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Method for adjusting output oxygen concentration of breathing machine by utilizing venturi valve

An oxygen concentration and venturi technology, applied in respirator, drug equipment, other medical equipment, etc., can solve the problems of not easy operation and complicated adjustment method, and achieve easy operation, simple method and adjustable oxygen concentration. Effect

Inactive Publication Date: 2020-05-19
BEIJING AEROSPACE CHANGFENG CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current method is to use two high-pressure gases, oxygen and air, to pass through an air-oxygen mixing device, and adjust the oxygen concentration of the output gas by changing the ratio concentration of the two gases. The prerequisite is that there must be two high-pressure gases—oxygen and Air, the adjustment method is more complicated and not easy to operate

Method used

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  • Method for adjusting output oxygen concentration of breathing machine by utilizing venturi valve
  • Method for adjusting output oxygen concentration of breathing machine by utilizing venturi valve
  • Method for adjusting output oxygen concentration of breathing machine by utilizing venturi valve

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Embodiment Construction

[0013] figure 1 It is the schematic diagram of the gas circuit of the present invention. figure 1 Among them, there is a Venturi valve in the gas path, which includes an air inlet nozzle, an air inlet and an air outlet; high-pressure oxygen is input from the inlet nozzle, and when the high-pressure oxygen is ejected from the nozzle, negative pressure will be generated. The air inlet sucks air in the atmosphere and mixes it with oxygen, and the resulting mixed gas is output from the air outlet. A control device for adjusting the size of the air inlet is provided at the air inlet; through the air inlet control device, the size of the air inlet can be adjusted, thereby adjusting the amount of inhaled air, and then adjusting the oxygen concentration in the mixed gas.

[0014] In order to further illustrate the method of the present invention, an example of applying the method of the present invention will be described below.

[0015] figure 2 It is a structural principle diagr...

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Abstract

The invention provides a method for adjusting the output oxygen concentration of a breathing machine by utilizing a venturi valve. The venturi valve is arranged in an output gas path of the breathingmachine; the valve comprises a gas inlet nozzle, an air inlet and a gas outlet; and a control device for adjusting the size of the air inlet is arranged at the air inlet. High-pressure oxygen is inputthrough the gas inlet nozzle to generate negative pressure, and air in the atmosphere is sucked to generate mixed gas of air and oxygen. The size of the air inlet is adjusted through the control device to control the flow rate of the sucked air, so that the oxygen concentration of output gas is changed.

Description

technical field [0001] The invention belongs to the field of medical equipment manufacturing, and relates to a method for adjusting and controlling the output oxygen concentration of a medical ventilator. Background technique [0002] The ventilator is mainly used clinically to treat patients with respiratory failure. Its working principle is to use high-pressure gas to forcibly assist the patient to breathe. The oxygen concentration of the gas inhaled by the patient has a direct impact on the therapeutic effect, and it is of great significance to be able to adjust the oxygen concentration of the gas inhaled by the patient. The current method is to use two high-pressure gases, oxygen and air, to pass through an air-oxygen mixing device, and adjust the oxygen concentration of the output gas by changing the ratio of the two gases. The prerequisite is that there must be two high-pressure gases—oxygen and Air, the adjustment method is more complicated and not easy to operate. ...

Claims

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Application Information

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IPC IPC(8): A61M16/00A61M16/12A61M16/20
CPCA61M16/0012A61M16/127A61M16/201A61M2205/3331
Inventor 闫全国
Owner BEIJING AEROSPACE CHANGFENG CO LTD
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