Atherectomy head and atherectomy catheter using the same

摘要

Provided is an atherectomy catheter, including a cylindrical catheter body (1), a freely rotatable drive wire (2) inserted into an inside (14) of the catheter body (1), and a head (3) for eliminating a thrombus, which is provided on a tip of the catheter body (1), in which the head (3) has an elastic member (6) formed of a material that is deformed by collision with the thrombus, and a tip surface of the elastic member is placed on substantially the same surface as a surface of a blade (4) for eliminating the thrombus, or protrudes forward from the surface of the blade. The tip surface of the elastic member (6) is dented backward from the surface of the blade (4) of a blade member (5) by collision with the thrombus, the blade (4) abuts on the thrombus present in a dent formed, and the thrombus is eliminated.