Inhalation apparatus
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United States of America Patent
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May 17, 1994
Issued Date -
N/A
app pub date -
May 4, 1992
filing date -
Nov 14, 1988
priority date (Note) -
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Abstract
A face mask includes a cup-shaped body for enclosing an external respiratory organ, such as the nose, of a patient. Flow of a respirable gas into the body and exhaust of expired gas from the body are unidirectional controlled by respiration check valves. A plurality of detachably securable and interchangeable accessory devices adapt the mask for use with selected prior art scavenging devices.
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