Patent ID: 8353296

Claim:
A nasal cannula fitting, comprising in combination, a) a rigid plastic tubular first duct configured to directly endwise connect with a ventilator circuit providing respiratory assistance air, b) a relatively flexible plastic second duct fitting onto an end portion of said first duct, c) relatively flexible third plastic ducts integral with the second duct and diverging endwise therefrom with Y configuration to receive flow of said assistance air, the first and second ducts overlapping whereby the second duct terminates proximate flow entrance ends of the third ducts, d) and nasal cannula plastic tubing connected in series with and penetrating the respective third ducts to extend therefrom, e) there being an inflexible radially extending flange on and integral with the first duct, the entirety of the second duct located at one side of the flange, and between and closely proximate both the flange and said Y configuration of the third plastic ducts, and wherein the flexible second duct is in circumferentially clasping relation with rigid extent of the first duct, f) and wherein the third ducts have bore diameters d 3 which are substantially less than the bore diameter of said first duct.