Patent ID: 6148234
Filing Date: 2000-11-14
Classification: A61N

Abstract:
A cardiac pacing system with bi-ventricular pacing of a patient, comprising:pulse means for generating a pair of concurrent pacing pulses,lead means for delivering one of said concurrent pacing pulses to the patient's right ventricle and one of said concurrent pacing pulses to the patient's left ventricle, said lead means further having electrode means for sensing excitation sinals in each of said ventricles;refractory means for timing out a refractory interval following each delivery of a said pair of concurrent pacing pulses, and sensing means electrically connected to said lead means for determining when a said excitation signal has been sensed in at least one ventricle by said electrode means during a said refractory interval; andLOC means for indicating loss of capture in at least one of said ventricles in response to sensing one or at least ventricular excitation signal during said refractory interval; further comprising pulse output control means for increasing the power output of at least one pulse of said pulse pair in response to an indicated loss of capture;wherein said pulse means delivers two pulses of equal power output at substantially the same time, and said control means increases the power output of each said pulse of said pair to the same level.