The wire frame structure may be compressed into {HEAD ~ a small diameter configuration} to fit within {TAIL ~ the distal tip} of a delivery catheter 
The wire frame structure may be compressed into { HEAD ~ a small diameter configuration } to fit within { TAIL ~ the distal tip } of a delivery catheter
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH