Non-invasive blood component value measuring instrument and method
First Claim
1. A non-invasive blood constituents measuring instrument comprising:
- a light source for irradiating light including plural waveforms to a living body;
a light detector to detect light transmitted through the living body or reflecting thereon;
a spectrum analyzer to which the output signal of the light detector is supplied and which analyzes spectrum of the light transmitted through the living body or reflected therefrom at different times;
a spectrum subtraction generator to generate spectrum subtraction from the spectrum of the light measured by the spectrum analyzer at different times; and
a blood constituents predictor into which the output data of the spectrum subtraction generator is input and which outputs the blood constituents.
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Accused Products
Abstract
A non-invasive blood constituents measuring instrument measures blood constituent values including blood glucose concentration in a living body. The instrument is composed of a light source 11 to irradiate a light containing plural wavelengths to a living body 13, a light detector 14 to detect the light transmitted through a living body or reflected thereon, an instantaneous spectrum analyzer 15 to analyze the light transmitted through the living body or reflected thereon at different times, a subtraction processor 18 to generate spectrum subtraction from the spectrum of the light at the different times measured by the spectrum analyzer 15, and a blood glucose concentration predictor 21 into which the output data of the subtraction processor 18 are input and which outputs a blood constituent value.
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Citations
25 Claims
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1. A non-invasive blood constituents measuring instrument comprising:
- a light source for irradiating light including plural waveforms to a living body;
a light detector to detect light transmitted through the living body or reflecting thereon;
a spectrum analyzer to which the output signal of the light detector is supplied and which analyzes spectrum of the light transmitted through the living body or reflected therefrom at different times;
a spectrum subtraction generator to generate spectrum subtraction from the spectrum of the light measured by the spectrum analyzer at different times; and
a blood constituents predictor into which the output data of the spectrum subtraction generator is input and which outputs the blood constituents. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- a light source for irradiating light including plural waveforms to a living body;
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9. A non-invasive blood glucose concentration measuring instrument comprising:
- a light source to irradiate a light containing plural wavelengths;
a light detector to detect the light transmitted through a living body or reflected therefrom;
a spectrum analyzer to which the output signal of the light detector is supplied and which analyzes spectrum of the light transmitted through the living body or reflected therefrom at different times;
a spectrum subtraction generator to generate spectrum subtraction from the spectrum of the light measured by the spectrum analyzer at different times; and
a blood glucose concentration predictor into which the output data of the spectrum subtraction generator is input and which outputs the blood glucose concentration. - View Dependent Claims (10, 11, 12, 13, 14, 15, 17, 18, 19)
- a light source to irradiate a light containing plural wavelengths;
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20. A method for non-invasively measuring blood constituents comprising the steps of:
- irradiating a light containing plural wavelengths to a living body;
detecting light transmitted through or reflected from the living body and converting it into an electric signal;
analyzing spectrum of the light transmitted through the living body or reflected therefrom at different times using the converted electric signal;
generating spectrum subtraction from the spectrum of the light at different times; and
predicting corresponding blood constituents from the spectrum subtraction. - View Dependent Claims (21, 22)
- irradiating a light containing plural wavelengths to a living body;
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23. A method for non-invasively measuring blood glucose concentrations comprising the steps of:
- irradiating a light containing plural wavelengths to a living body;
detecting light transmitted through or reflected from the living body and converting it into an electric signal;
analyzing spectrum of the light transmitted through the living body or reflected therefrom at different times using the converted electric signal;
generating spectrum subtraction from the spectrum of the light at the different times; and
predicting corresponding blood glucose concentration from the spectrum subtraction. - View Dependent Claims (24, 25)
- irradiating a light containing plural wavelengths to a living body;
Specification