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Biostable elastomeric polymers having quaternary carbons

  • US 5,741,331 A
  • Filed: 07/29/1996
  • Issued: 04/21/1998
  • Est. Priority Date: 07/29/1996
  • Status: Expired due to Term
First Claim
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1. A non-biodegradable article of manufacture comprising:

  • crack-resistant implantable prosthesis or implant formed of a polyolefin copolymer;

    said polyolefin copolymer having a backbone in which the majority of polymer linkages along the copolymer chain are alternating quaternary and secondary carbon atoms;

    said polyolefin copolymer being a reaction product of a first rubbery component having a quaternary carbon atom which when homopolymerized produces a polymer having a low level of hardness, and a second hardening component which when homopolymerized produces a polymer having a high level of hardness;

    said polyolefin copolymer reaction product of said first and second components being elastomeric and having a hardness intermediate said low and high levels of hardness; and

    said copolymer is crack-resistant when in vivo implanted.

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