×

Microprocessor capture detection circuit and method

  • US 5,871,512 A
  • Filed: 04/09/1998
  • Issued: 02/16/1999
  • Est. Priority Date: 04/29/1997
  • Status: Expired due to Term
First Claim
Patent Images

1. A capture detection circuit in an implantable medical device having at least one electrode for sensing a physiologic electrical signal, the capture detection circuit comprising:

  • (a) an amplifier circuit, coupled to the electrode, for amplifying the physiologic electrical signal sensed by the electrode to produce an amplified signal, and(b) a microprocessor, coupled to the amplifier circuit, for negative peak tracking the amplified signal and detecting a change in the polarity thereof, the microprocessor having means for sampling the amplified signal and RAM means for storing sampled signals as a stored array, the microprocessor further having means for processing the stored array to determine whether a negative peak has been attained in the physiologic electrical signal.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×