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SYSTEM AND METHOD FOR FACILITATING A CARDIAC RHYTHM DISORDER DIAGNOSIS BASED ON SUBCUTANEOUS CARDIAC MONITORING DATA

  • US 20190069794A1
  • Filed: 11/01/2018
  • Published: 03/07/2019
  • Est. Priority Date: 09/25/2013
  • Status: Active Grant
First Claim
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1. A system for facilitating a cardiac rhythm disorder diagnosis based on subcutaneous cardiac monitoring data, comprising:

  • a subcutaneous insertable cardiac monitor, comprising;

    an implantable housing comprised of a biocompatible material that is suitable for implantation within a living body;

    at least one pair of electrocardiographic (ECG) sensing electrodes provided on a ventral surface and on opposite ends of the implantable housing operatively placed to facilitate sensing in closest proximity to the low amplitude, low frequency content cardiac action potentials that are generated during atrial activation; and

    electronic circuitry provided within the housing assembly comprising a low power microcontroller operable to execute under modular micro program control as specified in firmware, an ECG front end circuit interfaced to the microcontroller and configured to capture the cardiac action potentials sensed by the pair of ECG sensing electrodes which are output as ECG signals, and non-volatile memory electrically interfaced with the microcontroller and operable to continuously store samples of the ECG signals; and

    a download station adapted to retrieve the stored samples of the ECG signals from the subcutaneous insertable cardiac monitor as ECG data;

    a processor and memory within which code for execution by the processor is stored, further comprising;

    an identification module to identify a set of R-wave peaks within the ECG data;

    a construction module to construct an R-R interval plot, comprising;

    a determination submodule to determine a difference between recording times of successive pairs of the R-wave peaks in the set and to determine a heart rate associated with each difference; and

    a plot submodule to plot the pairs of the R-wave peaks and associated heart rate as the R-R interval plot;

    a display to facilitate diagnosis of a cardiac disorder of the patient based on patterns of the plotted pairs of the R-wave peaks and the associated heart rates in the R-R interval plot.

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