An intravascular catheter system for the treatment of occluded blood vessels that includes tissue displacement or hinged expansion members that are movable from a closed to an open position. An actuating assembly may be, provided for moving the tissue expansion members between an open and closed position...http://www.google.se/patents/US6508825?utm_source=gb-gplus-sharePatent US6508825 - Apparatus for treating vascular occlusions
