External auditory canal imbedded cochlea blood oxygen saturation detector

Abstract

The invention relates to a cochlea blood oxygen saturation detector with an embedded external auditory canal. The end part of the elastic earplug is provided with a through hole; the first and second reflective sensor probes and the photodiode in the elastic earplug face the through hole; wherein the first controller controls red light of the first reflective sensor probe and infrared light of the second reflective sensor probe to emit light waves to a middle ear indoor cochlea bottom ring according to time points, and PPG light waves reflected back by arterial blood are collected and subjected to photoelectric signal conversion through the photodiode and signal amplification and signal filtering are conducted on the converted PPG electric signal to obtain a PPG standard signal; meanwhile, the second controller obtains red light absorption coefficients of HbO2 and Hb in the arterial blood when the incident light is red light based on the first red light PPG standard signal and the second red light PPG standard signal, obtains infrared light absorption coefficients of HbO2 and Hb in the arterial blood when the incident light is infrared light based on the first infrared light PPG standard signal and the second infrared light PPG standard signal, thereby calculating the oxyhemoglobin saturation value.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a cochlear microcirculation blood oxygen saturation detector implanted in the external auditory canal. Background technique [0002] Vascular disease is one of the common pathogenic factors of sudden deafness, including labyrinth and cochlear artery thrombosis, insufficient blood supply causing cochlear local microcirculation disturbance, and low blood oxygen saturation. Because the labyrinthine artery is a terminal branch, the current clinical examination methods are still unable to effectively judge its pathological state. Even if the vertebral-basilar artery DSA examination is passed, the equipment requirements are high, the technique is difficult, and there are risks of infection after puncture and vascular embolism. The increase makes it unable to be effectively popularized, and it is limited to scientific research. Moreover, the existing near-infrared spectrum prob...

AI Technical Summary

Problems solved by technology

Because the labyrinthine artery is a terminal branch, the current clinical examination methods are still unable to effectively judge its pathological state. Even if the vertebral-basilar artery DSA examination is passed, the equipment requirements are high, the technique is difficult, and there are risks of infection after puncture and vascular embolism. Elevated so that it cannot be effectively popularized and is limited to scientific research

Moreover, the existing near-infrared spectrum probe cannot enter the external auditory canal for monitoring, and cannot grasp the inner ear microcirculation of patients with sudden deafness in real time

Images