US4362162A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surgical sutures
Assignee: Daikin Industries Ltd
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Filing: 1981-03-23
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Granted: 1982-12-07
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Expires: 2001-03-23
Abstract
Abstract A surgical suture which is filled with copolymer of tetrafluoroethylene and another polymerizable monomer and has outstanding properties, and a process for preparing the same.
Inventors
- 👤 Takeaki Nakajima
- 👤 Tatsushiro Yoshimura
- 👤 Yukihiko Karasawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:47
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/04; A61B17/06; A61B17/06166; A61L; A61L17/00; A61L17/14; A61L17/145; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2927; Y10T428/2933; Y10T428/2964; Y10T428/2967; Y10T428/2969
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
74 words
A surgical suture characterized in that a multifilamentous suture has incorporated in its interstices a copolymer of tetrafluoroethylene and the other copolymerizable monomer in an amount of about 1% to about 30% by weight based on the weight of the multifilamentous suture, the copolymer being of 100-500 mμ in mean particle size, and that the portion of the copolymer present at least in the vicinity of the surface of the suture has been baked.
Claim 2
Dependent Claim
74 words
A surgical suture characterized in that a multifilamentous suture has incorporated in its interstices a copolymer of tetrafluoroethylene and the other copolymerizable monomer in an amount of about 1% to about 30% by weight based on the weight of the multifilamentous suture, the copolymer being of 100-500 mμ in mean particle size, and that the portion of the copolymer present at least in the vicinity of the surface of the suture has been baked.
Claim 3
Dependent Claim
23 words
A suture as defined in claim 1 wherein said the other monomer is at least one of hexafluoropropylene, perfluorovinyl ether, ethylene and propylene.
Claim 4
Dependent Claim
23 words
A suture as defined in claim 1 wherein the copolymer is composed of tetrafluoroethylene and hexafluoropropylene in a ratio of 95:5 to 80:20.
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) | 1985-12-06 | 1986-06-07 | 1986-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-12-06 | 1990-06-07 | 1990-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-12-06 | 1994-06-07 | 1994-12-07 | $7700.00 | Window Closed / Lapsed |