Gas administration scavenging mask
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United States of America Patent
Stats
-
Feb 3, 1981
Grant Date -
N/A
app pub date -
Sep 22, 1978
filing date -
Sep 22, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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