Patent ID: 8627817
Filing Date: 2014-01-14
Classification: A61M

Abstract:
1. An anesthesia device comprising: a breathing circuit including an inspiratory breathing gas duct and an expiratory breathing gas duct receiving an expired breathing gas; a closable patient connection for connecting to the inspiratory breathing gas duct and expiratory breathing gas duct, the closable patient connection including a sealing cone for closing a patient connection patient end to provide a closed patient connection state in which the inspiratory breathing gas duct and the expiratory breathing gas duct of the breathing circuit remain connected and the breathing circuit is disconnected from the patient connection patient end or an automatic closing device to provide the closed patient connection state; a breathing gas supply system introducing breathing gas into the breathing circuit; a breathing gas outlet duct with a breathing gas outlet valve having a closed state and an open state, the breathing gas outlet duct being connected to the expiratory breathing gas duct and removing gas from the breathing circuit with the breathing gas outlet valve in the open state; a breathing gas reservoir for intermediately storing breathing gas, a PEEP valve arranged in the breathing circuit upstream of the breathing gas reservoir in a direction of flow of the breathing gas and downstream of the breathing gas outlet duct in the direction of flow of the breathing gas; a breathing gas delivery means arranged in the breathing circuit downstream of the breathing gas reservoir in the direction of flow of the breathing gas; an air inlet for introducing ambient air into the breathing circuit, wherein the air inlet is arranged between the PEEP valve and the breathing gas delivery means; and a control means for controlling the ambient air entering through the air inlet, for controlling the breathing gas delivery means, for controlling the PEEP valve with the patient connection in the closed patient connection state and for controlling the breathing gas outlet valve, the control means, during a first phase, closing the PEEP valve, with the patient connection in the closed patient connection state, opening the breathing gas outlet valve and opening the air inlet and establishing a first phase gas flow path from the air inlet, through the breathing gas delivery means and through the breathing gas outlet duct, the first phase gas flow path being in flow connection with the breathing gas reservoir to cause a breathing gas volume to be delivered out of the breathing gas reservoir via the breathing gas outlet duct, based on the operation of the gas delivery means, for removing breathing gases from the breathing circuit and the control means, during a second phase, opening the PEEP valve, with the patient connection in the closed patient connection state, closing the breathing gas outlet valve and closing the air inlet and establishing a second phase gas flow path providing a circulation of gas in the breathing circuit to move breathing gas from an area between the PEEP valve and the breathing gas reservoir.