The valve body includes {HEAD ~ an opening} in {TAIL ~ one side} thereof which forms a seal around a catheter enclosed within the cannula 
in
The valve body includes { HEAD ~ an opening } in { TAIL ~ one side } thereof which forms a seal around a catheter enclosed within the cannula
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH