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Multi-frequency impedance monitoring system

  • US 9,642,558 B2
  • Filed: 06/03/2014
  • Issued: 05/09/2017
  • Est. Priority Date: 04/30/2008
  • Status: Active Grant
First Claim
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1. A system for measuring intrathoracic impedance across a plurality of selected tissue segments, comprising:

  • at least one lead carrying a plurality of electrodes, the electrodes being positioned so that selected pairs of electrodes span selected ones of the plurality of selected tissue segments;

    impedance measurement circuitry for measuring an impedance between the selected pairs of electrodes; and

    processing circuitry for evaluating the measured impedance between at least one of the selected pairs of electrodes to determine whether the tissue segment is in a diseased condition, and for providing an indicator of disease based on the determination of whether the tissue segment is in a diseased condition.

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