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