A surgical including a handle assembly, an elongated portion, an end effector, and a stop member is disclosed. The elongated portion extends distally from the handle assembly. The end effector is disposed adjacent a distal portion of the elongated portion and includes a first jaw member and a second...http://www.google.es/patents/US7896214?utm_source=gb-gplus-sharePatente US7896214 - Tissue stop for surgical instrument
