|Publication number||US3618613 A|
|Publication date||9 Nov 1971|
|Filing date||19 May 1969|
|Priority date||19 May 1969|
|Publication number||US 3618613 A, US 3618613A, US-A-3618613, US3618613 A, US3618613A|
|Inventors||Rudolf R Schulte|
|Original Assignee||Heyer Schulte Corp|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (7), Referenced by (63), Classifications (14), Legal Events (4)|
|External Links: USPTO, USPTO Assignment, Espacenet|
United States Patent 72] Inventor [211 App]. No.
 Filed 45 Patented [73 Assignee  ANTITHROMBOTIC CATHETER REINFO MEANS Rudolf R. Schulte Santa Barbara, Calif. 825,656
May 19, 1969 Nov. 9, 1971 Heyer-Schulte Corporation Santa Barbara, Calif.
1 Claim, 4 Drawing Figs.
 U.S.C1  lnt.Cl
 Field of Search References Cited UNITED STATES PATENTS 2,330,399 9/1943 Winder INTRAVASCULAR RCED WITH NONKINKING 3,416,531 12/1968 Edwards 128/348 3,434,869 3/1969 Davidson 128/349 3,453,194 7/1969 Bennett et a1 3/1 3,485,234 12/1969 Stevens 128/348 X FOREIGN PATENTS 1,048,288 8/1953 France 128/351 4,816 1889 Great Britain 128/349 Primary Examiner-Dalton L. Truluck Attorney-Angus & Mon
ABSTRACT: This invention relates to tubular catheters which are inserted through veins to enter the peritoneal cavity for medical purposes. Such tubing catheters have other medical applications such as for drainage or for introduction of medical materials, but since the tubing is of such a small diameter.
PATENTEB NOV 9 |97| IN VI'JN'H m. Rl/DOLF R. SCHUL TE BY L a M ATTORNEYS.
ANTITI-IROMBOTIC INTRAVASCULAR CATHETER REINFORCED WITH NONKINKING MEANS DESCRIPTION OF THE INVENTION This invention relates to surgical catheters.
An object of this invention is to provide a catheter for body implant, of small diameter, which will stand the stress of insertion through the veins or organs of a body.
Another object of the invention is to provide the tube-type catheter which can resist the stresses of insertion with kinking.
A further object of the invention is to provide tubing catheter which will not fail at the point where the tubing is applied to connecting devices.
Still another object of the invention is to provide tubing which will be self-guided into a vein and prevent kinking failure at its point of entrance. 1
Still another object of the invention is to provide a catheter which will curve over the muscles encountered during its course through the body without kinking.
A further object of the invention is to provide reinforced tubing that will be capable of penetrating muscles before entering body cavities without kinking or other mechanical failure. 7
Other objects and advantages of the instant invention will be shown by studying the figures and the description of invention, which follows:
FIG. 1 is a segment of an embodiment of the invention partially in cross section;
FIG. 2 is a side elevation of the embodiment of FIG. 1 before final coating; I
FIG. 3 is a section on line 33 of FIG. 2; and
FIG. 4 shows the embodiment of the invention of FIG. I and FIG. 2 in process of final coating.
In FIG. 1 there is shown a preferred embodiment of the invention.
The tubing is encircled by a continuous wire coil spring 11 which encircles the tubing in very close contact, preferably an interference fit, between the inside diameter of the the coil spring 11 and the outside diameter of the tubing 10. The tubing 10 for this class of article is of very small internal and external diameter, in the range of one-sixteenth inch. In order to provide the interference fit, the tubing is made with an entrance probe, as seen in FIG. 2. The entrance probe 12 may be conveniently formed on the tubing by thermoplastic means or may be a separate piece assembled to the tubing 10.
In order to make a coil spring of diameter that will be in interference fit with the tubing 10, the spring may be conveniently wound on a mandrel of larger diameter to form the coil and then elongated to provide the spacing of the coils and further to reduce the internal diameter of the coil spring 11.
A convenient length of tubing 10 with entrance probe 12 at one end is gripped by the entrance probe 12 and pulled through the coil 1 l with sufiicient force to overcome the interference fit between coil 11 and the outside diameter of tubing 10.
The tubing 10 is then suspended in air hanging from a fixture which engages entrance probe 12. A container 13 having a spout 14, the spout having an entrance hole 15, is passed over the tubing to the uppermost end so that entrance hole I5 is in a downward direction and the entrance hole 15 is so designed that it is a close fit to the outside diameter of the coil spring 11. The container 13 is then filled with a silicone material 16 which may conveniently be a silicone rubber of air-curing formulation. Silicone rubber is formulated to a viscosity which will cause it to cling to the exterior of the tubing 10 and fill the recesses between the coils of the spring 11 and fonn a coating 17 over said spring 11 and tubing 10 of the desired thickness. As the container 13 is allowed to move slowly downward over the tubing 10 and coil spring 11 assembly, the coated assembly of tubing 10 and coil spring I1 is then allowed to hang in air until the silicone material hardens to its final consistency,
One novel production method in assuring that the small diameter tubing may be pulled through in interference fit through the smaller internal diameter coil spring II is accomplished by fusing a cord or wire to the end of the tubing 10, so that the outside diameter does not have to be increased by adding a gripping means for pulling through the coil spring 11.
The distal end of the tubing, which is formed by the entrance probe 12 is coated with an antithrombotic coating, which may be of the nature of Hepacone, to prevent the formation of blood clots as the tubing is pulled through the body.
Thus it can be seen that a reinforced, small diameter tubing, which will not be subject to kinking and will not be reactive to the body fluids and is further provided with an entrance probe to permit passage through the body and a coating to prevent formation of thrombosis is provided by the instant invention, in accordance with the following claims.
1. A surgical catheter comprising a flexible tubing made entirely of silicone rubber; an entrance probe integral with the flexible tubing and also made of silicone rubber, said entrance probe having a stepped-down outer diameter less than the outer diameter of the tubing and extending as a cylinder for a substantial distance; an antithrombotic coating of silicone rubber infused with heparin on said entrance probe; a flexible coil spring encircling and in interference fit with said tubing; and a surface coating of silicone rubber, once liquid and later cured to a solid, said coating fully covering the exposed surface of the spring and tubing and substantially filling in the interstices between convolutions of the spring.
UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Dated November 9, 1971 It is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below:
In the Patent Col. 1, lines 9-12 line 13 line 14 lines 17-18 lines 27-28 line 30 lines 31-32 line 33 line 35 line 36 line 38 lines 42-43 line 43 "stand the stress. .with kinking" should be --withstand insertion and usage stresses without kinking-- "tubing" should be -a tubular-- "will not fail" should be --resist failure-- "self guided into a vein and prevent kinking failure" should be --self guiding as it enters into a vein and will resist kinking-- "shown by...which follows:" should be --evident from the following detailed description in the accompany drawings in which:--
II II a should be -the presently-- "The" should be --A-- Cancel "internal and external" after "inch' and before the period, insert -inner diameter-- J Page -2- UNITED STATES PATENT OFFICE Patent No.
November 9, 1971 Dated Inventor(s) RUDOLF R. SCHULTE It is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below:
In the Patent (continued) 7 Col. 1, line Col.
lines 18-20 line line
ll l3 "made" should be --provide- "seen" should be -shown-- "conveniently" should be --integrally-- Cancel "by thermoplastic means" "be"should be --constitute-- Cancel "conveniently" after "pulled" insert --by it-- "is" should be --makes-- "to" should be --with-- "which may conveniently be" should be --such as-- "Silicone" should be --The silicone-- "As the container. tubing 10 and coil spring ll" should be --The container is moved slowly dovmward over the assembled tubing and coil spring, which causes this assembly to be coatec with a layer of silicone. After this coating occurs, the coated article-- "assuring that" should be --enabling-- "may" should be --to-- J Page -3 3,618,613 November 9, 1971 Patent No. Dated RUDOLF R. SCHULTE Inventor(s) It is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below:
in the Patent (continued) 1 Col. 2, lines 24-25 in interference fit through" to --and fit tightly in-- lines 25-26 "accomplished fusing. .tubing 10," to --by attaching a cord or wire to the probe,
line 27 after "diameter" insert --of the tubing-- line 28 after 'll." insert --The cord or wire is passed freely through the spring, and is then used to pull the fusing through the spring.--
line 31 "which may be of the nature of Hepacone' should be --such as a coating including heparin-- line 37 change the comma to a period and cancel "in accordance with the following claims."
line 38 Add the following paragraph: --This invention is not to be limited by the embodiment shown in the drawings and described in the description, which is given by way of example and not of limitation, but only in accordance with the scope of the appended claims.--
Signed and sealed this 9th day of January 1973.
(SEAL) rttest: .1
EDWARD M. FLETCHER ,JR ROBERT GOTTSCHALK lttesting Officer Commissioner of Patents
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US2330399 *||11 Sep 1937||28 Sep 1943||American Anode Inc||Distensible bag catheter|
|US3416531 *||2 Jan 1964||17 Dec 1968||Edwards Miles Lowell||Catheter|
|US3434869 *||2 Nov 1964||25 Mar 1969||Dow Corning||Foley catheter with silicone rubber coating|
|US3453194 *||3 Aug 1966||1 Jul 1969||Dow Corning||Anticoagulant surfaces produced by radiation grafting heparin to a silicone substrate|
|US3485234 *||13 Apr 1966||23 Dec 1969||Cordis Corp||Tubular products and method of making same|
|FR1048288A *||Title not available|
|GB188904816A *||Title not available|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US3757768 *||7 Apr 1972||11 Sep 1973||Medical Evaluation Devices And||Manipulable spring guide-catheter and tube for intravenous feeding|
|US3937224 *||11 Apr 1974||10 Feb 1976||Uecker Ronald L||Colostomy catheter|
|US4044765 *||17 Dec 1975||30 Aug 1977||Medical Evaluation Devices And Instruments Corporation||Flexible tube for intra-venous feeding|
|US4106506 *||26 Jan 1976||15 Aug 1978||Koehn Wilbur R||Catheter|
|US4360031 *||11 Sep 1980||23 Nov 1982||Medtronic, Inc.||Drug dispensing irrigatable electrode|
|US4547192 *||11 Apr 1983||15 Oct 1985||Superior Plastic Products Corp.||Gastroenteric feeding tube|
|US4634432 *||13 May 1985||6 Jan 1987||Nuri Kocak||Introducer sheath assembly|
|US4669456 *||4 May 1983||2 Jun 1987||Mentor Corporation||Positionable penile prosthesis|
|US4832681 *||2 Dec 1987||23 May 1989||Lenck Lucien C||Method and apparatus for artificial fertilization|
|US4931039 *||21 Oct 1988||5 Jun 1990||Baxter International Inc.||Ventricular catheter introducer|
|US4986279 *||1 Mar 1989||22 Jan 1991||National-Standard Company||Localization needle assembly with reinforced needle assembly|
|US4990143 *||9 Apr 1990||5 Feb 1991||Sheridan Catheter Corporation||Reinforced medico-surgical tubes|
|US5045071 *||19 Jan 1989||3 Sep 1991||Mbo Laboratories, Inc.||Double wall catheter with internal printing and embedded marker|
|US5059375 *||13 Nov 1989||22 Oct 1991||Minnesota Mining & Manufacturing Company||Apparatus and method for producing kink resistant tubing|
|US5125909 *||11 Apr 1990||30 Jun 1992||Richard Wolf Gmbh||Flexible tubular channel with external supporting ridges|
|US5147315 *||6 Apr 1990||15 Sep 1992||C. R. Bard, Inc.||Access catheter and system for use in the female reproductive system|
|US5154705 *||24 Jul 1989||13 Oct 1992||Lake Region Manufacturing Co., Inc.||Hollow lumen cable apparatus|
|US5238004 *||30 Sep 1992||24 Aug 1993||Boston Scientific Corporation||High elongation linear elastic guidewire|
|US5244619 *||3 May 1991||14 Sep 1993||Burnham Warren R||Method of making catheter with irregular inner and/or outer surfaces to reduce travelling friction|
|US5246430 *||27 Mar 1992||21 Sep 1993||Taut, Inc.||Reinforced cholangiogram catheter|
|US5279596 *||25 Jun 1992||18 Jan 1994||Cordis Corporation||Intravascular catheter with kink resistant tip|
|US5335410 *||15 Mar 1993||9 Aug 1994||Burnham Warren R||Method of making ultra small diameter catheters and of reinforced tubular product|
|US5405338 *||19 Aug 1993||11 Apr 1995||Cordis Corporation||Helically wound catheters|
|US5409469 *||4 Nov 1993||25 Apr 1995||Medtronic, Inc.||Introducer system having kink resistant splittable sheath|
|US5431637 *||31 Jul 1992||11 Jul 1995||Sherwood Medical Company||Endotracheal suction catheter|
|US5466230 *||9 Jun 1994||14 Nov 1995||Cordis Corporation||Catheter sheath introducer with strain relief|
|US5472435 *||21 May 1993||5 Dec 1995||Navarre Biomedical, Ltd.||Drainage catheter|
|US5496292 *||4 May 1992||5 Mar 1996||Burnham; Warren||Catheter with irregular inner and/or outer surfaces to reduce travelling friction|
|US5571073 *||26 Oct 1995||5 Nov 1996||Cordis Corporation||Catheter flexible tip assembly|
|US5669383 *||28 Jul 1994||23 Sep 1997||Sims Deltec, Inc.||Polyimide sheath for a catheter detector and method|
|US5776115 *||17 Jan 1996||7 Jul 1998||Becton Dickinson And Company||Catheter having a gear-shaped lumen to avert the elimination of fluid flow therein|
|US5941858 *||17 Sep 1997||24 Aug 1999||Sims Deltec, Inc.||Medical device for insertion into the body|
|US6068622 *||10 Feb 1998||30 May 2000||Medtronic Inc.||Single piece hub/strain relief that can be injection molded over a shaft|
|US6210395||20 Oct 1997||3 Apr 2001||Lake Region Mfg., Inc.||Hollow lumen cable apparatus|
|US6258195||19 Mar 1999||10 Jul 2001||Scimed Life Systems, Inc.||Multi-cord fusing manufacturing process for catheter members|
|US6342591||31 Jul 2000||29 Jan 2002||Biosurface Engineering Technologies, Inc.||Amphipathic coating for modulating cellular adhesion composition and methods|
|US6596699||22 Jan 2002||22 Jul 2003||Biosurface Engineering Technologies, Inc.||Nucleic acid coating compositions and methods|
|US6630580||14 Jan 2002||7 Oct 2003||Innerdyne, Inc.||Silyl and Heparin compositions|
|US6685696||9 Feb 2001||3 Feb 2004||Lake Region Manufacturing, Inc.||Hollow lumen cable apparatus|
|US7198066||22 Oct 2002||3 Apr 2007||Novarix Ltd., Oxford Centre For Innovation||Device for supporting and stabilising a tubing for fluid transport and such a tubing|
|US8523899 *||22 Aug 2012||3 Sep 2013||Olympus Medical Systems Corp.||Treatment device for endoscope|
|US8529719||18 May 2007||10 Sep 2013||Applied Medical Resources Corporation||Method of making medical tubing having variable characteristics using thermal winding|
|US8691035||13 Aug 2013||8 Apr 2014||Applied Medical Resources Corporation||Method of making medical tubing having variable characteristics using thermal winding|
|US8715441||8 Sep 2010||6 May 2014||Applied Medical Resources Corporation||Medical tubing having variable characteristics and method of making same|
|US8721826||19 Nov 2010||13 May 2014||Applied Medical Resources Corporation||Steerable kink-resistant sheath|
|US9108017||22 Mar 2012||18 Aug 2015||Applied Medical Resources Corporation||Method of making tubing have drainage holes|
|US20030153937 *||6 Feb 2003||14 Aug 2003||Al-Qahtani Ali Saeed Mohammed||Apparatus for use in the treatment of choanal atresia|
|US20050011568 *||22 Oct 2002||20 Jan 2005||Lise Kagenow||Device for supporting and stabilising a tubing for fluid transport and such a tubing|
|US20050165366 *||28 Jan 2004||28 Jul 2005||Brustad John R.||Medical tubing having variable characteristics and method of making same|
|US20050273076 *||7 Jun 2005||8 Dec 2005||C.R. Bard, Inc.||Subcutaneous infusion devices|
|US20070215268 *||18 May 2007||20 Sep 2007||Applied Medical Resources Corporation||Method of making medical tubing having variable characteristics using thermal winding|
|US20090149834 *||7 Dec 2007||11 Jun 2009||Gerald Moss||Reinforced enteral feeding catheter|
|US20110196315 *||11 Aug 2011||Medinol Ltd.||Catheter tip assembled with a spring|
|US20120316543 *||22 Aug 2012||13 Dec 2012||Olympus Medical Systems Corp.||Treatment device for endoscope|
|US20130116651 *||9 May 2013||Terumo Kabushiki Kaisha||Catheter and method|
|EP0680771A1 *||28 Apr 1995||8 Nov 1995||Medtronic, Inc.||Insulated extendable/retractable screw-in pacing lead|
|EP2067465A2||2 Dec 2008||10 Jun 2009||Gerald Moss||Reinforced enteral feeding catheter|
|EP2851061A1||18 Sep 2014||25 Mar 2015||Gerald Moss||Catheter and method of making the same|
|EP2926856A1||27 Mar 2015||7 Oct 2015||Gerald Moss||Multi-lumen catheter|
|WO1992019308A1 *||4 May 1992||12 Nov 1992||Warren R Burnham||Catheter with irregular inner and/or outer surfaces|
|WO1994021420A1 *||15 Mar 1994||29 Sep 1994||Warren R Burnham||Method and apparatus for small catheters and reinforced tubular product|
|WO1994027697A1 *||20 May 1994||8 Dec 1994||Navarre Biomedical Ltd||Drainage catheter|
|WO2003035160A1 *||22 Oct 2002||1 May 2003||Lise Kagenow||A device for supporting and stabilising a tubing for fluid transport and such a tubing|
|International Classification||B29C41/36, B05D1/18, A61M25/00|
|Cooperative Classification||A61M25/005, B29L2031/7542, B29C41/36, B29L2023/00, A61M25/0045, B05D1/18, A61M25/0012|
|European Classification||B29C41/36, B05D1/18, A61M25/00S2|
|30 Jan 1990||AS||Assignment|
Owner name: BAXTER INTERNATIONAL INC.
Free format text: CHANGE OF NAME;ASSIGNOR:BAXTER TRAVENOL LABORATORIES, INC., A CORP. OF DE;REEL/FRAME:005050/0870
Effective date: 19880518
|2 Mar 1987||AS||Assignment|
Owner name: BAXTER TRAVENOL LABORATORIES, INC. A CORP. OF DE
Free format text: MERGER;ASSIGNOR:AMERICAN HOSPITAL SUPPLY CORPORATION INTO;REEL/FRAME:004760/0345
Effective date: 19870126
|16 Apr 1984||AS||Assignment|
Owner name: AMERICAN HEYER-SCHULTE CORPORATION
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:HEYER-SCHULTE CORPORATION;REEL/FRAME:004245/0660
Effective date: 19800623
|22 Feb 1983||AS||Assignment|
Owner name: AMERICAN HOSPITAL SUPPLY CORPORATION; ONE AMERICAN
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:AMERICAN HEYER- SCHULTE CORPORATION;REEL/FRAME:004099/0695
Effective date: 19830121