Method and arrangement for vaporizing an anaesthetic
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United States of America Patent
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Nov 10, 1998
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N/A
app pub date -
Jan 22, 1996
filing date -
Jan 23, 1995
priority date (Note) -
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Abstract
A method and an arrangement in connection with vaporizing an anaesthetic, in which an anaesthetic, vaporized in a vaporizer is mixed with fresh gas and delivered to be inhaled by a patient. In order to achieve a reliable operation, the prevailing ambient air pressure is measured, the measured air pressure is compared with a reference pressure and when the prevailing ambient air pressure deviates from the reference pressure, the anaesthetic agent concentration of the fresh gas/anaesthetic mixture to be passed to the patient is adjusted in relation to the variation in the ambient external air pressure.
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