Variable aperture venting for respiratory mask
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Nov 11, 2003
Grant Date -
Jan 2, 2003
app pub date -
Oct 12, 1999
filing date -
Oct 12, 1999
priority date (Note) -
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status (Latency Note)
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Abstract
A respiratory mask having a variable flow venting is provided according to the invention, including a gas supply hose, a mask shell adapted to output a gas to a respiratory system of a person, the mask shell adapted to be connected to the gas supply hose, and an exhaust gas flow volume regulating device which maintains a substantially constant gas flow volume out of the respiratory mask independent of an internal gas pressure inside the respiratory mask.
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