公开(公告)号：US20090318787A1

公开(公告)日：2009-12-24

申请号：US12486843

申请日：2009-06-18

申请人： Takuo AOYAGI ,  Michio KANEMOTO ,  Masayoshi FUSE ,  Teiji UKAWA

发明人： Takuo AOYAGI ,  Michio KANEMOTO ,  Masayoshi FUSE ,  Teiji UKAWA

IPC分类号： A61B5/1455

CPC分类号： A61B5/7207 ,  A61B5/1455

摘要： A pulse oximetry includes: irradiating living tissue with a plurality of light beams of different wavelengths; receiving the light beams transmitted through or reflected from the living tissue and converting the received light beams to electric signals which correspond to the different wavelengths; time-segmenting time series data of the electric signals; calculating, with respect to each of the segmented time series data of the electric signals, a slope value of a regression line between each two of the electric signals; calculating SaO2 based on the slope value of each of the segmented time series data of the electric signals; constructing a histogram of SaO2 for each predetermined number of time segments; and obtaining a mode value from the histogram as SpO2 to be output of the pulse oximetry.

摘要翻译： 脉搏血氧测定法包括：用多个不同波长的光束照射生物体组织; 接收通过生物体组织传播或反射的光束，并将接收的光束转换成对应于不同波长的电信号; 时间分段电信号的时间序列数据; 针对电信号的每个分段时间序列数据计算每个两个电信号之间的回归线的斜率值; 根据电信号分段时间序列数据的斜率值计算SaO2; 为每个预定数量的时间段构建SaO2的直方图; 并且从直方图获得作为脉搏血氧饱和度的SpO2的模式值。