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Patent US4662886A successfully refreshed from Google Patents.
US4662886A
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Surgical element
Assignee: Surgicraft Ltd
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Filing: 1985-06-04
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Granted: 1987-05-05
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Expires: 2005-06-04
Abstract
Abstract A surgical element (1), such as a suture or a replacement for a ligament, comprises a core (2) consisting of a multiplicity of flexible filaments, such as fine carbon fibres, and partial sheathing (3) formed of standard implantable grade polymer, such as a polyester, in at least two groups (3X, 3Y) totalling less in width than the circumference of the core and interwoven in contra-rotation so that areas (4) of the core are exposed at frequent intervals, to encourage penetration and ingrowth of fresh tissue between the core filaments.
Inventors
- 👤 David J. Moorse
- 👤 Angus E. Strover
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:14
CPC Classifications
D; D04; D04C; D04C1/00; D04C1/06; D04C1/12; A; A61; A61B; A61B17/00; A61B17/04; A61B17/06; A61B17/06166; A61F; A61F2/00; A61F2/02; A61F2/08; A61L; A61L17/00; A61L17/04; A61L27/00; A61L27/02; A61L27/08; A61L27/14; A61L27/18; A61B2017/06171; A61F2310/00; A61F2310/00005; A61F2310/00161; D07; D07B; D07B5/00; D07B5/005; D10; D10B; D10B2509/00; D10B2509/04
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
95 words
A surgical element comprising a core consisting of a multiplicity of flexible filaments and partial sheathing therefor formed of filaments of at least one standard implantable grade polymer distributed in at least two groups of a width such that the aggregate of their widths is less than the circumference of the core, the groups of sheathing filaments being interwoven with contra-rotation about the core so that areas of the core filaments are exposed at frequent intervals along the length of the element so as to promote penetration and ingrowth of tissue between the core filaments.
Claim 2
Dependent Claim
95 words
A surgical element comprising a core consisting of a multiplicity of flexible filaments and partial sheathing therefor formed of filaments of at least one standard implantable grade polymer distributed in at least two groups of a width such that the aggregate of their widths is less than the circumference of the core, the groups of sheathing filaments being interwoven with contra-rotation about the core so that areas of the core filaments are exposed at frequent intervals along the length of the element so as to promote penetration and ingrowth of tissue between the core filaments.
Claim 3
Dependent Claim
15 words
A surgical element as in claim 1, wherein the core filaments are fine carbon fibres.
Claim 4
Dependent Claim
18 words
A surgical element as in claim 1, wherein the core filaments are formed of biocompatible or bioreactive polymer.
Claim 5
Dependent Claim
13 words
A surgical element as in claim 1 wherein the polymer is a polyester.
Claim 6
Dependent Claim
57 words
A surgical element as in claim 1, formed by doubling up said surgical element with at least one loop positioned at least at one end forming an eye for use in securing to bone by means of an attachment device engaging with the eye for use as a prosthesis or replacement element for a ligament or tendon.
Claim 7
Dependent Claim
12 words
A surgical element as in claim 1 coated with a biocompatible lubricant.
Claim 8
Dependent Claim
37 words
A surgical element as in claim 1, wherein the core filaments are provided under negligible tension during weaving of the sheathing filaments sufficient to cause the core filaments in the exposed areas to bulge and separate slightly.
Claim 9
Dependent Claim
33 words
A surgical element as in claim 1, wherein two equal groups of sheathing filaments are incorporated and interwoven to provide the exposed areas of core filaments to alternate from side-to-side of the element.
Claim 10
Dependent Claim
15 words
A surgical element as in claim 1, said surgical element being doubled up on itself.
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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) | 1990-05-04 | 1990-11-03 | 1991-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-04 | 1994-11-03 | 1995-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-04 | 1998-11-03 | 1999-05-05 | $7700.00 | Window Closed / Lapsed |