As shown in FIG 6, {TAIL ~ the present invention} is also related to {HEAD ~ an apparatus} 50 for restricting fluid flow 
As shown in FIG 6 , { TAIL ~ the present invention } is also related to { HEAD ~ an apparatus } 50 for restricting fluid flow
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH