SU307793A1 - Sucker - Google Patents

Description

The invention relates to devices for the suction of mucus and sputum from the patient's respiratory tract, and specifically to an aspirator.

Known aspirators containing jar, vacuum gauge, shut-off valve, outlet pipe and hose with a tip.

However, due to the lack of a device for controlling the flow rate of gas in known aspirators, the patient’s lungs and the jar do not provide a constant pressure drop under conditions of varying pressure in the pressure chamber, which can lead to barotrauma of the patient’s lungs.

The proposed aspirator differs from the known ones in that it is equipped with an automatic gas flow regulator installed on the outlet pipe and a safety spring-loaded valve located on the can. The automatic gas flow regulator is made of interconnected valve, spring-loaded bellows and adjustment screw, inlet pipe connected to the can and outlet pipe connected to the shut-off valve, and the valve is directly connected to the sensing element of the bellows.

prevents patient's lung barotrauma from aspiration of mucus and sputum from his respiratory tract and treatment under conditions of elevated oxygen pressure in the pressure chamber. The drawing shows a schematic diagram of the proposed aspirator.

The aspirator contains a can / with a vacuum gauge 2 installed on it, an outlet pipe 3 with a shut-off valve 4, a hose

5 with a tip 6. The aspirator is equipped with an automatic gas flow regulator 7 installed on the outlet pipe. The regulator is made in the form of interconnected valve 8, spring 9, bellows 10

and the adjusting screw //, the inlet 12, connected to the can /, and the outlet 13, connected to the shut-off valve 4. The aspirator is also equipped with a spring-loaded safety valve 14,

established by the bank.

If there is an overpressure in the pressure chamber 15 in the can / a reduced pressure is created - it is connected to the atmosphere outside the chamber, for which it is necessary to open the valve 4 and close the openings of the tip 6. At the same time, the gas through the nozzles 12 and 13 through the valve 8 through the outlet pipe 3 out. The difference between the pressure in the pressure chamber 15 and the pressure in the bank 1

and is controlled by the vacuum gauge 2. When the screw is rotated, the flow area of the valve 8 changes, and hence the gas flow from the can, i.e. the pressure value in it. In order to aspirate mucus and sputum, the doctor inserts a catheter connected to tip 6 into the patient’s airway and covers the side opening of the tip with a finger. Fluid from the patient's respiratory tract is trapped in a gas stream and passes through hose 5 and is collected in a can.

To simplify aspiration, the side opening of the tip 6 is opened. When the pressure in the pressure chamber changes, the established pressure drop between the lungs and the can is automatically maintained by means of a spring-loaded bellows 10, rigidly connected valve 8. When the pressure in the pressure chamber and in the lungs increases, the pressure in the regulator 7 simultaneously increases; at the same time, the springs 9 and sylphols 10 move valve 8 to the right (see drawing), the hole area through which the gas passes from the can is reduced, and the gas flow through valve 5 decreases with it until the pressure drop between the lungs and the jar will not accept the nominal value set by the adjustment screw 11.

When the pressure in the pressure chamber decreases, the opposite effect occurs, in which the elastic forces of the spring 9 and the bellows 10 move the valve 5 to the left (see drawing). The orifice area and the gas flow rate through the valve increase, which leads to an increase in the pressure drop to nominal.

When a pressure drop occurs in the can / patient-dangerous pressure relief valve 14 opens, an additional leakage of air into the can occurs. After the aspiration or liquid filling is completed, the cans valve 4 is closed.

Subject invention

An aspirator containing a can, a vacuum gauge, a shut-off valve, an outlet piping and a hose with a tip, characterized in that in order to automatically control the pressure difference between the patient’s lungs and the can when the pressure in the pressure chamber is changed and to prevent the patient’s mucus and sputum from aspirating respiratory tract and treatment in conditions of increased oxygen pressure in the pressure chamber, it is equipped with an automatic gas flow regulator installed on the outlet pipe, safety The automatic valve of the gas flow is made in the form of interconnected valve, spring-loaded bellows and adjustment screw, inlet pipe connected to the can and outlet pipe connected to the shut-off valve, and the valve is directly connected to the sensitive element bellows.

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