A medical assembly 27 wherein the slit valve means comprise {TAIL ~ yieldable diaphragm means} in which {HEAD ~ at least one slit} is centrally disposed and flexed by pressure differential, and physical means adjacent to the diaphragm means constraining flexure of the diaphragm means to control the pressure differentials required to open the slit in either direction 
A medical assembly 27 wherein the slit valve means comprise { TAIL ~ yieldable diaphragm means } in which { HEAD ~ at least one slit } is centrally disposed and flexed by pressure differential , and physical means adjacent to the diaphragm means constraining flexure of the diaphragm means to control the pressure differentials required to open the slit in either direction
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL REL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH