Balloon catheter with adjustable inner member

A balloon catheter for use in connection with a guidewire, comprising:

• a catheter shaft extending in a longitudinal direction and having a proximal end and a distal end, the catheter shaft including an inflation lumen and a guidewire lumen for receiving the guidewire;
• and an inflatable balloon including a distal end portion positioned along the catheter shaft, the balloon having at least one portion connected to the proximal or distal end of the catheter shaft by an actuator and adapted for moving toward the proximal or distal end thereof on inflation of the balloon to expand from a deflated condition while the distal end of the catheter shaft remains connected to the balloon;
• wherein the inflation lumen is ca able of delivering inflation fluid to inflate the balloon while the catheter shaft is sealed to the balloon;
• wherein the actuator corn rises a first portion attached to the balloon and a second portion attached directly to the catheter shaft within the balloon and movable independent of the first portion wherein the first or second portion includes a radial projection extending in a longitudinal direction and the other portion includes a recess extending in the longitudinal direction for receiving the radial projection.

A balloon catheter for use with a guidewire, comprising:

• a catheter shaft having a proximal end, a distal end, a guidewire lumen for receiving the guidewire, and an inflation lumen;
• an inflatable balloon extending along the catheter shaft from a proximal end portion of the balloon to a distal end portion of the balloon;
• and
• a connector having a first portion connected to the balloon and a second portion for receiving the catheter shaft, the first portion adapted for sliding along the second portion to allow the balloon distal end portion to move toward the proximal end of the catheter shaft on inflation of the balloon to expand to an inflated condition from a deflated condition while the distal end of the catheter shaft remains connected to the balloon and the first and second portions remain sealingly engaged so as to contain the inflation fluid within the balloon wherein one of the first or second portions includes a rail extending in a longitudinal direction and the other portion includes a channel extending in the longitudinal direction for receiving the rail, the rail and channel serving to limit rotational movement of the first and second portions of the connector.