Exhaust Apparatus For Use in Administering Positive Pressure Therapy Through the Nose or Mouth
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United States of America Patent
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Issued Date -
Jun 19, 2008
app pub date -
Sep 9, 2007
filing date -
Sep 11, 2006
priority date (Note) -
Abandoned
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Abstract
We describe the use of a flow directing apparatus for incorporation into a patient mask or adjacent to it and for use with a source of pressurized breathable gas such as electronically or electronically controlled fan blower or positive displacement ventilator to provide nasal or oro-nasally administered continuous positive airway pressure or bi level therapies. Such therapies are commonly used to treat sleep disordered breathing including sleep apnea and other syndromes, as well as ventilatory insufficiency. The valve apparatus includes means to direct expired air to atmosphere and inspired air from a pressure source to a user's airway. In this way advantage is provided compared to alternative means as described in the prior art which vent a user's expired gas to atmosphere through a fixed open vent.
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