Anaesthesia apparatus and method for operating an anaesthesia apparatus
AssigneeMaquet Critical Care AB
InventorsMario Loncar, Christer Ahlmén, Stefan Broborg
Life of this patent
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Abstract
An anaesthesia apparatus has a control unit that controls a gas flow of a flushing gas through at least part of the anaesthesia apparatus so as to flush anaesthetic agent from the apparatus when the apparatus is not connected to a patient. In this way the remaining anaesthetic agent can be removed from the anaesthesia apparatus after use before connecting another patient. Pre-use check of the apparatus can be performed automatically.
Claims22
An anaesthesia apparatus comprising an inspiration line and an expiration line, connectable to and disconnectable from a patient, at least one gas source that provides breathing gas to the inspiration line, a vaporizer that provides vaporized anaesthetic to the inspiration line, a CO2 absorber in the inspiration line, a common line that transports breathing gas and expired gas, and an evacuation line for expired gas for connection to an evacuation system, said evacuation line comprising a PEEP valve, and a control unit that controls a gas flow of a flushing gas through at least part of the anaesthesia apparatus to flush anaesthetic agent from the apparatus automatically when the expiration line and the inspiration line are not connected to the patient.
A method of operating an anaesthesia apparatus, said anaesthesia apparatus comprising an inspiration line and an expiration line, said expiration line comprising a PEEP valve, at least one gas source for providing breathing gas to the inspiration line, a vaporizer for providing anaesthetic to the inspiration line, and a common line for transporting breathing gas and expired gas, and an evacuation line for evacuating expired gas, said method comprising the step of providing a gas flow of a flushing gas through at least part of the anaesthesia apparatus as to flush anaesthetic agent from the apparatus automatically when the apparatus is not connected to a patient.
A computer-readable medium encoded with programming instructions, said computer-readable medium being loadable into a control unit of an anaesthesia apparatus comprising an inspiration line and an expiration line, said expiration line comprising a PEEP valve, at least one gas source for providing breathing gas to the inspiration line, a vaporizer for providing anaesthetic to the inspiration line, and a common line for transporting breathing gas and expired gas, and an evacuation line for evacuating expired gas, said programming instructions causing said control unit to:
- provide a gas flow of flushing gas through at least a part of the anaesthesia apparatus to flush anaesthetic agent from the apparatus automatically when the apparatus is not connected to the inspiration line and the expiration line.
Dependencies are inferred from the claim text.