Air and oxygen mixer for portable breathing machine and control method of air and oxygen mixer

A ventilator, portable technology, applied in the direction of ventilators, etc., can solve the problem of low accuracy of oxygen content, achieve the effect of precise control and reduce complexity

Pending Publication Date: 2022-05-31
SHANDONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the above problems, the present invention proposes an air-oxygen mixer for a portable ventilator and a control method thereof. The present invention does not need an external high-pressure air source, and the oxygen is provided by a portable oxygen bottle, and adopts airbag mixed gas and mass flow rate Meter and proportional control valve to control the oxygen content rate of the gas in the airbag, making the control of the oxygen content rate more precise, and solving the problem of low accuracy of the oxygen content rate of the oxygen flow regulating air-oxygen mixer

Method used

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  • Air and oxygen mixer for portable breathing machine and control method of air and oxygen mixer
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  • Air and oxygen mixer for portable breathing machine and control method of air and oxygen mixer

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Embodiment Construction

[0037] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0038] It should be noted that the following detailed description is exemplary and intended to provide further explanation of the present invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

[0039] It should be noted that the terminology used here is only for describing specific embodiments, and is not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinations thereof.

[0040] Su...

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Abstract

The invention provides an air and oxygen mixer for a portable breathing machine and a control method thereof.The air and oxygen mixer comprises an air bag, an air inlet branch, an oxygen inlet branch, a controller and an extrusion mechanism, an air inlet and an air outlet are formed in the air bag, the air inlet branch and the oxygen inlet branch are used for conveying air and oxygen to the air inlet respectively, and the air inlet branch and the oxygen inlet branch are used for conveying air and oxygen to the air outlet respectively; the air inlet branch and the oxygen inlet branch are respectively provided with a flowmeter and a control valve which are respectively used for metering the flow of the corresponding entered fluid and controlling the on-off of the corresponding branch; an extrusion mechanism capable of applying pressure to the air bag and changing the volume of the air bag is arranged outside the air bag; the controller is used for controlling the action of the control valve according to the information collected by the flow meter, so that the oxygen content in the air bag reaches a set value, and controlling the action of the extrusion mechanism, so that the mixed gas reaching the set value flows out from the air outlet at the optimal speed or flow, and the oxygen content control is more accurate.

Description

technical field [0001] The invention belongs to the technical field of air-oxygen mixers, and in particular relates to an air-oxygen mixer used for a portable ventilator and a control method thereof. Background technique [0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] The ventilator is an important life support equipment used by the hospital to treat patients with acute and chronic respiratory failure and acute respiratory distress syndrome (Acute Respiratory Distress Syndrome, ARDS), and the oxygen content rate of the gas delivered to the patient by the ventilator is a very important parameter. The air-oxygen mixer is the key core component to control the parameter of oxygen content in the ventilator. For ventilators of different forms or grades, the design or application of the air-oxygen mixer is also different. From the structure, there are oxygen collec...

Claims

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Application Information

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IPC IPC(8): A61M16/10A61M16/12A61M16/20
CPCA61M16/1005A61M16/125A61M16/203A61M16/0057A61M2016/003
Inventor 李可丁博智陈玉国徐峰王甲莉庞佼佼潘畅边圆李贻斌
Owner SHANDONG UNIV
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