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System and method for deriving a virtual ECG or EGM signal

  • US 6,505,067 B1
  • Filed: 11/22/2000
  • Issued: 01/07/2003
  • Est. Priority Date: 11/22/2000
  • Status: Expired due to Term
First Claim
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1. A system for having at least three electrode for measuring voltage signals S1 and S2 between a first and second pair of the at least three electrodes, respectively, and wherein one of the at least three electrodes is a common electrode used in both said first and second pairs, the system for automatically deriving an approximation of a voltage signal S existing between the common electrode and a selected point, the system comprising:

  • a user interface to allow a user to select a value for an angle θ

    , wherein the angle θ

    is the angle measured between a directional vector associated with a predetermined one of the first and second pair of the at least three electrodes and a directional vector U associated with the voltage signal S; and

    a processing circuit coupled to the user interface to derive the amplitude of the voltage signal S as a function of S1, S2, θ

    , an angle β

    between the first and second pairs.

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