Dilatation catheter having a random copolymer balloon
AssigneeSciMed Life Systems, Inc.
InventorsLixiao Wang, Bruce H. Rau, David Sogard
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Abstract
The present invention provides a dilatation catheter which includes a balloon having at least one layer of a thermoplastic material consisting essentially of a random copolymer made from dimethyl terephthalate dimethyl isophthalate and ethylene glycol. These balloons are particular suited for use on dilatation catheters used for percutaneous transluminal coronary angioplasty.
Claims22
A dilation catheter comprising:
- a compliant balloon having at least one layer of a thermoplastic material comprising a random copolymer consisting essentially of random repeating units of ethylene terephthalate and ethylene isophthalate.
A dilatation catheter balloon comprising:
- at least one layer of a random copolymer of ethylene terephthalate and ethylene isophthalate having a wall thickness of between 0.0076-0.051 mm, a tensile strength less than 40,000 psi, an intrinsic viscosity less than 0.8 dl/g and a radial expansion of greater than 3% at 200 psi.
A dilation catheter balloon having at least one layer of a thermoplastic material comprising a random copolymer having random repeating units of ethylene terephthalate and ethylene isophthalate.
A method of making dilation catheter balloon comprising the steps of:
- a) providing tubing comprising a thermoplastic material comprising a random copolymer having random repeating units of ethylene terephthalate and ethylene isophthalate;
- and
- b) stretching and molding said tubing to form a dilation catheter balloon.
Dependencies are inferred from the claim text.