Cardiac support systems and methods for chronic use

A method for treating heart failure, the method comprising:

• generating an amount of blood flow with a rotary blood pump implanted in a patient;
• coupling a transmitting coil assembly to a receiving coil assembly, implanted in the patient and contained within an implantable housing, using magnetic resonance coupling, such that the transmitting coil assembly electromagnetically transfers energy to the receiving coil assembly;
• and
• storing, in a power module implanted in the patient and contained within the implantable housing, the energy transferred to the receiving coil assembly, the energy being utilized to operate the rotary blood pump.

A method for treating heart failure, the method comprising:

• receiving energy wirelessly in a receiving coil assembly implanted in a human body;
• storing the energy in a power module implanted in the human body;
• and
• producing an amount of blood flow from a rotary blood pump, implanted in the human body, such that the amount of blood flow is generated with an Energy Conversion Ratio (ECR) of 1.0 or greater using the energy stored in the power module.