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