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Method of device having biostable elastomeric polymers having quaternary carbons

  • US 6,197,240 B1
  • Filed: 05/10/1999
  • Issued: 03/06/2001
  • Est. Priority Date: 07/29/1996
  • Status: Expired due to Term
First Claim
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1. A method of making an endoluminal or vascular device for in vivo implant and which is formed of a polymer which is resistant to degradation and cracking when in vivo implanted, comprising the steps of:

  • applying the polymer when in fluid form on a surface;

    solidifying the polymer from its fluid form on the surface to form a non-woven membrane mat; and

    removing the non-woven membrane mat from the surface, wherein said polymer is 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; and

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

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