Medical device for the closed-circuit administration of a gaseous mixture to a spontaneously breathing patient, and associated adjustment system

摘要

The invention relates to a medical device (1) for the closed-circuit administration of a gaseous mixture to be delivered to a spontaneously breathing patient, comprising a gas recycling system (4) disposed on a closed administration circuit (2). The recycling system (4) can comprise in particular an input for an exhaled gaseous mixture and an output for the gaseous mixture to be supplied to the patient, the orientation of which defines a direction of circulation (8) from the input to the output, as well as a zone (Z