SU239507A1 - APPARATUS FOR INHALATION DRUGS - Google Patents

Description

Apparatus for inhalation anesthesia is known, containing a piped-connected compressor or a can of compressed air and inhalation and expiratory valves, an injector, an evaporator with a drip dosimeter of a narcotic substance, and an electrocontact pressure gauge.

In the proposed apparatus simultaneously used electrocontact manometer and separation device. This reduces the switching pressure of the valves and prevents the drug mixture from entering the 1-meter.

The drawing shows a diagram of the apparatus for inhalation anesthesia.

The proposed apparatus contains connected by pipelines / compressor or a cylinder of compressed air (not shown in the drawing), an evaporator 2 with a drip dosimeter 3 narcotic substances and valves 4 and 5, respectively, exhalation and inhalation.

The negative pressure created in the injector 6 causes, when the valve 4 is open, suction of gas from the lungs through the pipeline 7 and the removal of this air through the pipeline 8. Thus, exhalation is carried out. At the same time, the negative pressure in the pipe 9 creates a pressure drop in the electrocontact pressure gauge 10, as a result of which the contact 11 closes, the electromagnet 12 switches on, which closes the valve 4 and opens the valve 5. At the same time, exhalation stops and exhalation begins.

During inhalation, the air but the pipeline 13 enters the evaporator 2, where it is saturated with the vapors of the drug. The narcotic mixture obtained in this way enters the lungs. The positive pressure that has arisen at this time in the pipe 9 leads to the opening of the contact 11, but the electromagnet 12 does not turn off, as it receives power through its own contact 14, closed at the moment of turning on the electromagnet.

At a certain value of positive pressure in the pipe 9, the contact 15 is closed, the relay 16 is activated and the contact 17 is opened, as a result of which the circuit, the electromagnet 12, is broken. The electromagnet is turned off, as a result, valve 4 is closed and valve 5 opens. At this point, inhalation stops and exhalation begins, etc.

The use of an electrocontact pressure gauge 10 filled with a 1-2% aqueous solution of sodium chloride reduces the pressure necessary for switching valves 4 to 5. The pressure gauge 10 is connected to a subshalf chamber 18, which eliminates inertial fluctuations in the level of fluidity in the pressure gauge 10.

A separator device 19 is used to prevent the narcotic mixture from entering the pressure gauge 10 in the apparatus.

Subject invention

An inhalation anesthesia apparatus containing a compressor or compressed air cylinder connected to a pipeline and inhalation and exhalation valves, an injector, an evaporator with a drop dosimeter of a narcotic substance, and an electrocontact manochometer, in order to reduce the pressure of switching valves and prevent the mixture from entering a manometer, along with an electrocontact manometer, a separating device is installed in it.

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