Patent ID: 8414632

Claim:
A catheter tip comprising at least one section of electroactive polymer, the at least one section of electroactive polymer having a non-actuated state and an actuated state, the catheter tip defining a guide wire lumen, the guide wire lumen having a first diameter and a second diameter, the guide wire lumen having the first diameter when the at least one section of electroactive polymer is in the non-actuated state and the guide wire lumen having the second diameter when the at least one section of electroactive polymer is in the actuated state, the first diameter being greater than the second diameter, the at least one section of electroactive polymer comprising a first section and a second section, the first section expanding into the guide wire lumen a first distance when the first section is in the actuated state, the second section expanding into the guide wire lumen a second distance when the second section is in the actuated state, the first distance being greater than the second distance, wherein the first diameter of the guide wire lumen is the same for the first and second sections of electroactive polymer and the second diameter of the guide wire lumen when the first section of electroactive polymer is in the actuated state is less than the second diameter of the guide wire lumen when the second section of electroactive polymer is in the actuated state.