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Rate-responsive pacemaker with minute volume determination and EMI protection

  • US 5,817,136 A
  • Filed: 05/02/1997
  • Issued: 10/06/1998
  • Est. Priority Date: 05/02/1997
  • Status: Expired due to Term
First Claim
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1. A rate responsive pacemaker comprising:

  • a sensor for sensing cardiac activity and generating a corresponding cardiac sense signal;

    a pace generator for generating pacing signals in response to a first and a second command signal;

    a metabolic demand sensor for sensing a metabolic demand parameter and generating a corresponding metabolic indicated signal;

    a noise sensor for generating a noise signal when sensing noise; and

    a controller receiving said sensor, metabolic indicated and noise signals and generating said first command responsive to said metabolic indicated signal in absence of noise and said second command independent of said metabolic indicated signal in the presence of noise.

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