USRE31618E
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tubular organic prosthesis
Assignee: Sumitomo Electric Industries Ltd
•
Filing: 1982-04-19
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Granted: 1984-07-03
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Expires: 2002-04-19
Abstract
Abstract A tubular organic prosthesis comprising a porous tubing of polytetrafluoroethylene and elastic fibers provided helically on its outside surface.
Inventors
- 👤 Hiroshi Mano
- 👤 Toshisaburo Oga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:13
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/04; A61F2/06; A61L; A61L27/00; A61L27/14; A61L27/16
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
19 words
A tubular organic prosthesis comprising a porous tubing of polytetrafluoroethylene and elastic fibers provided helically on its outside surface.
Claim 2
Dependent Claim
19 words
A tubular organic prosthesis comprising a porous tubing of polytetrafluoroethylene and elastic fibers provided helically on its outside surface.
Claim 3
Dependent Claim
29 words
The prosthesis of claim 1, wherein said polytetrafluoroethylene tubing has a microstructure composed of fibers and nodes connected to one another by said fibers, said fibers being radially distributed.
Claim 4
Dependent Claim
13 words
The prosthesis of claim 1, wherein said elastic fibers are made from polyurethane.
Claim 5
Dependent Claim
12 words
The prosthesis of claim 3, wherein said polyurethane is a polyether polyurethane.
Claim 6
Dependent Claim
19 words
The prosthesis of claim 4, wherein said prosthesis has a suture tear resistance of about 300 g/ply or more.
Claim 7
Dependent Claim
12 words
The prosthesis of claim 1, wherein said elastic fibers are rubber yarns.
Claim 8
Dependent Claim
17 words
The prosthesis of claim 1, wherein said fibers have a denier of about 150 to about 5,000.
Claim 9
Dependent Claim
16 words
The prosthesis of claim 1, wherein said fibers have a tensile strength of about 1 g/denier.
Claim 10
Dependent Claim
17 words
The prosthesis of claim 1, wherein said PTFE tubing has a porosity of at least about 70%.
Claim 11
Dependent Claim
19 words
The prosthesis of claim 1, wherein said PTFE tubing has a wall thickness of about 0.3 to 1.0 mm.
Claim 12
Dependent Claim
22 words
The prosthesis of claim 1, wherein said PTFE tubing has an average pore diameter of about 2 μm to about 100 μm.
Claim 13
Dependent Claim
19 words
The prosthesis of claim 1, wherein said prosthesis has a suture tear resistance of about 300 g/ply or more.
Claim 14
Dependent Claim
16 words
The tubular organic prosthesis of claim 1, wherein said tubular organic prosthesis is a vascular prosthesis.
Claim 15
Dependent Claim
19 words
The prosthesis of claim 13, wherein said prosthesis has a suture tear resistance of about 300 g/ply or more.
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) | 1987-07-03 | 1988-01-02 | 1988-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-03 | 1992-01-02 | 1992-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-03 | 1996-01-02 | 1996-07-03 | $7700.00 | Window Closed / Lapsed |