US3669116A - Drainage catheter with anticlogging means - Google Patents
Drainage catheter with anticlogging means Download PDFInfo
- Publication number
- US3669116A US3669116A US52655A US3669116DA US3669116A US 3669116 A US3669116 A US 3669116A US 52655 A US52655 A US 52655A US 3669116D A US3669116D A US 3669116DA US 3669116 A US3669116 A US 3669116A
- Authority
- US
- United States
- Prior art keywords
- cuff
- wall
- drainage catheter
- tube
- port
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/0067—Catheters; Hollow probes characterised by the distal end, e.g. tips
- A61M25/0068—Static characteristics of the catheter tip, e.g. shape, atraumatic tip, curved tip or tip structure
- A61M25/007—Side holes, e.g. their profiles or arrangements; Provisions to keep side holes unblocked
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/84—Drainage tubes; Aspiration tips
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M27/00—Drainage appliance for wounds or the like, i.e. wound drains, implanted drains
- A61M27/002—Implant devices for drainage of body fluids from one part of the body to another
- A61M27/006—Cerebrospinal drainage; Accessories therefor, e.g. valves
Definitions
- ABSTRACT 22 F1 d ul 1 1 J y
- a physiological drainage catheter comprising an elongated [21] Appl. No.: 52,655 tube with a central axis and a peripheral wall surrounding it.
- a port passes through the wall to the passage for the purpose of draining fluid from the region surrounding the tube.
- a (gl. 013 peripheral cufi surrounds the wall and is fastened thereto on 5 8] i B 349 Bv each side of the port, the cuff ballooning away from the wall to 128/350 leave a cavity therebetween.
- the cuff is made of a flexible openpore silicone rubber sponge which provides a large number of restricted, but continuous, passages from outside of t e cu to e cavity, an an increase su ace area ere y to [56] References Cited h if m d d If th b UNITED STATES p ATENTS screen or filter fluid which reaches the port from regions to be drained outside the cuff to minimize clogging, and by its in- 281,043 7/1883 Finney 128/349 BV UX creased Surface aea to decrease the possibility f being closed 1,887,392 1 1/1932 Bacon...
- This invention relates to a physiological drainage catheter. Drainage catheters are widely used in various applications in the human body, perhaps the best known example being the drainage of fluid from within the cranium of a person afflicted with hydrocephalus. A problem frequently encountered in the use of catheters in the drainage of body fluids is that the body fluids are not clear solutions, but instead, carry with them particulate matter which tends to clog the drainage means and thereby destroy the efficacy of the device. It is an object of this invention to provide a catheter which screens or filters the fluids in such a manner as to prevent clogging of the device and to provide a large screening area compared to that which is otherwise obtainable, simply by perforating the walls of a tube.
- a physiological drainage catheter comprises an elongated tube having a peripheral wall surrounding an internal central passage extending along a central axis. At least one entry port passes through the wall to the passage, and a peripheral cuff surrounds the wall and is fastened thereto on each side of the port.
- the cuff balloons away from the wall so as to leave a cavity therebetween, and thereby provides a large screening area which also reduces the risk of closure by surrounding tissue.
- the cuff is made of a flexible openpore silicone rubber sponge whereby to provide a large number of restricted passages from outside the cuff to the cavity, thus to screen or filter fluid which reaches the port from the regions to be drained outside of the cuff.
- the cuff is attached to the outer wall of the tube so as to form a pair of axially spaced apart peripheral seals.
- the tube terminates at one end at a stiffened, laterally enlarged tip which forms an external shoulder, one end of the cuff abutting the shoulder.
- FIG. 1 shows the presently preferred embodiment of the invention installed in the head of a child suffering from hydrocephalus
- FIG. 2 is a fragmentary axial cross-section of the presently preferred embodiment of the invention.
- FIG. 3 is a cross-section taken at line 33 of FIG. 2.
- FIG. 1 shows a drainage system installed in the cranium ll of a child.
- the childs brain 12 is shown in general schematic notation, and a catheter 13 according to the invention is thrust through a hole 14 formed in the skull into the ventricles of the brain to drain excess fluid therefrom.
- a pump 15 of the general type shown in Schulte US. Pat. No. 3,111,125 issued Nov. 19, 1963, is placed against the outside of the skull beneath the scalp, and accepts fluid from the physiological drainage catheter and discharges it into a shunt tube 16 which is only incompletely shown, but which leads to some other region of the body, such as the heart, to dispose of the excess fluid.
- a shunt tube of this general classification is shown in Heyer US. Pat. No. 3,020,913 issued Feb.
- This shunt tube customarily includes a check valve means, and the pump itself similarly comprises a check valve means, the combination assuring a unidirectional flow from the ventricles of the brain to the region in which the fluid is discharged.
- the pump which is optional, also provides pumping means.
- a physiological drainage catheter includes as elongated tube 20 which has a central passage 21 extending along a central axis 22.
- a plurality of entry ports 23 extends through the peripheral wall 24 of the tube so as to enable the fluid to pass to the central passage, thence to be drained.
- a tip 30 is formed which is laterally enlarged relative to the outer wall of the elongated tube so as to form an external shoulder 31.
- a tapered nose 32 is provided to aid in insertion of the device.
- the tip is stiffened either by inherently increasing the hardness of the material of which this portion of the tube is made, or simply by providing an enlarged solid body without the intrusion of a central port. Either technique is satisfactory.
- a porous cuff 35 is formed peripherally around the tube and is joined at two fully peripheral seams 36, 37 on opposite sides of the plurality of entry ports.
- seam 36 is contiguous to shoulder 31.
- the cuff balloons away from the wall so as to form a cavity 38. This is done by using a balloon with greater inner diameter than the outer diameter of the tube, and by spacing the seams closer together than the sides of the cuff would be in its undistorted condition.
- the cufi is flexible, and the shape of the cavity will change in response to external forces.
- the ballooning provides a large surface area which folds and distorts, and is likely always to provide a surface somewhere that is open to flow, and not abutted by surrounding tissue.
- the tube will be of silicone rubber formulated according to the desired flexural properties.
- the cuff will be made of a silicone rubber foam or sponge (these terms being used interchangeably) which is open-cell in the sense that the cells communicate with one another and provide a large number of passageways through the wall of the cuff.
- the cuff is therefore porous over its entire: surface and provides screening or filtering means.
- the cuff provides a very large number of alternate passages for the fluid which are unlikely, because of their large number, all to be covered or clogged at once as opposed to the tendency in standard catheters for the relatively few numbers of entry ports to clog up.
- the cuff region is placed within the ventricle of the brain where the brain may press back against it. Such restoration of the ventricles has in the past clogged the relatively few entry ports, but this type of covering or clogging is less likely to occur in view of the very large area in which-fluid flow openings are available with the use of this cuff.
- a catheter suitable for use in drainage of a region of the human body in which the the risk exist of clogging both by particulate matter and by abutment contact of surrounding tissue, in which the risk are reduced by the provision of a flexible, large-area porous member that serves as an effective enlargement of the access means to the drainage tube, and which by its design, effectively precludes any chance that the tube will ever be completely stopped up, either by particulate matter or by mechanical contact.
- a drainage catheter comprising: an elongated tube having a central axis and a peripheral outer wall, an axial passage extending along the central axis, and at least one entry port passing through the wall to the passage; and a peripheral cufi encircling the wall and fastened thereto at axially spaced apart locations on opposite sides of the port, the cufi ballooning away from the wall to leave a cavity therebetween, the cuff being inherently flexible and resiliently deformable, and made of a flexible, open-pore silicone rubber sponge whereby to provide many restricted but continuous passages from outside of the cuff to the cavity, thereby rendering the cuff permeable to fluid, and uninflatable, the ballooning being caused by the inherent shape of the cuff as attached to the tube when otherwise unstressed, the cuff being deformable by contact with surrounding tissue.
- a physiological drainage catheter according to claim 1 in which the cuff makes a full peripheral seam with the wall on each side of the entry port.
- a physiological drainage catheter according to claim 2 in which there is provided a plurality of said entry ports, the seams being formed on opposite sides of the said plurality of entry ports.
- a physiological drainage catheter according to claim 1 in which the tube terminates in abutment at one of its ends against a shoulder formed on a laterally-enlarged tip.
Abstract
Description
Claims (4)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US5265570A | 1970-07-06 | 1970-07-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3669116A true US3669116A (en) | 1972-06-13 |
Family
ID=21979028
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US52655A Expired - Lifetime US3669116A (en) | 1970-07-06 | 1970-07-06 | Drainage catheter with anticlogging means |
Country Status (1)
Country | Link |
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US (1) | US3669116A (en) |
Cited By (35)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3854484A (en) * | 1971-10-22 | 1974-12-17 | R Jackson | Endotracheal tube with liquid fillable cuff |
DE2745015A1 (en) * | 1976-10-05 | 1978-04-06 | Olympus Optical Co | Liq. absorber for endoscope - has suction pipe applicator with absorption element at distal end |
EP0066685A1 (en) * | 1981-06-10 | 1982-12-15 | National Aeronautics And Space Administration | Ion beam Sputter-etched ventricular catheter for hydrocephalus shunt |
US4378797A (en) * | 1980-04-14 | 1983-04-05 | Thomas Jefferson University | Extravascular circulation of oxygenated synthetic nutrients to treat tissue hypoxic and ischemic disorders |
US4446154A (en) * | 1982-03-03 | 1984-05-01 | Thomas Jefferson University | Stroke treatment utilizing extravascular circulation of oxygenated synthetic nutrients to treat tissue hypoxic and ischemic disorders |
US4445500A (en) * | 1982-03-03 | 1984-05-01 | Thomas Jefferson University | Stroke treatment utilizing extravascular circulation of oxygenated synthetic nutrients to treat tissue hypoxic and ischemic disorders |
US4446155A (en) * | 1982-03-03 | 1984-05-01 | Thomas Jefferson University | Stroke treatment utilizing extravascular circulation of oxygenated synthetic nutrients to treat tissue hypoxic and ischemic disorders |
US4445514A (en) * | 1980-04-14 | 1984-05-01 | Thomas Jefferson University | Extravascular circulation of oxygenated synthetic nutrients to treat tissue hypoxic and ischemic disorders |
US4445888A (en) * | 1982-03-03 | 1984-05-01 | Thomas Jefferson University | Stroke treatment utilizing extravascular circulation of oxygenated synthetic nutrients to treat tissue hypoxic and ischemic disorders |
US4445886A (en) * | 1980-04-14 | 1984-05-01 | Thomas Jefferson University | Stroke treatment utilizing extravascular circulation of oxygenated synthetic nutrients to treat tissue hypoxic and ischemic disorders |
US4445887A (en) * | 1982-03-03 | 1984-05-01 | Thomas Jefferson University | Stroke treatment utilizing extravascular circulation of oxygenated synthetic nutrients to treat tissue hypoxic and ischemic disorders |
US4450841A (en) * | 1982-03-03 | 1984-05-29 | Thomas Jefferson University | Stroke treatment utilizing extravascular circulation of oxygenated synthetic nutrients to treat tissue hypoxic and ischemic disorders |
US4451251A (en) * | 1982-03-03 | 1984-05-29 | Thomas Jefferson University | Stroke treatment utilizing extravascular circulation of oxygenated synthetic nutrients to treat tissue hypoxic and ischemic disorders |
US4601724A (en) * | 1984-05-29 | 1986-07-22 | Cordis Corporation | Manufacture of tubing assembly for drainage catheter |
US4655745A (en) * | 1985-07-29 | 1987-04-07 | Corbett Joseph E | Ventricular catheter |
US4657532A (en) * | 1985-07-19 | 1987-04-14 | Thomas Jefferson University | Intra-peritoneal perfusion of oxygenated fluorocarbon |
US4686085A (en) * | 1980-04-14 | 1987-08-11 | Thomas Jefferson University | Stroke treatment utilizing extravascular circulation of oxygenated synthetic nutrients to treat tissue hypoxic and ischemic disorders |
US4758431A (en) * | 1980-04-14 | 1988-07-19 | Thomas Jefferson University | Extravascular circulation of oxygenated synthetic nutrients to treat tissue hypoxic and ischemic disorders |
US4795423A (en) * | 1980-04-14 | 1989-01-03 | Thomas Jefferson University | Oxygenated perfluorinated perfusion of the ocular globe to treat ischemic retinopathy |
US4830849A (en) * | 1980-04-14 | 1989-05-16 | Thomas Jefferson University | Extravascular circulation of oxygenated synthetic nutrients to treat tissue hypoxic and ischemic disorders |
US4840617A (en) * | 1980-04-14 | 1989-06-20 | Thomas Jefferson University | Cerebral and lumbar perfusion catheterization apparatus for use in treating hypoxic/ischemic neurologic tissue |
US20050171467A1 (en) * | 2004-01-30 | 2005-08-04 | Jaime Landman | Multiple function surgical device |
US20060074388A1 (en) * | 2004-09-30 | 2006-04-06 | Alan Dextradeur | Fluid management flow implants of improved occlusion resistance |
WO2007026182A1 (en) * | 2005-09-02 | 2007-03-08 | Estelle Enterprises Limited | Fluid exchange catheter system |
EP2086466A2 (en) * | 2006-10-31 | 2009-08-12 | NovaShunt AG | An implantable fluid management device for the removal of excess fluid |
US20100228179A1 (en) * | 2009-03-09 | 2010-09-09 | Thomas Gordon A | No clog shunt using a compact fluid drag path |
US20110178455A1 (en) * | 2002-02-25 | 2011-07-21 | Burnett Daniel R | Implantable fluid management system for the removal of excess fluid |
US10226193B2 (en) | 2015-03-31 | 2019-03-12 | Medtronic Ps Medical, Inc. | Wireless pressure measurement and monitoring for shunts |
US10518069B2 (en) | 2016-10-28 | 2019-12-31 | Integra LifeSciences Switzerland Sarl | Implantable valve assembly with extended lifespan |
US10918778B2 (en) | 2017-05-24 | 2021-02-16 | Sequana Medical Nv | Direct sodium removal method, solution and apparatus to reduce fluid overload in heart failure patients |
US11559618B2 (en) | 2017-05-24 | 2023-01-24 | Sequana Medical Nv | Formulations and methods for direct sodium removal in patients having severe renal dysfunction |
US11642449B2 (en) * | 2018-10-24 | 2023-05-09 | New Wave Endo-Surgical Corp. | Specialized suction irrigator with clot busting and anti-clogging features |
US11793916B2 (en) | 2012-02-15 | 2023-10-24 | Sequana Medical Nv | Systems and methods for fluid management |
US11839712B2 (en) | 2004-08-18 | 2023-12-12 | Sequana Medical Nv | Implantable fluid management system for treating heart failure |
US11854697B2 (en) | 2016-08-26 | 2023-12-26 | Sequana Medical Nv | Systems and methods for managing and analyzing data generated by an implantable device |
-
1970
- 1970-07-06 US US52655A patent/US3669116A/en not_active Expired - Lifetime
Cited By (56)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3854484A (en) * | 1971-10-22 | 1974-12-17 | R Jackson | Endotracheal tube with liquid fillable cuff |
DE2745015A1 (en) * | 1976-10-05 | 1978-04-06 | Olympus Optical Co | Liq. absorber for endoscope - has suction pipe applicator with absorption element at distal end |
US4378797A (en) * | 1980-04-14 | 1983-04-05 | Thomas Jefferson University | Extravascular circulation of oxygenated synthetic nutrients to treat tissue hypoxic and ischemic disorders |
US4830849A (en) * | 1980-04-14 | 1989-05-16 | Thomas Jefferson University | Extravascular circulation of oxygenated synthetic nutrients to treat tissue hypoxic and ischemic disorders |
US4795423A (en) * | 1980-04-14 | 1989-01-03 | Thomas Jefferson University | Oxygenated perfluorinated perfusion of the ocular globe to treat ischemic retinopathy |
US4758431A (en) * | 1980-04-14 | 1988-07-19 | Thomas Jefferson University | Extravascular circulation of oxygenated synthetic nutrients to treat tissue hypoxic and ischemic disorders |
US4445514A (en) * | 1980-04-14 | 1984-05-01 | Thomas Jefferson University | Extravascular circulation of oxygenated synthetic nutrients to treat tissue hypoxic and ischemic disorders |
US4686085A (en) * | 1980-04-14 | 1987-08-11 | Thomas Jefferson University | Stroke treatment utilizing extravascular circulation of oxygenated synthetic nutrients to treat tissue hypoxic and ischemic disorders |
US4445886A (en) * | 1980-04-14 | 1984-05-01 | Thomas Jefferson University | Stroke treatment utilizing extravascular circulation of oxygenated synthetic nutrients to treat tissue hypoxic and ischemic disorders |
US4840617A (en) * | 1980-04-14 | 1989-06-20 | Thomas Jefferson University | Cerebral and lumbar perfusion catheterization apparatus for use in treating hypoxic/ischemic neurologic tissue |
EP0066685A1 (en) * | 1981-06-10 | 1982-12-15 | National Aeronautics And Space Administration | Ion beam Sputter-etched ventricular catheter for hydrocephalus shunt |
US4445887A (en) * | 1982-03-03 | 1984-05-01 | Thomas Jefferson University | Stroke treatment utilizing extravascular circulation of oxygenated synthetic nutrients to treat tissue hypoxic and ischemic disorders |
US4451251A (en) * | 1982-03-03 | 1984-05-29 | Thomas Jefferson University | Stroke treatment utilizing extravascular circulation of oxygenated synthetic nutrients to treat tissue hypoxic and ischemic disorders |
US4450841A (en) * | 1982-03-03 | 1984-05-29 | Thomas Jefferson University | Stroke treatment utilizing extravascular circulation of oxygenated synthetic nutrients to treat tissue hypoxic and ischemic disorders |
US4445888A (en) * | 1982-03-03 | 1984-05-01 | Thomas Jefferson University | Stroke treatment utilizing extravascular circulation of oxygenated synthetic nutrients to treat tissue hypoxic and ischemic disorders |
US4446155A (en) * | 1982-03-03 | 1984-05-01 | Thomas Jefferson University | Stroke treatment utilizing extravascular circulation of oxygenated synthetic nutrients to treat tissue hypoxic and ischemic disorders |
US4445500A (en) * | 1982-03-03 | 1984-05-01 | Thomas Jefferson University | Stroke treatment utilizing extravascular circulation of oxygenated synthetic nutrients to treat tissue hypoxic and ischemic disorders |
US4446154A (en) * | 1982-03-03 | 1984-05-01 | Thomas Jefferson University | Stroke treatment utilizing extravascular circulation of oxygenated synthetic nutrients to treat tissue hypoxic and ischemic disorders |
US4601724A (en) * | 1984-05-29 | 1986-07-22 | Cordis Corporation | Manufacture of tubing assembly for drainage catheter |
US4657532A (en) * | 1985-07-19 | 1987-04-14 | Thomas Jefferson University | Intra-peritoneal perfusion of oxygenated fluorocarbon |
US4655745A (en) * | 1985-07-29 | 1987-04-07 | Corbett Joseph E | Ventricular catheter |
US9913968B2 (en) | 2002-02-25 | 2018-03-13 | Sequana Medical Ag | Implantable fluid management system for the removal of excess fluid |
US9421347B2 (en) | 2002-02-25 | 2016-08-23 | Sequana Medical Ag | Implantable fluid management system for the removal of excess fluid |
US8882699B2 (en) | 2002-02-25 | 2014-11-11 | Sequana Medical Ag | Implantable fluid management system for the removal of excess fluid |
US8517973B2 (en) | 2002-02-25 | 2013-08-27 | Sequana Medical Ag | Implantable fluid management system for the removal of excess fluid |
US20110178455A1 (en) * | 2002-02-25 | 2011-07-21 | Burnett Daniel R | Implantable fluid management system for the removal of excess fluid |
US8771221B2 (en) | 2003-11-03 | 2014-07-08 | Sequana Medical Ag | Implantable fluid management device for the removal of excess fluid |
US20050171467A1 (en) * | 2004-01-30 | 2005-08-04 | Jaime Landman | Multiple function surgical device |
US11839712B2 (en) | 2004-08-18 | 2023-12-12 | Sequana Medical Nv | Implantable fluid management system for treating heart failure |
US7976517B2 (en) | 2004-09-30 | 2011-07-12 | Codman & Shurtleff, Inc. | Fluid management flow implants of improved occlusion resistance |
US20060074388A1 (en) * | 2004-09-30 | 2006-04-06 | Alan Dextradeur | Fluid management flow implants of improved occlusion resistance |
US8221392B2 (en) | 2004-09-30 | 2012-07-17 | Codman & Shurtleff, Inc. | Fluid management flow implants of improved occlusion resistance |
US20080214982A1 (en) * | 2004-09-30 | 2008-09-04 | Alan Dextradeur | Fluid management flow implants of improved occlusion resistance |
WO2007026182A1 (en) * | 2005-09-02 | 2007-03-08 | Estelle Enterprises Limited | Fluid exchange catheter system |
RU2449810C2 (en) * | 2005-09-02 | 2012-05-10 | Джеймор Энтерпрайсис Лимитед | Hydrodynamic exchange catheter system |
US8398581B2 (en) | 2005-09-02 | 2013-03-19 | Irras Ab | Fluid exchange catheter system |
US11123483B2 (en) | 2005-09-02 | 2021-09-21 | Irras Ab | Fluid exchange catheter system |
US10293105B2 (en) | 2005-09-02 | 2019-05-21 | Irras Ab | Fluid exchange catheter system |
US20080200877A1 (en) * | 2005-09-02 | 2008-08-21 | Estelle Enterprises Limited | Fluid Exchange Catheter System |
US9623177B2 (en) | 2005-09-02 | 2017-04-18 | Irras Ab | Fluid exchange catheter system |
EP2086466A2 (en) * | 2006-10-31 | 2009-08-12 | NovaShunt AG | An implantable fluid management device for the removal of excess fluid |
EP2086466A4 (en) * | 2006-10-31 | 2011-10-26 | Sequana Medical Ag | An implantable fluid management device for the removal of excess fluid |
US20100228179A1 (en) * | 2009-03-09 | 2010-09-09 | Thomas Gordon A | No clog shunt using a compact fluid drag path |
US8088091B2 (en) | 2009-03-09 | 2012-01-03 | New Jersey Institute Of Technology | No clog shunt using a compact fluid drag path |
US11793916B2 (en) | 2012-02-15 | 2023-10-24 | Sequana Medical Nv | Systems and methods for fluid management |
US11375915B2 (en) | 2015-03-31 | 2022-07-05 | Medtronic Navigation, Inc. | Wireless pressure measurement and monitoring for shunts |
US10226193B2 (en) | 2015-03-31 | 2019-03-12 | Medtronic Ps Medical, Inc. | Wireless pressure measurement and monitoring for shunts |
US11844597B2 (en) | 2015-03-31 | 2023-12-19 | Medtronic Navigation, Inc. | Wireless pressure measurement and monitoring for shunts |
US11854697B2 (en) | 2016-08-26 | 2023-12-26 | Sequana Medical Nv | Systems and methods for managing and analyzing data generated by an implantable device |
US10518069B2 (en) | 2016-10-28 | 2019-12-31 | Integra LifeSciences Switzerland Sarl | Implantable valve assembly with extended lifespan |
US11464891B2 (en) | 2017-05-24 | 2022-10-11 | Sequana Medical Nv | Implantable pump for direct sodium removal therapy having on-board analyte sensor |
US11602583B2 (en) | 2017-05-24 | 2023-03-14 | Sequana Medical Nv | Direct sodium removal method, solution and apparatus to reduce fluid overload in heart failure patients |
US11844890B2 (en) | 2017-05-24 | 2023-12-19 | Sequana Medical Nv | Formulations and methods for direct sodium removal in patients having heart failure and/or severe renal dysfunction |
US11559618B2 (en) | 2017-05-24 | 2023-01-24 | Sequana Medical Nv | Formulations and methods for direct sodium removal in patients having severe renal dysfunction |
US10918778B2 (en) | 2017-05-24 | 2021-02-16 | Sequana Medical Nv | Direct sodium removal method, solution and apparatus to reduce fluid overload in heart failure patients |
US11642449B2 (en) * | 2018-10-24 | 2023-05-09 | New Wave Endo-Surgical Corp. | Specialized suction irrigator with clot busting and anti-clogging features |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: AMERICAN HOSPITAL SUPPLY CORPORATION; ONE AMERICAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:AMERICAN HEYER- SCHULTE CORPORATION;REEL/FRAME:004099/0695 Effective date: 19830121 |
|
AS | Assignment |
Owner name: AMERICAN HEYER-SCHULTE CORPORATION Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:HEYER-SCHULTE CORPORATION;REEL/FRAME:004245/0660 Effective date: 19800623 |
|
AS | Assignment |
Owner name: BAXTER TRAVENOL LABORATORIES, INC. A CORP. OF DE Free format text: MERGER;ASSIGNOR:AMERICAN HOSPITAL SUPPLY CORPORATION INTO;REEL/FRAME:004760/0345 Effective date: 19870126 |
|
AS | Assignment |
Owner name: BAXTER INTERNATIONAL INC. Free format text: CHANGE OF NAME;ASSIGNOR:BAXTER TRAVENOL LABORATORIES, INC., A CORP. OF DE;REEL/FRAME:005050/0870 Effective date: 19880518 |