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Medical devices including polyisobutylene based polymers and derivatives thereof

  • US 8,644,952 B2
  • Filed: 09/02/2010
  • Issued: 02/04/2014
  • Est. Priority Date: 09/02/2009
  • Status: Active Grant
First Claim
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1. An implantable medical lead comprising:

  • an elongated lead body comprising a lumen, at least one conductor disposed within the lumen and at least one electrode operatively coupled to the conductor and disposed along the lead body, wherein the lead body has a Shore hardness from about 30A to about 75D and comprises a polyisobutylene urethane, urea or urethane/urea copolymer comprising soft polymer segments and hard polymer segments;

    wherein the soft polymer segments comprise a polyisobutylene segment and at least one additional polymer segment comprising a residue of;

    a polyether diol, a fluorinated polyether diol, a fluoropolymer diol, a polyester diol, a polyacrylate diol, a polymethacrylate diol, a polysiloxane diol, a fluorinated polysiloxane diol, or a polycarbonate diol; and

    wherein a weight ratio of soft segments to hard segments in the copolymer ranges from 50;

    50 to 90;

    10.

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