US4345339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Biologically implantable member for a tendon and/or ligament
Assignee: Sulzer AG
•
Filing: 1981-05-19
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Granted: 1982-08-24
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Expires: 2001-05-19
Abstract
Abstract The tendon and/or ligament substitute is inelastic in the longitudinal direction and is formed of a round rope having a core filament and outer filaments of smaller diameter surrounding the core filament. Each filament is encased in a tube to reduce abrasion and a cover holds the various filaments together. The construction of the filaments insures an increase in elasticity from the inside to the outside as required for biological-medical reasons.
Inventors
- 👤 Arnold Muller
- 👤 Gerhard Brockel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:46
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/08; A61F2/0811; D; D02; D02G; D02G3/00; D02G3/22; D02G3/36; D02G3/44; D02G3/448; D07; D07B; D07B1/00; D07B1/02; D07B1/06; D07B1/0673; D07B1/068; A61F2002/0817; A61F2002/0823; A61F2002/0829; A61F2002/0847; A61F2002/0852; A61F2002/0876; A61F2002/0888; D07B2201/00; D07B2201/20; D07B2201/2083; D07B2201/2089
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
93 words
A biologically implantable member for tendons and ligaments comprising at least one rope having a core filament; a first tube encasing said filament therein in relatively longitudinally movable relation; at least one ring of outer filaments surrounding said first tube and said core filament, each said outer filament being of smaller diameter than said core filament; a plurality of tubes, each said tube encasing a respective outer filament therein in relatively longitudinally movable relation; and a cover encircling said ring whereby said rope has an outwardly increasing bending elasticity from said core filament.
Claim 2
Dependent Claim
93 words
A biologically implantable member for tendons and ligaments comprising at least one rope having a core filament; a first tube encasing said filament therein in relatively longitudinally movable relation; at least one ring of outer filaments surrounding said first tube and said core filament, each said outer filament being of smaller diameter than said core filament; a plurality of tubes, each said tube encasing a respective outer filament therein in relatively longitudinally movable relation; and a cover encircling said ring whereby said rope has an outwardly increasing bending elasticity from said core filament.
Claim 3
Dependent Claim
51 words
A member as set forth in claim 1 which comprises a plurality of said ropes, one of said ropes being disposed as a core rope and others of said ropes being disposed in at least one ring about said core rope and a cover encircling said ropes to form a cable.
Claim 4
Dependent Claim
65 words
A member as set forth in claim 2 which comprises a plurality of said cables, one of said cables being disposed as a core cable and others of said cables being disposed in at least one ring about said core cable, each said other cable having a different number of ropes therein from the remainder of said other cables and a cover surrounding said cables.
Claim 5
Dependent Claim
21 words
A member as set forth in claim 3 wherein each of said tubes and said covers is a braiding or plaiting.
Claim 6
Dependent Claim
18 words
A member as set forth in claim 4 wherein each braiding or plaiting is made of natural silk.
Claim 7
Dependent Claim
21 words
A member as set forth in claim 1 wherein each of said tubes and said cover is a braiding or plaiting.
Claim 8
Dependent Claim
18 words
A member as set forth in claim 6 wherein each braiding or plaiting is made of natural silk.
Claim 9
Dependent Claim
38 words
A member as set forth in claim 1 wherein said rope has a plurality of said rings disposed in concentric relation with said filaments in each successive outer ring being of decreasing diameter outwardly of said core filament.
Claim 10
Dependent Claim
34 words
A member as set forth in claim 8 wherein said core filament has a diameter of between 0.1 to 1.0 millimeter and said outer filaments have a diameter of between 0.05 to 0.5 millimeters.
Claim 11
Dependent Claim
19 words
A member as set forth in claim 1 wherein each filament is made of a CoNi Cr MoTi--wrought alloy.
Claim 12
Dependent Claim
14 words
A member as set forth in claim 1 wherein said rope is longitudinally inelastic.
Claim 13
Dependent Claim
19 words
A member as set forth in claim 1 wherein said outer filaments are helically disposed about said core filament.
References Cited (Backward Citations)
US3176316A
Cited
US3513484A
Cited
US3797047A
Cited
US3805300A
Cited
US3896500A
Cited
US4187558A
Cited
US4246660A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-08-23 | 1986-02-22 | 1986-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-23 | 1990-02-22 | 1990-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-23 | 1994-02-22 | 1994-08-24 | $7700.00 | Window Closed / Lapsed |