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Method for measuring the degree of edema and apparatus using the same

  • US 6,714,813 B2
  • Filed: 01/16/2001
  • Issued: 03/30/2004
  • Est. Priority Date: 01/21/2000
  • Status: Active Grant
First Claim
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1. An apparatus which is capable of measuring a degree of edema of a person characterized in that it comprises:

  • at least two pairs of electrodes to be put on selected locations in the body of the person;

    an alternating current supplying device which supplies alternating current to one pair of the electrodes;

    a voltage measuring device which measures the voltage appearing between the other pair of electrodes;

    an arithmetic unit which calculates impedance on the basis of the supplied alternating current and the determined voltage, and calculates an index value representing the degree of edema on the basis of the so calculated impedance; and

    an estimating device which determines the degree of edema the person has from the calculated index value of edema and a body weight or fat free mass of the person.

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