Method for adjusting gradient of slope under anesthesia machine and breathing machine pressure control

Abstract

The invention discloses a method for adjusting gradient of a slope under anesthesia machine and breathing machine pressure control, which comprises the following steps of: (1) estimating the air resistance (R) value and the compliance (C) value of a patient by an R and C quick estimation technology in a control starting state; (2) in the suction starting process, calculating an average flow rate F in suction ascent time according to a formula F=Delta P / (E*Tramp+R); (3) setting an upper limit control flow rate in the time which is less than set suction time as F in a suction valve and expiration valve cooperative adjustment system; (4) regularly measuring the actual flow of a feedback valve output flow rate in the suction ascent time, and slowly increasing the valve output flow rate to the upper limit control flow rate F when the suction ascent time is in the set time and the valve output flow rate is less than the upper limit control flow rate F; and (5) eliminating control limit from the upper limit flow rate of the suction valve and expiration valve cooperative adjustment system and switching to suction valve and expiration valve cooperative pressure adjustment after the suction ascent time surpasses set ascent time.

Description

technical field [0001] The present invention provides a new method for solving the slope adjustment control of the anesthesia machine and ventilator under pressure control. The inspiratory rise time is adjusted according to the preset time to adjust the slope, so that precise pressure slope control can be realized. The invention belongs to the technical field of medical equipment manufacturing. Background technique [0002] In the control of anesthesia machines and ventilators, when the inspiratory control valve and the exhalation control valve are used to work together, it is difficult to effectively adjust the inspiratory rise time because the inspiratory rise time is fixed. [0003] At present, there are two main ways to adjust the inspiratory rise time on anesthesia machines and ventilators: [0004] 1. Use the mechanical structure to adjust the flow rate of the air supply to realize the adjustment of the inhalation rise time. The advantage of this method is that the c...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem of poor software adjustment rise time due to limited hardware resources in the prior art, and propose a method for adjusting the slope slope under the pressure control of anesthesia machines and ventilators. The required flow rate of the air rise time is used to ensure the accuracy of the inhalation rise time, and to eliminate the overshoot phenomenon that occurs when the inhalation pressure is adjusted.

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