The tubular section between the two expanded head may resiliently expand, and may also be balloon expanded or otherwise plastically deformed to enlarge the flow through {HEAD ~ lumen} of {TAIL ~ the tubular section} 
of
The tubular section between the two expanded head may resiliently expand , and may also be balloon expanded or otherwise plastically deformed to enlarge the flow through { HEAD ~ lumen } of { TAIL ~ the tubular section }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL