EP0126520A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Prosthetic ligament and instruments for use in the surgical replacement of ligaments
Assignee: Individual
•
Filing: 1984-02-13
•
Granted: —
•
Expires: 2004-02-13
Abstract
Abstract This invention relates to a new prosthetic ligament (1), and a set of surgical instruments for use in the surgical replacement of a ligament and in particular for inserting a prosthetic ligament into the body. The ligament in accordance with the invention comprises an elongate foraminous flexible strip, the size and distribution of the perforations being substantially uniform along the length of the ligament.
Inventors
- 👤 Bahaa Botros Seedhom
- 👤 Julian Garth Ellis
- 👤 Kyosuke Fujikawa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 16:04
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/08; A61F2/0805; A61B; A61B17/00; A61B17/16; A61B17/17; A61B17/1714; A61B17/1739; A61B17/1764
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
70 words
A prosthetic ligament for implantation between two bones, the ligament being elongate and flexible and including two ends, each end for fixation to a bone, with a central portion of ligament extending between said ends, said central portion comprising a foraminous polyester strip characterised in that the central portion includes perforations having an area of at least 0.01 cm 2 so that tissue ingrowth into the central portion is promoted.
Claim 2
Dependent Claim
70 words
A prosthetic ligament for implantation between two bones, the ligament being elongate and flexible and including two ends, each end for fixation to a bone, with a central portion of ligament extending between said ends, said central portion comprising a foraminous polyester strip characterised in that the central portion includes perforations having an area of at least 0.01 cm 2 so that tissue ingrowth into the central portion is promoted.
Claim 3
Dependent Claim
34 words
A prosthetic ligament according to claim 1, further characterised in that the entire ligament is foraminous and has perforations the size and distribution of which are substantially uniform along the length of the ligament.
Claim 4
Dependent Claim
22 words
A prosthetic ligament according to claim 1, further characterised in that the ligament comprises a polyester fabric with an open weave structure.
Claim 5
Dependent Claim
20 words
A prosthetic ligament according to claim 3, further characterised in that the polyester is polyethylene terephthalate or a copolymer thereof.
Claim 6
Dependent Claim
41 words
A prosthetic ligament according to any one of the claims 2 to 4, further characterised in that the weave of the fabric is mock leno or leno woven in which the weft threads are locked with respect to the warp threads.
Claim 7
Dependent Claim
30 words
A prosthetic ligament according to any one of the preceding claims, further characterised in that the distribution of the perforations is in the range 10 to 40 perforations/cm 2 .
Claim 8
Dependent Claim
27 words
A prosthetic ligament according to claim 6, further characterised in that the distribution of the perforations 2 is in the range 15 to 25 perforations/cm 2 .
Claim 9
Dependent Claim
30 words
A prosthetic ligament according to any one of the preceding claims, further characterised in that the size of the perforations is in the range 0.01 to 0.05 cm 2 .
Claim 10
Dependent Claim
29 words
A prosthetic ligament according to claim 8, further characterised in that the size of the perforations is in the range of 0.0 1 to 0.02 c m 2 .
Claim 11
Dependent Claim
25 words
A prothetic ligament according to any one of the preceding claims, further characterised in that the ligament (1) is tubular, the tube including no core.
Claim 12
Dependent Claim
61 words
A prosthetic ligament according to claim 10, further characterised in that the tube (2) has a first open end and a second closed end (5) and that a first longitudinal slit (3) extends from the first end to a point close to but spaced from the first end, and a second longitudinal slit (4) is situated adjacent the second closed end.
Claim 13
Dependent Claim
18 words
A prosthetic ligament according to claim 11, further characterised in that it cincludes means to pull the ligament.
Claim 14
Dependent Claim
23 words
A prosthetic ligament according to claim 12, further characterised in that the means comprises a cord attached to one end of the ligament
Claim 15
Dependent Claim
36 words
A bone plug extractor for use in the surgical replacement of a ligamnet comprising a hollow cylindrical portion (231 with-one end open, the other end coupled to a handle portion including a flattened bearing surface (25).
Claim 16
Dependent Claim
36 words
A bone plug extractor for use in the surgical replacement of a ligamnet comprising a hollow cylindrical portion (231 with-one end open, the other end coupled to a handle portion including a flattened bearing surface (25).
Claim 17
Dependent Claim
36 words
A bone plug extractor according to claim 14, in which the cylindrical portion (23) includes a slot (24) extending to the open end to facilitate removal of a bone plug from the bone plug extractor (9).
Claim 18
Dependent Claim
35 words
A bone plug extractor according to claim 14 or 15, in which the handle portion includes a gripping area to allow the handle to be gripped while force is applied to the flattened surface (25).
Claim 19
Dependent Claim
85 words
A set of tools for use in the svirgicalireplacement of.prosthetic ligaments comprising a clamp (7) for locating the axis along which a bore is required for fixation of a ligament, a reamer (18) cooperable with the clamp (7) for removing an annulus of bone dust, a bone plug extractor (9) according to any one of claims 14 to 16, of the same diameter as the reamer (81, and a cylindrical drill bit guide (12) of the same diameter as the reamer and bone plug extractor.
Claim 20
Dependent Claim
22 words
A set of tools according to claim 17, also including a rod for removing a bone plug from the bone plug extractor.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.