Online synchronous expectoration method and system

Abstract

The invention relates to an online synchronous expectoration method. The method comprises the following steps: S1, collecting airway pressure; S2, extracting the ventilation characteristics in a non-expectoration time interval; S3, identifying a pressure drop mutational site in an expectoration time interval; and S4, determining whether the pressure drop mutational site in the S3 is matched with the ventilation characteristics in the S2, triggering expectoration if so, otherwise not triggering expectoration. The invention further correspondingly provides an online synchronous expectoration system. The system comprises an expectoration pipeline, wherein the expectoration pipeline is provided with a connector; three ends of the connector are respectively connected to a respirator, a patientand a cough assist; and the cough assist can be used for detecting the airway pressure in the connector, and whether expectoration of the cough assist is triggered or not is controlled based on the pressure in the airway.

Description

technical field [0001] The present invention relates to the field of coughing up sputum, and more specifically, to an online synchronous method and system for coughing up sputum. Background technique [0002] Cough is a physiological mechanism for normal people to clear respiratory airway secretions. However, for some patients with cough dysfunction diseases, such as patients with neuromuscular diseases with reduced cough force and patients with mechanical ventilation intubation, it becomes very necessary to use some kind of external force to clear airway secretions. [0003] A mechanical inflation-exhaust (MI-E) device, commonly known as an expectorator, is a well-known device used to assist patients with an ineffective cough to clear their airways of noxious secretions. This device simulates the coughing physiological mechanism of normal people, and controls the pipeline connected to the patient (mask connection end, mouthpiece connection end, or endotracheal tube connect...

AI Technical Summary

Problems solved by technology

[0012] (3) There is a bottleneck in the performance of the differential pressure flow sensor itself: the monitoring of the low flow section is inaccurate, so relying on the flow information to judge the inhalation-exhalation switching is not sensitive enough;

[0013] (4) The differential pressure flow sensor is prone to drift due to environmental changes, especially the water vapor in the ventilation pipeline and patient secretions can easily cause the complete failure of the flow sensor monitoring. Once the flow sensor information drifts or fails, it will Causes wrong sputum trigger judgment

[0014] In short, using multiple sensors to judge the timing of online expectoration has the disadvantages of increasing system complexity and increasing the risk of system use

Images