{HEAD ~ Evacuation} and collapse of {TAIL ~ the fluid bladders} 24, 26, or some other resilient feature of the end effector 14, causes the anvil 12 to open 
{ HEAD ~ Evacuation } and collapse of { TAIL ~ the fluid bladders } 24 , 26 , or some other resilient feature of the end effector 14 , causes the anvil 12 to open
HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH