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Method for controlling output oxygen concentration of breathing machine and method for calculating contribution value of input air source of breathing machine to oxygen output concentration

A control method and ventilator technology, which are applied to the calculation of the contribution value of the ventilator input gas source to the oxygen output concentration, and the control field of the ventilator output oxygen concentration, which can solve the problems of unable to achieve synchronous real-time adjustment, long adjustment period, and difficulty in control. , to achieve the effect of improving rescue speed and efficiency, reducing debugging time and saving oxygen concentration measuring devices

Pending Publication Date: 2021-08-13
泰州市久信医疗科技有限公司
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Problems solved by technology

[0005] However, since the detection uses an electrochemical oxygen concentration sensor, it takes several cycles to approximately reflect the current oxygen concentration, and cannot achieve synchronous real-time adjustment. The adjustment cycle is long and the accuracy is low. In the process of adjusting the oxygen concentration, it often leads to The change of tidal volume requires proper detection, feedback, and adjustment of tidal volume. The adjustment of tidal volume must be taken into account during the entire oxygen concentration adjustment process. This method of control is quite difficult, and it often takes several cycles or even Longer, in order to make the tidal volume and oxygen concentration within the specified range, meet the set requirements

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  • Method for controlling output oxygen concentration of breathing machine and method for calculating contribution value of input air source of breathing machine to oxygen output concentration
  • Method for controlling output oxygen concentration of breathing machine and method for calculating contribution value of input air source of breathing machine to oxygen output concentration
  • Method for controlling output oxygen concentration of breathing machine and method for calculating contribution value of input air source of breathing machine to oxygen output concentration

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[0055] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0056] In the description of the present invention, it should be understood that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right" etc. are based on the attached The orientation or positional relationship shown in the figure is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the referred combination or element must have a specific orientation, be constructed and operated in a spec...

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Abstract

The invention discloses a method for controlling output oxygen concentration of a breathing machine. Respective final tidal volume and opening time of two proportional valves can be calculated according to the set tidal volume and oxygen concentration integrally output by the breathing machine and respective oxygen concentration and inspiration time of two paths of input gases, and according to the detection and feedback of the tidal volume, the error between the output tidal volume of different proportional valves and the calculated value are finely adjusted until the output tidal volume of each proportional valve can accord with the calculated value. Therefore, the output gas of the breathing machine can meet the set output oxygen concentration without adopting oxygen concentration detection and feedback, a high-precision proportional valve is not needed, the input pressures of the proportional valves do not need to be adjusted to be the same to ensure the output consistency of all the proportional valves, the debugging time when the breathing machine is used is shortened, the rescue speed and efficiency are improved, and the product cost is reduced.

Description

technical field [0001] The invention relates to the technical field, in particular to a method for controlling the output oxygen concentration of a ventilator and a calculation method for the contribution value of the input gas source of the ventilator to the oxygen output concentration. Background technique [0002] At present, medical ventilators are divided into therapeutic ventilators and emergency ventilators, and their methods of controlling the output oxygen concentration are also different. [0003] Therapeutic ventilators are generally equipped with air compressors. In this way, this type of ventilator has two air sources, one is oxygen and the other is air, which can widen the adjustment range of oxygen concentration, which can reach 21% to 100%. %. After the oxygen source and the air source, a constant pressure valve will be configured respectively, and a high-precision proportional valve will be configured after each constant pressure valve. In order to achieve ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M16/10
CPCA61M16/1005A61M16/0003A61M16/022A61M2016/1025A61M2016/0033
Inventor 常俊黄卫东
Owner 泰州市久信医疗科技有限公司
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