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The evaluation of medical LED lighting sensors is mostly based on their operability and biological adaptability. Biological adaptability is the primary factor in ensuring that patients feel comfortable and natural, which refers to the degree to which it neither affects nor is influenced by the human body. For example, since operational performance may decrease due to environmental factors, the ability of devices such as chemical sensors to resist human interference without being affected becomes important. Due to continuous improvements in design and sealing, the biological adaptability has greatly improved in recent years Sensors have made significant progress in recent years, especially blood gas detection sensors. In order to meet the needs of doctors, it is now possible to monitor dielectrics in blood samples, such as K Na、Ca。  The CDI500 and AVL9180 systems have been commercialized and are capable of monitoring changes in electrolytes and their gases in the blood. For AVL, it is due to the synthesis of ion groups, voids, and fluorescent groups. The fluorescence intensity obtained by blue light excitation is adjusted based on the ionization products determined by the concentration of the analyte. Sensing, with the characteristics of miniaturization and flexibility, is particularly suitable for the field of stroke monitoring. Stroke is a type of cerebrovascular disease caused by a decrease in blood supply to the brain, mainly divided into two types: hemorrhagic stroke and atrophic stroke. For hemorrhagic stroke, as the name suggests, the decrease in blood flow is due to bleeding; Atrophic stroke, on the other hand, causes a decrease or interruption in blood flow due to vascular occlusion. If the interruption of blood supply to the brain caused by stroke lasts for a long time, brain cells will inevitably be damaged. Therefore, monitoring the condition of brain cells after a stroke becomes important. Neuromedical medication can only be effective in treating brain injuries when brain cells are still healthy.

The sensor continuously detects the CO2 pressure in the stomach (Fig 3), which is an important parameter for evaluating the degree of tissue oxidation and is currently under development. For a healthy human body, the level of CO2 in the stomach is equivalent to the level of CO2 in the blood. When there is a stroke or severe inflammation, the oxygen supply in the stomach will decrease, which greatly increases the concentration of CO2 in the stomach compared to CO2 in the blood. In the photoelectric measurement system, the CO2 sensitive layer gradually changes from blue to yellow as the CO2 concentration increases. Through an A/D conversion, it can be input into the computer for analysis. The measurement range is 0-140 hPa, with an accuracy of 2.7 hPa and a reaction time of less than 1 minute.

The application range of sensors in biomedicine is steadily expanding, and the latest sensors can be widely used in blood gas monitoring, oxidation measurement, atherosclerosis analysis, etc. Good results have been achieved in the experiment, and it can be mainly applied for online tracking and monitoring, such as gastric gas CO2 gas detection, radiation dose measurement, temperature and intensity monitoring, and pressure monitoring. Fiber Raman spectroscopy analysis and its sub micron sensing detection in micro fiber detectors are the development trend, and there will definitely be great progress in the future.