发明授权
US4714080A Method and apparatus for noninvasive monitoring of arterial blood oxygen saturation 失效
用于非侵入性监测动脉血氧饱和度的方法和装置

Method and apparatus for noninvasive monitoring of arterial blood oxygen
saturation
摘要:
A noninvasive optical oximeter for measuring oxygen saturation of arterial blood. A sample of blood is illuminated with light at two different wavelengths. Light reflected by the blood is sensed by a photodetector and an output signal is created in response thereto. The output signal is processed to form a quotient representing the AC components of the reflected light at each wavelength. The oxygen saturation of the blood is calculated by correlating this quotient with an oxygen saturation reference curve uniquely representative of the blood oxygen saturation characteristics of a particular individual.
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