SU256949A1 - APPARATUS FOR ARTIFICIAL RESPIRATION - Google Patents

Description

Apparatus for artificial respiration is known, comprising an injector and a jet element with a feed channel, direct and inclined output channels, control channels and a negative feedback channel.

In the apparatus according to the invention, unlike the known ones, there is an inhalation-exhalation valve, by means of which the lungs of the patient are connected to the direct output channel of the jet element. The latter is equipped with a positive feedback channel connecting the inclined output channel to the control channel, to which a variable volume capacitance is connected through a regulating choke. The movable wall of this container interacts with the hole connecting the cavity, located in front of the receiving opening of the inclined exit channel, with the atmosphere.

FIG. 1 shows a diagram of the apparatus for artificial respiration; in fig. 2 - schematic of the jet element.

The artificial respiration apparatus consists of three main components: an injector 1, a jet element 2 and an inhalation and expiratory valve 3. The injector / delivers an air-oxygen mixture into the jet element. The jet element 2 provides artificial ventilation of the lungs; he contains

A supply channel 4 connected to the output of the injector 1, an output channel 5 located coaxially with the channel, an inclined output channel 6 and control channels 7 and 8. Channel 7 is connected to channel 5 via choke 9, and channel 8 is connected to channel 6.

When gas flows through channel 7, a negative feedback signal is generated; when gas flows through channel 8, a positive signal

feedback. The forward exit channel 5 is used to inject gas into the patient’s lungs during inhalation. Switching from inspiration to exhalation occurs due to a negative feedback signal due to the effect of the jet flowing from the control channel 7 on the main jet. The switching level is determined by the position of the throttles 9.

In the inclined channel 6, the gas stream is during the expiration of i and is supported there by the effect of positive feedback of the jet flowing out from the control channel 8. Subsequently, it enters the atmosphere through the hole 10.

Switching from exhalation to inhalation is carried out by breaking off when trying to inhale or after a specified period of time with controlled artificial respiration by blocking the opening 10. For this is the movable wall 11 of the chamber 12, the breath from the inclined channel 6. The exhalation time is measured by the choke 13 regulating the rate of occupancy of the camera. The chamber is emptied during inhalation by the action of spring 14. Inhalation and exhalation clanan 3 includes inhalation clanan 15, exhalation clanan 16 and reverse clanan 11, which provides optimal conditions for conducting auxiliary respiration.

When the apparatus is in operation, oxygen from the cylinder through the reducer and injector / enters the inlet channel 4 and then through the direct channel 5 into the patient's lungs. The atmosphere is blocked by the valve 16, and the valve 15 is open. When the pressure set by the throttle 9 is reached, the control signal in channel 7 reaches a critical value and does not retract the working jet into the inclined channel 6, where it is fixed due to the effect of the jet on channel 8 of positive feedback.

Annarate switches from inspiration to exhalation, while the gas from the lungs through the exhalation valve 16 and the non-return valve 17 escapes into the atmosphere. At the same time, the filling of the chamber 12 begins through the throttle 13, depending on the position of which the fixed wall 11 does not recover after a defined period of time.

hole 10. With auxiliary breathing, the device switches from inspiration to exhalation when the patient tries to inhale. During inhalation, the chamber 12 is emptied by the action of the spring 14.

Subject invention

An artificial respiration apparatus containing an injector and jet element with a feed channel, a forward and in-layer output channels, control channels and a negative feedback channel, characterized in that, in order to control the expiration time, reduce breathing resistance during exhalation and reduce oxygen consumption, it has an inhalation-expiratory clan, through which the lungs of the patient are connected to the forward output channel of the jet element, equipped with a positive feedback channel, connected A sloping output channel with a control channel to which a variable volume tank is connected through a regulating choke, the movable wall of which is connected to an opening connecting the cavity located in front of the receiving opening of the inclined output channel to the atmosphere.

2 and 0 II 12 6 13

-LL

Omba / i iP ldao

/ 7

12

- / X /