Method and apparatus for metering an anaesthetic to a patient

Details Method and apparatus for metering an anaesthetic to a patient Method and apparatus for metering an anaesthetic to a patient

1995-12-19

1997-07-22

Lewis, Aaron J.

Surgery

Respiratory method or device

Means for mixing treating agent with respiratory gas

12820325, 12820414, 12820422, A61M 1500

Patent

active

056495315

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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