US4160454A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Implantable catheter system
Assignee: University of Utah Research Foundation Inc
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Filing: 1977-02-14
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Granted: 1979-07-10
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Expires: 1997-02-14
Abstract
Abstract An implantable catheter system includes an elongated hollow casing which is reinforced to maintain a predetermined attitude and made of a material penetrable by a needle, and a tube extending laterally of the casing so that when the casing is implanted subcutaneously in a person, the tube may extend into the person's peritoneal cavity. The tube is coupled into the casing to enable communication therebetween. The free end of the tube includes a plurality of openings to enable the flow of fluid therethrough into or out of the tube. When the catheter system is implanted in the body of a person, fluids may be introduced into and withdrawn from the peritoneal cavity by inserting a hypodermic needle through the epidermis of a person into the casing which is implanted subcutaneously in the person. Fluid is then injected into or withdrawn from the casing to thereby respectively force fluid through the tube into the peritoneal cavity or withdraw fluid from the cavity via the tube.
Inventors
- 👤 Amnon Foux
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:01
CPC Classifications
A; A61; A61M; A61M39/00; A61M39/02; A61M39/0208; A61M27/00; A61M2039/0211
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
207 words
An implantable catheter comprising an elongate hollow member adapted for subcutaneous placement in a person, said member being constructed of a material which is penetrable by a needle, the hollow of the member being divided into two portions neither of which is in communication with the other, said hollow member including wire coil reinforcing structure extending about the hollow of said hollow member to prevent collapse of the member when fluid is withdrawn therefrom, a first tubular member extending from near one end of said hollow member to enable communication between the tubular member and one of said hollow portions, and a second tubular member extending from near the other end of said hollow member to enable communication between the second tubular member and the other of said hollow portions, said second tubular member being spaced apart from and having a different length than said first tubular member, each of said tubular members having at least one opening therein to enable the flow of fluid between the interior and the exterior of said tubular members, the tubular members further including protuberances on the exterior surface thereof to project above the openings, and the exterior surface of said hollow member being adapted to accommodate human tissue growth thereon.
Claim 2
Dependent Claim
207 words
An implantable catheter comprising an elongate hollow member adapted for subcutaneous placement in a person, said member being constructed of a material which is penetrable by a needle, the hollow of the member being divided into two portions neither of which is in communication with the other, said hollow member including wire coil reinforcing structure extending about the hollow of said hollow member to prevent collapse of the member when fluid is withdrawn therefrom, a first tubular member extending from near one end of said hollow member to enable communication between the tubular member and one of said hollow portions, and a second tubular member extending from near the other end of said hollow member to enable communication between the second tubular member and the other of said hollow portions, said second tubular member being spaced apart from and having a different length than said first tubular member, each of said tubular members having at least one opening therein to enable the flow of fluid between the interior and the exterior of said tubular members, the tubular members further including protuberances on the exterior surface thereof to project above the openings, and the exterior surface of said hollow member being adapted to accommodate human tissue growth thereon.
Claim 3
Dependent Claim
15 words
A catheter as in claim 1 wherein said wire coil is comprised of stainless steel.
Claim 4
Dependent Claim
20 words
A catheter as in claim 1 wherein said hollow member and said tubular members are constructed of a flexible material.
Claim 5
Dependent Claim
18 words
A catheter as in claim 1 wherein said hollow member includes an exterior layer of polyester resin velour.
Claim 6
Dependent Claim
17 words
A catheter as in claim 1 wherein said hollow member includes an exterior layer of porous polytetrafluorethylene.
Claim 7
Dependent Claim
26 words
A catheter as in claim 1 wherein the exterior surface of said hollow member is treated to enhance and accelerate the growth of human tissue thereon.
Claim 8
Dependent Claim
22 words
A catheter as in claim 1 wherein said protuberances comprise generally parallel ridges and wherein said opening is disposed between the ridges.
Claim 9
Dependent Claim
20 words
A catheter as in claim 1 further including an X-ray detectable material disposed in the end of said tubular members.
Claim 10
Dependent Claim
16 words
A catheter as in claim 8 wherein said X-ray detectable material is comprised of stainless steel.
Claim 11
Dependent Claim
41 words
A catheter as in claim 1 wherein said catheter includes a partition in said hollow member to divide the hollow into said two portions and to prevent communication therebetween, each portion being located in a different end of said hollow member.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-07-09 | 1983-01-08 | 1983-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-07-09 | 1987-01-08 | 1987-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-07-09 | 1991-01-08 | 1991-07-10 | $7700.00 | Window Closed / Lapsed |