A hydraulically actuated surgical instrument. The instrument may comprise a handle portion and a shaft. The shaft is mechanically coupled to the handle. The instrument may also include an end effector mechanically coupled to the shaft along its longitudinal axis. The end effector may comprise a surgical...http://www.google.de/patents/US7799039?utm_source=gb-gplus-sharePatent US7799039 - Surgical instrument having a hydraulically actuated end effector
