US4095600A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Normally-solid, bioabsorbable, hydrolyzable, polymeric reaction product
Assignee: Wyeth Holdings LLC
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Filing: 1977-05-05
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Granted: 1978-06-20
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Expires: 1997-05-05
Abstract
Abstract A normally-solid, bioabsorbable, hydrolyzable, polymeric reaction product of (A) a polyglycolic acid composition and (B) a polyester of diglycolic acid and an unhindered glycol and to the process of preparing the same and the use of said polymeric reaction product as a sterile surgical element and as a device for the controlled continuous administration of a predetermined dosage of a drug to a living animal.
Inventors
- 👤 Donald James Casey
- 👤 Martin Epstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:45
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/66; C08G63/664; A; A61; A61L; A61L17/00; A61L17/06; A61L17/10; A61L17/12
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
87 words
A sterile surgical element produced from the polymeric reaction product of (A) a polyglycolic acid composition and (B) a polyester of diglycolic acid and an unhindered glycol; wherein the amount of (B) used is between about 2% and 50%, by weight, based on the total weight of (A) and (B); wherein (A), before reaction with (B), has a molecular weight of at least 30,000 and (B), before reaction with (A), has a molecular weight sufficiently high so as to provide a polymeric material possessing self-supporting film-forming properties.
Claim 2
Dependent Claim
87 words
A sterile surgical element produced from the polymeric reaction product of (A) a polyglycolic acid composition and (B) a polyester of diglycolic acid and an unhindered glycol; wherein the amount of (B) used is between about 2% and 50%, by weight, based on the total weight of (A) and (B); wherein (A), before reaction with (B), has a molecular weight of at least 30,000 and (B), before reaction with (A), has a molecular weight sufficiently high so as to provide a polymeric material possessing self-supporting film-forming properties.
Claim 3
Dependent Claim
16 words
A sterile surgical element according to claim 1 in the form of a suture or ligature.
References Cited (Backward Citations)
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US3297033A
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US3468853A
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US3674901A
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US3867190A
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US3960152A
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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) | 1981-06-19 | 1981-12-19 | 1982-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-19 | 1985-12-19 | 1986-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-19 | 1989-12-19 | 1990-06-20 | $7700.00 | Window Closed / Lapsed |