Patent EP0304268A2 successfully refreshed from Google Patents.
EP0304268A2
Expired / Lapsed
EP
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Permanent ligament prosthesis
Assignee: Kenvue Brands LLC
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Filing: 1988-08-16
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Granted: —
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Expires: 2008-08-16
Abstract
Abstract A prosthetic device to replace the cruciate ligament in the knee comprises two strands (10,11) of high tenacity polyolefin fibre affixed to a single button (12) at their proximal ends. At its distal end, each strand has a loop (20, 21). A removable guide thread (23) is attached to the distal end of each loop (20, 21) and is of sufficient length to thread each strand through the knee from the proximal attachment point to the distal attachment point. Each strand (20, 21) is composed of a plurality of fine filaments and has a breaking strength of at least 1,000 pounds (4.45 kN) and a diameter of between 4 and 6 mm.
Inventors
- 👤 Elizabeth H. Chen
- 👤 Alastair J.T. Clemow
- 👤 Steven W. Arms
- 👤 Malcolm H. Pope
- 👤 Per Renstrom
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 23:44
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/08; A61F2/0811; A61F2002/0817; A61F2002/0823; A61F2002/0829; A61F2002/0847; A61F2002/0852; A61F2002/087; A61F2002/0876; A61F2002/0882; A61F2002/0888
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
100 words
An anterior cruciate ligament prosthesis, comprising two strands of high tenacity polyolefin fiber affixed to a single button at their proximal ends, a loop at the distal end of each strand, a removable guide thread attached to the distal end of each loop, the removable thread being of sufficient length to thread each strand through the knee from the proximal point of attachment to a distal point of attachment, each strand being composed of a plurality of individual fine filaments, each strand having a breaking strength of at least 1,000 pounds and a diameter of between 2 and 6 millimeters.
Claim 2
Dependent Claim
100 words
An anterior cruciate ligament prosthesis, comprising two strands of high tenacity polyolefin fiber affixed to a single button at their proximal ends, a loop at the distal end of each strand, a removable guide thread attached to the distal end of each loop, the removable thread being of sufficient length to thread each strand through the knee from the proximal point of attachment to a distal point of attachment, each strand being composed of a plurality of individual fine filaments, each strand having a breaking strength of at least 1,000 pounds and a diameter of between 2 and 6 millimeters.
Claim 3
Dependent Claim
44 words
The prosthesis of Claim 1 in which said button has a top surface and a bottom surface, a knotted end of each strand in on the top surface of said button and is embedded in an adhesive overlying the top surface of the button.
Claim 4
Dependent Claim
16 words
The prosthesis of Claim 1 or 2 in which the fibers of said strands are polyethylene.
Claim 5
Dependent Claim
18 words
The prosthesis of Claim 1, 2 or 3 in which each strand contains from 8,000 to 14,000 filaments.
Claim 6
Dependent Claim
18 words
The prosthesis of Claim 4 in which the diameter of each filament is between 30 and 40 microns.
Claim 7
Dependent Claim
34 words
The prosthesis of any of Claims 1 to 5 in which each strand is a continuous length of yarn, and the ends of said yarn are knotted on the top surface of said button.
Claim 8
Dependent Claim
21 words
The prosthesis of any of Claims 1 to 6 in which each loop is threaded through two holes in said button.
Claim 9
Dependent Claim
25 words
The prosthesis of any of Claims 1 to 7 in which at least a portion of the strands are encased in a biocompatible plastic material.
Claim 10
Dependent Claim
21 words
The prosthesis of any of Claims 1 to 8 in which the strands have a diameter between 4 and 6 millimeters.
Claim 11
Dependent Claim
23 words
The prosthesis of any of Claims 1 to 9 in which the strands have a twist of less than three twists per inch.
References Cited (Backward Citations)
No citation records indexed.
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