The invention pertains to an angioplasty catheter for expanding and/or opening up morbidly constricted or obstructed blood vessels, comprising at least one rotor (3) that is rotatively mounted in a cylindrical housing (4) at the distal end of the catheter, is connected to a rotational actuator (2) and...http://www.google.ca/patents/US6007530?utm_source=gb-gplus-sharePatent US6007530 - Angioplasty catheter for expanding and/or opening up blood vessels
