Balloons for medical devices, particularly balloon angioplasty catheters, are made from particular block copolymer thermoplastic elastomers in which the block copolymer is made up of hard segments of a polyester or polyamide and soft segments of polyether; the polyester hard segments are polyesters of...http://www.google.com.au/patents/US5951941?utm_source=gb-gplus-sharePatent US5951941 - Block copolymer elastomer catheter balloons
