Gas administration scavenging mask

Details Gas administration scavenging mask Gas administration scavenging mask

1978-09-22

1981-02-03

Recla, Henry J.

Surgery

Respiratory method or device

Means for supplying respiratory gas under positive pressure

12820718, 128910, A61M 1508

Patent

active

042482186

ABSTRACT:
A scavenging mask apparatus for administering gas to a patient, the apparatus comprising a nasal cannula for delivering gas to the patient's nostrils, a tube connecting the cannula to a source of gas, a nosepiece adapted to fit over the nose and cannula, and a tube connecting the nosepiece to a source of vacuum. Gas exhaled through the patient's nostrils or escaping from the cannula is scavenged by the air flow in the nosepiece, thereby minimizing loss of gas to the environment. The nosepiece is also provided with a plurality of holes in the underside thereof to scavenge gas exhaled through the patient's mouth.

REFERENCES:
patent: 1896716 (1933-02-01), McKesson
patent: 2663297 (1953-12-01), Turnberg
patent: 4015598 (1977-04-01), Brown
patent: 4151843 (1979-05-01), Brekke et al.
patent: 4156426 (1979-05-01), Gold

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