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Impedance monitoring device for preventing urinary incontinence

  • US 5,103,835 A
  • Filed: 04/25/1991
  • Issued: 04/14/1992
  • Est. Priority Date: 05/02/1990
  • Status: Expired due to Term
First Claim
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1. A monitoring device for preventing urinary incontinence, comprising:

  • a high-frequency constant-current power supply adapted to supply a pair of terminals ,which are adopted to be positioned on the surface of a human body so that the current travels across the urinary bladder;

    a pair of sensing electrodes which are adapted to be positioned on the human body surface at positions on the path of the high-frequency electrical current flowing between the said pair of terminals;

    a high-frequency voltage signal detecting means which detects waves from a high-frequency voltage signal sensed by said pair of sensing electrodes;

    a DC component detecting means which detects the DC component of the signal detected by the high-frequency voltage signal detecting means;

    a variance component detecting means which detects the variance component of the signal detected by the high-frequency voltage signal detecting means;

    a variance-to-DC ratio computing means for computing the ratio between the DC component and the variance component; and

    a variance-to-DC ratio evaluating means for activating an informing means when the computed value of the variance-to-DC ratio has reached a predetermined threshold level indicative of a urinary volume at which a specific person feels desire to urinate.

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