发明名称 |
Apparatus for measuring hemoglobin |
摘要 |
Light of various wavelengths emitted from light sources and transmitted through vital tissues is converted by light sensors and current/voltage transducers, into electric signals. The signals are converted into digital values by an A/D converter. The light source emits light of a wavelength which can be optically absorbed by water. A computer obtains a ratio of variations of the digital values for each wavelength, and calculates the values of tissue terms and the hemoglobin concentration on the basis of the ratios. In the calculation, since tissue terms of the wavelengths have mutual constant relationships, an equation which is prepared so that there exists only one unknown in the tissue terms is used.
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申请公布号 |
US5720284(A) |
申请公布日期 |
1998.02.24 |
申请号 |
US19960623862 |
申请日期 |
1996.03.29 |
申请人 |
NIHON KOHDEN CORPORATION |
发明人 |
AOYAGI, TAKUO;FUSE, MASAYOSHI;KANEMOTO, MICHIO;XIE, CHENG TAI |
分类号 |
A61B5/00;G01N33/72;(IPC1-7):A61B5/00 |
主分类号 |
A61B5/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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