Zero calibration anomaly detection method and respiratory gas monitoring equipment

Abstract

The invention relates to the technical field of medical instruments, and particularly discloses a zero calibration anomaly detection method and respiratory gas monitoring equipment. The method is usedin respiratory gas monitoring equipment, and a gas path of the respiratory gas monitoring equipment comprises an atmosphere channel. The method comprises the steps of obtaining a zero calibration instruction; controlling a gas circuit of the respiratory gas monitoring equipment to be switched to an atmosphere channel according to the zero calibration instruction; acquiring gas path state information of the atmospheric channel; and determining whether the zero calibration condition of the respiratory gas monitoring equipment is abnormal or not according to the gas path state information. Whether the zero calibration condition of the equipment is abnormal or not can be judged only through the gas path state information, and the situation that the zero reference value is inaccurate due to abnormal zero calibration of the breathing gas monitoring equipment can be conveniently and rapidly eliminated so as to obtain the accurate zero reference value, so that inaccuracy of subsequent measurement results caused by use of abnormal zero reference values is avoided, and misleading of inappropriate operation of doctors is avoided.

Description

Technical field [0001] The present invention relates to the field of medical devices, and more particularly to zero zero extraction detection methods and respiratory gas monitoring equipment. Background technique [0002] Respiratory gas monitoring is mainly used to monitor physiological parameters related to patient respiratory vital signs, often involve breathing rate, exhaled CO 2 Concentration, inhalation CO 2 Concentration and waveform. Mainly monitoring the respiratory physiological parameters of the anesthesia patient in the operation or real-time monitoring of ICU patients, and gives medical staff in accordance with the test results, and makes corresponding adjustments in time. [0003] Co in exhaled gas 2 Concentration measurement as an example, based on spectral absorption of Langbert-Bill Law, ie CO 2 The absorption peak of the gas in the infrared spectrum is absorbed to the corresponding wavelength infrared light, and the absorption strength is positively correlated w...

AI Technical Summary

Problems solved by technology

If the zero reference value is obtained when the zero calibration is abnormal, the obtained zero reference value is inaccurate, and the real-time measurement results calculated with the zero reference value in the subsequent measurement process are also inaccurate, thus misleading the doctor to perform inappropriate operations. Affect the life safety of patients

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