Transcutaneous energy transfer module with integrated conversion circuitry

An implantable blood pump energy supply system for receiving a time-varying magnetic field from a transcutaneous energy transfer primary coil to power a blood pumping device, comprising:

• a transcutaneous energy transfer device secondary coil module having:
• an inner housing;
• a transcutaneous energy transfer secondary coil disposed outside the housing configured to receive the time-varying magnetic field provided by the transcutaneous energy transfer primary coil and convert the time-varying magnetic field into an alternating current electric signal within the coil;
• power conditioning circuitry mounted within the housing and electrically coupled to the secondary coil, the power conditioning circuitry including electronics for converting an alternating current electric signal from the secondary coil into a direct current electronic signal;
• and
• a direct current output means electrically coupled to the power conditioning circuitry and extending outside the module;
• an implantable power bus electrically coupled to the connector for delivering power to implanted devices;
• and
• a blood pumping device electrically coupled to and receiving power from the power bus.

An implantable transcutaneous energy transfer device secondary coil module for receiving a time-varying magnetic field from a transcutaneous energy transfer primary coil and converting the time-varying magnetic field to a low voltage output, comprising:

• an inner housing having an inductive heat reducing means;
• a transcutaneous energy transfer secondary coil disposed outside the housing configured to receive a time-varying magnetic field provided by a transcutaneous energy transfer primary coil and convert the time-varying magnetic field into a high voltage, alternating current electric signal within the coil;
• power conditioning circuitry mounted within the housing and electrically coupled to the secondary coil, the power conditioning circuitry including electronics for converting an alternating current electric signal from the secondary coil having a high voltage greater than or equal to about 200 volts into a direct current electric signal having a low voltage of less than or equal to about 50 volts and a high power level of greater than or equal to about 15 watts;
• a low voltage, high power output means electrically coupled to the power conditioning circuitry and extending outside the module for connecting the secondary coil module to a power bus for delivering power to implanted devices.

A transcutaneous energy transfer system, comprising:

• a transcutaneous energy transfer primary coil adapted to be placed outside a patient for providing a time-varying magnetic field that passes into the patient;
• a transcutaneous energy transfer device secondary coil module adapted to be implanted within the time-varying magnetic field within the patient provided by the primary coil for receiving and conditioning power from the time-varying magnetic field, the secondary coil module comprising:
• an inner housing including an inductive heat reducing means;
• a transcutaneous energy transfer secondary coil disposed outside the housing and configured to receive the time-varying magnetic field provided by the transcutaneous energy transfer primary coil and convert the time-varying magnetic field into a high voltage, alternating current electric signal within the coil;
• power conditioning circuitry mounted within the housing and electrically coupled to the secondary coil, the power conditioning circuitry including electronics for converting a high voltage, alternating current electric signal from the secondary coil into a high power, low voltage direct current electric signal;
• an output line electrically coupled to the power conditioning circuitry and extending outside the module to transmit the high power, low voltage direct current electric signal outside of the module.