Catheter balloon formed of ePTFE and a diene polymer

Details Catheter balloon formed of ePTFE and a diene polymer Catheter balloon formed of ePTFE and a diene polymer

2005-09-20

2005-09-20

Pyon, Harold (Department: 1772)

Stock material or miscellaneous articles

Hollow or container type article

Nonself-supporting tubular film or bag

C428S034100, C428S035700, C428S036500, C428S036800, C428S036900, C428S036910, C604S096010, C604S103050, C604S103060, C604S103080, C604S103110, C604S103130, C604S264000, C604S523000

Reexamination Certificate

active

06946173

ABSTRACT:
A catheter balloon formed of a polymeric material such as expanded polytetrafluoroethylene (ePTFE) bonded to a second layer formed of a low tensile set polymer and/or impregnated with a low tensile set polymer. In a presently preferred embodiment, the low tensile set polymer is a silicone-polyurethane copolymer elastomer or a diene polymer elastomer. The low tensile set polymer has high strength, low modulus, high elongation, and low tensile set. The diene or silicone-polyurethane has a low tensile set, which facilitates deflation of the balloon to a low profile deflated configuration. One aspect of the invention provides improved attachment of the diene to the ePTFE. In one embodiment, the second layer is formed of a diene mixed with a bonding promoter such as a vulcanizing agent which is covalently bonded to the diene.

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