The present invention relates to an implantable battery-operated electrostimulation device (10), particularly for stimulating a heart, having a telemetry unit (11) for wireless data transmission between the electrostimulation device (10) and an external device (21), a control unit (15), which is connected...http://www.google.es/patents/US7769453?utm_source=gb-gplus-sharePatente US7769453 - Implantable battery-operated electrostimulation device