Method for adaptively adjusting buck-boost speed, application thereof and respiratory support equipment

Abstract

The invention provides a method for adaptively adjusting buck-boost speed, application thereof and respiratory support equipment. The method for adaptively adjusting buck-boost speed comprises the steps of measuring initial buck-boost speed V0 and buck-boost time T0 under the conditions of initial air resistance R0 and compliance C0 of a user, wherein according to the condition that the respiratory support equipment is in a treatment state, a processor obtains the actual buck-boost time T1 of the user, so that the buck-boost time difference Td that is equal to T1-T0 is obtained, then the processor measures whether |Td| / T0 is smaller than X% or not, and if not, performing buck-boost processing at a buck-boost speed of V1 that is equal to V-M * V0 in the next respiratory cycle of the user, and repeating the cycle until the condition that |Td| / T0 is smaller than X% is met. Therefore, it is guaranteed that the pressure maintaining time of a pressure curve platform is long, and the user experience is good.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a method for self-adaptive adjustment of buck-boost speed and its application, and respiratory support equipment. Background technique [0002] When the respiratory support equipment is working, the user needs to provide high pressure when inhaling, and low pressure when exhaling. The speed of rising from low pressure to high pressure is the boosting speed. The shorter the time. In the prior art (CN108310563 a kind of respiratory support equipment), the boosting speed is adjusted by manually setting different gears, usually 1 to 6 gears are adjustable, but it is usually difficult to achieve the best fixed 6 gears The degree of adaptation, and repeated adjustments are required to find a more suitable boost gear. [0003] When users use respiratory support equipment, due to individual differences, some users need to increase the pressure quickly, and some users cannot tol...

AI Technical Summary

Problems solved by technology

In the prior art (CN108310563 a kind of respiratory support equipment), the boosting speed is adjusted by manually setting different gears, usually 1 to 6 gears are adjustable, but it is usually difficult to achieve the best fixed 6 gears The degree of adaptation, and repeated adjustments are required to find a more suitable boost gear

[0003] When users use respiratory support equipment, due to individual differences, some users need to increase the pressure quickly, and some users cannot tolerate rapid pressure increase. A fixed buck-boost speed, no matter how the user’s air resistance, compliance and other respiratory mechanical parameters change, the ventilator will adjust the buck-boost according to the same parameters, which will make the patient’s breathing uncomfortable and not conducive to the patient’s recovery

[0004] Traditionally, when the user's respiratory mechanical parameters change, it will inevitably affect the actual time-consuming step-up and down, and even the pressure may not reach the expected value.

For example: the air resistance of the user increases from 5cmH2O to 20cmH2O. At this time, if the parameters of the ventilator are constant, the pressure change will inevitably slow down. It used to be possible to complete the pressure change in 200ms, but now it may take 400ms or even longer. What follows is the change of the pressure waveform, shortening the platform pressure maintenance time, and degrading the user experience, such as figure 1 as shown, figure 1 The solid line in the middle is the original pressure change curve, and the dotted line is the pressure change curve after the air resistance is changed. It can be seen from the figure that the dotted line represents the pressure curve, the plateau pressure is significantly reduced, and the pressure and pressure rise time is obviously elongated.

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