The physician then dilates the hole through the vessel wall by maneuvering {TAIL ~ the tapered end} 60 of the dilator 56, and introduces the entrance tube 35 into {HEAD ~ vessel lumen} 62 
The physician then dilates the hole through the vessel wall by maneuvering { TAIL ~ the tapered end } 60 of the dilator 56 , and introduces the entrance tube 35 into { HEAD ~ vessel lumen } 62
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH