Exhalation scavenging therapy mask
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United States of America Patent
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Oct 10, 2017
Grant Date -
Sep 11, 2014
app pub date -
Mar 7, 2014
filing date -
Mar 8, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
A respiratory mask for a medical patient including a shell and a flow coupling is disclosed. The shell includes an upper portion configured to cover a nose of the patient and a lower portion configured to cover a mouth of the patient, where an internal surface of the shell defines an interior volume of the respiratory mask. The flow coupling includes a body, a supply flow passage extending through the flow coupling, a scavenging flow passage extending through the flow coupling, and a septum within the body that separates the supply flow passage from the scavenging flow passage. The supply flow passage and the scavenging flow passage are fluidly coupled to an aperture that extends through the upper portion of the shell, and an aperture extending through the lower portion of the shell, respectively.
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