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Blood sugar level measuring apparatus

  • US 7,215,983 B2
  • Filed: 06/30/2004
  • Issued: 05/08/2007
  • Est. Priority Date: 06/30/2004
  • Status: Active Grant
First Claim
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1. A blood sugar level measuring apparatus comprising:

  • a heat amount measurement portion for measuring a plurality of temperatures derived from a body surface and obtaining information used for calculating the amount of heat transferred by convection and the amount of heat transferred by radiation, both related to the dissipation of heat from said body surface;

    an oxygen amount measuring portion for obtaining information about blood oxygen amount;

    a storage portion for storing a relationship between parameters corresponding to said plurality of temperatures and blood oxygen amount and blood sugar levels;

    a calculating portion which converts a plurality of measurement values fed from said heat amount measuring portion and said oxygen amount measurement portion into said parameters, and which computes a blood sugar level by applying said parameters to said relationship stored in said storage portion;

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

    a warm-up control portion for conducting a warm-up, whereinsaid oxygen-amount measuring portion comprises a blood flow volume measuring portion for obtaining information about the volume of blood flow, and an optical measuring portion for obtaining hemoglobin concentration and hemoglobin oxygen saturation in blood,said blood flow volume measuring 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 position spaced away from said body-surface contact portion, and a heat-conducting member connecting said body-surface contact portion and said second temperature detector, andsaid warm-up control portion checks whether the temperature measured by said heat amount measuring portion or said blood flow volume measuring portion during said warm-up is in a predetermined temperature range.

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