Spectrophotometric blood glucose determination apparatus and determination method thereof
First Claim
1. A spectrophotometric blood glucose determination apparatus capable of measuring the concentration of glucose in blood, comprising:
- (1) near-infrared irradiating means for continuously dividing the wavelengths of near-infrared light in a wavelength range of 0.8 to 2.5 μ
m into fine portions and irradiating a subject of measurement therewith;
(2) photoelectric conversion means for receiving and photoelectrically converting the lights transmitted or reflected by said subject of measurement irradiated therewith by said near-infrared irradiating means; and
(3) glucose concentration computing means for determining the glucose concentration in the blood within said subject of measurement by analyzing the absorbance spectrum obtained on the basis of detection signals resulting from photoelectric conversion by said photoelectric conversion means.
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Abstract
To provide a portable blood glucose determination apparatus and a determination method for either invasive or non-invasive measurement of glucose concentration in blood by optical observation excelling in measuring accuracy and reproducibility.
A spectrophotometric blood glucose determination apparatus is an infra-red quantitative analysis instrument for measuring concentration of glucose in blood, provided with the following units numbered (1) through (3):
(1) a near-infrared irradiating unit for continuously dividing wavelengths of near-infrared light in a wavelength range of 0.8 to 2.5 μm into fine portions with acousto-optic tunable filter and irradiating the subject of measurement therewith;
(2) a photoelectric conversion unit for receiving and photoelectrically converting lights transmitted by the subject of measurement irradiated therewith by the near-infrared irradiating unit; and
(3) a glucose concentration computing unit for determining the glucose concentration in the blood within the subject of measurement by analyzing an absorbance spectrum obtained on the basis of detection signals resulting from photoelectric conversion by the photoelectric conversion unit,
and a spectrophotometric blood glucose determination method including each step using the above described each unit.
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Citations
18 Claims
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1. A spectrophotometric blood glucose determination apparatus capable of measuring the concentration of glucose in blood, comprising:
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(1) near-infrared irradiating means for continuously dividing the wavelengths of near-infrared light in a wavelength range of 0.8 to 2.5 μ
m into fine portions and irradiating a subject of measurement therewith;
(2) photoelectric conversion means for receiving and photoelectrically converting the lights transmitted or reflected by said subject of measurement irradiated therewith by said near-infrared irradiating means; and
(3) glucose concentration computing means for determining the glucose concentration in the blood within said subject of measurement by analyzing the absorbance spectrum obtained on the basis of detection signals resulting from photoelectric conversion by said photoelectric conversion means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A spectrophotometric blood glucose determination method permitting determination of a concentration of glucose in blood, comprising:
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(1) a near-infrared irradiating step of continuously dividing wavelengths of near-infrared light in a wavelength range of 0.8 to 2.5 μ
m into fine portions and irradiating a subject of measurement therewith;
(2) a photoelectric conversion step of receiving and photoelectrically converting the lights transmitted or reflected by said subject of measurement irradiated therewith at said near-infrared irradiating step; and
(3) a glucose concentration computing step of assessing the glucose concentration in the blood within said subject of measurement by analyzing and computing an absorbance spectrum obtained on the basis of detection signals resulting from photoelectric conversion at said photoelectric conversion step. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification