Back-up pulse generator

摘要

A back-up pulse generator for a pacemaker having a first energy storing component for storing energy to be delivered in a stimulation pulse and connectable to means for conducting the stimulation pulse to the heart, the back-up pulse generator including a back-up pulse energy storing component for emitting a back-up pulse after a failure to sense an evoked response from a preceding stimulation pulse. The back-up pulse energy storing component substantially permanently stores energy at a higher voltage than the energy stored in the first energy storing component.