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