Patent ID: 8652098

Claim:
A catheter body for insertion through a body lumen, comprising: an inner tubular member and an outer tubular member, at least a portion of the outer tubular member extending co-axially around the inner tubular member forming a space therebetween to create an inflation lumen, the inner tubular member having a guide wire lumen extending therethrough; wherein the inner tubular member includes a first layer, a second layer and a radiopaque coil inserted between the first and second layers; and an inflatable balloon attached to the outer tubular member which is in fluid communication with the inflation lumen, wherein the inflatable balloon has a working section in which a length of the balloon has substantially the same diameter when the balloon is inflated and the radiopaque coil is disposed on the inner tubular member and the ends of the radiopaque coil terminate near the ends of the working section of the inflatable balloon to mark the location of the working section of the inflatable balloon.