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