SU1616662A1 - Artificial pulmonary ventilation device - Google Patents

Abstract

The invention relates to medical technology for artificial ventilation of the lungs to victims of an accident in a coal mine. To increase the stability of artificial ventilation of the lungs in complicated mine conditions, the device contains a switching device 1, an injector 2, a non-reversible valve 3, a face mask 4, a tube 5, chambers 15 and 18 communicating with the atmosphere, a working chamber 17, a power chamber 20 , a flow chamber 19, a chamber 16 and an additional flow chamber 21. 1 Il.

Description

one

(21) 4407560 / 28-14 (22) 04/11/88 (46) 12/30/90. Bul №48

(71) All-Union Research Institute of Mine Rescue

(72) E.A. Akhlamov, D.R. Dimant and O.V. Sobolev (53) 615.475 (088.8)

(56) USSR Author's Certificate NS 513703, cl. A 62 B 7/02, 1976,

(54) DEVICE FOR ARTIFICIAL VENTILATION OF THE LUNGS

(57) The invention relates to medical technology for artificial ventilation of the lungs to victims of a coal mine accident. To increase the stability of artificial ventilation of the lungs in complicated mine conditions, the device contains a switching device 1, an injector 2, a non-reversible valve 3, a face mask 4, a tube 5, chambers 15 and 18 communicating with the atmosphere, a working chamber 17, a power chamber 20 , a flow chamber 19, a chamber 16 and an additional flow chamber 21. 1 Il.

The invention relates to medical technology for artificial ventilation of the lungs to victims of an accident in a coal mine.

The aim of the invention is to increase the stability of artificial ventilation of the lungs in complicated conditions of an accident in the mine.

The drawing schematically shows a device for artificial ventilation of the lungs (ALV).

A device for artificial ventilation of the lungs comprises a switching device, a device 1, an injector 2, an irreversible valve 3, a face mask 4, a tube 5 supplying compressed gas.

The switching device 1 contains membranes 6, 7, valves 8-10, springs 11 14, chambers 15-21, air ducts 22, 23, throttles 24, 25. Valves 8-10 contain nozzles 26-28 and dampers 29-31. The flaps 29, 31 contain the rods 32, 33. The chambers 15, 18 communicate with the atmosphere, the working chamber 17 is connected through the throttle 24 to the power supply chamber 20, the flow chamber 19 is connected with in. 1 "

In addition to the injector 2, an additional flow chamber 21 is connected to the chamber 16 located between the diaphragm 6 and the pneumatically controlled valve 8, which via the choke 25 communicates with the atmosphere.

Block-IVL works as follows.

Gas under pressure through the tube 5 enters the supply chamber 20 and through the duct 22 through the throttle 24 into the working chamber 17. Under the action of overpressure in the chamber 17, the membrane 7 moves, pressing the spring 1.3, rests against the rigid center rod 32 of the valve 29 and opens the valve 9. Gas from supply chamber 20 flows through nozzle 28, flow chamber 19, injector 2, non-reversible valve 3, and face mask 4 into the patient's lungs. Inhalation occurs. Upon further movement of the membrane 7, the flap 29 of the valve 9 rests on the rod 33 of the flap 31 and opens the valve 10. At the same time, the gas from the feed chamber 20 also flows through the nozzle 27, the additional flow chamber 21, through the duct 23 into the chamber 16, acts on membrane 6, in

about

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The result of which opens the valve 8 m of gas from the working chamber 17 is discharged through the chamber 16 and the throttle 25 to the atmosphere,

After the pressure in the working chamber 17 has decreased, the membrane 7, valves 29-31, under the action of springs 11-14, returns to its original position. The flow of gas into the lungs is stopped, exhalation occurs — gas from the lungs, through the action of the elastic forces of the respiratory organs, passes through the face mask 4, the non-reversible valve 3 into the atmosphere.

The duration of the expiration phase corresponds to the time of movement of the membrane 7 until it stops at the stem 32 of the valve 29, the duration of the inspiration phase is equal to the time of movement of the membrane 7 and the valve 29 against the stop at the stem 33 of the valve 31, the frequency of the cycles depends on the gas flow to the chamber 17, which is set by the throttle 24 The throttle 25 sets the operating mode of the membrane 6 and valve 8.

A device for artificial ventilation of the lungs allows setting and stabilizing the frequency, respiratory rhythm / inspiratory volume, the ratio of inspiratory and expiratory time, making them independent of the aerodynamic conditions in the breathing circuit of injured miners with obstructive

restrictive respiratory changes, as well as in all other cases where the airway and pulmonary disability are impaired or mechanical pressure is applied to the chest of the victim.

Claims (1)

An apparatus for artificial ventilation of the lungs, comprising a switching device with spring-loaded membranes, pneumatic resistances, a supply chamber with an inlet pipe and a valve and a chamber with a valve connected through an air resistance to the atmosphere, an injector, a non-reversible breathing valve and a facial mask characterized by that, in order to increase the stability of artificial ventilation of the lungs in complicated conditions of an accident in the mine, it is equipped with an additional chamber that communicates with the feed chamber With a spring-loaded valve mounted therein coaxially and successively feed valve chamber, the additional chamber connected to the chamber through pnevmosoprotivlenie communicating with the atmosphere, and the valve is set to cooperate with a feed valve chamber.