Patent ID: 7942849

Claim:
A catheter comprising: an outer tubular member having an inner surface defining a lumen extending between a proximal end and a distal end of the outer tubular member; an inner tubular member having a proximal end, a distal end and a lumen extending therethrough, the inner tubular member including a plurality of superposed continuous co-extruded layers including an inner layer and an outer layer, the inner layer being congruent in length with the outer layer of the inner tubular member, the inner layer formed of a first material defining an inner surface of the inner tubular member and the outer layer formed of a second material defining an outer surface of the inner tubular member, the first material being different from the second material; and an inflatable balloon formed of a third material which is readily weldable to the second material of the outer layer of the inner tubular member, a proximal portion of the inflatable balloon welded to the distal end of the outer tubular member, and a distal portion of the inflatable balloon welded to the distal end of the inner tubular member; wherein the first material of inner layer of the inner tubular member has a first coefficient of friction and the second material of the outer layer of the inner tubular member has a second coefficient of friction greater than the first coefficient of friction of the first material of the inner layer of the inner tubular member.