{TAIL ~ Needle} 14 remains in void space 15 until {HEAD ~ the sensor} 12 is removed from the patient and it and base unit 18 are disposed 
{ TAIL ~ Needle } 14 remains in void space 15 until { HEAD ~ the sensor } 12 is removed from the patient and it and base unit 18 are disposed
TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH