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Biological tissue stimulator with adjustable high voltage power supply dependent upon load impedance

  • US 4,917,093 A
  • Filed: 06/12/1987
  • Issued: 04/17/1990
  • Est. Priority Date: 06/12/1987
  • Status: Expired due to Term
First Claim
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1. A biological tissue stimulator adapted to supply an electrical stimulation signal to a biological load, comprising:

  • a battery;

    a high voltage power supply operatively coupled to said battery and producing a high voltage signal;

    output means receiving said high voltage signal for supplying said electrical stimulation signal of a predetermined current amplitude;

    electrode means receiving said electrical stimulation signal and adapted to be coupled to biological tissue for delivering said electrical stimulation signal so that said electrical stimulation signal may be applied to said biological tissue; and

    adjustment means responsive to said output means and to said high voltage power supply for comparing the amplitude of said high voltage signal to the amplitude of the voltage drop across said electrode means during the application of said electrical stimulation signal to said biological tissue and adjusting the amplitude of said high voltage signal dependent upon the result of said comparing.

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