With the installed QualityMIX N2O gas blender, the desired concentrations of nitrous oxide (0-70%) and oxygen (30-100%) can be precisely mixed and delivered to the patient. The gas mixer has a demand valve that allows the patient to inhale the gas mixture as required. This ensures safe and effective anesthesia or sedation during the procedure without wasting gas or exceeding the MAC values for the personnel. The device can optionally be operated or equipped with an expiratory air suction system (AGFS / AGSS) or a filter option (ORS) for vacuum systems or a compressed air injector. This option ensures that no contaminated air enters the room and the safety of patients and medical staff is guaranteed.