US3633585A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catheter
Assignee: Bayer Corp
•
Filing: 1969-04-17
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Granted: 1972-01-11
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Expires: 1989-04-17
Abstract
Abstract A catheter for use in an animal or human body. A flexible tube resistant to the action of body fluids and compatible with the body environment, e.g., of silicone rubber, has an exterior portion, an interior portion, and a percutaneous or skin-passing portion. The interior portion has apertures for withdrawal of fluid from a body cavity or vessel; the exterior portion has a removable closure. The skin-passing portion has a fabric or textile skirt or annular flange that lies adjacent the inner surface of the epidermis of the animal bearing the catheter. If desired, the skin-passage portion of the catheter is also provided with a fabric or textile sleeve. The fabric or textile is advantageously of Dacron or of Teflon or of like material not attacked by and compatible with the body environment.
Inventors
- 👤 Harold P Mcdonald Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:36
CPC Classifications
A; A61; A61M; A61M39/00; A61M39/02; A61M39/0247; A61M1/00; A61M1/14; A61M1/28; A61M1/285; A61M25/00; A61M25/0067; A61M25/0068; A61M25/007; A61M2039/0291; A61M2039/0294
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
33 words
The tubular device as in claim 1 for insertion into and abdominal cavity, wherein said inner portion has an open inner end and is provided adjacent said end with a plurality of apertures.
Claim 2
Dependent Claim
14 words
The tubular device as in claim 1 wherein said flange is open mesh fabric.
Claim 3
Dependent Claim
13 words
The tubular device as in claim 3 wherein said fabric is poly(ethylene terephthalate).
Claim 4
Dependent Claim
12 words
The tubular device as in claim 3 wherein said fabric is polytetrafluoroethylene.
Claim 5
Dependent Claim
22 words
The tubular device as in claim 1 wherein said flexible tube is of silicone rubber and said flange is adhesively attached thereto.
Claim 6
Dependent Claim
20 words
The tubular device of claim 1 wherein said sleeve is of poly(ethylene terephthalate) and is adhesively secured to said tube.
Claim 7
Dependent Claim
155 words
A catheter for insertion into an abdominal cavity including a peritoneum, which comprises: a flexible silicone rubber tube having an outer portion adapted to lie outside said cavity, and an inner portion adapted to lie within said cavIty and said peritoneum when later emplaced, said inner portion having an open end and a plurality of apertures disposed in rows adjacent said end and extending about one-fourth of the length of said tube, said outer portion having an open end, and means for closing said open end of said outer portion, a flexible annular flange of open-mesh fabric chosen from the group poly(ethylene terephthalate) and polymerized tetrafluoroethylene, adhesively attached to said tube and spaced from each of said ends, and a sleeve of said open-mesh fabric encircling the portion of said inner portion proximal to said flange and extending to the inner surface of the peritoneum when emplaced, and being adhesively secured to said inner portion.
Claim 8
Dependent Claim
55 words
The catheter of claim 8 wherein a rigid plastic, sterilizable, tubular connector having an open end is affixed to said outer portion''s open end and adapted to conduct fluid from said tube to a dialysis machine when in operation, and said means for closing comprises a sterilizable removable cap adapted to close said rigid connector.
Claim 9
Dependent Claim
196 words
A catheter for insertion into an abdominal cavity including a peritoneum, which comprises: a straight flexible silicone rubber tube having two ends and an outer portion adapted to lie outside said cavity and an inner portion adapted to lie within said cavity and said peritoneum when later emplaced, said inner portion having an open end and a plurality of apertures disposed in rows adjacent said end and extending about one-fourth of the length of said tube, said outer end having an open end, a flexible annular flange adhesively attached to said tube and spaced from each of said ends, said flange being of open-mesh fabric chosen from the group poly(ethylene terephthalate) and polymerized tetrafluoroethylene, a rigid plastic, sterilizable, tubular connector having an open end and affixed to said outer portion open end and adapted to conduct fluid from said tube to a dialysis machine when in operation, a sterilizable removable cap adapted to close said rigid connector, and a sleeve of said open-mesh fabric encircling a part of said inner portion extending inwardly from said flange to the inner surface of the peritoneum when emplaced, and being adhesively secured to that part of said inner portion.
Claim 10
Dependent Claim
132 words
A shunt cannula assembly adapted to withdraw and return blood from blood vessels disposed under the skin in an animal body, for hemodialysis, which comprises in combination: a pair of straight flexible tubes, each said tube having two open ends, an outer portion adapted to lie outside said skin and an inner portion adapted to lie under said skin, said outer portions of said tubes being detachably connected together in open communication or through a purification means, a flexible, annular fabric flange adhesively attached to each said tube and adapted to lie subcutaneously adjacent the inner surface of said skin, said flange being of open-mesh fabric chosen from the group poly(ethylene terephthalate) and polymerized tetrafluoroethylene, and a sleeve of said fabric encircling one of each said inner portion inwardly of said flange.
Claim 11
Dependent Claim
31 words
The assembly of claim 11 having a rigid tubular tip portion disposed at the inner end of each said tube and having an open end, said tip being of polymerized tetrafluoroethylene.
Claim 12
Dependent Claim
155 words
A shunt cannula assembly adapted to withdraw and return blood from blood vessels disposed under the skin in an animal body, for hemodialysis, which comprises: a pair of straight flexible silicone rubber tubes each having two open ends, an outer portion adapted to lie outside said skin, and an inner portion adapted to lie under said skin. a flexible, annular fabric flange adhesively attached to each said tube and adapted to lie subcutaneously adjacent the inner surface of said skin, said flange being of open-mesh fabric chosen from the group poly(ethylene terephthalate) and polymerized tetrafluroethylene, A rigid tubular tip portion disposed at the inner end of each said tube and having an open end, said tip being of polymerized tetrafluroethylene, said outer portions of said tubes being releasable connected and sealed to each other in open communication, and a sleeve of said fabric encircling the length of each said inner portion inwardly of said flange.
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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) | 1975-01-10 | 1975-07-12 | 1976-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-10 | 1979-07-12 | 1980-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-10 | 1983-07-12 | 1984-01-11 | $7700.00 | Window Closed / Lapsed |