Anesthesia system with a anesthetic evaporator
AssigneeDräger Medical GmbH
InventorsRalf Dittmann, Jürgen Manigel, Ralf Heesch, Thomas Stepan
Life of this patent
Estimating the term…
Abstract
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.
Claims20
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.
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.
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.
Dependencies are inferred from the claim text.