Patent US3587586A successfully refreshed from Google Patents.
US3587586A
Expired / Lapsed
US
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Porous collagen anastomotic cuff
Assignee: Ethicon Inc
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Filing: 1968-03-15
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Granted: 1971-06-28
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Expires: 1988-03-15
Abstract
Abstract A tubular prosthesis useful in the anastomosis of blood vessels is prepared by weaving collagen strands to form a tubular fabric and immersing this structure in an aqueous acid solution containing acid-swollen collagen fibrils to swell said collagen strands. The tubular structure is then removed from the swelling solution and lyophilized to form a sponge-like tubular structure.
Inventors
- 👤 Richard L Kronenthal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:37
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/04; A61F2/06; A61L; A61L27/00; A61L27/14; A61L27/22; A61L27/24; A61F2310/00; A61F2310/00005; A61F2310/00365
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |