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PACING MODE SWITCHING AND RATE RESPONSE LIMIT IN A VENTRICULAR PACEMAKER

  • US 20190308022A1
  • Filed: 04/09/2018
  • Published: 10/10/2019
  • Est. Priority Date: 04/09/2018
  • Status: Active Grant
First Claim
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1. An intracardiac ventricular pacemaker, comprising:

  • a pulse generator configured to generate and deliver pacing pulses to a ventricle of a patient'"'"'s heart via electrodes coupled to the pacemaker;

    a motion sensor configured to produce a motion signal;

    a control circuit coupled to the motion sensor and the pulse generator; and

    a housing wholly implantable within a ventricular chamber of the patient'"'"'s heart and enclosing the pulse generator, the motion sensor and the control circuit;

    the control circuit being configured to;

    identify a ventricular systolic event;

    detect a ventricular passive filling event signal from the motion signal;

    determine a time interval from the ventricular systolic event to the ventricular passive filling event;

    establish a minimum pacing interval based on the time interval;

    determine a sensor indicated pacing rate interval;

    compare the sensor indicated pacing rate interval to the minimum pacing interval; and

    control the pulse generator to deliver a ventricular pacing pulse at the minimum pacing interval in response to the sensor indicated pacing rate interval being less than the minimum pacing interval.

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