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