Airflow output control method of breathing machine

Abstract

The invention discloses an airflow output control method of a breathing machine. The control method comprises the steps that through an integrated design of an excitation mode of airflow output, the setting of the ventilation frequency is instructed, the two different operation modes of instructed ventilation of the breathing machine and autonomic ventilation are integrated into a single ventilation rhythm control mechanism, the excitation mode of the airflow output is automatically selected and adjusted according to the needs of the breathing states of patients, there is no possibility of conflicts between a no-instruction ventilation and the autonomic ventilation, and ventilation parameters can be adjusted automatically when a temporary pause of breathing occurs to the autonomic ventilation, so as to ensure the ventilation safety of the patients and the reasonable setting of the parameters; meanwhile through a target tidal volume central processing unit, from the multiple angles of individualization and full security, the most direct indicators of ventilation support intensity for the target tidal volume are automatically adjusted to ideal levels which meet the needs of the patients according to the information feedback of airway power of the patients.

Description

technical field [0001] The present invention relates to a ventilator, more specifically it relates to a set of control methods for the airflow output of the ventilator. Background technique [0002] The basic working principle of the positive pressure artificial respirator is to form a controllable positive pressure height at the airway opening. At the beginning of inhalation, the ventilator forms a pressure difference between the positive pressure height established by the airway opening and the distal airway, which provides power for the airflow to enter the lungs, thereby expanding the chest and lungs and increasing the chest and lung capacity; while the airway Once the opening pressure is removed, the airway internal pressure also decreases, which means that the expiratory phase begins, and the expansion potential energy accumulated in the expanded chest and lung tissue during the inspiratory phase is converted into kinetic energy to drive the air in the lungs to be exha...

AI Technical Summary

Problems solved by technology

However, in this disclosed technical solution, there are still some imperfections. The excitation mode of the airflow output, that is, the selection and switching between the mandatory ventilation mode and the autonomous ventilation working mode requires manual judgment and operation; The power support intensity target tidal volume parameter is not completely suitable for the reasonable needs of the patient's airway condition, that is, to truly realize the work of the ventilator to comply with the patient's ventilation needs. Therefore, there is a feedback based on the dynamic information in the patient's airway during the ventilation process. Space for technical improvement to realize intelligent control of ventilator working data

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