{HEAD ~ The lead} is provided with {TAIL ~ a V shaped bend} near its distal end, and carries a blood parameter sensor distal to the V shaped bend 
is provided with
{ HEAD ~ The lead } is provided with { TAIL ~ a V shaped bend } near its distal end , and carries a blood parameter sensor distal to the V shaped bend
HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH