Patent ID: 7856978
Filing Date: 2010-12-28
Classification: A61M

Abstract:
1. A process for operating an anesthesia apparatus, the process comprising: providing a breathing circuit with a first one-way valve and a second one-way valve; providing a patient connection with an actuatable closing device; providing a gas dispensing means for dispensing a gas mixture; providing an anesthetic dispensing means for dispensing anesthetic into said gas mixture; dispensing said gas mixture into the breathing circuit; providing a control means connected to said actuatable closing device, said gas dispensing means and said anesthetic dispensing means for controlling a flow of anesthetic from said anesthetic dispensing means to said gas mixture and for controlling said actuatable closing device such that said control means controls feed of said gas mixture to a patient via said actuatable closing device; circulating the gas mixture in the breathing circuit in a first operating state, said control means controlling said flow of anesthetic from said anesthetic means into said gas mixture such that a preset anesthetic concentration is established in said gas mixture in said first operating state, said control means controlling feed of said gas mixture to the patient such that said gas mixture is not released to the patient when said gas mixture is in said first operating state, said control means controlling said actuatable closing device such that said actuatable closing device is in a closed position in said first operating state, whereby said breathing circuit is not in communication with the patient in said first operating state; and respirating the patient connected to the anesthesia apparatus in a subsequent second operating state such that said gas mixture with said preset anesthetic concentration is received by the patient in said second operating state, said control means controlling said actuatable closing device such that said actuable closing device is open in said second operating state, wherein said gas mixture with said preset anesthetic concentration passes through said actuatable closing device in said second operating state.