Surgery – Respiratory method or device – Means for mixing treating agent with respiratory gas
Patent
1997-05-28
1999-10-19
Lewis, Aaron J.
Surgery
Respiratory method or device
Means for mixing treating agent with respiratory gas
12820314, 12820325, A61M 1500
Patent
active
059671416
ABSTRACT:
The invention relates to a method and apparatus for metering to a patient an anaesthetic vaporized from anaesthetic liquid held in a liquid space (27) of a liquid container (18) into a gas space (28). The anaesthetic dose contained in a gas flow supplied to a patient is determined and the dose is adjusted in a manner that the dosage of anaesthetic in a gas intended to be respired by a patient matches a desired dosage and the dosage adjustment of anaesthetic contained in a gas supplied to a patient is effected automatically whenever the current dosage differs from a desired value.
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Instrumentarium Corporation
Lewis Aaron J.
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