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Signal distribution for patient-electrode measurements

  • US 9,585,593 B2
  • Filed: 11/18/2010
  • Issued: 03/07/2017
  • Est. Priority Date: 11/18/2009
  • Status: Active Grant
First Claim
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1. Apparatus for electrically connecting measurement apparatus to a biological subject, the apparatus including a signal delivery circuit including:

  • a current buffer having;

    a current buffer input for receiving a signal from a signal source; and

    ,a current buffer output for supplying a current to an electrode attached to the biological subject;

    a voltage buffer having;

    a voltage buffer input coupled to the current buffer output; and

    ,a voltage buffer output for providing a voltage signal indicative of a voltage at the electrode, to a sensor; and

    a DC offset control circuit coupled between the voltage buffer output and the current buffer input.

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