Patent US3626948A successfully refreshed from Google Patents.
US3626948A
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Absorbable polyglycolic acid suture of enhanced in-vivo strength retention
Assignee: Wyeth Holdings LLC
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Filing: 1968-12-23
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Granted: 1971-12-14
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Expires: 1988-12-23
Abstract
Abstract Polyglycolic acid in shaped form (i.e., a suture) which is substantially free from vaporizable impurities is provided which has significantly greater in-vivo strength retention than shaped polyglycolic acid containing said vaporizable impurities. The improved polyglycolic acid is prepared by vacuum heating shaped polyglycolic acid containing vaporizable impurities to vaporize the impurities therefrom, and then removing the vaporized impurities from the polyglycolic acid. An apparatus for conveniently carrying out the above process is also provided.
Inventors
- 👤 Arthur Glick
- 👤 James B Mcpherson Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:10
CPC Classifications
A; A61; A61L; A61L17/00; A61L17/14
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
13 words
The prosthesis of claim 1 wherein the polyglycolic acid is a surgical suture.
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) | 1974-12-13 | 1975-06-14 | 1975-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-13 | 1979-06-14 | 1979-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-13 | 1983-06-14 | 1983-12-14 | $7700.00 | Window Closed / Lapsed |