Embodiments relate to an implantable cardiac system (100), including a housing (302), electronic circuitry (314) for controlling one or more of power management, processing unit, information memory and management circuit, sensing and simulation output. The system also includes diagnosis and treatment software for diagnosing health issues, diagnosing mechanical issues, determining therapy output and manage patient health indicators over time, a power supply system including at least one rechargeable battery, a recharging system, an alarm (or alert) system to inform patient of energy level and integrity of system, communication circuitry, one or more electrodes for delivering therapeutic signal to a heart and one or more electrodes for delivering electrocardiogram signal from the heart to the electronic circuitry. The power supplies can include rechargeable batteries. The housing (302) can include a plurality of physically distinct structures that can be implanted in different locations in patient's body. The housing (302) can include receptacles that receive a probe that mechanically and electrically connects to circuitry to recharge the device and receive data from the device. The present embodiments further include a body orientation unit to determine body position and use same to control therapy.
