초록 ▼

A reinhalation system for an anesthetic apparatus includes exhalation and inhalation branches which are directly connected to each other. The inhalation branch comprises a dosing unit capable of supplying a component to said inhalation branch. A control unit controls the dosing unit. A first concent

A reinhalation system for an anesthetic apparatus includes exhalation and inhalation branches which are directly connected to each other. The inhalation branch comprises a dosing unit capable of supplying a component to said inhalation branch. A control unit controls the dosing unit. A first concentration measuring device measuring the concentration of the component and a flow meter measuring a flow rate of a fluid are provided. The dosing unit supplies at least the component to the inhalation branch at a dosing point located downstream of the first concentration meter. The control unit controls the supply of the component as a function of the concentration of the component measured by the concentration meter and the flow rate of the fluid measured by the flow meter.

대표청구항 ▼

A reinhalation system of an anesthetic apparatus, comprising a breathing element of a patient; a ventilating source; an exhalation branch and an inhalation branch, said exhalation and inhalation branches being directly connected to each other and each of said exhalation and inhalation branches inter

A reinhalation system of an anesthetic apparatus, comprising a breathing element of a patient; a ventilating source; an exhalation branch and an inhalation branch, said exhalation and inhalation branches being directly connected to each other and each of said exhalation and inhalation branches interconnecting said ventilating source with said breathing element; a gas mixture containing at least a first component, said first component being at least partially introduced into said inhalation system at said inhalation branch; said inhalation branch being located downstream of said ventilating source and comprising a dosing unit supplying said first component to said inhalation branch, a control unit including a computer controlling said dosing unit, a first gas-concentration meter provided in the inhalation branch and measuring the concentration of said first component in the inhalation branch, a flow meter located in the inhalation branch, said flow meter determining a flow rate of said gas mixture in the inhalation branch, said dosing unit supplying at least said first component to said inhalation branch at a dosing point located downstream of said first concentration meter, said control unit controlling said supply of said first component as a function of the concentration of said first component measured by said first concentration meter and the flow rate of the gas mixture measured by said flow meter; a feed forward control system which includes said flow meter located in said inhalation branch upstream of said dosing point and said gas concentration meter wherein said gas concentration meter is located upstream of said dosing point, said flow meter and said gas concentration meter generating/sending signals to said computer, wherein said computer is responsive to signals received from said flow meter and gas concentration meter and said computer determines a required gas flow rate to achieve a desired gas concentration for patient delivery; and an adjustment mechanism achieving high-speed gas concentration adjustments which comprises said dosing point and said gas concentration meter being positioned very close together such that the volume of gas and the system between said dosing point and said gas concentration meter are minimized; wherein said rate of flow of the gas mixture and concentration of said first component in said inhalation branch vary with breathing of a patient into said breathing element.