Breathing machine control method and breathing machine apply control method

Abstract

The invention discloses a breathing machine control method and a breathing machine applying the control method. The breathing machine comprises a flow sensor, a pressure sensor, a microcontroller, a motor power amplifier and a blower. The breathing machine adopts a breathing synchronization pressure control method; particularly, the flow sensor detects the change in the flow of a pipeline, an expiration state and an inspiration state of a patient are judged according to a set flow threshold; and further, a preset pressure level is selected for switching according to the breathing state. Generally, when inspiration is converted into expiration in an air path system, man-machine confrontation is caused due to air accumulation at a nasal mask end. Therefore, a deviation between a set inspiration duration and a forecast duration serves as a time stamp of the beginning of the expiration after adjustment. The lower expiratory pressure is selected in advance, so that the pressure can be released timely, the man-machine confrontation is eliminated, and the man-machine synchronism is improved. The control mode meets breathing physiology requirements of people, and the breathing comfort and effectiveness of the patient are guaranteed.

Description

technical field [0001] The invention relates to the technical field of mechanical ventilation control of a medical device ventilator, and more specifically, relates to a ventilator control method for improving human-machine synchronization and a bilevel positive pressure ventilator applying the control method. Background technique [0002] Synchronous air supply control between the ventilator and human breathing means that the air supply of the ventilator is consistent with the patient's breathing demand, that is, the air supply cycle of the ventilator (inhalation start time, inhalation duration, inhalation and exhalation switching time and the duration of exhalation) and the intensity of assistance must be consistent with the respiratory cycle of the patient's respiratory demand and the degree of central inspiratory demand, otherwise there will be mutual influence between the patient and the ventilator, and the man-machine will be out of sync, which will increase the work of...

AI Technical Summary

Problems solved by technology

[0002] Synchronous air supply control between the ventilator and human breathing means that the air supply of the ventilator is consistent with the patient's breathing demand, that is, the air supply cycle of the ventilator (inhalation start time, inhalation duration, inhalation and exhalation switching time and the duration of exhalation) and the intensity of assistance must be consistent with the respiratory cycle of the patient's respiratory demand and the degree of central inspiratory demand, otherwise there will be mutual influence between the patient and the ventilator, and the man-machine will be out of sync, which will increase the work of breathing for the patient , Respiratory muscle damage, reduction of adjuvant therapy effect, exacerbation of patient's dyspnea, etc.

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