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Polyisobutylene urethane, urea and urethane/urea copolymers and medical devices containing the same

  • US 8,501,831 B2
  • Filed: 09/14/2012
  • Issued: 08/06/2013
  • Est. Priority Date: 06/27/2008
  • Status: Active Grant
First Claim
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1. A method for making an implantable or insertable medical device including a polyisobutylene urethane, urea or urethane/urea copolymer, the method comprising:

  • reacting a diisocyanate, a polyisobutylene polyol or polyamine and a polyether diol to form a polyisobutylene urethane, urea or urethane/urea copolymer; and

    forming at least a portion of an implantable or insertable medical device from the polyisobutylene urethane, urea or urethane/urea copolymer,wherein the molar amount of the polyisobutylene reacted with the polyether diol is greater than or equal to the molar amount of polyether diol.

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