초록 ▼

An anesthesia system with an anesthetic evaporator can be operated even in case of a defect, particularly in case of a power outage. The anesthetic evaporator (10) and a valve arranged upstream of the anesthetic evaporator (10) are provided, whereby the gas flow through the valve (8) is conveyed com

An anesthesia system with an anesthetic evaporator can be operated even in case of a defect, particularly in case of a power outage. The anesthetic evaporator (10) and a valve arranged upstream of the anesthetic evaporator (10) are provided, whereby the gas flow through the valve (8) is conveyed completely or partially through the anesthetic evaporator (10) or a bypass line (9) past the anesthetic evaporator (10) in case of operation in accordance with the regulations, while the gas flow takes place only through the anesthetic evaporator (10) in case of a defect.

대표청구항 ▼

What is claimed is: 1. An anesthesia system, comprising: an anesthetic evaporator with a gas inlet and a gas outlet, the anesthetic evaporator operating according to the bypass principle between the gas inlet and the gas outlet; a breathing gas source for supplying breathing gas at the gas inlet;

What is claimed is: 1. An anesthesia system, comprising: an anesthetic evaporator with a gas inlet and a gas outlet, the anesthetic evaporator operating according to the bypass principle between the gas inlet and the gas outlet; a breathing gas source for supplying breathing gas at the gas inlet; a bypass line bypassing the anesthetic evaporator; a switching means at said gas inlet for selectively completely or partially guiding breathing gas of said breathing gas source through the anesthetic evaporator or through the bypass line to the gas outlet; a control means for actuating the switching means in order to change the concentration of the anesthetic at the gas outlet; and a monitoring means for activating the switching means in a defective state, such that breathing gas is guided completely via the anesthetic evaporator to the gas outlet. 2. An anesthesia system in accordance with claim 1, further comprising a breathing gas circulation for supplying a patient with breathing gas, said breathing gas circulation is arranged downstream of the gas outlet. 3. An anesthesia system in accordance with claim 2, further comprising: breathing gas monitors for determining the gaseous composition of the breathing gas wherein said breathing gas circulation has an inspiration line and an expiration line connected to a Y-piece for connection to a patient and said breathing gas monitors include a first gas monitor connected via a selector switch to the gas outlet and to the inspiration line for selective gas sampling from the gas outlet or from the inspiration line and a second breathing gas monitor for taking a gas sample near the patient in the area of the Y-piece. 4. An anesthesia system in accordance with claim 1, further comprising an oxygen source connected as emergency gas supply upstream of the anesthetic evaporator to provide breathing gas thereto. 5. An anesthesia system in accordance with claim 4, wherein the breathing gas is taken from the oxygen source in the presence of a defective state as the breathing gas guided completely via the anesthetic evaporator to the gas outlet. 6. An anesthesia system in accordance with claim 1, wherein the switching means comprises a proportional valve conveying predetermined partial gas flows through the anesthetic evaporator and the bypass line. 7. An anesthesia system in accordance with claim 1, wherein the switching means comprises a switching valve conveying the gas flow in a fast switching sequence either through the anesthetic evaporator or the bypass line. 8. A system in accordance with claim 1, wherein: said anesthetic evaporator includes an adjusting part for adjusting an anesthetic concentration generated by said anesthetic evaporator, said adjusting part of said anesthetic evaporator being set at a maximum concentration for patient. 9. A process for operating an anesthesia system, the process comprising the steps of: arranging an anesthetic evaporator along a line between a gas inlet and a gas outlet and with a bypass line between the gas inlet and the gas outlet for bypass operation of the anesthetic evaporator between the gas inlet and the gas outlet; providing a switch for switching a gas flow at the gas inlet; activating the switch in such a way that the gas flow selectively reaches the gas outlet completely or partially through the anesthetic evaporator or through the bypass line bypassing the anesthetic evaporator; and activating the switch such that gas flow is conveyed completely via the anesthetic evaporator in the presence of a defective state. 10. A process in accordance with claim 9, further comprising: connecting an oxygen source as an emergency gas supply for supply of gas upstream of the anesthetic evaporator; wherein said step of activating the switch such that gas flow is conveyed completely via the anesthetic evaporator in the presence of a defective state includes switching off of a breathing gas source in the presence of the defective state and taking the breathing gas from the oxygen source to form the gas flow in the presence of the defective state. 11. A process in accordance with claim 10, further comprising: operating the anesthetic evaporator at a maximum concentration for patient. 12. A process for operating an anesthesia system, the process comprising the steps of: providing a breathing gas source for supplying breathing gas; providing an anesthetic dispensing unit with an inlet and an outlet, said inlet being connected to said breathing gas source and receiving the breathing gas, said anesthetic dispensing unit including a bypass line connecting said inlet to said outlet, said anesthetic dispensing unit also including an anesthetic evaporator connected to said inlet and said outlet, said anesthetic evaporator including an adjusting part for adjusting an anesthetic concentration generated by said anesthetic evaporator, said anesthetic dispensing unit including a valve at said gas inlet for selectively guiding the breathing gas completely through said anesthetic evaporator and not through said bypass line, or said valve guiding the breathing gas partially through the anesthetic evaporator and partially through said bypass line; adjusting said adjusting part of said anesthetic evaporator to a maximum concentration for a patient; controlling said breathing gas source and said valve to deliver breathing gas with anesthetic at said outlet, with said anesthetic in the breathing gas being at a concentration lower than said maximum concentration; determining a defective state in the anesthesia system; activating said valve to guide the breathing gas completely through said anesthetic evaporator when said defective state has been determined. 13. A process in accordance with claim 12, further comprising: providing a manual oxygen source connected to an inlet of said anesthetic evaporator; during a determination of said defective state, manually operating said manual oxygen source to supply oxygen to said anesthetic evaporator. 14. A process in accordance with claim 12, further comprising: providing a breathing gas circulation for supplying a patient with breathing gas, said breathing gas circulation being arranged downstream of said outlet of said anesthetic dispensing unit. 15. A process in accordance with claim 14, further comprising: providing an inspiration line and an expiration line in said breathing gas circulation, said inspiration line and said expiration line being connected to a Y-piece for connection to a patient; providing a carbon dioxide absorber between said expiration line and said inspiration line for feeding exhaled breathing gas from the expiration line back into the inspiration line downstream of said anesthetic dispensing unit; providing a first gas monitor connected via a selector switch to selectively connect said first gas monitor to either said gas outlet of said anesthetic dispensing unit or to said inspiration line downstream of said carbon dioxide absorber; providing a second gas monitor for measuring the breathing gas in an area of said Y-piece; comparing results of said first and second gas monitors to determine said defective state. 16. A process in accordance with claim 15, further comprising: providing a manual oxygen source connected to an inlet of said anesthetic evaporator; during a determination of said defective state, controlling said breathing gas source to stop supplying the breathing gas to said inlet of said anesthetic dispensing unit; and manually operating said manual oxygen source to supply oxygen to said anesthetic evaporator. 17. A process in accordance with claim 16, further comprising: a manual respiration pouch connected to said breathing gas circulation and for generating respiration strokes through said breathing gas circulation during said defective state. 18. A process in accordance with claim 15, wherein: said manual oxygen source feeds oxygen to said inlet of said anesthetic evaporator without the oxygen passing through said valve of said anesthetic dispensing unit. 19. A process in accordance with claim 12, wherein: said breathing gas source provides a plurality of different breathing gases to said valve of said anesthetic dispensing unit. 20. A process in accordance with claim 12, wherein: said valve of said anesthetic dispensing unit selectively guides the same breathing gas from said breathing gas source either through said anesthetic evaporator or through said bypass line.