Block copolymer elastomer catheter balloons

  • US 5,830,182 A
  • Filed: 02/25/1997
  • Issued: 11/03/1998
  • Est. Priority Date: 03/02/1994
  • Status: Expired due to Term
First Claim
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1. A balloon for a medical device formed from a length of tubing of a polymer material by radial expansion of the tubing under pressure, the polymer material comprising a block copolymer thermoplastic elastomer characterized as follows:

  • the block copolymer comprises two or more hard segments of a polyester or polyamide and two or more soft segments of polyether;

    the polyester hard segments are polyesters of an aromatic dicarboxylic acid and a C2 -C4 diol,the polyamide hard segments are polyamides of C6 or higher carboxylic acids and C6 or higher organic diamines or of C6 or higher aliphatic ω

    -amino-α

    -acids, andthe polyether soft segments are polyethers of C2 -C10 diols,the block copolymer has a flexural modulus of less than about 150,000 psi;

    the block copolymer has a hardness, Shore D scale, of greater than 60; and

    the percentage by weight of the block polymer attributable to the hard segments is between about 50% and about 95%.

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