EP0551574B1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Composite implant with metallic braid
Assignee: Bristol Myers Squibb Co
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Filing: 1992-10-16
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Granted: 1996-09-25
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Expires: 2012-10-16
Abstract
No abstract record available.
Inventors
- 👤 Helen S. Chu
- 👤 Thirumalai N.C. Devanathan
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 23:55
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/04; B29C70/06; B29C70/08; A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/3094; A61F2/30965; A61F2/32; A61F2/36; A61F2/3662; A61L; A61L27/00; A61L27/28; A61L27/34; A61L27/40; A61L27/44; A61L27/443; A61L31/00; A61L31/08; A61L31/10; B29C65/00; B29C65/02; B29C65/34; B29C65/36; B29C65/3604; B29C65/3636; B29C65/3672; B29C65/3676; B29C65/368; B29C65/3684; B29C65/3696; B29C70/10; B29C70/16; B29C70/22; B29C70/222; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/80; A61F2/30767; A61F2/38; A61F2002/30001; A61F2002/30003; A61F2002/3006; A61F2002/3008; A61F2250/00; A61F2250/0058; A61F2250/0096; A61F2250/0098; A61L2430/00; A61L2430/02; A61L2430/24; B29K; B29K2101/00; B29K2101/12; B29K2305/00; B29K2307/00; B29K2309/00; B29K2309/08; B29L; B29L2031/00; B29L2031/753; B29L2031/7532
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
51 words
A bone implant(1), comprising; a first non-metallic layer (2); a second non-metallic layer (4); and a fibre inner layer (3) disposed between the first (2) and second layers (4), the inner layer (3) and the second layer (4)being securely joined characterised in that the fibres of the inner layer are metallic.
Claim 2
Dependent Claim
29 words
A bone implant (1) as claimed in claim 1 characterised in that a bond is formed between two of the layers (2,3,4) by inductively heating the inner layer (3).
Claim 3
Dependent Claim
29 words
A bone implant (1) as claimed in any preceding claim characterised in that the metallic fibre inner layer (3) comprises a braided sheath surrounding the first non-metallic layer (2).
Claim 4
Dependent Claim
21 words
A bone implant (1) as claimed in any preceding claim characterised in that the first non-metallic layer (2) comprises a thermoplastic.
Claim 5
Dependent Claim
23 words
A bone implant (1) as claimed in claim 4 characterised in that the thermoplastic includes a member of the polyaryletherketone family of polymers.
Claim 6
Dependent Claim
21 words
A bone implant (1) as claimed in any preceding claim characterised in that the first non-metallic layer (2) further comprises fibres.
Claim 7
Dependent Claim
21 words
A bone implant (1) as claimed in any preceding claim characterised in that the first non-metallic layer (2) includes carbon fibres.
Claim 8
Dependent Claim
72 words
A bone implant (1) as claimed in any preceding claim characterised in that the bone implant (1) is a femoral hip prosthesis and in that the first non-metallic layer (2) is a core layer, the second non-metallic layer (4) is a skin layer, the inner layer (3) is a metallic fiber sheath layer (3) over the core (2) and the skin layer (4) is formed over the core (2) and sheath (3).
Claim 9
Dependent Claim
32 words
A bone implant (1) as claimed in claim 8 characterised in that a bond is formed between two layers (2,3,4) of the femoral hip (1) by inductively heating the inner layer (3).
Claim 10
Dependent Claim
29 words
A bone implant (1) as claimed in claim 8 or claim 9 characterised in that the metallic fiber sheath (3) is braided and surrounds the non-metallic core layer (2).
Claim 11
Dependent Claim
22 words
A bone implant (1) as claimed in claims 8 to 10 characterised in that the core (2) comprises a thermoplastic and fibres.
Claim 12
Dependent Claim
31 words
A bone implant (1) as claimed in claims 8 to 11 characterised in that the core (2) includes a member of the polyaryletherketone family of thermoplastics and the fibres includes carbon.
Claim 13
Dependent Claim
26 words
A bone implant (1) as claimed in claims 8 to 12 characterised in that the skin (4) includes a member of the polyaryletherketone family of thermoplastics.
Claim 14
Dependent Claim
94 words
A bone implant (1) as claimed in any preceding claim characterised in that the bone implant (1) is a femoral hip stem (1) comprising as the first layer a core (2) including carbon fibers impregnated with a thermoplastic polymer, as the second layer a skin layer (4) including a thermoplastic polymer and as said inner layer a braided metallic fiber sheath (3) enclosing the core (2), the skin layer (4) being formed over the core (2) and sheath (3) such that none of the fibres of the core (2) or sheath (3) are exposed.
References Cited (Backward Citations)
No citation records indexed.
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