such that there is a potential difference between the nozzle and the wire. Because the nozzle is charged, the microdroplets it ejects are also charged with the same type of charge (positive or negative) as the nozzle. The higher the potential on the nozzle (e.g., versus ground potential), the higher the charge on the ejected microdroplets.
- the tip of the wire to be coated is at ground potential or has a charge of the opposite type, the charged microdroplets are guided into the recess to deposit on the electrode, even if the jet of microdroplets is not vertical, i.e., even if the micronozzle is not precisely aligned above the wire's tip.
- the droplet breaks up into two or more smaller droplets because of electrostatic repulsion of charges on the droplet.
- the very small droplets all “drift” (drift meaning transport assisted by an electrical field) to the recessed electrode surface and are collected on it, even if they did not originate in a nozzle precisely aligned with the electrode.
- This coating method is useful in making any small biosensor, not only those in recessed zones.
- the recessed biosensors of the present invention have sufficient sensitivity and stability to be used as very small, subcutaneous biosensors for the measurement of clinically relevant compounds such as glucose and lactate.
- the electrodes accurately measure glucose in the range of about 2-30 ⁇ M and lactate in the range of about 0.5-10 mM.
- One function of the implanted biosensor is to sound an alarm when, for example, a patient's glucose concentration is too low or too high. When pairs of implanted electrodes are used, there are three situations in which an alarm is triggered: low glucose concentration, high glucose concentration; sensor malfunction as determined by a discrepancy between paired readings of the two sensors.
- a discrepancy sufficient to trigger the alarm may be, for example more than two or three times the standard deviation persisting for a defined period, e.g., not less than ten minutes. Such a system may be useful in sleeping patients, and also in emergency and intensive care hospital rooms, where vital functions are continuously monitored.
- Another function of the inventive biosensors in to assist diabetics in maintaining their blood glucose levels near normal Many diabetics now maintain higher than normal blood glucose levels because of danger of coma and death in severe hypoglycemia. However, maintaining blood glucose levels substantially, e.g., approximately 40% or more above normal leads to retinopathy and blindness as well as to kidney failure.
- Use of the subcutaneous biosensors to frequently, if not continuously, monitor glucose concentrations is desirable so that glucose concentrations can be maintained closer to an optimum level.
- the subcutaneous biosensors can be used to measure the rate of rise and decline of glucose concentrations after a meal or the administration of glucose (e.g., a glucose tolerance test).
- the sensors are also useful in feedback loops for automatic or manually controlled maintenance of glucose concentrations within a defined range. For example, when used in conjunction with an insulin pump, a specified amount of insulin is delivered from the pump if the sensor glucose reading is above a set value.
- the ability to promptly confirm that the implanted sensor reading is accurate is essential. Prompt confirmation and rapid recalibration are possible only when one-point calibration is valid. Generally, even if a sensor's response is linear through the relevant concentration range, calibration requires at least two blood or fluid samples, withdrawn from the patient at times when the glucose concentration differs. It usually takes several hours for the glucose concentration to change sufficiently to validate proper functioning by two-point calibration. The ability to confirm and recalibrate using only one point is thus a highly desirable feature of the present invention.
- Redundant sensors e.g., at least two are preferred in the clinical application of the subcutaneous biosensors. Such redundancy permits signaling of failure of any one sensor by recognition of an increase in the discrepancy between the readings of the sensors at one time point, e.g., more than two standard deviations apart.
- the redundant sensors may be implanted near each other or at remote sites.
- the biosensors be implanted in subcutaneous tissue so as to make the sensor relatively unobtrusive, and at a site where they would not be easily dislodged, e.g., with turning or movement. It is also preferred, when readings are not corrected for temperature (which they generally are) that the sensors be implanted where they are likely to be at body temperature, e.g., near 37° C., and preferably covered by clothing. Convenient sites include the abdomen, inner thigh, arm.
- the electrical measurement by which the glucose concentration is monitored can be continuous or pulsed. It can be a current measurement, a potential measurement or a measurement of charge. It can be a steady state measurement, where a current or potential that does not substantially change during the measurement is monitored, or it can be a dynamic measurement, e.g., one in which the rate of current or potential change in a given time period is monitored.
- These measurements require at least one electrode in addition to the sensing electrode.
- This second electrode can be placed on the skin or can be implanted, e.g., subcutaneously.
- a potentiostat in the circuit connecting the implanted sensing electrode and the second electrode that can be a reference electrode, such as an Ag/AgCl electrode.
- the reference electrode may serve also as the counter electrode.
- the counter electrode can also be a separate, third electrode, such as a platinum, carbon, palladium or gold electrode.
- fluid from the body can be routed to an external sensor. It is preferred in this case to implant in the subcutaneous region a microfiltration giver and pull fluid to an evacuated container, the fluid traversing a cell containing the sensing electrode.
- this cell also contains a second electrode, e.g., a reference electrode which may serve also as a counter electrode.
- the reference and counter electrodes may be separate electrodes. In coulometric measurements only two electrodes, the sensing electrode and the counter electrode are required.
- the flow of body fluid may be pulsed or continuous.
- a microdialysis fiber may be used, preferably in conjunction with a pump.
- a simple measure by which the life of the implanted electrodes can be extended and the frequency of their required recalibration reduced involves turning the electrodes “on” by applying a bias, i.e., a potential, only during the period of measurement, then turning the biasing potential off or reducing it, so that a lesser current will flow. It is generally sufficient to perform only one measurement every five or even ten minutes, or longer, because glucose concentrations do not change abruptly.
- a bias i.e., a potential
- Another measure is to lower the glucose flux to the sensing layer much as possible, consistent with maintaining adequate sensitivity and detectivity. Reduction of the glucose flux to the sensing layer reduces the current. Therefore, even though this stabilizes the electrodes, i.e., slows the loss in sensitivity, the flux dependent current must not be excessively reduced. Usually a current of 3-5 nA at 2 mM glucose concentration is adequate.
- the glucose flux is lowered by using one or more glucose-flux reducing polymer slayers, such as the PAL/PAZ layer, the lifetime of the sensor is increased.
- Electrodes were made of a polyamide-insulated 250 ⁇ m diameter gold wire, having an outer diameter (O.D.) of 290 ⁇ m (California Fine Wire Co., Grover City, Calif.). Heat shrinkable tubing (RNF 100 3/64” BK and 1/16” BK, Thermofit®, Raychem, Menlo Park, Calif.) and a two component silver epoxy (Epo-tek H 2 OE; Epoxy Tech, Inc., Billerica, Mass.) were used for electrode preparation.
- the glucose sensing layer was made by crosslinking a genetically engineered glucose oxidase (rGOX) (35% purity, Chiron Corp., Emeryville, Calif.) with a polymer derived of poly(vinylimidazole) (PVI), made by complexing part of the imidazoles to [Os(bpy) 2 Cl] +/2+ .
- rGOX glucose oxidase
- PVI poly(vinylimidazole)
- the barrier layer between the sensing and interference-eliminating layers was made of polyallylamine (PAL; Polysciences) crosslinked with a polyfunctional aziridine (PAZ) (XAMA-7; Virginia Chemicals, Portsmouth, Va.).
- PAL polyallylamine
- PAZ polyfunctional aziridine
- the biocompatible layer was made of 10% aqueous poly(ethylene oxide) tetraacrylate (PEO-TA).
- PEO poly(ethylene oxide) tetraacrylate
- PEO-TA aqueous poly(ethylene oxide) tetraacrylate
- the 18,500 g/mol PEO (Polysciences) is a tetrahydroxylated compound by virtue of two hydroxyl groups on a bisphenol A bisepoxide that linked two .alpha., .omega.-hydroxy-terminated 9,000 g/mol PEO units.
- Acryloyl chloride Aldrich, Milwaukee, Wis.
- Triethylamine (Mallinkrodt, Paris, Ky.) was used as a proton acceptor equimolar with the acryloyl chloride.
- bovine serum albumin (BSA) fraction V (Cat. No. A-2153)
- BSA bovine serum albumin
- ascorbic acid uric acid
- 4-acetaminophenol 4-acetaminophenol
- L(+) lactic acid
- hydrogen peroxide 30% all from Sigma. All chemicals were used as received. Solutions (if not otherwise specified) were made with distilled, deionized water. Glucose monitoring was performed in buffer, in bovine serum (Sigma, Cat. No. S-6648) containing antibiotic-antimycotic solution (Sigma, Cat. No. A-8909) at 37° C. and in rats.
- a potentiostat/galvanostat (PAR Model 173, Princeton Applied Research, Princeton, N.J.) operated in a galvanostatic mode, and a sonicator (Fisher scientific, Pittsburgh, Pa.) were used. Cyclic voltammograms were recorded with a potentiostat (PAR Model 273A) and a conventional electrochemical cell having a Pt wire counter and a SCE reference electrode and were evaluated with PAR 270 software. Glucose signals were monitored with a bipotentiostat (Biometra EP 30) and a two channel strip-chart recorder.
- the recessed electrodes were coated under a microscope (Bausch & Lomb) using a micromanipulator (Narishige, Seacliff, N.Y.). The micropipettes were pulled with a micropipette puller (Narishige). Temperature was controlled with an isothermal circulator (Fisher Scientific).
- a recess 6 i.e., channel, in a polyamide insulated gold wire 2 is formed by electrochemical etching of the gold under galvanostatic control. By controlling the charge, the total amount of gold electrooxidized and dissolved as Au(CN) 2 is defined.
- the process is reproducible, accurate and fast with 20 electrodes being processed in each batch in less than five minutes.
- the recess-forming procedure was highly reproducible, with a deviation of +/ ⁇ 10 ⁇ m found (using an objective micrometer) for a batch of 30 recessed electrodes.
- the electrodes were examined under a microscope for flatness of the gold surface and correct depth.
- FIG. 1 shows a schematic side view in cross-section of an electrode of the present invention, showing the gold wire 2 , insulating coating 4 , and recess or channel 6 .
- the recessed gold surfaces were coated by filling of the cavities or channels 6 with aqueous solutions containing the crosslinkable components of the different layers, and their crosslinkers.
- the solutions were introduced under a microscope with a micropipette (connected to a microsyringe by polyethylene tubing and shrink tubing), using a micromanipulator. After application of each of the individual layers, the electrodes were cured overnight at room temperature, in air.
- the sensing layer 8 was made by “wiring” rGOX to the gold electrode through a redox hydrogel to which the enzyme was covalently bound.
- the electrodes were prepared as follows: 10 mg/ml solutions were made from
- a redox hydrogel was formed by mixing the three solutions so that the final composition (by weight) was 52% redox polymer, 35% enzyme and 13% crosslinker.
- the insulating layer 10 prevented electrical contact between the redox hydrogel and the interference eliminating enzymes (HRP and LOX).
- PAL:PAZ was used as the insulating material.
- the film was deposited from a solution obtained by mixing in volume ratio of 1/1, 1/2 or 1/3, a PAL solution (4.5 mg in 100 mM HEPES buffer at pH 7.0) and a freshly prepared PAZ solution (30 mg/ml). The PAZ solution was used within 15 minutes of preparation.
- the interference-eliminating layer 12 was prepared according to a previously published protocol, Maidan and Heller, 1992, Anal. Chem., 64:2889-2896. 50 ⁇ l of a 12 mg/ml freshly prepared sodium periodate solution was added to 100 ⁇ l of a solution containing 20 mg/ml HRP (HRP-VI or HRP-BM) and 100 mg/ml LOX (LOX or rLOX) in 0.1 M sodium bicarbonate and the mixture was incubated in the dark for two hours. Alternatively, the oxidation of HRP could be carried out prior to adding LOX and crosslinking.
- the biocompatible layer 14 films were photocrosslinked by exposure to UV light (UVP, Inc., San Gabriel, Calif.; Blak-Ray; spectral peak at 360 nM UV irradiance at the sample 200 mW/cm 2 ) for one minute.
- the initiator used was 2,2-dimethoxy-2-phenylacetophenone (Aldrich).
- a solution of 300 mg/ml of the initiator in 1-vinyl-2-pyrrolidinone (Aldrich) was added to the prepolymer mixtures.
- Approximately 30 ⁇ l of the initiator solution was added per ml of 10% w/w aqueous solution of the tetraacrylated PEO.
- the prepolymers were crosslinked in situ inside the recess of the electrode.
- the films were prepared by filling the recess with the prepolymer solution twice and exposing the electrode to the UV light source after each time the cavity was filled.
- the depth c of the channel 6 and the thickness of the polymer layers in it controls the mass transport, i.e., flux of glucose, to the sensing layer.
- the apparent Michaelis constant (K m ) is adjusted to about 20-30 mM glucose.
- the polyimide wall 4 of the channel 6 also protects the four polymer and polymer/enzyme layers 8 , 10 , 12 , 14 against mechanical damage and reduces the hazard of their loss in the body. Because the glucose electrooxidation current is limited by glucose mass transport through the recess 16 and its polymer films 8 , 10 , 12 , 14 , rather than by mass transport to the tissue-exposed tip 16 , the current is practically insensitive to motion. Evidently, the electrooxidation rate of glucose in the recessed sensing layer 8 is slower than the rate of glucose diffusion to the channel's outer fluid contacting interface.
- PVI 5 -Os is preferred as the “wire” of the sensing layer when an interference eliminating layer of HRP and LOX is used, but not in the absence of this layer, i.e., when redox polymers with more reducing redox potential are preferred.
- the subscript (5) is used to indicate that, on the average, every fifth vinylimidazole mer carries an electron-relaying osmium center.
- Use of electrodes formed with PVI 5 -Os and PVI 3 -Os are compared in FIG. 2 , and show higher current density of glucose electrooxidation on electrodes made with PVI 5 -Os (open triangle) than on those made with PVI 3 -Os (filled triangles).
- Depth of the recess and the sensing layer were investigated to assess the dependence of the current on the depth of the recess ( FIG. 3 ), with the total amount of PVI 5 -Os and rGOX being kept constant.
- Much of the loss in current in the deeper cavities resulted not from reduced glucose mass transport, but from adsorptive retention of part of the enzyme and polymer on the polyamide wall when microdrops of the component solutions were introduced into the recess in the process of making the electrodes.
- Some of the adsorbed polymer and enzyme on the walls were washed onto the electrode surface, increasing the current. The highest currents were seen after five washings.
- the ratio of current to charge required to electroreduce or electrooxidize the redox polymer in the sensing layer reached a maximum, then dropped.
- 10 coatings producing an approximately 13 ⁇ m thick wired-rGOX sensing layer, yielded sensors that had the desired characteristics for in vivo use.
- the insulating layer This layer electrically insulates the redox enzymes of the interference eliminating layer (HRP and LOX) from the “wired” rGOX layer and limits the glucose flux to the sensing layer, thereby extending the useful life of the electrode.
- PAL crosslinked with PAZ, forming a polycationic network at pH 7.09 is preferred. The best results, i.e., best stability of current outputs, were obtained using 1:2 PAL:PAZ ( FIG. 5 ), with three coatings applied to form an approximately 7 ⁇ m thick crosslinked film.
- the interference eliminating layer Interferants, particularly ascorbate, urate, and acetaminophenol, are oxidized in the third layer, containing LOX and HRP.
- lactate the typical concentration of which in blood is 1 mM, reacts with O 2 to form H 2 O 2 and pyruvate.
- H 2 O 2 in the presence of HRP, oxidizes ascorbate, urate, and acetaminophenol, being reduced to water.
- the preferred coimmobilization process involved two separate steps: periodate oxidation of oligosaccharide functions of HRP to aldehydes, followed by mixing with LOX and formation of multiple Schiff bases between HRP-aldehydes and LOX amines (e.g. lysines) and between HRP aldehydes and amines.
- the thickness of the interference eliminating layer is approximately 85 ⁇ m and is made by applying successive coatings, e.g., about six coatings.
- FIG. 6 shows that electrooxidizable interferants were eliminated in the presence of lactate at physiological levels.
- LOX slowly lost its activity in the crosslinked HRP-LOX layer. This led to degradation of the ability of the layer to eliminate interferants. After 36 hours of operation at 37° C., a measurable current increment was noted when enough ascorbate was added to produce a 0.1 mM concentration.
- a preferred biocompatible layer consists, for example, of photocrosslinked tetraacrylated 18,500 Da poly(ethylene oxide) (Pathak et al., 1993, J. Am. Chem. Soc., 114:8311-8312).
- the thickness of this layer, made by sequential photo-crosslinking of two coatings, is about 20 ⁇ m.
- One minute UV exposure required for the photocrosslinking process reduced the sensitivity by 16+/ ⁇ 2%.
- the rat's body temperature was maintained at 37° C. by a homeostatic blanket.
- the sensors were allowed to reach a basal signal level for at least one hour before blood sampling was started.
- Blood samples were obtained from the tail vein and all blood samples were analyzed using a glucose analyzer (YSI, Inc., Yellow Springs, Ohio; Model 23A).
- glucose infusion was started using a syringe pump (Harvard Apparatus, South Natick, Mass.) at a rate of 120 mg glucose/min kg rat wt. The glucose infusion was maintained for approximately one hour.
- thermostable recombinant GOX (rGOX; Heller, 1992, J. Phys. Chem., 96:3579-3587) rather than GOX is used in the sensor and glucose transport is reduced to make the sensor current diffusion, not enzyme turnover, limited.
- the glucose flux is attenuated by the three outer layers and the sensing layer itself. Because the sensing layer contains a large excess of glucose oxidase, its activity greatly exceeds that needed for electrooxidizing the attenuated glucose flux, and the sensor's stability is improved.
- the stability can be tested by methods known, for example, tested in the presence of 0.1 mM ascorbate in 10 mM glucose at 37° C.
- the current output of a typical optimized electrode was about 35 nA and the apparent K m , derived from an Eadie-Hofstee plot, was about 20 mM (Table 1).
- the 10-90% response time was approximately one minute.
- the sensitivity of the stabilized sensors does not change by more than +5% for 72 hours of operation at 37° C. After a small initial decrease in sensitivity, it increased to a maximum after 40 hours and the final 72 hour sensitivity was almost identical with the initial.
- the characteristics of the electrodes of the present invention are summarized in Table 1. Each entry represents an average value for five tested electrodes.
- Baseline currents are typically less than 0.5 nA and the noise less than 10 pA.
- the currents observed throughout the physiological glucose concentration range (2-20 mM) exceed the noise equivalent current by at least a factor of 100.
- the apparent K m is 20 mM, and the 10% to 90% response time is, for aged electrodes, about 90 seconds at the lowest physiologically relevant glucose concentration (2 mM) and 20 seconds at the highest (20 mM).
- the baseline of nil at 0 mM glucose is stable for 36 hours in the presence of 0.1 mM ascorbate.
- the stability observed and the existence of a valid zero-point in the presence of interferants suggest that the sensor can be used in vivo for 72 hours and tested/recalibrated in vivo through a single point calibration, i.e., by withdrawing only a single sample of blood for independent analysis.
- K M app is the apparent Michaelis-Menton coefficient determined from an electrochemical Eadie-Hoffstee (EH) or Lineweaver-Burk (LB) plot -t r is the 10-90% risetime, 90s for 2 mM and 30 s for 20 mH glucose concentration.
- EH electrochemical Eadie-Hoffstee
- LB Lineweaver-Burk
- -t r is the 10-90% risetime, 90s for 2 mM and 30 s for 20 mH glucose concentration.
- -Current Variance is the maximum deviation from the mean value, measured during the 72 hours test, conducted in 10 mM glucose in the presence of interferants. The current was continuously monitored at 37 ° C.
Abstract
A small diameter flexible electrode designed for subcutaneous in vivo amperometric monitoring of glucose is described. The electrode is designed to allow “one-point” in vivo calibration, i.e., to have zero output current at zero glucose concentration, even in the presence of other electroreactive species of serum or blood. The electrode is preferably three or four-layered, with the layers serially deposited within a recess upon the tip of a polyamide insulated gold wire. A first glucose concentration-to-current transducing layer is overcoated with an electrically insulating and glucose flux limiting layer (second layer) on which, optionally, an immobilized interference-eliminating horseradish peroxidase based film is deposited (third layer). An outer (fourth) layer is biocompatible.
Description
- This application is a Continuation of application Ser. No. 11/109,379, filed on Apr. 19, 2005, which is a Continuation application of Ser. No. 10/353,341, filed Jan. 28, 2003, now U.S. Pat. No. 6,881,551, which is a Continuation application of Ser. No. 09/997,808, filed Nov. 29, 2001, now U.S. Pat. No. 6,514,718, which is a Continuation application of Ser. No. 09/668,221, filed Sep. 22, 2000, now U.S. Pat. No. 6,329,161, which is a Continuation of application Ser. No. 09/477,053, filed Jan. 3, 2000, now U.S. Pat. No. 6,162,611, which is a Continuation of application Ser. No. 09/356,102, filed Jul. 16, 1999, now U.S. Pat. No. 6,121,009, which is a Continuation of application Ser. No. 08/767,110, filed Dec. 4, 1996, now U.S. Pat. No. 6,284,478, which is a continuation of application Ser. No. 08/299,526, filed Sep. 1, 1994, now U.S. Pat. No. 5,593,852, which is a continuation-in-part of application Ser. No. 08/161,682, filed Dec. 2, 1993, now U.S. Pat. No. 5,356,786, which is a continuation of application Ser. No. 07/664,054, filed Mar. 4, 1991, now abandoned, which applications are incorporated herein by reference.
- This work was supported in part by the National Institutes of Health (DK42015). Accordingly, the U.S. government may have rights in this invention.
- The present invention relates to in vivo enzyme biosensors and more specifically to miniature glucose sensors for subcutaneous measurement of glucose with one-point calibration.
- In response to the need for frequent or continuous in vivo monitoring of glucose in diabetics, particularly in brittle diabetes, a range of possible in vivo glucose electrodes have been studied. The desired characteristics of these electrodes include safety, clinical accuracy and reliability, feasibility of in vivo recalibration, stability for at least one hospital shift of eight hours, small size, ease of insertion and removal, and a sufficiently fast response to allow timely intervention. The in vivo recalibration should be based upon withdrawal of a single sample of body fluid, e.g., blood, and measuring its glucose concentration. This is termed “one point calibration”.
- Keys to safety are absence of leachable components, biocompatibility, and limiting of the potentially hazardous foreign matter introduced into the body to an amount that is inconsequential in a worst case failure. The clinical accuracy must be such that even when the readings are least accurate, the clinical decisions based on these be still correct. Feasibility of prompt confirmation of proper functioning of the sensors and of periodic in vivo recalibration is of essence if a physician is to allow the treatment of a patient to depend on the readings of the sensor. This one-point calibration, relying on the signal at zero glucose concentration being zero and measuring the blood glucose concentration at one point in time, along with the signal, is of essence, but has heretofore been elusive. The sensitivity must be sufficiently stable for the frequency of required in vivo recalibration to not be excessive. The sensor must be small enough to be introduced and removed with minimal discomfort to the patient and for minimal tissue damage. It is preferred that the sensor be subcutaneous and that it be inserted and removed by the patient or by staff in a physician's office. Finally, its response time must be fast enough so that corrective measures, when needed, can be timely.
- In response to some of these needs, needle type and other subcutaneous amperometric sensors were considered. The majority of these utilized platinum-iridium, or platinum black to electrooxidize H2O2 generated by the glucose oxidase (GOX) catalyzed reaction of glucose and oxygen. In these sensors, the GOX was usually in large excess and immobilized, often by crosslinking with albumin and glutaraldehyde. To exclude electrooxidizable interferants, membranes of cellulose acetate and sulfonated polymers including Nafion™ were used. Particular attention was paid to the exclusion of the most common electrooxidizable interferants: ascorbate, urate and acetaminophen. Also to cope with the interferants, two-electrode differential measurements were used, one electrode being sensitive to glucose and electrooxidizable interferants and the other only to interferants. One strategy for overcoming the problem of interferants, applicable also to the present invention, involves their preoxidation. Another strategy involves shifting, through chemical changes, the redox potential of the polymer in the sensing layer to more reducing potentials. When the redox potential of the polymer is in the region between about −0.15 V and +0.15 V versus the standard calomel electrode (SCE), and the electrodes are poised in their in vivo operation between about −0.10 and +0.25 V, the rate of electrooxidation of interferants such as ascorbate, urate, and acetaminophen is very slow relative to that of glucose through its physiological concentration range. Thus, also the currents from electrooxidation of interferants are small relative to those of glucose.
- To make the electrodes more biocompatible, hydrophilic polyurethanes, poly(vinyl alcohol) and polyHEMA membranes have been used.
- Several researchers tested GOX-based glucose sensors in vivo and obtained acceptable results in rats, rabbits, dogs, pigs, sheep and humans. These studies validated the subcutaneous tissue as an acceptable glucose sensing site. Good correlation was observed between intravascular and subcutaneous glucose concentrations. They also demonstrated the need for in vivo sensor calibration. Another approach to in vivo glucose monitoring was based on coupling subcutaneous microdialysis with electrochemical detection. To control and adjust the linear response range, electrodes have been made glucose-diffusion limited, usually through glucose transport limiting membranes.
- Diffusional mediators, through which the O2 partial pressure dependence of the signals is reduced, are leached from sensors. Such leaching introduces an unwanted chemical into the body, and also leads to loss in sensitivity, particularly in small sensors. In microsensors, in which outward diffusion of the mediator is radial, the decline in sensitivity is rapid. This problem has been overcome in “wired” enzyme electrodes, i.e., electrodes made by connecting enzymes to electrodes through crosslinked electron-conducting redox hydrogels (“wires”). Glucose oxidase has been “wired” with polyelectrolytes having electron relaying [Os(bpy)2Cl]+/2+ redox centers in their backbones. Hydrogels were formed upon crosslinking the enzyme and its wire on electrodes. These electrodes had high current densities and operated at a potential of 0.3V vs. SCE. The electrooxidizable interferants are eliminated through peroxidase-catalyzed preoxidation in a second, nonwired, hydrogen peroxide generating layer on the “wired” enzyme electrode.
- A small (e.g., 0.29 mm), recessed, non-corroding metal (e.g., gold, platinum, palladium) or carbon wire electrode for subcutaneous in vivo glucose monitoring, approaching in its performance all of the above listed requirements, including in vivo one-point calibration, has been produced. The electrode was constructed by depositing active polymer layers into a recess formed by etching away gold from an insulated gold wire.
- The active polymer layers, including a sensing layer, a glucose flux-limiting layer, a biocompatable layer, and optionally a peroxidase-based interferant eliminating layer, were protected within the recess against mechanical damage. (The peroxidase-based interferant eliminating layer is not required when a lower redox potential polymer is used, as described above.) The recess and its polymer layers also reduced the transport of glucose to the wire electrode contacting sensing layer.
- By limiting the glucose flux, the desired linear response range, spanning the clinically relevant glucose concentration range was obtained. The inventive biosensors are able to accurately measure, for example, approximately 2-30 mμ glucose and approximately 0.5-10 mμ lactate, in vivo. The sensor has no leachable components, and its four crosslinked polymer layers contain only about 5 μg of immobilized material, and only a few nanograms of polymer-bound osmium. Preoxidation of the interferants in one of the four layers makes possible one-point in vivo calibration of the sensor.
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FIG. 1 is a schematic drawing of an electrode of the present invention. -
FIG. 2 is a graphical representation of data generated comparing current density of glucose electrooxidation on electrodes made with PVI5-Os (open triangles) with those made with PVI3-Os (filled triangles). -
FIG. 3 is a graphical representation of data generated comparing dependency of current generated on the depth of the recess. -
FIG. 4 is a graphical representation of data generated comparing dependency of the ratio of the current generated and the charge required to electoreduce or oxidize the polymer redox centers in the sensing layer on the thickness of the sensing layer. -
FIG. 5 is a graphical representation of data generated comparing variation of current generated by electrodes having sensing layers of differing thickness and diffusion limiting layers of different compositions and thickness. Solid circles: 7.5 μm thick sensing layer of PVI5-Os (52%), rGOX (35%), PEGDGE (13%), coated with 4 μm PAL/PAZ (1:1 ratio). Open circles: 5.0 sensing layer. Solid triangles: 12.5 μm sensing layer and 7 μm PAL/PAZ (1:2 ratio). Open triangles: 7.5 μm sensing layer and 4.5 μm PAL/PAZ (1:2 ratio). -
FIG. 6 is a graphical representation of data generated comparing dependency of current generated on the presence of ascorbate, in the absence and presence of lactate and glucose. The concentrations of ascorbate (A), lactate (L) and glucose (G) are shown. Ascorbate is an electrooxidzable interferant. Upon addition of lactate its electrooxidation current is suppressed while that of glucose is not suppressed. -
FIG. 7 is a graphical representation of data showing current density and corresponding subcutaneous glucose concentration measured with the subcutaneously implanted electrodes of the present invention in a rat animal model. Large solid circles show blood glucose concentrations measured on withdrawn blood samples using a YSI analyzer. -
FIG. 8 is a Clarke-type clinical grid analyzing the clinical relevance of the blood glucose measurements ofFIG. 7 . -
FIG. 9 is a Clarke-type clinical grid of all possible correlations obtained when each of the 24 glucose analyses ofFIG. 7 were used for single point calibration of either implanted electrode. -
FIG. 10 is a Clarke-type clinical grid testing improvement of the single point calibration through redundant electrodes, the readings of which were within the standard deviation calculated for all differences between simultaneous readings by a pair of implanted electrodes. - The present invention includes an insulated, non-corroding conducting metal (e.g., gold, platinum, palladium) or carbon wire-based small (e.g., 290 μm) O.D. subcutaneous glucose sensor, allowing one-point calibration in vivo. As shown in
FIG. 1 , its construction involves coating a small (e.g., 250 μm) diameter non-corroding metal orcarbon wire 2 with an electrically insulatingmaterial 4, e.g., a polyimide, and, layering in arecess 6 formed by etching or removing a portion of the metal or carbon, the following active polymeric layers: an immobilized, “wired,”glucose oxidase layer 8; an electrically insulating and glucosediffusion limiting layer 10 formed, for example, by crosslinking a polyallylamine (PAL) with a polyaziridine (PAZ); optionally, aninterference eliminating layer 12, e.g., of crosslinked horseradish-peroxidase and lactate oxidase; and abiocompatible film 14 e.g., of poly(ethylene oxide) (PEO) derivatized to allow its photo-crosslinking. The outside diameter a of thewire 2 is preferably about 0.25 mm or less, and the outside diameter b of the insulated wire is preferably about 0.3 mm or less. Therecess 6 in the insulated electrode extends from thetip 16 of the electrode which is open to the surrounding environment, to the top 18 of thewire 2 in the insulating sheath, generally for a length c of less than about 0.150 mm, and preferably about 0.125 mm. - The electrodes have no leachable components. The total amount of polymers and enzymes is preferably about 5 μg. The glucose response through the physiologically relevant 2-20 mM concentration range is close to linear. The electrodes do not respond to ascorbate, urate or acetaminophenol for at least about 36 hours. Their 10-90% response time is about 90 seconds at 2 mM glucose and about 30 seconds at 20 mM glucose. Their sensitivity, after about 30 minutes equilibration, is stable for about 72 hours at 37° C. in 10 mM glucose, the current deviating from the average by less than .+−0.5%. The electrodes have substantially no signal output, e.g., current, charge, or potential, when the concentration of the analyte to be measured is zero.
- Two electrodes implanted subcutaneously in a rat tracked blood glucose levels, and their absolute, uncorrected current output was proportional to the blood glucose concentration. Analysis of the correlation between the blood glucose levels in the tail vein and the current output of the sensors in the subcutaneous regions of the thorax and between the scapulae of the same rat showed that even when the probed sites and organs differed in the extreme, one point in vivo calibration was valid. The analysis also showed the value of implanting redundant sensors. Had clinical decisions been made based on individual sensor readings, calibrated at one point, 94% would have been clinically correct. By using redundant sensors and accepting only those pairs of readings that were within one standard deviation, the percentage of the clinically correct decisions was increased to 99%.
- It is understood that one of skill in the art may substitute various components of the biosensor described above with known materials to obtain an modified biosensor using the principles outlined herein. For example, the following substitutions are contemplated:
- Base electrode: The base electrode of the inventive sensor may be formed of a non-corroding metal or carbon wire, for example vitreous carbon, graphite, platinum, palladium, or gold. Gold is preferred, and is used in the following illustrative examples of the invention.
- Insulator: The conductive metal or carbon wire is coated with an electrically insulating material, which also forms a wall about the recess which houses the active polymeric components. The insulating material may be, for example, polyurethane, teflon (fluorinated polymers), polyethyleneterephthalate (PET, Dacron) or polyimide. The insulating material is preferably a biocompatible polymer containing less than about 5% water when in equilibrium with physiological body fluids, e.g., subcutaneous tissue.
- Recess: In general, the recess at the tip of the electrode is approximately 20 to 150 μm in length c, and preferably is approximately 50 to 125 μm.
- Etching method: The method for etching metal from the tip of the electrode described herein may utilize chloride, bromide or iodide in the bath in lieu of cyamide as described. Bromide is preferred, because it is less toxic and, like Au(CN)2—, AuBr4 − is a water soluble anion. Thus, in aqueous HBR, the metal, e.g., gold, an be etched by applying a sufficiently oxidizing potential where gold is electrolytically dissolved:
Au+4HBr---->HAuBr4 +(3/2)H2 - Wired Enzyme Layer: In the sensing enzyme-containing layer, glucose oxidase may be substituted with other redox enzymes to measure other relevant clinical compounds. For example, lactate oxidase may be used for the in vivo detection of lactate, important in determining if an organ is receiving sufficient oxygen through the blood.
- Useful redox polymers and methods for producing the sensing layer are described, for example, in U.S. Pat. Nos. 5,264,104; 5,356,786; 5,262,035, and 5,320,725. Additional redox polymers include, for example, poly(1-vinyl imidazole); poly(4-vinyl pyridine); or copolymers of 1-vinyl imidazole such as poly (acrylamide co-1-vinyl imidazole) where the imidazole or pyridine complexes with [Os (bpy)2 Cl]+/2+; [Os (4,4′-dimethyl bipyridine)2Cl]+/2+; [Os (4,4′-dimethyl phenanthroline)2Cl-]+/2+; [Os (4,4′-dimethyoxy phenanthroline)2Cl]+/2+; and [Os (4,4′-dimethoxy bipyridine)2Cl]+/2+; to imidazole rings. The imidazole ring compounds are preferred because their complexes have more reducing redox potentials, i.e., closer to that of the SCE potential. At these more reducing potentials, the rate of electrooxidation of interferants and the current generated thereby.
- Barrier Layer: The polymeric barrier layer is electrically insulating and limits diffusion of glucose through to the sensing layer. It may be formed, for example, by crosslinking a polyallylamine (PAL) with a polyaziridine (PAZ). Alternatively, PAL may be replaced wholly or in part with a zwitterionic polymer obtained by quaternizing poly(vinylpyridine) with bromoacetate and dialyzing against 0.15M NaCl or by a polyanion such as a polysulfonic acid.
- The barrier layer may contain a polyanionic polymer, in which the rate of permeation of anionic interferants such as ascorbate and urate is slowed. This layer may also contain a polycation that enhances the retention of the polyanion by electrostatic bonds and improves wetting by the biocompatable layer.
- Interference Eliminating Layer: As described above, this layer is optional, in that it is not required when a redox polymer having a more reducing potential is used, such as PVI15-dmeOs (Ohara et al., Analytical Chemistry, 1994, 64:2451-2457). At operating potentials of approximately −0.10 to +0.25 for the glucose biosensor, the rate of electrooxidation of interferants such as ascorbate, urate and acetaminophen is very slow relative to that of glucose through its physiological concentration range.
- When a separate interferant eliminating layer is used, it preferably contains a peroxidase enzyme which may or may-not be preactivated. Such interferant eliminating layers are disclosed, for example, in U.S. Pat. No. 5,356,786, which discloses the structure and function of interferant eliminating biosensors. The glucose biosensor preferably contains lactate oxidase (LOX) in combination with peroxidase in the interferant eliminating layer. However, for biosensors used to detect lactate, glucose oxidase would be used with peroxidase. In a similar manner, the enzyme composition of the interferant eliminating layer may be altered for a specified function.
- Biocompatable Layer: In general, the biocompatable layer is comprised of hydrogels, e.g., polymeric compositions which contain more than about 20% by weight of water when in equilibrium with a physiological environment such as living tissue or blood. An example is crosslinked poly(ethylene oxide), e.g., poly(ethylene oxide) tetraacrylate. The polymeric compositions must be non-toxic and compatible with living Systems.
- Method for making multi-layered recessed biosensors: Insulated non-corroding metal or carbon wires that have been etched as described above to contain a recess at the tip, are placed in a block that serves as an X-Y positioner. The wires vertically traverse the block and are held in place, e.g., by pressure. The blocks with the wires can be formed of elements, each element having multiple half-cylinder grooves running vertically. The wires are placed in these grooves and the elements are assembled into the block using screws. For example, the block may be formed of aluminum having equally spaced holes, (900 for a 30×30 array of wires), each hole to contain one wire. The block is positioned under a fixed micronozzle that ejects a fluid in to the recess of the insulated wire.
- To reduce the requirement of precision in the positioning of the block and the micronozzle, the nozzle is electrically charged, with the wire having an opposite charge, or the wire being grounded or at least having a potential such that there is a potential difference between the nozzle and the wire. Because the nozzle is charged, the microdroplets it ejects are also charged with the same type of charge (positive or negative) as the nozzle. The higher the potential on the nozzle (e.g., versus ground potential), the higher the charge on the ejected microdroplets. If the tip of the wire to be coated is at ground potential or has a charge of the opposite type, the charged microdroplets are guided into the recess to deposit on the electrode, even if the jet of microdroplets is not vertical, i.e., even if the micronozzle is not precisely aligned above the wire's tip.
- Furthermore, the higher the electrical potential on the nozzle (relative to ground) the greater the charge on the ejected microdroplet. When the charge is high enough, the droplet breaks up into two or more smaller droplets because of electrostatic repulsion of charges on the droplet. Thus, the very small droplets all “drift” (drift meaning transport assisted by an electrical field) to the recessed electrode surface and are collected on it, even if they did not originate in a nozzle precisely aligned with the electrode.
- This coating method is useful in making any small biosensor, not only those in recessed zones.
- Clinical Use of the Recessed Biosensors:
- The recessed biosensors of the present invention have sufficient sensitivity and stability to be used as very small, subcutaneous biosensors for the measurement of clinically relevant compounds such as glucose and lactate. The electrodes accurately measure glucose in the range of about 2-30 μM and lactate in the range of about 0.5-10 mM. One function of the implanted biosensor is to sound an alarm when, for example, a patient's glucose concentration is too low or too high. When pairs of implanted electrodes are used, there are three situations in which an alarm is triggered: low glucose concentration, high glucose concentration; sensor malfunction as determined by a discrepancy between paired readings of the two sensors. A discrepancy sufficient to trigger the alarm may be, for example more than two or three times the standard deviation persisting for a defined period, e.g., not less than ten minutes. Such a system may be useful in sleeping patients, and also in emergency and intensive care hospital rooms, where vital functions are continuously monitored.
- Another function of the inventive biosensors in to assist diabetics in maintaining their blood glucose levels near normal. Many diabetics now maintain higher than normal blood glucose levels because of danger of coma and death in severe hypoglycemia. However, maintaining blood glucose levels substantially, e.g., approximately 40% or more above normal leads to retinopathy and blindness as well as to kidney failure. Use of the subcutaneous biosensors to frequently, if not continuously, monitor glucose concentrations is desirable so that glucose concentrations can be maintained closer to an optimum level.
- The subcutaneous biosensors can be used to measure the rate of rise and decline of glucose concentrations after a meal or the administration of glucose (e.g., a glucose tolerance test). The sensors are also useful in feedback loops for automatic or manually controlled maintenance of glucose concentrations within a defined range. For example, when used in conjunction with an insulin pump, a specified amount of insulin is delivered from the pump if the sensor glucose reading is above a set value.
- In all of these applications, the ability to promptly confirm that the implanted sensor reading is accurate is essential. Prompt confirmation and rapid recalibration are possible only when one-point calibration is valid. Generally, even if a sensor's response is linear through the relevant concentration range, calibration requires at least two blood or fluid samples, withdrawn from the patient at times when the glucose concentration differs. It usually takes several hours for the glucose concentration to change sufficiently to validate proper functioning by two-point calibration. The ability to confirm and recalibrate using only one point is thus a highly desirable feature of the present invention.
- Redundant sensors (e.g., at least two) are preferred in the clinical application of the subcutaneous biosensors. Such redundancy permits signaling of failure of any one sensor by recognition of an increase in the discrepancy between the readings of the sensors at one time point, e.g., more than two standard deviations apart. The redundant sensors may be implanted near each other or at remote sites.
- It is preferred that the biosensors be implanted in subcutaneous tissue so as to make the sensor relatively unobtrusive, and at a site where they would not be easily dislodged, e.g., with turning or movement. It is also preferred, when readings are not corrected for temperature (which they generally are) that the sensors be implanted where they are likely to be at body temperature, e.g., near 37° C., and preferably covered by clothing. Convenient sites include the abdomen, inner thigh, arm.
- Although we describe here continuous current measurement for assaying glucose, the electrical measurement by which the glucose concentration is monitored can be continuous or pulsed. It can be a current measurement, a potential measurement or a measurement of charge. It can be a steady state measurement, where a current or potential that does not substantially change during the measurement is monitored, or it can be a dynamic measurement, e.g., one in which the rate of current or potential change in a given time period is monitored. These measurements require at least one electrode in addition to the sensing electrode. This second electrode can be placed on the skin or can be implanted, e.g., subcutaneously. When a current is measured it is useful to have a potentiostat in the circuit connecting the implanted sensing electrode and the second electrode, that can be a reference electrode, such as an Ag/AgCl electrode. When a current is measured the reference electrode may serve also as the counter electrode. The counter electrode can also be a separate, third electrode, such as a platinum, carbon, palladium or gold electrode.
- In addition to implanting the sending electrode in the body, fluid from the body, particularly fluid from the subcutaneous region, can be routed to an external sensor. It is preferred in this case to implant in the subcutaneous region a microfiltration giver and pull fluid to an evacuated container, the fluid traversing a cell containing the sensing electrode. Preferably this cell also contains a second electrode, e.g., a reference electrode which may serve also as a counter electrode. Alternatively, the reference and counter electrodes may be separate electrodes. In coulometric measurements only two electrodes, the sensing electrode and the counter electrode are required. The flow of body fluid may be pulsed or continuous. Other than an implanted microfiltration fiber, also a microdialysis fiber may be used, preferably in conjunction with a pump.
- Increased Stability of the Biosensors:
- To increase the stability and useful life of the inventive biosensors, it is advantageous to use intrinsically more stable enzymes and redox polymers. However, even if the enzyme and redox polymer degrade in the glucose electrooxidation process by which the signal (current) is generated, it is possible to greatly extend the useful life of the implanted electrodes and reduce the frequency of their required recalibration after implantation.
- A simple measure by which the life of the implanted electrodes can be extended and the frequency of their required recalibration reduced involves turning the electrodes “on” by applying a bias, i.e., a potential, only during the period of measurement, then turning the biasing potential off or reducing it, so that a lesser current will flow. It is generally sufficient to perform only one measurement every five or even ten minutes, or longer, because glucose concentrations do not change abruptly.
- Another measure is to lower the glucose flux to the sensing layer much as possible, consistent with maintaining adequate sensitivity and detectivity. Reduction of the glucose flux to the sensing layer reduces the current. Therefore, even though this stabilizes the electrodes, i.e., slows the loss in sensitivity, the flux dependent current must not be excessively reduced. Usually a current of 3-5 nA at 2 mM glucose concentration is adequate. When the glucose flux is lowered by using one or more glucose-flux reducing polymer slayers, such as the PAL/PAZ layer, the lifetime of the sensor is increased.
- Electrode Preparation
- Electrodes were made of a polyamide-insulated 250 μm diameter gold wire, having an outer diameter (O.D.) of 290 μm (California Fine Wire Co., Grover City, Calif.). Heat shrinkable tubing (
RNF 100 3/64” BK and 1/16” BK, Thermofit®, Raychem, Menlo Park, Calif.) and a two component silver epoxy (Epo-tek H2OE; Epoxy Tech, Inc., Billerica, Mass.) were used for electrode preparation. - The glucose sensing layer was made by crosslinking a genetically engineered glucose oxidase (rGOX) (35% purity, Chiron Corp., Emeryville, Calif.) with a polymer derived of poly(vinylimidazole) (PVI), made by complexing part of the imidazoles to [Os(bpy)2Cl]+/2+. The resulting redox polymer, termed PVI-Os, was synthesized according to a previously published protocol. (Ohara et al., 1993, Anal. Chem., 65:24). Poly(ethylene glycol) diglycidyl ether 400 (PEDGE; Polysciences, Warrington, Pa.) was used as the crosslinker.
- The barrier layer between the sensing and interference-eliminating layers was made of polyallylamine (PAL; Polysciences) crosslinked with a polyfunctional aziridine (PAZ) (XAMA-7; Virginia Chemicals, Portsmouth, Va.).
- The interference-eliminating layer was prepared by co-immobilizing horseradish peroxidase (HRP) type VI (Cat. No. P-8375, 310 U/mg, denoted herein as HRP-VI, Sigma, St. Louis, Mo.) and HRP for immunological assay (No. 814407, min 1000 U/mg, denoted HRP-BM, Boehringer-Mannheim, Indianapolis, Ind.) with lactate oxidase from Pediococcus sp. (Cat. No. 1361, 40 U/mg denoted LOX, Genzyme, Cambridge, Mass.) and a recombinant microbial source (Cat. No. 1381 denoted rLOX, Genzyme). Co-immobilization was performed using sodium periodate (Cat. No. S-1147, Sigma) according to the methods described in Maidan and Heller, 1992, Anal. Chem. 64:2889-2896.
- The biocompatible layer was made of 10% aqueous poly(ethylene oxide) tetraacrylate (PEO-TA). To form the photocrosslinkable polymer, PEO was acrylated by reaction with acryloyl chloride. The 18,500 g/mol PEO (Polysciences) is a tetrahydroxylated compound by virtue of two hydroxyl groups on a bisphenol A bisepoxide that linked two .alpha., .omega.-hydroxy-terminated 9,000 g/mol PEO units. Acryloyl chloride (Aldrich, Milwaukee, Wis.) in a 2 to 5 molar excess was used to acrylate the polymer (10% w/v PEO in benzene). Triethylamine (Mallinkrodt, Paris, Ky.) was used as a proton acceptor equimolar with the acryloyl chloride.
- Other chemicals used were bovine serum albumin (BSA) fraction V (Cat. No. A-2153), BSA, ascorbic acid, uric acid, 4-acetaminophenol, L(+)=lactic acid, and
hydrogen peroxide 30%, all from Sigma. All chemicals were used as received. Solutions (if not otherwise specified) were made with distilled, deionized water. Glucose monitoring was performed in buffer, in bovine serum (Sigma, Cat. No. S-6648) containing antibiotic-antimycotic solution (Sigma, Cat. No. A-8909) at 37° C. and in rats. - Instrumentation
- In making the recessed gold electrodes, a potentiostat/galvanostat (PAR Model 173, Princeton Applied Research, Princeton, N.J.) operated in a galvanostatic mode, and a sonicator (Fisher scientific, Pittsburgh, Pa.) were used. Cyclic voltammograms were recorded with a potentiostat (PAR Model 273A) and a conventional electrochemical cell having a Pt wire counter and a SCE reference electrode and were evaluated with PAR 270 software. Glucose signals were monitored with a bipotentiostat (Biometra EP 30) and a two channel strip-chart recorder. The recessed electrodes were coated under a microscope (Bausch & Lomb) using a micromanipulator (Narishige, Seacliff, N.Y.). The micropipettes were pulled with a micropipette puller (Narishige). Temperature was controlled with an isothermal circulator (Fisher Scientific).
- Electrode Preparation:
- Five cm lengths of polyamide insulated gold wire were cut with a sharp razor blade. Electrical contact was made at one end with silver epoxy to an insulated stainless steel wire and the junction was covered with insulating heat shrinkable tubing. The recess forming electrochemical etching process was carried out in 10 ml of 3M potassium cyamide, with the gold wire as the working electrode and a platinum or gold wire as the counter electrode. The wires were placed in contact with the bottom of the beaker, all electrodes being equidistant from the counter electrode. The beaker was sonicated during the etching procedure. The ends of the gold wires were bent upwards, so that agitation by the sonicator caused the oxygen bubbles formed during the etching process to rise and escape. The electrodes were then thoroughly washed and immersed in water for 30 minutes.
- A
recess 6, i.e., channel, in a polyamide insulatedgold wire 2 is formed by electrochemical etching of the gold under galvanostatic control. By controlling the charge, the total amount of gold electrooxidized and dissolved as Au(CN)2 is defined. - When the conditions were set so that the CN—transport into the channel and the Au(CN)2-transport out of it are not rate limiting, (e.g., sonicated bath and high concentration of potassium cyamide, at least approximately 0.2M, and preferably 3M), a flat gold wire surface is produced at the bottom of channels with aspect ratios of 0.5 to 2.0. Thus, when the CN—concentration is high enough and the wires are ultrasonically vibrated, the tips of gold wires are flat. Passage of 1.5 coulombs per electrode at 8 mA current produced approximately 125 μm deep cavities or channels. At theoretical efficiency for one-electron oxidation, 3.08 mg of gold would have been etched. The amount of gold actually etched was only 0.076 mg, showing significant CN—or water oxidation.
- Nevertheless, the process is reproducible, accurate and fast with 20 electrodes being processed in each batch in less than five minutes. The recess-forming procedure was highly reproducible, with a deviation of +/−10 μm found (using an objective micrometer) for a batch of 30 recessed electrodes. Before coating, the electrodes were examined under a microscope for flatness of the gold surface and correct depth.
-
FIG. 1 shows a schematic side view in cross-section of an electrode of the present invention, showing thegold wire 2, insulatingcoating 4, and recess orchannel 6. The recessed gold surfaces were coated by filling of the cavities orchannels 6 with aqueous solutions containing the crosslinkable components of the different layers, and their crosslinkers. The solutions were introduced under a microscope with a micropipette (connected to a microsyringe by polyethylene tubing and shrink tubing), using a micromanipulator. After application of each of the individual layers, the electrodes were cured overnight at room temperature, in air. - Electrode Structure:
- The electrodes were prepared by sequentially depositing four layers within the recess or
channel 6. The layers were: thesensing layer 8, the insulatinglayer 10, the interference-eliminatinglayer 12 and thebiocompatible layer 14. The sensing layer, containing “wired” redox enzyme is positioned adjacent to and in contact with thegold wire 2. The insulatinglayer 10 is positioned between thesensing layer 8 and the peroxidase-based interferant-eliminatinglayer 12. Thebiocompatible layer 14 fills the remaining space in therecess 6 and is in contact with the environment outside the electrode. The thin polymer layers are well protected by containment within thepolyamide sleeve 4. - The
sensing layer 8 was made by “wiring” rGOX to the gold electrode through a redox hydrogel to which the enzyme was covalently bound. The electrodes were prepared as follows: 10 mg/ml solutions were made from - 1. the PVI-Os redox polymer in water,
- 2. the crosslinker, PEGDGE, in water, and
- 3. the enzyme, rGOX, in a 10 mM HEPES solution adjusted to pH 8.15.
- A redox hydrogel was formed by mixing the three solutions so that the final composition (by weight) was 52% redox polymer, 35% enzyme and 13% crosslinker.
- The insulating
layer 10 prevented electrical contact between the redox hydrogel and the interference eliminating enzymes (HRP and LOX). PAL:PAZ was used as the insulating material. The film was deposited from a solution obtained by mixing in volume ratio of 1/1, 1/2 or 1/3, a PAL solution (4.5 mg in 100 mM HEPES buffer at pH 7.0) and a freshly prepared PAZ solution (30 mg/ml). The PAZ solution was used within 15 minutes of preparation. - The interference-eliminating
layer 12 was prepared according to a previously published protocol, Maidan and Heller, 1992, Anal. Chem., 64:2889-2896. 50 μl of a 12 mg/ml freshly prepared sodium periodate solution was added to 100 μl of a solution containing 20 mg/ml HRP (HRP-VI or HRP-BM) and 100 mg/ml LOX (LOX or rLOX) in 0.1 M sodium bicarbonate and the mixture was incubated in the dark for two hours. Alternatively, the oxidation of HRP could be carried out prior to adding LOX and crosslinking. - The
biocompatible layer 14 films were photocrosslinked by exposure to UV light (UVP, Inc., San Gabriel, Calif.; Blak-Ray; spectral peak at 360 nM UV irradiance at thesample 200 mW/cm2) for one minute. The initiator used was 2,2-dimethoxy-2-phenylacetophenone (Aldrich). A solution of 300 mg/ml of the initiator in 1-vinyl-2-pyrrolidinone (Aldrich) was added to the prepolymer mixtures. Approximately 30 μl of the initiator solution was added per ml of 10% w/w aqueous solution of the tetraacrylated PEO. The prepolymers were crosslinked in situ inside the recess of the electrode. The films were prepared by filling the recess with the prepolymer solution twice and exposing the electrode to the UV light source after each time the cavity was filled. - In Vitro Testing of Electrodes:
- In vitro experiments were carried out in batch fashion at 250 and 37° C., using a conventional three electrode electrochemical cell with the enzyme-modified gold wire as the working electrode, a platinum wire as the counter electrode and a saturated calomel reference electrode (SCE). The electrolyte was a 20 mM phosphate buffered-saline solution containing 0.15 M NaCl at pH 7.15. Experiments in serum were performed at 37° C., adding 100 μL antibiotic-antimycotic solution to 10 ml serum. Phosphate buffered-saline and serum were agitated during the experiments. The working potential was +0.3 V versus SCE for experiments with the PVI-Os polymers.
- Structure and Performance: The depth c of the
channel 6 and the thickness of the polymer layers in it controls the mass transport, i.e., flux of glucose, to the sensing layer. By controlling these parameters, the apparent Michaelis constant (Km) is adjusted to about 20-30 mM glucose. Thepolyimide wall 4 of thechannel 6 also protects the four polymer and polymer/enzyme layers 8, 10, 12, 14 against mechanical damage and reduces the hazard of their loss in the body. Because the glucose electrooxidation current is limited by glucose mass transport through therecess 16 and itspolymer films tip 16, the current is practically insensitive to motion. Evidently, the electrooxidation rate of glucose in the recessedsensing layer 8 is slower than the rate of glucose diffusion to the channel's outer fluid contacting interface. - PVI5-Os is preferred as the “wire” of the sensing layer when an interference eliminating layer of HRP and LOX is used, but not in the absence of this layer, i.e., when redox polymers with more reducing redox potential are preferred. The subscript (5) is used to indicate that, on the average, every fifth vinylimidazole mer carries an electron-relaying osmium center. Use of electrodes formed with PVI5-Os and PVI3-Os (every third 1-vinylimidazole mer carrying an osmium center) are compared in
FIG. 2 , and show higher current density of glucose electrooxidation on electrodes made with PVI5-Os (open triangle) than on those made with PVI3-Os (filled triangles). - Depth of the recess and the sensing layer: Channels of 125, 250, and 500 μm depth, were investigated to assess the dependence of the current on the depth of the recess (
FIG. 3 ), with the total amount of PVI5-Os and rGOX being kept constant. Much of the loss in current in the deeper cavities resulted not from reduced glucose mass transport, but from adsorptive retention of part of the enzyme and polymer on the polyamide wall when microdrops of the component solutions were introduced into the recess in the process of making the electrodes. Through repeated rinsing with water, some of the adsorbed polymer and enzyme on the walls were washed onto the electrode surface, increasing the current. The highest currents were seen after five washings. When the thickness of the sensing layer was increased through increasing the number of coatings (FIG. 4 ) the ratio of current to charge required to electroreduce or electrooxidize the redox polymer in the sensing layer reached a maximum, then dropped. For the preferred 125 μm recess, 10 coatings, producing an approximately 13 μm thick wired-rGOX sensing layer, yielded sensors that had the desired characteristics for in vivo use. - The insulating layer: This layer electrically insulates the redox enzymes of the interference eliminating layer (HRP and LOX) from the “wired” rGOX layer and limits the glucose flux to the sensing layer, thereby extending the useful life of the electrode. PAL crosslinked with PAZ, forming a polycationic network at pH 7.09 is preferred. The best results, i.e., best stability of current outputs, were obtained using 1:2 PAL:PAZ (
FIG. 5 ), with three coatings applied to form an approximately 7 μm thick crosslinked film. - The interference eliminating layer: Interferants, particularly ascorbate, urate, and acetaminophenol, are oxidized in the third layer, containing LOX and HRP. In this layer, lactate, the typical concentration of which in blood is 1 mM, reacts with O2 to form H2O2 and pyruvate. H2O2, in the presence of HRP, oxidizes ascorbate, urate, and acetaminophenol, being reduced to water. The preferred coimmobilization process involved two separate steps: periodate oxidation of oligosaccharide functions of HRP to aldehydes, followed by mixing with LOX and formation of multiple Schiff bases between HRP-aldehydes and LOX amines (e.g. lysines) and between HRP aldehydes and amines. The thickness of the interference eliminating layer is approximately 85 μm and is made by applying successive coatings, e.g., about six coatings.
FIG. 6 shows that electrooxidizable interferants were eliminated in the presence of lactate at physiological levels. LOX slowly lost its activity in the crosslinked HRP-LOX layer. This led to degradation of the ability of the layer to eliminate interferants. After 36 hours of operation at 37° C., a measurable current increment was noted when enough ascorbate was added to produce a 0.1 mM concentration. - The biocompatible layer: A preferred biocompatible layer consists, for example, of photocrosslinked tetraacrylated 18,500 Da poly(ethylene oxide) (Pathak et al., 1993, J. Am. Chem. Soc., 114:8311-8312). The thickness of this layer, made by sequential photo-crosslinking of two coatings, is about 20 μm. One minute UV exposure required for the photocrosslinking process reduced the sensitivity by 16+/−2%.
- In Vivo Use of Sensor
- The objective of this experiment was to establish the validity of a one-point in vivo calibration. Two sensors were simultaneously implanted subcutaneously in a rat, one on the thorax, the second between the scapulae. To make the difference between the blood sampled and the subcutaneous fluid proved with the sensors as extreme as possible, i.e., to probe whether the one-point calibration holds even if the organs sampled are different and the sampling sites are remote, blood was withdrawn from the tail vein. Blood glucose levels were periodically measured in withdrawn samples, while the absolute uncorrected sensor current output was continuously monitored.
- In vivo experiments (6-10 hours) were carried out in 300 g male Sprague-Dawley rats. The rats were fasted overnight and prior to the experiment were anaesthetized with an intraperitoneal (i.p.) injection of sodium pentobarbital (65 mg/kg rat wt). An i.p. injection of atropine sulfate (166 mg/kg rat wt) was then administered to suppress respiratory depression. Once the rat was anaesthetized, a portion of the rat's abdomen was shaved, coated with a conductive gel, and an Ag/AgCl surface skin reference electrode was attached. This electrode served also as the counter electrode. Sensors were then implanted subcutaneously using a 22 gauge Per-Q-Cath Introducer (Gesco International, San Antonio, Tex.) on the rat's thorax, or subcutaneously in the intrascepular area through a small surgical incision. The sensors were taped to the skin to avoid sensor movement. The sensors, along with the reference electrode, were connected to an in-house built bipotentiostat. The operating potential of the sensors was 0.3 V vs. Ag/AgCl, with the Ag/AgCl electrode serving as both the reference counter electrode. Sensor readings were collected using a data logger (Rustrak Ranger, East Greenwich, R.I.) and at the end of the experiment were transferred to a computer. During the experiment, the rat's body temperature was maintained at 37° C. by a homeostatic blanket. The sensors were allowed to reach a basal signal level for at least one hour before blood sampling was started. Blood samples were obtained from the tail vein and all blood samples were analyzed using a glucose analyzer (YSI, Inc., Yellow Springs, Ohio; Model 23A).
- Approximately thirty minutes after the start of blood sampling, an i.p. glucose infusion was started using a syringe pump (Harvard Apparatus, South Natick, Mass.) at a rate of 120 mg glucose/min kg rat wt. The glucose infusion was maintained for approximately one hour.
- As seen in
FIG. 7 , at 410 min the current dropped precipitously. Such a drop was observed in other measurements with subcutaneously implanted electrodes between 400 and 600 min, but was never observed in electrodes operated in buffer at 37° C. When the failed electrodes were withdrawn and retested in buffer, most of their original sensitivity was found to be intact. The cause for this apparent deactivation was failure of the counter/reference Ag/AgCl electrode on the rat's skin to make good electrolytic contact, and was not due to any failure of the implanted sensor. Using an arbitrarily chosen point to calculate a calibration curve for each electrode, i.e., one blood glucose level determination and one current measurement to establish the scales, all the data fromFIG. 7 were plotted in a Clarke-type, (Clarke et al., 1987, Diabetes Care, 5:622-627) clinical grid (FIG. 8 ), without further correction. In this analysis, points falling in region A of the grid are considered clinically accurate, while those in region B are considered clinically correct. Points falling in region C are not correct, but would not lead to improper treatment. Points in regions D and E are incorrect and if treatment would rely on these, it would be improper. - All of the points, from both electrodes, were in regions A and B, with 43 of the 48 points being in region A. The three points in region B near 100 mg/dl glucose, for the electrode implanted between the scapulae, were the last three points of the experiment, at about 410 min. Notwithstanding the failure mode at 400-600 min because of poor electrolytic contact of the counter/reference electrode with the skin and failure after 36 hours by deactivation of the lactate oxidase, resulting in loss of interference elimination, one-point calibration is shown here to be practical. After such calibration, the readings of the subcutaneous sensors provide, without any correction, clinically useful estimates of blood glucose levels.
-
FIG. 9 shows the distribution of all possible. correlations obtained when each of the 24 glucose analyses was used for single point calibration of either implanted electrode. There are 2×24×24=1152 points in the distribution. Of these, 78% are in region A, 15% are in region B, 1% in region C, 6% are in region D, and no points are in region E. - In
FIG. 10 , we tested for the improvement of the single point calibration through using redundant electrodes. First, the readings of electrode A were normalized with respect to those of electrode B by multiplying each reading by the average output of electrode B divided by the average output of electrode A. Next the standard deviation was calculated for the differences between the 24 sets of readings of implanted electrode B and corrected readings of implanted electrode A. Then, all those sets of readings that differed by more than the standard deviation were rejected. The number of sets was reduced thereby from 24 to 11; 82% of the points were in region A, 17% in region B, 1% in region D, and no points in regions C and E. The distribution demonstrates that the sensors can be calibrated through a single independent measurement of the glucose concentration in a withdrawn blood sample. They also demonstrate the improvement in clinical accuracy resulting from the use of redundant subcutaneous sensors. The selection of those data points that differed by less than the standard deviation for the entire set led to a sixfold reduction in the probability of clinically erring in a decision based on readings of the implanted sensors. - Stability and Other Characteristics:
- In order to improve the stability, more thermostable recombinant GOX, (rGOX; Heller, 1992, J. Phys. Chem., 96:3579-3587) rather than GOX is used in the sensor and glucose transport is reduced to make the sensor current diffusion, not enzyme turnover, limited. The glucose flux is attenuated by the three outer layers and the sensing layer itself. Because the sensing layer contains a large excess of glucose oxidase, its activity greatly exceeds that needed for electrooxidizing the attenuated glucose flux, and the sensor's stability is improved.
- The stability can be tested by methods known, for example, tested in the presence of 0.1 mM ascorbate in 10 mM glucose at 37° C. The current output of a typical optimized electrode was about 35 nA and the apparent Km, derived from an Eadie-Hofstee plot, was about 20 mM (Table 1). The 10-90% response time was approximately one minute.
- As expected, and as can be seen in
FIG. 5 , with thinner films the glucose mass transport was increased, i.e., the current was higher, while for thicker films the stability was improved. Because of the high sensitivity of thin sensing film (approximately 1 μm) electrodes (less than 10−2A cm−2 M−1), an order of magnitude decrease in sensitivity could be traded for stability, while the currents remained high enough to be easily measured. - As seen in
FIG. 5 , the sensitivity of the stabilized sensors does not change by more than +5% for 72 hours of operation at 37° C. After a small initial decrease in sensitivity, it increased to a maximum after 40 hours and the final 72 hour sensitivity was almost identical with the initial. - The characteristics of the electrodes of the present invention are summarized in Table 1. Each entry represents an average value for five tested electrodes. Baseline currents are typically less than 0.5 nA and the noise less than 10 pA. The currents observed throughout the physiological glucose concentration range (2-20 mM) exceed the noise equivalent current by at least a factor of 100. The apparent Km is 20 mM, and the 10% to 90% response time is, for aged electrodes, about 90 seconds at the lowest physiologically relevant glucose concentration (2 mM) and 20 seconds at the highest (20 mM).
- The baseline of nil at 0 mM glucose is stable for 36 hours in the presence of 0.1 mM ascorbate. The stability observed and the existence of a valid zero-point in the presence of interferants suggest that the sensor can be used in vivo for 72 hours and tested/recalibrated in vivo through a single point calibration, i.e., by withdrawing only a single sample of blood for independent analysis.
TABLE 1 SENSOR CHARACTERISTICS Km app(mM) Km app(mM) Current i(nA) j(μA/cm2) EH LB tr(s) Variance (%) 33.9 69.1 18.5 33.4 30-90 5.0
where:
-I is the current measured at 37 ° C. and 10 mM glucose concentration
-j is the current density measured at 37 ° C. at 10 mM glucose concentration
KM app is the apparent Michaelis-Menton coefficient determined from an electrochemical Eadie-Hoffstee (EH) or Lineweaver-Burk (LB) plot
-tr is the 10-90% risetime, 90s for 2 mM and 30 s for 20 mH glucose concentration.
-Current Variance is the maximum deviation from the mean value, measured during the 72 hours test, conducted in 10 mM glucose in the presence of interferants. The current was continuously monitored at 37 ° C. - The foregoing examples are designed to illustrate certain aspects of the present invention. The examples are not intended to be comprehensive of all features and all embodiments of the present invention, and should not be construed as limiting the claims presented herein.
Claims (22)
1. A glucose monitoring device having a stacked construction comprising a first electrode, a second electrode, a glucose-responsive enzyme, and a substrate, wherein the first and second electrodes, and the substrate are positioned in a stacked construction, and further, wherein at least a portion of the device is configured for positioning below a skin surface.
2. The device of claim 1 further wherein the enzyme is a wired enzyme.
3. The device of claim 2 wherein the enzyme is adjacent at least one of the first and second electrodes.
4. The device of claim 1 comprising a membrane.
5. The device of claim 4 wherein the membrane is formed in situ.
6. The device of claim 5 , wherein the membrane is a mass transport limiting membrane.
7. The device of claim 1 wherein the device includes a part that is connectable to a device to receive glucose data from the glucose monitoring device when connected.
8. The device of claim 1 wherein the first and the second electrodes include a working electrode, and a reference electrode or a reference/counter electrode, respectively.
9. The device of claim 1 including a third electrode.
10. The device of claim 9 wherein the first electrode, the second electrode and the third electrode include a working electrode, a reference electrode, and a counter electrode.
11. The device of claim 9 wherein the device includes two working electrodes.
12. A transcutaneous sensor, comprising:
a first layer;
a first conducting layer at least a portion of which is positioned in contact with at least a first portion of the first layer;
a second layer having a first surface and a second surface, at least a portion of the first surface positioned in contact with at least a first portion of the first conducting layer; and
a second conducting layer at least a portion of which is positioned in contact with at least a portion of the second surface of the second layer.
13. The sensor of claim 12 wherein the first and the second layers include nonconducting material.
14. The sensor of claim 12 wherein at least one of the conducting layers includes a working electrode.
15. The sensor of claim 12 wherein the second layer is substantially disposed between the first conducting layer and the second conducting layer.
16. The sensor of claim 12 comprising an analyte responsive enzyme.
17. The sensor of claim 16 , wherein the enzyme is a wired enzyme.
18. The sensor of claim 12 , comprising a redox compound.
19. The sensor of claim 18 , wherein the redox compound includes a redox polymer.
20. The sensor of claim 18 , comprising a mass transport limiting layer.
21. The sensor of claim 12 , wherein at least another portion of the first conducting layer is in fluid contact with an analyte of a patient.
22. The sensor of claim 12 , wherein the device comprises a portion connectable to a device for measurement of the signal generated by the sensor.
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US08/161,682 US5356786A (en) | 1991-03-04 | 1993-12-02 | Interferant eliminating biosensor |
US08/299,526 US5593852A (en) | 1993-12-02 | 1994-09-01 | Subcutaneous glucose electrode |
US08/767,110 US6284478B1 (en) | 1993-12-02 | 1996-12-04 | Subcutaneous glucose electrode |
US09/356,102 US6121009A (en) | 1993-12-02 | 1999-07-16 | Electrochemical analyte measurement system |
US09/477,053 US6162611A (en) | 1993-12-02 | 2000-01-03 | Subcutaneous glucose electrode |
US09/668,221 US6329161B1 (en) | 1993-12-02 | 2000-09-22 | Subcutaneous glucose electrode |
US09/997,808 US6514718B2 (en) | 1991-03-04 | 2001-11-29 | Subcutaneous glucose electrode |
US10/353,341 US6881551B2 (en) | 1991-03-04 | 2003-01-28 | Subcutaneous glucose electrode |
US11/109,379 US20050287620A1 (en) | 1991-03-04 | 2005-04-19 | Method of determining analyte level using subcutaneous electrode |
US11/695,611 US20070218097A1 (en) | 1991-03-04 | 2007-04-03 | Subcutaneous Glucose Electrode |
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US08/767,110 Expired - Lifetime US6284478B1 (en) | 1991-03-04 | 1996-12-04 | Subcutaneous glucose electrode |
US09/229,235 Expired - Lifetime US5965380A (en) | 1993-12-02 | 1999-01-12 | Subcutaneous glucose electrode |
US09/334,480 Expired - Lifetime US6083710A (en) | 1993-12-02 | 1999-06-16 | Electrochemical analyte measurement system |
US09/356,102 Expired - Lifetime US6121009A (en) | 1991-03-04 | 1999-07-16 | Electrochemical analyte measurement system |
US09/477,053 Expired - Lifetime US6162611A (en) | 1991-03-04 | 2000-01-03 | Subcutaneous glucose electrode |
US09/668,221 Expired - Lifetime US6329161B1 (en) | 1991-03-04 | 2000-09-22 | Subcutaneous glucose electrode |
US09/997,808 Expired - Fee Related US6514718B2 (en) | 1991-03-04 | 2001-11-29 | Subcutaneous glucose electrode |
US10/353,341 Expired - Fee Related US6881551B2 (en) | 1991-03-04 | 2003-01-28 | Subcutaneous glucose electrode |
US11/109,379 Abandoned US20050287620A1 (en) | 1991-03-04 | 2005-04-19 | Method of determining analyte level using subcutaneous electrode |
US11/182,634 Expired - Fee Related US7462264B2 (en) | 1991-03-04 | 2005-07-15 | Subcutaneous glucose electrode |
US11/681,713 Expired - Fee Related US8588881B2 (en) | 1991-03-04 | 2007-03-02 | Subcutaneous glucose electrode |
US11/695,611 Abandoned US20070218097A1 (en) | 1991-03-04 | 2007-04-03 | Subcutaneous Glucose Electrode |
US11/695,612 Expired - Fee Related US8741590B2 (en) | 1991-03-04 | 2007-04-03 | Subcutaneous glucose electrode |
US12/551,480 Abandoned US20100059370A1 (en) | 1991-03-04 | 2009-08-31 | Subcutaneous Glucose Electrode |
US12/551,265 Abandoned US20100030046A1 (en) | 1991-03-04 | 2009-08-31 | Subcutaneous Glucose Electrode |
US12/551,504 Abandoned US20100059373A1 (en) | 1991-03-04 | 2009-08-31 | Subcutaneous Glucose Electrode |
US12/551,497 Abandoned US20100059372A1 (en) | 1991-03-04 | 2009-08-31 | Subcutaneous Glucose Electrode |
US12/551,222 Abandoned US20100121166A1 (en) | 1991-03-04 | 2009-08-31 | Subcutaneous Glucose Electrode |
US12/551,411 Abandoned US20100030047A1 (en) | 1991-03-04 | 2009-08-31 | Subcutaneous Glucose Electrode |
US12/551,192 Abandoned US20100121165A1 (en) | 1991-03-04 | 2009-08-31 | Subcutaneous Glucose Electrode |
US12/551,283 Abandoned US20100030044A1 (en) | 1991-03-04 | 2009-08-31 | Subcutaneous Glucose Electrode |
US12/551,513 Abandoned US20100072064A1 (en) | 1991-03-04 | 2009-08-31 | Subcutaneous Glucose Electrode |
US12/551,419 Abandoned US20100030048A1 (en) | 1991-03-04 | 2009-08-31 | Subcutaneous Glucose Electrode |
US12/551,439 Abandoned US20100030050A1 (en) | 1991-03-04 | 2009-08-31 | Subcutaneous Glucose Electrode |
US12/551,427 Abandoned US20100030049A1 (en) | 1991-03-04 | 2009-08-31 | Subcutaneous Glucose Electrode |
US12/551,510 Abandoned US20100072063A1 (en) | 1991-03-04 | 2009-08-31 | Subcutaneous Glucose Electrode |
US12/551,491 Abandoned US20100059371A1 (en) | 1991-03-04 | 2009-08-31 | Subcutaneous Glucose Electrode |
US12/551,448 Abandoned US20100030051A1 (en) | 1991-03-04 | 2009-08-31 | Subcutaneous Glucose Electrode |
US12/615,009 Abandoned US20100051479A1 (en) | 1991-03-04 | 2009-11-09 | Subcutaneous Glucose Electrode |
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US08/299,526 Expired - Lifetime US5593852A (en) | 1991-03-04 | 1994-09-01 | Subcutaneous glucose electrode |
US08/767,110 Expired - Lifetime US6284478B1 (en) | 1991-03-04 | 1996-12-04 | Subcutaneous glucose electrode |
US09/229,235 Expired - Lifetime US5965380A (en) | 1993-12-02 | 1999-01-12 | Subcutaneous glucose electrode |
US09/334,480 Expired - Lifetime US6083710A (en) | 1993-12-02 | 1999-06-16 | Electrochemical analyte measurement system |
US09/356,102 Expired - Lifetime US6121009A (en) | 1991-03-04 | 1999-07-16 | Electrochemical analyte measurement system |
US09/477,053 Expired - Lifetime US6162611A (en) | 1991-03-04 | 2000-01-03 | Subcutaneous glucose electrode |
US09/668,221 Expired - Lifetime US6329161B1 (en) | 1991-03-04 | 2000-09-22 | Subcutaneous glucose electrode |
US09/997,808 Expired - Fee Related US6514718B2 (en) | 1991-03-04 | 2001-11-29 | Subcutaneous glucose electrode |
US10/353,341 Expired - Fee Related US6881551B2 (en) | 1991-03-04 | 2003-01-28 | Subcutaneous glucose electrode |
US11/109,379 Abandoned US20050287620A1 (en) | 1991-03-04 | 2005-04-19 | Method of determining analyte level using subcutaneous electrode |
US11/182,634 Expired - Fee Related US7462264B2 (en) | 1991-03-04 | 2005-07-15 | Subcutaneous glucose electrode |
US11/681,713 Expired - Fee Related US8588881B2 (en) | 1991-03-04 | 2007-03-02 | Subcutaneous glucose electrode |
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Application Number | Title | Priority Date | Filing Date |
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US11/695,612 Expired - Fee Related US8741590B2 (en) | 1991-03-04 | 2007-04-03 | Subcutaneous glucose electrode |
US12/551,480 Abandoned US20100059370A1 (en) | 1991-03-04 | 2009-08-31 | Subcutaneous Glucose Electrode |
US12/551,265 Abandoned US20100030046A1 (en) | 1991-03-04 | 2009-08-31 | Subcutaneous Glucose Electrode |
US12/551,504 Abandoned US20100059373A1 (en) | 1991-03-04 | 2009-08-31 | Subcutaneous Glucose Electrode |
US12/551,497 Abandoned US20100059372A1 (en) | 1991-03-04 | 2009-08-31 | Subcutaneous Glucose Electrode |
US12/551,222 Abandoned US20100121166A1 (en) | 1991-03-04 | 2009-08-31 | Subcutaneous Glucose Electrode |
US12/551,411 Abandoned US20100030047A1 (en) | 1991-03-04 | 2009-08-31 | Subcutaneous Glucose Electrode |
US12/551,192 Abandoned US20100121165A1 (en) | 1991-03-04 | 2009-08-31 | Subcutaneous Glucose Electrode |
US12/551,283 Abandoned US20100030044A1 (en) | 1991-03-04 | 2009-08-31 | Subcutaneous Glucose Electrode |
US12/551,513 Abandoned US20100072064A1 (en) | 1991-03-04 | 2009-08-31 | Subcutaneous Glucose Electrode |
US12/551,419 Abandoned US20100030048A1 (en) | 1991-03-04 | 2009-08-31 | Subcutaneous Glucose Electrode |
US12/551,439 Abandoned US20100030050A1 (en) | 1991-03-04 | 2009-08-31 | Subcutaneous Glucose Electrode |
US12/551,427 Abandoned US20100030049A1 (en) | 1991-03-04 | 2009-08-31 | Subcutaneous Glucose Electrode |
US12/551,510 Abandoned US20100072063A1 (en) | 1991-03-04 | 2009-08-31 | Subcutaneous Glucose Electrode |
US12/551,491 Abandoned US20100059371A1 (en) | 1991-03-04 | 2009-08-31 | Subcutaneous Glucose Electrode |
US12/551,448 Abandoned US20100030051A1 (en) | 1991-03-04 | 2009-08-31 | Subcutaneous Glucose Electrode |
US12/615,009 Abandoned US20100051479A1 (en) | 1991-03-04 | 2009-11-09 | Subcutaneous Glucose Electrode |
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---|---|---|---|---|
US20080086042A1 (en) * | 2006-10-04 | 2008-04-10 | Dexcom, Inc. | Analyte sensor |
US7761130B2 (en) | 2003-07-25 | 2010-07-20 | Dexcom, Inc. | Dual electrode system for a continuous analyte sensor |
US7766829B2 (en) | 2005-11-04 | 2010-08-03 | Abbott Diabetes Care Inc. | Method and system for providing basal profile modification in analyte monitoring and management systems |
US7783333B2 (en) | 2004-07-13 | 2010-08-24 | Dexcom, Inc. | Transcutaneous medical device with variable stiffness |
US7792562B2 (en) | 1997-03-04 | 2010-09-07 | Dexcom, Inc. | Device and method for determining analyte levels |
US7811231B2 (en) | 2002-12-31 | 2010-10-12 | Abbott Diabetes Care Inc. | Continuous glucose monitoring system and methods of use |
US7828728B2 (en) | 2003-07-25 | 2010-11-09 | Dexcom, Inc. | Analyte sensor |
US7860544B2 (en) | 1998-04-30 | 2010-12-28 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US7857760B2 (en) | 2004-07-13 | 2010-12-28 | Dexcom, Inc. | Analyte sensor |
US7885697B2 (en) | 2004-07-13 | 2011-02-08 | Dexcom, Inc. | Transcutaneous analyte sensor |
US7920907B2 (en) | 2006-06-07 | 2011-04-05 | Abbott Diabetes Care Inc. | Analyte monitoring system and method |
US7928850B2 (en) | 2007-05-08 | 2011-04-19 | Abbott Diabetes Care Inc. | Analyte monitoring system and methods |
US7976778B2 (en) | 2001-04-02 | 2011-07-12 | Abbott Diabetes Care Inc. | Blood glucose tracking apparatus |
US7996054B2 (en) | 1998-03-04 | 2011-08-09 | Abbott Diabetes Care Inc. | Electrochemical analyte sensor |
US8050731B2 (en) | 2002-05-22 | 2011-11-01 | Dexcom, Inc. | Techniques to improve polyurethane membranes for implantable glucose sensors |
US8064977B2 (en) | 2002-05-22 | 2011-11-22 | Dexcom, Inc. | Silicone based membranes for use in implantable glucose sensors |
US8066639B2 (en) | 2003-06-10 | 2011-11-29 | Abbott Diabetes Care Inc. | Glucose measuring device for use in personal area network |
US8103456B2 (en) | 2009-01-29 | 2012-01-24 | Abbott Diabetes Care Inc. | Method and device for early signal attenuation detection using blood glucose measurements |
US8112240B2 (en) | 2005-04-29 | 2012-02-07 | Abbott Diabetes Care Inc. | Method and apparatus for providing leak detection in data monitoring and management systems |
US8123686B2 (en) | 2007-03-01 | 2012-02-28 | Abbott Diabetes Care Inc. | Method and apparatus for providing rolling data in communication systems |
US8149117B2 (en) | 2007-05-08 | 2012-04-03 | Abbott Diabetes Care Inc. | Analyte monitoring system and methods |
USRE43399E1 (en) | 2003-07-25 | 2012-05-22 | Dexcom, Inc. | Electrode systems for electrochemical sensors |
US8226891B2 (en) | 2006-03-31 | 2012-07-24 | Abbott Diabetes Care Inc. | Analyte monitoring devices and methods therefor |
US8255032B2 (en) | 2003-07-25 | 2012-08-28 | Dexcom, Inc. | Oxygen enhancing membrane systems for implantable devices |
US8275438B2 (en) | 2006-10-04 | 2012-09-25 | Dexcom, Inc. | Analyte sensor |
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US8287454B2 (en) | 1998-04-30 | 2012-10-16 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US8298142B2 (en) | 2006-10-04 | 2012-10-30 | Dexcom, Inc. | Analyte sensor |
US8346337B2 (en) | 1998-04-30 | 2013-01-01 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US8364231B2 (en) | 2006-10-04 | 2013-01-29 | Dexcom, Inc. | Analyte sensor |
US8364229B2 (en) | 2003-07-25 | 2013-01-29 | Dexcom, Inc. | Analyte sensors having a signal-to-noise ratio substantially unaffected by non-constant noise |
US8364230B2 (en) | 2006-10-04 | 2013-01-29 | Dexcom, Inc. | Analyte sensor |
US8396528B2 (en) | 2008-03-25 | 2013-03-12 | Dexcom, Inc. | Analyte sensor |
US8425416B2 (en) | 2006-10-04 | 2013-04-23 | Dexcom, Inc. | Analyte sensor |
US8425417B2 (en) | 2003-12-05 | 2013-04-23 | Dexcom, Inc. | Integrated device for continuous in vivo analyte detection and simultaneous control of an infusion device |
US8447376B2 (en) | 2006-10-04 | 2013-05-21 | Dexcom, Inc. | Analyte sensor |
US8449464B2 (en) | 2006-10-04 | 2013-05-28 | Dexcom, Inc. | Analyte sensor |
US8456301B2 (en) | 2007-05-08 | 2013-06-04 | Abbott Diabetes Care Inc. | Analyte monitoring system and methods |
US8465425B2 (en) | 1998-04-30 | 2013-06-18 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US8478377B2 (en) | 2006-10-04 | 2013-07-02 | Dexcom, Inc. | Analyte sensor |
US8509871B2 (en) | 2001-07-27 | 2013-08-13 | Dexcom, Inc. | Sensor head for use with implantable devices |
US8560039B2 (en) | 2008-09-19 | 2013-10-15 | Dexcom, Inc. | Particle-containing membrane and particulate electrode for analyte sensors |
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US8562528B2 (en) | 2006-10-04 | 2013-10-22 | Dexcom, Inc. | Analyte sensor |
US8583204B2 (en) | 2008-03-28 | 2013-11-12 | Dexcom, Inc. | Polymer membranes for continuous analyte sensors |
US8588881B2 (en) | 1991-03-04 | 2013-11-19 | Abbott Diabetes Care Inc. | Subcutaneous glucose electrode |
US8593109B2 (en) | 2006-03-31 | 2013-11-26 | Abbott Diabetes Care Inc. | Method and system for powering an electronic device |
US8612159B2 (en) | 1998-04-30 | 2013-12-17 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
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US8652043B2 (en) | 2001-01-02 | 2014-02-18 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US8665091B2 (en) | 2007-05-08 | 2014-03-04 | Abbott Diabetes Care Inc. | Method and device for determining elapsed sensor life |
US8682408B2 (en) | 2008-03-28 | 2014-03-25 | Dexcom, Inc. | Polymer membranes for continuous analyte sensors |
US8688188B2 (en) | 1998-04-30 | 2014-04-01 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US8732188B2 (en) | 2007-02-18 | 2014-05-20 | Abbott Diabetes Care Inc. | Method and system for providing contextual based medication dosage determination |
US8744546B2 (en) | 2005-05-05 | 2014-06-03 | Dexcom, Inc. | Cellulosic-based resistance domain for an analyte sensor |
US8771183B2 (en) | 2004-02-17 | 2014-07-08 | Abbott Diabetes Care Inc. | Method and system for providing data communication in continuous glucose monitoring and management system |
US8828201B2 (en) | 2009-07-02 | 2014-09-09 | Dexcom, Inc. | Analyte sensors and methods of manufacturing same |
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US8900431B2 (en) | 2008-08-27 | 2014-12-02 | Edwards Lifesciences Corporation | Analyte sensor |
US8929968B2 (en) | 2003-12-05 | 2015-01-06 | Dexcom, Inc. | Dual electrode system for a continuous analyte sensor |
US8930203B2 (en) | 2007-02-18 | 2015-01-06 | Abbott Diabetes Care Inc. | Multi-function analyte test device and methods therefor |
US8974386B2 (en) | 1998-04-30 | 2015-03-10 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US8993331B2 (en) | 2009-08-31 | 2015-03-31 | Abbott Diabetes Care Inc. | Analyte monitoring system and methods for managing power and noise |
US9066695B2 (en) | 1998-04-30 | 2015-06-30 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
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US9351677B2 (en) | 2009-07-02 | 2016-05-31 | Dexcom, Inc. | Analyte sensor with increased reference capacity |
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US9763609B2 (en) | 2003-07-25 | 2017-09-19 | Dexcom, Inc. | Analyte sensors having a signal-to-noise ratio substantially unaffected by non-constant noise |
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US11793936B2 (en) | 2009-05-29 | 2023-10-24 | Abbott Diabetes Care Inc. | Medical device antenna systems having external antenna configurations |
Families Citing this family (901)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04278450A (en) | 1991-03-04 | 1992-10-05 | Adam Heller | Biosensor and method for analyzing subject |
US5956501A (en) * | 1997-01-10 | 1999-09-21 | Health Hero Network, Inc. | Disease simulation system and method |
US20040062759A1 (en) * | 1995-07-12 | 2004-04-01 | Cygnus, Inc. | Hydrogel formulations for use in electroosmotic extraction and detection of glucose |
US6261440B1 (en) * | 1995-12-18 | 2001-07-17 | Abbott Laboratories | Interference free biosensor |
SE9700384D0 (en) * | 1997-02-04 | 1997-02-04 | Biacore Ab | Analytical method and apparatus |
ATE227844T1 (en) * | 1997-02-06 | 2002-11-15 | Therasense Inc | SMALL VOLUME SENSOR FOR IN-VITRO DETERMINATION |
US20050033132A1 (en) | 1997-03-04 | 2005-02-10 | Shults Mark C. | Analyte measuring device |
US7899511B2 (en) | 2004-07-13 | 2011-03-01 | Dexcom, Inc. | Low oxygen in vivo analyte sensor |
US7192450B2 (en) | 2003-05-21 | 2007-03-20 | Dexcom, Inc. | Porous membranes for use with implantable devices |
US8527026B2 (en) | 1997-03-04 | 2013-09-03 | Dexcom, Inc. | Device and method for determining analyte levels |
US7657297B2 (en) | 2004-05-03 | 2010-02-02 | Dexcom, Inc. | Implantable analyte sensor |
US6741877B1 (en) | 1997-03-04 | 2004-05-25 | Dexcom, Inc. | Device and method for determining analyte levels |
US9155496B2 (en) * | 1997-03-04 | 2015-10-13 | Dexcom, Inc. | Low oxygen in vivo analyte sensor |
US6862465B2 (en) | 1997-03-04 | 2005-03-01 | Dexcom, Inc. | Device and method for determining analyte levels |
US7220550B2 (en) * | 1997-05-14 | 2007-05-22 | Keensense, Inc. | Molecular wire injection sensors |
US6060327A (en) | 1997-05-14 | 2000-05-09 | Keensense, Inc. | Molecular wire injection sensors |
US6699667B2 (en) | 1997-05-14 | 2004-03-02 | Keensense, Inc. | Molecular wire injection sensors |
US6071391A (en) * | 1997-09-12 | 2000-06-06 | Nok Corporation | Enzyme electrode structure |
WO1999017095A1 (en) | 1997-09-30 | 1999-04-08 | M-Biotech, Inc. | Biosensor |
US6036924A (en) | 1997-12-04 | 2000-03-14 | Hewlett-Packard Company | Cassette of lancet cartridges for sampling blood |
US6579690B1 (en) * | 1997-12-05 | 2003-06-17 | Therasense, Inc. | Blood analyte monitoring through subcutaneous measurement |
US8071384B2 (en) | 1997-12-22 | 2011-12-06 | Roche Diagnostics Operations, Inc. | Control and calibration solutions and methods for their use |
US7390667B2 (en) * | 1997-12-22 | 2008-06-24 | Roche Diagnostics Operations, Inc. | System and method for analyte measurement using AC phase angle measurements |
US7407811B2 (en) * | 1997-12-22 | 2008-08-05 | Roche Diagnostics Operations, Inc. | System and method for analyte measurement using AC excitation |
US6479015B1 (en) | 1998-03-03 | 2002-11-12 | Pepex Biomedical, Llc | Apparatus for monitoring a level of a chemical species in a body fluid |
US6103033A (en) | 1998-03-04 | 2000-08-15 | Therasense, Inc. | Process for producing an electrochemical biosensor |
US6391005B1 (en) | 1998-03-30 | 2002-05-21 | Agilent Technologies, Inc. | Apparatus and method for penetration with shaft having a sensor for sensing penetration depth |
US6294281B1 (en) | 1998-06-17 | 2001-09-25 | Therasense, Inc. | Biological fuel cell and method |
US6251260B1 (en) | 1998-08-24 | 2001-06-26 | Therasense, Inc. | Potentiometric sensors for analytic determination |
US20060202859A1 (en) * | 1998-10-08 | 2006-09-14 | Mastrototaro John J | Telemetered characteristic monitor system and method of using the same |
US6591125B1 (en) * | 2000-06-27 | 2003-07-08 | Therasense, Inc. | Small volume in vitro analyte sensor with diffusible or non-leachable redox mediator |
EP1119285A1 (en) * | 1998-10-08 | 2001-08-01 | Minimed Inc. | Telemetered characteristic monitor system |
US6338790B1 (en) * | 1998-10-08 | 2002-01-15 | Therasense, Inc. | Small volume in vitro analyte sensor with diffusible or non-leachable redox mediator |
US7621893B2 (en) * | 1998-10-29 | 2009-11-24 | Medtronic Minimed, Inc. | Methods and apparatuses for detecting occlusions in an ambulatory infusion pump |
US7766873B2 (en) | 1998-10-29 | 2010-08-03 | Medtronic Minimed, Inc. | Method and apparatus for detecting occlusions in an ambulatory infusion pump |
US6424847B1 (en) | 1999-02-25 | 2002-07-23 | Medtronic Minimed, Inc. | Glucose monitor calibration methods |
CA2369336A1 (en) * | 1999-04-22 | 2000-11-02 | Cygnus, Inc. | Hydrogel in an iontophoretic device to measure glucose |
US6514689B2 (en) | 1999-05-11 | 2003-02-04 | M-Biotech, Inc. | Hydrogel biosensor |
US6475750B1 (en) | 1999-05-11 | 2002-11-05 | M-Biotech, Inc. | Glucose biosensor |
US7806886B2 (en) | 1999-06-03 | 2010-10-05 | Medtronic Minimed, Inc. | Apparatus and method for controlling insulin infusion with state variable feedback |
EP1192269A2 (en) * | 1999-06-18 | 2002-04-03 | Therasense, Inc. | MASS TRANSPORT LIMITED i IN VIVO /i ANALYTE SENSOR |
GB9918839D0 (en) * | 1999-08-11 | 1999-10-13 | Univ Manchester | Sensor devices and analytical methods for their use |
US7045054B1 (en) * | 1999-09-20 | 2006-05-16 | Roche Diagnostics Corporation | Small volume biosensor for continuous analyte monitoring |
US20050103624A1 (en) * | 1999-10-04 | 2005-05-19 | Bhullar Raghbir S. | Biosensor and method of making |
EP1222455B1 (en) * | 1999-10-07 | 2006-06-21 | Pepex Biomedical, LLC | Sensor comprising an outer insulating layer comprising a plurality of electrically conductive fibers covered by a sensitive material on at least some of the fibres and voids between the fibres |
US20060091006A1 (en) * | 1999-11-04 | 2006-05-04 | Yi Wang | Analyte sensor with insertion monitor, and methods |
US6616819B1 (en) | 1999-11-04 | 2003-09-09 | Therasense, Inc. | Small volume in vitro analyte sensor and methods |
US8444834B2 (en) | 1999-11-15 | 2013-05-21 | Abbott Diabetes Care Inc. | Redox polymers for use in analyte monitoring |
EP1230249B1 (en) * | 1999-11-15 | 2004-06-02 | Therasense, Inc. | Transition metal complexes with bidentate ligand having an imidazole ring |
US8268143B2 (en) * | 1999-11-15 | 2012-09-18 | Abbott Diabetes Care Inc. | Oxygen-effect free analyte sensor |
US7003336B2 (en) | 2000-02-10 | 2006-02-21 | Medtronic Minimed, Inc. | Analyte sensor method of making the same |
US6484045B1 (en) | 2000-02-10 | 2002-11-19 | Medtronic Minimed, Inc. | Analyte sensor and method of making the same |
US20030060765A1 (en) * | 2000-02-16 | 2003-03-27 | Arthur Campbell | Infusion device menu structure and method of using the same |
US7890295B2 (en) * | 2000-02-23 | 2011-02-15 | Medtronic Minimed, Inc. | Real time self-adjusting calibration algorithm |
EP1309856A2 (en) * | 2000-03-01 | 2003-05-14 | Nmi Naturwissenschaftliches Und Medizinisches Institut An Der Universität Tübingen | Use of an electrode array |
DE10010081A1 (en) * | 2000-03-02 | 2001-09-13 | Nmi Univ Tuebingen | Apparatus for an electro-physiological study of biological material comprises an array of measurement electrodes on the carrier and a counter electrode within the sample vessel |
CA2406814A1 (en) | 2000-03-17 | 2001-09-20 | F. Hoffmann-La Roche Ag | Implantable analyte sensor |
US6405066B1 (en) | 2000-03-17 | 2002-06-11 | The Regents Of The University Of California | Implantable analyte sensor |
AU2001263022A1 (en) * | 2000-05-12 | 2001-11-26 | Therasense, Inc. | Electrodes with multilayer membranes and methods of using and making the electrodes |
US6340421B1 (en) | 2000-05-16 | 2002-01-22 | Minimed Inc. | Microelectrogravimetric method for plating a biosensor |
US6540675B2 (en) | 2000-06-27 | 2003-04-01 | Rosedale Medical, Inc. | Analyte monitor |
DE10057832C1 (en) * | 2000-11-21 | 2002-02-21 | Hartmann Paul Ag | Blood analysis device has syringe mounted in casing, annular mounting carrying needles mounted behind test strip and being swiveled so that needle can be pushed through strip and aperture in casing to take blood sample |
US8641644B2 (en) * | 2000-11-21 | 2014-02-04 | Sanofi-Aventis Deutschland Gmbh | Blood testing apparatus having a rotatable cartridge with multiple lancing elements and testing means |
US6642015B2 (en) | 2000-12-29 | 2003-11-04 | Minimed Inc. | Hydrophilic polymeric material for coating biosensors |
WO2002063270A2 (en) * | 2001-02-05 | 2002-08-15 | Board Of Regents, The University Of Texas System | The use of mesoscale self-assembly and recognition to effect delivery of sensing reagent for arrayed sensors |
TW522127B (en) * | 2001-02-21 | 2003-03-01 | Daifuku Kk | Cargo storage facility |
US6572745B2 (en) | 2001-03-23 | 2003-06-03 | Virotek, L.L.C. | Electrochemical sensor and method thereof |
US7310543B2 (en) | 2001-03-26 | 2007-12-18 | Kumetrix, Inc. | Silicon microprobe with integrated biosensor |
US6676816B2 (en) * | 2001-05-11 | 2004-01-13 | Therasense, Inc. | Transition metal complexes with (pyridyl)imidazole ligands and sensors using said complexes |
US8070934B2 (en) | 2001-05-11 | 2011-12-06 | Abbott Diabetes Care Inc. | Transition metal complexes with (pyridyl)imidazole ligands |
US8226814B2 (en) * | 2001-05-11 | 2012-07-24 | Abbott Diabetes Care Inc. | Transition metal complexes with pyridyl-imidazole ligands |
US6932894B2 (en) * | 2001-05-15 | 2005-08-23 | Therasense, Inc. | Biosensor membranes composed of polymers containing heterocyclic nitrogens |
US7005273B2 (en) | 2001-05-16 | 2006-02-28 | Therasense, Inc. | Method for the determination of glycated hemoglobin |
US6674635B1 (en) | 2001-06-11 | 2004-01-06 | Avx Corporation | Protective coating for electrolytic capacitors |
US6875613B2 (en) * | 2001-06-12 | 2005-04-05 | Lifescan, Inc. | Biological fluid constituent sampling and measurement devices and methods |
US9226699B2 (en) * | 2002-04-19 | 2016-01-05 | Sanofi-Aventis Deutschland Gmbh | Body fluid sampling module with a continuous compression tissue interface surface |
US8337419B2 (en) | 2002-04-19 | 2012-12-25 | Sanofi-Aventis Deutschland Gmbh | Tissue penetration device |
DE60238119D1 (en) * | 2001-06-12 | 2010-12-09 | Pelikan Technologies Inc | ELECTRIC ACTUATOR ELEMENT FOR A LANZETTE |
US7025774B2 (en) | 2001-06-12 | 2006-04-11 | Pelikan Technologies, Inc. | Tissue penetration device |
US6721586B2 (en) * | 2001-06-12 | 2004-04-13 | Lifescan, Inc. | Percutaneous biological fluid sampling and analyte measurement devices and methods |
JP4272051B2 (en) | 2001-06-12 | 2009-06-03 | ペリカン テクノロジーズ インコーポレイテッド | Blood sampling apparatus and method |
WO2002100254A2 (en) * | 2001-06-12 | 2002-12-19 | Pelikan Technologies, Inc. | Method and apparatus for lancet launching device integrated onto a blood-sampling cartridge |
US6837988B2 (en) | 2001-06-12 | 2005-01-04 | Lifescan, Inc. | Biological fluid sampling and analyte measurement devices and methods |
US20070100255A1 (en) * | 2002-04-19 | 2007-05-03 | Pelikan Technologies, Inc. | Method and apparatus for body fluid sampling and analyte sensing |
US6793632B2 (en) * | 2001-06-12 | 2004-09-21 | Lifescan, Inc. | Percutaneous biological fluid constituent sampling and measurement devices and methods |
US7981056B2 (en) * | 2002-04-19 | 2011-07-19 | Pelikan Technologies, Inc. | Methods and apparatus for lancet actuation |
ES2336081T3 (en) * | 2001-06-12 | 2010-04-08 | Pelikan Technologies Inc. | SELF-OPTIMIZATION PUNCTURE DEVICE WITH MEANS OF ADAPTATION TO TEMPORARY VARIATIONS IN CUTANEOUS PROPERTIES. |
EP1404234B1 (en) | 2001-06-12 | 2011-02-09 | Pelikan Technologies Inc. | Apparatus for improving success rate of blood yield from a fingerstick |
US9795747B2 (en) | 2010-06-02 | 2017-10-24 | Sanofi-Aventis Deutschland Gmbh | Methods and apparatus for lancet actuation |
US6501976B1 (en) * | 2001-06-12 | 2002-12-31 | Lifescan, Inc. | Percutaneous biological fluid sampling and analyte measurement devices and methods |
US9427532B2 (en) | 2001-06-12 | 2016-08-30 | Sanofi-Aventis Deutschland Gmbh | Tissue penetration device |
DE10133363A1 (en) * | 2001-07-10 | 2003-01-30 | Infineon Technologies Ag | Measuring cell and measuring field with such measuring cells as well as using a measuring cell and using a measuring field |
US6702857B2 (en) | 2001-07-27 | 2004-03-09 | Dexcom, Inc. | Membrane for use with implantable devices |
AT410223B (en) * | 2001-08-09 | 2003-03-25 | Adlassnig Alexander Mag Dr | BIOSENSORS IN THICK FILM TECHNOLOGY |
US8227240B2 (en) * | 2001-08-14 | 2012-07-24 | The Washington University | Systems for screening pharmaceutical chemicals |
IL145182A (en) * | 2001-08-29 | 2005-11-20 | Yissum Res Dev Co | Self-powered biosensor |
US6671554B2 (en) | 2001-09-07 | 2003-12-30 | Medtronic Minimed, Inc. | Electronic lead for a medical implant device, method of making same, and method and apparatus for inserting same |
US6827702B2 (en) | 2001-09-07 | 2004-12-07 | Medtronic Minimed, Inc. | Safety limits for closed-loop infusion pump control |
US7025760B2 (en) * | 2001-09-07 | 2006-04-11 | Medtronic Minimed, Inc. | Method and system for non-vascular sensor implantation |
US8506550B2 (en) * | 2001-09-07 | 2013-08-13 | Medtronic Minimed, Inc. | Method and system for non-vascular sensor implantation |
US7323142B2 (en) * | 2001-09-07 | 2008-01-29 | Medtronic Minimed, Inc. | Sensor substrate and method of fabricating same |
US6915147B2 (en) | 2001-09-07 | 2005-07-05 | Medtronic Minimed, Inc. | Sensing apparatus and process |
EP1426757B9 (en) | 2001-09-14 | 2012-01-25 | ARKRAY, Inc. | Method, tool and device for measuring concentration |
US8465466B2 (en) | 2001-10-23 | 2013-06-18 | Medtronic Minimed, Inc | Method and system for non-vascular sensor implantation |
US6809507B2 (en) * | 2001-10-23 | 2004-10-26 | Medtronic Minimed, Inc. | Implantable sensor electrodes and electronic circuitry |
US7192766B2 (en) * | 2001-10-23 | 2007-03-20 | Medtronic Minimed, Inc. | Sensor containing molded solidified protein |
DE60237463D1 (en) * | 2001-11-16 | 2010-10-07 | Roche Diagnostics Gmbh | FLEXIBLE SENSOR AND MANUFACTURING PROCESS |
US6952604B2 (en) | 2001-12-21 | 2005-10-04 | Becton, Dickinson And Company | Minimally-invasive system and method for monitoring analyte levels |
US20040137547A1 (en) * | 2001-12-28 | 2004-07-15 | Medtronic Minimed, Inc. | Method for formulating a glucose oxidase enzyme with a desired property or properties and a glucose oxidase enzyme with the desired property |
US20030216628A1 (en) * | 2002-01-28 | 2003-11-20 | Bortz Jonathan David | Methods and systems for assessing glycemic control using predetermined pattern label analysis of blood glucose readings |
US7004928B2 (en) | 2002-02-08 | 2006-02-28 | Rosedale Medical, Inc. | Autonomous, ambulatory analyte monitor or drug delivery device |
US8010174B2 (en) | 2003-08-22 | 2011-08-30 | Dexcom, Inc. | Systems and methods for replacing signal artifacts in a glucose sensor data stream |
US9247901B2 (en) * | 2003-08-22 | 2016-02-02 | Dexcom, Inc. | Systems and methods for replacing signal artifacts in a glucose sensor data stream |
US9282925B2 (en) | 2002-02-12 | 2016-03-15 | Dexcom, Inc. | Systems and methods for replacing signal artifacts in a glucose sensor data stream |
US8260393B2 (en) | 2003-07-25 | 2012-09-04 | Dexcom, Inc. | Systems and methods for replacing signal data artifacts in a glucose sensor data stream |
US7101472B2 (en) * | 2002-03-13 | 2006-09-05 | The Charles Stark Draper Laboratory, Inc. | Microfluidic ion-selective electrode sensor system |
US7407570B2 (en) * | 2002-03-13 | 2008-08-05 | The Charles Stark Draper Laboratory, Inc. | Disposable, self-administered electrolyte test |
US8702624B2 (en) | 2006-09-29 | 2014-04-22 | Sanofi-Aventis Deutschland Gmbh | Analyte measurement device with a single shot actuator |
US7524293B2 (en) * | 2002-04-19 | 2009-04-28 | Pelikan Technologies, Inc. | Method and apparatus for penetrating tissue |
US7175642B2 (en) | 2002-04-19 | 2007-02-13 | Pelikan Technologies, Inc. | Methods and apparatus for lancet actuation |
US7563232B2 (en) * | 2002-04-19 | 2009-07-21 | Pelikan Technologies, Inc. | Method and apparatus for penetrating tissue |
US7481776B2 (en) | 2002-04-19 | 2009-01-27 | Pelikan Technologies, Inc. | Method and apparatus for penetrating tissue |
US9314194B2 (en) | 2002-04-19 | 2016-04-19 | Sanofi-Aventis Deutschland Gmbh | Tissue penetration device |
US20070142748A1 (en) * | 2002-04-19 | 2007-06-21 | Ajay Deshmukh | Tissue penetration device |
WO2004054455A1 (en) * | 2002-12-13 | 2004-07-01 | Pelikan Technologies, Inc. | Method and apparatus for measuring analytes |
US8221334B2 (en) * | 2002-04-19 | 2012-07-17 | Sanofi-Aventis Deutschland Gmbh | Method and apparatus for penetrating tissue |
US8784335B2 (en) | 2002-04-19 | 2014-07-22 | Sanofi-Aventis Deutschland Gmbh | Body fluid sampling device with a capacitive sensor |
US7901362B2 (en) | 2002-04-19 | 2011-03-08 | Pelikan Technologies, Inc. | Method and apparatus for penetrating tissue |
US8372016B2 (en) | 2002-04-19 | 2013-02-12 | Sanofi-Aventis Deutschland Gmbh | Method and apparatus for body fluid sampling and analyte sensing |
US7717863B2 (en) * | 2002-04-19 | 2010-05-18 | Pelikan Technologies, Inc. | Method and apparatus for penetrating tissue |
US7892183B2 (en) * | 2002-04-19 | 2011-02-22 | Pelikan Technologies, Inc. | Method and apparatus for body fluid sampling and analyte sensing |
US8360992B2 (en) * | 2002-04-19 | 2013-01-29 | Sanofi-Aventis Deutschland Gmbh | Method and apparatus for penetrating tissue |
US7491178B2 (en) | 2002-04-19 | 2009-02-17 | Pelikan Technologies, Inc. | Method and apparatus for penetrating tissue |
US7232451B2 (en) | 2002-04-19 | 2007-06-19 | Pelikan Technologies, Inc. | Method and apparatus for penetrating tissue |
US9248267B2 (en) | 2002-04-19 | 2016-02-02 | Sanofi-Aventis Deustchland Gmbh | Tissue penetration device |
US9795334B2 (en) | 2002-04-19 | 2017-10-24 | Sanofi-Aventis Deutschland Gmbh | Method and apparatus for penetrating tissue |
US7291117B2 (en) * | 2002-04-19 | 2007-11-06 | Pelikan Technologies, Inc. | Method and apparatus for penetrating tissue |
US7244265B2 (en) * | 2002-04-19 | 2007-07-17 | Pelikan Technologies, Inc. | Method and apparatus for penetrating tissue |
US7297122B2 (en) | 2002-04-19 | 2007-11-20 | Pelikan Technologies, Inc. | Method and apparatus for penetrating tissue |
US7547287B2 (en) * | 2002-04-19 | 2009-06-16 | Pelikan Technologies, Inc. | Method and apparatus for penetrating tissue |
US8579831B2 (en) | 2002-04-19 | 2013-11-12 | Sanofi-Aventis Deutschland Gmbh | Method and apparatus for penetrating tissue |
US7331931B2 (en) | 2002-04-19 | 2008-02-19 | Pelikan Technologies, Inc. | Method and apparatus for penetrating tissue |
US8267870B2 (en) * | 2002-04-19 | 2012-09-18 | Sanofi-Aventis Deutschland Gmbh | Method and apparatus for body fluid sampling with hybrid actuation |
US7976476B2 (en) | 2002-04-19 | 2011-07-12 | Pelikan Technologies, Inc. | Device and method for variable speed lancet |
US7371247B2 (en) | 2002-04-19 | 2008-05-13 | Pelikan Technologies, Inc | Method and apparatus for penetrating tissue |
US7674232B2 (en) | 2002-04-19 | 2010-03-09 | Pelikan Technologies, Inc. | Method and apparatus for penetrating tissue |
US7708701B2 (en) * | 2002-04-19 | 2010-05-04 | Pelikan Technologies, Inc. | Method and apparatus for a multi-use body fluid sampling device |
US7648468B2 (en) * | 2002-04-19 | 2010-01-19 | Pelikon Technologies, Inc. | Method and apparatus for penetrating tissue |
US7229458B2 (en) | 2002-04-19 | 2007-06-12 | Pelikan Technologies, Inc. | Method and apparatus for penetrating tissue |
US7909778B2 (en) | 2002-04-19 | 2011-03-22 | Pelikan Technologies, Inc. | Method and apparatus for penetrating tissue |
US7410468B2 (en) * | 2002-04-19 | 2008-08-12 | Pelikan Technologies, Inc. | Method and apparatus for penetrating tissue |
US7141058B2 (en) * | 2002-04-19 | 2006-11-28 | Pelikan Technologies, Inc. | Method and apparatus for a body fluid sampling device using illumination |
US7485128B2 (en) * | 2002-04-19 | 2009-02-03 | Pelikan Technologies, Inc. | Method and apparatus for penetrating tissue |
US9492111B2 (en) * | 2002-04-22 | 2016-11-15 | Medtronic Minimed, Inc. | Methods and materials for stabilizing analyte sensors |
US7153265B2 (en) * | 2002-04-22 | 2006-12-26 | Medtronic Minimed, Inc. | Anti-inflammatory biosensor for reduced biofouling and enhanced sensor performance |
US20070227907A1 (en) * | 2006-04-04 | 2007-10-04 | Rajiv Shah | Methods and materials for controlling the electrochemistry of analyte sensors |
US7813780B2 (en) * | 2005-12-13 | 2010-10-12 | Medtronic Minimed, Inc. | Biosensors and methods for making and using them |
US7368190B2 (en) * | 2002-05-02 | 2008-05-06 | Abbott Diabetes Care Inc. | Miniature biological fuel cell that is operational under physiological conditions, and associated devices and methods |
KR100464141B1 (en) * | 2002-05-10 | 2005-01-06 | 주식회사 엘바이오 | Biosensor |
US20060258761A1 (en) * | 2002-05-22 | 2006-11-16 | Robert Boock | Silicone based membranes for use in implantable glucose sensors |
US6864147B1 (en) | 2002-06-11 | 2005-03-08 | Avx Corporation | Protective coating for electrolytic capacitors |
US20040067481A1 (en) * | 2002-06-12 | 2004-04-08 | Leslie Leonard | Thermal sensor for fluid detection |
US8512276B2 (en) | 2002-07-24 | 2013-08-20 | Medtronic Minimed, Inc. | System for providing blood glucose measurements to an infusion device |
US7278983B2 (en) | 2002-07-24 | 2007-10-09 | Medtronic Minimed, Inc. | Physiological monitoring device for controlling a medication infusion device |
US20040068230A1 (en) * | 2002-07-24 | 2004-04-08 | Medtronic Minimed, Inc. | System for providing blood glucose measurements to an infusion device |
US7150975B2 (en) * | 2002-08-19 | 2006-12-19 | Animas Technologies, Llc | Hydrogel composition for measuring glucose flux |
US7291256B2 (en) * | 2002-09-12 | 2007-11-06 | Lifescan, Inc. | Mediator stabilized reagent compositions and methods for their use in electrochemical analyte detection assays |
US20040061232A1 (en) * | 2002-09-27 | 2004-04-01 | Medtronic Minimed, Inc. | Multilayer substrate |
US7736309B2 (en) * | 2002-09-27 | 2010-06-15 | Medtronic Minimed, Inc. | Implantable sensor method and system |
US8003513B2 (en) * | 2002-09-27 | 2011-08-23 | Medtronic Minimed, Inc. | Multilayer circuit devices and manufacturing methods using electroplated sacrificial structures |
EP2386758A1 (en) * | 2002-10-09 | 2011-11-16 | Abbott Diabetes Care Inc. | A method of pumping a predetermined dose of a medical fluid |
US7993108B2 (en) | 2002-10-09 | 2011-08-09 | Abbott Diabetes Care Inc. | Variable volume, shape memory actuated insulin dispensing pump |
US7727181B2 (en) * | 2002-10-09 | 2010-06-01 | Abbott Diabetes Care Inc. | Fluid delivery device with autocalibration |
US20050272989A1 (en) * | 2004-06-04 | 2005-12-08 | Medtronic Minimed, Inc. | Analyte sensors and methods for making and using them |
US9237865B2 (en) * | 2002-10-18 | 2016-01-19 | Medtronic Minimed, Inc. | Analyte sensors and methods for making and using them |
US7501053B2 (en) * | 2002-10-23 | 2009-03-10 | Abbott Laboratories | Biosensor having improved hematocrit and oxygen biases |
US7381184B2 (en) | 2002-11-05 | 2008-06-03 | Abbott Diabetes Care Inc. | Sensor inserter assembly |
US7670853B2 (en) * | 2002-11-05 | 2010-03-02 | Abbott Diabetes Care Inc. | Assay device, system and method |
US7638228B2 (en) * | 2002-11-27 | 2009-12-29 | Saint Louis University | Enzyme immobilization for use in biofuel cells and sensors |
US7025791B2 (en) * | 2002-12-02 | 2006-04-11 | Gi Dynamics, Inc. | Bariatric sleeve |
US7175897B2 (en) * | 2002-12-17 | 2007-02-13 | Avery Dennison Corporation | Adhesive articles which contain at least one hydrophilic or hydrophobic layer, method for making and uses for same |
US20040122353A1 (en) * | 2002-12-19 | 2004-06-24 | Medtronic Minimed, Inc. | Relay device for transferring information between a sensor system and a fluid delivery system |
US7265881B2 (en) * | 2002-12-20 | 2007-09-04 | Hewlett-Packard Development Company, L.P. | Method and apparatus for measuring assembly and alignment errors in sensor assemblies |
CA2511656A1 (en) | 2002-12-24 | 2004-07-15 | Ikeda Food Research Co., Ltd. | Coenzyme-binding glucose dehydrogenase |
US8574895B2 (en) | 2002-12-30 | 2013-11-05 | Sanofi-Aventis Deutschland Gmbh | Method and apparatus using optical techniques to measure analyte levels |
US20060195128A1 (en) * | 2002-12-31 | 2006-08-31 | Don Alden | Method and apparatus for loading penetrating members |
US20040126831A1 (en) * | 2002-12-31 | 2004-07-01 | Medtronic Minimed, Inc. | Functionalization of immobilized proteins |
US20040132167A1 (en) * | 2003-01-06 | 2004-07-08 | Peter Rule | Cartridge lance |
US7120483B2 (en) * | 2003-01-13 | 2006-10-10 | Isense Corporation | Methods for analyte sensing and measurement |
US7312197B2 (en) * | 2003-02-24 | 2007-12-25 | University Of Maryland, Baltimore | Method of modifying glucose activity using polypeptides selectively expressed in fat tissue |
US7052652B2 (en) | 2003-03-24 | 2006-05-30 | Rosedale Medical, Inc. | Analyte concentration detection devices and methods |
US6965791B1 (en) * | 2003-03-26 | 2005-11-15 | Sorenson Medical, Inc. | Implantable biosensor system, apparatus and method |
US20050177201A1 (en) * | 2003-03-31 | 2005-08-11 | Freeman Gary A. | Probe insertion pain reduction method and device |
US7587287B2 (en) | 2003-04-04 | 2009-09-08 | Abbott Diabetes Care Inc. | Method and system for transferring analyte test data |
US7134999B2 (en) | 2003-04-04 | 2006-11-14 | Dexcom, Inc. | Optimized sensor geometry for an implantable glucose sensor |
US20050037384A1 (en) * | 2003-04-15 | 2005-02-17 | Braig James R. | Analyte detection system |
WO2004097371A2 (en) * | 2003-04-25 | 2004-11-11 | Board Of Regents, The University Of Texas System | System and method for the detection of analytes |
US7679407B2 (en) | 2003-04-28 | 2010-03-16 | Abbott Diabetes Care Inc. | Method and apparatus for providing peak detection circuitry for data communication systems |
US9317922B2 (en) | 2003-05-16 | 2016-04-19 | Board Of Regents The University Of Texas System | Image and part recognition technology |
US7651850B2 (en) * | 2003-05-16 | 2010-01-26 | Board Of Regents, The University Of Texas System | Image and part recognition technology |
MXPA05012307A (en) * | 2003-05-16 | 2006-07-03 | Acorda Therapeutics Inc | Proteoglycan degrading mutants for treatment of cns. |
US7862519B1 (en) * | 2003-05-21 | 2011-01-04 | Isense Corporation | Easy-to-use multi-use body fluid specimen collection and analyte sensing assembly |
US7875293B2 (en) * | 2003-05-21 | 2011-01-25 | Dexcom, Inc. | Biointerface membranes incorporating bioactive agents |
ATE476137T1 (en) | 2003-05-30 | 2010-08-15 | Pelikan Technologies Inc | METHOD AND DEVICE FOR INJECTING LIQUID |
US7258673B2 (en) * | 2003-06-06 | 2007-08-21 | Lifescan, Inc | Devices, systems and methods for extracting bodily fluid and monitoring an analyte therein |
US20040253736A1 (en) * | 2003-06-06 | 2004-12-16 | Phil Stout | Analytical device with prediction module and related methods |
US20040249254A1 (en) * | 2003-06-06 | 2004-12-09 | Joel Racchini | Devices, systems and methods for extracting bodily fluid and monitoring an analyte therein |
DK1633235T3 (en) * | 2003-06-06 | 2014-08-18 | Sanofi Aventis Deutschland | Apparatus for sampling body fluid and detecting analyte |
WO2006001797A1 (en) | 2004-06-14 | 2006-01-05 | Pelikan Technologies, Inc. | Low pain penetrating |
US20060241666A1 (en) * | 2003-06-11 | 2006-10-26 | Briggs Barry D | Method and apparatus for body fluid sampling and analyte sensing |
US7645373B2 (en) | 2003-06-20 | 2010-01-12 | Roche Diagnostic Operations, Inc. | System and method for coding information on a biosensor test strip |
US8148164B2 (en) | 2003-06-20 | 2012-04-03 | Roche Diagnostics Operations, Inc. | System and method for determining the concentration of an analyte in a sample fluid |
US7452457B2 (en) | 2003-06-20 | 2008-11-18 | Roche Diagnostics Operations, Inc. | System and method for analyte measurement using dose sufficiency electrodes |
US7488601B2 (en) | 2003-06-20 | 2009-02-10 | Roche Diagnostic Operations, Inc. | System and method for determining an abused sensor during analyte measurement |
US7645421B2 (en) | 2003-06-20 | 2010-01-12 | Roche Diagnostics Operations, Inc. | System and method for coding information on a biosensor test strip |
US8679853B2 (en) | 2003-06-20 | 2014-03-25 | Roche Diagnostics Operations, Inc. | Biosensor with laser-sealed capillary space and method of making |
CA2529657C (en) | 2003-06-20 | 2011-04-12 | F. Hoffmann-La Roche Ag | Test strip with slot vent opening |
US8058077B2 (en) | 2003-06-20 | 2011-11-15 | Roche Diagnostics Operations, Inc. | Method for coding information on a biosensor test strip |
US8071030B2 (en) | 2003-06-20 | 2011-12-06 | Roche Diagnostics Operations, Inc. | Test strip with flared sample receiving chamber |
US7718439B2 (en) | 2003-06-20 | 2010-05-18 | Roche Diagnostics Operations, Inc. | System and method for coding information on a biosensor test strip |
US8206565B2 (en) | 2003-06-20 | 2012-06-26 | Roche Diagnostics Operation, Inc. | System and method for coding information on a biosensor test strip |
US7097788B2 (en) | 2003-06-30 | 2006-08-29 | The Board Of Trustees Of The University Of Illinois | Conducting inks |
US7695239B2 (en) * | 2003-07-14 | 2010-04-13 | Fortrend Engineering Corporation | End effector gripper arms having corner grippers which reorient reticle during transfer |
WO2005010518A1 (en) * | 2003-07-23 | 2005-02-03 | Dexcom, Inc. | Rolled electrode array and its method for manufacture |
US20050176136A1 (en) * | 2003-11-19 | 2005-08-11 | Dexcom, Inc. | Afinity domain for analyte sensor |
US7467003B2 (en) * | 2003-12-05 | 2008-12-16 | Dexcom, Inc. | Dual electrode system for a continuous analyte sensor |
US7366556B2 (en) | 2003-12-05 | 2008-04-29 | Dexcom, Inc. | Dual electrode system for a continuous analyte sensor |
US8423113B2 (en) | 2003-07-25 | 2013-04-16 | Dexcom, Inc. | Systems and methods for processing sensor data |
US7651596B2 (en) | 2005-04-08 | 2010-01-26 | Dexcom, Inc. | Cellulosic-based interference domain for an analyte sensor |
US7460898B2 (en) * | 2003-12-05 | 2008-12-02 | Dexcom, Inc. | Dual electrode system for a continuous analyte sensor |
US7424318B2 (en) | 2003-12-05 | 2008-09-09 | Dexcom, Inc. | Dual electrode system for a continuous analyte sensor |
WO2005012871A2 (en) * | 2003-07-25 | 2005-02-10 | Dexcom, Inc. | Increasing bias for oxygen production in an electrode system |
US20070173709A1 (en) * | 2005-04-08 | 2007-07-26 | Petisce James R | Membranes for an analyte sensor |
US7108778B2 (en) * | 2003-07-25 | 2006-09-19 | Dexcom, Inc. | Electrochemical sensors including electrode systems with increased oxygen generation |
US8160669B2 (en) | 2003-08-01 | 2012-04-17 | Dexcom, Inc. | Transcutaneous analyte sensor |
US8275437B2 (en) | 2003-08-01 | 2012-09-25 | Dexcom, Inc. | Transcutaneous analyte sensor |
US7774145B2 (en) | 2003-08-01 | 2010-08-10 | Dexcom, Inc. | Transcutaneous analyte sensor |
US8761856B2 (en) | 2003-08-01 | 2014-06-24 | Dexcom, Inc. | System and methods for processing analyte sensor data |
US7933639B2 (en) | 2003-08-01 | 2011-04-26 | Dexcom, Inc. | System and methods for processing analyte sensor data |
US9135402B2 (en) | 2007-12-17 | 2015-09-15 | Dexcom, Inc. | Systems and methods for processing sensor data |
US8622905B2 (en) | 2003-08-01 | 2014-01-07 | Dexcom, Inc. | System and methods for processing analyte sensor data |
US8369919B2 (en) | 2003-08-01 | 2013-02-05 | Dexcom, Inc. | Systems and methods for processing sensor data |
US7519408B2 (en) | 2003-11-19 | 2009-04-14 | Dexcom, Inc. | Integrated receiver for continuous analyte sensor |
US8060173B2 (en) * | 2003-08-01 | 2011-11-15 | Dexcom, Inc. | System and methods for processing analyte sensor data |
US8845536B2 (en) | 2003-08-01 | 2014-09-30 | Dexcom, Inc. | Transcutaneous analyte sensor |
US8233959B2 (en) * | 2003-08-22 | 2012-07-31 | Dexcom, Inc. | Systems and methods for processing analyte sensor data |
US20140121989A1 (en) | 2003-08-22 | 2014-05-01 | Dexcom, Inc. | Systems and methods for processing analyte sensor data |
US7306641B2 (en) * | 2003-09-12 | 2007-12-11 | Hewlett-Packard Development Company, L.P. | Integral fuel cartridge and filter |
US7150820B2 (en) * | 2003-09-22 | 2006-12-19 | Semitool, Inc. | Thiourea- and cyanide-free bath and process for electrolytic etching of gold |
US7433727B2 (en) * | 2003-09-24 | 2008-10-07 | Legacy Good Samaritan Hospital And Medical Center | Implantable biosensor |
EP1671096A4 (en) | 2003-09-29 | 2009-09-16 | Pelikan Technologies Inc | Method and apparatus for an improved sample capture device |
EP1680014A4 (en) | 2003-10-14 | 2009-01-21 | Pelikan Technologies Inc | Method and apparatus for a variable user interface |
US20050090607A1 (en) * | 2003-10-28 | 2005-04-28 | Dexcom, Inc. | Silicone composition for biocompatible membrane |
US7299082B2 (en) * | 2003-10-31 | 2007-11-20 | Abbott Diabetes Care, Inc. | Method of calibrating an analyte-measurement device, and associated methods, devices and systems |
US8859151B2 (en) | 2003-11-05 | 2014-10-14 | St. Louis University | Immobilized enzymes in biocathodes |
USD914881S1 (en) | 2003-11-05 | 2021-03-30 | Abbott Diabetes Care Inc. | Analyte sensor electronic mount |
US20080197024A1 (en) * | 2003-12-05 | 2008-08-21 | Dexcom, Inc. | Analyte sensor |
US8287453B2 (en) | 2003-12-05 | 2012-10-16 | Dexcom, Inc. | Analyte sensor |
EP2228642B1 (en) | 2003-12-08 | 2017-07-19 | DexCom, Inc. | Systems and methods for improving electrochemical analyte sensors |
EP2316331B1 (en) | 2003-12-09 | 2016-06-29 | Dexcom, Inc. | Signal processing for continuous analyte sensor |
US7822454B1 (en) | 2005-01-03 | 2010-10-26 | Pelikan Technologies, Inc. | Fluid sampling device with improved analyte detecting member configuration |
EP1706026B1 (en) | 2003-12-31 | 2017-03-01 | Sanofi-Aventis Deutschland GmbH | Method and apparatus for improving fluidic flow and sample capture |
US7637868B2 (en) * | 2004-01-12 | 2009-12-29 | Dexcom, Inc. | Composite material for implantable device |
DE102004004031B4 (en) * | 2004-01-27 | 2019-03-28 | Disetronic Licensing Ag | Adjustment of sensors or measuring systems |
PL1718200T3 (en) | 2004-02-05 | 2017-01-31 | Dermal Devices Inc. | Apparatus for measuring blood glucose using sub-dermal body tissue impedance measurements |
RU2006132051A (en) | 2004-02-06 | 2008-03-20 | БАЙЕР ХЕЛТКЭР ЭлЭлСи (US) | OXIDIZABLE COMPOUNDS AS AN INTERNAL STANDARD FOR BIOSENSORS AND METHOD OF APPLICATION |
US8165651B2 (en) * | 2004-02-09 | 2012-04-24 | Abbott Diabetes Care Inc. | Analyte sensor, and associated system and method employing a catalytic agent |
US7699964B2 (en) * | 2004-02-09 | 2010-04-20 | Abbott Diabetes Care Inc. | Membrane suitable for use in an analyte sensor, analyte sensor, and associated method |
US7807043B2 (en) * | 2004-02-23 | 2010-10-05 | Oakville Hong Kong Company Limited | Microfluidic test device |
US8936560B2 (en) * | 2004-03-10 | 2015-01-20 | Vision Quest Industries Incorporated | Bracing and electrostimulation for arthritis |
ITVI20040046A1 (en) * | 2004-03-10 | 2004-06-10 | Bona Gian Domenico Dalla | ELECTRODE FOR ELECTROSTIMULATORS |
CN1981404A (en) * | 2004-03-15 | 2007-06-13 | 圣路易斯大学 | Microfluidic biofuel cell |
US8792955B2 (en) | 2004-05-03 | 2014-07-29 | Dexcom, Inc. | Transcutaneous analyte sensor |
US8828203B2 (en) * | 2004-05-20 | 2014-09-09 | Sanofi-Aventis Deutschland Gmbh | Printable hydrogels for biosensors |
WO2005120365A1 (en) | 2004-06-03 | 2005-12-22 | Pelikan Technologies, Inc. | Method and apparatus for a fluid sampling device |
US9775553B2 (en) * | 2004-06-03 | 2017-10-03 | Sanofi-Aventis Deutschland Gmbh | Method and apparatus for a fluid sampling device |
CA2858901C (en) | 2004-06-04 | 2024-01-16 | Carolyn Anderson | Diabetes care host-client architecture and data management system |
US20070100222A1 (en) * | 2004-06-14 | 2007-05-03 | Metronic Minimed, Inc. | Analyte sensing apparatus for hospital use |
US7569126B2 (en) | 2004-06-18 | 2009-08-04 | Roche Diagnostics Operations, Inc. | System and method for quality assurance of a biosensor test strip |
US7556723B2 (en) * | 2004-06-18 | 2009-07-07 | Roche Diagnostics Operations, Inc. | Electrode design for biosensor |
US20060001538A1 (en) | 2004-06-30 | 2006-01-05 | Ulrich Kraft | Methods of monitoring the concentration of an analyte |
US20060001551A1 (en) * | 2004-06-30 | 2006-01-05 | Ulrich Kraft | Analyte monitoring system with wireless alarm |
US20060016700A1 (en) * | 2004-07-13 | 2006-01-26 | Dexcom, Inc. | Transcutaneous analyte sensor |
US8452368B2 (en) * | 2004-07-13 | 2013-05-28 | Dexcom, Inc. | Transcutaneous analyte sensor |
EP2335585B1 (en) | 2004-07-13 | 2016-09-07 | DexCom, Inc. | Transcutaneous analyte sensor |
US8565848B2 (en) * | 2004-07-13 | 2013-10-22 | Dexcom, Inc. | Transcutaneous analyte sensor |
US7344500B2 (en) * | 2004-07-27 | 2008-03-18 | Medtronic Minimed, Inc. | Sensing system with auxiliary display |
US7109271B2 (en) * | 2004-07-28 | 2006-09-19 | Lifescan, Inc. | Redox polymers for use in electrochemical-based sensors |
US7534330B2 (en) * | 2004-08-24 | 2009-05-19 | University Of South Florida | Epoxy enhanced polymer membrane to increase durability of biosensors |
US7572356B2 (en) * | 2004-08-31 | 2009-08-11 | Lifescan Scotland Limited | Electrochemical-based sensor with a redox polymer and redox enzyme entrapped by a dialysis membrane |
WO2006027702A2 (en) * | 2004-09-09 | 2006-03-16 | Albatros Technologies Gmbh & Co. Kg | Analyte detecting member with a 3d hydrogel |
US7351770B2 (en) * | 2004-09-30 | 2008-04-01 | Lifescan, Inc. | Ionic hydrophilic high molecular weight redox polymers for use in enzymatic electrochemical-based sensors |
JP5502279B2 (en) * | 2004-10-28 | 2014-05-28 | エコー セラピューティクス, インコーポレイテッド | System and method for analyte sampling and analysis using hydrogels |
US7303543B1 (en) | 2004-12-03 | 2007-12-04 | Medtronic Minimed, Inc. | Medication infusion set |
RU2430264C2 (en) * | 2004-12-16 | 2011-09-27 | Индепендент Нэчурэл Ресорсиз, Инк. | Power system built around float-type pump |
US8571624B2 (en) | 2004-12-29 | 2013-10-29 | Abbott Diabetes Care Inc. | Method and apparatus for mounting a data transmission device in a communication system |
US9398882B2 (en) | 2005-09-30 | 2016-07-26 | Abbott Diabetes Care Inc. | Method and apparatus for providing analyte sensor and data processing device |
US9636450B2 (en) | 2007-02-19 | 2017-05-02 | Udo Hoss | Pump system modular components for delivering medication and analyte sensing at seperate insertion sites |
US8029441B2 (en) | 2006-02-28 | 2011-10-04 | Abbott Diabetes Care Inc. | Analyte sensor transmitter unit configuration for a data monitoring and management system |
US7731657B2 (en) * | 2005-08-30 | 2010-06-08 | Abbott Diabetes Care Inc. | Analyte sensor introducer and methods of use |
US20090105569A1 (en) * | 2006-04-28 | 2009-04-23 | Abbott Diabetes Care, Inc. | Introducer Assembly and Methods of Use |
US9743862B2 (en) | 2011-03-31 | 2017-08-29 | Abbott Diabetes Care Inc. | Systems and methods for transcutaneously implanting medical devices |
US9259175B2 (en) | 2006-10-23 | 2016-02-16 | Abbott Diabetes Care, Inc. | Flexible patch for fluid delivery and monitoring body analytes |
US20110073475A1 (en) * | 2009-08-29 | 2011-03-31 | Abbott Diabetes Care Inc. | Analyte Sensor |
US7697967B2 (en) * | 2005-12-28 | 2010-04-13 | Abbott Diabetes Care Inc. | Method and apparatus for providing analyte sensor insertion |
US9788771B2 (en) | 2006-10-23 | 2017-10-17 | Abbott Diabetes Care Inc. | Variable speed sensor insertion devices and methods of use |
US10226207B2 (en) | 2004-12-29 | 2019-03-12 | Abbott Diabetes Care Inc. | Sensor inserter having introducer |
US8512243B2 (en) | 2005-09-30 | 2013-08-20 | Abbott Diabetes Care Inc. | Integrated introducer and transmitter assembly and methods of use |
US9572534B2 (en) | 2010-06-29 | 2017-02-21 | Abbott Diabetes Care Inc. | Devices, systems and methods for on-skin or on-body mounting of medical devices |
US7883464B2 (en) | 2005-09-30 | 2011-02-08 | Abbott Diabetes Care Inc. | Integrated transmitter unit and sensor introducer mechanism and methods of use |
US8333714B2 (en) * | 2006-09-10 | 2012-12-18 | Abbott Diabetes Care Inc. | Method and system for providing an integrated analyte sensor insertion device and data processing unit |
US8652831B2 (en) | 2004-12-30 | 2014-02-18 | Sanofi-Aventis Deutschland Gmbh | Method and apparatus for analyte measurement test time |
US20080214917A1 (en) * | 2004-12-30 | 2008-09-04 | Dirk Boecker | Method and apparatus for analyte measurement test time |
US20060166629A1 (en) * | 2005-01-24 | 2006-07-27 | Therasense, Inc. | Method and apparatus for providing EMC Class-B compliant RF transmitter for data monitoring an detection systems |
US7704229B2 (en) * | 2005-02-03 | 2010-04-27 | Medtronic Minimed, Inc. | Insertion device |
US7545272B2 (en) | 2005-02-08 | 2009-06-09 | Therasense, Inc. | RF tag on test strips, test strip vials and boxes |
US20060184065A1 (en) * | 2005-02-10 | 2006-08-17 | Ajay Deshmukh | Method and apparatus for storing an analyte sampling and measurement device |
US20060184104A1 (en) * | 2005-02-15 | 2006-08-17 | Medtronic Minimed, Inc. | Needle guard |
US20090076360A1 (en) | 2007-09-13 | 2009-03-19 | Dexcom, Inc. | Transcutaneous analyte sensor |
US8133178B2 (en) | 2006-02-22 | 2012-03-13 | Dexcom, Inc. | Analyte sensor |
EP1863559A4 (en) | 2005-03-21 | 2008-07-30 | Abbott Diabetes Care Inc | Method and system for providing integrated medication infusion and analyte monitoring system |
EP1705485B1 (en) * | 2005-03-23 | 2008-08-20 | Roche Diagnostics GmbH | Procedure for the determination of the glucose concentration by fluorescence polarization |
EP2365073A1 (en) | 2005-03-25 | 2011-09-14 | Ikeda Food Research Co. Ltd. | Coenzyme-linked glucose dehydrogenase and polynucleotide encoding the same |
US20060249381A1 (en) * | 2005-05-05 | 2006-11-09 | Petisce James R | Cellulosic-based resistance domain for an analyte sensor |
US7465380B2 (en) * | 2005-04-12 | 2008-12-16 | Lifescan Scotland, Ltd. | Water-miscible conductive ink for use in enzymatic electrochemical-based sensors |
US20060226007A1 (en) * | 2005-04-12 | 2006-10-12 | Rodgers James I | Method for manufacturing an enzymatic electrochemical-based sensor |
AU2006201333A1 (en) | 2005-04-12 | 2006-11-02 | Lifescan Scotland Limited | Water-miscible conductive ink for use in enzymatic electrochemical-based sensors |
US7588670B2 (en) * | 2005-04-12 | 2009-09-15 | Lifescan Scotland Limited | Enzymatic electrochemical-based sensor |
CA2605084C (en) * | 2005-04-29 | 2013-11-05 | Norman R. Byrne | Center connect single-sided junction block |
US7768408B2 (en) | 2005-05-17 | 2010-08-03 | Abbott Diabetes Care Inc. | Method and system for providing data management in data monitoring system |
US7620437B2 (en) * | 2005-06-03 | 2009-11-17 | Abbott Diabetes Care Inc. | Method and apparatus for providing rechargeable power in data monitoring and management systems |
US20060272652A1 (en) * | 2005-06-03 | 2006-12-07 | Medtronic Minimed, Inc. | Virtual patient software system for educating and treating individuals with diabetes |
US20070033074A1 (en) * | 2005-06-03 | 2007-02-08 | Medtronic Minimed, Inc. | Therapy management system |
US20060281187A1 (en) | 2005-06-13 | 2006-12-14 | Rosedale Medical, Inc. | Analyte detection devices and methods with hematocrit/volume correction and feedback control |
US20070016449A1 (en) * | 2005-06-29 | 2007-01-18 | Gary Cohen | Flexible glucose analysis using varying time report deltas and configurable glucose target ranges |
AR054851A1 (en) | 2005-07-20 | 2007-07-18 | Bayer Healthcare Llc | REGULATED AMPEROMETRY |
US20070066956A1 (en) * | 2005-07-27 | 2007-03-22 | Medtronic Minimed, Inc. | Systems and methods for entering temporary basal rate pattern in an infusion device |
US20070036770A1 (en) * | 2005-08-12 | 2007-02-15 | Wagner Darrell O | Biologic device for regulation of gene expression and method therefor |
US7737581B2 (en) | 2005-08-16 | 2010-06-15 | Medtronic Minimed, Inc. | Method and apparatus for predicting end of battery life |
US20090227855A1 (en) * | 2005-08-16 | 2009-09-10 | Medtronic Minimed, Inc. | Controller device for an infusion pump |
US20070060869A1 (en) * | 2005-08-16 | 2007-03-15 | Tolle Mike C V | Controller device for an infusion pump |
US20070093786A1 (en) * | 2005-08-16 | 2007-04-26 | Medtronic Minimed, Inc. | Watch controller for a medical device |
US20070060870A1 (en) * | 2005-08-16 | 2007-03-15 | Tolle Mike Charles V | Controller device for an infusion pump |
EP1921980A4 (en) | 2005-08-31 | 2010-03-10 | Univ Virginia | Improving the accuracy of continuous glucose sensors |
US7713240B2 (en) | 2005-09-13 | 2010-05-11 | Medtronic Minimed, Inc. | Modular external infusion device |
GB2430749B (en) * | 2005-09-21 | 2007-11-28 | Schlumberger Holdings | Electro-chemical sensor |
US7725148B2 (en) | 2005-09-23 | 2010-05-25 | Medtronic Minimed, Inc. | Sensor with layered electrodes |
US9072476B2 (en) | 2005-09-23 | 2015-07-07 | Medtronic Minimed, Inc. | Flexible sensor apparatus |
US7704704B2 (en) * | 2005-09-28 | 2010-04-27 | The Texas A&M University System | Implantable system for glucose monitoring using fluorescence quenching |
US8801631B2 (en) | 2005-09-30 | 2014-08-12 | Intuity Medical, Inc. | Devices and methods for facilitating fluid transport |
US7756561B2 (en) | 2005-09-30 | 2010-07-13 | Abbott Diabetes Care Inc. | Method and apparatus for providing rechargeable power in data monitoring and management systems |
US8382681B2 (en) | 2005-09-30 | 2013-02-26 | Intuity Medical, Inc. | Fully integrated wearable or handheld monitor |
US8404100B2 (en) | 2005-09-30 | 2013-03-26 | Bayer Healthcare Llc | Gated voltammetry |
US8880138B2 (en) * | 2005-09-30 | 2014-11-04 | Abbott Diabetes Care Inc. | Device for channeling fluid and methods of use |
US9521968B2 (en) | 2005-09-30 | 2016-12-20 | Abbott Diabetes Care Inc. | Analyte sensor retention mechanism and methods of use |
US20070191736A1 (en) * | 2005-10-04 | 2007-08-16 | Don Alden | Method for loading penetrating members in a collection device |
US20070276290A1 (en) * | 2005-10-04 | 2007-11-29 | Dirk Boecker | Tissue Penetrating Apparatus |
US20100145158A1 (en) * | 2005-10-06 | 2010-06-10 | Hamilton Scott E | Pod Connected Data Monitoring System |
US7583190B2 (en) | 2005-10-31 | 2009-09-01 | Abbott Diabetes Care Inc. | Method and apparatus for providing data communication in data monitoring and management systems |
US20090054747A1 (en) * | 2005-10-31 | 2009-02-26 | Abbott Diabetes Care, Inc. | Method and system for providing analyte sensor tester isolation |
WO2007084249A2 (en) * | 2005-11-02 | 2007-07-26 | St.Louis University | Direct electron transfer using enzymes in bioanodes, biocathodes, and biofuel cells |
CN101366137A (en) * | 2005-11-02 | 2009-02-11 | 圣路易斯大学 | Enzymes immobilized in hydrophobically modified polysaccharides |
US8455088B2 (en) | 2005-12-23 | 2013-06-04 | Boston Scientific Scimed, Inc. | Spun nanofiber, medical devices, and methods |
US7674864B2 (en) * | 2005-12-23 | 2010-03-09 | Boston Scientific Scimed, Inc. | Polymeric hybrid precursors, polymeric hybrid precursor composite matrices, medical devices, and methods |
US11298058B2 (en) | 2005-12-28 | 2022-04-12 | Abbott Diabetes Care Inc. | Method and apparatus for providing analyte sensor insertion |
WO2007120363A2 (en) * | 2005-12-28 | 2007-10-25 | Abbott Diabetes Care, Inc. | Medical device insertion |
US8515518B2 (en) | 2005-12-28 | 2013-08-20 | Abbott Diabetes Care Inc. | Analyte monitoring |
US8353881B2 (en) * | 2005-12-28 | 2013-01-15 | Abbott Diabetes Care Inc. | Infusion sets for the delivery of a therapeutic substance to a patient |
US8160670B2 (en) * | 2005-12-28 | 2012-04-17 | Abbott Diabetes Care Inc. | Analyte monitoring: stabilizer for subcutaneous glucose sensor with incorporated antiglycolytic agent |
US7985330B2 (en) | 2005-12-30 | 2011-07-26 | Medtronic Minimed, Inc. | Method and system for detecting age, hydration, and functional states of sensors using electrochemical impedance spectroscopy |
US7774038B2 (en) * | 2005-12-30 | 2010-08-10 | Medtronic Minimed, Inc. | Real-time self-calibrating sensor system and method |
US8114268B2 (en) * | 2005-12-30 | 2012-02-14 | Medtronic Minimed, Inc. | Method and system for remedying sensor malfunctions detected by electrochemical impedance spectroscopy |
US8114269B2 (en) | 2005-12-30 | 2012-02-14 | Medtronic Minimed, Inc. | System and method for determining the point of hydration and proper time to apply potential to a glucose sensor |
US20070169533A1 (en) * | 2005-12-30 | 2007-07-26 | Medtronic Minimed, Inc. | Methods and systems for detecting the hydration of sensors |
US20070173712A1 (en) * | 2005-12-30 | 2007-07-26 | Medtronic Minimed, Inc. | Method of and system for stabilization of sensors |
US9757061B2 (en) | 2006-01-17 | 2017-09-12 | Dexcom, Inc. | Low oxygen in vivo analyte sensor |
WO2007084130A1 (en) | 2006-01-17 | 2007-07-26 | Dexcom, Inc. | Low oxygen in vivo analyte sensor |
US7736310B2 (en) * | 2006-01-30 | 2010-06-15 | Abbott Diabetes Care Inc. | On-body medical device securement |
US8344966B2 (en) | 2006-01-31 | 2013-01-01 | Abbott Diabetes Care Inc. | Method and system for providing a fault tolerant display unit in an electronic device |
EP1993637A2 (en) * | 2006-02-15 | 2008-11-26 | Medingo Ltd. | Systems and methods for sensing analyte and dispensing therapeutic fluid |
ES2871822T3 (en) | 2006-02-22 | 2021-11-02 | Dexcom Inc | Analyte sensor |
US20090143658A1 (en) * | 2006-02-27 | 2009-06-04 | Edwards Lifesciences Corporation | Analyte sensor |
US7885698B2 (en) | 2006-02-28 | 2011-02-08 | Abbott Diabetes Care Inc. | Method and system for providing continuous calibration of implantable analyte sensors |
US7826879B2 (en) * | 2006-02-28 | 2010-11-02 | Abbott Diabetes Care Inc. | Analyte sensors and methods of use |
US7981034B2 (en) * | 2006-02-28 | 2011-07-19 | Abbott Diabetes Care Inc. | Smart messages and alerts for an infusion delivery and management system |
EP4218548A1 (en) | 2006-03-09 | 2023-08-02 | Dexcom, Inc. | Systems and methods for processing analyte sensor data |
US7801582B2 (en) | 2006-03-31 | 2010-09-21 | Abbott Diabetes Care Inc. | Analyte monitoring and management system and methods therefor |
US20130184547A1 (en) | 2011-12-30 | 2013-07-18 | Abbott Diabetes Care Inc. | Method and Apparatus for Determining Medication Dose Information |
US8478557B2 (en) | 2009-07-31 | 2013-07-02 | Abbott Diabetes Care Inc. | Method and apparatus for providing analyte monitoring system calibration accuracy |
US9392969B2 (en) | 2008-08-31 | 2016-07-19 | Abbott Diabetes Care Inc. | Closed loop control and signal attenuation detection |
US7653425B2 (en) * | 2006-08-09 | 2010-01-26 | Abbott Diabetes Care Inc. | Method and system for providing calibration of an analyte sensor in an analyte monitoring system |
US7630748B2 (en) | 2006-10-25 | 2009-12-08 | Abbott Diabetes Care Inc. | Method and system for providing analyte monitoring |
US8224415B2 (en) | 2009-01-29 | 2012-07-17 | Abbott Diabetes Care Inc. | Method and device for providing offset model based calibration for analyte sensor |
US8346335B2 (en) * | 2008-03-28 | 2013-01-01 | Abbott Diabetes Care Inc. | Analyte sensor calibration management |
US8219173B2 (en) * | 2008-09-30 | 2012-07-10 | Abbott Diabetes Care Inc. | Optimizing analyte sensor calibration |
US9675290B2 (en) | 2012-10-30 | 2017-06-13 | Abbott Diabetes Care Inc. | Sensitivity calibration of in vivo sensors used to measure analyte concentration |
US7618369B2 (en) | 2006-10-02 | 2009-11-17 | Abbott Diabetes Care Inc. | Method and system for dynamically updating calibration parameters for an analyte sensor |
US8140312B2 (en) * | 2007-05-14 | 2012-03-20 | Abbott Diabetes Care Inc. | Method and system for determining analyte levels |
US8473022B2 (en) * | 2008-01-31 | 2013-06-25 | Abbott Diabetes Care Inc. | Analyte sensor with time lag compensation |
US8374668B1 (en) | 2007-10-23 | 2013-02-12 | Abbott Diabetes Care Inc. | Analyte sensor with lag compensation |
WO2007127616A2 (en) * | 2006-04-12 | 2007-11-08 | Benjamin Pless | Cavitation heating system and method |
US8073008B2 (en) * | 2006-04-28 | 2011-12-06 | Medtronic Minimed, Inc. | Subnetwork synchronization and variable transmit synchronization techniques for a wireless medical device network |
US20070253380A1 (en) * | 2006-04-28 | 2007-11-01 | James Jollota | Data translation device with nonvolatile memory for a networked medical device system |
US20070254593A1 (en) * | 2006-04-28 | 2007-11-01 | Medtronic Minimed, Inc. | Wireless data communication for a medical device network that supports a plurality of data communication modes |
US20070255126A1 (en) * | 2006-04-28 | 2007-11-01 | Moberg Sheldon B | Data communication in networked fluid infusion systems |
US7942844B2 (en) * | 2006-04-28 | 2011-05-17 | Medtronic Minimed, Inc. | Remote monitoring for networked fluid infusion systems |
US20090054749A1 (en) * | 2006-05-31 | 2009-02-26 | Abbott Diabetes Care, Inc. | Method and System for Providing Data Transmission in a Data Management System |
EP2030012A1 (en) * | 2006-06-19 | 2009-03-04 | Roche Diagnostics GmbH | Amperometric sensor and method for its manufacturing |
US9700252B2 (en) | 2006-06-19 | 2017-07-11 | Roche Diabetes Care, Inc. | Amperometric sensor and method for its manufacturing |
US20080004601A1 (en) * | 2006-06-28 | 2008-01-03 | Abbott Diabetes Care, Inc. | Analyte Monitoring and Therapy Management System and Methods Therefor |
JP4665235B2 (en) * | 2006-06-29 | 2011-04-06 | 池田食研株式会社 | FAD-linked glucose dehydrogenase gene |
US7699973B2 (en) * | 2006-06-30 | 2010-04-20 | Abbott Diabetes Care Inc. | Rapid analyte measurement assay |
US9119582B2 (en) * | 2006-06-30 | 2015-09-01 | Abbott Diabetes Care, Inc. | Integrated analyte sensor and infusion device and methods therefor |
US20090105571A1 (en) * | 2006-06-30 | 2009-04-23 | Abbott Diabetes Care, Inc. | Method and System for Providing Data Communication in Data Management Systems |
GB0613500D0 (en) * | 2006-07-07 | 2006-08-16 | Lectus Therapeutics Ltd | Apparatus and Methods |
WO2008082694A2 (en) * | 2006-07-14 | 2008-07-10 | Akermin, Inc. | Organelles in bioanodes, biocathodes, and biofuel cells |
CA2654981C (en) * | 2006-07-25 | 2016-05-17 | General Atomics | Methods for assaying percentage of glycated hemoglobin |
US7943385B2 (en) | 2006-07-25 | 2011-05-17 | General Atomics | Methods for assaying percentage of glycated hemoglobin |
US20110054391A1 (en) * | 2006-07-28 | 2011-03-03 | Ward W Kenneth | Analyte sensing and response system |
US8932216B2 (en) | 2006-08-07 | 2015-01-13 | Abbott Diabetes Care Inc. | Method and system for providing data management in integrated analyte monitoring and infusion system |
US8206296B2 (en) | 2006-08-07 | 2012-06-26 | Abbott Diabetes Care Inc. | Method and system for providing integrated analyte monitoring and infusion system therapy management |
GB0616566D0 (en) * | 2006-08-19 | 2006-09-27 | Rolls Royce Plc | An alloy and method of treating titanium aluminide |
ATE416526T1 (en) * | 2006-08-25 | 2008-12-15 | Alcatel Lucent | DIGITAL SIGNAL RECEIVER WITH Q-FACTOR MONITORING |
US20080076836A1 (en) * | 2006-09-01 | 2008-03-27 | Cardiac Pacemakers, Inc | Method and apparatus for using light to enhance cell growth and survival |
GB0617276D0 (en) * | 2006-09-04 | 2006-10-11 | Suresensors | Device |
US20100298764A1 (en) * | 2006-09-06 | 2010-11-25 | Ofer Yodfat | Fluid delivery system with optical sensing of analyte concentration levels |
WO2008038274A1 (en) | 2006-09-29 | 2008-04-03 | Medingo Ltd. | Fluid delivery system with electrochemical sensing of analyte concentration levels |
US7831287B2 (en) * | 2006-10-04 | 2010-11-09 | Dexcom, Inc. | Dual electrode system for a continuous analyte sensor |
EP2767826B2 (en) | 2006-10-04 | 2020-11-11 | Dexcom, Inc. | Dual electrode system for a continuous analyte sensor |
US8790819B1 (en) | 2006-10-06 | 2014-07-29 | Greatbatch Ltd. | Implantable medical assembly |
WO2008052199A2 (en) | 2006-10-26 | 2008-05-02 | Abbott Diabetes Care, Inc. | Method, system and computer program product for real-time detection of sensitivity decline in analyte sensors |
US7740580B2 (en) * | 2006-10-31 | 2010-06-22 | Abbott Diabetes Care Inc. | Analyte monitoring |
US20080119702A1 (en) * | 2006-10-31 | 2008-05-22 | Abbott Diabetes Care, Inc. | Analyte meter having alert, alarm and test reminder capabilities and methods of use |
US8579853B2 (en) | 2006-10-31 | 2013-11-12 | Abbott Diabetes Care Inc. | Infusion devices and methods |
US20080119710A1 (en) * | 2006-10-31 | 2008-05-22 | Abbott Diabetes Care, Inc. | Medical devices and methods of using the same |
US8158081B2 (en) * | 2006-10-31 | 2012-04-17 | Abbott Diabetes Care Inc. | Analyte monitoring devices |
US20110039164A1 (en) * | 2006-11-06 | 2011-02-17 | Akermin, Inc. | Bioanode and biocathode stack assemblies |
WO2008150280A1 (en) * | 2006-11-30 | 2008-12-11 | Abbott Diabetes Care Inc. | Lyotropic liquid crystal coated analyte monitoring device and methods of use |
US20080139910A1 (en) * | 2006-12-06 | 2008-06-12 | Metronic Minimed, Inc. | Analyte sensor and method of using the same |
JP5257620B2 (en) * | 2006-12-26 | 2013-08-07 | アボツト・ダイアビーテイス・ケア・インコーポレイテツド | Specimen measuring device protection apparatus and method |
US20080214912A1 (en) * | 2007-01-10 | 2008-09-04 | Glucose Sensing Technologies, Llc | Blood Glucose Monitoring System And Method |
US20080177166A1 (en) * | 2007-01-18 | 2008-07-24 | Provex Technologies, Llc | Ultrasensitive amperometric saliva glucose sensor strip |
US10154804B2 (en) | 2007-01-31 | 2018-12-18 | Medtronic Minimed, Inc. | Model predictive method and system for controlling and supervising insulin infusion |
US8808515B2 (en) * | 2007-01-31 | 2014-08-19 | Abbott Diabetes Care Inc. | Heterocyclic nitrogen containing polymers coated analyte monitoring device and methods of use |
US20080199894A1 (en) | 2007-02-15 | 2008-08-21 | Abbott Diabetes Care, Inc. | Device and method for automatic data acquisition and/or detection |
US8121857B2 (en) * | 2007-02-15 | 2012-02-21 | Abbott Diabetes Care Inc. | Device and method for automatic data acquisition and/or detection |
AU2008230832A1 (en) | 2007-03-26 | 2008-10-02 | Dexcom, Inc. | Analyte sensor |
EP2142096B1 (en) * | 2007-04-04 | 2013-01-09 | Isense Corporation | Analyte sensing device having a plurality of sensing electrodes |
WO2008130898A1 (en) | 2007-04-14 | 2008-10-30 | Abbott Diabetes Care, Inc. | Method and apparatus for providing data processing and control in medical communication system |
WO2008130896A1 (en) * | 2007-04-14 | 2008-10-30 | Abbott Diabetes Care, Inc. | Method and apparatus for providing data processing and control in medical communication system |
WO2009096992A1 (en) * | 2007-04-14 | 2009-08-06 | Abbott Diabetes Care, Inc. | Method and apparatus for providing data processing and control in medical communication system |
CA2683721C (en) | 2007-04-14 | 2017-05-23 | Abbott Diabetes Care Inc. | Method and apparatus for providing dynamic multi-stage signal amplification in a medical device |
WO2008130897A2 (en) | 2007-04-14 | 2008-10-30 | Abbott Diabetes Care, Inc. | Method and apparatus for providing data processing and control in medical communication system |
CA2683930A1 (en) | 2007-04-14 | 2008-10-23 | Abbott Diabetes Care Inc. | Method and apparatus for providing data processing and control in medical communication system |
US20080269714A1 (en) | 2007-04-25 | 2008-10-30 | Medtronic Minimed, Inc. | Closed loop/semi-closed loop therapy modification system |
US20080269723A1 (en) * | 2007-04-25 | 2008-10-30 | Medtronic Minimed, Inc. | Closed loop/semi-closed loop therapy modification system |
US8080385B2 (en) | 2007-05-03 | 2011-12-20 | Abbott Diabetes Care Inc. | Crosslinked adduct of polyaniline and polymer acid containing redox enzyme for electrochemical sensor |
US20080281179A1 (en) * | 2007-05-08 | 2008-11-13 | Abbott Diabetes Care, Inc. | Analyte monitoring system and methods |
US8103471B2 (en) | 2007-05-14 | 2012-01-24 | Abbott Diabetes Care Inc. | Method and apparatus for providing data processing and control in a medical communication system |
US8239166B2 (en) | 2007-05-14 | 2012-08-07 | Abbott Diabetes Care Inc. | Method and apparatus for providing data processing and control in a medical communication system |
US8560038B2 (en) * | 2007-05-14 | 2013-10-15 | Abbott Diabetes Care Inc. | Method and apparatus for providing data processing and control in a medical communication system |
US7996158B2 (en) | 2007-05-14 | 2011-08-09 | Abbott Diabetes Care Inc. | Method and apparatus for providing data processing and control in a medical communication system |
US20080312845A1 (en) * | 2007-05-14 | 2008-12-18 | Abbott Diabetes Care, Inc. | Method and apparatus for providing data processing and control in a medical communication system |
US8260558B2 (en) | 2007-05-14 | 2012-09-04 | Abbott Diabetes Care Inc. | Method and apparatus for providing data processing and control in a medical communication system |
US8600681B2 (en) * | 2007-05-14 | 2013-12-03 | Abbott Diabetes Care Inc. | Method and apparatus for providing data processing and control in a medical communication system |
US8444560B2 (en) * | 2007-05-14 | 2013-05-21 | Abbott Diabetes Care Inc. | Method and apparatus for providing data processing and control in a medical communication system |
US9125548B2 (en) | 2007-05-14 | 2015-09-08 | Abbott Diabetes Care Inc. | Method and apparatus for providing data processing and control in a medical communication system |
US10002233B2 (en) * | 2007-05-14 | 2018-06-19 | Abbott Diabetes Care Inc. | Method and apparatus for providing data processing and control in a medical communication system |
WO2008150917A1 (en) | 2007-05-31 | 2008-12-11 | Abbott Diabetes Care, Inc. | Insertion devices and methods |
US20080300572A1 (en) * | 2007-06-01 | 2008-12-04 | Medtronic Minimed, Inc. | Wireless monitor for a personal medical device system |
EP2157907B1 (en) | 2007-06-07 | 2013-03-27 | MicroCHIPS, Inc. | Electrochemical biosensors and arrays |
WO2008157819A1 (en) * | 2007-06-21 | 2008-12-24 | Abbott Diabetes Care, Inc. | Health management devices and methods |
US8597188B2 (en) | 2007-06-21 | 2013-12-03 | Abbott Diabetes Care Inc. | Health management devices and methods |
AU2008265542B2 (en) | 2007-06-21 | 2014-07-24 | Abbott Diabetes Care Inc. | Health monitor |
US8641618B2 (en) * | 2007-06-27 | 2014-02-04 | Abbott Diabetes Care Inc. | Method and structure for securing a monitoring device element |
US8085151B2 (en) * | 2007-06-28 | 2011-12-27 | Abbott Diabetes Care Inc. | Signal converting cradle for medical condition monitoring and management system |
US8160900B2 (en) | 2007-06-29 | 2012-04-17 | Abbott Diabetes Care Inc. | Analyte monitoring and management device and method to analyze the frequency of user interaction with the device |
EP2017350A1 (en) * | 2007-07-19 | 2009-01-21 | F. Hoffmann-La Roche AG | Electrochemical sensor with covalent-bound enzyme |
US8834366B2 (en) | 2007-07-31 | 2014-09-16 | Abbott Diabetes Care Inc. | Method and apparatus for providing analyte sensor calibration |
US20090036760A1 (en) * | 2007-07-31 | 2009-02-05 | Abbott Diabetes Care, Inc. | Method and apparatus for providing data processing and control in a medical communication system |
US7768386B2 (en) * | 2007-07-31 | 2010-08-03 | Abbott Diabetes Care Inc. | Method and apparatus for providing data processing and control in a medical communication system |
US20090038004A1 (en) * | 2007-07-31 | 2009-02-05 | Gabor Blasko | Role change based on coupling or docking of information handling apparatus and method for same |
US20090043183A1 (en) * | 2007-08-08 | 2009-02-12 | Lifescan, Inc. | Integrated stent and blood analyte monitoring system |
US7747302B2 (en) * | 2007-08-08 | 2010-06-29 | Lifescan, Inc. | Method for integrating facilitated blood flow and blood analyte monitoring |
US20120046533A1 (en) | 2007-08-29 | 2012-02-23 | Medtronic Minimed, Inc. | Combined sensor and infusion sets |
US9968742B2 (en) | 2007-08-29 | 2018-05-15 | Medtronic Minimed, Inc. | Combined sensor and infusion set using separated sites |
US8702932B2 (en) | 2007-08-30 | 2014-04-22 | Pepex Biomedical, Inc. | Electrochemical sensor and method for manufacturing |
WO2009051901A2 (en) * | 2007-08-30 | 2009-04-23 | Pepex Biomedical, Llc | Electrochemical sensor and method for manufacturing |
US11307201B2 (en) * | 2007-09-17 | 2022-04-19 | Red Ivory Llc | Self-actuating signal producing detection devices and methods |
US8163146B2 (en) | 2007-10-12 | 2012-04-24 | Abbott Diabetes Care Inc. | Mediator stabilized reagent compositions for use in biosensor electrodes |
US8377031B2 (en) | 2007-10-23 | 2013-02-19 | Abbott Diabetes Care Inc. | Closed loop control system with safety parameters and methods |
US8409093B2 (en) * | 2007-10-23 | 2013-04-02 | Abbott Diabetes Care Inc. | Assessing measures of glycemic variability |
US8216138B1 (en) | 2007-10-23 | 2012-07-10 | Abbott Diabetes Care Inc. | Correlation of alternative site blood and interstitial fluid glucose concentrations to venous glucose concentration |
US8000918B2 (en) | 2007-10-23 | 2011-08-16 | Edwards Lifesciences Corporation | Monitoring and compensating for temperature-related error in an electrochemical sensor |
US8417312B2 (en) | 2007-10-25 | 2013-04-09 | Dexcom, Inc. | Systems and methods for processing sensor data |
AU2008316630A1 (en) | 2007-10-25 | 2009-04-30 | Dexcom, Inc. | Systems and methods for processing sensor data |
US20090112626A1 (en) * | 2007-10-30 | 2009-04-30 | Cary Talbot | Remote wireless monitoring, processing, and communication of patient data |
US7783442B2 (en) * | 2007-10-31 | 2010-08-24 | Medtronic Minimed, Inc. | System and methods for calibrating physiological characteristic sensors |
AU2008327483A1 (en) | 2007-11-21 | 2009-05-28 | Medingo Ltd. | Analyte monitoring and fluid dispensing system |
WO2009066287A2 (en) | 2007-11-21 | 2009-05-28 | Medingo Ltd. | Hypodermic optical monitoring of bodily analyte |
US20090188811A1 (en) | 2007-11-28 | 2009-07-30 | Edwards Lifesciences Corporation | Preparation and maintenance of sensors |
WO2009076302A1 (en) | 2007-12-10 | 2009-06-18 | Bayer Healthcare Llc | Control markers for auto-detection of control solution and methods of use |
US8290559B2 (en) | 2007-12-17 | 2012-10-16 | Dexcom, Inc. | Systems and methods for processing sensor data |
US20090164251A1 (en) * | 2007-12-19 | 2009-06-25 | Abbott Diabetes Care, Inc. | Method and apparatus for providing treatment profile management |
US20090164239A1 (en) * | 2007-12-19 | 2009-06-25 | Abbott Diabetes Care, Inc. | Dynamic Display Of Glucose Information |
US8313467B2 (en) | 2007-12-27 | 2012-11-20 | Medtronic Minimed, Inc. | Reservoir pressure equalization systems and methods |
US8986253B2 (en) | 2008-01-25 | 2015-03-24 | Tandem Diabetes Care, Inc. | Two chamber pumps and related methods |
US8431011B2 (en) | 2008-01-31 | 2013-04-30 | Abbott Diabetes Care Inc. | Method for automatically and rapidly distinguishing between control and sample solutions in a biosensor strip |
JP2011511665A (en) | 2008-02-04 | 2011-04-14 | バイエル・ヘルスケア・エルエルシー | Analyte sensor and method using semiconductors |
GB2457660A (en) * | 2008-02-19 | 2009-08-26 | Sphere Medical Ltd | Methods of calibrating a sensor in a patient monitoring system |
CA2715628A1 (en) | 2008-02-21 | 2009-08-27 | Dexcom, Inc. | Systems and methods for processing, transmitting and displaying sensor data |
WO2009108836A1 (en) * | 2008-02-29 | 2009-09-03 | Path Scientific, Llc | Unitized painfree blood glucose measuring device |
JP5581310B2 (en) * | 2008-03-17 | 2014-08-27 | アイセンス コーポレーション | Analyte sensor subassembly |
US20090240121A1 (en) * | 2008-03-21 | 2009-09-24 | Nova Biomedical Corporation | Intravascular sensor and insertion set combination |
US20090275815A1 (en) * | 2008-03-21 | 2009-11-05 | Nova Biomedical Corporation | Temperature-compensated in-vivo sensor |
US20090242399A1 (en) * | 2008-03-25 | 2009-10-01 | Dexcom, Inc. | Analyte sensor |
US20090247856A1 (en) | 2008-03-28 | 2009-10-01 | Dexcom, Inc. | Polymer membranes for continuous analyte sensors |
US20090259118A1 (en) * | 2008-03-31 | 2009-10-15 | Abbott Diabetes Care Inc. | Shallow Implantable Analyte Sensor with Rapid Physiological Response |
EP2106784B1 (en) * | 2008-04-03 | 2015-04-22 | Rohm and Haas Company | Hair styling composition |
EP3659628A1 (en) | 2008-04-10 | 2020-06-03 | Abbott Diabetes Care, Inc. | Method and system for sterilizing an analyte sensor |
WO2009126900A1 (en) | 2008-04-11 | 2009-10-15 | Pelikan Technologies, Inc. | Method and apparatus for analyte detecting device |
US8262874B2 (en) * | 2008-04-14 | 2012-09-11 | Abbott Diabetes Care Inc. | Biosensor coating composition and methods thereof |
WO2009140343A1 (en) * | 2008-05-13 | 2009-11-19 | General Atomics | Electrochemical biosensor for direct determination of percentage of glycated hemoglobin |
US9295786B2 (en) | 2008-05-28 | 2016-03-29 | Medtronic Minimed, Inc. | Needle protective device for subcutaneous sensors |
US8591410B2 (en) | 2008-05-30 | 2013-11-26 | Abbott Diabetes Care Inc. | Method and apparatus for providing glycemic control |
CA2725264C (en) | 2008-05-30 | 2017-06-20 | Intuity Medical, Inc. | Body fluid sampling device -- sampling site interface |
US7826382B2 (en) | 2008-05-30 | 2010-11-02 | Abbott Diabetes Care Inc. | Close proximity communication device and methods |
US8924159B2 (en) | 2008-05-30 | 2014-12-30 | Abbott Diabetes Care Inc. | Method and apparatus for providing glycemic control |
US20090300616A1 (en) * | 2008-05-30 | 2009-12-03 | Abbott Diabetes Care, Inc. | Automated task execution for an analyte monitoring system |
US8280474B2 (en) | 2008-06-02 | 2012-10-02 | Abbott Diabetes Care Inc. | Reference electrodes having an extended lifetime for use in long term amperometric sensors |
US8155722B2 (en) * | 2008-06-02 | 2012-04-10 | Abbott Diabetes Care Inc. | Reference electrodes having an extended lifetime for use in long term amperometric sensors |
US20090294307A1 (en) * | 2008-06-02 | 2009-12-03 | Zenghe Liu | Redox polymer based reference electrodes having an extended lifetime for use in long term amperometric sensors |
US8620398B2 (en) * | 2008-06-02 | 2013-12-31 | Abbott Diabetes Care Inc. | Reference electrodes having an extended lifetime for use in long term amperometric sensors |
EP2299904B1 (en) | 2008-06-06 | 2019-09-11 | Intuity Medical, Inc. | Medical measurement method |
US9636051B2 (en) | 2008-06-06 | 2017-05-02 | Intuity Medical, Inc. | Detection meter and mode of operation |
JP5405916B2 (en) * | 2008-06-24 | 2014-02-05 | パナソニック株式会社 | Biosensor, method for manufacturing the same, and detection system including the same |
WO2010009172A1 (en) | 2008-07-14 | 2010-01-21 | Abbott Diabetes Care Inc. | Closed loop control system interface and methods |
US7896703B2 (en) * | 2008-07-17 | 2011-03-01 | Abbott Diabetes Care Inc. | Strip connectors for measurement devices |
EP2149957B1 (en) * | 2008-07-30 | 2017-06-14 | Harman Becker Automotive Systems GmbH | Priority based power distribution arrangement |
US8700114B2 (en) * | 2008-07-31 | 2014-04-15 | Medtronic Minmed, Inc. | Analyte sensor apparatuses comprising multiple implantable sensor elements and methods for making and using them |
US20100030052A1 (en) * | 2008-07-31 | 2010-02-04 | Bommakanti Balasubrahmanya S | Analyte sensors comprising plasticizers |
US9943644B2 (en) * | 2008-08-31 | 2018-04-17 | Abbott Diabetes Care Inc. | Closed loop control with reference measurement and methods thereof |
US8622988B2 (en) | 2008-08-31 | 2014-01-07 | Abbott Diabetes Care Inc. | Variable rate closed loop control and methods |
US20100057040A1 (en) * | 2008-08-31 | 2010-03-04 | Abbott Diabetes Care, Inc. | Robust Closed Loop Control And Methods |
US8734422B2 (en) | 2008-08-31 | 2014-05-27 | Abbott Diabetes Care Inc. | Closed loop control with improved alarm functions |
US8637194B2 (en) | 2008-09-02 | 2014-01-28 | Bio-Nano Power, Llc | Bio-nano power cells and their uses |
WO2010026570A2 (en) | 2008-09-02 | 2010-03-11 | Medingo Ltd. | Remote control for fluid dispensing device with a echargeable power source |
US8636884B2 (en) | 2008-09-15 | 2014-01-28 | Abbott Diabetes Care Inc. | Cationic polymer based wired enzyme formulations for use in analyte sensors |
US8408421B2 (en) | 2008-09-16 | 2013-04-02 | Tandem Diabetes Care, Inc. | Flow regulating stopcocks and related methods |
US8650937B2 (en) | 2008-09-19 | 2014-02-18 | Tandem Diabetes Care, Inc. | Solute concentration measurement device and related methods |
US9173597B2 (en) | 2008-09-19 | 2015-11-03 | Bayer Healthcare Llc | Analyte sensors, systems, testing apparatus and manufacturing methods |
CN102171557B (en) * | 2008-09-19 | 2016-10-19 | 安晟信医疗科技控股公司 | There is electrochemical appliance and the manufacture method thereof of the electro-chemical activity of enhancing |
US8986208B2 (en) | 2008-09-30 | 2015-03-24 | Abbott Diabetes Care Inc. | Analyte sensor sensitivity attenuation mitigation |
US20100082364A1 (en) * | 2008-09-30 | 2010-04-01 | Abbott Diabetes Care, Inc. | Medical Information Management |
US8983568B2 (en) | 2008-09-30 | 2015-03-17 | Abbott Diabetes Care Inc. | Analyte sensors comprising leveling agents |
US8208973B2 (en) * | 2008-11-05 | 2012-06-26 | Medtronic Minimed, Inc. | System and method for variable beacon timing with wireless devices |
US9326707B2 (en) | 2008-11-10 | 2016-05-03 | Abbott Diabetes Care Inc. | Alarm characterization for analyte monitoring devices and systems |
EP2355705A4 (en) | 2008-11-11 | 2013-12-25 | Isense Corp | Long-term implantable biosensor |
WO2010056876A2 (en) | 2008-11-14 | 2010-05-20 | Pepex Biomedical, Llc | Manufacturing electrochemical sensor module |
US8951377B2 (en) | 2008-11-14 | 2015-02-10 | Pepex Biomedical, Inc. | Manufacturing electrochemical sensor module |
US9445755B2 (en) | 2008-11-14 | 2016-09-20 | Pepex Biomedical, Llc | Electrochemical sensor module |
US20100161346A1 (en) * | 2008-12-24 | 2010-06-24 | Kristen Getschmann | Systems and Methods for Providing Bolus Dosage Recommendations |
US20100160756A1 (en) * | 2008-12-24 | 2010-06-24 | Edwards Lifesciences Corporation | Membrane Layer for Electrochemical Biosensor and Method of Accommodating Electromagnetic and Radiofrequency Fields |
US20100160740A1 (en) * | 2008-12-24 | 2010-06-24 | Gary Cohen | Use of Patterns in a Therapy Management System |
US9330237B2 (en) * | 2008-12-24 | 2016-05-03 | Medtronic Minimed, Inc. | Pattern recognition and filtering in a therapy management system |
US20100187132A1 (en) * | 2008-12-29 | 2010-07-29 | Don Alden | Determination of the real electrochemical surface areas of screen printed electrodes |
US20100185517A1 (en) * | 2009-01-21 | 2010-07-22 | Yahoo! Inc. | User interface for interest-based targeted marketing |
US9375169B2 (en) * | 2009-01-30 | 2016-06-28 | Sanofi-Aventis Deutschland Gmbh | Cam drive for managing disposable penetrating member actions with a single motor and motor and control system |
US20100198196A1 (en) * | 2009-01-30 | 2010-08-05 | Abbott Diabetes Care, Inc. | Therapy Delivery Device Programming Tool |
US8560082B2 (en) | 2009-01-30 | 2013-10-15 | Abbott Diabetes Care Inc. | Computerized determination of insulin pump therapy parameters using real time and retrospective data processing |
US9402544B2 (en) | 2009-02-03 | 2016-08-02 | Abbott Diabetes Care Inc. | Analyte sensor and apparatus for insertion of the sensor |
WO2011034629A1 (en) * | 2009-02-05 | 2011-03-24 | Abbott Diabetes Care Inc. | Devices and methods for metering insoluble active agent particles |
WO2010090271A1 (en) | 2009-02-09 | 2010-08-12 | アークレイ株式会社 | Electrochemical sensor and method for manufacturing same |
WO2010099122A1 (en) * | 2009-02-24 | 2010-09-02 | Ultradian Diagnostics, Llc | Microsecond response electrochemical sensors and methods thereof |
EP4252639A3 (en) | 2009-02-26 | 2024-01-03 | Abbott Diabetes Care Inc. | Method of calibrating an analyte sensor |
US20100213057A1 (en) | 2009-02-26 | 2010-08-26 | Benjamin Feldman | Self-Powered Analyte Sensor |
WO2010106781A1 (en) | 2009-03-16 | 2010-09-23 | Arkray, Inc. | Method of continuously measuring substrate concentration |
EP2410910A4 (en) | 2009-03-27 | 2014-10-15 | Dexcom Inc | Methods and systems for promoting glucose management |
WO2010114942A1 (en) * | 2009-03-31 | 2010-10-07 | Abbott Diabetes Care Inc. | Precise fluid dispensing method and device |
US8497777B2 (en) | 2009-04-15 | 2013-07-30 | Abbott Diabetes Care Inc. | Analyte monitoring system having an alert |
WO2010121229A1 (en) | 2009-04-16 | 2010-10-21 | Abbott Diabetes Care Inc. | Analyte sensor calibration management |
WO2010123521A1 (en) | 2009-04-21 | 2010-10-28 | The Trustees Of Columbia University In The City Of New York | Sensors for long-term and continuous monitoring of biochemicals |
US8758583B2 (en) | 2009-04-28 | 2014-06-24 | Abbott Diabetes Care Inc. | Smart sensor ports and methods of using same |
US8467972B2 (en) * | 2009-04-28 | 2013-06-18 | Abbott Diabetes Care Inc. | Closed loop blood glucose control algorithm analysis |
US20100274515A1 (en) * | 2009-04-28 | 2010-10-28 | Abbott Diabetes Care Inc. | Dynamic Analyte Sensor Calibration Based On Sensor Stability Profile |
US8359081B2 (en) | 2009-04-28 | 2013-01-22 | Abbott Diabetes Care Inc. | Service-detectable analyte sensors and methods of using and making same |
EP2424426B1 (en) | 2009-04-29 | 2020-01-08 | Abbott Diabetes Care, Inc. | Method and system for providing data communication in continuous glucose monitoring and management system |
EP2425209A4 (en) | 2009-04-29 | 2013-01-09 | Abbott Diabetes Care Inc | Method and system for providing real time analyte sensor calibration with retrospective backfill |
US20100278738A1 (en) * | 2009-05-04 | 2010-11-04 | Sitzman Thomas J | Method to detect and monitor ischemia in transplanted organs and tissues |
US8236254B2 (en) * | 2009-05-14 | 2012-08-07 | Abbott Diabetes Care Inc. | Cap-linked test strip carrier for vial augmentation |
WO2010138817A1 (en) | 2009-05-29 | 2010-12-02 | Abbott Diabetes Care Inc. | Glucose monitoring system with wireless communications |
EP2438527B1 (en) | 2009-06-04 | 2018-05-02 | Abbott Diabetes Care, Inc. | Method and system for updating a medical device |
US10376213B2 (en) * | 2009-06-30 | 2019-08-13 | Waveform Technologies, Inc. | System, method and apparatus for sensor insertion |
US8613892B2 (en) | 2009-06-30 | 2013-12-24 | Abbott Diabetes Care Inc. | Analyte meter with a moveable head and methods of using the same |
US8437827B2 (en) * | 2009-06-30 | 2013-05-07 | Abbott Diabetes Care Inc. | Extruded analyte sensors and methods of using same |
US8298158B2 (en) * | 2009-06-30 | 2012-10-30 | Abbott Diabetes Care Inc. | Integrated devices having extruded electrode structures and methods of using same |
BR122012017389B8 (en) * | 2009-07-01 | 2021-06-22 | Fresenius Medical Care Holdings Inc | drug delivery device |
FR2947634B1 (en) * | 2009-07-06 | 2012-07-27 | Otv Sa | DEVICE FOR MEASURING AT LEAST ONE PROPERTY OF WATER |
US20110009813A1 (en) * | 2009-07-09 | 2011-01-13 | Medtronic Minimed, Inc. | Panning a display of a portable medical device |
US20110006880A1 (en) * | 2009-07-09 | 2011-01-13 | Medtronic Minimed, Inc. | Fingerprint-linked control of a portable medical device |
US8344847B2 (en) | 2009-07-09 | 2013-01-01 | Medtronic Minimed, Inc. | Coordination of control commands in a medical device system having at least one therapy delivery device and at least one wireless controller device |
EP3173014B1 (en) | 2009-07-23 | 2021-08-18 | Abbott Diabetes Care, Inc. | Real time management of data relating to physiological control of glucose levels |
EP4309580A3 (en) | 2009-07-23 | 2024-02-28 | Abbott Diabetes Care Inc. | Continuous analyte measurement system |
EP2724739B1 (en) | 2009-07-30 | 2015-07-01 | Tandem Diabetes Care, Inc. | Portable infusion pump system |
US20110023878A1 (en) * | 2009-07-31 | 2011-02-03 | Nellcor Puritan Bennett Llc | Method And System For Delivering A Single-Breath, Low Flow Recruitment Maneuver |
BR112012002655A2 (en) | 2009-08-08 | 2016-03-22 | Sanofi Aventis Deutschland | implantable sensor device and medical delivery device connectable to such sensor device |
US9125603B2 (en) * | 2009-08-11 | 2015-09-08 | Abbott Diabetes Care Inc. | Analyte sensor ports |
US20110046466A1 (en) * | 2009-08-19 | 2011-02-24 | Feldman Benjamin J | Analyte Sensors Including Nanomaterials and Methods of Using Same |
US20110106126A1 (en) * | 2009-08-31 | 2011-05-05 | Michael Love | Inserter device including rotor subassembly |
WO2011026053A1 (en) | 2009-08-31 | 2011-03-03 | Abbott Diabetes Care Inc. | Displays for a medical device |
US8357276B2 (en) | 2009-08-31 | 2013-01-22 | Abbott Diabetes Care Inc. | Small volume test strips with large sample fill ports, supported test strips, and methods of making and using same |
BR112012000220A2 (en) | 2009-08-31 | 2020-12-22 | Abbott Diabetes Care Inc. | METHODS AND MEDICAL DEVICES |
US8487758B2 (en) * | 2009-09-02 | 2013-07-16 | Medtronic Minimed, Inc. | Medical device having an intelligent alerting scheme, and related operating methods |
WO2011034917A2 (en) | 2009-09-15 | 2011-03-24 | Agamatrix, Inc. | Implantable electrochemical biosensor system and method |
CA2774098A1 (en) * | 2009-09-22 | 2011-03-31 | Vision Quest Industries Incorporated D/B/A Vq Orthocare | Durable electrode construction for an orthotic device |
WO2011041449A1 (en) * | 2009-09-29 | 2011-04-07 | Abbott Diabetes Care Inc. | Sensor inserter having introducer |
WO2011041531A1 (en) | 2009-09-30 | 2011-04-07 | Abbott Diabetes Care Inc. | Interconnect for on-body analyte monitoring device |
US20110082356A1 (en) | 2009-10-01 | 2011-04-07 | Medtronic Minimed, Inc. | Analyte sensor apparatuses having interference rejection membranes and methods for making and using them |
US20110082484A1 (en) * | 2009-10-07 | 2011-04-07 | Heber Saravia | Sensor inserter assembly having rotatable trigger |
US8741591B2 (en) * | 2009-10-09 | 2014-06-03 | The Research Foundation For The State University Of New York | pH-insensitive glucose indicator protein |
US8185181B2 (en) | 2009-10-30 | 2012-05-22 | Abbott Diabetes Care Inc. | Method and apparatus for detecting false hypoglycemic conditions |
US8386042B2 (en) * | 2009-11-03 | 2013-02-26 | Medtronic Minimed, Inc. | Omnidirectional accelerometer device and medical device incorporating same |
US20120265556A1 (en) * | 2009-11-17 | 2012-10-18 | Shamir Lebovitz | Method and device for remote controlled application of medical monitoring and attention |
US20110288388A1 (en) | 2009-11-20 | 2011-11-24 | Medtronic Minimed, Inc. | Multi-conductor lead configurations useful with medical device systems and methods for making and using them |
US9042954B2 (en) | 2009-11-24 | 2015-05-26 | Abbott Diabetes Care Inc. | Analyte sensors comprising hydrogel membranes |
US8354013B2 (en) | 2009-11-24 | 2013-01-15 | Abbott Diabetes Care Inc. | Analyte sensors comprising high-boiling point solvents |
US20110124993A1 (en) * | 2009-11-24 | 2011-05-26 | Abbott Diabetes Care Inc. | Analyte Sensors Comprising Self-Polymerizing Hydrogels |
DK2506914T3 (en) | 2009-11-30 | 2018-12-10 | Hoffmann La Roche | ANALYSIS MONITORING AND FLUID SUBMISSION SYSTEM |
WO2011065981A1 (en) | 2009-11-30 | 2011-06-03 | Intuity Medical, Inc. | Calibration material delivery devices and methods |
US9354226B2 (en) | 2009-12-17 | 2016-05-31 | Ascensia Diabetes Care Holdings Ag | Transdermal systems, devices, and methods to optically analyze an analyte |
US8660628B2 (en) * | 2009-12-21 | 2014-02-25 | Medtronic Minimed, Inc. | Analyte sensors comprising blended membrane compositions and methods for making and using them |
US8574201B2 (en) | 2009-12-22 | 2013-11-05 | Medtronic Minimed, Inc. | Syringe piston with check valve seal |
US8755269B2 (en) * | 2009-12-23 | 2014-06-17 | Medtronic Minimed, Inc. | Ranking and switching of wireless channels in a body area network of medical devices |
US20110152970A1 (en) * | 2009-12-23 | 2011-06-23 | Medtronic Minimed, Inc. | Location-based ranking and switching of wireless channels in a body area network of medical devices |
US8803688B2 (en) * | 2010-01-07 | 2014-08-12 | Lisa Halff | System and method responsive to an event detected at a glucose monitoring device |
US20110163880A1 (en) * | 2010-01-07 | 2011-07-07 | Lisa Halff | System and method responsive to an alarm event detected at an insulin delivery device |
US8828330B2 (en) * | 2010-01-28 | 2014-09-09 | Abbott Diabetes Care Inc. | Universal test strip port |
US20110184258A1 (en) * | 2010-01-28 | 2011-07-28 | Abbott Diabetes Care Inc. | Balloon Catheter Analyte Measurement Sensors and Methods for Using the Same |
USD924406S1 (en) | 2010-02-01 | 2021-07-06 | Abbott Diabetes Care Inc. | Analyte sensor inserter |
US20130123594A1 (en) * | 2010-03-09 | 2013-05-16 | Arkray, Inc. | Electrochemical Sensor |
WO2011112753A1 (en) | 2010-03-10 | 2011-09-15 | Abbott Diabetes Care Inc. | Systems, devices and methods for managing glucose levels |
US10448872B2 (en) | 2010-03-16 | 2019-10-22 | Medtronic Minimed, Inc. | Analyte sensor apparatuses having improved electrode configurations and methods for making and using them |
LT3766408T (en) | 2010-03-24 | 2022-07-11 | Abbott Diabetes Care, Inc. | Medical device inserters |
US9320432B2 (en) | 2010-04-16 | 2016-04-26 | Abbott Diabetes Care Inc. | Analyte meter communication module |
US8965476B2 (en) | 2010-04-16 | 2015-02-24 | Sanofi-Aventis Deutschland Gmbh | Tissue penetration device |
AU2011239548A1 (en) | 2010-04-16 | 2012-01-19 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods |
JP5753720B2 (en) * | 2010-04-22 | 2015-07-22 | アークレイ株式会社 | Biosensor |
US9198623B2 (en) | 2010-04-22 | 2015-12-01 | Abbott Diabetes Care Inc. | Devices, systems, and methods related to analyte monitoring and management |
WO2011149857A1 (en) | 2010-05-24 | 2011-12-01 | Abbott Diabetes Care Inc. | Method and system for updating a medical device |
US8636711B2 (en) | 2010-06-14 | 2014-01-28 | Legacy Emanuel Hospital & Health Center | Stabilized glucagon solutions and uses therefor |
US9215995B2 (en) | 2010-06-23 | 2015-12-22 | Medtronic Minimed, Inc. | Sensor systems having multiple probes and electrode arrays |
US8635046B2 (en) | 2010-06-23 | 2014-01-21 | Abbott Diabetes Care Inc. | Method and system for evaluating analyte sensor response characteristics |
US10330667B2 (en) | 2010-06-25 | 2019-06-25 | Intuity Medical, Inc. | Analyte monitoring methods and systems |
US11064921B2 (en) | 2010-06-29 | 2021-07-20 | Abbott Diabetes Care Inc. | Devices, systems and methods for on-skin or on-body mounting of medical devices |
US10092229B2 (en) | 2010-06-29 | 2018-10-09 | Abbott Diabetes Care Inc. | Calibration of analyte measurement system |
WO2012015941A1 (en) | 2010-07-28 | 2012-02-02 | Abbott Diabetes Care Inc. | Analyte sensors having temperature independent membranes |
EP2624745A4 (en) * | 2010-10-07 | 2018-05-23 | Abbott Diabetes Care, Inc. | Analyte monitoring devices and methods |
US8603033B2 (en) | 2010-10-15 | 2013-12-10 | Medtronic Minimed, Inc. | Medical device and related assembly having an offset element for a piezoelectric speaker |
US8603032B2 (en) | 2010-10-15 | 2013-12-10 | Medtronic Minimed, Inc. | Medical device with membrane keypad sealing element, and related manufacturing method |
US8562565B2 (en) | 2010-10-15 | 2013-10-22 | Medtronic Minimed, Inc. | Battery shock absorber for a portable medical device |
US8479595B2 (en) | 2010-10-20 | 2013-07-09 | Medtronic Minimed, Inc. | Sensor assembly and medical device incorporating same |
US8495918B2 (en) | 2010-10-20 | 2013-07-30 | Medtronic Minimed, Inc. | Sensor assembly and medical device incorporating same |
US8474332B2 (en) | 2010-10-20 | 2013-07-02 | Medtronic Minimed, Inc. | Sensor assembly and medical device incorporating same |
EP2633310A4 (en) | 2010-10-26 | 2016-02-24 | Abbott Diabetes Care Inc | Analyte measurement devices and systems, and components and methods related thereto |
EP2455748A1 (en) * | 2010-11-17 | 2012-05-23 | Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V. | Sensor device, in particular for substance sensing, measuring apparatus, and method of manufacturing the sensor device |
US8702928B2 (en) | 2010-11-22 | 2014-04-22 | Abbott Diabetes Care Inc. | Modular analyte measurement system with extendable strip port |
US9713440B2 (en) | 2010-12-08 | 2017-07-25 | Abbott Diabetes Care Inc. | Modular analyte measurement systems, modular components thereof and related methods |
EP3954781B1 (en) | 2010-12-09 | 2024-02-21 | Abbott Diabetes Care, Inc. | Analyte sensors with a sensing surface having small sensing spots |
US8628510B2 (en) | 2010-12-22 | 2014-01-14 | Medtronic Minimed, Inc. | Monitoring the operating health of a force sensor in a fluid infusion device |
US8690855B2 (en) * | 2010-12-22 | 2014-04-08 | Medtronic Minimed, Inc. | Fluid reservoir seating procedure for a fluid infusion device |
US8197444B1 (en) | 2010-12-22 | 2012-06-12 | Medtronic Minimed, Inc. | Monitoring the seating status of a fluid reservoir in a fluid infusion device |
US8589106B2 (en) * | 2010-12-22 | 2013-11-19 | Roche Diagnostics Operations, Inc. | Calibration of a handheld diabetes managing device that receives data from a continuous glucose monitor |
US8469942B2 (en) | 2010-12-22 | 2013-06-25 | Medtronic Minimed, Inc. | Occlusion detection for a fluid infusion device |
WO2012106174A1 (en) | 2011-01-31 | 2012-08-09 | Fresenius Medical Care Holdings, Inc. | Preventing over-delivery of drug |
JP5819183B2 (en) | 2011-02-03 | 2015-11-18 | アークレイ株式会社 | Analysis device, sensor inspection device, inspection method, and inspection program |
WO2012108984A1 (en) | 2011-02-08 | 2012-08-16 | Fresenius Medical Care Holdings, Inc. | Magnetic sensors and related systems and methods |
WO2012108938A1 (en) | 2011-02-11 | 2012-08-16 | Abbott Diabetes Care Inc. | Software applications residing on handheld analyte determining devices |
US20140088392A1 (en) | 2011-02-11 | 2014-03-27 | Abbott Diabetes Care Inc. | Feedback from Cloud or HCP to Payer or Patient via Meter or Cell Phone |
WO2012108936A1 (en) | 2011-02-11 | 2012-08-16 | Abbott Diabetes Care Inc. | Data synchronization between two or more analyte detecting devices in a database |
US9393399B2 (en) | 2011-02-22 | 2016-07-19 | Medtronic Minimed, Inc. | Sealing assembly for a fluid reservoir of a fluid infusion device |
US9463309B2 (en) | 2011-02-22 | 2016-10-11 | Medtronic Minimed, Inc. | Sealing assembly and structure for a fluid infusion device having a needled fluid reservoir |
US8900206B2 (en) | 2011-02-22 | 2014-12-02 | Medtronic Minimed, Inc. | Pressure vented fluid reservoir for a fluid infusion device |
US9283318B2 (en) | 2011-02-22 | 2016-03-15 | Medtronic Minimed, Inc. | Flanged sealing element and needle guide pin assembly for a fluid infusion device having a needled fluid reservoir |
US8614596B2 (en) | 2011-02-28 | 2013-12-24 | Medtronic Minimed, Inc. | Systems and methods for initializing a voltage bus and medical devices incorporating same |
EP3583901A3 (en) | 2011-02-28 | 2020-01-15 | Abbott Diabetes Care, Inc. | Devices, systems, and methods associated with analyte monitoring devices and devices incorporating the same |
US10136845B2 (en) | 2011-02-28 | 2018-11-27 | Abbott Diabetes Care Inc. | Devices, systems, and methods associated with analyte monitoring devices and devices incorporating the same |
US9101305B2 (en) | 2011-03-09 | 2015-08-11 | Medtronic Minimed, Inc. | Glucose sensor product and related manufacturing and packaging methods |
US10010273B2 (en) | 2011-03-10 | 2018-07-03 | Abbott Diabetes Care, Inc. | Multi-function analyte monitor device and methods of use |
US9018893B2 (en) | 2011-03-18 | 2015-04-28 | Medtronic Minimed, Inc. | Power control techniques for an electronic device |
US8564447B2 (en) | 2011-03-18 | 2013-10-22 | Medtronic Minimed, Inc. | Battery life indication techniques for an electronic device |
JP6046115B2 (en) * | 2011-04-18 | 2016-12-14 | ノビオセンス ビー.ブイ. | Biosensor |
EP2699175A4 (en) | 2011-04-20 | 2014-08-13 | Abbott Diabetes Care Inc | Analyte monitoring devices and methods |
US9008744B2 (en) | 2011-05-06 | 2015-04-14 | Medtronic Minimed, Inc. | Method and apparatus for continuous analyte monitoring |
US9585605B2 (en) | 2011-05-19 | 2017-03-07 | Pepex Biomedical, Inc. | Fluid management and patient monitoring system |
US9380965B2 (en) | 2011-05-20 | 2016-07-05 | Abbott Diabetes Care Inc. | Analyte sensors having a membrane with low temperature sensitivity |
US9504162B2 (en) | 2011-05-20 | 2016-11-22 | Pepex Biomedical, Inc. | Manufacturing electrochemical sensor modules |
EP2720612B1 (en) | 2011-06-16 | 2019-02-06 | Abbott Diabetes Care, Inc. | Temperature-compensated analyte monitoring devices, systems, and methods thereof |
AU2012271333B2 (en) | 2011-06-17 | 2016-05-19 | Abbott Diabetes Care Inc. | Connectors for making connections between analyte sensors and other devices |
WO2013003735A1 (en) | 2011-06-30 | 2013-01-03 | Abbott Diabetes Care Inc. | Methods for generating hybrid analyte level output, and devices and systems related thereto |
WO2013016664A2 (en) | 2011-07-27 | 2013-01-31 | Vision Quest Industries Incorporated Dba Vq Orthocare | Electrostimulation system |
WO2013019714A1 (en) | 2011-07-29 | 2013-02-07 | The Trustees Of Columbia University In The City Of New York | Mems affinity sensor for continuous monitoring of analytes |
JP6223337B2 (en) | 2011-08-03 | 2017-11-08 | インテュイティ メディカル インコーポレイテッド | Body fluid extraction measuring instrument |
WO2013049381A1 (en) | 2011-09-28 | 2013-04-04 | Abbott Diabetes Care Inc. | Methods for analyte monitoring management and analyte measurement data management, and articles of manufacture related thereto |
CA3101645A1 (en) | 2011-09-28 | 2013-04-04 | Abbott Diabetes Care, Inc. | Methods, devices and systems for analyte monitoring management |
US9662243B2 (en) | 2011-09-30 | 2017-05-30 | Zoll Circulation, Inc. | Heat exchange catheters with bi-directional fluid flow and their methods of manufacture and use |
USD680454S1 (en) | 2011-10-25 | 2013-04-23 | Abbott Diabetes Care Inc. | Analyte meter and strip port |
US9069536B2 (en) | 2011-10-31 | 2015-06-30 | Abbott Diabetes Care Inc. | Electronic devices having integrated reset systems and methods thereof |
WO2013066849A1 (en) | 2011-10-31 | 2013-05-10 | Abbott Diabetes Care Inc. | Model based variable risk false glucose threshold alarm prevention mechanism |
WO2013074702A1 (en) | 2011-11-15 | 2013-05-23 | Ashwin-Ushas Corporation, Inc. | Complimentary polymer electrochromic device |
US9317656B2 (en) | 2011-11-23 | 2016-04-19 | Abbott Diabetes Care Inc. | Compatibility mechanisms for devices in a continuous analyte monitoring system and methods thereof |
US8710993B2 (en) | 2011-11-23 | 2014-04-29 | Abbott Diabetes Care Inc. | Mitigating single point failure of devices in an analyte monitoring system and methods thereof |
WO2013078426A2 (en) | 2011-11-25 | 2013-05-30 | Abbott Diabetes Care Inc. | Analyte monitoring system and methods of use |
US8887911B2 (en) | 2011-12-09 | 2014-11-18 | Abbott Diabetes Care Inc. | Packages and kits for analyte monitoring devices, and methods related thereto |
FI4056105T3 (en) | 2011-12-11 | 2023-12-28 | Abbott Diabetes Care Inc | Analyte sensor devices |
US9610401B2 (en) | 2012-01-13 | 2017-04-04 | Medtronic Minimed, Inc. | Infusion set component with modular fluid channel element |
CA2806765C (en) | 2012-03-08 | 2020-09-22 | Isense Corporation | Method and apparatus for insertion of a sensor |
WO2013138369A1 (en) | 2012-03-16 | 2013-09-19 | Dexcom, Inc. | Systems and methods for processing analyte sensor data |
US8603027B2 (en) | 2012-03-20 | 2013-12-10 | Medtronic Minimed, Inc. | Occlusion detection using pulse-width modulation and medical device incorporating same |
US8523803B1 (en) | 2012-03-20 | 2013-09-03 | Medtronic Minimed, Inc. | Motor health monitoring and medical device incorporating same |
US8603026B2 (en) | 2012-03-20 | 2013-12-10 | Medtronic Minimed, Inc. | Dynamic pulse-width modulation motor control and medical device incorporating same |
EP2840958B1 (en) | 2012-04-24 | 2020-09-30 | Abbott Diabetes Care, Inc. | Methods of lag-compensation for analyte measurements |
US9144646B2 (en) | 2012-04-25 | 2015-09-29 | Fresenius Medical Care Holdings, Inc. | Vial spiking devices and related assemblies and methods |
US9180242B2 (en) | 2012-05-17 | 2015-11-10 | Tandem Diabetes Care, Inc. | Methods and devices for multiple fluid transfer |
US9493807B2 (en) | 2012-05-25 | 2016-11-15 | Medtronic Minimed, Inc. | Foldover sensors and methods for making and using them |
US20130338630A1 (en) | 2012-06-07 | 2013-12-19 | Medtronic Minimed, Inc. | Diabetes therapy management system for recommending adjustments to an insulin infusion device |
US9333292B2 (en) | 2012-06-26 | 2016-05-10 | Medtronic Minimed, Inc. | Mechanically actuated fluid infusion device |
US20140012115A1 (en) | 2012-07-03 | 2014-01-09 | Medtronic Minimed, Inc. | Plasma deposited adhesion promoter layers for use with analyte sensors |
US8808269B2 (en) | 2012-08-21 | 2014-08-19 | Medtronic Minimed, Inc. | Reservoir plunger position monitoring and medical device incorporating same |
US9364609B2 (en) | 2012-08-30 | 2016-06-14 | Medtronic Minimed, Inc. | Insulin on board compensation for a closed-loop insulin infusion system |
US9878096B2 (en) | 2012-08-30 | 2018-01-30 | Medtronic Minimed, Inc. | Generation of target glucose values for a closed-loop operating mode of an insulin infusion system |
US9662445B2 (en) | 2012-08-30 | 2017-05-30 | Medtronic Minimed, Inc. | Regulating entry into a closed-loop operating mode of an insulin infusion system |
US9849239B2 (en) | 2012-08-30 | 2017-12-26 | Medtronic Minimed, Inc. | Generation and application of an insulin limit for a closed-loop operating mode of an insulin infusion system |
US9623179B2 (en) | 2012-08-30 | 2017-04-18 | Medtronic Minimed, Inc. | Safeguarding techniques for a closed-loop insulin infusion system |
EP2890297B1 (en) | 2012-08-30 | 2018-04-11 | Abbott Diabetes Care, Inc. | Dropout detection in continuous analyte monitoring data during data excursions |
US10130767B2 (en) | 2012-08-30 | 2018-11-20 | Medtronic Minimed, Inc. | Sensor model supervisor for a closed-loop insulin infusion system |
US10496797B2 (en) | 2012-08-30 | 2019-12-03 | Medtronic Minimed, Inc. | Blood glucose validation for a closed-loop operating mode of an insulin infusion system |
US10004439B2 (en) | 2012-09-21 | 2018-06-26 | Abbott Diabetes Care Inc. | In vivo sensors having ceria nanoparticle electrodes |
EP2901153A4 (en) | 2012-09-26 | 2016-04-27 | Abbott Diabetes Care Inc | Method and apparatus for improving lag correction during in vivo measurement of analyte concentration with analyte concentration variability and range data |
US10108781B2 (en) | 2012-09-28 | 2018-10-23 | Abbott Diabetes Care Inc. | Glucose or ketone body analyte monitoring in vivo |
US9801756B2 (en) | 2012-09-28 | 2017-10-31 | Zoll Circulation, Inc. | Intravascular heat exchange catheter and system with RFID coupling |
US9433528B2 (en) | 2012-09-28 | 2016-09-06 | Zoll Circulation, Inc. | Intravascular heat exchange catheter with rib cage-like coolant path |
US9788765B2 (en) | 2012-09-28 | 2017-10-17 | Dexcom, Inc. | Zwitterion surface modifications for continuous sensors |
US8870818B2 (en) | 2012-11-15 | 2014-10-28 | Medtronic Minimed, Inc. | Systems and methods for alignment and detection of a consumable component |
US10466247B2 (en) | 2012-11-20 | 2019-11-05 | Becton, Dickinson And Company | System and method for diagnosing sensor performance using analyte-independent ratiometric signals |
WO2014085602A1 (en) | 2012-11-29 | 2014-06-05 | Abbott Diabetes Care Inc. | Methods, devices, and systems related to analyte monitoring |
US11224367B2 (en) | 2012-12-03 | 2022-01-18 | Pepex Biomedical, Inc. | Sensor module and method of using a sensor module |
US10194840B2 (en) | 2012-12-06 | 2019-02-05 | Medtronic Minimed, Inc. | Microarray electrodes useful with analyte sensors and methods for making and using them |
US9107994B2 (en) | 2013-01-18 | 2015-08-18 | Medtronic Minimed, Inc. | Systems for fluid reservoir retention |
US9522223B2 (en) | 2013-01-18 | 2016-12-20 | Medtronic Minimed, Inc. | Systems for fluid reservoir retention |
US9033924B2 (en) | 2013-01-18 | 2015-05-19 | Medtronic Minimed, Inc. | Systems for fluid reservoir retention |
US10426383B2 (en) | 2013-01-22 | 2019-10-01 | Medtronic Minimed, Inc. | Muting glucose sensor oxygen response and reducing electrode edge growth with pulsed current plating |
US9308321B2 (en) | 2013-02-18 | 2016-04-12 | Medtronic Minimed, Inc. | Infusion device having gear assembly initialization |
US9173998B2 (en) | 2013-03-14 | 2015-11-03 | Tandem Diabetes Care, Inc. | System and method for detecting occlusions in an infusion pump |
US9486171B2 (en) | 2013-03-15 | 2016-11-08 | Tandem Diabetes Care, Inc. | Predictive calibration |
US10433773B1 (en) | 2013-03-15 | 2019-10-08 | Abbott Diabetes Care Inc. | Noise rejection methods and apparatus for sparsely sampled analyte sensor data |
CA2902234A1 (en) | 2013-03-15 | 2014-09-18 | Abbott Diabetes Care Inc. | Devices, systems, and methods associated with analyte monitoring devices and devices incorporating the same |
US8858884B2 (en) | 2013-03-15 | 2014-10-14 | American Sterilizer Company | Coupled enzyme-based method for electronic monitoring of biological indicator |
US9121050B2 (en) | 2013-03-15 | 2015-09-01 | American Sterilizer Company | Non-enzyme based detection method for electronic monitoring of biological indicator |
US9474475B1 (en) | 2013-03-15 | 2016-10-25 | Abbott Diabetes Care Inc. | Multi-rate analyte sensor data collection with sample rate configurable signal processing |
US9207515B2 (en) | 2013-03-15 | 2015-12-08 | Ashwin-Ushas Corporation, Inc. | Variable-emittance electrochromic devices and methods of preparing the same |
WO2014152034A1 (en) | 2013-03-15 | 2014-09-25 | Abbott Diabetes Care Inc. | Sensor fault detection using analyte sensor data pattern comparison |
US8920381B2 (en) | 2013-04-12 | 2014-12-30 | Medtronic Minimed, Inc. | Infusion set with improved bore configuration |
JP6568517B2 (en) | 2013-04-30 | 2019-08-28 | アボット ダイアベティス ケア インコーポレイテッドAbbott Diabetes Care Inc. | Device for continuous glucose monitoring of a user and method for preparing a sensor control device for continuous analyte monitoring of a user |
WO2014205412A1 (en) | 2013-06-21 | 2014-12-24 | Intuity Medical, Inc. | Analyte monitoring system with audible feedback |
US9433731B2 (en) | 2013-07-19 | 2016-09-06 | Medtronic Minimed, Inc. | Detecting unintentional motor motion and infusion device incorporating same |
DE112014003604T5 (en) | 2013-08-05 | 2016-06-02 | Fisher & Paykel Healthcare Limited | Seal for a patient interface, junction assemblies, and aspects thereof |
US9402949B2 (en) | 2013-08-13 | 2016-08-02 | Medtronic Minimed, Inc. | Detecting conditions associated with medical device operations using matched filters |
US9880528B2 (en) | 2013-08-21 | 2018-01-30 | Medtronic Minimed, Inc. | Medical devices and related updating methods and systems |
US9889257B2 (en) | 2013-08-21 | 2018-02-13 | Medtronic Minimed, Inc. | Systems and methods for updating medical devices |
US9259528B2 (en) | 2013-08-22 | 2016-02-16 | Medtronic Minimed, Inc. | Fluid infusion device with safety coupling |
US20150122647A1 (en) | 2013-11-07 | 2015-05-07 | Medtronic Minimed, Inc. | Enzyme matrices for use with ethylene oxide sterilization |
US9750878B2 (en) | 2013-12-11 | 2017-09-05 | Medtronic Minimed, Inc. | Closed-loop control of glucose according to a predicted blood glucose trajectory |
US9750877B2 (en) | 2013-12-11 | 2017-09-05 | Medtronic Minimed, Inc. | Predicted time to assess and/or control a glycemic state |
US9849240B2 (en) | 2013-12-12 | 2017-12-26 | Medtronic Minimed, Inc. | Data modification for predictive operations and devices incorporating same |
US10105488B2 (en) | 2013-12-12 | 2018-10-23 | Medtronic Minimed, Inc. | Predictive infusion device operations and related methods and systems |
US9694132B2 (en) | 2013-12-19 | 2017-07-04 | Medtronic Minimed, Inc. | Insertion device for insertion set |
US9834805B2 (en) | 2013-12-23 | 2017-12-05 | Verily Life Sciences Llc | Two-layer analyte sensor |
US9739746B1 (en) | 2013-12-23 | 2017-08-22 | Google Inc. | Analyte sensor incorporating negatively charged moieties |
US9855359B2 (en) | 2013-12-23 | 2018-01-02 | Verily Life Sciences Llc | Analyte sensors with ethylene oxide immunity |
US10379125B2 (en) | 2013-12-27 | 2019-08-13 | Becton, Dickinson And Company | System and method for dynamically calibrating and measuring analyte concentration in diabetes management monitors |
WO2015102745A1 (en) | 2013-12-31 | 2015-07-09 | Abbott Diabetes Care Inc. | Self-powered analyte sensor and devices using the same |
US9399096B2 (en) | 2014-02-06 | 2016-07-26 | Medtronic Minimed, Inc. | Automatic closed-loop control adjustments and infusion systems incorporating same |
US9861748B2 (en) | 2014-02-06 | 2018-01-09 | Medtronic Minimed, Inc. | User-configurable closed-loop notifications and infusion systems incorporating same |
US9987422B2 (en) | 2014-03-24 | 2018-06-05 | Medtronic Minimed, Inc. | Fluid infusion patch pump device with automatic startup feature |
US20170185748A1 (en) | 2014-03-30 | 2017-06-29 | Abbott Diabetes Care Inc. | Method and Apparatus for Determining Meal Start and Peak Events in Analyte Monitoring Systems |
US10001450B2 (en) | 2014-04-18 | 2018-06-19 | Medtronic Minimed, Inc. | Nonlinear mapping technique for a physiological characteristic sensor |
US10232113B2 (en) | 2014-04-24 | 2019-03-19 | Medtronic Minimed, Inc. | Infusion devices and related methods and systems for regulating insulin on board |
US9681828B2 (en) | 2014-05-01 | 2017-06-20 | Medtronic Minimed, Inc. | Physiological characteristic sensors and methods for forming such sensors |
US10275572B2 (en) | 2014-05-01 | 2019-04-30 | Medtronic Minimed, Inc. | Detecting blockage of a reservoir cavity during a seating operation of a fluid infusion device |
US10007765B2 (en) | 2014-05-19 | 2018-06-26 | Medtronic Minimed, Inc. | Adaptive signal processing for infusion devices and related methods and systems |
US10152049B2 (en) | 2014-05-19 | 2018-12-11 | Medtronic Minimed, Inc. | Glucose sensor health monitoring and related methods and systems |
US10274349B2 (en) | 2014-05-19 | 2019-04-30 | Medtronic Minimed, Inc. | Calibration factor adjustments for infusion devices and related methods and systems |
EP3624475B1 (en) | 2014-05-21 | 2024-03-20 | Abbott Diabetes Care, Inc. | Management of multiple devices within an analyte monitoring environment |
EP3152559B1 (en) | 2014-06-04 | 2020-12-02 | Pepex Biomedical, Inc. | Electrochemical sensors made using advanced printing technology |
WO2016022696A1 (en) | 2014-08-05 | 2016-02-11 | The Trustees Of Columbia University In The City Of New York | Method of isolating aptamers for minimal residual disease detection |
WO2016025064A1 (en) | 2014-08-15 | 2016-02-18 | Abbott Diabetes Care Inc. | Temperature insensitive in vivo analyte devices, methods and systems |
US9833563B2 (en) | 2014-09-26 | 2017-12-05 | Medtronic Minimed, Inc. | Systems for managing reservoir chamber pressure |
US9839753B2 (en) | 2014-09-26 | 2017-12-12 | Medtronic Minimed, Inc. | Systems for managing reservoir chamber pressure |
US10279126B2 (en) | 2014-10-07 | 2019-05-07 | Medtronic Minimed, Inc. | Fluid conduit assembly with gas trapping filter in the fluid flow path |
US10598624B2 (en) | 2014-10-23 | 2020-03-24 | Abbott Diabetes Care Inc. | Electrodes having at least one sensing structure and methods for making and using the same |
US9833564B2 (en) | 2014-11-25 | 2017-12-05 | Medtronic Minimed, Inc. | Fluid conduit assembly with air venting features |
US9987420B2 (en) | 2014-11-26 | 2018-06-05 | Medtronic Minimed, Inc. | Systems and methods for fluid infusion device with automatic reservoir fill |
US10195341B2 (en) | 2014-11-26 | 2019-02-05 | Medtronic Minimed, Inc. | Systems and methods for fluid infusion device with automatic reservoir fill |
US10987039B2 (en) | 2014-12-03 | 2021-04-27 | Stmicroelectronics S.R.L. | Microneedle array device and method of making |
US9636453B2 (en) | 2014-12-04 | 2017-05-02 | Medtronic Minimed, Inc. | Advance diagnosis of infusion device operating mode viability |
US9943645B2 (en) | 2014-12-04 | 2018-04-17 | Medtronic Minimed, Inc. | Methods for operating mode transitions and related infusion devices and systems |
US9937292B2 (en) | 2014-12-09 | 2018-04-10 | Medtronic Minimed, Inc. | Systems for filling a fluid infusion device reservoir |
US10265031B2 (en) | 2014-12-19 | 2019-04-23 | Medtronic Minimed, Inc. | Infusion devices and related methods and systems for automatic alert clearing |
US10307535B2 (en) | 2014-12-19 | 2019-06-04 | Medtronic Minimed, Inc. | Infusion devices and related methods and systems for preemptive alerting |
US10307528B2 (en) | 2015-03-09 | 2019-06-04 | Medtronic Minimed, Inc. | Extensible infusion devices and related methods |
US10449298B2 (en) | 2015-03-26 | 2019-10-22 | Medtronic Minimed, Inc. | Fluid injection devices and related methods |
US10254265B1 (en) * | 2015-04-10 | 2019-04-09 | Mohsen Rezayat | Sealed container sensor device |
EP3294134B1 (en) | 2015-05-14 | 2020-07-08 | Abbott Diabetes Care Inc. | Inserter system for a compact medical device and corresponding method |
US10213139B2 (en) | 2015-05-14 | 2019-02-26 | Abbott Diabetes Care Inc. | Systems, devices, and methods for assembling an applicator and sensor control device |
GB2538731B (en) | 2015-05-26 | 2019-05-22 | Imperial Innovations Ltd | Methods |
US10137243B2 (en) | 2015-05-26 | 2018-11-27 | Medtronic Minimed, Inc. | Infusion devices with distributed motor control and related operating methods |
US9999721B2 (en) | 2015-05-26 | 2018-06-19 | Medtronic Minimed, Inc. | Error handling in infusion devices with distributed motor control and related operating methods |
US10575767B2 (en) | 2015-05-29 | 2020-03-03 | Medtronic Minimed, Inc. | Method for monitoring an analyte, analyte sensor and analyte monitoring apparatus |
JP6822981B2 (en) | 2015-06-15 | 2021-01-27 | アボット ダイアベティス ケア インコーポレイテッドAbbott Diabetes Care Inc. | Stable lactic acid responsive sensor |
WO2016205558A1 (en) | 2015-06-18 | 2016-12-22 | Ultradian Diagnostics Llc | Methods and devices for determining metabolic states |
US10010668B2 (en) | 2015-06-22 | 2018-07-03 | Medtronic Minimed, Inc. | Occlusion detection techniques for a fluid infusion device having a rotary pump mechanism and a force sensor |
US9993594B2 (en) | 2015-06-22 | 2018-06-12 | Medtronic Minimed, Inc. | Occlusion detection techniques for a fluid infusion device having a rotary pump mechanism and rotor position sensors |
US9878095B2 (en) | 2015-06-22 | 2018-01-30 | Medtronic Minimed, Inc. | Occlusion detection techniques for a fluid infusion device having a rotary pump mechanism and multiple sensor contact elements |
US9987425B2 (en) | 2015-06-22 | 2018-06-05 | Medtronic Minimed, Inc. | Occlusion detection techniques for a fluid infusion device having a rotary pump mechanism and sensor contact elements |
US9879668B2 (en) | 2015-06-22 | 2018-01-30 | Medtronic Minimed, Inc. | Occlusion detection techniques for a fluid infusion device having a rotary pump mechanism and an optical sensor |
US10888272B2 (en) | 2015-07-10 | 2021-01-12 | Abbott Diabetes Care Inc. | Systems, devices, and methods for meal information collection, meal assessment, and analyte data correlation |
WO2017011346A1 (en) | 2015-07-10 | 2017-01-19 | Abbott Diabetes Care Inc. | System, device and method of dynamic glucose profile response to physiological parameters |
US10578785B2 (en) * | 2015-08-18 | 2020-03-03 | Corning Incorporated | Blocking coating with adhesion layer for ultraviolet optics |
US10459134B2 (en) * | 2015-08-18 | 2019-10-29 | Corning Incorporated | UV-blocking coating with capping layer in optical assembly having UV light source |
US10463297B2 (en) | 2015-08-21 | 2019-11-05 | Medtronic Minimed, Inc. | Personalized event detection methods and related devices and systems |
US10543314B2 (en) | 2015-08-21 | 2020-01-28 | Medtronic Minimed, Inc. | Personalized parameter modeling with signal calibration based on historical data |
US20170053552A1 (en) | 2015-08-21 | 2017-02-23 | Medtronic Minimed, Inc. | Management and prioritization of the delivery of glycemic insight messages |
US10201657B2 (en) | 2015-08-21 | 2019-02-12 | Medtronic Minimed, Inc. | Methods for providing sensor site rotation feedback and related infusion devices and systems |
US10293108B2 (en) | 2015-08-21 | 2019-05-21 | Medtronic Minimed, Inc. | Infusion devices and related patient ratio adjustment methods |
US9632059B2 (en) | 2015-09-03 | 2017-04-25 | Ashwin-Ushas Corporation, Inc. | Potentiostat/galvanostat with digital interface |
US9482880B1 (en) | 2015-09-15 | 2016-11-01 | Ashwin-Ushas Corporation, Inc. | Electrochromic eyewear |
US10117992B2 (en) | 2015-09-29 | 2018-11-06 | Medtronic Minimed, Inc. | Infusion devices and related rescue detection methods |
US11666702B2 (en) | 2015-10-19 | 2023-06-06 | Medtronic Minimed, Inc. | Medical devices and related event pattern treatment recommendation methods |
US11501867B2 (en) | 2015-10-19 | 2022-11-15 | Medtronic Minimed, Inc. | Medical devices and related event pattern presentation methods |
US10146911B2 (en) | 2015-10-23 | 2018-12-04 | Medtronic Minimed, Inc. | Medical devices and related methods and systems for data transfer |
US10037722B2 (en) | 2015-11-03 | 2018-07-31 | Medtronic Minimed, Inc. | Detecting breakage in a display element |
US10449306B2 (en) | 2015-11-25 | 2019-10-22 | Medtronics Minimed, Inc. | Systems for fluid delivery with wicking membrane |
EP3397397B1 (en) | 2015-12-30 | 2021-02-17 | DexCom, Inc. | Enzyme immobilized adhesive layer for analyte sensors |
DK3423591T3 (en) | 2016-03-04 | 2024-01-29 | Abbott Diabetes Care Inc | NAD(P)-dependent sensitive enzymes, electrodes and sensors and methods for their production and use |
SI3220137T1 (en) | 2016-03-14 | 2019-05-31 | F. Hoffmann-La Roche Ag | Method for detecting an interferent contribution in a biosensor |
US10589038B2 (en) | 2016-04-27 | 2020-03-17 | Medtronic Minimed, Inc. | Set connector systems for venting a fluid reservoir |
US10324058B2 (en) | 2016-04-28 | 2019-06-18 | Medtronic Minimed, Inc. | In-situ chemistry stack for continuous glucose sensors |
US11179078B2 (en) | 2016-06-06 | 2021-11-23 | Medtronic Minimed, Inc. | Polycarbonate urea/urethane polymers for use with analyte sensors |
US20180221636A1 (en) * | 2016-06-16 | 2018-08-09 | These Three Medical Inc. | Artificial Pancreas System and Method Therefor |
US11617832B2 (en) * | 2016-08-17 | 2023-04-04 | International Business Machines Corporation | Portal system-based bionic pancreas |
WO2018064471A1 (en) | 2016-09-29 | 2018-04-05 | The Regents Of The University Of California | Tracheotomy tube-based monitoring systems and methods |
US11097051B2 (en) | 2016-11-04 | 2021-08-24 | Medtronic Minimed, Inc. | Methods and apparatus for detecting and reacting to insufficient hypoglycemia response |
CN106725470B (en) * | 2016-11-22 | 2023-12-19 | 南通九诺医疗科技有限公司 | Continuous or discontinuous physiological parameter analysis system |
US10238030B2 (en) | 2016-12-06 | 2019-03-26 | Medtronic Minimed, Inc. | Wireless medical device with a complementary split ring resonator arrangement for suppression of electromagnetic interference |
US10272201B2 (en) | 2016-12-22 | 2019-04-30 | Medtronic Minimed, Inc. | Insertion site monitoring methods and related infusion devices and systems |
US10758406B2 (en) | 2016-12-30 | 2020-09-01 | Zoll Circulation, Inc. | High efficiency heat exchange catheters for control of patient body temperature |
US10561528B2 (en) | 2016-12-30 | 2020-02-18 | Zoll Circulation, Inc. | Fluid-circulating catheters useable for endovascular heat exchange |
CA3050721A1 (en) | 2017-01-23 | 2018-07-26 | Abbott Diabetes Care Inc. | Systems, devices and methods for analyte sensor insertion |
US10500135B2 (en) | 2017-01-30 | 2019-12-10 | Medtronic Minimed, Inc. | Fluid reservoir and systems for filling a fluid reservoir of a fluid infusion device |
US10532165B2 (en) | 2017-01-30 | 2020-01-14 | Medtronic Minimed, Inc. | Fluid reservoir and systems for filling a fluid reservoir of a fluid infusion device |
US10552580B2 (en) | 2017-02-07 | 2020-02-04 | Medtronic Minimed, Inc. | Infusion system consumables and related calibration methods |
US10363365B2 (en) | 2017-02-07 | 2019-07-30 | Medtronic Minimed, Inc. | Infusion devices and related consumable calibration methods |
US10646649B2 (en) | 2017-02-21 | 2020-05-12 | Medtronic Minimed, Inc. | Infusion devices and fluid identification apparatuses and methods |
US11207463B2 (en) | 2017-02-21 | 2021-12-28 | Medtronic Minimed, Inc. | Apparatuses, systems, and methods for identifying an infusate in a reservoir of an infusion device |
US11134868B2 (en) | 2017-03-17 | 2021-10-05 | Medtronic Minimed, Inc. | Metal pillar device structures and methods for making and using them in electrochemical and/or electrocatalytic applications |
WO2018175489A1 (en) | 2017-03-21 | 2018-09-27 | Abbott Diabetes Care Inc. | Methods, devices and system for providing diabetic condition diagnosis and therapy |
JP7271502B2 (en) * | 2017-03-22 | 2023-05-11 | フェポッド・オイ・リミテッド | Electrochemical assay for detection of opioids |
US10856784B2 (en) | 2017-06-30 | 2020-12-08 | Medtronic Minimed, Inc. | Sensor initialization methods for faster body sensor response |
DK3668400T3 (en) | 2017-08-18 | 2023-09-18 | Abbott Diabetes Care Inc | Method for individualized calibration of analyte sensors |
US20190223771A1 (en) | 2018-01-23 | 2019-07-25 | Medtronic Minimed, Inc. | Implantable polymer surfaces exhibiting reduced in vivo inflammatory responses |
EP3749198A1 (en) | 2018-02-05 | 2020-12-16 | Abbott Diabetes Care Inc. | Notes and event log information associated with analyte sensors |
US11186859B2 (en) | 2018-02-07 | 2021-11-30 | Medtronic Minimed, Inc. | Multilayer electrochemical analyte sensors and methods for making and using them |
US11220735B2 (en) | 2018-02-08 | 2022-01-11 | Medtronic Minimed, Inc. | Methods for controlling physical vapor deposition metal film adhesion to substrates and surfaces |
US11583213B2 (en) | 2018-02-08 | 2023-02-21 | Medtronic Minimed, Inc. | Glucose sensor electrode design |
WO2019222499A1 (en) | 2018-05-16 | 2019-11-21 | Medtronic Minimed, Inc. | Thermally stable glucose limiting membrane for glucose sensors |
US11424435B2 (en) | 2019-05-09 | 2022-08-23 | New Jersey Institute Of Technology | High oxidation state periodate battery |
USD1002852S1 (en) | 2019-06-06 | 2023-10-24 | Abbott Diabetes Care Inc. | Analyte sensor device |
US11718865B2 (en) | 2019-07-26 | 2023-08-08 | Medtronic Minimed, Inc. | Methods to improve oxygen delivery to implantable sensors |
US11523757B2 (en) | 2019-08-01 | 2022-12-13 | Medtronic Minimed, Inc. | Micro-pillar working electrodes design to reduce backflow of hydrogen peroxide in glucose sensor |
US11637328B2 (en) | 2019-12-18 | 2023-04-25 | New Jersey Institute Of Technology | Methods and devices for high-capacity flexible, printable, and conformal periodate and iodate batteries |
USD957438S1 (en) | 2020-07-29 | 2022-07-12 | Abbott Diabetes Care Inc. | Display screen or portion thereof with graphical user interface |
US20220031205A1 (en) | 2020-07-31 | 2022-02-03 | Medtronic Minimed, Inc. | Sensor identification and integrity check design |
US20220133190A1 (en) | 2020-10-29 | 2022-05-05 | Medtronic Minimed, Inc. | Glucose biosensors comprising direct electron transfer enzymes and methods of making and using them |
USD999913S1 (en) | 2020-12-21 | 2023-09-26 | Abbott Diabetes Care Inc | Analyte sensor inserter |
EP4284246A1 (en) | 2021-01-26 | 2023-12-06 | Abbott Diabetes Care, Inc. | Systems, devices, and methods related to ketone sensors |
US20220240823A1 (en) | 2021-01-29 | 2022-08-04 | Medtronic Minimed, Inc. | Interference rejection membranes useful with analyte sensors |
EP4307999A1 (en) | 2021-03-19 | 2024-01-24 | Dexcom, Inc. | Drug releasing membrane for analyte sensor |
EP4312762A1 (en) | 2021-03-31 | 2024-02-07 | Dexcom, Inc. | Filtering of continuous glucose monitor (cgm) signals with a kalman filter |
US20220313124A1 (en) | 2021-04-02 | 2022-10-06 | Dexcom, Inc. | Personalized modeling of blood glucose concentration impacted by individualized sensor characteristics and individualized physiological characteristics |
US20220338768A1 (en) | 2021-04-09 | 2022-10-27 | Medtronic Minimed, Inc. | Hexamethyldisiloxane membranes for analyte sensors |
US20230053254A1 (en) | 2021-08-13 | 2023-02-16 | Medtronic Minimed, Inc. | Dry electrochemical impedance spectroscopy metrology for conductive chemical layers |
WO2023043908A1 (en) | 2021-09-15 | 2023-03-23 | Dexcom, Inc. | Bioactive releasing membrane for analyte sensor |
US20230113175A1 (en) | 2021-10-08 | 2023-04-13 | Medtronic Minimed, Inc. | Immunosuppressant releasing coatings |
US20230123613A1 (en) | 2021-10-14 | 2023-04-20 | Medtronic Minimed, Inc. | Sensors for 3-hydroxybutyrate detection |
US20230172497A1 (en) | 2021-12-02 | 2023-06-08 | Medtronic Minimed, Inc. | Ketone limiting membrane and dual layer membrane approach for ketone sensing |
WO2023110190A1 (en) | 2021-12-13 | 2023-06-22 | Heraeus Medical Gmbh | Tests and methods for detecting bacterial infection |
DE102022000897A1 (en) | 2022-03-15 | 2023-09-21 | Ruhr-Universität Bochum, Körperschaft des öffentlichen Rechts | Implantable biosensor |
US20230293060A1 (en) | 2022-03-18 | 2023-09-21 | Stacy Hunt Duvall | Continuous multi-analyte sensor systems |
US20240023849A1 (en) | 2022-07-20 | 2024-01-25 | Medtronic Minimed, Inc. | Acrylate hydrogel membrane for dual function of diffusion limiting membrane as well as attenuation to the foreign body response |
WO2024050126A2 (en) | 2022-09-02 | 2024-03-07 | Dexcom, Inc. | Continuous analyte sensor devices and methods |
EP4357778A1 (en) | 2022-10-20 | 2024-04-24 | Heraeus Medical GmbH | Treatment of microbial infections diagnosed using the biomarker d-lactate |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4699157A (en) * | 1985-08-27 | 1987-10-13 | Electro-Catheter Corporation | Pacing catheter and method of making same |
US4986271A (en) * | 1989-07-19 | 1991-01-22 | The University Of New Mexico | Vivo refillable glucose sensor |
US5103816A (en) * | 1989-09-11 | 1992-04-14 | Biomedical Device Consultants, Inc. | Composite for use in making protective articles for use in laser surgery |
US5122244A (en) * | 1990-02-03 | 1992-06-16 | Boehringer Mannheim Gmbh | Method and sensor electrode system for the electrochemical determination of an analyte or an oxidoreductase as well as the use of suitable compounds therefor |
US5525511A (en) * | 1990-09-01 | 1996-06-11 | Environmental & Medical Products Ltd. | Electrochemical biosensor stability |
US5696314A (en) * | 1996-07-12 | 1997-12-09 | Chiron Diagnostics Corporation | Multilayer enzyme electrode membranes and methods of making same |
US5776324A (en) * | 1996-05-17 | 1998-07-07 | Encelle, Inc. | Electrochemical biosensors |
US6060176A (en) * | 1995-11-30 | 2000-05-09 | International Business Machines Corporation | Corrosion protection for metallic features |
US6387048B1 (en) * | 1997-10-20 | 2002-05-14 | Alfred E. Mann Foundation | Implantable sensor and integrity tests therefor |
US20050215871A1 (en) * | 2004-02-09 | 2005-09-29 | Feldman Benjamin J | Analyte sensor, and associated system and method employing a catalytic agent |
US20070042377A1 (en) * | 2003-10-29 | 2007-02-22 | Zhiqiang Gao | Biosensor |
Family Cites Families (452)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US470290A (en) * | 1892-03-08 | Automatic counter and alarm | ||
US400918A (en) * | 1889-04-09 | Walter s | ||
US32947A (en) * | 1861-07-30 | Machine for bending fifth-wheels fob | ||
US125139A (en) * | 1872-04-02 | Improvement in coolers for soda-water and other liquids | ||
US241309A (en) * | 1881-05-10 | davis | ||
US278647A (en) * | 1883-05-29 | Wood-polishing machine | ||
US255291A (en) * | 1882-03-21 | Revolving hay-rake | ||
US136362A (en) * | 1873-03-04 | Improvement in box-plaiting machines | ||
US177743A (en) * | 1876-05-23 | Improvement in expanding well-curbs | ||
US2073801A (en) * | 1934-10-08 | 1937-03-16 | Herbert E Linden | Renewable cutting edge |
US3260656A (en) | 1962-09-27 | 1966-07-12 | Corning Glass Works | Method and apparatus for electrolytically determining a species in a fluid |
US3653841A (en) | 1969-12-19 | 1972-04-04 | Hoffmann La Roche | Methods and compositions for determining glucose in blood |
US3934299A (en) * | 1970-04-24 | 1976-01-27 | Regester Willard D | Tooth cleaning device |
US3776832A (en) | 1970-11-10 | 1973-12-04 | Energetics Science | Electrochemical detection cell |
US3719564A (en) | 1971-05-10 | 1973-03-06 | Philip Morris Inc | Method of determining a reducible gas concentration and sensor therefor |
US3775832A (en) * | 1971-11-01 | 1973-12-04 | Ladish Co | Method of manufacturing shrouded gaskets |
US3943918A (en) | 1971-12-02 | 1976-03-16 | Tel-Pac, Inc. | Disposable physiological telemetric device |
US3837339A (en) | 1972-02-03 | 1974-09-24 | Whittaker Corp | Blood glucose level monitoring-alarm system and method therefor |
US4184429A (en) * | 1972-02-09 | 1980-01-22 | Max Datwyler & Co. | Constant bevel doctor blade and method and apparatus using same |
US3908657A (en) | 1973-01-15 | 1975-09-30 | Univ Johns Hopkins | System for continuous withdrawal of blood |
GB1394171A (en) | 1973-05-16 | 1975-05-14 | Whittaker Corp | Blood glucose level monitoring-alarm system and method therefor |
US4100048A (en) | 1973-09-20 | 1978-07-11 | U.S. Philips Corporation | Polarographic cell |
US3926760A (en) * | 1973-09-28 | 1975-12-16 | Du Pont | Process for electrophoretic deposition of polymer |
US3991770A (en) | 1974-01-24 | 1976-11-16 | Leveen Harry H | Method for treating benign and malignant tumors utilizing radio frequency, electromagnetic radiation |
US3972320A (en) | 1974-08-12 | 1976-08-03 | Gabor Ujhelyi Kalman | Patient monitoring system |
DE2504206C3 (en) * | 1975-02-01 | 1981-10-01 | Robert Bosch Gmbh, 7000 Stuttgart | Electrochemical measuring sensor for the determination of the oxygen content in exhaust gases, in particular in exhaust gases from internal combustion engines |
US4036749A (en) | 1975-04-30 | 1977-07-19 | Anderson Donald R | Purification of saline water |
US3979274A (en) | 1975-09-24 | 1976-09-07 | The Yellow Springs Instrument Company, Inc. | Membrane for enzyme electrodes |
US4016866A (en) | 1975-12-18 | 1977-04-12 | General Electric Company | Implantable electrochemical sensor |
US4055175A (en) | 1976-05-07 | 1977-10-25 | Miles Laboratories, Inc. | Blood glucose control apparatus |
DE2625834B2 (en) | 1976-06-09 | 1978-10-12 | Boehringer Mannheim Gmbh, 6800 Mannheim | Method for the determination of substrates or enzyme activities |
US4059406A (en) | 1976-07-12 | 1977-11-22 | E D T Supplies Limited | Electrochemical detector system |
US4076596A (en) | 1976-10-07 | 1978-02-28 | Leeds & Northrup Company | Apparatus for electrolytically determining a species in a fluid and method of use |
US4129128A (en) | 1977-02-23 | 1978-12-12 | Mcfarlane Richard H | Securing device for catheter placement assembly |
FR2387659A1 (en) | 1977-04-21 | 1978-11-17 | Armines | GLYCEMIA CONTROL AND REGULATION DEVICE |
US4098574A (en) | 1977-08-01 | 1978-07-04 | Eastman Kodak Company | Glucose detection system free from fluoride-ion interference |
US4178916A (en) | 1977-09-26 | 1979-12-18 | Mcnamara Elger W | Diabetic insulin alarm system |
JPS5912135B2 (en) | 1977-09-28 | 1984-03-21 | 松下電器産業株式会社 | enzyme electrode |
US4151845A (en) | 1977-11-25 | 1979-05-01 | Miles Laboratories, Inc. | Blood glucose control apparatus |
JPS5921500B2 (en) | 1978-01-28 | 1984-05-21 | 東洋紡績株式会社 | Enzyme membrane for oxygen electrode |
DK151000C (en) | 1978-02-17 | 1988-06-13 | Radiometer As | PROCEDURE AND APPARATUS FOR DETERMINING A PATIENT'S IN VIVO PLASMA-PH VALUE |
US4172770A (en) | 1978-03-27 | 1979-10-30 | Technicon Instruments Corporation | Flow-through electrochemical system analytical method |
DE2817363C2 (en) | 1978-04-20 | 1984-01-26 | Siemens AG, 1000 Berlin und 8000 München | Method for determining the concentration of sugar and a suitable electrocatalytic sugar sensor |
DE2827918A1 (en) * | 1978-06-26 | 1980-01-10 | Vdo Schindling | DEVICE FOR ADJUSTING AN ELECTRIC CLOCK |
US4344438A (en) | 1978-08-02 | 1982-08-17 | The United States Of America As Represented By The Department Of Health, Education And Welfare | Optical sensor of plasma constituents |
HU177369B (en) | 1978-09-08 | 1981-09-28 | Radelkis Electrokemiai | Industrial molecule-selective sensing device and method for producing same |
US4240438A (en) | 1978-10-02 | 1980-12-23 | Wisconsin Alumni Research Foundation | Method for monitoring blood glucose levels and elements |
EP0010375B1 (en) | 1978-10-02 | 1983-07-20 | Xerox Corporation | Electrostatographic processing system |
US4247297A (en) | 1979-02-23 | 1981-01-27 | Miles Laboratories, Inc. | Test means and method for interference resistant determination of oxidizing substances |
US4573994A (en) | 1979-04-27 | 1986-03-04 | The Johns Hopkins University | Refillable medication infusion apparatus |
US4365637A (en) | 1979-07-05 | 1982-12-28 | Dia-Med, Inc. | Perspiration indicating alarm for diabetics |
US4401122A (en) | 1979-08-02 | 1983-08-30 | Children's Hospital Medical Center | Cutaneous methods of measuring body substances |
US4458686A (en) | 1979-08-02 | 1984-07-10 | Children's Hospital Medical Center | Cutaneous methods of measuring body substances |
US4293396A (en) | 1979-09-27 | 1981-10-06 | Prototech Company | Thin carbon-cloth-based electrocatalytic gas diffusion electrodes, and electrochemical cells comprising the same |
DE3114441A1 (en) | 1980-04-11 | 1982-03-04 | Radiometer A/S, 2400 Koebenhavn | ELECTROCHEMICAL MEASURING ELECTRODE DEVICE |
US4450842A (en) | 1980-04-25 | 1984-05-29 | Cordis Corporation | Solid state reference electrode |
US4340458A (en) | 1980-06-02 | 1982-07-20 | Joslin Diabetes Center, Inc. | Glucose sensor |
US4356074A (en) | 1980-08-25 | 1982-10-26 | The Yellow Springs Instrument Company, Inc. | Substrate specific galactose oxidase enzyme electrodes |
US4404066A (en) | 1980-08-25 | 1983-09-13 | The Yellow Springs Instrument Company | Method for quantitatively determining a particular substrate catalyzed by a multisubstrate enzyme |
USRE32947E (en) | 1980-09-30 | 1989-06-13 | Baptist Medical Center Of Oklahoma, Inc. | Magnetic transcutaneous mount for external device of an associated implant |
US4352960A (en) | 1980-09-30 | 1982-10-05 | Baptist Medical Center Of Oklahoma, Inc. | Magnetic transcutaneous mount for external device of an associated implant |
US4425920A (en) * | 1980-10-24 | 1984-01-17 | Purdue Research Foundation | Apparatus and method for measurement and control of blood pressure |
US4327725A (en) | 1980-11-25 | 1982-05-04 | Alza Corporation | Osmotic device with hydrogel driving member |
US4390621A (en) | 1980-12-15 | 1983-06-28 | Miles Laboratories, Inc. | Method and device for detecting glucose concentration |
US4436094A (en) | 1981-03-09 | 1984-03-13 | Evreka, Inc. | Monitor for continuous in vivo measurement of glucose concentration |
AT369254B (en) | 1981-05-07 | 1982-12-27 | Otto Dipl Ing Dr Tech Prohaska | MEDICAL PROBE |
FR2508305B1 (en) | 1981-06-25 | 1986-04-11 | Slama Gerard | DEVICE FOR CAUSING A LITTLE BITE TO COLLECT A BLOOD DROP |
US4440175A (en) | 1981-08-10 | 1984-04-03 | University Patents, Inc. | Membrane electrode for non-ionic species |
DE3138194A1 (en) * | 1981-09-25 | 1983-04-14 | Basf Ag, 6700 Ludwigshafen | WATER-INSOLUBLE POROESES PROTEIN MATERIAL, THEIR PRODUCTION AND USE |
EP0078636B2 (en) | 1981-10-23 | 1997-04-02 | MediSense, Inc. | Sensor for components of a liquid mixture |
US4431004A (en) | 1981-10-27 | 1984-02-14 | Bessman Samuel P | Implantable glucose sensor |
US4418148A (en) | 1981-11-05 | 1983-11-29 | Miles Laboratories, Inc. | Multilayer enzyme electrode membrane |
JPS5886083A (en) | 1981-11-12 | 1983-05-23 | Wako Pure Chem Ind Ltd | Stabilizing agent for glycerol-3-phosphoric acid oxidase |
US4494950A (en) * | 1982-01-19 | 1985-01-22 | The Johns Hopkins University | Plural module medication delivery system |
JPS58153154A (en) | 1982-03-09 | 1983-09-12 | Ajinomoto Co Inc | Qualified electrode |
US4581336A (en) | 1982-04-26 | 1986-04-08 | Uop Inc. | Surface-modified electrodes |
FI831399L (en) | 1982-04-29 | 1983-10-30 | Agripat Sa | KONTAKTLINS AV HAERDAD POLYVINYL ALCOHOL |
DD227029A3 (en) * | 1982-05-13 | 1985-09-04 | Zentralinst F Diabetiker G Kat | ENZYME ELECTRODE FOR GLUCOSE MEASUREMENT |
DE3221339A1 (en) | 1982-06-05 | 1983-12-08 | Basf Ag, 6700 Ludwigshafen | METHOD FOR THE ELECTROCHEMICAL HYDRATION OF NICOTINAMIDADENINE-DINUCLEOTIDE |
US4427770A (en) | 1982-06-14 | 1984-01-24 | Miles Laboratories, Inc. | High glucose-determining analytical element |
EP0098592A3 (en) | 1982-07-06 | 1985-08-21 | Fujisawa Pharmaceutical Co., Ltd. | Portable artificial pancreas |
US4534356A (en) | 1982-07-30 | 1985-08-13 | Diamond Shamrock Chemicals Company | Solid state transcutaneous blood gas sensors |
DE3228551A1 (en) | 1982-07-30 | 1984-02-02 | Siemens AG, 1000 Berlin und 8000 München | METHOD FOR DETERMINING SUGAR CONCENTRATION |
US4571292A (en) | 1982-08-12 | 1986-02-18 | Case Western Reserve University | Apparatus for electrochemical measurements |
US4552840A (en) | 1982-12-02 | 1985-11-12 | California And Hawaiian Sugar Company | Enzyme electrode and method for dextran analysis |
US4461691A (en) | 1983-02-10 | 1984-07-24 | The United States Of America As Represented By The United States Department Of Energy | Organic conductive films for semiconductor electrodes |
US4679562A (en) | 1983-02-16 | 1987-07-14 | Cardiac Pacemakers, Inc. | Glucose sensor |
EP0136362B1 (en) | 1983-03-11 | 1990-12-19 | Matsushita Electric Industrial Co., Ltd. | Biosensor |
IT1170375B (en) | 1983-04-19 | 1987-06-03 | Giuseppe Bombardieri | Implantable device for measuring body fluid parameters |
US5509410A (en) | 1983-06-06 | 1996-04-23 | Medisense, Inc. | Strip electrode including screen printing of a single layer |
US5682884A (en) | 1983-05-05 | 1997-11-04 | Medisense, Inc. | Strip electrode with screen printing |
CA1219040A (en) | 1983-05-05 | 1987-03-10 | Elliot V. Plotkin | Measurement of enzyme-catalysed reactions |
CA1218704A (en) | 1983-05-05 | 1987-03-03 | Graham Davis | Assay systems using more than one enzyme |
GB2154003B (en) | 1983-12-16 | 1988-02-17 | Genetics Int Inc | Diagnostic aid |
CA1220818A (en) | 1983-05-05 | 1987-04-21 | Hugh A.O. Hill | Assay techniques utilising specific binding agents |
CA1226036A (en) | 1983-05-05 | 1987-08-25 | Irving J. Higgins | Analytical equipment and sensor electrodes therefor |
US4484987A (en) | 1983-05-19 | 1984-11-27 | The Regents Of The University Of California | Method and membrane applicable to implantable sensor |
US4650547A (en) | 1983-05-19 | 1987-03-17 | The Regents Of The University Of California | Method and membrane applicable to implantable sensor |
US4524114A (en) | 1983-07-05 | 1985-06-18 | Allied Corporation | Bifunctional air electrode |
US4538616A (en) | 1983-07-25 | 1985-09-03 | Robert Rogoff | Blood sugar level sensing and monitoring transducer |
US4655880A (en) | 1983-08-01 | 1987-04-07 | Case Western Reserve University | Apparatus and method for sensing species, substances and substrates using oxidase |
US4543955A (en) | 1983-08-01 | 1985-10-01 | Cordis Corporation | System for controlling body implantable action device |
SE8305704D0 (en) | 1983-10-18 | 1983-10-18 | Leo Ab | Cuvette |
US4560534A (en) * | 1983-11-02 | 1985-12-24 | Miles Laboratories, Inc. | Polymer catalyst transducers |
US4522690A (en) | 1983-12-01 | 1985-06-11 | Honeywell Inc. | Electrochemical sensing of carbon monoxide |
US4840893A (en) | 1983-12-16 | 1989-06-20 | Medisense, Inc. | Electrochemical assay for nucleic acids and nucleic acid probes |
SU1281988A1 (en) | 1984-03-15 | 1987-01-07 | Институт биохимии АН ЛитССР | Electrochemical transducer for measuring glucose concentration |
US4684537A (en) | 1984-04-30 | 1987-08-04 | R. E. Stiftung | Process for the sensitization of an oxidation/reduction photocatalyst, and photocatalyst thus obtained |
ATE143289T1 (en) | 1984-06-13 | 1996-10-15 | Applied Research Systems | APPARATUS USED IN CHEMICAL TESTING PROCEDURES |
US5141868A (en) | 1984-06-13 | 1992-08-25 | Internationale Octrooi Maatschappij "Octropa" Bv | Device for use in chemical test procedures |
DK8601218A (en) | 1984-07-18 | 1986-03-17 | ||
DE3429596A1 (en) | 1984-08-10 | 1986-02-20 | Siemens AG, 1000 Berlin und 8000 München | DEVICE FOR THE PHYSIOLOGICAL FREQUENCY CONTROL OF A PACEMAKER PROVIDED WITH A PICTURE ELECTRODE |
US4820399A (en) | 1984-08-31 | 1989-04-11 | Shimadzu Corporation | Enzyme electrodes |
CA1254091A (en) | 1984-09-28 | 1989-05-16 | Vladimir Feingold | Implantable medication infusion system |
GB2168815A (en) | 1984-11-13 | 1986-06-25 | Genetics Int Inc | Bioelectrochemical assay electrode |
US4717673A (en) | 1984-11-23 | 1988-01-05 | Massachusetts Institute Of Technology | Microelectrochemical devices |
US4721601A (en) | 1984-11-23 | 1988-01-26 | Massachusetts Institute Of Technology | Molecule-based microelectronic devices |
US4936956A (en) | 1984-11-23 | 1990-06-26 | Massachusetts Institute Of Technology | Microelectrochemical devices based on inorganic redox active material and method for sensing |
JPH0617889B2 (en) | 1984-11-27 | 1994-03-09 | 株式会社日立製作所 | Biochemical sensor |
EP0186210B1 (en) * | 1984-12-28 | 1992-04-22 | TERUMO KABUSHIKI KAISHA trading as TERUMO CORPORATION | Ion sensor |
GB8500729D0 (en) | 1985-01-11 | 1985-02-13 | Hill H A O | Surface-modified electrode |
AU5481786A (en) | 1985-03-20 | 1986-09-25 | Hochmair, E.S. | Transcutaneous power and signal transmission system |
US4627445A (en) | 1985-04-08 | 1986-12-09 | Garid, Inc. | Glucose medical monitoring system |
US5279294A (en) | 1985-04-08 | 1994-01-18 | Cascade Medical, Inc. | Medical diagnostic system |
US4781798A (en) | 1985-04-19 | 1988-11-01 | The Regents Of The University Of California | Transparent multi-oxygen sensor array and method of using same |
US4671288A (en) | 1985-06-13 | 1987-06-09 | The Regents Of The University Of California | Electrochemical cell sensor for continuous short-term use in tissues and blood |
US4897173A (en) | 1985-06-21 | 1990-01-30 | Matsushita Electric Industrial Co., Ltd. | Biosensor and method for making the same |
US4938860A (en) | 1985-06-28 | 1990-07-03 | Miles Inc. | Electrode for electrochemical sensors |
US4796634A (en) | 1985-08-09 | 1989-01-10 | Lawrence Medical Systems, Inc. | Methods and apparatus for monitoring cardiac output |
US4805624A (en) | 1985-09-09 | 1989-02-21 | The Montefiore Hospital Association Of Western Pa | Low-potential electrochemical redox sensors |
US4680268A (en) | 1985-09-18 | 1987-07-14 | Children's Hospital Medical Center | Implantable gas-containing biosensor and method for measuring an analyte such as glucose |
US4890620A (en) | 1985-09-20 | 1990-01-02 | The Regents Of The University Of California | Two-dimensional diffusion glucose substrate sensing electrode |
US4627908A (en) | 1985-10-24 | 1986-12-09 | Chevron Research Company | Process for stabilizing lube base stocks derived from bright stock |
US4830959A (en) | 1985-11-11 | 1989-05-16 | Medisense, Inc. | Electrochemical enzymic assay procedures |
GB8529300D0 (en) | 1985-11-28 | 1986-01-02 | Ici Plc | Membrane |
US4776944A (en) | 1986-03-20 | 1988-10-11 | Jiri Janata | Chemical selective sensors utilizing admittance modulated membranes |
US4685463A (en) | 1986-04-03 | 1987-08-11 | Williams R Bruce | Device for continuous in vivo measurement of blood glucose concentrations |
GB8608700D0 (en) | 1986-04-10 | 1986-05-14 | Genetics Int Inc | Measurement of electroactive species in solution |
US4726378A (en) | 1986-04-11 | 1988-02-23 | Minnesota Mining And Manufacturing Company | Adjustable magnetic supercutaneous device and transcutaneous coupling apparatus |
US4994167A (en) | 1986-04-15 | 1991-02-19 | Markwell Medical Institute, Inc. | Biological fluid measuring device |
US4757022A (en) | 1986-04-15 | 1988-07-12 | Markwell Medical Institute, Inc. | Biological fluid measuring device |
US4795542A (en) * | 1986-04-24 | 1989-01-03 | St. Jude Medical, Inc. | Electrochemical concentration detector device |
US4909908A (en) | 1986-04-24 | 1990-03-20 | Pepi Ross | Electrochemical cncentration detector method |
DE3614821A1 (en) | 1986-05-02 | 1987-11-05 | Siemens Ag | IMPLANTABLE, CALIBRABLE MEASURING DEVICE FOR A BODY SUBSTANCE AND CALIBRATION METHOD |
US4703756A (en) | 1986-05-06 | 1987-11-03 | The Regents Of The University Of California | Complete glucose monitoring system with an implantable, telemetered sensor module |
US4731726A (en) | 1986-05-19 | 1988-03-15 | Healthware Corporation | Patient-operated glucose monitor and diabetes management system |
GB8612861D0 (en) | 1986-05-27 | 1986-07-02 | Cambridge Life Sciences | Immobilised enzyme biosensors |
US4969468A (en) | 1986-06-17 | 1990-11-13 | Alfred E. Mann Foundation For Scientific Research | Electrode array for use in connection with a living body and method of manufacture |
US4911794A (en) | 1986-06-20 | 1990-03-27 | Molecular Devices Corporation | Measuring with zero volume cell |
US5001054A (en) | 1986-06-26 | 1991-03-19 | Becton, Dickinson And Company | Method for monitoring glucose |
JPS636451A (en) | 1986-06-27 | 1988-01-12 | Terumo Corp | Enzyme sensor |
US4764416A (en) | 1986-07-01 | 1988-08-16 | Mitsubishi Denki Kabushiki Kaisha | Electric element circuit using oxidation-reduction substances |
US4917800A (en) | 1986-07-07 | 1990-04-17 | Bend Research, Inc. | Functional, photochemically active, and chemically asymmetric membranes by interfacial polymerization of derivatized multifunctional prepolymers |
US4784736A (en) | 1986-07-07 | 1988-11-15 | Bend Research, Inc. | Functional, photochemically active, and chemically asymmetric membranes by interfacial polymerization of derivatized multifunctional prepolymers |
US4726716A (en) | 1986-07-21 | 1988-02-23 | Mcguire Thomas V | Fastener for catheter |
GB8618022D0 (en) | 1986-07-23 | 1986-08-28 | Unilever Plc | Electrochemical measurements |
US4787837A (en) | 1986-08-07 | 1988-11-29 | Union Carbide Corporation | Wear-resistant ceramic, cermet or metallic embossing surfaces, methods for producing same, methods of embossing articles by same and novel embossed articles |
US4894137A (en) | 1986-09-12 | 1990-01-16 | Omron Tateisi Electronics Co. | Enzyme electrode |
US5055171A (en) | 1986-10-06 | 1991-10-08 | T And G Corporation | Ionic semiconductor materials and applications thereof |
US5184619A (en) * | 1986-11-10 | 1993-02-09 | Peritronics Medical, Inc. | Intrauterine pressure and fetal heart rate sensor |
US4897162A (en) | 1986-11-14 | 1990-01-30 | The Cleveland Clinic Foundation | Pulse voltammetry |
DE3700119A1 (en) | 1987-01-03 | 1988-07-14 | Inst Diabetestechnologie Gemei | IMPLANTABLE ELECTROCHEMICAL SENSOR |
US4934369A (en) | 1987-01-30 | 1990-06-19 | Minnesota Mining And Manufacturing Company | Intravascular blood parameter measurement system |
EP0278647A3 (en) | 1987-02-09 | 1989-09-20 | AT&T Corp. | Electronchemical processes involving enzymes |
GB2201248B (en) | 1987-02-24 | 1991-04-17 | Ici Plc | Enzyme electrode sensors |
US5002054A (en) | 1987-02-25 | 1991-03-26 | Ash Medical Systems, Inc. | Interstitial filtration and collection device and method for long-term monitoring of physiological constituents of the body |
US4854322A (en) | 1987-02-25 | 1989-08-08 | Ash Medical Systems, Inc. | Capillary filtration and collection device for long-term monitoring of blood constituents |
US4777953A (en) | 1987-02-25 | 1988-10-18 | Ash Medical Systems, Inc. | Capillary filtration and collection method for long-term monitoring of blood constituents |
GB2204408A (en) | 1987-03-04 | 1988-11-09 | Plessey Co Plc | Biosensor device |
US4848351A (en) | 1987-03-04 | 1989-07-18 | Sentry Medical Products, Inc. | Medical electrode assembly |
US4923586A (en) | 1987-03-31 | 1990-05-08 | Daikin Industries, Ltd. | Enzyme electrode unit |
US4935345A (en) * | 1987-04-07 | 1990-06-19 | Arizona Board Of Regents | Implantable microelectronic biochemical sensor incorporating thin film thermopile |
US4759828A (en) | 1987-04-09 | 1988-07-26 | Nova Biomedical Corporation | Glucose electrode and method of determining glucose |
US5352348A (en) | 1987-04-09 | 1994-10-04 | Nova Biomedical Corporation | Method of using enzyme electrode |
US4749985A (en) | 1987-04-13 | 1988-06-07 | United States Of America As Represented By The United States Department Of Energy | Functional relationship-based alarm processing |
EP0290683A3 (en) | 1987-05-01 | 1988-12-14 | Diva Medical Systems B.V. | Diabetes management system and apparatus |
US5286364A (en) | 1987-06-08 | 1994-02-15 | Rutgers University | Surface-modified electochemical biosensor |
US4822337A (en) | 1987-06-22 | 1989-04-18 | Stanley Newhouse | Insulin delivery method and apparatus |
JPH07122624B2 (en) | 1987-07-06 | 1995-12-25 | ダイキン工業株式会社 | Biosensor |
US4805625A (en) * | 1987-07-08 | 1989-02-21 | Ad-Tech Medical Instrument Corporation | Sphenoidal electrode and insertion method |
US4874500A (en) * | 1987-07-15 | 1989-10-17 | Sri International | Microelectrochemical sensor and sensor array |
GB8718430D0 (en) | 1987-08-04 | 1987-09-09 | Ici Plc | Sensor |
JPS6423155A (en) | 1987-07-17 | 1989-01-25 | Daikin Ind Ltd | Electrode refreshing device for biosensor |
DE3854650T2 (en) | 1987-08-11 | 1996-03-21 | Terumo Corp | AUTOMATIC SPHYGMOMANOMETER. |
US4974929A (en) | 1987-09-22 | 1990-12-04 | Baxter International, Inc. | Fiber optical probe connector for physiologic measurement devices |
NL8702370A (en) | 1987-10-05 | 1989-05-01 | Groningen Science Park | METHOD AND SYSTEM FOR GLUCOSE DETERMINATION AND USEABLE MEASURING CELL ASSEMBLY. |
US4815469A (en) | 1987-10-08 | 1989-03-28 | Siemens-Pacesetter, Inc. | Implantable blood oxygen sensor and method of use |
GB8725936D0 (en) | 1987-11-05 | 1987-12-09 | Genetics Int Inc | Sensing system |
JPH01140054A (en) | 1987-11-26 | 1989-06-01 | Nec Corp | Glucose sensor |
US4813424A (en) | 1987-12-23 | 1989-03-21 | University Of New Mexico | Long-life membrane electrode for non-ionic species |
US5108564A (en) | 1988-03-15 | 1992-04-28 | Tall Oak Ventures | Method and apparatus for amperometric diagnostic analysis |
WO1989009397A1 (en) | 1988-03-31 | 1989-10-05 | Matsushita Electric Industrial Co., Ltd. | Biosensor and process for its production |
GB8817421D0 (en) | 1988-07-21 | 1988-08-24 | Medisense Inc | Bioelectrochemical electrodes |
US4954129A (en) | 1988-07-25 | 1990-09-04 | Abbott Laboratories | Hydrodynamic clot flushing |
US4925268A (en) | 1988-07-25 | 1990-05-15 | Abbott Laboratories | Fiber-optic physiological probes |
EP0353328A1 (en) | 1988-08-03 | 1990-02-07 | Dräger Nederland B.V. | A polarographic-amperometric three-electrode sensor |
US4898591A (en) * | 1988-08-09 | 1990-02-06 | Mallinckrodt, Inc. | Nylon-PEBA copolymer catheter |
US5340722A (en) | 1988-08-24 | 1994-08-23 | Avl Medical Instruments Ag | Method for the determination of the concentration of an enzyme substrate and a sensor for carrying out the method |
US5264106A (en) | 1988-10-07 | 1993-11-23 | Medisense, Inc. | Enhanced amperometric sensor |
US4995402A (en) * | 1988-10-12 | 1991-02-26 | Thorne, Smith, Astill Technologies, Inc. | Medical droplet whole blood and like monitoring |
JPH02128152A (en) | 1988-11-08 | 1990-05-16 | Nec Corp | Immobilization of enzyme and biosensor |
US5205920A (en) | 1989-03-03 | 1993-04-27 | Noboru Oyama | Enzyme sensor and method of manufacturing the same |
US5269891A (en) | 1989-03-09 | 1993-12-14 | Novo Nordisk A/S | Method and apparatus for determination of a constituent in a fluid |
JPH02298855A (en) * | 1989-03-20 | 1990-12-11 | Assoc Univ Inc | Electrochemical biosensor using immobilized enzyme and redox polymer |
US5089112A (en) | 1989-03-20 | 1992-02-18 | Associated Universities, Inc. | Electrochemical biosensor based on immobilized enzymes and redox polymers |
US4953552A (en) | 1989-04-21 | 1990-09-04 | Demarzo Arthur P | Blood glucose monitoring system |
EP0396788A1 (en) | 1989-05-08 | 1990-11-14 | Dräger Nederland B.V. | Process and sensor for measuring the glucose content of glucosecontaining fluids |
US5236567A (en) | 1989-05-31 | 1993-08-17 | Nakano Vinegar Co., Ltd. | Enzyme sensor |
US5198367A (en) | 1989-06-09 | 1993-03-30 | Masuo Aizawa | Homogeneous amperometric immunoassay |
FR2648353B1 (en) | 1989-06-16 | 1992-03-27 | Europhor Sa | MICRODIALYSIS PROBE |
CH677149A5 (en) | 1989-07-07 | 1991-04-15 | Disetronic Ag | |
US5431160A (en) | 1989-07-19 | 1995-07-11 | University Of New Mexico | Miniature implantable refillable glucose sensor and material therefor |
US5264105A (en) * | 1989-08-02 | 1993-11-23 | Gregg Brian A | Enzyme electrodes |
US5264104A (en) * | 1989-08-02 | 1993-11-23 | Gregg Brian A | Enzyme electrodes |
US5320725A (en) * | 1989-08-02 | 1994-06-14 | E. Heller & Company | Electrode and method for the detection of hydrogen peroxide |
US5262035A (en) * | 1989-08-02 | 1993-11-16 | E. Heller And Company | Enzyme electrodes |
US4944299A (en) | 1989-08-08 | 1990-07-31 | Siemens-Pacesetter, Inc. | High speed digital telemetry system for implantable device |
US5190041A (en) | 1989-08-11 | 1993-03-02 | Palti Yoram Prof | System for monitoring and controlling blood glucose |
US5101814A (en) | 1989-08-11 | 1992-04-07 | Palti Yoram Prof | System for monitoring and controlling blood glucose |
US5095904A (en) | 1989-09-08 | 1992-03-17 | Cochlear Pty. Ltd. | Multi-peak speech procession |
US5050612A (en) | 1989-09-12 | 1991-09-24 | Matsumura Kenneth N | Device for computer-assisted monitoring of the body |
FR2652736A1 (en) | 1989-10-06 | 1991-04-12 | Neftel Frederic | IMPLANTABLE DEVICE FOR EVALUATING THE RATE OF GLUCOSE. |
DE3934299C1 (en) | 1989-10-13 | 1990-10-25 | Gesellschaft Fuer Biotechnologische Forschung Mbh (Gbf), 3300 Braunschweig, De | |
EP0429076B1 (en) | 1989-11-24 | 1996-01-31 | Matsushita Electric Industrial Co., Ltd. | Preparation of biosensor |
US5082550A (en) * | 1989-12-11 | 1992-01-21 | The United States Of America As Represented By The Department Of Energy | Enzyme electrochemical sensor electrode and method of making it |
US5342789A (en) | 1989-12-14 | 1994-08-30 | Sensor Technologies, Inc. | Method and device for detecting and quantifying glucose in body fluids |
CA2069946C (en) | 1989-12-15 | 1999-01-26 | Klaus H. Pollmann | Redox mediator reagent and biosensor |
US5286362A (en) | 1990-02-03 | 1994-02-15 | Boehringer Mannheim Gmbh | Method and sensor electrode system for the electrochemical determination of an analyte or an oxidoreductase as well as the use of suitable compounds therefor |
US5109850A (en) | 1990-02-09 | 1992-05-05 | Massachusetts Institute Of Technology | Automatic blood monitoring for medication delivery method and apparatus |
US5108819A (en) | 1990-02-14 | 1992-04-28 | Eli Lilly And Company | Thin film electrical component |
US5161532A (en) | 1990-04-19 | 1992-11-10 | Teknekron Sensor Development Corporation | Integral interstitial fluid sensor |
US5165407A (en) | 1990-04-19 | 1992-11-24 | The University Of Kansas | Implantable glucose sensor |
DE4014109A1 (en) * | 1990-05-02 | 1991-11-07 | Siemens Ag | ELECROCHEMICAL DETERMINATION OF THE OXYGEN CONCENTRATION |
GB2245665A (en) | 1990-06-30 | 1992-01-08 | Draftex Ind Ltd | Flexible protective bellows. |
SE506135C2 (en) | 1990-07-11 | 1997-11-17 | Radi Medical Systems | Sensor and conductor construction |
US5202261A (en) * | 1990-07-19 | 1993-04-13 | Miles Inc. | Conductive sensors and their use in diagnostic assays |
US5250439A (en) * | 1990-07-19 | 1993-10-05 | Miles Inc. | Use of conductive sensors in diagnostic assays |
US5395332A (en) | 1990-08-28 | 1995-03-07 | Scimed Life Systems, Inc. | Intravascualr catheter with distal tip guide wire lumen |
US5431806A (en) | 1990-09-17 | 1995-07-11 | Fujitsu Limited | Oxygen electrode and temperature sensor |
ATE106015T1 (en) | 1990-09-28 | 1994-06-15 | Pfizer | METER DELIVERY DEVICE CONTAINING A HYDROPHOBIC AGENT. |
US5520731A (en) | 1990-10-20 | 1996-05-28 | Zanders Feinpapiere Ag | Doctor blade for use in coating continuous strips of material or similar substrates |
US5058592A (en) | 1990-11-02 | 1991-10-22 | Whisler G Douglas | Adjustable mountable doppler ultrasound transducer device |
AU1356792A (en) * | 1991-01-25 | 1992-08-27 | Markwell Medical Institute, Inc. | Implantable biological fluid measuring device |
FR2673289B1 (en) | 1991-02-21 | 1994-06-17 | Asulab Sa | SENSOR FOR MEASURING THE QUANTITY OF A COMPONENT IN SOLUTION. |
US5593852A (en) | 1993-12-02 | 1997-01-14 | Heller; Adam | Subcutaneous glucose electrode |
JPH04278450A (en) * | 1991-03-04 | 1992-10-05 | Adam Heller | Biosensor and method for analyzing subject |
US5262305A (en) * | 1991-03-04 | 1993-11-16 | E. Heller & Company | Interferant eliminating biosensors |
GB9107193D0 (en) | 1991-04-05 | 1991-05-22 | Wilson Robert | Analytical devices |
US5208154A (en) | 1991-04-08 | 1993-05-04 | The United States Of America As Represented By The Department Of Energy | Reversibly immobilized biological materials in monolayer films on electrodes |
US5192416A (en) | 1991-04-09 | 1993-03-09 | New Mexico State University Technology Transfer Corporation | Method and apparatus for batch injection analysis |
US5293546A (en) * | 1991-04-17 | 1994-03-08 | Martin Marietta Corporation | Oxide coated metal grid electrode structure in display devices |
JP3118015B2 (en) | 1991-05-17 | 2000-12-18 | アークレイ株式会社 | Biosensor and separation and quantification method using the same |
US5209229A (en) | 1991-05-20 | 1993-05-11 | Telectronics Pacing Systems, Inc. | Apparatus and method employing plural electrode configurations for cardioversion of atrial fibrillation in an arrhythmia control system |
JP2816262B2 (en) * | 1991-07-09 | 1998-10-27 | 工業技術院長 | Carbon microsensor electrode and method of manufacturing the same |
GB9120144D0 (en) | 1991-09-20 | 1991-11-06 | Imperial College | A dialysis electrode device |
US5264092A (en) | 1991-10-02 | 1993-11-23 | Moltech Corporation | Redox polymer modified electrode for the electrochemical regeneration of coenzyme |
US5322063A (en) | 1991-10-04 | 1994-06-21 | Eli Lilly And Company | Hydrophilic polyurethane membranes for electrochemical glucose sensors |
US5264103A (en) | 1991-10-18 | 1993-11-23 | Matsushita Electric Industrial Co., Ltd. | Biosensor and a method for measuring a concentration of a substrate in a sample |
US5217595A (en) | 1991-10-25 | 1993-06-08 | The Yellow Springs Instrument Company, Inc. | Electrochemical gas sensor |
US5415164A (en) | 1991-11-04 | 1995-05-16 | Biofield Corp. | Apparatus and method for screening and diagnosing trauma or disease in body tissues |
US5336388A (en) | 1991-12-26 | 1994-08-09 | Ppg Industries, Inc. | Analyte and pH measuring sensor assembly and method |
US5271815A (en) | 1991-12-26 | 1993-12-21 | Via Medical Corporation | Method for measuring glucose |
US5285792A (en) * | 1992-01-10 | 1994-02-15 | Physio-Control Corporation | System for producing prioritized alarm messages in a medical instrument |
US5246867A (en) | 1992-01-17 | 1993-09-21 | University Of Maryland At Baltimore | Determination and quantification of saccharides by luminescence lifetimes and energy transfer |
NL9200207A (en) | 1992-02-05 | 1993-09-01 | Nedap Nv | IMPLANTABLE BIOMEDICAL SENSOR DEVICE, IN PARTICULAR FOR MEASUREMENT OF THE GLUCOSE CONCENTRATION. |
US5278279A (en) * | 1992-03-11 | 1994-01-11 | Daicel Chemical Industries, Ltd. | Process for producing (co)polycarbonate with transesterification catalyst and compound |
EP0563795B1 (en) | 1992-03-31 | 1998-07-22 | Dai Nippon Printing Co., Ltd. | Enzyme-immobilized electrode, composition for preparation of the same and electrically conductive enzyme |
US5496772A (en) | 1992-04-07 | 1996-03-05 | Nissin Electric Co., Ltd. | Method of manufacturing film carrier type substrate |
US5324322A (en) | 1992-04-20 | 1994-06-28 | Case Western Reserve University | Thin film implantable electrode and method of manufacture |
US5711001A (en) * | 1992-05-08 | 1998-01-20 | Motorola, Inc. | Method and circuit for acquisition by a radio receiver |
GB9211402D0 (en) | 1992-05-29 | 1992-07-15 | Univ Manchester | Sensor devices |
US5421816A (en) | 1992-10-14 | 1995-06-06 | Endodermic Medical Technologies Company | Ultrasonic transdermal drug delivery system |
US5387327A (en) | 1992-10-19 | 1995-02-07 | Duquesne University Of The Holy Ghost | Implantable non-enzymatic electrochemical glucose sensor |
US5320098A (en) | 1992-10-20 | 1994-06-14 | Sun Microsystems, Inc. | Optical transdermal link |
WO1994010553A1 (en) * | 1992-10-23 | 1994-05-11 | Optex Biomedical, Inc. | Fibre-optic probe for the measurement of fluid parameters |
US5899855A (en) | 1992-11-17 | 1999-05-04 | Health Hero Network, Inc. | Modular microprocessor-based health monitoring system |
US5956501A (en) | 1997-01-10 | 1999-09-21 | Health Hero Network, Inc. | Disease simulation system and method |
ZA938555B (en) | 1992-11-23 | 1994-08-02 | Lilly Co Eli | Technique to improve the performance of electrochemical sensors |
DK148592D0 (en) | 1992-12-10 | 1992-12-10 | Novo Nordisk As | APPARATUS |
US5375604A (en) | 1992-12-11 | 1994-12-27 | Siemens Medical Electronics, Inc. | Transportable modular patient monitor |
FR2701117B1 (en) | 1993-02-04 | 1995-03-10 | Asulab Sa | Electrochemical measurement system with multizone sensor, and its application to glucose measurement. |
GB9304306D0 (en) * | 1993-03-03 | 1993-04-21 | Univ Alberta | Glucose sensor |
DE4318519C2 (en) | 1993-06-03 | 1996-11-28 | Fraunhofer Ges Forschung | Electrochemical sensor |
US5403462A (en) | 1993-06-24 | 1995-04-04 | Yissum Research Development Company Of The Hebrew Univeristy Of Jerusalem | Electrochemical electrodes and methods for the preparation thereof |
DE4329898A1 (en) | 1993-09-04 | 1995-04-06 | Marcus Dr Besson | Wireless medical diagnostic and monitoring device |
US5582184A (en) | 1993-10-13 | 1996-12-10 | Integ Incorporated | Interstitial fluid collection and constituent measurement |
US5512406A (en) * | 1993-10-14 | 1996-04-30 | Canon Kabushiki Kaisha | Toners of different size for electrophotography |
US5791344A (en) | 1993-11-19 | 1998-08-11 | Alfred E. Mann Foundation For Scientific Research | Patient monitoring system |
US5497772A (en) | 1993-11-19 | 1996-03-12 | Alfred E. Mann Foundation For Scientific Research | Glucose monitoring system |
US5589326A (en) | 1993-12-30 | 1996-12-31 | Boehringer Mannheim Corporation | Osmium-containing redox mediator |
DE4401400A1 (en) | 1994-01-19 | 1995-07-20 | Ernst Prof Dr Pfeiffer | Method and arrangement for continuously monitoring the concentration of a metabolite |
US5437999A (en) | 1994-02-22 | 1995-08-01 | Boehringer Mannheim Corporation | Electrochemical sensor |
US5391250A (en) | 1994-03-15 | 1995-02-21 | Minimed Inc. | Method of fabricating thin film sensors |
US5390671A (en) | 1994-03-15 | 1995-02-21 | Minimed Inc. | Transcutaneous sensor insertion set |
US5510583A (en) * | 1994-03-18 | 1996-04-23 | Eaton Corporation | Assembly for sequential switching |
US5569186A (en) | 1994-04-25 | 1996-10-29 | Minimed Inc. | Closed loop infusion pump system with removable glucose sensor |
JP3061351B2 (en) | 1994-04-25 | 2000-07-10 | 松下電器産業株式会社 | Method and apparatus for quantifying specific compounds |
DE4415896A1 (en) * | 1994-05-05 | 1995-11-09 | Boehringer Mannheim Gmbh | Analysis system for monitoring the concentration of an analyte in the blood of a patient |
US5545191A (en) | 1994-05-06 | 1996-08-13 | Alfred E. Mann Foundation For Scientific Research | Method for optimally positioning and securing the external unit of a transcutaneous transducer of the skin of a living body |
US5510581A (en) * | 1994-05-18 | 1996-04-23 | Angel; Shlomo | Mass-produced flat multiple-beam load cell and scales incorporating it |
GB9412789D0 (en) * | 1994-06-24 | 1994-08-17 | Environmental Sensors Ltd | Improvements to electrodes |
US5494562A (en) | 1994-06-27 | 1996-02-27 | Ciba Corning Diagnostics Corp. | Electrochemical sensors |
US5429735A (en) | 1994-06-27 | 1995-07-04 | Miles Inc. | Method of making and amperometric electrodes |
US5462051A (en) | 1994-08-31 | 1995-10-31 | Colin Corporation | Medical communication system |
IE72524B1 (en) | 1994-11-04 | 1997-04-23 | Elan Med Tech | Analyte-controlled liquid delivery device and analyte monitor |
US20050043596A1 (en) * | 1996-07-12 | 2005-02-24 | Non-Invasive Technology, Inc., A Delaware Corporation | Optical examination device, system and method |
US5586553A (en) | 1995-02-16 | 1996-12-24 | Minimed Inc. | Transcutaneous sensor insertion set |
US5568806A (en) | 1995-02-16 | 1996-10-29 | Minimed Inc. | Transcutaneous sensor insertion set |
US5651869A (en) | 1995-02-28 | 1997-07-29 | Matsushita Electric Industrial Co., Ltd. | Biosensor |
US5510584A (en) * | 1995-03-07 | 1996-04-23 | Itt Corporation | Sequentially operated snap action membrane switches |
US5596150A (en) | 1995-03-08 | 1997-01-21 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Capacitance probe for fluid flow and volume measurements |
JPH08247987A (en) | 1995-03-15 | 1996-09-27 | Omron Corp | Portable measuring instrument |
US5582697A (en) | 1995-03-17 | 1996-12-10 | Matsushita Electric Industrial Co., Ltd. | Biosensor, and a method and a device for quantifying a substrate in a sample liquid using the same |
US5882494A (en) | 1995-03-27 | 1999-03-16 | Minimed, Inc. | Polyurethane/polyurea compositions containing silicone for biosensor membranes |
US5628310A (en) | 1995-05-19 | 1997-05-13 | Joseph R. Lakowicz | Method and apparatus to perform trans-cutaneous analyte monitoring |
KR19990022369A (en) * | 1995-06-07 | 1999-03-25 | 스테판 이반스-프레크 | Compositions and Methods for Interfering Adapter Protein / Tyrosine Kinase Interactions |
US5567302A (en) | 1995-06-07 | 1996-10-22 | Molecular Devices Corporation | Electrochemical system for rapid detection of biochemical agents that catalyze a redox potential change |
US5743262A (en) | 1995-06-07 | 1998-04-28 | Masimo Corporation | Blood glucose monitoring system |
US5995860A (en) | 1995-07-06 | 1999-11-30 | Thomas Jefferson University | Implantable sensor and system for measurement and control of blood constituent levels |
DE19530376C2 (en) | 1995-08-18 | 1999-09-02 | Fresenius Ag | Biosensor |
US5682233A (en) | 1995-09-08 | 1997-10-28 | Integ, Inc. | Interstitial fluid sampler |
US5735273A (en) | 1995-09-12 | 1998-04-07 | Cygnus, Inc. | Chemical signal-impermeable mask |
US5628890A (en) | 1995-09-27 | 1997-05-13 | Medisense, Inc. | Electrochemical sensor |
US5972199A (en) | 1995-10-11 | 1999-10-26 | E. Heller & Company | Electrochemical analyte sensors using thermostable peroxidase |
US5741211A (en) | 1995-10-26 | 1998-04-21 | Medtronic, Inc. | System and method for continuous monitoring of diabetes-related blood constituents |
DE19541619A1 (en) | 1995-11-08 | 1997-05-15 | Bosch Gmbh Robert | Electrochemical sensor and method for producing an electrochemical sensor |
US5711861A (en) | 1995-11-22 | 1998-01-27 | Ward; W. Kenneth | Device for monitoring changes in analyte concentration |
US6428489B1 (en) | 1995-12-07 | 2002-08-06 | Precision Vascular Systems, Inc. | Guidewire system |
US5747669A (en) | 1995-12-28 | 1998-05-05 | Fujitsu Limited | Oxygen electrode and its manufacture |
US5917320A (en) | 1996-01-17 | 1999-06-29 | Allegro Microsystems, Inc. | Detection of passing magnetic articles while periodically adapting detection threshold |
FI118509B (en) | 1996-02-12 | 2007-12-14 | Nokia Oyj | A method and apparatus for predicting blood glucose levels in a patient |
US5708247A (en) | 1996-02-14 | 1998-01-13 | Selfcare, Inc. | Disposable glucose test strips, and methods and compositions for making same |
JP3028752U (en) | 1996-03-05 | 1996-09-13 | 株式会社オフィス・オートメーション・システム | Telepromotion system |
US5942443A (en) | 1996-06-28 | 1999-08-24 | Caliper Technologies Corporation | High throughput screening assay systems in microscale fluidic devices |
US5954685A (en) | 1996-05-24 | 1999-09-21 | Cygnus, Inc. | Electrochemical sensor with dual purpose electrode |
AU3373297A (en) | 1996-06-17 | 1998-01-07 | Mercury Diagnostics Inc. | Electrochemical test device and related methods |
US6230051B1 (en) * | 1996-06-18 | 2001-05-08 | Alza Corporation | Device for enhancing transdermal agent delivery or sampling |
JP3357247B2 (en) | 1996-08-23 | 2002-12-16 | アルプス電気株式会社 | Temperature sensing element and radiation sensor |
US5964993A (en) | 1996-12-19 | 1999-10-12 | Implanted Biosystems Inc. | Glucose sensor |
US5914026A (en) | 1997-01-06 | 1999-06-22 | Implanted Biosystems Inc. | Implantable sensor employing an auxiliary electrode |
US6122351A (en) | 1997-01-21 | 2000-09-19 | Med Graph, Inc. | Method and system aiding medical diagnosis and treatment |
US6093172A (en) | 1997-02-05 | 2000-07-25 | Minimed Inc. | Injector for a subcutaneous insertion set |
US6862465B2 (en) * | 1997-03-04 | 2005-03-01 | Dexcom, Inc. | Device and method for determining analyte levels |
US7899511B2 (en) | 2004-07-13 | 2011-03-01 | Dexcom, Inc. | Low oxygen in vivo analyte sensor |
US7192450B2 (en) | 2003-05-21 | 2007-03-20 | Dexcom, Inc. | Porous membranes for use with implantable devices |
US6001067A (en) | 1997-03-04 | 1999-12-14 | Shults; Mark C. | Device and method for determining analyte levels |
US20050033132A1 (en) | 1997-03-04 | 2005-02-10 | Shults Mark C. | Analyte measuring device |
US7657297B2 (en) | 2004-05-03 | 2010-02-02 | Dexcom, Inc. | Implantable analyte sensor |
US6558321B1 (en) | 1997-03-04 | 2003-05-06 | Dexcom, Inc. | Systems and methods for remote monitoring and modulation of medical devices |
US6741877B1 (en) | 1997-03-04 | 2004-05-25 | Dexcom, Inc. | Device and method for determining analyte levels |
US6059946A (en) | 1997-04-14 | 2000-05-09 | Matsushita Electric Industrial Co., Ltd. | Biosensor |
US5759364A (en) | 1997-05-02 | 1998-06-02 | Bayer Corporation | Electrochemical biosensor |
JP2002505008A (en) | 1997-06-16 | 2002-02-12 | エラン コーポレーション ピーエルシー | Methods for calibrating and testing sensors for in vivo measurement of analytes and devices for use in such methods |
US6336845B1 (en) * | 1997-11-12 | 2002-01-08 | Lam Research Corporation | Method and apparatus for polishing semiconductor wafers |
US6579690B1 (en) | 1997-12-05 | 2003-06-17 | Therasense, Inc. | Blood analyte monitoring through subcutaneous measurement |
US6074725A (en) | 1997-12-10 | 2000-06-13 | Caliper Technologies Corp. | Fabrication of microfluidic circuits by printing techniques |
US6134461A (en) | 1998-03-04 | 2000-10-17 | E. Heller & Company | Electrochemical analyte |
US6024699A (en) * | 1998-03-13 | 2000-02-15 | Healthware Corporation | Systems, methods and computer program products for monitoring, diagnosing and treating medical conditions of remotely located patients |
US6175752B1 (en) * | 1998-04-30 | 2001-01-16 | Therasense, Inc. | Analyte monitoring device and methods of use |
JP2000077477A (en) | 1998-09-02 | 2000-03-14 | Shinko Electric Ind Co Ltd | Semiconductor device, its manufacture, and metallic substrate used therefor |
US6366794B1 (en) * | 1998-11-20 | 2002-04-02 | The University Of Connecticut | Generic integrated implantable potentiostat telemetry unit for electrochemical sensors |
US6360888B1 (en) * | 1999-02-25 | 2002-03-26 | Minimed Inc. | Glucose sensor package system |
US6285897B1 (en) * | 1999-04-07 | 2001-09-04 | Endonetics, Inc. | Remote physiological monitoring system |
US6669663B1 (en) | 1999-04-30 | 2003-12-30 | Medtronic, Inc. | Closed loop medicament pump |
US6564105B2 (en) | 2000-01-21 | 2003-05-13 | Medtronic Minimed, Inc. | Method and apparatus for communicating between an ambulatory medical device and a control device via telemetry using randomized data |
US6753143B2 (en) * | 2000-05-01 | 2004-06-22 | Clinical Micro Sensors, Inc. | Target analyte detection using asymmetrical self-assembled monolayers |
JP4001551B2 (en) | 2000-12-12 | 2007-10-31 | ミニ−ミッター カンパニー,インコーポレイテッド | Thermometer and thermometer manufacturing method |
US20030032874A1 (en) * | 2001-07-27 | 2003-02-13 | Dexcom, Inc. | Sensor head for use with implantable devices |
US6702857B2 (en) | 2001-07-27 | 2004-03-09 | Dexcom, Inc. | Membrane for use with implantable devices |
US8010174B2 (en) | 2003-08-22 | 2011-08-30 | Dexcom, Inc. | Systems and methods for replacing signal artifacts in a glucose sensor data stream |
US8260393B2 (en) * | 2003-07-25 | 2012-09-04 | Dexcom, Inc. | Systems and methods for replacing signal data artifacts in a glucose sensor data stream |
US8364229B2 (en) | 2003-07-25 | 2013-01-29 | Dexcom, Inc. | Analyte sensors having a signal-to-noise ratio substantially unaffected by non-constant noise |
US9282925B2 (en) | 2002-02-12 | 2016-03-15 | Dexcom, Inc. | Systems and methods for replacing signal artifacts in a glucose sensor data stream |
US7613491B2 (en) | 2002-05-22 | 2009-11-03 | Dexcom, Inc. | Silicone based membranes for use in implantable glucose sensors |
US7226978B2 (en) | 2002-05-22 | 2007-06-05 | Dexcom, Inc. | Techniques to improve polyurethane membranes for implantable glucose sensors |
US7134999B2 (en) | 2003-04-04 | 2006-11-14 | Dexcom, Inc. | Optimized sensor geometry for an implantable glucose sensor |
US7875293B2 (en) * | 2003-05-21 | 2011-01-25 | Dexcom, Inc. | Biointerface membranes incorporating bioactive agents |
US7460898B2 (en) | 2003-12-05 | 2008-12-02 | Dexcom, Inc. | Dual electrode system for a continuous analyte sensor |
US20050176136A1 (en) | 2003-11-19 | 2005-08-11 | Dexcom, Inc. | Afinity domain for analyte sensor |
US8423113B2 (en) | 2003-07-25 | 2013-04-16 | Dexcom, Inc. | Systems and methods for processing sensor data |
US7424318B2 (en) | 2003-12-05 | 2008-09-09 | Dexcom, Inc. | Dual electrode system for a continuous analyte sensor |
US7651596B2 (en) * | 2005-04-08 | 2010-01-26 | Dexcom, Inc. | Cellulosic-based interference domain for an analyte sensor |
JP4708342B2 (en) | 2003-07-25 | 2011-06-22 | デックスコム・インコーポレーテッド | Oxygen augmentation membrane system for use in implantable devices |
US7108778B2 (en) | 2003-07-25 | 2006-09-19 | Dexcom, Inc. | Electrochemical sensors including electrode systems with increased oxygen generation |
WO2007120442A2 (en) | 2003-07-25 | 2007-10-25 | Dexcom, Inc. | Dual electrode system for a continuous analyte sensor |
US7467003B2 (en) | 2003-12-05 | 2008-12-16 | Dexcom, Inc. | Dual electrode system for a continuous analyte sensor |
US7074307B2 (en) | 2003-07-25 | 2006-07-11 | Dexcom, Inc. | Electrode systems for electrochemical sensors |
US7366556B2 (en) | 2003-12-05 | 2008-04-29 | Dexcom, Inc. | Dual electrode system for a continuous analyte sensor |
US7933639B2 (en) | 2003-08-01 | 2011-04-26 | Dexcom, Inc. | System and methods for processing analyte sensor data |
US20070208245A1 (en) | 2003-08-01 | 2007-09-06 | Brauker James H | Transcutaneous analyte sensor |
US7591801B2 (en) | 2004-02-26 | 2009-09-22 | Dexcom, Inc. | Integrated delivery device for continuous glucose sensor |
US8626257B2 (en) | 2003-08-01 | 2014-01-07 | Dexcom, Inc. | Analyte sensor |
US8369919B2 (en) | 2003-08-01 | 2013-02-05 | Dexcom, Inc. | Systems and methods for processing sensor data |
US8622905B2 (en) | 2003-08-01 | 2014-01-07 | Dexcom, Inc. | System and methods for processing analyte sensor data |
US8845536B2 (en) | 2003-08-01 | 2014-09-30 | Dexcom, Inc. | Transcutaneous analyte sensor |
US8275437B2 (en) | 2003-08-01 | 2012-09-25 | Dexcom, Inc. | Transcutaneous analyte sensor |
US8886273B2 (en) | 2003-08-01 | 2014-11-11 | Dexcom, Inc. | Analyte sensor |
US8060173B2 (en) | 2003-08-01 | 2011-11-15 | Dexcom, Inc. | System and methods for processing analyte sensor data |
US9135402B2 (en) | 2007-12-17 | 2015-09-15 | Dexcom, Inc. | Systems and methods for processing sensor data |
US7519408B2 (en) | 2003-11-19 | 2009-04-14 | Dexcom, Inc. | Integrated receiver for continuous analyte sensor |
US7774145B2 (en) | 2003-08-01 | 2010-08-10 | Dexcom, Inc. | Transcutaneous analyte sensor |
US20080119703A1 (en) | 2006-10-04 | 2008-05-22 | Mark Brister | Analyte sensor |
US8160669B2 (en) | 2003-08-01 | 2012-04-17 | Dexcom, Inc. | Transcutaneous analyte sensor |
US7920906B2 (en) | 2005-03-10 | 2011-04-05 | Dexcom, Inc. | System and methods for processing analyte sensor data for sensor calibration |
US8233959B2 (en) * | 2003-08-22 | 2012-07-31 | Dexcom, Inc. | Systems and methods for processing analyte sensor data |
US20050090607A1 (en) | 2003-10-28 | 2005-04-28 | Dexcom, Inc. | Silicone composition for biocompatible membrane |
US8615282B2 (en) | 2004-07-13 | 2013-12-24 | Dexcom, Inc. | Analyte sensor |
US8364231B2 (en) * | 2006-10-04 | 2013-01-29 | Dexcom, Inc. | Analyte sensor |
US20080197024A1 (en) | 2003-12-05 | 2008-08-21 | Dexcom, Inc. | Analyte sensor |
US8287453B2 (en) | 2003-12-05 | 2012-10-16 | Dexcom, Inc. | Analyte sensor |
US8425416B2 (en) | 2006-10-04 | 2013-04-23 | Dexcom, Inc. | Analyte sensor |
US8423114B2 (en) | 2006-10-04 | 2013-04-16 | Dexcom, Inc. | Dual electrode system for a continuous analyte sensor |
US8425417B2 (en) | 2003-12-05 | 2013-04-23 | Dexcom, Inc. | Integrated device for continuous in vivo analyte detection and simultaneous control of an infusion device |
EP1711790B1 (en) | 2003-12-05 | 2010-09-08 | DexCom, Inc. | Calibration techniques for a continuous analyte sensor |
US20100185071A1 (en) | 2003-12-05 | 2010-07-22 | Dexcom, Inc. | Dual electrode system for a continuous analyte sensor |
US8364230B2 (en) | 2006-10-04 | 2013-01-29 | Dexcom, Inc. | Analyte sensor |
US20080200788A1 (en) | 2006-10-04 | 2008-08-21 | Dexcorn, Inc. | Analyte sensor |
EP2228642B1 (en) | 2003-12-08 | 2017-07-19 | DexCom, Inc. | Systems and methods for improving electrochemical analyte sensors |
EP2316331B1 (en) | 2003-12-09 | 2016-06-29 | Dexcom, Inc. | Signal processing for continuous analyte sensor |
US7637868B2 (en) | 2004-01-12 | 2009-12-29 | Dexcom, Inc. | Composite material for implantable device |
WO2005079257A2 (en) | 2004-02-12 | 2005-09-01 | Dexcom, Inc. | Biointerface with macro- and micro- architecture |
US8808228B2 (en) | 2004-02-26 | 2014-08-19 | Dexcom, Inc. | Integrated medicament delivery device for use with continuous analyte sensor |
US20050245799A1 (en) | 2004-05-03 | 2005-11-03 | Dexcom, Inc. | Implantable analyte sensor |
US8277713B2 (en) * | 2004-05-03 | 2012-10-02 | Dexcom, Inc. | Implantable analyte sensor |
US20060015020A1 (en) * | 2004-07-06 | 2006-01-19 | Dexcom, Inc. | Systems and methods for manufacture of an analyte-measuring device including a membrane system |
US20080242961A1 (en) | 2004-07-13 | 2008-10-02 | Dexcom, Inc. | Transcutaneous analyte sensor |
US8452368B2 (en) | 2004-07-13 | 2013-05-28 | Dexcom, Inc. | Transcutaneous analyte sensor |
US20060016700A1 (en) * | 2004-07-13 | 2006-01-26 | Dexcom, Inc. | Transcutaneous analyte sensor |
US8565848B2 (en) | 2004-07-13 | 2013-10-22 | Dexcom, Inc. | Transcutaneous analyte sensor |
US7783333B2 (en) | 2004-07-13 | 2010-08-24 | Dexcom, Inc. | Transcutaneous medical device with variable stiffness |
WO2006127694A2 (en) * | 2004-07-13 | 2006-11-30 | Dexcom, Inc. | Analyte sensor |
US7654956B2 (en) | 2004-07-13 | 2010-02-02 | Dexcom, Inc. | Transcutaneous analyte sensor |
JP5072171B2 (en) | 2004-09-03 | 2012-11-14 | エスケー化研株式会社 | Interior paint composition |
US20090076360A1 (en) | 2007-09-13 | 2009-03-19 | Dexcom, Inc. | Transcutaneous analyte sensor |
US8449464B2 (en) | 2006-10-04 | 2013-05-28 | Dexcom, Inc. | Analyte sensor |
US8562528B2 (en) | 2006-10-04 | 2013-10-22 | Dexcom, Inc. | Analyte sensor |
US7831287B2 (en) | 2006-10-04 | 2010-11-09 | Dexcom, Inc. | Dual electrode system for a continuous analyte sensor |
US8478377B2 (en) | 2006-10-04 | 2013-07-02 | Dexcom, Inc. | Analyte sensor |
US8298142B2 (en) | 2006-10-04 | 2012-10-30 | Dexcom, Inc. | Analyte sensor |
US8275438B2 (en) | 2006-10-04 | 2012-09-25 | Dexcom, Inc. | Analyte sensor |
US8447376B2 (en) | 2006-10-04 | 2013-05-21 | Dexcom, Inc. | Analyte sensor |
US20080306434A1 (en) | 2007-06-08 | 2008-12-11 | Dexcom, Inc. | Integrated medicament delivery device for use with continuous analyte sensor |
US8417312B2 (en) | 2007-10-25 | 2013-04-09 | Dexcom, Inc. | Systems and methods for processing sensor data |
US8290559B2 (en) | 2007-12-17 | 2012-10-16 | Dexcom, Inc. | Systems and methods for processing sensor data |
US20090299155A1 (en) | 2008-01-30 | 2009-12-03 | Dexcom, Inc. | Continuous cardiac marker sensor system |
WO2009105337A2 (en) | 2008-02-20 | 2009-08-27 | Dexcom, Inc. | Continuous medicament sensor system for in vivo use |
CA2715628A1 (en) | 2008-02-21 | 2009-08-27 | Dexcom, Inc. | Systems and methods for processing, transmitting and displaying sensor data |
US20090242399A1 (en) | 2008-03-25 | 2009-10-01 | Dexcom, Inc. | Analyte sensor |
US8396528B2 (en) | 2008-03-25 | 2013-03-12 | Dexcom, Inc. | Analyte sensor |
US20090247856A1 (en) | 2008-03-28 | 2009-10-01 | Dexcom, Inc. | Polymer membranes for continuous analyte sensors |
WO2010033724A2 (en) | 2008-09-19 | 2010-03-25 | Dexcom, Inc. | Particle-containing membrane and particulate electrode for analyte sensors |
JP5196595B2 (en) | 2010-03-15 | 2013-05-15 | Necアクセステクニカ株式会社 | Optical signal redundancy system, optical signal distribution device, and optical signal redundancy method |
-
1994
- 1994-09-01 US US08/299,526 patent/US5593852A/en not_active Expired - Lifetime
-
1995
- 1995-09-01 EP EP95931676A patent/EP0778897B1/en not_active Expired - Lifetime
- 1995-09-01 ES ES95931676T patent/ES2225845T3/en not_active Expired - Lifetime
- 1995-09-01 WO PCT/US1995/011137 patent/WO1996006947A1/en active IP Right Grant
- 1995-09-01 AU AU35016/95A patent/AU3501695A/en not_active Abandoned
- 1995-09-01 DE DE69533260T patent/DE69533260T2/en not_active Expired - Lifetime
- 1995-09-01 JP JP50898196A patent/JP3679121B2/en not_active Expired - Lifetime
-
1996
- 1996-12-04 US US08/767,110 patent/US6284478B1/en not_active Expired - Lifetime
-
1999
- 1999-01-12 US US09/229,235 patent/US5965380A/en not_active Expired - Lifetime
- 1999-06-16 US US09/334,480 patent/US6083710A/en not_active Expired - Lifetime
- 1999-07-16 US US09/356,102 patent/US6121009A/en not_active Expired - Lifetime
-
2000
- 2000-01-03 US US09/477,053 patent/US6162611A/en not_active Expired - Lifetime
- 2000-09-22 US US09/668,221 patent/US6329161B1/en not_active Expired - Lifetime
-
2001
- 2001-11-29 US US09/997,808 patent/US6514718B2/en not_active Expired - Fee Related
-
2003
- 2003-01-28 US US10/353,341 patent/US6881551B2/en not_active Expired - Fee Related
-
2005
- 2005-04-19 US US11/109,379 patent/US20050287620A1/en not_active Abandoned
- 2005-07-15 US US11/182,634 patent/US7462264B2/en not_active Expired - Fee Related
-
2007
- 2007-03-02 US US11/681,713 patent/US8588881B2/en not_active Expired - Fee Related
- 2007-04-03 US US11/695,611 patent/US20070218097A1/en not_active Abandoned
- 2007-04-03 US US11/695,612 patent/US8741590B2/en not_active Expired - Fee Related
-
2009
- 2009-08-31 US US12/551,480 patent/US20100059370A1/en not_active Abandoned
- 2009-08-31 US US12/551,265 patent/US20100030046A1/en not_active Abandoned
- 2009-08-31 US US12/551,504 patent/US20100059373A1/en not_active Abandoned
- 2009-08-31 US US12/551,497 patent/US20100059372A1/en not_active Abandoned
- 2009-08-31 US US12/551,222 patent/US20100121166A1/en not_active Abandoned
- 2009-08-31 US US12/551,411 patent/US20100030047A1/en not_active Abandoned
- 2009-08-31 US US12/551,192 patent/US20100121165A1/en not_active Abandoned
- 2009-08-31 US US12/551,283 patent/US20100030044A1/en not_active Abandoned
- 2009-08-31 US US12/551,513 patent/US20100072064A1/en not_active Abandoned
- 2009-08-31 US US12/551,419 patent/US20100030048A1/en not_active Abandoned
- 2009-08-31 US US12/551,439 patent/US20100030050A1/en not_active Abandoned
- 2009-08-31 US US12/551,427 patent/US20100030049A1/en not_active Abandoned
- 2009-08-31 US US12/551,510 patent/US20100072063A1/en not_active Abandoned
- 2009-08-31 US US12/551,491 patent/US20100059371A1/en not_active Abandoned
- 2009-08-31 US US12/551,448 patent/US20100030051A1/en not_active Abandoned
- 2009-11-09 US US12/615,009 patent/US20100051479A1/en not_active Abandoned
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4699157A (en) * | 1985-08-27 | 1987-10-13 | Electro-Catheter Corporation | Pacing catheter and method of making same |
US4986271A (en) * | 1989-07-19 | 1991-01-22 | The University Of New Mexico | Vivo refillable glucose sensor |
US5103816A (en) * | 1989-09-11 | 1992-04-14 | Biomedical Device Consultants, Inc. | Composite for use in making protective articles for use in laser surgery |
US5122244A (en) * | 1990-02-03 | 1992-06-16 | Boehringer Mannheim Gmbh | Method and sensor electrode system for the electrochemical determination of an analyte or an oxidoreductase as well as the use of suitable compounds therefor |
US5525511A (en) * | 1990-09-01 | 1996-06-11 | Environmental & Medical Products Ltd. | Electrochemical biosensor stability |
US6060176A (en) * | 1995-11-30 | 2000-05-09 | International Business Machines Corporation | Corrosion protection for metallic features |
US5776324A (en) * | 1996-05-17 | 1998-07-07 | Encelle, Inc. | Electrochemical biosensors |
US5696314A (en) * | 1996-07-12 | 1997-12-09 | Chiron Diagnostics Corporation | Multilayer enzyme electrode membranes and methods of making same |
US6387048B1 (en) * | 1997-10-20 | 2002-05-14 | Alfred E. Mann Foundation | Implantable sensor and integrity tests therefor |
US20070042377A1 (en) * | 2003-10-29 | 2007-02-22 | Zhiqiang Gao | Biosensor |
US20050215871A1 (en) * | 2004-02-09 | 2005-09-29 | Feldman Benjamin J | Analyte sensor, and associated system and method employing a catalytic agent |
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---|---|---|---|---|
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US7970448B2 (en) | 1997-03-04 | 2011-06-28 | Dexcom, Inc. | Device and method for determining analyte levels |
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US8676288B2 (en) | 1997-03-04 | 2014-03-18 | Dexcom, Inc. | Device and method for determining analyte levels |
US7792562B2 (en) | 1997-03-04 | 2010-09-07 | Dexcom, Inc. | Device and method for determining analyte levels |
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US7835777B2 (en) | 1997-03-04 | 2010-11-16 | Dexcom, Inc. | Device and method for determining analyte levels |
US7974672B2 (en) | 1997-03-04 | 2011-07-05 | Dexcom, Inc. | Device and method for determining analyte levels |
US8706180B2 (en) | 1998-03-04 | 2014-04-22 | Abbott Diabetes Care Inc. | Electrochemical analyte sensor |
US8463351B2 (en) | 1998-03-04 | 2013-06-11 | Abbott Diabetes Care Inc. | Electrochemical analyte sensor |
US7996054B2 (en) | 1998-03-04 | 2011-08-09 | Abbott Diabetes Care Inc. | Electrochemical analyte sensor |
US9072477B2 (en) | 1998-04-30 | 2015-07-07 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US8744545B2 (en) | 1998-04-30 | 2014-06-03 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US8597189B2 (en) | 1998-04-30 | 2013-12-03 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US8612159B2 (en) | 1998-04-30 | 2013-12-17 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US9326714B2 (en) | 1998-04-30 | 2016-05-03 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US7869853B1 (en) | 1998-04-30 | 2011-01-11 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US8480580B2 (en) | 1998-04-30 | 2013-07-09 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US8617071B2 (en) | 1998-04-30 | 2013-12-31 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
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US9011331B2 (en) | 1998-04-30 | 2015-04-21 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US8162829B2 (en) | 1998-04-30 | 2012-04-24 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US8175673B2 (en) | 1998-04-30 | 2012-05-08 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US8177716B2 (en) | 1998-04-30 | 2012-05-15 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US8974386B2 (en) | 1998-04-30 | 2015-03-10 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US8465425B2 (en) | 1998-04-30 | 2013-06-18 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US8224413B2 (en) | 1998-04-30 | 2012-07-17 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US8226557B2 (en) | 1998-04-30 | 2012-07-24 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
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US8880137B2 (en) | 1998-04-30 | 2014-11-04 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US8226555B2 (en) | 1998-04-30 | 2012-07-24 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US8231532B2 (en) | 1998-04-30 | 2012-07-31 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US8235896B2 (en) | 1998-04-30 | 2012-08-07 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US8641619B2 (en) | 1998-04-30 | 2014-02-04 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
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US8774887B2 (en) | 1998-04-30 | 2014-07-08 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US8255031B2 (en) | 1998-04-30 | 2012-08-28 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US7860544B2 (en) | 1998-04-30 | 2010-12-28 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US8260392B2 (en) | 1998-04-30 | 2012-09-04 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US8265726B2 (en) | 1998-04-30 | 2012-09-11 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US8649841B2 (en) | 1998-04-30 | 2014-02-11 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US7885699B2 (en) | 1998-04-30 | 2011-02-08 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US8273022B2 (en) | 1998-04-30 | 2012-09-25 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US8275439B2 (en) | 1998-04-30 | 2012-09-25 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US8738109B2 (en) | 1998-04-30 | 2014-05-27 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US8287454B2 (en) | 1998-04-30 | 2012-10-16 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US8734348B2 (en) | 1998-04-30 | 2014-05-27 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US8306598B2 (en) | 1998-04-30 | 2012-11-06 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US8346337B2 (en) | 1998-04-30 | 2013-01-01 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US8346336B2 (en) | 1998-04-30 | 2013-01-01 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US8353829B2 (en) | 1998-04-30 | 2013-01-15 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US8357091B2 (en) | 1998-04-30 | 2013-01-22 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US8734346B2 (en) | 1998-04-30 | 2014-05-27 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US8688188B2 (en) | 1998-04-30 | 2014-04-01 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US8672844B2 (en) | 1998-04-30 | 2014-03-18 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US10478108B2 (en) | 1998-04-30 | 2019-11-19 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US8366614B2 (en) | 1998-04-30 | 2013-02-05 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US8372005B2 (en) | 1998-04-30 | 2013-02-12 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US8380273B2 (en) | 1998-04-30 | 2013-02-19 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US8391945B2 (en) | 1998-04-30 | 2013-03-05 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US8670815B2 (en) | 1998-04-30 | 2014-03-11 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US8409131B2 (en) | 1998-04-30 | 2013-04-02 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US8666469B2 (en) | 1998-04-30 | 2014-03-04 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US8660627B2 (en) | 1998-04-30 | 2014-02-25 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US9011332B2 (en) | 2001-01-02 | 2015-04-21 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US8652043B2 (en) | 2001-01-02 | 2014-02-18 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US9498159B2 (en) | 2001-01-02 | 2016-11-22 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US8668645B2 (en) | 2001-01-02 | 2014-03-11 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US9610034B2 (en) | 2001-01-02 | 2017-04-04 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US8765059B2 (en) | 2001-04-02 | 2014-07-01 | Abbott Diabetes Care Inc. | Blood glucose tracking apparatus |
US8236242B2 (en) | 2001-04-02 | 2012-08-07 | Abbott Diabetes Care Inc. | Blood glucose tracking apparatus and methods |
US8268243B2 (en) | 2001-04-02 | 2012-09-18 | Abbott Diabetes Care Inc. | Blood glucose tracking apparatus and methods |
US7976778B2 (en) | 2001-04-02 | 2011-07-12 | Abbott Diabetes Care Inc. | Blood glucose tracking apparatus |
US9477811B2 (en) | 2001-04-02 | 2016-10-25 | Abbott Diabetes Care Inc. | Blood glucose tracking apparatus and methods |
US9804114B2 (en) | 2001-07-27 | 2017-10-31 | Dexcom, Inc. | Sensor head for use with implantable devices |
US8509871B2 (en) | 2001-07-27 | 2013-08-13 | Dexcom, Inc. | Sensor head for use with implantable devices |
US9328371B2 (en) | 2001-07-27 | 2016-05-03 | Dexcom, Inc. | Sensor head for use with implantable devices |
US10052051B2 (en) | 2002-05-22 | 2018-08-21 | Dexcom, Inc. | Silicone based membranes for use in implantable glucose sensors |
US8543184B2 (en) | 2002-05-22 | 2013-09-24 | Dexcom, Inc. | Silicone based membranes for use in implantable glucose sensors |
US11020026B2 (en) | 2002-05-22 | 2021-06-01 | Dexcom, Inc. | Silicone based membranes for use in implantable glucose sensors |
US9549693B2 (en) | 2002-05-22 | 2017-01-24 | Dexcom, Inc. | Silicone based membranes for use in implantable glucose sensors |
US9179869B2 (en) | 2002-05-22 | 2015-11-10 | Dexcom, Inc. | Techniques to improve polyurethane membranes for implantable glucose sensors |
US10154807B2 (en) | 2002-05-22 | 2018-12-18 | Dexcom, Inc. | Techniques to improve polyurethane membranes for implantable glucose sensors |
US8050731B2 (en) | 2002-05-22 | 2011-11-01 | Dexcom, Inc. | Techniques to improve polyurethane membranes for implantable glucose sensors |
US8053018B2 (en) | 2002-05-22 | 2011-11-08 | Dexcom, Inc. | Techniques to improve polyurethane membranes for implantable glucose sensors |
US8064977B2 (en) | 2002-05-22 | 2011-11-22 | Dexcom, Inc. | Silicone based membranes for use in implantable glucose sensors |
US9801574B2 (en) | 2002-05-22 | 2017-10-31 | Dexcom, Inc. | Techniques to improve polyurethane membranes for implantable glucose sensors |
US8865249B2 (en) | 2002-05-22 | 2014-10-21 | Dexcom, Inc. | Techniques to improve polyurethane membranes for implantable glucose sensors |
US9962091B2 (en) | 2002-12-31 | 2018-05-08 | Abbott Diabetes Care Inc. | Continuous glucose monitoring system and methods of use |
US8187183B2 (en) | 2002-12-31 | 2012-05-29 | Abbott Diabetes Care Inc. | Continuous glucose monitoring system and methods of use |
US8622903B2 (en) | 2002-12-31 | 2014-01-07 | Abbott Diabetes Care Inc. | Continuous glucose monitoring system and methods of use |
US10039881B2 (en) | 2002-12-31 | 2018-08-07 | Abbott Diabetes Care Inc. | Method and system for providing data communication in continuous glucose monitoring and management system |
US7811231B2 (en) | 2002-12-31 | 2010-10-12 | Abbott Diabetes Care Inc. | Continuous glucose monitoring system and methods of use |
US10750952B2 (en) | 2002-12-31 | 2020-08-25 | Abbott Diabetes Care Inc. | Continuous glucose monitoring system and methods of use |
US8512239B2 (en) | 2003-06-10 | 2013-08-20 | Abbott Diabetes Care Inc. | Glucose measuring device for use in personal area network |
US9730584B2 (en) | 2003-06-10 | 2017-08-15 | Abbott Diabetes Care Inc. | Glucose measuring device for use in personal area network |
US8066639B2 (en) | 2003-06-10 | 2011-11-29 | Abbott Diabetes Care Inc. | Glucose measuring device for use in personal area network |
US8647269B2 (en) | 2003-06-10 | 2014-02-11 | Abbott Diabetes Care Inc. | Glucose measuring device for use in personal area network |
US8255033B2 (en) | 2003-07-25 | 2012-08-28 | Dexcom, Inc. | Oxygen enhancing membrane systems for implantable devices |
US8364229B2 (en) | 2003-07-25 | 2013-01-29 | Dexcom, Inc. | Analyte sensors having a signal-to-noise ratio substantially unaffected by non-constant noise |
US7761130B2 (en) | 2003-07-25 | 2010-07-20 | Dexcom, Inc. | Dual electrode system for a continuous analyte sensor |
US7828728B2 (en) | 2003-07-25 | 2010-11-09 | Dexcom, Inc. | Analyte sensor |
US8255032B2 (en) | 2003-07-25 | 2012-08-28 | Dexcom, Inc. | Oxygen enhancing membrane systems for implantable devices |
US9763609B2 (en) | 2003-07-25 | 2017-09-19 | Dexcom, Inc. | Analyte sensors having a signal-to-noise ratio substantially unaffected by non-constant noise |
US9597027B2 (en) | 2003-07-25 | 2017-03-21 | Dexcom, Inc. | Oxygen enhancing membrane systems for implantable devices |
US10376143B2 (en) | 2003-07-25 | 2019-08-13 | Dexcom, Inc. | Analyte sensors having a signal-to-noise ratio substantially unaffected by non-constant noise |
US9993186B2 (en) | 2003-07-25 | 2018-06-12 | Dexcom, Inc. | Oxygen enhancing membrane systems for implantable devices |
US8909314B2 (en) | 2003-07-25 | 2014-12-09 | Dexcom, Inc. | Oxygen enhancing membrane systems for implantable devices |
US8255030B2 (en) | 2003-07-25 | 2012-08-28 | Dexcom, Inc. | Oxygen enhancing membrane systems for implantable devices |
USRE43399E1 (en) | 2003-07-25 | 2012-05-22 | Dexcom, Inc. | Electrode systems for electrochemical sensors |
US10610140B2 (en) | 2003-07-25 | 2020-04-07 | Dexcom, Inc. | Oxygen enhancing membrane systems for implantable devices |
US8886273B2 (en) | 2003-08-01 | 2014-11-11 | Dexcom, Inc. | Analyte sensor |
US8626257B2 (en) | 2003-08-01 | 2014-01-07 | Dexcom, Inc. | Analyte sensor |
US10052055B2 (en) | 2003-08-01 | 2018-08-21 | Dexcom, Inc. | Analyte sensor |
US11020031B1 (en) | 2003-12-05 | 2021-06-01 | Dexcom, Inc. | Analyte sensor |
US8929968B2 (en) | 2003-12-05 | 2015-01-06 | Dexcom, Inc. | Dual electrode system for a continuous analyte sensor |
US11000215B1 (en) | 2003-12-05 | 2021-05-11 | Dexcom, Inc. | Analyte sensor |
US10188333B2 (en) | 2003-12-05 | 2019-01-29 | Dexcom, Inc. | Calibration techniques for a continuous analyte sensor |
US11633133B2 (en) | 2003-12-05 | 2023-04-25 | Dexcom, Inc. | Dual electrode system for a continuous analyte sensor |
US8425417B2 (en) | 2003-12-05 | 2013-04-23 | Dexcom, Inc. | Integrated device for continuous in vivo analyte detection and simultaneous control of an infusion device |
US8771183B2 (en) | 2004-02-17 | 2014-07-08 | Abbott Diabetes Care Inc. | Method and system for providing data communication in continuous glucose monitoring and management system |
US10966609B2 (en) | 2004-02-26 | 2021-04-06 | Dexcom, Inc. | Integrated medicament delivery device for use with continuous analyte sensor |
US11246990B2 (en) | 2004-02-26 | 2022-02-15 | Dexcom, Inc. | Integrated delivery device for continuous glucose sensor |
US10835672B2 (en) | 2004-02-26 | 2020-11-17 | Dexcom, Inc. | Integrated insulin delivery system with continuous glucose sensor |
US8277713B2 (en) | 2004-05-03 | 2012-10-02 | Dexcom, Inc. | Implantable analyte sensor |
US10932700B2 (en) | 2004-07-13 | 2021-03-02 | Dexcom, Inc. | Analyte sensor |
US10980452B2 (en) | 2004-07-13 | 2021-04-20 | Dexcom, Inc. | Analyte sensor |
US9414777B2 (en) | 2004-07-13 | 2016-08-16 | Dexcom, Inc. | Transcutaneous analyte sensor |
US10993641B2 (en) | 2004-07-13 | 2021-05-04 | Dexcom, Inc. | Analyte sensor |
US8792953B2 (en) | 2004-07-13 | 2014-07-29 | Dexcom, Inc. | Transcutaneous analyte sensor |
US10993642B2 (en) | 2004-07-13 | 2021-05-04 | Dexcom, Inc. | Analyte sensor |
US10709363B2 (en) | 2004-07-13 | 2020-07-14 | Dexcom, Inc. | Analyte sensor |
US10918313B2 (en) | 2004-07-13 | 2021-02-16 | Dexcom, Inc. | Analyte sensor |
US10918315B2 (en) | 2004-07-13 | 2021-02-16 | Dexcom, Inc. | Analyte sensor |
US10918314B2 (en) | 2004-07-13 | 2021-02-16 | Dexcom, Inc. | Analyte sensor |
US7885697B2 (en) | 2004-07-13 | 2011-02-08 | Dexcom, Inc. | Transcutaneous analyte sensor |
US7857760B2 (en) | 2004-07-13 | 2010-12-28 | Dexcom, Inc. | Analyte sensor |
US10813576B2 (en) | 2004-07-13 | 2020-10-27 | Dexcom, Inc. | Analyte sensor |
US10722152B2 (en) | 2004-07-13 | 2020-07-28 | Dexcom, Inc. | Analyte sensor |
US10799158B2 (en) | 2004-07-13 | 2020-10-13 | Dexcom, Inc. | Analyte sensor |
US10799159B2 (en) | 2004-07-13 | 2020-10-13 | Dexcom, Inc. | Analyte sensor |
US11026605B1 (en) | 2004-07-13 | 2021-06-08 | Dexcom, Inc. | Analyte sensor |
US10709362B2 (en) | 2004-07-13 | 2020-07-14 | Dexcom, Inc. | Analyte sensor |
US11045120B2 (en) | 2004-07-13 | 2021-06-29 | Dexcom, Inc. | Analyte sensor |
US9986942B2 (en) | 2004-07-13 | 2018-06-05 | Dexcom, Inc. | Analyte sensor |
US10827956B2 (en) | 2004-07-13 | 2020-11-10 | Dexcom, Inc. | Analyte sensor |
US10524703B2 (en) | 2004-07-13 | 2020-01-07 | Dexcom, Inc. | Transcutaneous analyte sensor |
US11064917B2 (en) | 2004-07-13 | 2021-07-20 | Dexcom, Inc. | Analyte sensor |
US7783333B2 (en) | 2004-07-13 | 2010-08-24 | Dexcom, Inc. | Transcutaneous medical device with variable stiffness |
US11883164B2 (en) | 2004-07-13 | 2024-01-30 | Dexcom, Inc. | System and methods for processing analyte sensor data for sensor calibration |
US10918316B2 (en) | 2005-03-10 | 2021-02-16 | Dexcom, Inc. | System and methods for processing analyte sensor data for sensor calibration |
US10617336B2 (en) | 2005-03-10 | 2020-04-14 | Dexcom, Inc. | System and methods for processing analyte sensor data for sensor calibration |
US10856787B2 (en) | 2005-03-10 | 2020-12-08 | Dexcom, Inc. | System and methods for processing analyte sensor data for sensor calibration |
US11051726B2 (en) | 2005-03-10 | 2021-07-06 | Dexcom, Inc. | System and methods for processing analyte sensor data for sensor calibration |
US10743801B2 (en) | 2005-03-10 | 2020-08-18 | Dexcom, Inc. | System and methods for processing analyte sensor data for sensor calibration |
US10898114B2 (en) | 2005-03-10 | 2021-01-26 | Dexcom, Inc. | System and methods for processing analyte sensor data for sensor calibration |
US10925524B2 (en) | 2005-03-10 | 2021-02-23 | Dexcom, Inc. | System and methods for processing analyte sensor data for sensor calibration |
US10918318B2 (en) | 2005-03-10 | 2021-02-16 | Dexcom, Inc. | System and methods for processing analyte sensor data for sensor calibration |
US10709364B2 (en) | 2005-03-10 | 2020-07-14 | Dexcom, Inc. | System and methods for processing analyte sensor data for sensor calibration |
US10918317B2 (en) | 2005-03-10 | 2021-02-16 | Dexcom, Inc. | System and methods for processing analyte sensor data for sensor calibration |
US11000213B2 (en) | 2005-03-10 | 2021-05-11 | Dexcom, Inc. | System and methods for processing analyte sensor data for sensor calibration |
US10610136B2 (en) | 2005-03-10 | 2020-04-07 | Dexcom, Inc. | System and methods for processing analyte sensor data for sensor calibration |
US10610135B2 (en) | 2005-03-10 | 2020-04-07 | Dexcom, Inc. | System and methods for processing analyte sensor data for sensor calibration |
US10610137B2 (en) | 2005-03-10 | 2020-04-07 | Dexcom, Inc. | System and methods for processing analyte sensor data for sensor calibration |
US10716498B2 (en) | 2005-03-10 | 2020-07-21 | Dexcom, Inc. | System and methods for processing analyte sensor data for sensor calibration |
US8112240B2 (en) | 2005-04-29 | 2012-02-07 | Abbott Diabetes Care Inc. | Method and apparatus for providing leak detection in data monitoring and management systems |
US8744546B2 (en) | 2005-05-05 | 2014-06-03 | Dexcom, Inc. | Cellulosic-based resistance domain for an analyte sensor |
US10300507B2 (en) | 2005-05-05 | 2019-05-28 | Dexcom, Inc. | Cellulosic-based resistance domain for an analyte sensor |
US10813577B2 (en) | 2005-06-21 | 2020-10-27 | Dexcom, Inc. | Analyte sensor |
US10952652B2 (en) | 2005-11-01 | 2021-03-23 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US11363975B2 (en) | 2005-11-01 | 2022-06-21 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US10231654B2 (en) | 2005-11-01 | 2019-03-19 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US9326716B2 (en) | 2005-11-01 | 2016-05-03 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US8920319B2 (en) | 2005-11-01 | 2014-12-30 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US10201301B2 (en) | 2005-11-01 | 2019-02-12 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US8915850B2 (en) | 2005-11-01 | 2014-12-23 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US11911151B1 (en) | 2005-11-01 | 2024-02-27 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US11103165B2 (en) | 2005-11-01 | 2021-08-31 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US11272867B2 (en) | 2005-11-01 | 2022-03-15 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US11399748B2 (en) | 2005-11-01 | 2022-08-02 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US9078607B2 (en) | 2005-11-01 | 2015-07-14 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods of use |
US7766829B2 (en) | 2005-11-04 | 2010-08-03 | Abbott Diabetes Care Inc. | Method and system for providing basal profile modification in analyte monitoring and management systems |
US8585591B2 (en) | 2005-11-04 | 2013-11-19 | Abbott Diabetes Care Inc. | Method and system for providing basal profile modification in analyte monitoring and management systems |
US11538580B2 (en) | 2005-11-04 | 2022-12-27 | Abbott Diabetes Care Inc. | Method and system for providing basal profile modification in analyte monitoring and management systems |
US9323898B2 (en) | 2005-11-04 | 2016-04-26 | Abbott Diabetes Care Inc. | Method and system for providing basal profile modification in analyte monitoring and management systems |
US9669162B2 (en) | 2005-11-04 | 2017-06-06 | Abbott Diabetes Care Inc. | Method and system for providing basal profile modification in analyte monitoring and management systems |
US9039975B2 (en) | 2006-03-31 | 2015-05-26 | Abbott Diabetes Care Inc. | Analyte monitoring devices and methods therefor |
US8597575B2 (en) | 2006-03-31 | 2013-12-03 | Abbott Diabetes Care Inc. | Analyte monitoring devices and methods therefor |
US9380971B2 (en) | 2006-03-31 | 2016-07-05 | Abbott Diabetes Care Inc. | Method and system for powering an electronic device |
US9743863B2 (en) | 2006-03-31 | 2017-08-29 | Abbott Diabetes Care Inc. | Method and system for powering an electronic device |
US8933664B2 (en) | 2006-03-31 | 2015-01-13 | Abbott Diabetes Care Inc. | Method and system for powering an electronic device |
US8226891B2 (en) | 2006-03-31 | 2012-07-24 | Abbott Diabetes Care Inc. | Analyte monitoring devices and methods therefor |
US8593109B2 (en) | 2006-03-31 | 2013-11-26 | Abbott Diabetes Care Inc. | Method and system for powering an electronic device |
US9625413B2 (en) | 2006-03-31 | 2017-04-18 | Abbott Diabetes Care Inc. | Analyte monitoring devices and methods therefor |
US7920907B2 (en) | 2006-06-07 | 2011-04-05 | Abbott Diabetes Care Inc. | Analyte monitoring system and method |
US8364230B2 (en) | 2006-10-04 | 2013-01-29 | Dexcom, Inc. | Analyte sensor |
US8447376B2 (en) | 2006-10-04 | 2013-05-21 | Dexcom, Inc. | Analyte sensor |
US8298142B2 (en) | 2006-10-04 | 2012-10-30 | Dexcom, Inc. | Analyte sensor |
US11382539B2 (en) | 2006-10-04 | 2022-07-12 | Dexcom, Inc. | Analyte sensor |
US8774886B2 (en) | 2006-10-04 | 2014-07-08 | Dexcom, Inc. | Analyte sensor |
US20080086042A1 (en) * | 2006-10-04 | 2008-04-10 | Dexcom, Inc. | Analyte sensor |
US8478377B2 (en) | 2006-10-04 | 2013-07-02 | Dexcom, Inc. | Analyte sensor |
US7775975B2 (en) | 2006-10-04 | 2010-08-17 | Dexcom, Inc. | Analyte sensor |
US11399745B2 (en) | 2006-10-04 | 2022-08-02 | Dexcom, Inc. | Dual electrode system for a continuous analyte sensor |
US10349873B2 (en) | 2006-10-04 | 2019-07-16 | Dexcom, Inc. | Analyte sensor |
US8364231B2 (en) | 2006-10-04 | 2013-01-29 | Dexcom, Inc. | Analyte sensor |
US8911367B2 (en) | 2006-10-04 | 2014-12-16 | Dexcom, Inc. | Analyte sensor |
US8532730B2 (en) | 2006-10-04 | 2013-09-10 | Dexcom, Inc. | Analyte sensor |
US8275438B2 (en) | 2006-10-04 | 2012-09-25 | Dexcom, Inc. | Analyte sensor |
US9451908B2 (en) | 2006-10-04 | 2016-09-27 | Dexcom, Inc. | Analyte sensor |
US8425416B2 (en) | 2006-10-04 | 2013-04-23 | Dexcom, Inc. | Analyte sensor |
US8449464B2 (en) | 2006-10-04 | 2013-05-28 | Dexcom, Inc. | Analyte sensor |
US8562528B2 (en) | 2006-10-04 | 2013-10-22 | Dexcom, Inc. | Analyte sensor |
US8930203B2 (en) | 2007-02-18 | 2015-01-06 | Abbott Diabetes Care Inc. | Multi-function analyte test device and methods therefor |
US8732188B2 (en) | 2007-02-18 | 2014-05-20 | Abbott Diabetes Care Inc. | Method and system for providing contextual based medication dosage determination |
US9095290B2 (en) | 2007-03-01 | 2015-08-04 | Abbott Diabetes Care Inc. | Method and apparatus for providing rolling data in communication systems |
US9801545B2 (en) | 2007-03-01 | 2017-10-31 | Abbott Diabetes Care Inc. | Method and apparatus for providing rolling data in communication systems |
US8123686B2 (en) | 2007-03-01 | 2012-02-28 | Abbott Diabetes Care Inc. | Method and apparatus for providing rolling data in communication systems |
US9035767B2 (en) | 2007-05-08 | 2015-05-19 | Abbott Diabetes Care Inc. | Analyte monitoring system and methods |
US8665091B2 (en) | 2007-05-08 | 2014-03-04 | Abbott Diabetes Care Inc. | Method and device for determining elapsed sensor life |
US8456301B2 (en) | 2007-05-08 | 2013-06-04 | Abbott Diabetes Care Inc. | Analyte monitoring system and methods |
US11696684B2 (en) | 2007-05-08 | 2023-07-11 | Abbott Diabetes Care Inc. | Analyte monitoring system and methods |
US9314198B2 (en) | 2007-05-08 | 2016-04-19 | Abbott Diabetes Care Inc. | Analyte monitoring system and methods |
US10178954B2 (en) | 2007-05-08 | 2019-01-15 | Abbott Diabetes Care Inc. | Analyte monitoring system and methods |
US9177456B2 (en) | 2007-05-08 | 2015-11-03 | Abbott Diabetes Care Inc. | Analyte monitoring system and methods |
US8593287B2 (en) | 2007-05-08 | 2013-11-26 | Abbott Diabetes Care Inc. | Analyte monitoring system and methods |
US8362904B2 (en) | 2007-05-08 | 2013-01-29 | Abbott Diabetes Care Inc. | Analyte monitoring system and methods |
US8461985B2 (en) | 2007-05-08 | 2013-06-11 | Abbott Diabetes Care Inc. | Analyte monitoring system and methods |
US9949678B2 (en) | 2007-05-08 | 2018-04-24 | Abbott Diabetes Care Inc. | Method and device for determining elapsed sensor life |
US9000929B2 (en) | 2007-05-08 | 2015-04-07 | Abbott Diabetes Care Inc. | Analyte monitoring system and methods |
US9649057B2 (en) | 2007-05-08 | 2017-05-16 | Abbott Diabetes Care Inc. | Analyte monitoring system and methods |
US8149117B2 (en) | 2007-05-08 | 2012-04-03 | Abbott Diabetes Care Inc. | Analyte monitoring system and methods |
US10653317B2 (en) | 2007-05-08 | 2020-05-19 | Abbott Diabetes Care Inc. | Analyte monitoring system and methods |
US9574914B2 (en) | 2007-05-08 | 2017-02-21 | Abbott Diabetes Care Inc. | Method and device for determining elapsed sensor life |
US10952611B2 (en) | 2007-05-08 | 2021-03-23 | Abbott Diabetes Care Inc. | Analyte monitoring system and methods |
US7928850B2 (en) | 2007-05-08 | 2011-04-19 | Abbott Diabetes Care Inc. | Analyte monitoring system and methods |
US10791928B2 (en) | 2007-05-18 | 2020-10-06 | Dexcom, Inc. | Analyte sensors having a signal-to-noise ratio substantially unaffected by non-constant noise |
US8562558B2 (en) | 2007-06-08 | 2013-10-22 | Dexcom, Inc. | Integrated medicament delivery device for use with continuous analyte sensor |
US9741139B2 (en) | 2007-06-08 | 2017-08-22 | Dexcom, Inc. | Integrated medicament delivery device for use with continuous analyte sensor |
US10403012B2 (en) | 2007-06-08 | 2019-09-03 | Dexcom, Inc. | Integrated medicament delivery device for use with continuous analyte sensor |
US11373347B2 (en) | 2007-06-08 | 2022-06-28 | Dexcom, Inc. | Integrated medicament delivery device for use with continuous analyte sensor |
US11744943B2 (en) | 2007-10-09 | 2023-09-05 | Dexcom, Inc. | Integrated insulin delivery system with continuous glucose sensor |
US11160926B1 (en) | 2007-10-09 | 2021-11-02 | Dexcom, Inc. | Pre-connected analyte sensors |
US11896374B2 (en) | 2008-03-25 | 2024-02-13 | Dexcom, Inc. | Analyte sensor |
US8396528B2 (en) | 2008-03-25 | 2013-03-12 | Dexcom, Inc. | Analyte sensor |
US10602968B2 (en) | 2008-03-25 | 2020-03-31 | Dexcom, Inc. | Analyte sensor |
US8583204B2 (en) | 2008-03-28 | 2013-11-12 | Dexcom, Inc. | Polymer membranes for continuous analyte sensors |
US8682408B2 (en) | 2008-03-28 | 2014-03-25 | Dexcom, Inc. | Polymer membranes for continuous analyte sensors |
US9173607B2 (en) | 2008-03-28 | 2015-11-03 | Dexcom, Inc. | Polymer membranes for continuous analyte sensors |
US9173606B2 (en) | 2008-03-28 | 2015-11-03 | Dexcom, Inc. | Polymer membranes for continuous analyte sensors |
US11147483B2 (en) | 2008-03-28 | 2021-10-19 | Dexcom, Inc. | Polymer membranes for continuous analyte sensors |
US10143410B2 (en) | 2008-03-28 | 2018-12-04 | Dexcom, Inc. | Polymer membranes for continuous analyte sensors |
US8954128B2 (en) | 2008-03-28 | 2015-02-10 | Dexcom, Inc. | Polymer membranes for continuous analyte sensors |
US11730407B2 (en) | 2008-03-28 | 2023-08-22 | Dexcom, Inc. | Polymer membranes for continuous analyte sensors |
US9549699B2 (en) | 2008-03-28 | 2017-01-24 | Dexcom, Inc. | Polymer membranes for continuous analyte sensors |
US9693721B2 (en) | 2008-03-28 | 2017-07-04 | Dexcom, Inc. | Polymer membranes for continuous analyte sensors |
US9572523B2 (en) | 2008-03-28 | 2017-02-21 | Dexcom, Inc. | Polymer membranes for continuous analyte sensors |
US9566026B2 (en) | 2008-03-28 | 2017-02-14 | Dexcom, Inc. | Polymer membranes for continuous analyte sensors |
US8900431B2 (en) | 2008-08-27 | 2014-12-02 | Edwards Lifesciences Corporation | Analyte sensor |
US11918354B2 (en) | 2008-09-19 | 2024-03-05 | Dexcom, Inc. | Particle-containing membrane and particulate electrode for analyte sensors |
US10028684B2 (en) | 2008-09-19 | 2018-07-24 | Dexcom, Inc. | Particle-containing membrane and particulate electrode for analyte sensors |
US8560039B2 (en) | 2008-09-19 | 2013-10-15 | Dexcom, Inc. | Particle-containing membrane and particulate electrode for analyte sensors |
US9339222B2 (en) | 2008-09-19 | 2016-05-17 | Dexcom, Inc. | Particle-containing membrane and particulate electrode for analyte sensors |
US10028683B2 (en) | 2008-09-19 | 2018-07-24 | Dexcom, Inc. | Particle-containing membrane and particulate electrode for analyte sensors |
US10561352B2 (en) | 2008-09-19 | 2020-02-18 | Dexcom, Inc. | Particle-containing membrane and particulate electrode for analyte sensors |
US10980461B2 (en) | 2008-11-07 | 2021-04-20 | Dexcom, Inc. | Advanced analyte sensor calibration and error detection |
US8676513B2 (en) | 2009-01-29 | 2014-03-18 | Abbott Diabetes Care Inc. | Method and device for early signal attenuation detection using blood glucose measurements |
US9066709B2 (en) | 2009-01-29 | 2015-06-30 | Abbott Diabetes Care Inc. | Method and device for early signal attenuation detection using blood glucose measurements |
US8103456B2 (en) | 2009-01-29 | 2012-01-24 | Abbott Diabetes Care Inc. | Method and device for early signal attenuation detection using blood glucose measurements |
US8473220B2 (en) | 2009-01-29 | 2013-06-25 | Abbott Diabetes Care Inc. | Method and device for early signal attenuation detection using blood glucose measurements |
US9226701B2 (en) | 2009-04-28 | 2016-01-05 | Abbott Diabetes Care Inc. | Error detection in critical repeating data in a wireless sensor system |
US11793936B2 (en) | 2009-05-29 | 2023-10-24 | Abbott Diabetes Care Inc. | Medical device antenna systems having external antenna configurations |
US11872370B2 (en) | 2009-05-29 | 2024-01-16 | Abbott Diabetes Care Inc. | Medical device antenna systems having external antenna configurations |
US9517025B2 (en) | 2009-07-02 | 2016-12-13 | Dexcom, Inc. | Analyte sensor with increased reference capacity |
US9320466B2 (en) | 2009-07-02 | 2016-04-26 | Dexcom, Inc. | Analyte sensor |
US10470691B2 (en) | 2009-07-02 | 2019-11-12 | Dexcom, Inc. | Analyte sensor with increased reference capacity |
US9907497B2 (en) | 2009-07-02 | 2018-03-06 | Dexcom, Inc. | Analyte sensor |
US9763608B2 (en) | 2009-07-02 | 2017-09-19 | Dexcom, Inc. | Analyte sensors and methods of manufacturing same |
US9237864B2 (en) | 2009-07-02 | 2016-01-19 | Dexcom, Inc. | Analyte sensors and methods of manufacturing same |
US9351677B2 (en) | 2009-07-02 | 2016-05-31 | Dexcom, Inc. | Analyte sensor with increased reference capacity |
US11559229B2 (en) | 2009-07-02 | 2023-01-24 | Dexcom, Inc. | Analyte sensor |
US9131885B2 (en) | 2009-07-02 | 2015-09-15 | Dexcom, Inc. | Analyte sensors and methods of manufacturing same |
US10420494B2 (en) | 2009-07-02 | 2019-09-24 | Dexcom, Inc. | Analyte sensor |
US8828201B2 (en) | 2009-07-02 | 2014-09-09 | Dexcom, Inc. | Analyte sensors and methods of manufacturing same |
US9314195B2 (en) | 2009-08-31 | 2016-04-19 | Abbott Diabetes Care Inc. | Analyte signal processing device and methods |
US8993331B2 (en) | 2009-08-31 | 2015-03-31 | Abbott Diabetes Care Inc. | Analyte monitoring system and methods for managing power and noise |
US9968302B2 (en) | 2009-08-31 | 2018-05-15 | Abbott Diabetes Care Inc. | Analyte signal processing device and methods |
US11150145B2 (en) | 2009-08-31 | 2021-10-19 | Abbott Diabetes Care Inc. | Analyte monitoring system and methods for managing power and noise |
US11635332B2 (en) | 2009-08-31 | 2023-04-25 | Abbott Diabetes Care Inc. | Analyte monitoring system and methods for managing power and noise |
US11045147B2 (en) | 2009-08-31 | 2021-06-29 | Abbott Diabetes Care Inc. | Analyte signal processing device and methods |
US10429250B2 (en) | 2009-08-31 | 2019-10-01 | Abbott Diabetes Care, Inc. | Analyte monitoring system and methods for managing power and noise |
US9320461B2 (en) | 2009-09-29 | 2016-04-26 | Abbott Diabetes Care Inc. | Method and apparatus for providing notification function in analyte monitoring systems |
US10349874B2 (en) | 2009-09-29 | 2019-07-16 | Abbott Diabetes Care Inc. | Method and apparatus for providing notification function in analyte monitoring systems |
US9750439B2 (en) | 2009-09-29 | 2017-09-05 | Abbott Diabetes Care Inc. | Method and apparatus for providing notification function in analyte monitoring systems |
US9549692B2 (en) | 2011-08-26 | 2017-01-24 | Dexcom, Inc. | Polymer membranes for continuous analyte sensors |
US9980669B2 (en) | 2011-11-07 | 2018-05-29 | Abbott Diabetes Care Inc. | Analyte monitoring device and methods |
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