The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 05, 2011
Filed:
Jul. 26, 2005
Akihide Kitamura, Chiba, JP;
Fumio Nomura, Chiba, JP;
Takashi Karatsu, Chiba, JP;
National University Corporation Chiba University, Chiba, JP;
Abstract
The objective of the present invention is to provide a method and instrument for measuring glucose concentration in blood using infrared spectroscopy. Glucose concentration in blood is measured based on an integrated value obtained by measuring an absorption spectrum that includes the wavenumber range of 1020-1040 cm, and by integrating the intensity of absorption of the wavenumber range of 1020-1040 cmwithin the absorption spectrum. Alternatively, a glucose concentration in blood is measured based on an integrated value through measuring an absorption spectrum including the wavenumber range of 1010-1050 cm; obtaining a second-derivative spectrum by calculating a second derivative of the absorption spectrum that includes the wavenumber range of 1010-1050 cmin the absorption spectrum; determining an integration range based on the second derivative spectrum; and then obtaining the integrated value by integrating the intensity of absorption based on this determined integration range.