Method of Making a Medical Balloon

摘要

A medical balloon (24,30)for a balloon catheter (10)is described. The balloon(30)has at least a first layer (40)made from a first material and a second layer (42)made from a second material, said first (40)and second (42)layers being in overlying relationship with one another and being integral with one another; wherein the first layer (40)has a softening or melting temperature which is higher than a softening or melting temperature of the second layer (42). A method of forming the medical balloon (30)is also described, including locating a raw tubing(131)in a mould(112); preheating and inflating the raw tubing (131)so as to cause it to stretch; heating the raw tubing (131)to soften or melt the second layer(42); setting the inflated raw tubing (131)to form the medical balloon(30); and cooling the set balloon(30).