{HEAD ~ a catheter} configured for intravascular placement within {TAIL ~ a renal blood vessel} of a human patient 
{ HEAD ~ a catheter } configured for intravascular placement within { TAIL ~ a renal blood vessel } of a human patient
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH