| 摘要 |
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. |
