Patent ID: 6523538
Filing Date: 2003-02-25
Classification: A61M

Abstract:
An improved breathing circuit for a subject, said breathing circuit comprising:an inspiration limb providing breathing gases for supply to the subject; an expiration limb receiving breathing gases containing water vapor from the subject; means for circulating breathing gases in the breathing circuit to supply breathing gases to the subject and to receive breathing gases from the subject; a CO2 absorber interposed in said breathing circuit for removing CO2 from the breathing gases provided in said inspiration limb to the subject; and dryer means in said breathing circuit, downstream of said CO2 absorber, for removing water vapor from the breathing gases provided in the inspiration limb to the subject to prevent moisture condensation, said dryer means having means for cooling breathing gases received from said CO2 absorber to remove water vapor therefrom, said dryer means having heat exchanger means for heating cooled breathing gases from which water vapor has been removed and which are provided in said inspiration limb to the subject.