Breathing machine inspiration detection method and device and computer readable storage medium

By collecting and processing pressure and flow data during the respiratory cycle in the ventilator, and calculating the virtual flow baseline and change rate, the problem of delay and low accuracy in inspiratory detection is solved, and the sensitivity and accuracy of inspiratory detection are improved.

CN114404753AActive Publication Date: 2022-04-29HUNAN BIYANG MEDICAL TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HUNAN BIYANG MEDICAL TECH CO LTD
Filing Date
2022-01-24
Publication Date
2022-04-29

AI Technical Summary

Technical Problem

Existing ventilators have problems with delay and low detection accuracy in inspiratory detection, resulting in insufficient sensitivity in inspiratory detection, especially when the active inhalation intensity is weak and the detection delay is serious.

Method used

By collecting pressure and flow data during the respiratory cycle, the target flow baseline is calculated using the preset fitting formula, and the inhalation triggerable state is determined based on the virtual flow baseline, and the inhalation is accurately determined based on the virtual inspiratory flow change rate and the preset threshold. Improve detection sensitivity.

Benefits of technology

It effectively reduces the delay of inspiratory detection, improves the sensitivity of inspiratory detection, reduces the difference between detected inhalation and actual inhalation, and enhances the ventilator's responsiveness to the inspiratory state.

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Abstract

The embodiment of the invention provides a breathing machine inspiration detection method and device and a computer readable storage medium, and the method comprises the steps: collecting first pressure data and first flow data in a current breathing period, and calculating a target flow baseline according to the first pressure data, the first flow data and a preset fitting formula; calculating a virtual traffic baseline according to the target traffic baseline and the first traffic data; if it is judged that the inspiration triggering state is not reached or the virtual inspiration flow change rate in the inspiration triggering state is smaller than a preset flow change threshold value, second pressure data and second flow data of the next respiratory cycle are continuously collected, and the virtual inspiration flow change rate is calculated; and judging that inspiration is detected until the detected virtual inspiration flow change rate is greater than or equal to the preset flow change threshold value. According to the invention, the phenomena of inspiration detection delay, group delay and the like can be avoided, the difference between detected inspiration and actual inspiration is reduced, and the sensitivity of inspiration detection is improved.
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