The clip has a latch disposed at the distal end of the leg members to hold the clip in a closed position. The distal end of one of the leg members includes a sharp pointed member directed towards the other of said leg members to penetrate tissue adjacent the vessel to be closed when the clip is clos...http://www.google.fr/patents/US4579118?utm_source=gb-gplus-shareBrevet US4579118 - Hemostatic clip with penetration means
