Method and device for reduction of rebreathing of gas from dead space
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United States of America Patent
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Mar 28, 1995
Grant Date -
N/A
app pub date -
Dec 10, 1992
filing date -
Jun 18, 1990
priority date (Note) -
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Abstract
In a method and apparatus for reducing rebreathing of gas from the dead space (i.e., the volume of used gas, which during expiration has filled the airways and is brought back to the alveus at the following inspiration), at least during the final phase of expiration, a flow of used breathing gas is artificially evacuated from the patient through a gas conduit inserted into the patient's airway, the flow rate of evacuated gas being greater than the flow rate of the expiration gas which is being exhaled by the patient at the time. A flow of breathable gas is simultaneously supplied to the patient through gas conduit inserted in the airway, which may be the same conduit as is used for evacuation or a different conduit.
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