US3394705A - Drainage balloon catheter having means for antiseptic treatment of the urethra - Google Patents

Drainage balloon catheter having means for antiseptic treatment of the urethra Download PDF

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US3394705A
US3394705A US50168765A US3394705A US 3394705 A US3394705 A US 3394705A US 50168765 A US50168765 A US 50168765A US 3394705 A US3394705 A US 3394705A
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tube
catheter
bladder
bag
region
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Daniel J Abramson
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Daniel J. Abramson
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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
    • A61M25/0017Catheters; Hollow probes specially adapted for long-term hygiene care, e.g. urethral or indwelling catheters to prevent infections

Description

y 0, 1968 D. J. ABRAMSON 3,394,705

DRAINAGE BALLOON CATHETER HAVING MEANS FOR ANTISEPTIC TREATMENT OF THE URETHRA Filed Oct. 22. 1965 H6 2 6" FIG. 3

f DANIEL J. ABRAMSON ATTORNEY United States Patent 3,394,705 DRAlNAGE BALLOON CATHETER HAVING MEANS FOR ANTISEPTIC TREATMENT OF THE URETHRA Daniel J. Abramson, 2800 Greenval St., Chevy Chase, Md. 20015 Filed Oct. 22, 1965, Ser. No. 501,687 Claims. (Cl. 128-649) ABSTRACT OF THE DISCLOSURE A catheter for draining either a male or female bladder comprising a small diameter tube for loosely fitting within and of sufficient length to pass entirely through the urethra, said tube having bore and outside diameters of substantially contant sizes and being open at its distal end for entrance of fluid to be drained from the bladder, an inflatable bag positioned very close to the distal end of the tube and adapted to seat wholly within the bladder, a chamber for antiseptic fluid encircling the tube and spaced slightly outwardly of said bag and extending only a very short distance lengthwise of the tube, said chamber being provided with small apertures to permit circumferential escape of an antiseptic fluid for fine spray irrigation of the urethra in the region immediately adjacent the bladder, and first and second passageways within said tube separate from said tube bore and extending from the proximal end of the tube to and communicating with said inflatable bag and chamber.

This invention relates to improvements in catheters and more particularly to a catheter provided with means for irrigating the region of a connecting body passage just outside the cavity adapted to be drained by a conventional catheter. The improved catheter also permits drainage of infected fluid or other matter from said region with or without the application of suction.

With the standard Foley retention catheter, or any conventional catheter, inserted into the bladder via the urethra there is an accumulation of exudate about the catheter portion residing in the urethra. This exudate is rich in protein and is an excellent culture medium for the introduction of infection from outside the body to involve the urinary tract, including the bladder, ureter and kidney or accessory append-ages such as the prostate and seminal vesicles. Currently, there is no means of ridding the urethra of this exudate nor provision made for irrigation and instillation of antiseptics or antibiotics.

It is a primary object of the present invention to provide an improved catheter which will overcome the above stated disadvantages of conventional catheters.

Another important object of the invention is to provide an improved catheter which will enable drainage and irrigation of infectious matter from the body of a patient in the region outside the body cavity being drained by the catheter bore.

It is an important object of the present invention to provide an improved catheter tube incorporating a passageway separate from the catheter bore and extending to a region spaced from the distal end in which region the passageway is closed except to communication with the exterior surface of the catheter tube.

It is another object of the invention to provide an improved catheter, of the above described characteristics which presents a smooth external surface of substantially constant diameter to ease insertion and withdrawal.

A further object of the invention is to provide a catheter having an inflatable retention bag and provided with passage means leading to the exterior of the tube in the region adjacent the inflatable bag and opposite the distal end of the tube for irrigating and draining infectious matter from a body tract outside the cavity being drained by the bore of the tube.

A still further object of the invention is to provide an improved catheter which is easy and economical to make, easy to use and etficient to perform its intended function.

The novel features that are considered characteristic of the invention are set forth with particularity in the appended claims. The invention itself, however, both as to its organization and its method of operation, together with additional objects and advantages thereof, will best be understood from the following description of a specific embodiment when read in connection with the accompanying drawings, wherein like reference characters indicate like parts throughout the several figures and in which:

FIG. 1 is a diagrammatic perspective view of a catheter according to the invention inserted in position ready to drain the bladder of a patient;

FIG. 2 is a perspective view of the improved catheter;

FIG. 3 is an enlarged fragmentary view similar to FIG. 1 and having a portion of the tube broken away to reveal internal details; and

FIGS. 47 are enlarged sections taken on lines 4-4, 5-5, 66, and 77 of FIG. 2, respectively, and looking in the direction of the arrows.

Referring now more particularly to the drawings, an improved catheter 10, according to the invention, is shown in FIG. 1 positioned with its distal end 12 and inflated bag 14 within a patients bladder 16 ready to drain the bladder. Frequently the catheter must remain so positioned for long periods of time extending into days and even weeks. During such periods infected fluids accumulate in the urethra adjacent the retention bag 14 and just outside the bladder in the region referenced 18. From this region the infection may spread internally. My improved catheter enables the infected region 18 to be irrigated by injection of antiseptics and antibiotics through the small openings 20 without removal of the catheter. Further, the infected fluids may be drained through said openings with or without the application of suction.

FIGS. 27 disclose the construction of my improved catheter as comprising a tube 22 of substantial length terminating at its distal end 12 in a closed, hardened and rounded tip and having a bore 24 extending the full length and communicating with the exterior at the tip 12 by a number of apertures 26. Immediately below the apertures as viewed in FIGS. 2 and 3 is a retention bag 14 adapted to receive a fluid for inflating the bag after insertion in the cavity to be drained. Such fluid is applied through the tubing 34 which extends from the proximal end of tube 22 to bag 14 and which is integrally formed, or bonded, to the internal bore surface of tube 22. As thus far described the catheter has substantially the construction of a conventional Foley retention catheter. The major improvement to the conventional device involves the formation of an internal chamber 28 just below the bag 14 and having openings 20 in the wall of tube 22 communicating with the exterior of the tube in the region 18 which lies outside the bladder or other body cavity being drained. Preferably the openings 20 are uniformly spaced in a spiral so that irrigation and drainage through them will be uniform. The outside surface of tube 22 remains smooth in the region 18 so as not to form inaccessible pockets or irriate the body tissue.

The interior Wall of chamber 28 is formed of a second tube 32 of smaller external diameter than the bore 24 and provided with integral upper and lower annular flanges 36 and 38 which are integrally formed or bonded 'with bore surface of tube 22. The closed chamber 28 thus formed is fed with antiseptics, antibiotics and the like through passageway 40 formed of a tube similar to tube 34 and similarly integrated within the wall of tube 22. Passage 40 has an outlet 42 through the wall of tube 32 near its bottom serving as an inlet to chamber 28. The passage 34 is continued upwardly in FIG. 3 along the inside of the tube 32 to an inlet opening 44 through tube 22 into the bag 14.

The improved catheter may be formed of rubber plastic or other materials as conventional in the art by molding, extruding, vulcanizing and other known techniques. A simple way to make the catheter is to form the tube 22 of constant bore with tip 12 and apertures 26 and 20 with added bag 14 and passage tubing 34 by conventional molding process. The tube 32 with integral flanges 36 and 38 may then be slipped into tube 22, positioned correctly and vulcanized or otherwise bonded thereto at the flanges. Alternatively, a conventional catheter may be formed in longitudinal sections and the tubing in region 18, FIG. 3 enclosing chamber 28 slipped between and bonded to adjacent sections.

The manner of using the described catheter is obvious. The catheter is inserted to drain the bladder as shown in FIG. 1, tubin'gs 34 and 40 being closed by stoppers 46 and tube 22 being connected to a drain or suction pipe 47. Periodically, or when found to be necessary, the surgeon may remove stopper 46 and apply suction to tubing 40 for removal of infected matter from the urethra in region 18 outside the bladder. As necessary an antiseptic fluid may be injected through tubing 40 to irrigate the same region and prevent the spread of infection. If desired, fluid may be allowed to drain through tubing 40 without suction.

While the described catheter has for illustration been directed to an urethral catheter, obviously it is applicable with but slight modification to catheters of other types for treatment of cavities other than the bladder.

Although a certain specific embodiment of the invention has been shown and described, it is obvious that many modifications thereof are possible. The invention, therefore, is not to be restricted except insofar as is necessitated by the prior art and by the spirit of the appended claims.

What is claimed is:

1. A catheter for draining either a male or female bladder, comprising a small diameter tube of resilient material to loosely fit within and of sufficient length to pass entirely through the urethra for insertion into the bladder, said tube having bore and external cross-sections of substantially constant size throughout its length and being open at its distal end for entrance of fluid to be drained from the bladder, an inflatable bag secured to said tube very close to its distal end and adapted to seat wholly within the bladder upon insertion of the tube and inflation of the bag, a chamber for antiseptic fluid encircling said tube spaced slightly toward the proximal end of the tube from said bag, said chamber being positionable wholly within the urethra in the area near the bladder neck and extending for only a very short distance lengthwise of the tube, small apertures in the wall of said chamber and completely about the chamber to permit circumferential escape of an antiseptic fluid to the exterior of said chamber and tube for fine spray irrigation of the urethra in the region immediately adjacent the bladder, and first and second passageways Within said tube separate from each other and said tube bore and extending from the proximal end of the tube to and communicating with said inflatable bag and chamber respectively, whereby irrigation of the urethra in the space surrounding said tube can be performed simultaneously with drainage of the bladder through said tube, While said inflated bag is held within the bladder against the bladder neck to seal against passage of the antiseptic fluid into the bladder.

2. A catheter according to claim 1 wherein said first and second passageways each has a cross-sectional area much smaller than that of the bore of said tube.

3. A catheter according to claim 1 wherein said passageways are within the Wall of the tube leaving a smooth exterior surface on the tube.

4. A catheter according to claim 1 wherein said chamber is enclosed between the Wall of the tube and a short second tube of smaller cross-section positioned within the first tube, said first and second tubes being bonded to each other at both ends of the second tube.

5. A catheter according to claim 4 wherein said second tube has outwardly projecting circumferential end flanges integrally bonded to the inner surface of the first tube.

References Cited UNITED STATES PATENTS 256,590 4/1882 Pfarre 128-349 386,603 4/1888 Parsons l28-240 1,602,215 10/1926 Smith 12824O 2,257,369 9/1941 Davis 128-349 2,547,758 4/ 1951 Keeling 128--3,49 2,854,982 10/1958 Pagano 128-348 FOREIGN PATENTS 462,423 1/ 1914 France.

42,157 1/1888 Germany.

DALTON L. TRULUCK, Primary Examiner.

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Cited By (120)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3447161A (en) * 1966-08-01 1969-06-03 Avco Corp Disinfectant dispensing percutaneous connector
US3583404A (en) * 1969-06-23 1971-06-08 Kendall & Co Nonblocking catheter
US3593713A (en) * 1968-07-12 1971-07-20 Stanley A Bogoff Catheter combination
US3642004A (en) * 1970-01-05 1972-02-15 Life Support Equipment Corp Urethral valve
US3807408A (en) * 1972-01-17 1974-04-30 D Summers Retention catheter
US3822702A (en) * 1973-06-25 1974-07-09 Population Res Inc Dispensing method and apparatus
US3871374A (en) * 1973-09-06 1975-03-18 Population Res Inc Dispensing instrument
US3902492A (en) * 1973-05-14 1975-09-02 Roger Malcolm Greenhalgh Catheter
US3929126A (en) * 1974-09-26 1975-12-30 Jay C Corsaut Surgical suction irrigator
US3972331A (en) * 1973-03-09 1976-08-03 Population Research Incorporated Dispensing catheter
US3977408A (en) * 1974-11-01 1976-08-31 Mackew Allan H Prosthetic catheter
US3981299A (en) * 1971-03-15 1976-09-21 Harry Elmer Murray Urethral catheter
US4004588A (en) * 1975-05-21 1977-01-25 Wrightson Nma Limited Apparatus for flushing ova from cows or mares
USRE29207E (en) * 1973-06-25 1977-05-10 Population Research Incorporated Dispensing method and apparatus
US4126134A (en) * 1973-06-13 1978-11-21 Population Research Incorporated Dispensing instrument
US4156428A (en) * 1974-08-26 1979-05-29 Henkin Melvyn Lane Tracheal tube with expandable cuff system
US4178936A (en) * 1976-08-02 1979-12-18 Milk Marketing Board Apparatus for use in collecting eggs from animals
US4211233A (en) * 1978-01-05 1980-07-08 Lin Edward D Urethral catheter
US4227533A (en) * 1978-11-03 1980-10-14 Bristol-Myers Company Flushable urinary catheter
US4327721A (en) * 1978-07-07 1982-05-04 George Hanover Endotracheal tube with topical agent delivery system and method of using the same
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
FR2530149A1 (en) * 1982-07-14 1984-01-20 Urotek Inc Urethral catheter intended to include cystometry exams
US4501580A (en) * 1980-12-12 1985-02-26 Glassman Jacob A Indwelling catheters
EP0145505A2 (en) * 1983-12-15 1985-06-19 THE PROCTER & GAMBLE COMPANY Drainage and infusion catheters having a capillary sleeve forming a reservoir for a fluid antimicrobial agent
US4538621A (en) * 1983-01-25 1985-09-03 Urotek Inc. Urodynamic catheter
US4564361A (en) * 1975-11-18 1986-01-14 Hiroshi Akiyama Catheter
US4571241A (en) * 1983-12-16 1986-02-18 Christopher T Graham Urinary catheter with collapsible urethral tube
US4579554A (en) * 1984-01-30 1986-04-01 Glassman Jacob A Indwelling urinary catheter
US4589868A (en) * 1984-03-12 1986-05-20 Dretler Stephen P Expandable dilator-catheter
US4631054A (en) * 1984-11-16 1986-12-23 Kim Il G Apparatus and process for naso-intestinal intubation
US4681564A (en) * 1985-10-21 1987-07-21 Landreneau Michael D Catheter assembly having balloon extended flow path
US4692141A (en) * 1982-03-08 1987-09-08 Mahurkar Sakharam D Double lumen catheter
US4693243A (en) * 1983-01-14 1987-09-15 Buras Sharon Y Conduit system for directly administering topical anaesthesia to blocked laryngeal-tracheal areas
US4696304A (en) * 1984-09-10 1987-09-29 Thomas J. Fogarty Thermodilution flow-directed catheter assembly and method
US4710169A (en) * 1983-12-16 1987-12-01 Christopher T Graham Urinary catheter with collapsible urethral tube
US4770652A (en) * 1985-02-12 1988-09-13 Mahurkar Sakharam D Method and apparatus for using dual-lumen catheters for extracorporeal treatment
US4781699A (en) * 1986-02-08 1988-11-01 Nissho Corportion Mucus-removing device
US4795439A (en) * 1986-06-06 1989-01-03 Edward Weck Incorporated Spiral multi-lumen catheter
US4804358A (en) * 1985-02-20 1989-02-14 Medicorp Research Laboratories Corporation Coronary perfusion pump
US4808155A (en) * 1986-02-27 1989-02-28 Mahurkar Sakharam D Simple double lumen catheter
US4842583A (en) * 1987-12-23 1989-06-27 Heshmat Majlessi Colonic irrigation tube
US4919651A (en) * 1988-04-15 1990-04-24 Santa Barbara Medical Foundation Clinic Catheter having a double lumen and a balloon and method of using the same for controlled operative cholangiography
US5007897A (en) * 1989-05-30 1991-04-16 Kalb Irvin M Drug delivery catheter
US5024668A (en) * 1987-01-20 1991-06-18 Rocky Mountain Research, Inc. Retrograde perfusion system, components and method
US5082006A (en) * 1987-09-15 1992-01-21 Linda Jonasson Device for preventing involuntary micturition
US5096454A (en) * 1990-08-16 1992-03-17 Samples Charles R Method of catheterization and bladder drainage
US5098379A (en) * 1990-01-10 1992-03-24 Rochester Medical Corporation Catheter having lubricated outer sleeve and methods for making and using same
US5137671A (en) * 1990-01-10 1992-08-11 Rochester Medical Corporation Methods of making balloon catheters
US5197952A (en) * 1990-06-13 1993-03-30 Dlp, Inc. Auto-inflating catheter cuff
US5197951A (en) * 1983-12-14 1993-03-30 Mahurkar Sakharam D Simple double lumen catheter
US5221256A (en) * 1992-02-10 1993-06-22 Mahurkar Sakharam D Multiple-lumen catheter
US5221255A (en) * 1990-01-10 1993-06-22 Mahurkar Sakharam D Reinforced multiple lumen catheter
US5248304A (en) * 1992-05-29 1993-09-28 Michael Vigdorchik Single use intrauterine injector
US5261896A (en) * 1990-01-10 1993-11-16 Rochester Medical Corporation Sustained release bactericidal cannula
US5306250A (en) * 1992-04-02 1994-04-26 Indiana University Foundation Method and apparatus for intravascular drug delivery
US5306226A (en) * 1989-02-09 1994-04-26 Salama Fouad A Urinary control with inflatable seal and method of using same
US5308338A (en) * 1993-04-22 1994-05-03 Helfrich G Baird Catheter or the like with medication injector to prevent infection
US5314409A (en) * 1993-03-11 1994-05-24 Uva Patents Foundation Catheter for esophageal perfusion
US5313939A (en) * 1991-10-11 1994-05-24 University Of Pittsburgh Of The Commonwealth System Of Higher Education Endotracheal™ tube for topical substance delivery and associated method of use
US5348536A (en) * 1993-08-02 1994-09-20 Quinton Instrument Company Coextruded catheter and method of forming
DE4310378A1 (en) * 1993-03-30 1994-10-06 Aigner Karl Balloon catheter and apparatus for isolated Persfusion by means of the balloon catheter
US5374245A (en) * 1990-01-10 1994-12-20 Mahurkar; Sakharam D. Reinforced multiple-lumen catheter and apparatus and method for making the same
US5383866A (en) * 1993-09-15 1995-01-24 Chang; Hau H. Occlusion ureteral catheter for retrograde pyelography
US5389074A (en) * 1993-10-27 1995-02-14 The Regents Of The University Of California Body insertion tube with anesthetic jacket
US5403291A (en) * 1993-08-02 1995-04-04 Quinton Instrument Company Catheter with elongated side holes
US5417657A (en) * 1993-10-06 1995-05-23 Hauer; Carolyn No-sepsis urinary drainage catheter
US5425708A (en) * 1991-12-13 1995-06-20 Nissho Corporation Catheter with an aorta-occluding balloon
US5443447A (en) * 1992-09-24 1995-08-22 Amin I. Kassis Intracavitary delivery or withdrawal device
US5486159A (en) * 1993-10-01 1996-01-23 Mahurkar; Sakharam D. Multiple-lumen catheter
US5501669A (en) * 1990-01-10 1996-03-26 Rochester Medical Corporation Urinary catheter with reservoir shroud
US5522801A (en) * 1995-01-18 1996-06-04 Wang; Abe Integrate-forming silicone balloon catheter
US5536250A (en) * 1994-04-01 1996-07-16 Localmed, Inc. Perfusion shunt device and method
US5556390A (en) * 1995-03-07 1996-09-17 Quinton Instrument Company Catheter with oval or elliptical lumens
US5558620A (en) * 1993-02-05 1996-09-24 Richard Wolf Gmbh Medical instrument employing curved spreading members to manipulate organs within the body
US5562620A (en) * 1994-04-01 1996-10-08 Localmed, Inc. Perfusion shunt device having non-distensible pouch for receiving angioplasty balloon
US5571086A (en) * 1992-11-02 1996-11-05 Localmed, Inc. Method and apparatus for sequentially performing multiple intraluminal procedures
US5591128A (en) * 1995-03-03 1997-01-07 Sithole; Deborah I. Gastrostomy tube
US5593718A (en) * 1990-01-10 1997-01-14 Rochester Medical Corporation Method of making catheter
US5599306A (en) * 1994-04-01 1997-02-04 Localmed, Inc. Method and apparatus for providing external perfusion lumens on balloon catheters
US5713861A (en) * 1994-10-17 1998-02-03 Vanarthos; William Trauma urethral catheter and method of using same
US5718678A (en) * 1996-06-26 1998-02-17 Medical Components, Inc. Multi-lumen coaxial catheter and method for making same
US5797869A (en) * 1987-12-22 1998-08-25 Vas-Cath Incorporated Multiple lumen catheter
US5830196A (en) * 1995-09-21 1998-11-03 Tyco Group S.A.R.L. Tapered and reinforced catheter
WO1999007420A1 (en) 1997-08-11 1999-02-18 Novadent Ltd. Irrigation catheter
US5891457A (en) * 1997-05-12 1999-04-06 Neuwirth; Robert S. Intrauterine chemical necrosing method, composition, and apparatus
US5971954A (en) * 1990-01-10 1999-10-26 Rochester Medical Corporation Method of making catheter
US6187346B1 (en) 1995-06-07 2001-02-13 Ablation Products, Inc. Intrauterine chemical cauterizing method and composition
US6197351B1 (en) 1995-06-07 2001-03-06 Robert S. Neuwirth Intrauterine chemical necrosing method and composition
US20010003795A1 (en) * 1997-07-22 2001-06-14 Mitta Suresh Catheter system and method for posterior epicardial revascularization and intracardiac surgery on a beating heart
US6248121B1 (en) 1998-02-18 2001-06-19 Cardio Medical Solutions, Inc. Blood vessel occlusion device
US6280423B1 (en) 1998-02-24 2001-08-28 Scimed Life Systems, Inc. High flow rate dialysis catheters and related methods
US6332892B1 (en) 1999-03-02 2001-12-25 Scimed Life Systems, Inc. Medical device with one or more helical coils
US6383434B2 (en) 1990-01-10 2002-05-07 Rochester Medical Corporation Method of shaping structures with an overcoat layer including female urinary catheter
US6394996B1 (en) 1997-01-07 2002-05-28 C. R. Bard, Inc. System for aspirating and irrigating tract wounds
US20030163082A1 (en) * 2002-02-26 2003-08-28 Mertens Steven P. Lumen weld
US6620202B2 (en) 2001-10-16 2003-09-16 Scimed Life Systems, Inc. Medical stent with variable coil and related methods
US6656146B1 (en) 1995-11-07 2003-12-02 Scimed Life Systems, Inc. Medical device with tail(s)
US20040004311A1 (en) * 2002-02-26 2004-01-08 Scimed Life Systems, Inc. Tacking method and apparatus
US6676623B2 (en) 2001-05-04 2004-01-13 Scimed Life Systems, Inc. Drainage devices and methods
US6719804B2 (en) 2001-04-02 2004-04-13 Scimed Life Systems, Inc. Medical stent and related methods
US20050203564A1 (en) * 1998-07-23 2005-09-15 Nobles Anthony A. Blood vessel occlusion device
US20050288630A1 (en) * 2004-01-22 2005-12-29 Conway Anthony J Cuff resistant foley catheter
US6991614B2 (en) 1995-11-07 2006-01-31 Boston Scientific Scimed, Inc. Ureteral stent for improved patient comfort
US20060079845A1 (en) * 2004-10-08 2006-04-13 Eben Howard And Pamela A. Howard Movable inflatable anchor for medical devices
US20060079838A1 (en) * 2004-10-08 2006-04-13 Walker Steven C Movable Balloon anchor for medical devices
US20060129136A1 (en) * 2004-12-09 2006-06-15 Meacham George B K Catheter
US20060229576A1 (en) * 2005-04-12 2006-10-12 Conway Anthony J Male external catheter with absorbent
GB2448892A (en) * 2007-05-01 2008-11-05 Jotillou Entpr Ltd Urinary catheter having three lumens and a distal valve
WO2009010070A1 (en) * 2007-07-13 2009-01-22 Coloplast A/S A tip for an insertion device
US20090240234A1 (en) * 2008-03-18 2009-09-24 Anthony Doerr Catheter with biologic adhesive injection ports and method of injecting biologic adhesive therewith
US20100106051A1 (en) * 2008-10-24 2010-04-29 Innerspace, Inc. Single lumen catheter with separate tubes therein
US20140094760A1 (en) * 2006-10-17 2014-04-03 C. R. Bard, Inc. Waste Management System
US20170020645A1 (en) * 2009-12-18 2017-01-26 Coloplast A/S Method of treating urinary incontinence
US9642616B2 (en) 2005-06-20 2017-05-09 Nobles Medical Technologies, Inc. Method and apparatus for applying a knot to a suture
US9649106B2 (en) 2011-04-15 2017-05-16 Heartstitch, Inc. Suturing devices and methods for suturing an anatomic valve
US9706988B2 (en) 2012-05-11 2017-07-18 Heartstitch, Inc. Suturing devices and methods for suturing an anatomic structure
US9707375B2 (en) 2011-03-14 2017-07-18 Rochester Medical Corporation, a subsidiary of C. R. Bard, Inc. Catheter grip and method
US9713699B2 (en) 2014-12-22 2017-07-25 Neogenix, Llc Transport and storage apparatus for wound care exudate
US9872969B2 (en) 2012-11-20 2018-01-23 Rochester Medical Corporation, a subsidiary of C.R. Bard, Inc. Catheter in bag without additional packaging

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE42157C (en) *
US256590A (en) * 1882-04-18 Double catheter
US386603A (en) * 1888-07-24 Stomach-pump
FR462423A (en) * 1912-11-21 1914-01-27 Louis Marie Clement Charnaux Drain armed helical
US1602215A (en) * 1926-04-08 1926-10-05 Chester H Smith Douche nozzle
US2257369A (en) * 1939-10-21 1941-09-30 Thomas A Davis Catheter and drainage tube
US2547758A (en) * 1949-01-05 1951-04-03 Wilmer B Keeling Instrument for treating the male urethra
US2854982A (en) * 1958-01-22 1958-10-07 Vito V Pagano Nasopharyngeal tube

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE42157C (en) *
US256590A (en) * 1882-04-18 Double catheter
US386603A (en) * 1888-07-24 Stomach-pump
FR462423A (en) * 1912-11-21 1914-01-27 Louis Marie Clement Charnaux Drain armed helical
US1602215A (en) * 1926-04-08 1926-10-05 Chester H Smith Douche nozzle
US2257369A (en) * 1939-10-21 1941-09-30 Thomas A Davis Catheter and drainage tube
US2547758A (en) * 1949-01-05 1951-04-03 Wilmer B Keeling Instrument for treating the male urethra
US2854982A (en) * 1958-01-22 1958-10-07 Vito V Pagano Nasopharyngeal tube

Cited By (156)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3447161A (en) * 1966-08-01 1969-06-03 Avco Corp Disinfectant dispensing percutaneous connector
US3593713A (en) * 1968-07-12 1971-07-20 Stanley A Bogoff Catheter combination
US3583404A (en) * 1969-06-23 1971-06-08 Kendall & Co Nonblocking catheter
US3642004A (en) * 1970-01-05 1972-02-15 Life Support Equipment Corp Urethral valve
US3981299A (en) * 1971-03-15 1976-09-21 Harry Elmer Murray Urethral catheter
US3807408A (en) * 1972-01-17 1974-04-30 D Summers Retention catheter
US3972331A (en) * 1973-03-09 1976-08-03 Population Research Incorporated Dispensing catheter
US3902492A (en) * 1973-05-14 1975-09-02 Roger Malcolm Greenhalgh Catheter
US4126134A (en) * 1973-06-13 1978-11-21 Population Research Incorporated Dispensing instrument
US3822702A (en) * 1973-06-25 1974-07-09 Population Res Inc Dispensing method and apparatus
USRE29207E (en) * 1973-06-25 1977-05-10 Population Research Incorporated Dispensing method and apparatus
US3871374A (en) * 1973-09-06 1975-03-18 Population Res Inc Dispensing instrument
US4156428A (en) * 1974-08-26 1979-05-29 Henkin Melvyn Lane Tracheal tube with expandable cuff system
US3929126A (en) * 1974-09-26 1975-12-30 Jay C Corsaut Surgical suction irrigator
US3977408A (en) * 1974-11-01 1976-08-31 Mackew Allan H Prosthetic catheter
US4004588A (en) * 1975-05-21 1977-01-25 Wrightson Nma Limited Apparatus for flushing ova from cows or mares
US4564361A (en) * 1975-11-18 1986-01-14 Hiroshi Akiyama Catheter
US4178936A (en) * 1976-08-02 1979-12-18 Milk Marketing Board Apparatus for use in collecting eggs from animals
US4211233A (en) * 1978-01-05 1980-07-08 Lin Edward D Urethral catheter
US4327721A (en) * 1978-07-07 1982-05-04 George Hanover Endotracheal tube with topical agent delivery system and method of using the same
US4227533A (en) * 1978-11-03 1980-10-14 Bristol-Myers Company Flushable urinary catheter
US4349029A (en) * 1980-06-16 1982-09-14 Mott Patricia A Drainage balloon catheter system
US4501580A (en) * 1980-12-12 1985-02-26 Glassman Jacob A Indwelling catheters
US4342316A (en) * 1981-07-06 1982-08-03 The Kendall Company Zero stasis catheter
US4692141A (en) * 1982-03-08 1987-09-08 Mahurkar Sakharam D Double lumen catheter
FR2530149A1 (en) * 1982-07-14 1984-01-20 Urotek Inc Urethral catheter intended to include cystometry exams
US4693243A (en) * 1983-01-14 1987-09-15 Buras Sharon Y Conduit system for directly administering topical anaesthesia to blocked laryngeal-tracheal areas
US4538621A (en) * 1983-01-25 1985-09-03 Urotek Inc. Urodynamic catheter
US5197951A (en) * 1983-12-14 1993-03-30 Mahurkar Sakharam D Simple double lumen catheter
EP0145505A2 (en) * 1983-12-15 1985-06-19 THE PROCTER & GAMBLE COMPANY Drainage and infusion catheters having a capillary sleeve forming a reservoir for a fluid antimicrobial agent
EP0145505A3 (en) * 1983-12-15 1986-07-23 THE PROCTER & GAMBLE COMPANY Drainage and infusion catheters having a capillary sleeve forming a reservoir for a fluid antimicrobial agent
US4623329A (en) * 1983-12-15 1986-11-18 The Procter & Gamble Company Drainage and infusion catheters having a capillary sleeve forming a reservoir for a fluid antimicrobial agent
US4710169A (en) * 1983-12-16 1987-12-01 Christopher T Graham Urinary catheter with collapsible urethral tube
US4571241A (en) * 1983-12-16 1986-02-18 Christopher T Graham Urinary catheter with collapsible urethral tube
US4579554A (en) * 1984-01-30 1986-04-01 Glassman Jacob A Indwelling urinary catheter
US4589868A (en) * 1984-03-12 1986-05-20 Dretler Stephen P Expandable dilator-catheter
US4696304A (en) * 1984-09-10 1987-09-29 Thomas J. Fogarty Thermodilution flow-directed catheter assembly and method
US4631054A (en) * 1984-11-16 1986-12-23 Kim Il G Apparatus and process for naso-intestinal intubation
US4770652A (en) * 1985-02-12 1988-09-13 Mahurkar Sakharam D Method and apparatus for using dual-lumen catheters for extracorporeal treatment
US4804358A (en) * 1985-02-20 1989-02-14 Medicorp Research Laboratories Corporation Coronary perfusion pump
US4681564A (en) * 1985-10-21 1987-07-21 Landreneau Michael D Catheter assembly having balloon extended flow path
US4781699A (en) * 1986-02-08 1988-11-01 Nissho Corportion Mucus-removing device
US4808155A (en) * 1986-02-27 1989-02-28 Mahurkar Sakharam D Simple double lumen catheter
US4795439A (en) * 1986-06-06 1989-01-03 Edward Weck Incorporated Spiral multi-lumen catheter
US5024668A (en) * 1987-01-20 1991-06-18 Rocky Mountain Research, Inc. Retrograde perfusion system, components and method
US5082006A (en) * 1987-09-15 1992-01-21 Linda Jonasson Device for preventing involuntary micturition
US6206849B1 (en) 1987-12-22 2001-03-27 Vas-Cath Incorporated Multiple lumen catheter
US7229429B2 (en) 1987-12-22 2007-06-12 Vas-Cath Inc. Multiple lumen catheter
US5797869A (en) * 1987-12-22 1998-08-25 Vas-Cath Incorporated Multiple lumen catheter
US20010044594A1 (en) * 1987-12-22 2001-11-22 Vas-Cath Incorporated Multiple lumen catheter
US4842583A (en) * 1987-12-23 1989-06-27 Heshmat Majlessi Colonic irrigation tube
US4919651A (en) * 1988-04-15 1990-04-24 Santa Barbara Medical Foundation Clinic Catheter having a double lumen and a balloon and method of using the same for controlled operative cholangiography
US5306226A (en) * 1989-02-09 1994-04-26 Salama Fouad A Urinary control with inflatable seal and method of using same
US5693001A (en) * 1989-02-09 1997-12-02 Salama; Fouad A. Urinary control with inflatable seal and method of using same
US5007897A (en) * 1989-05-30 1991-04-16 Kalb Irvin M Drug delivery catheter
US5261896A (en) * 1990-01-10 1993-11-16 Rochester Medical Corporation Sustained release bactericidal cannula
US5670111A (en) * 1990-01-10 1997-09-23 Rochester Medical Corporation Method of shaping structures with an overcoat layer including female urinary catheter
US5599321A (en) * 1990-01-10 1997-02-04 Rochester Medical Corporation Sustained release bactericidal cannula
US5221255A (en) * 1990-01-10 1993-06-22 Mahurkar Sakharam D Reinforced multiple lumen catheter
US5593718A (en) * 1990-01-10 1997-01-14 Rochester Medical Corporation Method of making catheter
US5137671A (en) * 1990-01-10 1992-08-11 Rochester Medical Corporation Methods of making balloon catheters
US6626888B1 (en) 1990-01-10 2003-09-30 Rochester Medical Corporation Method of shaping structures with an overcoat layer including female urinary catheter
US5971954A (en) * 1990-01-10 1999-10-26 Rochester Medical Corporation Method of making catheter
US5098379A (en) * 1990-01-10 1992-03-24 Rochester Medical Corporation Catheter having lubricated outer sleeve and methods for making and using same
US5370899A (en) * 1990-01-10 1994-12-06 Conway; Anthony J. Catheter having lubricated outer sleeve and method for making same
US5374245A (en) * 1990-01-10 1994-12-20 Mahurkar; Sakharam D. Reinforced multiple-lumen catheter and apparatus and method for making the same
US5482740A (en) * 1990-01-10 1996-01-09 Rochester Medical Corporation Sustained release bactericidal cannula
US5501669A (en) * 1990-01-10 1996-03-26 Rochester Medical Corporation Urinary catheter with reservoir shroud
US6383434B2 (en) 1990-01-10 2002-05-07 Rochester Medical Corporation Method of shaping structures with an overcoat layer including female urinary catheter
US5197952A (en) * 1990-06-13 1993-03-30 Dlp, Inc. Auto-inflating catheter cuff
US5096454A (en) * 1990-08-16 1992-03-17 Samples Charles R Method of catheterization and bladder drainage
US5313939A (en) * 1991-10-11 1994-05-24 University Of Pittsburgh Of The Commonwealth System Of Higher Education Endotracheal™ tube for topical substance delivery and associated method of use
US5425708A (en) * 1991-12-13 1995-06-20 Nissho Corporation Catheter with an aorta-occluding balloon
US5221256A (en) * 1992-02-10 1993-06-22 Mahurkar Sakharam D Multiple-lumen catheter
US5306250A (en) * 1992-04-02 1994-04-26 Indiana University Foundation Method and apparatus for intravascular drug delivery
US5248304A (en) * 1992-05-29 1993-09-28 Michael Vigdorchik Single use intrauterine injector
US5443447A (en) * 1992-09-24 1995-08-22 Amin I. Kassis Intracavitary delivery or withdrawal device
US5713860A (en) * 1992-11-02 1998-02-03 Localmed, Inc. Intravascular catheter with infusion array
US5571086A (en) * 1992-11-02 1996-11-05 Localmed, Inc. Method and apparatus for sequentially performing multiple intraluminal procedures
US5609574A (en) * 1992-11-02 1997-03-11 Localmed, Inc. Intravascular catheter with infusion array
US5558620A (en) * 1993-02-05 1996-09-24 Richard Wolf Gmbh Medical instrument employing curved spreading members to manipulate organs within the body
US5314409A (en) * 1993-03-11 1994-05-24 Uva Patents Foundation Catheter for esophageal perfusion
DE4310378A1 (en) * 1993-03-30 1994-10-06 Aigner Karl Balloon catheter and apparatus for isolated Persfusion by means of the balloon catheter
US5746717A (en) * 1993-03-30 1998-05-05 Aigner; Karl R. Balloon catheter and device for perfusion with the balloon catheter
US5308338A (en) * 1993-04-22 1994-05-03 Helfrich G Baird Catheter or the like with medication injector to prevent infection
US5489278A (en) * 1993-08-02 1996-02-06 Quinton Instrument Company Catheter with elongated side openings
US5451206A (en) * 1993-08-02 1995-09-19 Quinton Instrument Company Triple lumen catheter
US5348536A (en) * 1993-08-02 1994-09-20 Quinton Instrument Company Coextruded catheter and method of forming
US5403291A (en) * 1993-08-02 1995-04-04 Quinton Instrument Company Catheter with elongated side holes
US5383866A (en) * 1993-09-15 1995-01-24 Chang; Hau H. Occlusion ureteral catheter for retrograde pyelography
US5486159A (en) * 1993-10-01 1996-01-23 Mahurkar; Sakharam D. Multiple-lumen catheter
US5417657A (en) * 1993-10-06 1995-05-23 Hauer; Carolyn No-sepsis urinary drainage catheter
US5389074A (en) * 1993-10-27 1995-02-14 The Regents Of The University Of California Body insertion tube with anesthetic jacket
US5599306A (en) * 1994-04-01 1997-02-04 Localmed, Inc. Method and apparatus for providing external perfusion lumens on balloon catheters
US5562620A (en) * 1994-04-01 1996-10-08 Localmed, Inc. Perfusion shunt device having non-distensible pouch for receiving angioplasty balloon
US5536250A (en) * 1994-04-01 1996-07-16 Localmed, Inc. Perfusion shunt device and method
US5713861A (en) * 1994-10-17 1998-02-03 Vanarthos; William Trauma urethral catheter and method of using same
US5522801A (en) * 1995-01-18 1996-06-04 Wang; Abe Integrate-forming silicone balloon catheter
US5591128A (en) * 1995-03-03 1997-01-07 Sithole; Deborah I. Gastrostomy tube
US5556390A (en) * 1995-03-07 1996-09-17 Quinton Instrument Company Catheter with oval or elliptical lumens
US6197351B1 (en) 1995-06-07 2001-03-06 Robert S. Neuwirth Intrauterine chemical necrosing method and composition
US6187346B1 (en) 1995-06-07 2001-02-13 Ablation Products, Inc. Intrauterine chemical cauterizing method and composition
US5830196A (en) * 1995-09-21 1998-11-03 Tyco Group S.A.R.L. Tapered and reinforced catheter
US7678154B2 (en) 1995-11-07 2010-03-16 Boston Scientific Scimed, Inc. Ureteral stent for improved patient comfort
US6849069B1 (en) 1995-11-07 2005-02-01 Boston Scientitfic Corporation Medical device with tail(s) for assisting flow of urine
US6991614B2 (en) 1995-11-07 2006-01-31 Boston Scientific Scimed, Inc. Ureteral stent for improved patient comfort
US6945950B2 (en) 1995-11-07 2005-09-20 Boston Scientific Scimed, Inc. Ureteral stent with small bladder tail(s)
US8845752B2 (en) 1995-11-07 2014-09-30 Boston Scientific Scimed, Inc. Ureteral stent for improved patient comfort
US6656146B1 (en) 1995-11-07 2003-12-02 Scimed Life Systems, Inc. Medical device with tail(s)
US5718678A (en) * 1996-06-26 1998-02-17 Medical Components, Inc. Multi-lumen coaxial catheter and method for making same
US6394996B1 (en) 1997-01-07 2002-05-28 C. R. Bard, Inc. System for aspirating and irrigating tract wounds
US6878142B2 (en) 1997-01-07 2005-04-12 C. R. Bard, Inc. System for aspirating and irrigating tract wounds
US6165492A (en) * 1997-05-12 2000-12-26 Neuwirth; Robert S. Intrauterine chemical necrosing method, composition, and apparatus
US5891457A (en) * 1997-05-12 1999-04-06 Neuwirth; Robert S. Intrauterine chemical necrosing method, composition, and apparatus
US20010003795A1 (en) * 1997-07-22 2001-06-14 Mitta Suresh Catheter system and method for posterior epicardial revascularization and intracardiac surgery on a beating heart
WO1999007420A1 (en) 1997-08-11 1999-02-18 Novadent Ltd. Irrigation catheter
US6248121B1 (en) 1998-02-18 2001-06-19 Cardio Medical Solutions, Inc. Blood vessel occlusion device
US6595966B2 (en) 1998-02-24 2003-07-22 Scimed Life Systems, Inc. High flow rate dialysis catheters and related methods
US6280423B1 (en) 1998-02-24 2001-08-28 Scimed Life Systems, Inc. High flow rate dialysis catheters and related methods
US7410602B2 (en) 1998-02-24 2008-08-12 Namic/Va, Inc. High flow rate dialysis catheters and related methods
US20050203564A1 (en) * 1998-07-23 2005-09-15 Nobles Anthony A. Blood vessel occlusion device
US6332892B1 (en) 1999-03-02 2001-12-25 Scimed Life Systems, Inc. Medical device with one or more helical coils
US6719804B2 (en) 2001-04-02 2004-04-13 Scimed Life Systems, Inc. Medical stent and related methods
US7291180B2 (en) 2001-04-02 2007-11-06 Boston Scientific Scimed, Inc. Medical stent and related methods
US7951206B2 (en) * 2001-04-02 2011-05-31 Boston Scientific Scimed, Inc. Medical stent
US6676623B2 (en) 2001-05-04 2004-01-13 Scimed Life Systems, Inc. Drainage devices and methods
US6620202B2 (en) 2001-10-16 2003-09-16 Scimed Life Systems, Inc. Medical stent with variable coil and related methods
US7037345B2 (en) 2001-10-16 2006-05-02 Boston Scientific Scimed, Inc. Medical stent with variable coil and related methods
US20030163082A1 (en) * 2002-02-26 2003-08-28 Mertens Steven P. Lumen weld
US7332689B2 (en) 2002-02-26 2008-02-19 Boston Scientific Scimed, Inc. Tacking method and apparatus
US20040004311A1 (en) * 2002-02-26 2004-01-08 Scimed Life Systems, Inc. Tacking method and apparatus
US20050288630A1 (en) * 2004-01-22 2005-12-29 Conway Anthony J Cuff resistant foley catheter
US20060079838A1 (en) * 2004-10-08 2006-04-13 Walker Steven C Movable Balloon anchor for medical devices
US20060079845A1 (en) * 2004-10-08 2006-04-13 Eben Howard And Pamela A. Howard Movable inflatable anchor for medical devices
US20060129136A1 (en) * 2004-12-09 2006-06-15 Meacham George B K Catheter
US20060229576A1 (en) * 2005-04-12 2006-10-12 Conway Anthony J Male external catheter with absorbent
US9248058B2 (en) 2005-04-12 2016-02-02 Rochester Medical Corporation, a subsidiary of C.R. Bard, Inc. Male external catheter with absorbent and adhesive
US8864730B2 (en) 2005-04-12 2014-10-21 Rochester Medical Corporation Silicone rubber male external catheter with absorbent and adhesive
US9642616B2 (en) 2005-06-20 2017-05-09 Nobles Medical Technologies, Inc. Method and apparatus for applying a knot to a suture
US20140094760A1 (en) * 2006-10-17 2014-04-03 C. R. Bard, Inc. Waste Management System
US9456920B2 (en) * 2006-10-17 2016-10-04 C. R. Bard, Inc. Waste management system
GB2448892B (en) * 2007-05-01 2009-04-29 Jotillou Entpr Ltd Catheter
US20100198139A1 (en) * 2007-05-01 2010-08-05 Scott Glickman Catheter
GB2448892A (en) * 2007-05-01 2008-11-05 Jotillou Entpr Ltd Urinary catheter having three lumens and a distal valve
US8038644B2 (en) 2007-05-01 2011-10-18 Jotillou Enterprises Ltd. Catheter
US20100191183A1 (en) * 2007-07-13 2010-07-29 Coloplast A/S Tip for an Insertion Device
WO2009010070A1 (en) * 2007-07-13 2009-01-22 Coloplast A/S A tip for an insertion device
US8920403B2 (en) 2008-03-18 2014-12-30 Anthony Doerr Catheter with biologic adhesive injection ports and method of injecting biologic adhesive therewith
US20090240234A1 (en) * 2008-03-18 2009-09-24 Anthony Doerr Catheter with biologic adhesive injection ports and method of injecting biologic adhesive therewith
US20100106051A1 (en) * 2008-10-24 2010-04-29 Innerspace, Inc. Single lumen catheter with separate tubes therein
US20170020645A1 (en) * 2009-12-18 2017-01-26 Coloplast A/S Method of treating urinary incontinence
US9707375B2 (en) 2011-03-14 2017-07-18 Rochester Medical Corporation, a subsidiary of C. R. Bard, Inc. Catheter grip and method
US9649106B2 (en) 2011-04-15 2017-05-16 Heartstitch, Inc. Suturing devices and methods for suturing an anatomic valve
US9706988B2 (en) 2012-05-11 2017-07-18 Heartstitch, Inc. Suturing devices and methods for suturing an anatomic structure
US9872969B2 (en) 2012-11-20 2018-01-23 Rochester Medical Corporation, a subsidiary of C.R. Bard, Inc. Catheter in bag without additional packaging
US9713699B2 (en) 2014-12-22 2017-07-25 Neogenix, Llc Transport and storage apparatus for wound care exudate

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