A swivel housing is coupled to the tubing reel in {HEAD ~ a bearing relationship} and includes an inlet port for receiving an end of the tubing and an outlet port for coupling to {TAIL ~ a nasal cannula} 
A swivel housing is coupled to the tubing reel in { HEAD ~ a bearing relationship } and includes an inlet port for receiving an end of the tubing and an outlet port for coupling to { TAIL ~ a nasal cannula }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL