Combined patient interface and exhaust assembly
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Jul 1, 2003
Grant Date -
N/A
app pub date -
Apr 2, 2001
filing date -
Apr 6, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A combined patient interface and integrated exhaust assembly that passes a controlled flow of gas from an interior of a patient interface to ambient atmosphere at a predetermined flow rate irrespective of variations of pressure in the interior of the patient interface device relative to ambient atmosphere. Control of the flow of exhaust gas is achieved by varying the effective cross sectional area of the exhaust path communicating the interior of the patient interface with ambient atmosphere based on the pressure in the interior of the patient interface relative to ambient atmospheric pressure.
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