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Back-up pulse generator

  • US 5,846,264 A
  • Filed: 04/01/1996
  • Issued: 12/08/1998
  • Est. Priority Date: 03/31/1995
  • Status: Expired due to Term
First Claim
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1. A pacemaker comprising first energy storing means for storing energy to be delivered in vivo to a heart in a pacing pulse and connectable to means for conducting the pacing pulse to said heart, detector means for sensing an evoked response of the heart to a pacing pulse, a separate back-up pulse generator having second energy storing means and means for discharging said second energy storing means for emitting a back-up pacing pulse after a failure of said detector means to sense an evoked response from an immediately preceding pacing pulse, said second energy storing means substantially permanently storing energy at a higher voltage than the energy stored in the first energy storing means.

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