Multi-wavelength liver reserve function detection instrument and ICG (indocyanine green) concentration detection method

Abstract

The invention relates to a multi-wavelength liver reserve function detection instrument and an ICG (indocyanine green) concentration detection method. The detection instrument comprises an embedded microprocessor, a light source driving circuit, a multi-wavelength light-emitting light source, a photoelectric detector, a signal processing circuit, a liquid crystal display, a data memory, a printer and a PC (personal computer) or a browser, wherein the PC or the browser is externally connected. The detection instrument is characterized in that the embedded microprocessor is respectively connected with the power source driving circuit, the signal processing circuit, the liquid crystal display, an SD (secure digital) card, the printer and the PC or the browser; the multi-wavelength light-emitting light source is connected with the light source driving circuit; and the photoelectrical detector is connected with the signal processing circuit. The multi-wavelength liver reserve function detection instrument has the advantages that the changes of arteries, veins and tissues in the pulsation process and the effect on signals by scattering can be simultaneously calculated, and an ICG concentration value, a ICG curve, oxygen saturation degrees of arteries and veins, and other liver function parameters can be obtained, so the detection precision of the ICG concentration and the like can be improved, and the anti-vibration performance is good.

Description

technical field [0001] The invention relates to medical detection equipment, in particular to a multi-wavelength liver reserve function detector and a method for detecting ICG concentration. Background technique [0002] The liver is the hub of human metabolism, and the judgment of liver function damage and reserve function has always been a hot spot of concern. Accurate evaluation of the degree of liver damage and reserve function before liver surgery is extremely important for the safety of clinical anesthesia in patients with liver cirrhosis. Correct assessment of liver reserve function before operation and a reasonable amount of liver resection during operation are important measures to avoid postoperative liver failure. [0003] The determination of liver reserve function is an important and popular research topic in liver surgery in recent years. Scholars from various countries have researched and developed many effective evaluation methods, such as: indocyanine green...

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Problems solved by technology

[0005] The existing dual-wavelength pulse dye density method only considers the absorbance change caused by the transmission absorption caused by arterial pulsation; some researchers also consider the change of arterial blood oxygen saturation, that is, the arterial blood oxygen saturation is regarded as a variable rather than a constant. A three-wavelength approach to eliminate the effects of arterial oxygen saturation is proposed

However, because only the changes in arterial pulsation are considered, the influence of venous pulsation changes and tissue pulsation changes, and the influence of scattering are not considered, so the reliability and measurement accuracy are not enough, and the measurement is not accurate enough.

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