Anesthetic metering system

An anesthetic metering device comprising:

• an anesthesia apparatus with a mounting element and a metering line having a connection to a respiration system with a breathing gas flow;
• an anesthetic reservoir container with a propellant space and a liquid anesthetic reserve containing a liquid inhalation anesthetic and delimited by a flexible material wall, the flexible material wall separating the liquid anesthetic reserve from the propellant space, the anesthetic reservoir being connectable to and disconnectable from the anesthesia apparatus via mounting in said mounting element;
• a propellant disposed in the propellant space applying pressure acting on the liquid anesthetic reserve via the wall material;
• a first valve element connected to the anesthetic reservoir and in flow connection with the liquid anesthetic reserve, the first valve element being actuatable upon the anesthetic reservoir being connected into said anesthesia apparatus mounting element;
• and
• a volumetric nozzle connected to the metering line for the release of liquid anesthetic to the anesthesia apparatus and into the breathing gas flow of the respiration system.

A method of metering an inhalation anesthetic, comprising the steps of:

• providing an anesthesia apparatus with a mounting element, a metering line, a closed respiration system with a breathing gas flow, and a volumetric nozzle connected to the metering line for the release of anesthetic to the breathing gas flow of said closed respiration system;
• providing an anesthetic reservoir container with a propellant space and a liquid anesthetic reserve delimited by a flexible material wall, the flexible material wall separating the liquid anesthetic reserve from the propellant space and with a propellant disposed in the propellant space applying pressure acting on the liquid anesthetic reserve via the wall material;
• providing the reservoir container with a valve element connected to the anesthetic reservoir and in flow connection with the liquid anesthetic reserve, the valve element being actuated, allowing flow of the liquid anesthetic out of the liquid anesthetic reserve, upon the mounting of the reservoir container on the mounting element;
• and
• mounting the anesthetic reservoir container to the mounting element to allow liquid anesthetic to flow into said metering line for the release of anesthetic to the breathing gas flow.