Patent ID: 6849062

Claim:
A balloon catheter for insertion into a body lumen, comprising: a catheter shaft having a proximal end and a distal end and an exterior surface and an interior surface and a body portion between said interior and exterior surfaces, said catheter shaft including, a plurality of nodes formed in said body portion of said catheter shaft and extending from said interior surface, each of said nodes having a crown portion that defines a guidewire track, at least one of said nodes having an inflation lumen extending therethrough, substantially parallel to said guidewire track wherein said nodes form a non-circular guidewire lumen therebetween; and a balloon disposed at said distal end of said catheter shaft, wherein said inflation lumen is in fluid communication with an interior of said balloon, wherein said catheter shaft is comprised of a first material and each of said crown portions is comprised of a second material that is different than said first material.