Method and device for identification and early warning of respiration wave form image

Abstract

The invention discloses a method and a device for identification and early warning of a respiration wave form image. A respiration wave form analysis module and an early warning function module, which are based on the digital image processing technology, are embedded in a respirator controller. The respiration wave form analysis module has individual adaptivity when monitoring respiratory conditions, and according to the characteristic, discrimination feature information can be extracted from a segment of the respiration wave form image and used as a discrimination basis of the respiratory conditions. The early warning function module can be used for the early warning of unusual respiratory conditions in an early stage, so that a nursing person can remove the unusual respiratory conditions in advance according to the early warning, and a dynamic change feature of the respiration wave form image can be extracted and used as a discrimination basis for judging whether current respiratory conditions tend to be the unusual respiratory conditions.

Description

technical field [0001] The invention relates to a positive pressure mechanical ventilation ventilator in the technical field of medical devices, and more specifically, to a method and device for recognizing and warning respiratory waveform images. Background technique [0002] The structural block diagram of the existing ventilator is shown in the accompanying drawing figure 1 As shown, its function is to provide respiratory support for patients with respiratory dysfunction. Its principle is to control the ventilator by detecting the ventilation flow, pressure and other information in the air circuit between the ventilator and the patient according to the set ventilation mode. The circulation mode of gas in the air circuit provides corresponding breathing support for the patient. [0003] attached figure 1 Among them, the air, oxygen, or air-oxygen mixed gas represented by the module 2, under the control of the controller 1, enters the air-oxygen mixer 3 according to the s...

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Problems solved by technology

[0007] (2) The function of the controller of the existing ventilator to monitor abnormal breathing conditions is relatively simple. Only by detecting parameters such as gas flow and pressure in the air circuit, it can be judged whether the current patient's breathing is abnormal. Threshold to judge abnormal ventilator, prone to misjudgment or missed judgment

[0008] (3) The upper and lower limits of the airway pressure monitored by the existing ventilator controller are fixed after setting, and the ventilator function of the patient may change. This fixed monitoring value increases the The possibility of man-machine confrontation during breathing (the actual effect of the airflow provided by the ventilator is not to assist the patient's spontaneous breathing, but to oppose its spontaneous breathing)

[0009] (4) The function of monitoring abnormal breathing conditions provided by the existing ventilator controller can only effectively monitor whether the pressure in the airway is higher than the set upper limit, lower limit, and abnormal conditions such as air leakage in the airway. Abnormal conditions such as excessive water, airway obstruction, phlegm in the patient's airway, and changes in the patient's respiratory compliance cannot be automatically judged. Only the guardian can manually analyze and judge the patient's respiratory condition based on the respiratory waveform image provided by the ventilator. , which requires the medical staff to have a fairly high professional level, and requires them to have the ability to quickly distinguish

[0010] (5) The alarm function of the existing ventilator is to alarm only after the abnormal breathing occurs, which increases the sense of urgency of the guardians when dealing with abnormal conditions, and also increases the discomfort of the patients

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