BALLOON CATHETER AND METHOD OF MAKING SAME

摘要

A balloon catheter includes a one-piece extrusion having inner and outer tubular walls, where the inner tubular wall defines a wire guide lumen, and a clearance extending between the inner and outer tubular walls forms an inflation lumen. A balloon is attached to the outer tubular wall and to the inner tubular wall, such that the inflation lumen is in fluid communication with the balloon and the wire guide lumen extends through the balloon. A method of making the balloon catheter is also disclosed.

主权项

1. A method of making a balloon catheter comprising the steps of:
holding a one-piece extrusion including an inner tubular wall, an outer tubular wall extending circumferentially around the inner tubular wall, and a longitudinally extending connecting wall attaching the inner and outer tubular walls; cutting circumferentially through the outer tubular wall and longitudinally through the connecting wall so as to detach a portion of the outer tubular wall from the one-piece extrusion; and attaching a proximal end of a balloon to the outer tubular wall and a distal end of the balloon to the inner tubular wall after detaching the portion, and such that a first lumen formed by both the inner and outer tubular walls is in fluid communication with the balloon for inflating the same, and a second lumen formed by the inner tubular wall extends longitudinally through the balloon for guiding the balloon catheter over a wire guide.