Patent ID: 7966068

Claim:
An active implantable medical device for pacing, resynchronization, cardioversion and/or defibrillation of a heart, comprising: means for sensing a heart rhythm, comprising an implantable lead having at least one endocardial electrode collecting electrical potentials representative of myocardium depolarizations, and a sensing circuit analyzing the collected electrical potentials and delivering a sequence of signals that are representative of successive cardiac depolarizations; means for detecting myocardium contractions, comprising an endocardial acceleration sensor adapted to be in direct contact with a tissue of the heart, and means for determining at least one peak of endocardial acceleration over one given cardiac cycle and delivering a sequence of signals that are representative of successive endocardial acceleration peaks (PEA); and means for detecting a fracture of said lead, comprising: means for receiving as an input, and correlating together, said sequence of signals representative of the successive cardiac depolarization, and said sequence of signals representative of the successive endocardial acceleration peaks; and means responsive to a lack of correlation, for delivering an indicator of suspicion of a fracture of said lead.