US4003382A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retention catheter and method of manufacture
Assignee: Ethicon Inc
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Filing: 1975-07-25
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Granted: 1977-01-18
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Expires: 1995-07-25
Abstract
Abstract An all plastic retention catheter of the Foley type having a body of a thermoplastic polyurethane and a balloon of a thermosetting polyurethane. The catheter may be fabricated by a method wherein the thermosetting polyurethane balloon sleeve is molded with integral bands of a thermoplastic polyurethane polymer spaced at either end of the sleeve and subsequently sealed to the catheter body by fusing the thermoplastic bands to the body material with heat or solvent.
Inventors
- 👤 Denis G. Dyke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:17
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/10; A61M25/1027; A61M25/1029; A61M25/1034
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
120 words
A retention catheter comprising: a. an elongated flexible thermoplastic tube having a distal end and a proximal end and having a drainage lumen and an inflation lumen defined by the walls of said tube and extending from said proximal end to near said distal end, said inflation lumen terminating in an inflation port in the wall of the tube near the distal end thereof, said drainage lumen terminating in a drainage port in the wall of the tube intermediate said inflation port and said distal end, and b. a cylindrical thermosetting polyurethane balloon sleeve encircling a longitudinal section of said tube containing said inflation port and having end margins sealed to said tube on either side of said inflation port.
Claim 2
Dependent Claim
120 words
A retention catheter comprising: a. an elongated flexible thermoplastic tube having a distal end and a proximal end and having a drainage lumen and an inflation lumen defined by the walls of said tube and extending from said proximal end to near said distal end, said inflation lumen terminating in an inflation port in the wall of the tube near the distal end thereof, said drainage lumen terminating in a drainage port in the wall of the tube intermediate said inflation port and said distal end, and b. a cylindrical thermosetting polyurethane balloon sleeve encircling a longitudinal section of said tube containing said inflation port and having end margins sealed to said tube on either side of said inflation port.
Claim 3
Dependent Claim
24 words
A catheter of claim 1 wherein that portion of the balloon sleeve intermediate the end margins is substantially free from adhesion to said tube.
Claim 4
Dependent Claim
32 words
A catheter of claim 1 wherein said thermosetting polyurethane balloon sleeve is characterized by a break elongation in excess of 400 percent and an elongation set of less than about 15 percent.
Claim 5
Dependent Claim
12 words
A catheter of claim 1 wherein said tube is a thermoplastic polyurethane.
Claim 6
Dependent Claim
23 words
A catheter of claim 4 wherein said end margins of said balloon sleeve are adhesively sealed to said tube with a polyurethane-isocyanate adhesive.
Claim 7
Dependent Claim
26 words
A catheter of claim 1 wherein said tube is comprised of a material selected from the group consisting of polyvinyl chloride, polyvinylidene chloride and silicone elastomers.
Claim 8
Dependent Claim
10 words
A catheter of claim 1 wherein said tube is pigmented.
Claim 9
Dependent Claim
13 words
A catheter of claim 1 wherein said tube and said balloon are pigmented.
Claim 10
Dependent Claim
20 words
A catheter of claim 7 wherein said tube is pigmented with about 0.01 to 1% by weight of titanium dioxide.
Claim 11
Dependent Claim
138 words
A retention catheter comprising: a. an elongated flexible thermoplastic polyurethane tube having a distal end and a proximal end and having a drainage lumen and an inflation lumen defined by the walls of said tube and extending from said proximal end to near said distal end, said inflation lumen terminating in an inflation port in the wall of the tube near the distal end thereof, said drainage lumen terminating in a drainage port in the wall of the tube intermediate said inflation port and said distal end, and b. a cylindrical thermosetting polyurethane balloon sleeve encircling a longitudinal section of said tube containing said inflation port and having end margins sealed to said tube on either side of said inflation port, said end margins comprising bands of thermoplastic polyurethane integral with the inner surface of the balloon sleeve.
Claim 12
Dependent Claim
138 words
A retention catheter comprising: a. an elongated flexible thermoplastic polyurethane tube having a distal end and a proximal end and having a drainage lumen and an inflation lumen defined by the walls of said tube and extending from said proximal end to near said distal end, said inflation lumen terminating in an inflation port in the wall of the tube near the distal end thereof, said drainage lumen terminating in a drainage port in the wall of the tube intermediate said inflation port and said distal end, and b. a cylindrical thermosetting polyurethane balloon sleeve encircling a longitudinal section of said tube containing said inflation port and having end margins sealed to said tube on either side of said inflation port, said end margins comprising bands of thermoplastic polyurethane integral with the inner surface of the balloon sleeve.
Claim 13
Dependent Claim
31 words
A catheter of claim 10 wherein said thermosetting polyurethane balloon sleeve is characterized by a break elongation in excess of 400 percent and an elongation set of less than about 15%.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-01-18 | 1980-07-19 | 1981-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-18 | 1984-07-19 | 1985-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-18 | 1988-07-19 | 1989-01-18 | $7700.00 | Window Closed / Lapsed |