Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
BLOOD ANALYZER
Document Type and Number:
WIPO Patent Application WO/2003/077761
Kind Code:
A1
Abstract:
A blood analyzer for measuring blood hemoglobin concentrations serving as indications in diagnosing diabetes or controlling blood glucose level. From characteristic curves showing the molar absorption coefficient ratios of three hemoglobin components including HbAlc-O2, Hb-O2 and Hb-CO, the wavelength at which the absorbance ratio of each component attains a peak or the wavelength at which the absorbance ratio of each component attains the maximum level is selected. Then the composition ratio of the hemoglobin components is calculated based on the molar absorption coefficients of the hemoglobin components at these wavelengths and the absorbances of a biological tissue at these wavelengths. Thus, the concentrations of the hemoglobin components are indicated non-invasively.

Inventors:
EGAWA SHUNJI (JP)
Application Number:
PCT/JP2003/003247
Publication Date:
September 25, 2003
Filing Date:
March 18, 2003
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
CITIZEN WATCH CO LTD (JP)
EGAWA SHUNJI (JP)
International Classes:
G01N33/72; A61B5/00; A61B5/145; A61B5/1455; G01N21/27; G01N21/35; G01N21/3577; G01N21/359; (IPC1-7): A61B5/145
Domestic Patent References:
WO2001016577A12001-03-08
Foreign References:
JP2001212114A2001-08-07
JP2002202258A2002-07-19
JP2002085385A2002-03-26
Attorney, Agent or Firm:
Watanabe, Kihei (Kanda Suda-cho 1-chome Chiyoda-ku, Tokyo, JP)
Download PDF: