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发明授权
CN106456029B 用于无创地确定对象的红细胞比容值的设备和方法 有权

用于无创地确定对象的红细胞比容值的设备和方法
摘要：
本发明涉及用于无创地确定对象的红细胞比容值的设备和方法。所述设备包括：光源(22、23)，其用于将光发射到所述对象的皮肤区域上，所述光包括在500nm与1000nm之间的第一波长范围中的第一波长处的第一光以及在1000nm与2000nm之间的第二波长范围中的第二波长处的第二光；反射探测器(24)，其用于响应于所述光源的光照射来探测从所述对象的所述皮肤区域反射的光；透射探测器(25)，其用于响应于所述光源的光照射来探测透射通过所述对象的所述皮肤区域的光；处理单元(31)，其用于针对由所述反射探测器(24)和所述透射探测器(25)探测到的光来导出针对所述第一波长和所述第二波长的体积描记PPG信号；以及分析单元(32)，其用于根据所述PPG信号来导出所述对象的红细胞比容值。
摘要（英）：

The present invention relates to a device and method for noninvasively determining the hematocrit value of a subject. The device comprises a light source (22, 23) for emitting light onto a skin area of the subject, said light comprising first light at a first wavelength in a first wavelength range between 500 and 1000 nm and second light at a second wavelength in a second wavelength range between 1000 and 2000 nm, a reflection detector (24) for detecting light reflected from said skin area of the subject in response to light illumination by said light source, a transmission detector (25) for detecting light transmitted through said skin area of the subject in response to light illumination by said light source, a processing unit (31) for deriving plethysmography, PPG, signals for said first and second wavelengths from the light detected by said reflection detector (24) and said transmission detector (25), and an analysis unit (32) for determining the hematocrit value of the subject from said PPG signals.

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