Non-rebreathing oxygen mask

Details Non-rebreathing oxygen mask Non-rebreathing oxygen mask

1994-08-22

1996-02-20

Burr, Edgar S.

Surgery

Respiratory method or device

Means for supplying respiratory gas under positive pressure

12820517, 12820525, A62B 3700

Patent

active

054921147

ABSTRACT:
A non-rebreathing oxygen mask for supplying a continuous flow of oxygen to a patient. The non-rebreathing oxygen mask includes a face mask portion for enclosing the mouth and nose of a patient, an oxygen reserve bag for receiving a supply of oxygen from an external source, and an intermediate oxygen entry port for regulating the flow of oxygen into the oxygen reserve bag from an external source, and between the oxygen reserve bag and the face mask portion. A spring member, having a first end portion secured to a distal end of the oxygen entry port and a second end freely extending through the neck of the oxygen reserve bag into the interior thereof, is utilized to maintain an unobstructed airflow passageway through the neck area of the oxygen reserve bag.

REFERENCES:
patent: 3196866 (1965-06-01), Adams
patent: 4000341 (1976-12-01), Matson
patent: 4440163 (1984-04-01), Spergel
patent: 4737153 (1988-04-01), Shimamura et al.
patent: 5036890 (1991-08-01), Whaley
patent: 5121746 (1992-06-01), Sikora

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