Patent ID: 6585688
Filing Date: 2003-07-01
Classification: A61L,A61M,Y10T

Abstract:
A medical catheter having thereon a balloon, the balloon comprising a structural layer of a PEN polymer material, the PEN polymer material beinga) a polyethylene naphthalate homopolymer or b) a crystallizable copolyester comprising residues of i) ethylene glycol, ii) naphthalene dicarboxylic acid and iii) at least one PA residue, said PA residue being a member of the group consisting of residues of terephthalic acid and isophthalic acid, the naphthalene dicarboxylic acid residues comprising about 5% or more of the sum of naphthalene dicarboxylic acid residues and PA residues in the copolyester, and, the balloon characterized by an ability to withstand a hoop stress of at least 50,000 psi without bursting.