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Detection of cardiac evoked potentials

  • US 4,858,610 A
  • Filed: 02/08/1988
  • Issued: 08/22/1989
  • Est. Priority Date: 12/11/1985
  • Status: Expired due to Term
First Claim
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1. The method of cardiac pacing and sensing which comprises the steps of:

  • providing a cardiac pacing lead having a first electrode carried on the distal end of said lead and a second electrode carried by the lead and spaced from said first electrode and free of electrical connection thereto;

    positioning said lead in a heart chamber;

    periodically emitting an electrical stimulus, pulse in a unipolar mode, from said first electrode to stimulate cardiac muscular contraction; and

    detecting in a unipolar mode, an electric potential response evoked by said pulse, by said second electrode, whereby signal interference caused by residual polarization of said first electrode is suppressed.

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