A gas tubing reel device for use in conveying {TAIL ~ a supply} of gas through gas tubing connected to a gas source and through an air catheter to {HEAD ~ a person}, said gas tubing reel device comprising: 
A gas tubing reel device for use in conveying { TAIL ~ a supply } of gas through gas tubing connected to a gas source and through an air catheter to { HEAD ~ a person } , said gas tubing reel device comprising :
OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH