Medical ventilator and method of continuously measuring airway resistance and compliance for medical ventilator

Abstract

The invention discloses a medical ventilator and a method of continuously measuring airway resistance and compliance for the medical ventilator. The medical ventilator comprises a pressure control device, the pressure control device is provided with an air source input port, an air flow control port and an air flow output port, and the air flow output port is connected with an air flow sensor and a pressure sensor that measures airway pressure of a patient; the medical ventilator employs an airway positive pressure ventilation mode, a high-frequency oscillatory pressure with adjustable amplitude, frequency and duration is added to the pressure level of the airway positive pressure ventilation mode, airway resistance and lung compliance of the respiratory system are measured through the high-frequency oscillatory pressure and flow, the airway resistance and the lung compliance are continuously monitored, and the medical ventilator and the method are used to measure respiratory resistance and compliance at the premise of not interfering normal respiratory cycle of a patient and provide continuous monitoring for the respiratory resistance and compliance. The medical ventilator and the method will help a doctor to set parameters of a mechanical ventilator such that ventilation state of a patient is adjusted in time and ventilation therapeutic efficiency of the ventilator is improved.

Description

technical field [0001] The invention relates to a medical breathing apparatus, in particular to a medical ventilator and a method for continuously measuring airway resistance and compliance thereof. Background technique [0002] In the existing clinical mechanical ventilation technology, including invasive and non-invasive positive pressure ventilation, in order to adopt appropriate airway pressure, flow rate and ventilation volume for patients, it is necessary to use special testing instruments or the experience of medical personnel to monitor the patient's respiratory tract before ventilation. resistance, etc. to be tested or estimated. During the ventilation process of the patient, real-time adjustment of the patient's breathing parameters cannot be performed by monitoring the patient's breathing resistance, etc., which may easily lead to excessively high or low airway pressure and ventilation volume. Excessive pressure can easily cause ventilation side effects such as a...

AI Technical Summary

Problems solved by technology

During the ventilation process of the patient, the respiratory parameters of the patient cannot be adjusted in real time by monitoring the respiratory resistance of the patient, which may easily lead to excessively high or low airway pressure and ventilation volume

Excessive pressure can easily cause ventilation side effects such as airway barotrauma in patients, while low pressure can easily cause hypoventilation in patients

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