Polymer blends for medical balloons
First Claim
1. A dilatation balloon comprising about 65-95 wt % polyamide blended with a second polymer selected from the group consisting of a polyurethane, a rubber and an ionomer, wherein said balloon has hoop strength of about 20,000-40,000 p.s.i.
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Accused Products
Abstract
A dilatation balloon is disclosed comprising about 65-95 wt % polyamide blended with a second polymer selected from the group consisting of a polyurethane, a rubber and an ionomer, wherein the balloon has hoop strength of about 20,000-40,000 p.s.i. Also disclosed, is a process for forming the dilatation balloon. The process includes contacting the polyamide polymer with a composition comprising a second polymer to form a polymer blend, extruding the polymer blend to form a polymer extrudate, and forming the balloon from the extrudate in a balloon forming machine.
35 Citations
20 Claims
- 1. A dilatation balloon comprising about 65-95 wt % polyamide blended with a second polymer selected from the group consisting of a polyurethane, a rubber and an ionomer, wherein said balloon has hoop strength of about 20,000-40,000 p.s.i.
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19. A process for forming a dilatation balloon, comprising:
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contacting a polyamide with a composition comprising a second polymer to form a polymer blend;
extruding said polymer blend to form a polymer blend extrudate; and
forming said balloon from said extrudate in a balloon forming machine, wherein said balloon comprises about 65-95 wt % polyamide, said second polymer is a polyurethane, a rubber or an ionomer, and said balloon has hoop strength of about 20,000-40,000 p.s.i.
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20. A dilatation balloon comprising about 80-90% nylon 12 blended with a second polymer selected from the group consisting of semicrystalline EPDM and poly(ethylene-co-methacrylic acid) partially neutralized with a zinc salt, wherein said balloon has hoop strength of about 20,000-40,000 p.s.i.
Specification