×

NON-INVASIVE METHOD FOR ESTIMATING OF THE VARIATION OF THE GLUCOSE LEVEL IN THE BLOOD OF A PERSON AND APPARATUS FOR CARRYING OUT THE METHOD

  • US 20110224521A1
  • Filed: 08/26/2009
  • Published: 09/15/2011
  • Est. Priority Date: 08/29/2008
  • Status: Active Grant
First Claim
Patent Images

1. A noninvasive method for estimating of the variation of the glucose level Δ

  • G in the blood of a person within a time interval Δ

    t, comprising the following steps;

    placing a first tetrapolar electrode device in contact with the skin of the person overlying a portion of soft tissue including muscular fibers oriented parallel to the direction of the muscular fibers;

    placing a second tetrapolar electrode device in contact with the skin of said person overlying said portion of soft tissue oriented transverse to the direction of the muscular fibers;

    measuring for a time interval Δ

    t;

    with the first tetrapolar electron device the relative variation Δ

    C

    ,LF
    /C

    ,LF
    of the conductivity value C

    ,LF
    of said tissue parallel to the direction of the muscular fibers at a low frequency;

    with the second tetrapolar electron device the relative variation Δ

    C⊥

    ,LF/C⊥

    ,LF of the conductivity value C⊥

    ,LF of said tissue transverse to the direction of the muscular fibers at said low frequency;

    estimating Δ

    G as;


    0.0 if Δ

    C

    ,LF
    /C

    ,LF


    Δ

    C⊥

    ,LF/C⊥

    /LF
    +a if Δ

    C

    ,LF
    /C

    .LF
    >

    Δ

    C⊥

    ,LF/C⊥

    ,LF


    a if Δ

    C

    ,LF
    /C

    .LF
    <

    Δ

    C⊥

    ,LF/C⊥

    ,LF wherein;

    a is in the range of 0.15-1.0 μ

    M/1 sec;

    the low frequency is in the range of 1·

    ×

    104 Hz-5·

    ×

    104 Hz; and







    means “

    equal within a range of +/−

    2.5%-+/−

    7.5%”

    .

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×