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ACCURATE CARDIAC EVENT DETECTION IN AN IMPLANTABLE CARDIAC STIMULUS DEVICE

  • US 20140046394A1
  • Filed: 10/15/2013
  • Published: 02/13/2014
  • Est. Priority Date: 03/07/2008
  • Status: Active Grant
First Claim
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1. An implantable cardiac stimulus device (ICSD) comprising a canister housing operational circuitry coupled to a plurality of electrodes, the canister being coupled to a lead electrode assembly having at least some of the plurality of electrodes disposed thereon, the operational circuitry being configured to perform a method comprising:

  • capturing cardiac signals using at least some of the plurality of electrodes while implanted in a patient;

    detecting, from the captured cardiac signals, detected events by the use of comparison of the captured signal to detection threshold criteria, wherein the detection threshold criteria are generated for a given detected event by reference to whether a preceding detected event is similar or dissimilar to stored data;

    declaring a Tachy-on condition if the detected events indicate a cardiac rate for the patient that exceeds a predetermined threshold;

    while the Tachy-on condition is declared, determining whether the patient'"'"'s cardiac rhythm is malignant and, if so, delivering cardiac stimulus to the patient.

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