US3889686A - Catheter tube - Google Patents

Catheter tube Download PDF

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Publication number
US3889686A
US3889686A US37372973A US3889686A US 3889686 A US3889686 A US 3889686A US 37372973 A US37372973 A US 37372973A US 3889686 A US3889686 A US 3889686A
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Prior art keywords
tube
means
aperture
catheter
bore
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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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Inventor
Stanley Francis Duturbure
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HOSWELL VICKI LORRAINE
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HOSWELL VICKI LORRAINE
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M25/00Catheters; Hollow probes
    • A61M25/0067Catheters; Hollow probes characterised by the distal end, e.g. tips
    • A61M25/0074Dynamic characteristics of the catheter tip, e.g. openable, closable, expandable or deformable
    • A61M25/0075Valve means
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M25/00Catheters; Hollow probes
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M25/00Catheters; Hollow probes
    • A61M25/10Balloon catheters
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M25/00Catheters; Hollow probes
    • A61M25/0067Catheters; Hollow probes characterised by the distal end, e.g. tips
    • A61M25/0074Dynamic characteristics of the catheter tip, e.g. openable, closable, expandable or deformable
    • A61M25/0075Valve means
    • A61M2025/0076Unidirectional valves

Abstract

A catheter having two bores in a main flexible tube. The first bore is for drainage of waste matter from the bladder and two apertures are provided, one adjacent the leading end of the catheter, the second being spaced from the first towards the following end of the catheter. Each of the apertures allows waste matter to drain from the bladder through the first bore. A thin tubular membrane is provided around the main tube of the catheter substantially in the region between the first and second apertures. The second bore communicates with the space between the membrane and the main tube via a further aperture in the main tube. Distilled water or the like may be introduced to this space through the second bore to expand the membrane so that the leading end of the catheter containing the two drainage apertures may be held in the bladder during use. Part of the thin tubular membrane is so arranged around the tube adjacent the second drainage aperture that a port is formed when the membrane is expanded whereby waste matter in the bladder in the vicinity of the junction of the bladder with the urethra may drain through the second aperture.

Description

United States Patent Duturbure June 17, 1975 CATHETER TUBE Primarv ExaminerDalton L. Truluck 75 I t St 1 F D b men or zzfg fg fi z g fi g g Attorney, Agent, or Flrm Ladas, Parry, Von Gehr,

' Goldsmith & Deschamps [73] Assignees: Vicki Lorraine Hoswell, Parramatta;

Michael Roy Duturbure, Wentworthville; Ronda Lynne Walker, Blacktown, all of Australia [22] Filed: June 26, 1973 [21] Appl. No.: 373,729

[30] Foreign Application Priority Data July 4, 1972 Australia 44209/72 [52] US. Cl 128/349 B [51] Int. Cl. A61m 25/00 [58] Field of Search 128/348, 349 B, 349 BV,

i 56] References Cited UNITED STATES PATENTS 2,919,697 1/1960 Kim 128/349 B 3,392,722 7/1968 .lorgensen 129/350 R X 3,726,283 4/1973 Dye et 81.... 129/349 BV 3,736,939 6/1973 Taylor 128/349 B 3,811,448 5/1974 Morton 128/349 B OTHER PUBLICATIONS Brit. Med. .lour. 25 Feb. 1967, p. 485.

57 ABSTRACT A catheter having two bores in a main flexible tube. The first bore is for drainage of waste matter from the bladder and two apertures are provided, one adjacent the leading end of the catheter, the second being spaced from the first towards the following end of the catheter. Each of the apertures allows waste matter to drain from the bladder through the first bore. A thin tubular membrane is provided around the main tube of the catheter substantially in the region between the first and second apertures. The second bore communicates with the space between the membrane and the main tube via a further aperture in the main tube. Distilled water or the like may be introduced to this space through the second bore to expand the membrane so that the leading end of the catheter containing the two drainage apertures may be held in the bladder during use. Part of the thin tubular membrane is so arranged around the tube adjacent the second drainage aperture that a port is formed when the membrane is expanded whereby waste matter in the bladder in the vicinity of the junction of the bladder with the urethra may drain through the second aperture.

2 Claims, 4 Drawing Figures CATHETER TUBE This invention relates to catheters.

Persons who are unable to control their bladders, such as paraplegics and quadriplegics, are fitted with catheters to drain urine and other waste matter from their bladders. Conventionally, such catheters comprise an extended flexible tube inserted through the urethra so that a small portion of the catheter extends into the bladder. In one form of known catheters the small portion extending into the bladder has an aperture adjacent the end thereof through which waste matter drains from the bladder through the flexible tube to a collection bag affixed to the end of the tube outside the body of the person concerned in the vicinity of the point where the flexible tube enters the body. Such conventional catheter is provided, adjacent the aperture and between the aperture and the junction of the urethra and the bladder when the catheter is in position, with a thin tubular membrane affixed around the said flexible tube. Within the tube there is provided a second bore, complementary to the bore through which waste matter drains from the bladder, this second bore communicating through a further aperture in the wall of the flexible tube with the space between the flexible tube and the thin tubular membrane so that the space between the flexible tube and the thin tubular membrane may be substantially filled with fluid such as distilled water whereby the thin tubular membrane is ballooned within the bladder. The ballooning of this thin tubular membrane prevents the end of the catheter wherein the draining aperture is provided from retracting from its position in the bladder. A major disadvantage of this known catheter is that fluids in the bladder tend to rest between the aperture and the junction of the bladder and the urethra and the ballooned thin tubular membrane prevents the drainage of these fluids through the aperture.

In order to overcome the disadvantage indicated above, it has been proposed to provide a second aperture in the wall of the flexible tube adjacent the thin tubular membrane but on the opposite side of this membrane from the first draining aperture. However, it has been found that this second aperture tends to locate in the urethra below the junction of the urethra and the bladder when the thin tubular membrane is ballooned so that provision of this second aperture does not overcome the difficulty referred to above.

It is an object of this invention to provide catheter means wherein a second aperture is provided as described above, said second aperture being located in the bladder adjacent the junction of the bladder and the urethra when the space between the thin tubular membrane and the flexible tube is ballooned, wherein the ballooned thin tubular membrane is arranged about the second aperture so that a port is provided through which port waste matter in the bladder adjacent the junction of the bladder and the urethra may pass into the second aperture thence into the first bore to be drained from the catheter.

It is a further object of this invention in a preferred form to provide a catheter as described wherein a nonreturn valve is provided in the first bore between the second and the first apertures so that cleaning fluid forced into the first bore may enter the bladder through the second aperture but is prevented by the non-return valve from entering that part of the first bore between the non-return valve and the first aperture.

It will be seen that waste matter in the bladder below the level of said first aperture will drain through the port into the first bore of the flexible tube and thence from the catheter into the collection bag provided at the end of the catheter.

Preferred forms of the invention are illustrated in the accompanying drawings in which:

FIG. 1 is a side elevation of the leading end of a first form of catheter tube in a suitable condition for insertion,

FIG. 2 is a side elevation of the catheter inserted into the bladder with the location balloon inflated to hold the catheter in place in the bladder,

FIG. 3 is an enlarged view in section on the line 3-3 in FIG. 2, and

FIG. 4 is a similar view to FIG. 3 of a second form of the catheter which incorporates a non-return valve.

The catheter 5 comprises a flexible tube 6 having two longitudinal bores 7 and 8 extending substantially throughout its length; the bore 7 being of larger diameter than the bore 8. The bore 7 extends to the closed leading end 9 of the tube 6, the said end 9 being rounded to assist insertion. A radial aperture 10 is provided in the tube wall adjacent its end 9, and a second similar aperture 11 is located a short distance down the tube 6 for a purpose to be described; both apertures communicate with the bore 7.

A thin tubular membrane 12 is positioned about th tube 6 between the apertures 10 and 11. The upper end 13 of the tube 12 is united as by welding with the wall of the tube 6. The lower end 14 of the membrane 12 extends below the aperture 11 but is cut away at 15 in U-shaped configuration about the periphery of said aperture 11. The end 14 and cut-away portion 15 of the tube 12 is joined to the wall of the tube 6.

The narrow bore 8 in the tube 6 extends to a medial termination between the apertures 10 and 11. A third aperture 16 extends radially, from the bore 8, into the space 17 between the bore of the tube 12, and the outer wall of the tube 6.

Fluid such as distilled water may be forced up the narrow bore 8 and into the space 17 just described. This will cause the membrane 12 to balloon out into a substantially spherical configuration. The cut-away portion 15 will form a port 18 in the region of the aperture 11.

In use the membrane 12 is deflated so that it closely engages the tube 6 as shown in FIG. 1. The catheter 5 is then inserted so that its leading end 9 enters the bladder 18 with the membrane 12 fully within the bladder and with the aperture 11 adjacent the bladder entrance 19. The membrane 12 is then inflated to the spherical form as shown in FIGS. 2 and 3, so that the catheter will be retained within the bladder 18 with the membrane 12 substantially engaging the bladder entrance. The contents of the bladder can now be withdrawn through the apertures 10 and 11 and down the tube 6 via its larger bore 7. It will be seen that the bladder can be substantially emptied as fluid and solid deposits adjacent the bladder floor 20 can be drawn through the aperture 11 via the port 18 formed by the cut-away portion 15 of the ballooned membrane 12.

In a modified form of the catheter shown in FIG. 4 an integral flap 21 is formed within the bore 7 immediately below the aperture 10. With this form of catheter,

cleaning fluid may be forced up,the larger bore 7 to flush out the bladder 18. It will be seen that during this operation, the flap valve 21 close the tube 7 so that all of the cleaning fluid will be forcedzto emerge from the lower aperture 11. This ensures the deposits on the bladder floor will'be dislodged. The cleaning fluid and entrained deposits can now be drained through the tube 6 as previously described.

Although this invention has been described in the specification and the claims, it will be obvious to a man skilled in the art that minor variations may be made without detracting from the merit of the invention. The specification and claims should be read so as to incorporate such minor variations.

What I claim is:

l. Catheter means comprising an extended flexible tube, said tube housing first and second longitudinal bore means, said first bore means extending for substantially the entire length of the catheter and terminating adjacent the leading end of the tube;

first and second aperture means in the tube communicating with said first bore means;

said first aperture means being located adjacent the leading end of said tube and said second aperture means being spaced from said first aperture means towards the following end of said tube;

thin tubular membrane means positioned around said tube substantially in the region of the tube between said first and said second aperture means and being affixed to an entirely surrounding said tube so that a junction between said membrane and said tube is not above said second aperture means except in the immediate area thereof where said junction is above said second aperture means;

said second bore means extending substantially throughout the length of said catheter;

further aperture means in said tube interconnecting said second bore means and the space between said tube and said thin tubular membrane means; and

port means, through which waste matter may pass from a bladder into which that part of the catheter containing said first and said second aperture means is inserted through said second aperture means and into said first bore means, said port means positioned within the area around said second aperture at the said junctions of the membrane and tube and being formed in said thin tubular membrane means when the space between said thin tubular membrane means and said flexible tube is ballooned by the introduction of fluid into said space.

2. Catheter means as in claim 1 wherein a non-return valve is provided in the flexible tube between the second and first apertures.

Claims (2)

1. Catheter means comprising an extended flexible tube, said tube housing first and second longitudinal bore means, said first bore means extending for substantially the entire length of the catheter and terminating adjacent the leading end of the tube; first and second aperture means in the tube communicating with said first bore means; said first aperture means being located adjacent the leading end of said tube and said second aperture means being spaced from said first aperture means towards the following end of said tube; thin tubular membrane means positioned around said tube substantially in the region of the tube between said first and said second aperture means and being affixed to an entirely surrounding said tube so that a junction between said membrane and said tube is not above said second aperture means except in the immediate area thereof where said junction is above said second aperture means; said second bore means extending substantially throughout the length of said catheter; further aperture means in said tube interconnecting said second bore means and the space between said tube and said thin tubular membrane means; and port means, through which waste matter may pass from a bladder into which that part of the catheter containing said first and said second aperture means is inserted through said second aperture means and into said first bore means, said port means positioned within the area around said second aperture at the said junctions of the membrane and tube and being formed in said thin tubular membrane means when the space between said thin tubular membrane means and said flexible tube is ballooned by the introduction of fluid into said space.
2. Catheter means as in claim 1 wherein a non-return valve is provided in the flexible tube between the second and first apertures.
US3889686A 1972-07-04 1973-06-26 Catheter tube Expired - Lifetime US3889686A (en)

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AU5722173A AU5722173A (en) 1972-07-04 1972-07-04 Catheter tube

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Cited By (64)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3954110A (en) * 1974-01-24 1976-05-04 Hutchison Ernest L Retention catheter with bilobate balloon
FR2375857A1 (en) * 1976-12-29 1978-07-28 Kasper Richard vesical remains a probe
FR2392680A1 (en) * 1977-05-30 1978-12-29 Rocco Francesco Catheter type a balloon
US4211233A (en) * 1978-01-05 1980-07-08 Lin Edward D Urethral catheter
US4224929A (en) * 1977-11-08 1980-09-30 Olympus Optical Co., Ltd. Endoscope with expansible cuff member and operation section
US4342316A (en) * 1981-07-06 1982-08-03 The Kendall Company Zero stasis catheter
US4349029A (en) * 1980-06-16 1982-09-14 Mott Patricia A Drainage balloon catheter system
US4535757A (en) * 1982-03-12 1985-08-20 Webster Wilton W Jr Autoinflatable catheter
US4581017A (en) * 1983-03-07 1986-04-08 Harvinder Sahota Catheter systems
US4857054A (en) * 1988-07-15 1989-08-15 Eastman Kodak Company Perfusion angioplasty catheter with pump assist
US4944745A (en) * 1988-02-29 1990-07-31 Scimed Life Systems, Inc. Perfusion balloon catheter
US4976691A (en) * 1989-01-23 1990-12-11 Harvinder Sahota Topless catheters
US4983167A (en) * 1988-11-23 1991-01-08 Harvinder Sahota Balloon catheters
US5090958A (en) * 1988-11-23 1992-02-25 Harvinder Sahota Balloon catheters
US5092844A (en) * 1990-04-10 1992-03-03 Mayo Foundation For Medical Education And Research Intracatheter perfusion pump apparatus and method
US5137513A (en) * 1990-07-02 1992-08-11 Advanced Cardiovoascular Systems, Inc. Perfusion dilatation catheter
US5143093A (en) * 1990-10-05 1992-09-01 Harvinder Sahota Methods of angioplasty treatment of stenotic regions
US5147377A (en) * 1988-11-23 1992-09-15 Harvinder Sahota Balloon catheters
US5160321A (en) * 1988-11-23 1992-11-03 Harvinder Sahota Balloon catheters
US5295962A (en) * 1992-04-29 1994-03-22 Cardiovascular Dynamics, Inc. Drug delivery and dilatation catheter
US5295995A (en) * 1992-08-27 1994-03-22 Kleiman Jay H Perfusion dilatation catheter
US5320605A (en) * 1993-01-22 1994-06-14 Harvinder Sahota Multi-wire multi-balloon catheter
US5324260A (en) * 1992-04-27 1994-06-28 Minnesota Mining And Manufacturing Company Retrograde coronary sinus catheter
US5344402A (en) * 1993-06-30 1994-09-06 Cardiovascular Dynamics, Inc. Low profile perfusion catheter
US5370617A (en) * 1993-09-17 1994-12-06 Sahota; Harvinder Blood perfusion balloon catheter
US5395331A (en) * 1992-04-27 1995-03-07 Minnesota Mining And Manufacturing Company Retrograde coronary sinus catheter having a ribbed balloon
US5433706A (en) * 1993-10-25 1995-07-18 Cordis Corporation Perfusion balloon catheter
US5484411A (en) * 1994-01-14 1996-01-16 Cordis Corporation Spiral shaped perfusion balloon and method of use and manufacture
US5490837A (en) * 1991-07-05 1996-02-13 Scimed Life Systems, Inc. Single operator exchange catheter having a distal catheter shaft section
US5501667A (en) * 1994-03-15 1996-03-26 Cordis Corporation Perfusion balloon and method of use and manufacture
US5558644A (en) * 1991-07-16 1996-09-24 Heartport, Inc. Retrograde delivery catheter and method for inducing cardioplegic arrest
US5569184A (en) * 1992-04-29 1996-10-29 Cardiovascular Dynamics, Inc. Delivery and balloon dilatation catheter and method of using
WO1996034647A1 (en) * 1995-05-04 1996-11-07 Cedars-Sinai Medical Center Implantable catheter and method of use
US5613948A (en) * 1993-11-12 1997-03-25 Cordis Corporation Annular perfusion balloon catheter
US5645533A (en) * 1991-07-05 1997-07-08 Scimed Life Systems, Inc. Apparatus and method for performing an intravascular procedure and exchanging an intravascular device
US5716325A (en) * 1990-03-02 1998-02-10 General Surgical Innovations, Inc. Arthroscopic retractors and method of using the same
US5755687A (en) * 1997-04-01 1998-05-26 Heartport, Inc. Methods and devices for occluding a patient's ascending aorta
US5765568A (en) * 1994-05-27 1998-06-16 Heartport, Inc. Catheter system and method for venting the left ventricle
US5769812A (en) * 1991-07-16 1998-06-23 Heartport, Inc. System for cardiac procedures
US5792094A (en) * 1991-07-16 1998-08-11 Heartport, Inc. Method of delivering cardioplegic fluid to a patient's heart
US5792300A (en) * 1994-01-21 1998-08-11 Cordis Corporation Perfusion catheter and striped extrusion method of manufacture
US5800393A (en) * 1997-03-07 1998-09-01 Sahota; Harvinder Wire perfusion catheter
US5833706A (en) * 1991-07-05 1998-11-10 Scimed Life Systems, Inc. Single operator exchange perfusion catheter having a distal catheter shaft section
US5935103A (en) * 1991-12-17 1999-08-10 Heartport, Inc. Blood vessel occlusion device
US5947927A (en) * 1998-03-23 1999-09-07 Scimed Life Systems, Inc. Convertible catheter having a single proximal lumen
US5951514A (en) * 1997-03-07 1999-09-14 Sahota; Harvinder Multi-lobe perfusion balloon
US5976107A (en) * 1991-07-05 1999-11-02 Scimed Life Systems. Inc. Catheter having extendable guide wire lumen
US6090069A (en) * 1997-08-05 2000-07-18 Walker; Frank J. Irrigation and drainage urinary catheter
US6159178A (en) * 1998-01-23 2000-12-12 Heartport, Inc. Methods and devices for occluding the ascending aorta and maintaining circulation of oxygenated blood in the patient when the patient's heart is arrested
US6245040B1 (en) 1994-01-14 2001-06-12 Cordis Corporation Perfusion balloon brace and method of use
US6482171B1 (en) 1991-07-16 2002-11-19 Heartport, Inc. Multi-lumen catheter
WO2003070310A1 (en) * 2002-02-21 2003-08-28 Chul-Jun Kim Indwelling urinary catheter
US20060195135A1 (en) * 2005-02-25 2006-08-31 Ihab Ayoub Pass-through catheter
US20080167628A1 (en) * 2007-01-05 2008-07-10 Boston Scientific Scimed, Inc. Stent delivery system
US20100016834A1 (en) * 2008-04-14 2010-01-21 Innoventions Ltd. Device, system, and method for releasing substances in a body cavity
US8747439B2 (en) 2000-03-13 2014-06-10 P Tech, Llc Method of using ultrasonic vibration to secure body tissue with fastening element
US8808329B2 (en) 1998-02-06 2014-08-19 Bonutti Skeletal Innovations Llc Apparatus and method for securing a portion of a body
US8814902B2 (en) 2000-05-03 2014-08-26 Bonutti Skeletal Innovations Llc Method of securing body tissue
US8845699B2 (en) 1999-08-09 2014-09-30 Bonutti Skeletal Innovations Llc Method of securing tissue
US8845687B2 (en) 1996-08-19 2014-09-30 Bonutti Skeletal Innovations Llc Anchor for securing a suture
US8961494B2 (en) 2005-09-12 2015-02-24 Bridgepoint Medical, Inc. Endovascular devices and methods for exploiting intramural space
GB2517698A (en) * 2013-08-27 2015-03-04 John Spencer Havard The Holey Catheter is a retained urethral device that allows complete bladder emptying. Mucosal damage is less with a shorter intra-vesical tube
WO2015191125A1 (en) * 2014-06-13 2015-12-17 Leading Age Supplies LLC Catheter having a tapered structure and balloon formed above a lower drainage hole
US9770238B2 (en) 2001-12-03 2017-09-26 P Tech, Llc Magnetic positioning apparatus

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US5120316A (en) * 1990-09-28 1992-06-09 Akzo N.V. Urethral catheter and catheterization process
GB0913604D0 (en) * 2009-08-05 2009-09-16 Theriault Robert Catheter

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US3726283A (en) * 1971-10-07 1973-04-10 Kendall & Co Body-retained catheter
US3736939A (en) * 1972-01-07 1973-06-05 Kendall & Co Balloon catheter with soluble tip
US3811448A (en) * 1972-10-25 1974-05-21 A Morton Urinary drainage catheter

Cited By (86)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3954110A (en) * 1974-01-24 1976-05-04 Hutchison Ernest L Retention catheter with bilobate balloon
FR2375857A1 (en) * 1976-12-29 1978-07-28 Kasper Richard vesical remains a probe
FR2392680A1 (en) * 1977-05-30 1978-12-29 Rocco Francesco Catheter type a balloon
US4224929A (en) * 1977-11-08 1980-09-30 Olympus Optical Co., Ltd. Endoscope with expansible cuff member and operation section
US4211233A (en) * 1978-01-05 1980-07-08 Lin Edward D Urethral catheter
US4349029A (en) * 1980-06-16 1982-09-14 Mott Patricia A Drainage balloon catheter system
US4342316A (en) * 1981-07-06 1982-08-03 The Kendall Company Zero stasis catheter
US4535757A (en) * 1982-03-12 1985-08-20 Webster Wilton W Jr Autoinflatable catheter
US4581017A (en) * 1983-03-07 1986-04-08 Harvinder Sahota Catheter systems
US4944745A (en) * 1988-02-29 1990-07-31 Scimed Life Systems, Inc. Perfusion balloon catheter
US4857054A (en) * 1988-07-15 1989-08-15 Eastman Kodak Company Perfusion angioplasty catheter with pump assist
US5147377A (en) * 1988-11-23 1992-09-15 Harvinder Sahota Balloon catheters
US4983167A (en) * 1988-11-23 1991-01-08 Harvinder Sahota Balloon catheters
US5090958A (en) * 1988-11-23 1992-02-25 Harvinder Sahota Balloon catheters
US5160321A (en) * 1988-11-23 1992-11-03 Harvinder Sahota Balloon catheters
US4976691A (en) * 1989-01-23 1990-12-11 Harvinder Sahota Topless catheters
US5716325A (en) * 1990-03-02 1998-02-10 General Surgical Innovations, Inc. Arthroscopic retractors and method of using the same
US5092844A (en) * 1990-04-10 1992-03-03 Mayo Foundation For Medical Education And Research Intracatheter perfusion pump apparatus and method
US5137513A (en) * 1990-07-02 1992-08-11 Advanced Cardiovoascular Systems, Inc. Perfusion dilatation catheter
US5143093A (en) * 1990-10-05 1992-09-01 Harvinder Sahota Methods of angioplasty treatment of stenotic regions
US5645533A (en) * 1991-07-05 1997-07-08 Scimed Life Systems, Inc. Apparatus and method for performing an intravascular procedure and exchanging an intravascular device
US5833706A (en) * 1991-07-05 1998-11-10 Scimed Life Systems, Inc. Single operator exchange perfusion catheter having a distal catheter shaft section
US5490837A (en) * 1991-07-05 1996-02-13 Scimed Life Systems, Inc. Single operator exchange catheter having a distal catheter shaft section
US5976107A (en) * 1991-07-05 1999-11-02 Scimed Life Systems. Inc. Catheter having extendable guide wire lumen
US5792094A (en) * 1991-07-16 1998-08-11 Heartport, Inc. Method of delivering cardioplegic fluid to a patient's heart
US6482171B1 (en) 1991-07-16 2002-11-19 Heartport, Inc. Multi-lumen catheter
US5885238A (en) * 1991-07-16 1999-03-23 Heartport, Inc. System for cardiac procedures
US5558644A (en) * 1991-07-16 1996-09-24 Heartport, Inc. Retrograde delivery catheter and method for inducing cardioplegic arrest
US5738652A (en) * 1991-07-16 1998-04-14 Heartport, Inc. Retrograde delivery catheter and method for inducing cardioplegic arrest
US5769812A (en) * 1991-07-16 1998-06-23 Heartport, Inc. System for cardiac procedures
US5941894A (en) * 1991-12-17 1999-08-24 Heartport, Inc. Blood vessel occlusion device
US6224619B1 (en) 1991-12-17 2001-05-01 Heartport, Inc. Blood vessel occlusion trocar having size and shape varying insertion body
US5935103A (en) * 1991-12-17 1999-08-10 Heartport, Inc. Blood vessel occlusion device
US5997505A (en) * 1991-12-17 1999-12-07 Heartport, Inc. Method of cannulating an ascending aorta using a blood vessel occlusion device
US5395331A (en) * 1992-04-27 1995-03-07 Minnesota Mining And Manufacturing Company Retrograde coronary sinus catheter having a ribbed balloon
US5324260A (en) * 1992-04-27 1994-06-28 Minnesota Mining And Manufacturing Company Retrograde coronary sinus catheter
US5421826A (en) * 1992-04-29 1995-06-06 Cardiovascular Dynamics, Inc. Drug delivery and dilatation catheter having a reinforced perfusion lumen
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