EP0698382A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Prosthetic bearing element and process for making such an element
Assignee: Stryker Ireland Ltd
•
Filing: 1995-08-18
•
Granted: —
•
Expires: 2015-08-18
Abstract
Abstract A prosthetic bearing element comprising a backing which supports a bearing liner having a bearing surface, said backing being made from a "hard" polymeric material having a minimum hardness value of 55 N/mm and said bearing liner being made from a "soft" elastomeric polyurethane material having a hardness value of 3.0 to 9.0 N/mm.
Inventors
- 👤 Nigel Dr. Smith
- 👤 Christina Dr. Doyle
- 👤 Eric Dr. Jones
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-25 17:31
CPC Classifications
A; A61; A61L; A61L27/00; A61L27/14; A61L27/18; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/32; A61F2/34; A61F2/38; A61L27/16; A61F2/3094; A61F2/30965; A61F2/30988; A61F2/3099; A61F2/389; A61F2002/30001; A61F2002/30003; A61F2002/30004; A61F2002/30016; A61F2002/30316; A61F2002/30535; A61F2002/30563; A61F2/30767; A61F2002/30929; A61F2002/30971; A61F2240/00; A61F2240/001; A61F2250/00; A61F2250/0014; A61F2250/0019; A61F2310/00; A61F2310/00389; A61F2310/00952
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
54 words
A prosthetic bearing element comprising a backing which supports a bearing liner having a bearing surface, said backing being made from a "rigid" polymeric material having a minimum hardness value of 65 N/mm and said bearing liner being made from a "soft" elastomeric polyurethane material having a hardness value of 3.0 to 9.0 N/mm.
Claim 2
Dependent Claim
18 words
A prosthetic bearing element as claimed in claim 1 in which said liner is bonded to said backing.
Claim 3
Dependent Claim
17 words
A prosthetic bearing element as claimed in claim 2 in which said backing is made from polyurethane.
Claim 4
Dependent Claim
16 words
A prosthetic bearing element as claimed in claim 3 in which said polyurethane is Corothane 75D.
Claim 5
Dependent Claim
21 words
A prosthetic bearing element as claimed in claim 2 in which said backing is made from carbon fibre reinforced polybutyleneterphthlate (CFR-PBT).
Claim 6
Dependent Claim
19 words
A prosthetic bearing element as claimed in claim 2 in which said backing material is made from polyetheretherketone (CFR-PEEK).
Claim 7
Dependent Claim
18 words
A prosthetic bearing element as claimed in claim 2 in which said backing material is made from polymethylmethacrylate.
Claim 8
Dependent Claim
23 words
A prosthetic bearing element as claimed in any one of the proceeding claims in which the bearing liner is made from Corothane 80A.
Claim 9
Dependent Claim
20 words
A prosthetic bearing element as claimed in claims 1 to 8 which is in the form of an acetabular cup.
Claim 10
Dependent Claim
28 words
A prosthetic bearing element as claimed in any one of the preceding claims 1 to 8 in which two or more being liners are provided on said backing.
Claim 11
Dependent Claim
24 words
A prosthetic bearing element as claimed in claim 9 which is in the form of a bearing insert for use in a knee prosthesis
Claim 12
Dependent Claim
20 words
A prosthetic orthopaedic or maxillofacial implant incorporating a bearing element as set forth in any one of the preceding claims.
Claim 13
Dependent Claim
39 words
A process for making a prosthetic bearing element as claimed in claim 1 which includes a two stage moulding process in which the backing or liner is moulded first and the appropriate liner or backing is moulded onto it.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.