{HEAD ~ The power assisted syringe} 1 or 2 wherein said valve housing assembly is connected internally to said {TAIL ~ plunger assembly} 
{ HEAD ~ The power assisted syringe } 1 or 2 wherein said valve housing assembly is connected internally to said { TAIL ~ plunger assembly }
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL