Patent US4834755A successfully refreshed from Google Patents.
US4834755A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Triaxially-braided fabric prosthesis
Assignee: Howmedica Osteonics Corp
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Filing: 1985-03-04
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Granted: 1989-05-30
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Expires: 2005-03-04
Abstract
Abstract A novel prosthesis for use in repairing or replacing soft tissue is disclosed, which comprises a triaxially-braided fabric element having interwoven first, second and third sets of fibers, with the fibers of the second and third sets being oriented at substantially the same acute braiding angle with respect to the fibers of the first set. An elongated ligament prosthesis exhibiting the desired properties of high strength and high elasticity may be prepared by selecting high elasticity fibers for the first set, orienting said first set of fibers in the longitudinal direction of the prosthesis and selecting fibers having high yield strength and high Young's modulus for the second and third sets. A tubular prosthesis in which high elasticity fibers are oriented in the longitudinal direction is highly suitable for use as a vascular prosthesis. A prosthesis of the invention may also be manufactured in the form of a prosthetic heart valve leaflet.
Inventors
- 👤 Thomas A. Silvestrini
- 👤 Joseph E. Laptewicz, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:52
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/24; A61F2/2412; A61F2/04; A61F2/06; A61F2/08
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
215 words
A prosthesis for use in repairing or replacing ligament or tendon tissue, said prosthesis having first and second opposed end portions adapted to be attached with the prosthesis in tension to the body of a patient, with said two end portions defining between them the longitudinal direction of the prosthesis, and said prosthesis comprising a triaxially-braided fabric element containing interwoven first, second and third sets of fibers, with the fibers of said first set being elastic and oriented in substantially said longitudinal direction of the prosthesis, the fibers of said second and third sets being oriented at substantially the same acute braiding angle of from about 10° to about 80° with respect to the fibers of said first set, the fibers of said first set having greater elasticity than the fibers of both of said second and third sets, the fibers of said second and third sets having greater yield strength and Young's modulus than the fibers of said first set, and said prosthesis exhibiting a tensile break point of at least about 75 kg, the fibers of said second set being identical with the fibers of said third set, and each of said second and third sets comprising two or more different types of fibers arranged to alternate in the same regular repeating sequence.
Claim 2
Dependent Claim
215 words
A prosthesis for use in repairing or replacing ligament or tendon tissue, said prosthesis having first and second opposed end portions adapted to be attached with the prosthesis in tension to the body of a patient, with said two end portions defining between them the longitudinal direction of the prosthesis, and said prosthesis comprising a triaxially-braided fabric element containing interwoven first, second and third sets of fibers, with the fibers of said first set being elastic and oriented in substantially said longitudinal direction of the prosthesis, the fibers of said second and third sets being oriented at substantially the same acute braiding angle of from about 10° to about 80° with respect to the fibers of said first set, the fibers of said first set having greater elasticity than the fibers of both of said second and third sets, the fibers of said second and third sets having greater yield strength and Young's modulus than the fibers of said first set, and said prosthesis exhibiting a tensile break point of at least about 75 kg, the fibers of said second set being identical with the fibers of said third set, and each of said second and third sets comprising two or more different types of fibers arranged to alternate in the same regular repeating sequence.
Claim 3
Dependent Claim
40 words
A prosthesis of claim 1 wherein one of the different types of fibers in said second and third sets has a greater yield strength and Young's modulus than the other remaining type or types of fibers in those two sets.
Claim 4
Dependent Claim
36 words
A prosthesis of claim 2 wherein the fibers of said first set are made of a polyester/polyether block copolymer and each of said second and third sets consists of alternating fibers of polyethyleneterephthalate and ultradrawn polyethylene.
Claim 5
Dependent Claim
218 words
A prosthesis for use in repairing or replacing ligament or tendon tissue, said prosthesis having first and second opposed end portions adapted to be attached with the prosthesis in tension to the body of a patient, with said two end portions defining between them the longitudinal direction of the prosthesis, and said prosthesis comprising a triaxially-braided fabric element containing interwoven first, second and third sets of fibers, with the fibers of said first set being elastic and oriented in substantially said longitudinal direction of the prosthesis, the fibers of said second and third sets being oriented at substantially the same acute braiding angle of from about 10° to about 80° with respect to the fibers of said first set, the fibers of said first set having greater elasticity than the fibers of both of said second and third sets, the fibers of said second and third sets having greater yield strength and Young's modulus than the fibers of said first set, and said prosthesis exhibiting a tensile break point of at least about 75 kg, the fibers of said second set being identical with the fibers of said third set, and the fibers of said first set being made of a polyester/polyether block copolymer and the fibers of said second and third sets being made of ultradrawn polyethylene.
Claim 6
Dependent Claim
218 words
A prosthesis for use in repairing or replacing ligament or tendon tissue, said prosthesis having first and second opposed end portions adapted to be attached with the prosthesis in tension to the body of a patient, with said two end portions defining between them the longitudinal direction of the prosthesis, and said prosthesis comprising a triaxially-braided fabric element containing interwoven first, second and third sets of fibers, with the fibers of said first set being elastic and oriented in substantially said longitudinal direction of the prosthesis, the fibers of said second and third sets being oriented at substantially the same acute braiding angle of from about 10° to about 80° with respect to the fibers of said first set, the fibers of said first set having greater elasticity than the fibers of both of said second and third sets, the fibers of said second and third sets having greater yield strength and Young's modulus than the fibers of said first set, and said prosthesis exhibiting a tensile break point of at least about 75 kg, the fibers of said second set being identical with the fibers of said third set, and the fibers of said first set being made of a polyester/polyether block copolymer and the fibers of said second and third sets being made of ultradrawn polyethylene.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-05-29 | 1992-11-28 | 1993-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-29 | 1996-11-28 | 1997-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-29 | 2000-11-28 | 2001-05-30 | $7700.00 | Window Closed / Lapsed |