Extension tubes for balloon catheters

摘要

A balloon catheter may include a multi-lumen tube having an inflation lumen and a guide wire lumen. The multi-lumen tube may include a proximal end and a distal end and may terminate at a distal tip. The catheter may include an extension tube extending distally from the distal tip of the multi-lumen tube and a dilatation balloon disposed about the multi-lumen tube and the extension tube. The distal tip of the multi-lumen tube may be under the balloon.

主权项

1. A balloon catheter comprising:
a multi-lumen tube defining an inflation lumen and a guide wire lumen, the guide wire lumen and the inflation lumen being co-terminus, the multi-lumen tube having a proximal end and a distal end, the distal end defining a flared portion terminating at a distal most flared tip; an extension tube received within the distal most flared tip and secured to the distal end of the multi-lumen tube at a proximal region of the extension tube; and a dilatation balloon disposed about the multi-lumen tube and the extension tube, the distal end of the multi-lumen tube being under the balloon.