Polymer blends for medical balloons
AssigneeMedtronic Vascular, Inc.
InventorsRaymond Godaire, Susheel Deshmukh
Life of this patent
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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.
Claims20
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.
A process for forming a dilatation balloon, comprising:
- 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.
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.
Dependencies are inferred from the claim text.