System and {HEAD ~ method} to determine the location and orientation of {TAIL ~ an indwelling medical device} 
System and { HEAD ~ method } to determine the location and orientation of { TAIL ~ an indwelling medical device }
OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL