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ECG electrode characterization and compensation

  • US 7,245,961 B2
  • Filed: 07/19/2004
  • Issued: 07/17/2007
  • Est. Priority Date: 07/19/2004
  • Status: Expired due to Fees
First Claim
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1. A system, comprising:

  • a data processing device having logic elements provided therein as one of, or a combination of, circuit components, or as computer readable code stored on a processor readable media, said logic elements comprising;

    a characterization logic configured to characterize a signal transferring property of a first electrode associated with an electrocardiogram (ECG) apparatus, the first electrode being configured to receive electrocardiac signals from a subject to be monitored by the electrocardiogram apparatus; and

    a compensation logic operably connected to the characterization logic, the compensation logic being configured to manipulate electrocardiac signals received by the first electrode based, at least in part, on the characterization of the signal transferring property;

    the characterization logic being configured to provide a set of characterizing signals to a second electrode configured to transmit the set of characterizing signals into the subject, the characterization logic being configured to receive through the first electrode a set of property revealing signals produced in response to the set of characterizing signals being transmitted into the subject;

    the characterization logic being configured to configure an impedance transfer function logic with an impedance transfer function that characterizes a skin/electrode impedance associated with the first electrode;

    the impedance transfer function logic being configured with data values representing a mathematical approximation of the impedance transfer function that characterizes the skin/electrode impedance associated with the first electrode;

    and the compensation logic being configured to dynamically manipulate the electrocardiac signal by selectively providing the electrocardiac signal to a logic configured to selectively reconfigure the impedance transfer logic to add one or more of, a pole, and a zero to the impedance transfer function by manipulating a data value representing an additional term to the mathematical approximation of the impedance transfer function based, at least in part, on one or more of, an amplitude response of the impedance transfer function over a range of frequencies, and a frequency response of the impedance transfer function over a range of frequencies.

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