System arrangement for the evacuation of anaesthesia or analgesia gas

A system for collecting and removing anesthesia from an anesthesia device in operation theaters comprising:

• an anesthesia gas source;
• a vacuum source;
• a mask device adapted to be applied to the face of a patient and having collecting means for collecting and removing anesthesia gas leaking out and escaping during operation of said system;
• at least one supply and removing means communicating said anesthesia gas source and air to said mask device for supplying a mixture of said anesthesia gas and air to said patient and for removing anesthesia gas and air mixture exhaled by said patient;
• a vacuum line connected between said vacuum source and said collecting means on said mask device for conducting said anesthesia gas collected by said collecting means to said vacuum source;
• a T-shaped joint in said vacuum line having two aligned openings connected to said vacuum line so that a flow path is produced between said aligned openings;
• a third opening in said T-shaped joint;
• a branch line connecting said third opening to said at least one supply and removing means for conducting therefrom exhaled gas-air mixture to said T-shaped joint and said vacuum source;
• and
• ejector means in said third opening of said T-shaped joint for producing a vacuum in said branch line differing from said vacuum in said vacuum line.