Patent ID: 8025943

Claim:
A dilatation balloon for use in a medical catheter device, the dilatation balloon comprising: a self-supporting structural layer having an inner surface and an outer surface and having a thickness of about 5.08 microns to about 38.1 microns thick, the structural layer comprising a non-compliant structural polymer material; and at least one thermoplastic elastomer layer disposed on said outer surface of said self-supporting structural layer, the at least one thermoplastic elastomer layer having a thickness of about 5.08 microns to about 12.7 microns, the thermoplastic elastomer layer comprising about 90% to about 99% by weight of at least one randomized block copolymer having polyester crystalline hard segments and amorphous glycol soft segments and about 1% to about 10% by weight of a non-compliant structural polymer.