The catheter carries an inflatable occlusion balloon capable of being formed into a funnel with {HEAD ~ the larger end} of {TAIL ~ the funnel} facing distally 
of
The catheter carries an inflatable occlusion balloon capable of being formed into a funnel with { HEAD ~ the larger end } of { TAIL ~ the funnel } facing distally
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH