Patent EP0520177A1 successfully refreshed from Google Patents.
EP0520177A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Resorbable tendon and bone augmentation device
Assignee: AO Technology AG
•
Filing: 1992-05-14
•
Granted: —
•
Expires: 2012-05-14
Abstract
Abstract The device is implantable in the living body for attachment and augmentation of tendons and/or reinforcement of bones. It comprises a substantially flat membrane having a rounded outer shape and at least two perforations. The membrane contains resorbable or degradable polymeric and/or polymeric-ceramic material, having a Young's modulus in the range of 1 to 50 GPa and a tensile strength in the range of 0.1 to 20.0 GPa. It allows a more secure fixation of transosseous sutures.
Inventors
- 👤 Sylwester Gogolewski
- 👤 Martin Beck
- 👤 Christian Gerber
- 👤 Alberto G. Scheeberger
- 👤 Stephan Perren
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 13:02
CPC Classifications
A; A61; A61L; A61L31/00; A61L31/14; A61L31/148; A61B; A61B17/00; A61B17/04; A61B17/0401; A61B17/064; A61B17/0642; A61B17/11; A61B17/1146; A61B17/56; A61B17/58; A61L31/04; A61L31/06; A61L31/12; A61L31/125; A61B17/16; A61B17/17; A61B17/1739; A61B17/1778; A61B17/1796; A61B2017/00004; A61B2017/0406; A61B2017/0414; A61B2017/0446; A61B2017/0459; A61B2017/0464; A61B2017/0641; A61F; A61F2/00; A61F2/02; A61F2/08; A61F2/0811
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
64 words
A device implantable in the living body for attachment and augmentation of tendons and/or reinforcement of bones, comprising a substantially flat membrane having a rounded outer shape and at least two perforations; the membrane containing resorbable or degradable polymeric material, having a Young's modulus in the range of l to 50 GPa; and a tensile strength in the range of 0.1 to 20.0 GPa.
Claim 2
Independent Claim
16 words
A device according to claim l, wherein said membrane additionally contains resorbable or degradable polymericceramic material.
Claim 3
Independent Claim
23 words
A device according to claim l or 2, wherein said resorbable or degradable polymeric material and/or said polymeric-ceramic material is of nonporous structure.
Claim 4
Independent Claim
42 words
A device according claim l or 2, wherein said resorbable or degradable polymeric material and/or said polymeric-ceramic material is of porous structure with controlled porosity in the range of 0.05 to 200 rim, preferably in the range of 0.2 to 5.0 pm.
Claim 5
Independent Claim
19 words
A device according to one of the claims l to 4, wherein said membrane has a circular outer shape.
Claim 6
Independent Claim
34 words
A device according to one of the claims 1 to 4, wherein said membrane has the shape of a tape with rounded ends with at least two perforations at each of the two ends.
Claim 7
Independent Claim
22 words
A device according to one of the claims 1 to 6, wherein said membrane is deformable to the shape of a bone.
Claim 8
Independent Claim
23 words
A device according to one of the claims 1 to 7, wherein the thickness of said membrane is between 0.5 and 6.0 mm.
Claim 9
Dependent Claim
24 words
A device according to claim 8, wherein the thickness of said membrane is between 1.0 and 2.0 mm, preferably between 1.4 and 1.5 mm.
Claim 10
Independent Claim
33 words
A device according to one of the claims 1 to 9, wherein said Young's modulus is in the range of 5 to 15 GPa, preferably in the range of 7 to 10 GPa.
Claim 11
Independent Claim
33 words
A device according to one of the claims 1 to 10, wherein said tensile strength is in the range of 0.5 to 3.0 GPa, preferably in the range of 0.7 to 2.5 GPa.
Claim 12
Independent Claim
40 words
A device according to one of the claims 1 to 11, wherein at least 90 weight percent of said polymeric material has a molecular weight in the range of 200,000 to 400,000, preferably in the range of 300,000 to 350'000.
Claim 13
Independent Claim
34 words
A device according to one of the claims 1 to 12, wherein said polymeric material has a polydispersity in the range of 1.2 to 100.0 , preferably in the range of 1.5 to 3.0.
Claim 14
Independent Claim
31 words
A device according to one of the claims 1 to 13, wherein said polymeric material comprises highly purified polyhydroxyacids, polysaccharides, polyamines, polyaminoacids, polyorthoesters, polyanhydrides, polyamidoesters, polydioxanone, polyesteramides, copolyoxalates, polycarbonates or poly(glutamic-co-leucine).
Claim 15
Dependent Claim
16 words
A device according to claim 14, wherein said polyhydroxyacids comprise polycaprolactone, poly(L-lactide), poly(DL-lactide), polyglycolide, poly(DL-lactide-co-glycolide), poly(DL-lactide-co-caprolactone).
Claim 16
Independent Claim
22 words
A device according to one of the claims 1 to 15, wherein a fibroblast activating agent is incorporated in the polymeric matrix.
Claim 17
Independent Claim
21 words
A device according to one of the claims 1 to 15, wherein an osteoplastic agent is incorporated in the polymeric matrix.
Claim 18
Independent Claim
21 words
A device according to one of the claims 1 to 15, wherein an antibiotic agent is incorporated in the polymeric matrix.
Claim 19
Independent Claim
29 words
A device according to one of the claims 1 to 18, wherein the polymeric material has a degradation rate in situ in the range of 6 to 24 months.
Claim 20
Independent Claim
24 words
A device according to one of the claims 1 to 19, wherein the polymeric chains in the polymeric material are at least partially oriented.
Claim 21
Independent Claim
25 words
A device according to one of the claims 1 to 20, wherein said membrane is preshaped to conform to the curvature of the humeral head.
Claim 22
Independent Claim
39 words
A device according to one of the claims 1 to 21, wherein a surface (14) of said membrane facing the tendon and/or bone is provided with a three-dimensional structure, preferably in the form of spikes (16), corrugations or irregularities.
Claim 23
Independent Claim
27 words
A device according to one of the claims 1 to 22, wherein a surface (14) of said membrane facing the tendon is provided with rounded edges (15).
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.