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Implantable cardiac stimulation device and method providing dynamic sensing configurations for bichamber stimulation and tachyarrhythmia detection

  • US 7,676,265 B1
  • Filed: 07/30/2007
  • Issued: 03/09/2010
  • Est. Priority Date: 05/02/2005
  • Status: Active Grant
First Claim
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1. An implantable cardiac stimulation device comprising:

  • a sensing circuit that senses activity of a heart;

    a lead system coupled to a plurality of chambers of the heart;

    a cardiac rate circuit that determines a cardiac rate of the heart; and

    a control circuit that causes the lead system to couple the sensing circuit to corresponding chambers of the heart when the cardiac rate is below a given rate and to a single chamber of the heart when the cardiac rate is above the given rate.

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