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Systems and methods for leadless cardiac resynchronization therapy

  • US 9,511,233 B2
  • Filed: 02/05/2014
  • Issued: 12/06/2016
  • Est. Priority Date: 11/21/2013
  • Status: Expired
First Claim
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1. A method of using a subcutaneous device (SD) in a patient and a leadless pacing device (LPD) in the patient'"'"'s heart, the method comprising:

  • sensing electrical signals which includes moderately lengthened QRS data from the patient'"'"'s heart using the SD;

    employing the SD to determine whether cardiac resynchronization pacing therapy (CRT pacing) is appropriate based upon the QRS duration in the sensed electrical signals;

    employing the SD to determine timing of CRT pacing pulses for delivery to cardiac tissue through the LPD and sending signals indicative thereof to the LPD responsive to the sent indicative signals;

    delivering the CRT pacing pulses to the heart using the LPD;

    thereafter sensing subsequent electrical signals from the patient'"'"'s heart using the SD; and

    determining, by the SD based on the subsequent electrical signals, whether the CRT pacing by the LPD provided efficacious resynchronization and whether the delivery and timing of subsequent CRT pacing pulses should be modified.

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