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Method and apparatus for measuring blood sugar levels

  • US 20060079742A1
  • Filed: 01/10/2005
  • Published: 04/13/2006
  • Est. Priority Date: 09/29/2004
  • Status: Abandoned Application
First Claim
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1. A blood sugar level measurement apparatus comprising:

  • a heat amount measurement portion for measuring a plurality of temperatures deriving from a body surface and obtaining information that is used for calculating the amount of convective heat transfer and the amount of radiation heat transfer, both of which are related to the dissipation of heat from said body surface;

    an oxygen amount measurement portion for obtaining information relating to the blood oxygen amount, said oxygen amount measurement portion comprising a blood flow volume measurement portion for obtaining information relating to the blood flow volume, and an optical measurement portion for obtaining the hemoglobin concentration and the hemoglobin oxygen saturation in blood;

    an openable and closable cover with which said optical measurement portion can be covered;

    a cover open/close detection portion for detecting whether said cover is open or closed;

    a memory portion in which a relationship between parameters associated with said plurality of temperatures and said blood oxygen amount, and blood sugar levels is stored;

    a computation portion for converting a plurality of measurement values inputted from said heat amount measurement portion and said oxygen amount measurement portion into said parameters individually, and for computing a blood sugar level by applying said parameters to said relationship stored in said memory portion;

    a display portion for displaying the result calculated by said computation portion; and

    an optical sensor correction portion for correcting the output of said optical measurement portion, wherein;

    said blood flow volume measurement portion comprises a body-surface contact portion, a first temperature detector disposed adjacent to said body-surface contact portion, a second temperature detector for detecting the temperature at a location spaced apart from said body-surface contact portion, and a heat-conducting member connecting said body-surface contact portion and said second temperature detector, and wherein;

    said optical sensor correction portion comprises an optical correction check portion for calculating a correction value from the output of said optical measurement portion, and an optical correction portion for correcting the output of said optical measurement portion using the correction value calculated by said optical correction check portion.

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