A surgical instrument including a handle portion, a body portion, a movable handle, a tool assembly, a drive beam and a closure apparatus is disclosed. At least one of the closure apparatus and a contact surface of the tool assembly include a plastic surface. The body portion extends distally from the...http://www.google.de/patents/US7845535?utm_source=gb-gplus-sharePatent US7845535 - Surgical instrument having a plastic surface
