Patent US2712885A successfully refreshed from Google Patents.
US5176708A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prosthetic implant
Assignee: Sulzer AG
•
Filing: 1991-02-28
•
Granted: 1993-01-05
•
Expires: 2011-02-28
Abstract
Abstract The ligament prosthesis is formed of concentric tubes of filaments threads. In addition, a layer of elastomer is disposed over at least the outermost tube to act as an impermeable layer to the passage of abraded material from within the tubes into the lining. The thickness of the elastomer layer is at most 0.1 millimeter. The elastomer may also be provided on and about the threads of the inner tubes to reduce a migration of abraded particles therein.
Inventors
- 👤 Otto Frey
- 👤 Peter Dittes
- 👤 Rudolf Koch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:26
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/08
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
103 words
A prosthetic implant comprising a plurality of concentrically disposed braided tubes, each said tube being composed of textile threads; and a layer of elastomer disposed over at least an outermost tube, said layer being impermeable to the passage of abraded material from within said tubes and being of a thickness of at most 0.1 millimeters, wherein each braided tube consists of multi-filament threads, of first portion of said individual filaments being composed of a first material and a second portion of said individual filaments being composed of a second material, wherein said first material has a higher melting point than said second material.
Claim 2
Dependent Claim
103 words
A prosthetic implant comprising a plurality of concentrically disposed braided tubes, each said tube being composed of textile threads; and a layer of elastomer disposed over at least an outermost tube, said layer being impermeable to the passage of abraded material from within said tubes and being of a thickness of at most 0.1 millimeters, wherein each braided tube consists of multi-filament threads, of first portion of said individual filaments being composed of a first material and a second portion of said individual filaments being composed of a second material, wherein said first material has a higher melting point than said second material.
Claim 3
Dependent Claim
18 words
An implant as set forth in claim 1 wherein said threads contain filaments of polythene terephthalate and polythene.
References Cited (Backward Citations)
CA708000A
Cited
US3540452A
Cited
US4246660A
Cited
US4345339A
Cited
US4728329A
Cited
EP0238263A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-01-05 | 1996-07-06 | 1997-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-01-05 | 2000-07-06 | 2001-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-01-05 | 2004-07-06 | 2005-01-05 | $7700.00 | Window Closed / Lapsed |