SU1292787A1 - Humidifier for lung artificial ventilation apparatus - Google Patents

Abstract

The invention is intended to moisten the respiratory mixtures supplied with a patient during artificial ventilation of the lungs (ALV) in surgery, resuscitation and therapy in the treatment of respiratory diseases with steam and allows to ensure adequate ventilation by maintaining a predetermined volume of airways. The humidifier contains the containers 1 and 5, the cover 2, the pipes 3 and 4, the electric heater 6, the steam supply controller 7 in the form of adjustable throttle, the cup 8, the check valve 10. The water in the tank 5 is heated to boiling. Steam through regulator 7 flows to nozzle 4, mixing with gas from the ventilator, which is heated and humidified, and the passage in the gap between tank 1 and cup 8. When the amount of water decreases, it is filled through port 9. 1 sludge. & sl I 8-9A - Pa k s with to with ND 00 -Nsh 10

Description

 gsnie refers to medical l. :; specifically to humidifiers, pre- i;:::% of the moistening of respiratory water with steam by the vapor of the water supplied to the patient by the art of pulmonary ventilation (AVL) in surgery, resuscitation and therapy in the treatment of various respiratory diseases.

11, 1mo. ,;: gaining is providing.-MCKiijTHOCTH ventilation by supporting-: -;: ;; :. ::.: 1 yes: air volume: - | J iiy TOiL

 : iopTOKC is a schematic representation of the SW. ui:, 5 :, for artificial apparatus

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 G ..i contains the main capacitance I 1) b,. ;; G | 2 and the input connections 3 and you- 41). ,, ,,,. communicating with the add-on) - ICG | H iv-V-ri, 5, containing tubular 4.; :: (P 6 and feed regulator 7. :: H | Olynny, for example, in the form of a regulating throttle. To monitor the water flow in the main tank 1 made of transparent material.

Inside the main container 1, a thin-walled glass 8 is installed coaxially to it, hermetically attached to the lid 2.

The internal cavity of the glass 8 is communicated with the atmosphere through the hole 9 in the lid 2 and with the main tank 1 through the check valve 10 located in the hole in the bottom of the glass 8.

The inlet 3 and outlet 4 pipes are pneumatically connected to the annular cavity A between the walls of the glass 8 and the main container 1, the minimum cross-sectional area of which is determined by the passage section (internal diameter) of the pipes 3 and 4.

Before starting work, the humidifier poured water through the opening 9 in the lid 2, filling the cup 8 and entering through the check valve 10 in tanks 1 and 5. The water level in tank 1 limits the annular cavity A, and due to the thinness of the glass 8 it practically does not reduce the overall volume of water poured into the humidifier.

The humidifier works as follows.

When the humidifier is turned on into the electrical network (supply voltage to the electric heater 6), water is poured into the humidifier to the maximum level, heated in the tank 5 to boil due to heat transfer through its walls. Steam of boiling water through the steam supply regulator 7 flows to the outlet nozzle 4, where, displaced with gas coming from the ventilator and passing through the humidifier from the inlet nozzle 3 to the outlet nozzle 4 above the water surface, the annular gap A is fed further into the respiratory circuit. In this case, the steam heats and moistens the breather.

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ny gas supplied to the patient. The degree of heating can be varied by regulator 7 by dosing the steam supply.

With increasing pressure in the breathing circuit during an inhalation of a patient during an IVL, the check valve 10 prevents gas from escaping into cavity 8 and into the atmosphere through the water layer and the opening 9. At the same time, there are no fluctuations in water levels in tanks 1 and 5, since their surface spaces are communicated via the steam supply controller 7.

As water is used during the operation of the humidifier, it can be poured into the glass 8 through the opening 9. When the pressure in the breathing circuit (in the patient's expiratory flow during the ventilator) decreases, water from the glass 8 flows through valve 10 into tanks 1 and 5, filling them without depressurization of the breathing circuit.

The internal extensibility of the proposed humidifier, determined by the total volume of the surface space of cavity A and container 5, is 10–12 times lower than in the prototype and does not exceed 0.06 ml / cm of water. Art. with a minimum level of water and 0.02 ml / cm, water. Art. at the maximum level.

Thus, the independence of the parameters of the ventilator from the changes in the water level in the humidifier is practically ensured, making it possible to use it with ventilators designed for children of any age.

Thus, a change in the water level in the UDS-1P steam humidifier, which is the prototype, could cause the difference between the ventilator installed on the ventilator and the actual ventilation of the lungs at 1.5-3 l / min. The use of the proposed humidifier allows this discrepancy to be reduced to an average of 0.2 l / min, which significantly increases the effectiveness of treatment of respiratory failure.

In addition, the ability to replenish water during the operation of the humidifier without depressurization of the breathing circuit improves the safety of patients who do not have independent breathing and who are permanently connected to the ventilator.

Claims (1)

Invention Formula A humidifier for the ventilators, containing a main tank with a lid and a gas inlet and outlet, and an additional tank connected to the main tank with a heating element and a steam supply regulator, characterized in that in order to ensure adequate verticalization by maintaining a given volume airways, it is equipped with a glass A valve is installed in the bottom, a co-hole is installed, the cavity being formed axially inside the main container and with the hermetic surface of the glass and internally attached with its upper part of the main container, connected to the lid in which it is made with the inlet pipes and gas outlet.