Method and application of ventilator triggering inspiration

Abstract

The invention provides a breathing-machine inspiration triggering method and application. The method includes the following steps that 1), flow of a breathing-machine mask end is collected, and a real-time flow value xi after filter is obtained; 2), the real-time flow value xi obtained in the step 1) is subjected to average processing, and an average flow value f is obtained; 3) the average flow value f obtained in the step 2) is solved, and a graph with protruding points is obtained; 4), the slopes between the protruding points in the step 3) are calculated, the slopes are compared, then perpendicular throws between the protruding points of the slopes are calculated, whether the perpendicular throws are over than 3LPM or not is judged, inspiration triggering characteristics are further obtained, and a breathing machine is triggered to provide inspiration pressure. By means of the breathing-machine inspiration triggering method, the erroneous judgment condition of the breathing machinecan be reduced, dependency of calculation of the air leakage in the prior art is avoided, the breathing condition of patients can be rapidly and accurately judged, inspiration is triggered, judgmentdelay is avoided, or the problem caused in advance is solved, and the man-machine synchronization capacity is improved while the comfortable performance of the patients is improved.

Description

technical field [0001] The invention belongs to the technical field of medical equipment, and in particular relates to a method and application of a ventilator triggering inhalation. Background technique [0002] When the ventilator collects flow and pressure, it usually collects discrete points at a certain frequency. These points are affected by power frequency interference, so there is a certain amount of noise, so that the curve formed by the collected data points presents a The characteristics of up and down fluctuations, if the interference is very strong at a certain moment, then there will be pulsed interference. If the distinction is not strictly made, it will be easy to think that the flow rate is rising sharply, which is in line with the characteristics of the human body's autonomous inhalation flow rate, so it is easy to cause machine misjudgment. [0003] The technology used now usually calculates the real-time air leakage, and then judges after the flow rate r...

AI Technical Summary

Problems solved by technology

The existing technology has a strong dependence on the accuracy of the calculation of the leakage volume. Since the leakage volume of the non-invasive ventilator can only be estimated, the timeliness and accuracy are usually compromised. In this way, the real-time performance when triggered and accuracy will suffer

At the same time, because it is necessary to wait for the flow rate to exceed the leakage amount before starting to judge, there is a certain delay problem

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