Method for operating an anesthesia apparatus, anesthesia apparatus operating according to the method and computer program for implementing the method

Abstract

A method and a control program for operating an anesthesia apparatus, as well as an anesthesia apparatus (), which operates according to the method are provided. The anesthesia apparatus includes a breathing gas feed unit () intended for displacing a breathing gas volume in a breathing circuit (). A piston () brings about the displacement of the breathing gas. Switching over between a first mode of operation and a second mode of operation during the return of the piston () allows for a presetting of a corresponding piston return velocity. The piston return velocity depends on a volume flow in an exhalation branch () of the breathing circuit () in the first mode of operation. The piston return velocity depends on a minimally necessary piston return velocity in the second mode of operation.