WRISTWATCH-TYPE BLOOD SUGAR LEVEL WATCH DEVICE

WIPO Patent Application WO/2014/104036

A1

The present invention is used while being closely attached to a skin that is a part to be measured and includes a blood vessel of a user, and provided with a pulsed light emission means which performs light emission of a predetermined pulse, and a light reception means which has a plurality of light reception sensors each for converting reflected pulsed light obtained by pulsed light emitted from the pulsed light emission means being emitted to the skin and reflected into a voltage value, the pulsed light emission means generating a composite pulse composed of pulsed light of a first group having a wavelength other than that of near-infrared light and forming a staircase wave, and pulsed light of a second group having the wavelength of the near-infrared light and superimposed within the timing period of a peak portion of the top stair of the staircase wave, and provides a blood vessel detection method wherein in a reflected composite pulse detected by the light reception means, a reference value (h1) corresponding to a step of the staircase wave and a variation value (a4) that is the peak level of the reflected light are detected, and from the reference value (h1) and the variation value (a4), a blood vessel under the skin is detected.

YAMAGUCHI TAKASHI (JP)

PCT/JP2013/084534

July 03, 2014

December 24, 2013

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YAMAGUCHI TAKASHI (JP)

A61B5/1455; G01N21/35; G04G99/00

WO2011026986A1

2011-03-10

JP2009006037A	2009-01-15
JP2009011753A	2009-01-22
JP2003153881A	2003-05-27

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