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Dual-use sensor for rate responsive pacing and heart sound monitoring

  • US 20050102001A1
  • Filed: 11/06/2003
  • Published: 05/12/2005
  • Est. Priority Date: 11/06/2003
  • Status: Active Grant
First Claim
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1. A cardiac rhythm management system comprising:

  • a sensing circuit to sense at least one electrogram;

    a pacing circuit to deliver pacing pulses;

    a dual-use sensor to sense a signal indicative of activities and heart sounds;

    a sensor processing circuit adapted to produce an activity level signal and a heart sound signal from the sensed signal, the sensor processing circuit including an input to receive the sensed signal indicative of activities and heart sounds, a first output representative of the activity level signal, and a second output representative of the heart sound signal; and

    a controller coupled to the sensing circuit and the pacing circuit, the controller including a rate responsive pacing algorithm execution module to receive the activity level signal and dynamically adjust at least a pacing interval based on at least the activity level signal.

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