Patent US3736646A successfully refreshed from Google Patents.
US3736646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of attaching surgical needles to multifilament polyglycolic acid absorbable sutures
Assignee: Wyeth Holdings LLC
•
Filing: 1971-10-18
•
Granted: 1973-06-05
•
Expires: 1991-10-18
Abstract
Abstract Useful surgical elements consist of a sterile synthetic copolymer containing, by mol percent, about 15 to 85 percent glycolic acid and 85 to 15 percent lactic acid, which has enhanced tissue absorption as compared with polylactic acid and enhanced solubility in organic solvents as compared with polyglycolic acid and hence can be cast into sheets during preparation and implantation. Such surgical element may be used alone or in combination with polyglycolic acid or a coating for polyglycolic acid. Other comonomers may be introduced into the system.
Inventors
- 👤 E Schmitt
- 👤 M Epstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:31
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/06; C08G63/08; A; A61; A61L; A61L17/00; A61L17/06; A61L17/10; A61L17/12; A61L27/00; A61L27/14; A61L27/18; A61L27/50; A61L27/58; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49885; Y10T29/49908; Y10T29/49925; Y10T29/49927; Y10T29/49929
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
15 words
The process of claim 1 in which the surgical needle is a drilled end needle.
Claim 2
Dependent Claim
15 words
The process of claim 1 in whIch the surgical needle is a flanged end needle.
References Cited (Backward Citations)
US3125095A
Cited
US2411079A
Cited
US2736956A
Cited
US2865375A
Cited
US2953849A
Cited
US3297033A
Cited
US3611551A
Cited
US3636956A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-04 | 1976-12-04 | 1977-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-04 | 1980-12-04 | 1981-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-04 | 1984-12-04 | 1985-06-05 | $7700.00 | Window Closed / Lapsed |