Patent ID: 8257304

Claim:
A balloon catheter comprising: an independent extension tube; a monolithically formed multi-lumen tube comprising an inflation lumen and a guide wire lumen, the multi-lumen tube having a proximal end segment and a distal end segment, the extension tube coupled to the distal end segment of the multi-lumen tube and extending distally therefrom, the distal end segment of the multi-lumen tube having a flared segment extending to, and coterminous with, a distal-most end face of the multi-lumen tube, the flared segment configured and dimensioned to receive the extension tube and direct the extension tube into the guidewire lumen to thereby facilitate positioning and securement of the extension tube to the multi-lumen tube; and a dilatation balloon disposed about the multi-lumen tube and the extension tube thereby defining a balloon-containing portion, the distal end of the multi-lumen tube being under the balloon; at least one of the multi-lumen tube and the extension tube comprising a polyamide material to minimize the tendency of the balloon-containing portion from undesirable bending.