Coaxial pta balloon

A - Human Necessities – 61 – M

Patent

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Details

A61M 29/00 (2006.01) A61M 31/00 (2006.01)

Patent

CA 2646404

Described herein are low-profile balloon catheters (including PTA balloon catheters), catheter assemblies, and methods of using these catheters. The balloon catheters may include an inflatable member forming an inflatable region at the distal end of the balloon catheter, the inflatable member having a first end fixed to the distal end of the catheter body and a second end coupled to a movable member that is slidably disposed about the catheter body. The movable member is arranged to move toward the distal end of the catheter body upon inflation of the inflatable member. The inflatable region may therefore be held coaxially against the balloon catheter body when the balloon is un-inflated, reducing the overall diameter of the catheter without detrimentally affecting the expansion properties of the balloon.

L'invention concerne des cathéters à ballon de profil bas (y compris des cathéters à ballon pour ATP), des assemblages de cathéters et des méthodes pour utiliser lesdits cathéters. Lesdits cathéters à ballon peuvent inclure un membre gonflable qui forme une région gonflable à l'extrémité distale du cathéter à ballon, le membre gonflable ayant une première extrémité attachée à l'extrémité distale du corps du cathéter et une deuxième extrémité couplée à un membre mobile disposé de manière coulissante autour du corps du cathéter. Le membre mobile est disposé pour se déplacer vers l'extrémité distale du corps du cathéter lors du gonflement du membre gonflable. Par conséquent, la région gonflable peut être maintenue coaxialement contre le corps du cathéter à ballon lorsque le ballon est dégonflé, réduisant le diamètre total du cathéter sans affecter préjudiciablement les propriétés d'expansion du ballon.

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