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