US3516410A - Cerebro-ventricular catheter - Google Patents

Cerebro-ventricular catheter Download PDF

Info

Publication number
US3516410A
US3516410A US695477A US3516410DA US3516410A US 3516410 A US3516410 A US 3516410A US 695477 A US695477 A US 695477A US 3516410D A US3516410D A US 3516410DA US 3516410 A US3516410 A US 3516410A
Authority
US
United States
Prior art keywords
catheter
apertures
membranes
tissue
membrane
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
Application number
US695477A
Other languages
English (en)
Inventor
Salomon Hakim
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US3516410A publication Critical patent/US3516410A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/02—Holding devices, e.g. on the body
    • A61M25/04—Holding devices, e.g. on the body in the body, e.g. expansible
    • 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

  • the invention is a ventricular catheter for use with ventriculo-atrial shunting devices, and consists of a tubing of soft, tissue-compatible material with intake apertures positioned in the wall of the tubing at one end thereof, the end of the tubing preferably being closed.
  • Thin membranes of flexible, tissue-compatible material are attached between the holes and extend outward from the wall of the tube.
  • the flexibility is such that the lightest contact with attached tissue will bend the membrane and protect the underlying hole.
  • the membrane may be radially slit to facilitate collapsing upon passing of the catheter through tissue.
  • the membranes are long enough, so that when the catheter is inserted in tissue, they cover the apertures to prevent scraping of tissue thereby.
  • the purpose of the catheter of this invention is in general to avoid all the above difficulties by its construction, and, at the same time, to facilitate the proper positioning of the catheter within the ventricular cavity, since the construction of the catheter permits the surgeon to feel when the catheter has been correctly introduced and placed.
  • a catheter having means at one end for prevention of the blockage of the drainage apertures in said end of the catheter; the provision of a catheter of the above class in which said means is flexible and bendable so that it may be inserted through a small hole without damage to the human tissue which surrounds the hole; the provision of a catheter of either of the above classes in which the two "ice functions are compatible, so that the means will assume its normal shape after having been passed through a hole and will act to prevent blockage of the apertures by any of several mechanisms; the provision of a catheter of the above types in which the means for preventing blockage of draining apertures is also effective to close off the latter during passage through tissue; the provision of a catheter of any of the above types in which both the catheter and the means for preventing blockage of the drainage apertures may be made integrally of the same material; and the provision of a catheter which is relatively simple to make and easy to sterilize and manipulate.
  • FIG. 1 is an enlarged illustration of an embodiment of the invention, showing the drainage end of a catheter, the remaining length of the catheter tubing being omitted since it is conventional;
  • FIG. 2 is an elevation of the FIG. 1 embodiment the elevation again being enlarged for greater clarity;
  • FIG. 3 is a cross-section of the FIG. 1 embodiment, given to show its manufacture in greater detail.
  • FIG. 1 there is shown a general view of the drainage end of a catheter of this invention, the catheter consisting of a tube 2 made of a soft tissuecompatible material such as silicone rubber.
  • the tube 2 has a bore or lumen 4, and preferably has a closed end 6.
  • the material of the catheter may contain, for example, five percent barium sulphate or other radiopaque material for the purpose of facilitating X-ray examination to show the position of the catheter within, for example, a ventricle into which it has been introduced.
  • Attached to or forming part of the catheter at regular intervals are a plurality of radially extending membranes indicated generally by numeral 8, these membranes being also made of a soft flexible tissue-compatible material and may, preferably, be made of the same kind of silicone rubber as is made the tubing 2.
  • the membranes are equally spaced along the end portion of the catheter, and preferably each membrane is slit as indicated by the slits 10 to form what might be called, for lack of a better name, the vanes 12.
  • the purpose of slitting the membranes in this manner is to make each of the membranes more easily collapsible when the catheter is inserted through tissue, although the slits may be omitted if the membrane will collapse easily without them.
  • a pair of drainage apertures 18 is provided between the membranes (for example, see FIG. 2, membranes 14 and 16) between the membranes.
  • a pair of drainage apertures 18 a single aperture may be used between adjacent membranes.
  • the membranes 8 may be separate discs as shown in the drawing, or 7 they may consist of a continuous spiral of membranous material, the latter also being provided with slits 10.
  • the membranes 8 may first be blanked out of thin silicone and a hole slightly less in diameter than the outside diameter of tubing 2 may be formed at the center of the membranes. Then, each membrane is progressively slid over the end of the tubing 2 to its proper location, and attached thereto by a suitable cement compatible both with the silicone and with tissue. In manufacture, it is preferred to attach the membranes to the tubing 2, if they are to be attached separately, before making the apertures 18, 20, 22, etc. Or, during molding, with a suitably provided and designed mold, the membranes and the apertures can be molded at the end of the catheter during the time of molding.
  • Exemplary dimensions of the elements of this invention may be as follows: the outside diameter of the tubing 2 may be approximately 2.2 millimeters, the lumen 4 may be approximately 0.7 millimeter, each of the apertures 18, 20, 22, etc. may have a diameter of approximately 0.3 millimeter, the overall diameter of the membranes 8 may be approximately 8 millimeters, and the material of the membranes may be approximately 0.1 millimeter in thickness.
  • these dimensions can be varied at will, but a requirement is always that the membranes be of such length and at such position to be able to cover the apertures when bent over or folded down.
  • one of the advantages of the invention is that upon entering the tissue, the vanes 12 may collapse, and the radial extension of the membranes is such that when they are collapsed, they cover the apertures 18, 20, 22, etc.
  • This feature automatically reduces the scraping effect on the brain tissue caused by the edges of the apertures during insertion, particularly through brain tissue and permits a large membrane structure to be inserted through a small hole. It also prevents simultaneous, accidental introduction of brain tissue into the apertures with resulting plugging thereof.
  • the membranes As soon as the membranes are free within the ventricular cavity, they return approximately to their normal position and open up the apertures, the membranes then acting as spacers, preventing stoppage of the apertures, and also preventing the drainage end of the tube proper and consequently its apertures from coming into direct contact with the ventricular walls.
  • the membranes in their extended position act as a filter or block against the choroid plexus membranes, keeping them from coming in contact with the apertures in the catheter and thereby preventing the initial contact of the membrane with the holes.
  • the action of the membranes in performing the function of protecting the apertures is different from the use of fins or slots of a more or less rigid material.
  • drainage apertures were placed at the bottom of a slot in the hope that if living tissue came in contact with the catheter, it would bridge the slot thus leaving the aperture free.
  • a filament of tissue were to lie nearly parallel to the slot, slight motion would cause it to align itself and drop into the slot, thus plugging the aperture.
  • a thin strand of tissue lying against the membranes at even a slight angle will bend the membrane, thus causing it to tend to form a protective arch over the aperture while still allowing the entry of fluid from the side.
  • the flexible membranes are self-cleaning due to the pulsation of the cerebrospinal fluid in the ventricles of the brain. It may be observed either by spinal tap or by observation of motion in and about the brain that pulsations due to the beating action of the heart are transmitted to the cerebrospinal fluid which surrounds the catheter. This pulsation causes a flexing of the membranes of the catheter with each heart beat. If the membranes were stiff instead of flexible, small particles of free brain material or blood could collect on the walls of the membranes and accumulate into a mass Which would eventually occlude one or more of the apertures. However, the pulsating action of the flexible membranes tends to keep such particles off the walls so that a build-up of protein material is prevented.
  • the flexible membrane structure is thus seen to be a dynamic, self-cleaning mechanism depending upon a wave motion affect produced by pulsation of the cerebrospinal fluid.
  • the operating surgeon can softly and gently pull the catheter backwardly to feel the resistance of the nearer membrane or disc against the ventricular wall. Slight reintroduction then assures the surgeon of the exact position of the catheter in the ventricular cavity. If, for any reason, it should be desired to remove the catheter completely, it can be pulled out the same as it was introduced without harm to tissue, because of the ability of the vanes 12 to collapse.
  • a ventricular catheter comprising a tube of soft, tissue-compatible material, a plurality of apertures in the wall of the tube spaced longitudinally along a portion of the length of the tube, and a plurality of membranes of flexible tissue-compatible material mounted along said portion and projecting radially outwardly of the tube, the membranes being generally parallel to each other and having their inner portions attached to the tube, each membrane being located along the tube between said apertures, said membranes being sufficiently closely spacd to prevent blockage of the apertures when they are normally extended within the ventrical and'sufliciently resiliently flexible to collapse to cover the apertures as the catheter is inserted through brain tissue.
  • each membrane is slit radially from its central portions to its periphery to form vanes, thereby to increase the flexibility of the membrane structure as a whole, each vane in its normal position extending radially outward from the tube.

Landscapes

  • Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hematology (AREA)
  • Public Health (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Engineering & Computer Science (AREA)
  • Veterinary Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • Biophysics (AREA)
  • Surgery (AREA)
  • Vascular Medicine (AREA)
  • External Artificial Organs (AREA)
  • Media Introduction/Drainage Providing Device (AREA)
US695477A 1968-01-03 1968-01-03 Cerebro-ventricular catheter Expired - Lifetime US3516410A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US69547768A 1968-01-03 1968-01-03

Publications (1)

Publication Number Publication Date
US3516410A true US3516410A (en) 1970-06-23

Family

ID=24793149

Family Applications (1)

Application Number Title Priority Date Filing Date
US695477A Expired - Lifetime US3516410A (en) 1968-01-03 1968-01-03 Cerebro-ventricular catheter

Country Status (5)

Country Link
US (1) US3516410A (enrdf_load_stackoverflow)
DE (1) DE1900227C3 (enrdf_load_stackoverflow)
FR (1) FR1604446A (enrdf_load_stackoverflow)
GB (1) GB1230552A (enrdf_load_stackoverflow)
NL (1) NL158077B (enrdf_load_stackoverflow)

Cited By (55)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3592184A (en) * 1969-12-16 1971-07-13 David H Watkins Heart assist method and catheter
US3592183A (en) * 1969-05-27 1971-07-13 David H Watkins Heart assist method and apparatus
US3626950A (en) * 1970-06-19 1971-12-14 Heyer Schulte Corp Catheter with augmented drainage means
US3659611A (en) * 1969-12-15 1972-05-02 Dow Corning Tracheal tube seal
US3894541A (en) * 1974-02-27 1975-07-15 El Shafei Ismail Lotfy Method of treating hydrocephalus
US3896804A (en) * 1972-11-24 1975-07-29 Astra Sjuco Ab Catheter for submucous administration of local anesthetics in obtaining paracervical block
US3902501A (en) * 1973-06-21 1975-09-02 Medtronic Inc Endocardial electrode
DE2547796A1 (de) * 1974-10-25 1976-04-29 Sherwood Medical Ind Inc Saugkatheter
US4139012A (en) * 1977-03-25 1979-02-13 Zahorsky Carroll L Drain construction
US4217904A (en) * 1977-03-25 1980-08-19 Zahorsky Carroll L Drain construction
US4301815A (en) * 1980-01-23 1981-11-24 Telectronics Pty. Limited Trailing tine electrode lead
WO1982000764A1 (en) * 1980-09-04 1982-03-18 B Andersson A suction device such as a dental aspirator or sucker
US4349029A (en) * 1980-06-16 1982-09-14 Mott Patricia A Drainage balloon catheter system
US4378797A (en) * 1980-04-14 1983-04-05 Thomas Jefferson University Extravascular circulation of oxygenated synthetic nutrients to treat tissue hypoxic and ischemic disorders
US4392855A (en) * 1980-05-08 1983-07-12 Oreopoulos Dimitrios G Catheter
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
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
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
US4445514A (en) * 1980-04-14 1984-05-01 Thomas Jefferson University 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
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
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
US4533345A (en) * 1983-06-14 1985-08-06 Fertility & Genetics Associates Uterine 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
US4795447A (en) * 1987-07-06 1989-01-03 Dodson Marian L Endotracheal suction catheter
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
US4950232A (en) * 1987-08-11 1990-08-21 Surelab Superior Research Laboratories Cerebrospinal fluid shunt system
US5098411A (en) * 1991-06-10 1992-03-24 Pudenz-Schulte Medical Research Corporation Closed end hollow stylet assembly
US5322062A (en) * 1993-04-08 1994-06-21 Servas Francis M Non-inflatable sealing cuff for tracheal tube and other cannula
US5431637A (en) * 1992-07-31 1995-07-11 Sherwood Medical Company Endotracheal suction catheter
US5489276A (en) * 1994-10-07 1996-02-06 Kormed, Inc. Vacuum tube tip construction
US20050096582A1 (en) * 2002-02-25 2005-05-05 Burnett Daniel R. Implantable fluid management system for the removal of excess fluid
US20080154173A1 (en) * 2002-02-25 2008-06-26 Novashunt Ag Vesicular shunt for the drainage of excess fluid
US20090318844A1 (en) * 2003-11-03 2009-12-24 Novashunt Ag Implantable fluid management device for the removal of excess fluid
US20130104901A1 (en) * 2005-09-12 2013-05-02 Mergenet Medical, Inc. High Flow Therapy Artificial Airway Interfaces and Related Methods
US9119927B1 (en) 2009-05-19 2015-09-01 Jerry Blaine Ratterree Apparatus and method for intubating humans and non-human animals
US20160263360A1 (en) * 2015-03-11 2016-09-15 Reza Mohajer-Shojaee Universal multi-purpose fluid drainage catheter
US9694166B2 (en) 2002-03-26 2017-07-04 Medtronics Ps Medical, Inc. Method of draining cerebrospinal fluid
WO2018157206A1 (en) 2017-02-28 2018-09-07 Alexander Koefman Medical insert
US10194852B2 (en) 2008-01-18 2019-02-05 Plaquetec Ltd. Catheter
US10905599B2 (en) * 2013-03-14 2021-02-02 Intersurgical Ag Oral hygiene swab
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
US20210259817A1 (en) * 2018-12-11 2021-08-26 DMAX INTERNATIONAL Co.,ltd. Suction tip
US11559618B2 (en) 2017-05-24 2023-01-24 Sequana Medical Nv Formulations and methods for direct sodium removal in patients having severe renal dysfunction
US11752315B1 (en) 2016-10-07 2023-09-12 Carlos A. Hakim Method of treating normal pressure hydrocephalus
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
US20240198040A1 (en) * 2022-02-16 2024-06-20 Ezurotech Co., Ltd. Liquid medication-injecting urinary catheter

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1022819A (en) * 1973-02-16 1977-12-20 Sherwood Medical Industries Catheter construction
DE3015399C2 (de) * 1980-04-22 1982-09-23 B. Braun Melsungen Ag, 3508 Melsungen Absaugkatheter
DE3446033A1 (de) * 1984-12-18 1986-07-03 B. Braun Melsungen Ag, 3508 Melsungen Implantierbarer intraperitonealer katheter
DK77491A (da) * 1991-04-25 1992-10-26 Tage Wenzel Debess Selvjusterende trykkompenserende indrretning med det formaal at hindre ufrivillig afgang a urin, benaevnt inkontinens, fortrinsvis hos kvinder
GB2295092B (en) * 1994-11-17 1999-03-03 Simpla Plastics Fluid drainage apparatus
EP1470794A2 (en) * 1999-06-22 2004-10-27 ContiCare Medical, Inc. Self-cleansing bladder drainage device

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE88138C (enrdf_load_stackoverflow) *
US724913A (en) * 1901-06-27 1903-04-07 John Theodore Montgomery Syringe-nozzle.
US1383502A (en) * 1920-09-03 1921-07-05 Charles F L Vultee Vaginal syringe
US1767785A (en) * 1927-01-19 1930-06-24 Sushko Alexander De Urethral bougie
US3020913A (en) * 1958-07-15 1962-02-13 William T Heyer Surgical drain
US3136316A (en) * 1962-01-19 1964-06-09 Abbott Lab Catheter
US3428046A (en) * 1965-04-06 1969-02-18 Robert K Remer Catheter
US3438375A (en) * 1966-03-18 1969-04-15 Kendall & Co Non-traumatic retention catheter

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE88138C (enrdf_load_stackoverflow) *
US724913A (en) * 1901-06-27 1903-04-07 John Theodore Montgomery Syringe-nozzle.
US1383502A (en) * 1920-09-03 1921-07-05 Charles F L Vultee Vaginal syringe
US1767785A (en) * 1927-01-19 1930-06-24 Sushko Alexander De Urethral bougie
US3020913A (en) * 1958-07-15 1962-02-13 William T Heyer Surgical drain
US3136316A (en) * 1962-01-19 1964-06-09 Abbott Lab Catheter
US3428046A (en) * 1965-04-06 1969-02-18 Robert K Remer Catheter
US3438375A (en) * 1966-03-18 1969-04-15 Kendall & Co Non-traumatic retention catheter

Cited By (74)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3592183A (en) * 1969-05-27 1971-07-13 David H Watkins Heart assist method and apparatus
US3659611A (en) * 1969-12-15 1972-05-02 Dow Corning Tracheal tube seal
US3592184A (en) * 1969-12-16 1971-07-13 David H Watkins Heart assist method and catheter
US3626950A (en) * 1970-06-19 1971-12-14 Heyer Schulte Corp Catheter with augmented drainage means
US3896804A (en) * 1972-11-24 1975-07-29 Astra Sjuco Ab Catheter for submucous administration of local anesthetics in obtaining paracervical block
US3902501A (en) * 1973-06-21 1975-09-02 Medtronic Inc Endocardial electrode
US3894541A (en) * 1974-02-27 1975-07-15 El Shafei Ismail Lotfy Method of treating hydrocephalus
DE2547796A1 (de) * 1974-10-25 1976-04-29 Sherwood Medical Ind Inc Saugkatheter
US4139012A (en) * 1977-03-25 1979-02-13 Zahorsky Carroll L Drain construction
US4217904A (en) * 1977-03-25 1980-08-19 Zahorsky Carroll L Drain construction
US4301815A (en) * 1980-01-23 1981-11-24 Telectronics Pty. Limited Trailing tine electrode lead
US4445514A (en) * 1980-04-14 1984-05-01 Thomas Jefferson University 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
US4378797A (en) * 1980-04-14 1983-04-05 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
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
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
US4392855A (en) * 1980-05-08 1983-07-12 Oreopoulos Dimitrios G Catheter
US4349029A (en) * 1980-06-16 1982-09-14 Mott Patricia A Drainage balloon catheter system
WO1982000764A1 (en) * 1980-09-04 1982-03-18 B Andersson A suction device such as a dental aspirator or sucker
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
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
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
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
US4533345A (en) * 1983-06-14 1985-08-06 Fertility & Genetics Associates Uterine catheter
US4657532A (en) * 1985-07-19 1987-04-14 Thomas Jefferson University Intra-peritoneal perfusion of oxygenated fluorocarbon
US4795447A (en) * 1987-07-06 1989-01-03 Dodson Marian L Endotracheal suction catheter
US4950232A (en) * 1987-08-11 1990-08-21 Surelab Superior Research Laboratories Cerebrospinal fluid shunt system
US5098411A (en) * 1991-06-10 1992-03-24 Pudenz-Schulte Medical Research Corporation Closed end hollow stylet assembly
US5431637A (en) * 1992-07-31 1995-07-11 Sherwood Medical Company Endotracheal suction catheter
US5322062A (en) * 1993-04-08 1994-06-21 Servas Francis M Non-inflatable sealing cuff for tracheal tube and other cannula
US5489276A (en) * 1994-10-07 1996-02-06 Kormed, Inc. Vacuum tube tip construction
US8517973B2 (en) 2002-02-25 2013-08-27 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
US20050096582A1 (en) * 2002-02-25 2005-05-05 Burnett Daniel R. Implantable fluid management system for the removal of excess fluid
US7909790B2 (en) 2002-02-25 2011-03-22 Novashunt 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
US8394048B2 (en) 2002-02-25 2013-03-12 Sequana Medical Ag Vesicular shunt for the drainage of excess fluid
US20080154173A1 (en) * 2002-02-25 2008-06-26 Novashunt Ag Vesicular shunt for the drainage of excess fluid
US9421347B2 (en) 2002-02-25 2016-08-23 Sequana Medical Ag Implantable fluid management system for the removal of excess fluid
US9913968B2 (en) 2002-02-25 2018-03-13 Sequana Medical Ag Implantable fluid management system for the removal of excess fluid
US9694166B2 (en) 2002-03-26 2017-07-04 Medtronics Ps Medical, Inc. Method of draining cerebrospinal fluid
US8398577B2 (en) * 2003-11-03 2013-03-19 Sequana Medical Ag Implantable fluid management device 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
US20090318844A1 (en) * 2003-11-03 2009-12-24 Novashunt Ag Implantable fluid management device for the removal of excess fluid
US11839712B2 (en) 2004-08-18 2023-12-12 Sequana Medical Nv Implantable fluid management system for treating heart failure
US20130104901A1 (en) * 2005-09-12 2013-05-02 Mergenet Medical, Inc. High Flow Therapy Artificial Airway Interfaces and Related Methods
US9381317B2 (en) * 2005-09-12 2016-07-05 Mergenet Medical, Inc. High flow therapy artificial airway interfaces and related methods
US10194852B2 (en) 2008-01-18 2019-02-05 Plaquetec Ltd. Catheter
US10357194B2 (en) * 2008-01-18 2019-07-23 Plaquetec Ltd. Catheter
US11490841B2 (en) 2008-01-18 2022-11-08 Plaquetec Ltd. Catheter
US9119927B1 (en) 2009-05-19 2015-09-01 Jerry Blaine Ratterree Apparatus and method for intubating humans and non-human animals
US11793916B2 (en) 2012-02-15 2023-10-24 Sequana Medical Nv Systems and methods for fluid management
US10905599B2 (en) * 2013-03-14 2021-02-02 Intersurgical Ag Oral hygiene swab
US20160263360A1 (en) * 2015-03-11 2016-09-15 Reza Mohajer-Shojaee Universal multi-purpose fluid drainage catheter
US11854697B2 (en) 2016-08-26 2023-12-26 Sequana Medical Nv Systems and methods for managing and analyzing data generated by an implantable device
US11752315B1 (en) 2016-10-07 2023-09-12 Carlos A. Hakim Method of treating normal pressure hydrocephalus
US12121684B1 (en) 2016-10-07 2024-10-22 Carlos A. Hakim Method of treating normal pressure hydrocephalus
AU2018228272B2 (en) * 2017-02-28 2019-07-11 Alexander Koefman Medical insert
EP3576827A4 (en) * 2017-02-28 2020-10-14 Alexander Koefman MEDICAL INSERT
WO2018157206A1 (en) 2017-02-28 2018-09-07 Alexander Koefman Medical insert
US11559618B2 (en) 2017-05-24 2023-01-24 Sequana Medical Nv Formulations and methods for direct sodium removal in patients having severe renal dysfunction
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
US11464891B2 (en) 2017-05-24 2022-10-11 Sequana Medical Nv Implantable pump for direct sodium removal therapy having on-board analyte sensor
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
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
US20210259817A1 (en) * 2018-12-11 2021-08-26 DMAX INTERNATIONAL Co.,ltd. Suction tip
US20240198040A1 (en) * 2022-02-16 2024-06-20 Ezurotech Co., Ltd. Liquid medication-injecting urinary catheter
US12246138B2 (en) * 2022-02-16 2025-03-11 Ezurotech Co., Ltd. Liquid medication-injecting urinary catheter

Also Published As

Publication number Publication date
DE1900227B2 (de) 1977-11-17
NL6900141A (enrdf_load_stackoverflow) 1969-07-07
DE1900227A1 (de) 1969-07-31
NL158077B (nl) 1978-10-16
GB1230552A (enrdf_load_stackoverflow) 1971-05-05
DE1900227C3 (de) 1978-07-06
FR1604446A (enrdf_load_stackoverflow) 1971-11-08

Similar Documents

Publication Publication Date Title
US3516410A (en) Cerebro-ventricular catheter
US3020913A (en) Surgical drain
US3566875A (en) Device for draining cerebrospinal fluid
US3419010A (en) Catheter
US3654932A (en) Surgical drain for shunting fluid
US3435826A (en) Embolectomy catheter
US4474569A (en) Antenatal shunt
US7118548B2 (en) Device for the treatment of hydrocephalus
US4605395A (en) Hydrocephaly treatment device including a variable impedance filter
US4182343A (en) Double coeliac drainage tube made of silicone
US4382445A (en) Physiological fluid shunt system and improvements therefor
US4368737A (en) Implantable catheter
RU2193901C2 (ru) Катетер, в частности для перитонеального диализа
US3583387A (en) Pressure absorbing appliance for treating hydrocephalus
US3753439A (en) General purpose surgical drain
US3583404A (en) Nonblocking catheter
US4867740A (en) Multiple-membrane flow control valve and implantable shunt system
US4681570A (en) Peritoneal catheter
US3492996A (en) Ventriculo-atrial shunt
US3111125A (en) Drainage device
CA1259540A (en) Preformed catheter
US3669116A (en) Drainage catheter with anticlogging means
US4645493A (en) Catheter for medical-surgical application
US20030191452A1 (en) Catheter and method of fluid removal from a body cavity
US5098411A (en) Closed end hollow stylet assembly