Prosthetic device

• US 4,356,571 A
• Filed: 10/10/1980
• Issued: 11/02/1982
• Est. Priority Date: 10/12/1979
• Status: Expired due to Term

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Esper, Friedrich, Gohl, Walter
• Primary Examiner(s): Apley, Richard J.
• Assistant Examiner(s): Isabella, David J.
• Application Number:
  US06/195,870
• Time in Patent Office: 753 Days
• Field of Search: 3/1, 264/131, 525/937, 260/39 R
• US Class Current: 424/423
• CPC Class Codes: A61F 2/28 Bones joints A61F2/30
• CPC Class Codes: A61F 2/30767 Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
• CPC Class Codes: A61F 2/30965 Reinforcing the prosthesis by embedding particles or fibres during moulding or dipping
• CPC Class Codes: A61F 2002/30009 differing in fibre orientations
• CPC Class Codes: A61F 2250/0028 differing in fibre orientations
• CPC Class Codes: A61L 27/44 having a macromolecular matrix
• CPC Class Codes: A61L 27/443 with carbon fillers
• CPC Class Codes: C08L 61/26 of aldehydes with heterocyclic compounds

Abstract

A medical prostheses suitable for implant use comprising a cured fiber reinforced triazine resin shaped body. The fiber reinforcement is preferably a fabric formed from two dimensionally oriented fibers. The preferred fibers are high strength carbon fibers. The prosthesis is particularly useful for the fabrication of joints, for example hip joints, as well as for support and connecting elements suitable for implantation.

Claims

1. Medical prosthesis suitable for implant use comprising a cured fiber reinforced resin body, said body having a substrate portion and a surface portion and at least said surface portion comprises a triazine resin;

said triazine resin being a set liquid triazine thermosetting resin of addition polymerization type having the functional group Ar--O--C.tbd.N)_n which has been set by heating to form the triazine ring ##STR2##

2. The prosthesis of claim 1 wherein said fibers are carbon fibers.

3. The prosthesis of claim 1 or 2 wherein said fibers are formed into a fabric which is used to reinforce said resin.

4. The prosthesis of claim 1 or 2 wherein said resin is reinforced by a combination of fabric material and fibers in the form of strands.

5. The prosthesis of claim 3 wherein the fibers forming the fabric material are in a two dimensional orientation.

6. The prosthesis of claim 4 wherein the fibers forming the fabric material are in a two dimensional orientation.

7. The prosthesis of claim 6 having a bending strength in excess of 600 N/mm² and an modulus of elasticity of between 50,000 and 100,000 N/mm².

8. The prosthesis of claim 5 having a bending strength in excess of 600 N/mm² and an modulus of elasticity of between 50,000 and 100,000 N/mm².

9. The prosthesis of claim 1 wherein said triazine resin comprises substantially all of the resin component of said cured fiber reinforced resin body.