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Body water amount condition judging apparatus by multi-frequency bioelectric impedance measurement

  • US 20020022787A1
  • Filed: 08/01/2001
  • Published: 02/21/2002
  • Est. Priority Date: 08/01/2000
  • Status: Active Grant
First Claim
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1. A body water amount condition judging apparatus, in which at least two values selected from intra-cellular water resistance, extra-cellular water resistance, combined resistance of the intra-cellular and extra-cellular water resistance, and a ratio of intra-cellular and extra-cellular water are judging parameters for body water amount condition, comprising;

  • a multi-frequency bioelectric impedance measuring device;

    a calculating device;

    a reference value determining unit;

    a body water amount condition judging unit; and

    a display device;

    wherein, said multi-frequency bioelectric impedance measuring device supplies a plurality of alternating current of different frequencies to a body of a subject and measures a bioelectric impedance value, said calculating device calculates the values of each judging parameter based on the bioelectric impedance value measured, said reference value determining unit determines reference values of the same kind based on judging parameter values calculated prior to each judging parameter of the same kind calculated in the past, said body water amount condition judging unit judges body water amount condition by comparing each calculated judging parameter value with the determined judging parameters of the kind, and said display device displays the judging result of said body water amount condition so judged.

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