Cushion for patient interface
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United States of America Patent
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Jul 17, 2012
Grant Date -
May 15, 2008
app pub date -
Jan 12, 2006
filing date -
Jan 12, 2005
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A cushion for a patient interface that delivers breathable gas to a patient includes a base wall structured to be connected to a frame, an underlying support cushion extending away from the base wall towards the patient's face in use, and a membrane provided to substantially cover at least a portion of the underlying cushion. The membrane is adapted to form a continuous seal on the patient's face. The underlying cushion has a spring-like connection with the base wall. The underlying cushion and/or base wall define a spring constant that varies along a length of the seal.
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