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