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Published in:
2020 | OriginalPaper | Chapter
Stability Evaluation of a Tissue Oxygen Saturation Measurement System
Authors : Shao-Hung Lu, Tieh-Cheng Fu, Wei-Cheng Lu, Po-Hung Chang, Kang-Ping Lin, Cheng-Lun Tsai
Published in: Future Trends in Biomedical and Health Informatics and Cybersecurity in Medical Devices
Publisher: Springer International Publishing
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Abstract
Peripheral arterial occlusive disease has a high risk to occur in the lower extremity which causes low oxygen saturation level in muscle tissue, especially after exercise. A muscle tissue oxygen saturation measurement system was developed to detect the insufficient blood supply to lower limb.
The diffusive reflectance travelled though deep tissue is measured at two separated distance from the light sources. The individual differences in skin tissue would be cancelled out between these two measurements. Three near–infrared wavelengths are used to measure and calculate the oxygen saturation in deep muscle tissue. The stability of in vivo measurement is tested at different body postures in this study. The detection of the change in oxygen saturation was also tested by an artery occlusion experiment at the lower extremity. The results match the general physiological condition and the reliability of the system is confirmed.