Patent US4946467A successfully refreshed from Google Patents.
US4946467A
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Surgical suture
Assignee: Gunze Ltd
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Filing: 1989-03-08
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Granted: 1990-08-07
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Expires: 2009-03-08
Abstract
Abstract A suture comprising a core of at least one synthetic fiber filament yarns, and a covering layer formed of a plurality of silk strands and sheathing the core, the core and the covering layer having substantially the same elongation at break. The filament yarns have increased modulus of elasticity and increased breaking strength to thereby give the suture improved breaking strength and also have enhanced rigidity to render the suture highly amenable to the correction of its deformation and easier to handle.
Inventors
- 👤 Shigeo Ohi
- 👤 Masakazu Suzuki
- 👤 Toru Yamamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:08
CPC Classifications
D; D04; D04C; D04C1/00; D04C1/06; D04C1/12; A; A61; A61B; A61B17/00; A61B17/04; A61B17/06; A61B17/06166; A61L; A61L17/00; A61L17/04; A61L17/14; A61L17/145; D07; D07B; D07B1/00; D07B1/02; D07B2201/00; D07B2201/20; D07B2201/2083; D07B2201/209; D07B2401/00; D07B2401/20; D07B2401/2005
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
47 words
A surgical suture characterized in that the suture comprises a core of at least one synthetic fiber filament yarn, and a covering layer formed of a plurality of silk strands and sheathing the core, the core and the covering layer having substantially the same elongation at break.
Claim 2
Dependent Claim
47 words
A surgical suture characterized in that the suture comprises a core of at least one synthetic fiber filament yarn, and a covering layer formed of a plurality of silk strands and sheathing the core, the core and the covering layer having substantially the same elongation at break.
Claim 3
Dependent Claim
40 words
A suture as defined in claim 1 wherein the core is formed of a plurality of synthetic fiber filament yarns extending substantially in parallel to one another and each having substantially the same elongation at break as the covering layer.
Claim 4
Dependent Claim
26 words
A suture as defined in claim 2 wherein each of the filament yarns is at least 18% to not greater than 24% in elongation at break.
Claim 5
Dependent Claim
35 words
A suture as defined in claim 1 wherein the core is formed of a plurality of twisted synthetic fiber filament yarns and made to have substantially the same elongation at break as the covering layer.
Claim 6
Dependent Claim
15 words
A suture as defined in claim 4 wherein the synthetic fiber filament yarns are single-twisted.
Claim 7
Dependent Claim
15 words
A suture as defined in claim 4 wherein the synthetic fiber filament yarns are plied.
Claim 8
Dependent Claim
15 words
A suture as defined in claim 5 which is 9--0 to 3--0 in USP size.
Claim 9
Dependent Claim
15 words
A suture as defined in claim 6 which is 2--0 to 10 in USP size.
Claim 10
Dependent Claim
35 words
A suture as defined in claim 1 wherein the core is formed of a plurality of braided synthetic fiber filament yarns and made to have substantially the same elongation at break as the covering layer.
Claim 11
Dependent Claim
33 words
A suture as defined in claim 1 wherein the plurality of silk strands are braided to form the covering layer and made to have substantially the same elongation at break as the core.
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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) | 1993-08-06 | 1994-02-05 | 1994-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-08-06 | 1998-02-05 | 1998-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-08-06 | 2002-02-05 | 2002-08-07 | $7700.00 | Window Closed / Lapsed |