Ventilator adaptable for use with either a dual-limb circuit or a single-limb circuit
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United States of America Patent
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Nov 17, 2009
Grant Date -
Jun 28, 2007
app pub date -
Dec 5, 2006
filing date -
Dec 8, 2005
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A ventilator of the present invention includes a housing, a gas flow generator disposed in the housing, a gas outlet port provided on an exterior surface of the housing, and a first conduit coupling the gas flow generator to the gas outlet port. A gas inlet port is also provided on an exterior surface of the housing. A second conduit couples the gas inlet port to a first exhaust valve in the housing that regulates a flow of exhaust gas from the second conduit. A second exhaust valve in the housing is coupled to the first conduit and regulates a flow of exhaust gas from the first conduit. A controller coupled to second exhaust valve causes the second exhaust valve to change a degree of flow restriction based on a respiratory phase of a patient coupled to the ventilator when the ventilator is operating in a single-limb ventilation configuration.
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