Patent ID: 6829504
Filing Date: 2004-12-07
Classification: A61N

Abstract:
A system, comprising:a first electrode; and control circuitry, the control circuitry coupled to the first electrode, wherein the control circuitry includes a sensor to sense a cardiac signal through the first electrode, and wherein the control circuitry further includes; a pacing pulse generator coupled to the first electrode, wherein the pacing pulse generator produces pacing pulses to be delivered through the first electrode; a pulse rate controller coupled to the pacing pulse generator, wherein the pacing pulse generator is controlled by the pulse rate controller to generate pacing pulses at a pacing rate; and an intrinsic rate detector coupled to the pulse rate controller and the sensor, wherein the pulse rate controller decreases the pacing rate from an initial value that is well above an intrinsic rate until an intrinsic contraction is detected in the cardiac signal by the intrinsic rate detector, wherein the intrinsic rate detector determines an intrinsic rate from the detected intrinsic contraction, and wherein the pulse rate controller increases the pacing rate of the pacing pulses above the intrinsic rate.