{TAIL ~ a rotor} cooperating with {HEAD ~ said stator} to pump blood axially through said pump 
{ TAIL ~ a rotor } cooperating with { HEAD ~ said stator } to pump blood axially through said pump
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH