Ventilator air leakage detection method, device, storage medium and computer equipment

Abstract

The invention relates to a method and device for detecting the air leakage of a ventilator, a storage medium and a computer device. The method comprises: acquiring a pressure parameter of the ventilator and a flow rate value monitored by the ventilator, and calculating basic air leakage by according to the pressure parameter and a preset basic air leakage fitting formula; acquiring the time when the flow rate value is equal to the basic air leakage to obtain a time threshold; according to the flow rate value, the basic air leakage and the time threshold, performing integral operation, and obtaining an air leakage ratio according to an integral operation result; and calculating the air leakage of the ventilator based on the basic air leakage and the air leakage ratio. The air leakage ratiois calculated according to a relationship between the flow rate value monitored by the ventilator in real time and the basic air leakage so that the air leakage ratio can be updated timely. Thus, theupdate lag of the air leakage is avoided, and the accurate estimation of the air leakage of the ventilator is improved.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a method, device, storage medium and computer equipment for detecting air leakage of a ventilator. Background technique [0002] The trigger sensitivity of the non-invasive ventilator is related to the user's comfort and therapeutic effect. If the trigger sensitivity is increased, breathing will be easy but easy to cause dependence. If the trigger sensitivity is decreased, breathing will be laborious, but it can exercise the breathing muscles, so it has different applications in different scenarios. . How to accurately estimate the amount of air leakage and achieve the purpose of adjusting the trigger sensitivity of the ventilator is always a key technical point, and it is also a difficult point. Due to the ubiquity of unintentional air leaks and the inability to predict where unintentional air leaks occur, non-invasive ventilators cannot be equipped with sensors to meas...

AI Technical Summary

Problems solved by technology

Since the data is accumulated and then calculated at intervals, this calculation will produce a periodic effect. The ratio of the total flow rate to the root mean square of the pressure parameter value will be updated every cycle. When the leakage rate changes drastically time, it will cause a lag in the update of the ratio, resulting in a lag in the update of the leakage amount

The traditional method of estimating the leak volume of ventilators has the disadvantage of low estimation accuracy

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