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