Detection device and detection method based on blood content in double-wave-length detection liquid

Abstract

The invention relates to the technical field of blood online detection, in particular to a detection device and detection method based on the blood content in double-wave-length detection liquid. According to the detection method, by using different light absorption degrees of hemoglobin on different wave lengths, infrared light and green-yellow light are selected to alternately irradiate liquid to be tested; the transmission light intensity of light with different wave lengths after passing through the liquid to be tested is determined; the relative value of the transmission light intensity is calculated, and the sizes of the relative value and the set value are compared, so that whether the blood leakage occurs or not is judged. The detection method is simple; the influence of the environment conditions such as the temperature on the detection result can be eliminated; the accuracy of the judging result is high. The detection device is correspondingly provided with different light incident openings and different light transmission openings for light with different wave lengths, and is correspondingly provided with different photoelectric detectors; the goal that the light with different wave lengths are emitted, transmitted and detected through different light paths; interference between different light paths can be avoided.

Description

technical field [0001] The invention relates to the technical field of blood online detection, in particular to a detection device and a detection method for detecting blood content in liquid based on dual wavelengths. Background technique [0002] Medical equipment such as hemofiltration devices and dialysis machines use hemoconcentrators to filter out target components and reinfuse blood back into the human body. During this process, if the permeable membrane in the hemoconcentrator is damaged, blood will be lost, which is harmful to the health of the patient. threatening. Therefore, it is usually necessary to detect whether there is blood in the filtrate, so as to find out whether there is blood leakage in time, and take necessary measures in time to prevent the blood loss of the patient. Since when the composition of the liquid changes, the absorbance of light will also change accordingly. Based on this principle, there is currently a method of irradiating the filtrate ...

AI Technical Summary

Problems solved by technology

Since when the composition of the liquid changes, the absorbance of light will also change accordingly. Based on this principle, there is currently a method of irradiating the filtrate to be detected by emitting light waves, and then detecting the absorbance of the filtrate to the emitted light to judge Whether there is blood leakage, but the current detection settings can only emit light waves of one wavelength, and use the absorbance of a single wavelength for detection. The detection results are easily affected by the detection environment such as temperature, resulting in inaccurate detection results

Images