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

Abstract

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 (Z1) for treating the exhaled gaseous mixture (5) capable of retaining carbon dioxide, as well as at least one zone (Z3) for adjusting the composition of the gaseous mixture, in which zone the concentration of each gas forming the gaseous mixture is adjusted to a setpoint value.

Dependencies are inferred from the claim text.