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System and method for adjusting sensor threshold in a rate responsive pacemaker

  • US 5,720,769 A
  • Filed: 11/05/1996
  • Issued: 02/24/1998
  • Est. Priority Date: 11/05/1996
  • Status: Expired due to Term
First Claim
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1. A rate responsive cardiac pacemaker, comprising:

  • a pace pulse generator for generating cardiac pace pulses, and rate control means for controlling the rate of generation of said pace pulses, said rate control means havinga sensor responsive to a predetermined patient parameter for continuously providing a sensor output signal having a varying signal level,processing means for processing said sensor output signal to provide a count signal for use in controlling said rate whenever said sensor output signal meets predetermined sensor output signal level criteria,accumulating means for accumulating data representative of said count signals over respective predetermined periods of time, and adjusting means for adjusting said criteria as a function of said data.

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