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