Medical breathing apparatus

Details Medical breathing apparatus Medical breathing apparatus

A - Human Necessities

61

M

137/1.52

A61M 16/00 (2006.01)

Patent

CA 1289037

ABSTRACT OF THE DISCLOSURE Medical Breathing Apparatus The apparatus incorporates a temperature control arrange- ment by which air drawn through the apparatus is supplied in a heated, moist condition at or close to a critical temperature of 43°C. The apparatus comprises a water chamber 6, heating means 11 for the water, means (preferably a fan 4) for drawing air over the water to an outlet 8, a face mask 15 for the outlet, and a temperature sensor 13 within the outlet adapted to control either the heating means and hence the water tempera- ture, or the speed at which the air is drawn over the water, or both, to maintain the air at or close to a required elevated temperature. Preferably, the apparatus is designed to deliver air to the face mask 15 in a volume substantially greater than that required for breathing, and the face mask covers the nose and mouth of the user and is formed with vents 23 through which excess air together with air exhaled by the user can pass to atmosphere.

553465

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