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Body fluids monitor

  • US 6,125,297 A
  • Filed: 02/06/1998
  • Issued: 09/26/2000
  • Est. Priority Date: 02/06/1998
  • Status: Expired due to Fees
First Claim
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1. A process for determining a volume of whole body fluid in a subject, comprising the steps of:

  • applying a signal to a subject;

    increasing a frequency of the signal by predetermined increments;

    measuring an impedance and a resistance of the subject at each frequency increment;

    determining a total body frequency FT, wherein the total body frequency FT is the frequency at which the impedance decreases by a predefined percent over a predefined frequency interval;

    determining circuit components of a human body circuit model, wherein the circuit components comprise a total body impedance ZT, a total body resistance RT, an extra-cellular resistance RE, an intra-cellular resistance RI, a capacitance C, a self-inductance L, and a mutual-inductance M; and

    determining the volume of whole body fluid from the circuit components.

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