US4149277A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Artificial tendon prostheses
Assignee: General Atomics Corp
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Filing: 1977-06-22
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Granted: 1979-04-17
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Expires: 1997-06-22
Abstract
Abstract Biocompatible artificial tendon or ligament prostheses having an exterior adherent coating of vapor deposited carbon, comprising a strand of a plurality of fibers each of which is designed to sustain a tensile strain of about 5 percent or less and means for attaching the strand at the implantation site.
Inventors
- 👤 Jack C. Bokros
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:07
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/08; A61F2/0811; A61F2002/0847; A61F2002/0852; A61F2002/087; A61F2002/0876; A61F2002/0882
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
87 words
An artificial tendon or ligament prostheses for prolonged or permanent implantation in a living body and adapted for service at a predetermined maximum tensile load, comprising an elongated, flexible strand comprising a plurality of substrate fibers having a tensile modulus of about 2×10 6 psi or more and capable of sustaining a tensile strain of about 5% or less at the maximum tensile load and having an adherent dense, isotropic carbon coating on said substrate fibers, and means for suitably attaching the tendon prostheses to living tissue.
Claim 2
Dependent Claim
87 words
An artificial tendon or ligament prostheses for prolonged or permanent implantation in a living body and adapted for service at a predetermined maximum tensile load, comprising an elongated, flexible strand comprising a plurality of substrate fibers having a tensile modulus of about 2×10 6 psi or more and capable of sustaining a tensile strain of about 5% or less at the maximum tensile load and having an adherent dense, isotropic carbon coating on said substrate fibers, and means for suitably attaching the tendon prostheses to living tissue.
Claim 3
Dependent Claim
51 words
A prostheses in accordance with claim 1 wherein said fibers are polyethylene terephthalate fibers having a diameter of about 25 microns or less, and wherein said carbon coating has a BAF of about 1.2 or less and a thickness in the range of from about 1000 Angstroms to about 5000 Angstroms.
Claim 4
Dependent Claim
40 words
A prostheses in accordance with claim 1 wherein said attachment means comprises a carbon coated bone affixation element attached at one end of said strand, and a carbon coating soft tissue affixation element at the other end of said strand.
References Cited (Backward Citations)
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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) | 1982-04-16 | 1982-10-16 | 1983-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-16 | 1986-10-16 | 1987-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-16 | 1990-10-16 | 1991-04-17 | $7700.00 | Window Closed / Lapsed |