WO2001017450A9 - Graphical user interface for monitoring and controlling use of medical devices - Google Patents
Graphical user interface for monitoring and controlling use of medical devicesInfo
- Publication number
- WO2001017450A9 WO2001017450A9 PCT/US2000/024461 US0024461W WO0117450A9 WO 2001017450 A9 WO2001017450 A9 WO 2001017450A9 US 0024461 W US0024461 W US 0024461W WO 0117450 A9 WO0117450 A9 WO 0117450A9
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- controller
- identification code
- key card
- image
- processing function
- Prior art date
Links
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B18/1485—Probes or electrodes therefor having a short rigid shaft for accessing the inner body through natural openings
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/90—Identification means for patients or instruments, e.g. tags
-
- A—HUMAN NECESSITIES
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- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B18/1477—Needle-like probes
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B18/1492—Probes or electrodes therefor having a flexible, catheter-like structure, e.g. for heart ablation
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- A—HUMAN NECESSITIES
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- A61B2017/00017—Electrical control of surgical instruments
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61B2017/00017—Electrical control of surgical instruments
- A61B2017/00022—Sensing or detecting at the treatment site
- A61B2017/00084—Temperature
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- A—HUMAN NECESSITIES
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- A—HUMAN NECESSITIES
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- A61B17/00234—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
- A61B2017/00238—Type of minimally invasive operation
- A61B2017/00269—Type of minimally invasive operation endoscopic mucosal resection EMR
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- A61B2018/00267—Expandable means emitting energy, e.g. by elements carried thereon having a basket shaped structure
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- A61B2018/00636—Sensing and controlling the application of energy
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- A61B2018/044—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating the surgical action being effected by a circulating hot fluid
- A61B2018/046—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating the surgical action being effected by a circulating hot fluid in liquid form
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- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B2018/1405—Electrodes having a specific shape
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- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B2018/1405—Electrodes having a specific shape
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- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
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- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B2018/1467—Probes or electrodes therefor using more than two electrodes on a single probe
Definitions
- the invention is directed to systems and methods for monitoring and controlling use of medical devices .
- the invention provides systems and methods for monitoring and controlling use of medical devices.
- the systems and methods employ a controller to control operation of the device and a reader to download information to the controller.
- the systems and methods also include a usage key card adapted to be handled separate from the device and comprising a storage medium formatted to contain an identification code unique to the usage key card.
- the identification code Upon reading by the reader, the identification code is downloaded to the controller.
- the controller includes a processing function for processing the identification code to either enable or disable operation of the device according to prescribed criteria.
- the systems and methods further include a display screen and an operating system to generate a viewable image on the display screen that changes in response to processing of the identification code by the processing function.
- the processing function causes the controller to create a table by registering unlike identification codes in memory as they are downloaded by the reader.
- the controller enables operation of the device when a new identification code is registered in the table.
- the operating system displays a first image to prompt input to create the table for the device using the processing function.
- the processing function causes the controller to disable operation of the device when the given identification code matches an identification code in the table.
- the operating system displays a second image, different than the first image, to prompt exchange of the device when operation of the device is disabled as a result of the processing function.
- the processing function causes the controller to register in the table, a time period of use of the device.
- the processing function causes the controller to disable operation of the device when the time of use exceeds a prescribed period.
- the operating system displays a second image, different than the first image, to prompt exchange of the device when operation of the device is disabled as a result of the processing function.
- the device applies radio frequency energy to the tissue region.
- Fig. 1 is a diagrammatic view of a system for treating body sphincters and adjoining tissue regions, which embodies features of the invention
- Fig. 2 is a perspective view, with portions broken away, of a device usable in association with the system shown in Fig. 1 having an operative element for contacting tissue shown in a collapsed condition;
- Fig. 3 is a perspective view, with portions broken away, of the device shown in Fig. 2, with the operative element shown in an expanded condition;
- Fig. 4 is a perspective view, with portions broken away, of the device shown in Fig. 2, with the operative element shown in an expanded condition and the electrodes extended for use;
- Fig. 5 is an enlarged view of the operative element shown in Fig. 4, with the electrodes extended for use;
- Fig. 6 is a perspective view of a kit containing a device, such as shown in Figs. 2 to 5, and a usage key card;
- Fig. 7 is an enlarged, mainly schematic view of the usage key card shown in Fig. 6, embodied as a floppy disk, and also showing the pre-formatted files it contains ;
- Fig. 8 is a schematic view of a controller, which the system shown in Fig. 1 incorporates, showing the pre-programmed rules by which information contained on the usage key card shown in Figs. 6 and 7 is read and processed;
- Fig. 9 is a schematic view of another processing device that reads information from the usage key card for further processing.
- Fig. 10 is a left perspective views of an integrated generator/controller apparatus for use in association with a disposable treatment device, the apparatus including a graphical user interface (GUI) that aids in monitoring and controlling the incidence of use of the disposable treatment device;
- GUI graphical user interface
- Fig. 11 is a representative SETUP display that can be implemented by the GUI shown in Fig. 10 as part of monitoring and controlling the incidence of use of the disposable treatment device;
- Fig. 12 is a representative EXCHANGE display that can be implemented by the GUI shown in Fig. 10 as part of monitoring and controlling the incidence of use of the disposable treatment device; and Fig. 13 is a flow chart showing the various states and modes that the apparatus shown in Fig. 10 employs in implementing the GUI in monitoring and controlling the incidence of use of the disposable treatment device.
- the invention may be embodied in several forms without departing from its spirit or essential characteristics. The scope of the invention is defined in the appended claims, rather than in the specific description preceding them. All embodiments that fall within the meaning and range of equivalency of the claims are therefore intended to be embraced by the claims .
- Fig. 1 shows one embodiment of a system 10, which monitors and controls the use of an operative element 12.
- the system 10 is well adapted for association with single use, catheter-based devices. Therefore, in the illustrated embodiment, the operative element 12 is part of a catheter-based treatment device 26. It should be appreciated, however, that the system 10 is also adaptable for use with devices and methods that are not necessarily catheter-based.
- the Treatment Device
- the device 26 includes a handle 28 made, e.g., from molded plastic.
- the handle 28 is sized to be conveniently held by a physician, to introduce the catheter tube 30 into the targeted tissue region.
- the handle 28 carries a flexible catheter tube 30.
- the catheter tube 30 can be constructed, for example, using standard flexible, medical grade plastic materials.
- the catheter tube 30 has a distal end 34, which carries the operative element 12.
- the operative element 12 can support, for example, a device for imaging body tissue, such as an endoscope, or an ultrasound transducer.
- the operative element 12 can also support a device to deliver a drug or therapeutic material to body tissue.
- the operative element 12 can also support a device for sensing a physiological characteristic in tissue, such as electrical activity, or for transmitting energy to stimulate or form lesions in tissue.
- the device 26, in use is intended to treat dysfunction of sphincters and adjoining tissue regions in the upper gastrointestinal tract, e.g., in the lower esophageal sphincter and adjacent cardia of the stomach, as well as in the lower gastrointestinal tract, e.g., in the intestines, rectum and anal canal.
- the system 10 can be used in association with other devices and methods used to treat other dysfunctions elsewhere in the body, which are not necessarily sphincter-related.
- the various aspects of the invention have application in procedures requiring ablation of tissue throughout the body, or treatment of hemorrhoids, or restoring compliance to or otherwise tightening interior tissue or muscle regions.
- one function that the operative element 12 is to perform is to apply energy in a selective fashion to a targeted body region, which, for the purpose of illustration, can be the lower esophageal sphincter, or cardia, or both.
- the applied energy creates one or more lesions, or a prescribed pattern of lesions, below the mucosal surface of the esophagus or cardia.
- the subsurface lesions are formed in a manner that preserves and protects the mucosal surface against thermal damage .
- the structure of the operative element 12 to achieve this result can vary.
- a representative embodiment is shown in Figs. 2 to 4, in which the operative element 12 comprises a three-dimensional basket 56.
- the basket 56 includes one or more spines 58, and typically includes from four to eight spines 58, which are assembled together by a distal hub 60 and a proximal base 62.
- an expandable structure 72 comprising a balloon is located within the basket 56.
- the balloon structure 72 can be made, e.g., from a Polyethylene Terephthalate (PET) material, or a polyamide (non-compliant) material, or a radiation cross- linked polyethylene (semi-compliant) material, or a latex material, or a silicone material, or a C-Flex (highly compliant) material.
- the balloon structure 72 presents a normally, generally collapsed condition, as Fig. 2 shows. In this condition, the basket 56 is also normally collapsed about the balloon structure 72, presenting a low profile for deployment into the esophagus 10.
- the catheter tube 30 includes an interior lumen, which communicates with the interior of the balloon structure 72.
- a fitting 76 e.g., a syringe-activated check valve
- the fitting 76 communicates with the lumen.
- the fitting 76 couples the lumen to a syringe 78 (see Fig. 3) .
- the syringe 78 injects fluid under pressure through the lumen into the balloon structure 72, causing its expansion.
- Expansion of the balloon structure 72 urges the basket 56 to open and expand (see Fig. 3) .
- the force exerted by the balloon structure 72, when expanded, is sufficient to exert an opening force upon the tissue surrounding the basket 56.
- Each spine 58 carries an electrode 66 (see Fig. 4) .
- each electrode 66 is carried within the tubular spine 58 for sliding movement.
- Each electrode 66 slides from a retracted position, withdrawn in the spine 58 (shown in Fig.3) and an extended position, extending outward from the spine 58 (see Fig. 4) through a hole in the spine 58.
- a push-pull lever 68 on the handle 28 is coupled by one or more interior wires to the sliding electrodes 66.
- the lever 68 controls movement electrodes between the retracted position (by pulling rearward on the lever 68) and the extended position (by pushing forward on the lever 68) .
- the electrodes 66 have sufficient distal sharpness and strength, when extended, to penetrate a desired depth into tissue the smooth muscle of the esophageal or cardia 20 wall. The desired depth can range from about 4 mm to about 5 mm.
- the system 10 includes a generator 38 to supply the treatment energy to the electrodes 66.
- the generator 38 supplies radio frequency energy, e.g., having a frequency in the range of about 400 kHz to about 10 mHz.
- radio frequency energy e.g., having a frequency in the range of about 400 kHz to about 10 mHz.
- other forms of energy can be applied, e.g., coherent or incoherent light; heated or cooled fluid; resistive heating; microwave; ultrasound; a tissue ablation fluid; or cryogenic fluid.
- a cable 40 extending from the proximal end of the handle 28 terminates with an electrical connector 42.
- the cable 40 is electrically coupled to the operative element 12, e.g., by wires that extend through the interior of the handle 28 and catheter tube 30.
- the connector 42 plugs into the generator 38, to convey the generated energy to the operative element 12.
- the electrodes 66 are formed of material that conducts radio frequency energy, e.g., nickel titanium, stainless steel, e.g., 304 stainless steel, or a combination of nickel titanium and stainless steel.
- an electrical insulating material 70 is coated about the proximal end of each electrode 66.
- the material 70 insulates the mucosal surface of the esophagus 10 or cardia 20 from direct exposure to the radio frequency energy. Thermal damage to the mucosal surface is thereby avoided.
- the mucosal surface can also be actively cooled during application of radio frequency energy, to further protect the mucosal surface from thermal damage.
- At least one temperature sensor 80 is associated with each electrode.
- One temperature sensor 80 senses temperature conditions near the exposed distal end of the electrode 66, a second temperature sensor 80 is located on the corresponding spine 58, which rests against the muscosal surface when the balloon structure 72 is inflated.
- the system 10 can also include certain auxiliary processing equipment, e.g., an external fluid delivery apparatus 44 for supplying cooling liquid to the targeted tissue, e.g., through holes in the spines, and an external aspirating apparatus 46 for conveying liquid from the targeted tissue site, e.g., through other holes in the spine or elsewhere on the basket 56.
- the system 10 also includes a controller 52.
- the controller 52 which preferably includes a central processing unit (CPU) , is linked to the generator 38, the fluid delivery apparatus 44, and the aspirating apparatus 46.
- the aspirating apparatus 46 can comprise a conventional vacuum source typically present in a physician's suite, which operates continuously, independent of the controller 52.
- the controller 52 governs the delivery of processing fluid and, if desired, the removal of aspirated material .
- the controller 52 also governs the power levels, cycles, and duration that the radio frequency energy is distributed to the electrodes 66, to achieve and maintain power levels appropriate to achieve the desired treatment objectives.
- the controller 52 can condition the electrodes 66 to operate in a monopolar mode. In this mode, each electrode 66 serves as a transmitter of energy, and an indifferent patch electrode (not shown) serves as a common return for all electrodes 66.
- the controller 52 can condition the electrodes 66 to operate in a bipolar mode. In this mode, one of the electrodes comprises the transmitter and an other electrode comprises the return for the transmitted energy.
- the bipolar electrode pairs can electrodes 66 on adjacent spines, or electrodes 66 spaced more widely apart on different spines.
- the controller 52 includes an input/output (I/O) device 54.
- the I/O device 54 allows the physician to input control and processing variables, to enable the controller to generate appropriate command signals.
- the I/O device 54 also receives real time processing feedback information from the temperature sensors 80, for processing by the controller 52, e.g., to govern the application of energy and the delivery of processing fluid.
- the I/O device 54 also includes a graphical user interface (GUI) , to graphically present processing information to the physician for viewing or analysis.
- GUI graphical user interface
- the handle 28 and the catheter tube 30 form an integrated construction intended for a single use and subsequent disposal as a unit.
- the handle 28 can comprise a nondisposable component intended for multiple uses.
- the catheter tube 30, and components carried at the end of the catheter tube 30 comprise a disposable assembly, which the physician releasably connects to the handle 28 at time of use and disconnects and discards after use.
- the catheter tube 30 can, for example, include a male plug connector that couples to a female plug receptacle on the handle 28.
- the controller 54 includes a module 48 that controls use of the device 26.
- the device 26 is supplied as part of a kit 200 that includes, together with the device 26, a usage key card 202.
- the kit 200 packages the device 26 and usage key card 202 as a unitary, single use item in a sterile fashion within peripherally sealed sheets of plastic film material that are torn or peeled away at the instance of use.
- the presence of the device 26 and user key card 200 packaged together in the kit 200 verifies to the physician or user that device 26 is sterile and has not be subjected to prior use. The physician or user is thereby assured that the device 26 meets established performance and sterility specifications. No unused device 26 is supplied in the kit 200 without a usage key card 202, and vice versa.
- the usage key card 202 incorporates a storage medium
- the storage medium 204 contains information that enables at least two use control and monitoring functions.
- the first use control and monitoring function of the usage key card 202 occurs prior to use of the device 26 in association with the generator 38.
- the physician must first present the usage key card 202 for reading by the module 48.
- the controller 54 must then find that the usage key card 202 meets the criteria necessary for its registration by the controller 54.
- the criteria are designed to indicate the absence of a prior use, either in absolute terms or in terms of a period of use outside a predetermined time period. If the criteria are not met, the controller 54 will not register the usage key card 202, and the controller 54 will also not enable use of the generator 38 in association with the device 26. Further details of the registration function of the controller 54 will be described later.
- the second use control and monitoring function of the usage key card 202 occurs if the criteria are met and registration of the usage key card 202 occurs.
- the storage medium 204 of the usage key card 202 remains in the module 48 and receives, via the module 48, data generated by the controller 54 recording operating parameters and performance of the device 26.
- the storage medium 204 of the usage key card 202 retains and organizes the data for further off-line storage and processing. Further details of the data retention function will be described later.
- the usage key card 202 can be variously configured.
- the usage key card 202 comprises a computer-readable storage medium 204 housed within a conventional 3.5 inch floppy disk 206.
- the module 48 comprises a conventional floppy disk drive 208 (see Fig. 8) capable of reading data from and downloading data to the storage medium 204 of the disk 206.
- the usage key card 202 can take the form of a PC card, flash memory device, or magnetic card.
- the module 48 comprises a data reading and writing device compatible with the storage medium of the card 202.
- the storage medium 204 of the usage key card 202 contains at least two pre-formatted files 210 and 212.
- the first file 210 contains a unique identification code 214 capable of being read by the module 48 and registered by the controller 54.
- the second file 212 is formatted to receive and retain operational and performance data generated by the controller 54 to create from it a procedure log 220.
- the identification code 214 contained in the first file 210 is created to be unique to the particular usage key card 202. That is, each usage key card 202 contains its own unique identification code 214. No two usage key cards share the same identification code 214.
- the unique identification code 214 can comprise, e.g., a serial number uniquely assigned to the particular device 26 found in the kit 200, or any other unique code that is not repeated for any other usage key card 202.
- the code 214 itself can comprise letters, numbers, or combinations thereof.
- the module 48 reads the identification code 214 off the usage key card 202 for input to the controller 54.
- This identification code will be called the "instant identification code.”
- the controller 54 constructs and maintains in non-volatile memory a use table 216.
- the use table 216 contains all prior identification codes that meet the criteria to be registered by the controller 54. These identification codes will be called the "registered identification codes . "
- the controller 54 compares the instant identification code 214 to all registered identification codes contained in the table 216. In the absence of a match between the instant identification code and any registered identification code, the controller 54 updates the table, i.e., the controller registers the instant identification code by adding it to the table 216. Upon registering the usage key card 202, the controller 54 also enables use of generator 38 in association with the device.
- the controller 54 does not add the duplicative identification code to the table 216 and does not enable use of the generator 38 in association with any device 26.
- the controller 54 outputs to the GUI notice of prior use.
- the controller 54 maintains for each registered identification code in the table 216 a time record 218.
- the time record 218 contains a value reflecting the period of time during which energy was applied by the generator 38 during the previous permitted use.
- the controller 54 ascertains whether the time period of previous use contained in the record 218 is less than a prescribed maximum time period, e.g., 45 minutes. If so, the controller 54 enables a subsequent operation of the generator 38 in association with the device 26, but only for the time period remaining.
- the controller 54 updates the time record 218 as further use occurs.
- the controller 54 preferably outputs to the GUI the time period of permitted use remaining.
- the controller 54 If the controller 54 ascertains that the time period of previous use equals or exceeds the prescribed maximum time period, the controller 54 does not enable use of the generator 38. Preferably, the controller 54 outputs to the GUI notice of prior use.
- the second file 212 contained on the storage medium 204 of the usage key card 202 is formatted to receive, via the module 48, data that is generated by the controller 54 during permitted use of the device 26 in association with the generator 38.
- the file 212 retains the data in a formatted array according to pre-programmed rules to create a procedure log 220.
- the content of the formatted log 220 can vary.
- the log 220 can document, by date of treatment and number of treatments, the coagulation level (i.e., the depth at which the electrodes are inserted) , the time duration of energy application, the magnitude of energy delivered by each electrode, and the coolant flow rate.
- the procedure log 220 can also record at pre-established intervals (e.g., every 5 seconds) the temperatures of the electrodes and surrounding tissue, along other parameters, e.g. , sensed impedance and power delivered by each electrode.
- the procedure log 220 preferably records these values in a pre-formatted data base format, to enable import of the values as data base items for storage, processing, and retrieval by an off-line data processing device 222 having a compatible data base processing application.
- the off-line data processing device 222 reads processing log data from the usage key card 202 (via a floppy disk drive 230 or otherwise compatible reading device) .
- the device 222 can process the data in various ways according to the rules of the data processing application.
- the device 222 can, e.g., create a print- formatted record of the procedure log 220 for printing in a hard copy version.
- the device 222 can also, e.g., process the procedure logs for multiple devices and patients, to create historical patient treatment records, patient reimbursement records, and the like for storage or retrieval.
- the device 222 thereby makes possible the establishment and maintenance of an archival patient data base by processing individual procedure logs.
- the kit 200 can also include a label 224 that is pre-applied or that can be applied by the physician to the usage key card 202.
- the label 224 receives manually transcribed, visually readable information pertaining to the usage key card 202, e.g., the name of the patient being treated by the device 26, the date of treatment, and the like. In this way, usage key cards 202 can itself be physically stored and indexed.
- the kit 200 can also include instructions 232 for using the usage key card 202 in the fashion described.
- the instructions 232 can instruct the physician as to the need for having the usage key card 202 read by the module 48, in order to enable use of the device 26 in association with the generator 38.
- the instructions 232 can also instruct the physician regarding the content of the procedure log and the subsequent off-line processing options that are available.
- the storage medium 204 of the usage key card 202 can also contain at least one additional formatted file 226 that provides device information 228, which characterizes the device 26 supplied in the kit 200.
- the device information 228, when read by the module 48, can identify the type of device 26 in terms of its operational characteristics, the inclusion of temperature sensing, and reuse criteria (e.g., no reuse after a single use, or multiple uses permitted up a prescribed maximum number of uses, or multiple uses permitted up to a maximum time period of use, or multiple uses permitted up to a maximum application of RF energy) .
- the file 226 can also condition the GUI to display the desired images and data formats, which change depending upon the treatment procedure using the device (e.g, treatment of GERD, fecal incontinence, or urinary incontinence) .
- the controller 54 can compare the device characteristics with the operational characteristics of the controller 54 and generator 38, and disable operation of the device 26 should the characteristics of the device 26 be incompatible with the characteristics of the controller 54 and/or generator 38.
- GUI Graphical User Interface
- the radio frequency generator 38, the controller 52 with I/O device 54, and the fluid delivery apparatus 44 are integrated within a single housing 400.
- the I/O device 54 includes input connectors 402, 404, and 406.
- the connector 402 accepts an electrical connector 408, to which the connector 42 of the selected treatment device 26 is electrically coupled for use.
- the connector 404 accepts an electrical connector 410 coupled to a patch electrode 412 (for mono-polar operation) .
- the connector 406 accepts an pneumatic connector 414 coupled to a conventional foot pedal 416, when, when depressed, causes the delivery of radio frequency energy to the electrodes 66 on the device 26.
- the I/O device 54 also couples the controller 54 to an array of membrane keypads 422 and other indicator lights on the housing 400, for entering and indicating parameters governing the operation of the controller 52.
- the I/O device 54 also couples the controller 52 to a display microprocessor 474.
- the microprocessor 474 comprises, e.g., a dedicated Pentium ® -based central processing unit.
- the controller 52 transmits data to the microprocessor 474, and the microprocessor 474 acknowledges correct receipt of the data and formats the data for meaningful display to the physician.
- the dedicated display microprocessor 474 exerts no control over the controller 52.
- the controller 52 comprises an 68HC11 processor having an imbedded operating system.
- the controller 52 can comprise another style of processor, and the operating system can reside as process software on a hard drive coupled to the CPU, which is down loaded to the CPU during system initialization and startup.
- the display microprocessor 474 is coupled to a graphics display monitor 420 in the housing 400.
- the controller 52 implements through the display microprocessor 474 the graphical user interface, or GUI, which is displayed on the display monitor 420.
- the GUI can be realized, e.g., as a "C" language program implemented by the microprocessor 474 using the MS WINDOWSTM or NT application and the standard WINDOWS 32 API controls, e.g., as provided by the WINDOWSTM Development Kit, along with conventional graphics software disclosed in public literature.
- the display microprocessor 474 is also itself coupled to the floppy disk drive 208, previously described.
- the display microprocessor 474 can also be coupled to a keyboard, printer, and include one or more parallel port links and one or more conventional serial RS-232C port links or EthernetTM communication links.
- the operating system Upon boot-up of the CPU (see Fig. 13) , the operating system implements the START-UP function 510 for the GUI
- the GUI 424 displays an appropriate start-up logo and title image (not shown) , while the controller 52 performs a self-test.
- the controller 54 Upon completion of the START-UP function (see Fig. 13), the controller 54 conducts a CHECK function 512.
- the function 512 checks for the presence of a usage key card 202 in the floppy disk drive 208. As before described, a valid usage key card 202 is a prerequisite for using a given treatment device 26. The absence of a usage key card 202 causes the controller 54 to command the display microprocessor 474 to generate a SETUP prompt 500 on the graphics display monitor 420.
- Fig. 11 shows a representative SETUP prompt 500. When graphically implemented, as shown in Fig. 11, the SETUP prompt 500 leads the operator in a step-wise fashion through the tasks required to enable use of the generator 38.
- a first graphic field displays one or more icons and/or alpha-numeric indicia 502 that prompt the operator to connect the electrical connector 42 of the treatment device 26 to the connector cable 408.
- a second graphic field displays one or more icons and/or alphanumeric indicia 504 that prompt the operator to insert a valid user key card 202 (i.e., floppy disk).
- a third graphic field displays one or more icons and/or alpha- numeric indicia 506 that prompt the user to select the standby-ready button 430 on the housing 400 (see Fig. 10) .
- the actuation of the standby-ready button 430 causes the controller 52 to enter the STAND-BY mode 508 (see Fig. 13) .
- the controller 52 executes the REGISTRATION function 514, to determine whether the user key card 202 inserted in the drive 208 contains a valid identification code 214.
- the identification code 214 will not be deemed valid when the code already exists in the use table 216 of the controller 52 with a time record 218 equal to or greater than the prescribed maximum, thereby indicating a completed prior use of the device 26.
- the REGISTRATION function 514 commands the display microprocessor 474 to generate an EXCHANGE prompt 516 on the graphics display monitor 420.
- Fig. 12 shows a representative EXCHANGE prompt 516.
- the EXCHANGE prompt 516 leads the operator in a step-wise fashion through the tasks of replacing the previously used device 26 and its key card 202 with a new device 26 and its associated key card 202. As shown in Fig.
- a first graphic field displays one or more icons and/or alpha-numeric indicia 518 that prompt the operator to disconnect the electrical connector 42 of the previously used treatment device 26 and to connect a new treatment device 26.
- a second graphic field displays one or more icons and/or alphanumeric indicia 520 that prompt the operator to remove the old user key card 202 and insert the new key card 202 that accompanied the new treatment device 26 in the kit 200.
- a third graphic field displays one or more icons and/or alpha-numeric indicia 522 that prompt the user to again select the standby-ready button 430 on the housing 400.
- selection of the standby-ready button 430 causes the controller 52 to again enter the STAND-BY mode 508, and again execute the REGISTRATION function 514 (see Fig. 13) .
- the presence of a valid identification code 214 on the user card 202 causes the controller 52 to enter the READY mode 524.
- the operator deploys the treatment device 26 to the intended treatment site.
- the operator locates the electrodes 66 in the desired orientation.
- the operator depresses the foot pedal 416 (or selects the standby-ready button 430) .
- the controller 52 executes a prescribed PAUSE state 528 (e.g., 8 seconds), and then commands the generator 38 to apply radio frequency energy through the electrodes 66 carried by the treatment device 26.
- the controller 52 includes an UPDATE function 526 (see Fig. 13) .
- the UPDATE function 526 registers the time period during which radio frequency energy is applied using the device 26. The time is entered into the time record 218 of the use table 216 maintained by the controller 52. After a prescribed maximum period of use is registered (e.g., sixty minutes), the UPDATE function 526 interrupts application of radio frequency energy to the electrodes 66, and prevents further delivery by the generator 38 to the particular device 26.
- the UPDATE function 526 causes the controller 52 to generate the EXCHANGE prompt 516.
- the EXCHANGE prompt 516 requires the operator to replace the existing device 26 and its key card 200 with a new device 26 and its associated key card 200.
- the controller 52 while radio frequency energy is being applied during the READY mode 524, the controller 52 preferably monitors impedance and/or temperature conditions at the treatment site.
- the controller 52 enters a DEFAULT mode 530 and returns to the PAUSE state 528 when certain localized impedance and/or temperature conditions are sensed, e.g., when impedance is outside a prescribed range (for example, less than 50 ohms or greater than 1000 ohms) ; or electrode tip temperature exceeds 100 degrees C; or tissue surface temperature exceeds 50 degrees C.
- a prescribed range for example, less than 50 ohms or greater than 1000 ohms
- the controller 52 prevents the application of radio frequency energy through the electrodes 66 for a prescribed period of time (e.g., 8 seconds) , after which operation of the generator 38 using the foot pedal 416 or standby-ready button 430 is restored.
- a prescribed period of time e.g. 8 seconds
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU71180/00A AU7118000A (en) | 1999-09-08 | 2000-09-01 | Graphical user interface for monitoring and controlling use of medical devices |
JP2001521244A JP2003525659A (en) | 1999-09-08 | 2000-09-01 | Graphical user interface for monitoring and controlling the use of medical devices |
CA002384410A CA2384410A1 (en) | 1999-09-08 | 2000-09-01 | Graphical user interface for monitoring and controlling use of medical devices |
EP00959950A EP1211998A1 (en) | 1999-09-08 | 2000-09-01 | Graphical user interface for monitoring and controlling use of medical devices |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
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US15274999P | 1999-09-08 | 1999-09-08 | |
US60/152,749 | 1999-09-08 | ||
US49539000A | 2000-01-31 | 2000-01-31 | |
US09/495,390 | 2000-01-31 | ||
US09/574,704 US6464689B1 (en) | 1999-09-08 | 2000-05-18 | Graphical user interface for monitoring and controlling use of medical devices |
US09/574,704 | 2000-05-18 |
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WO2001017450A1 WO2001017450A1 (en) | 2001-03-15 |
WO2001017450A9 true WO2001017450A9 (en) | 2002-09-26 |
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PCT/US2000/024461 WO2001017450A1 (en) | 1999-09-08 | 2000-09-01 | Graphical user interface for monitoring and controlling use of medical devices |
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US (1) | US6464689B1 (en) |
EP (1) | EP1211998A1 (en) |
JP (1) | JP2003525659A (en) |
AU (1) | AU7118000A (en) |
CA (1) | CA2384410A1 (en) |
WO (1) | WO2001017450A1 (en) |
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EP1211998A1 (en) | 2002-06-12 |
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