Transcutaneous energy transfer module with integrated conversion circuitry
First Claim
1. An implantable transcutaneous energy transfer device, comprising:
- a transcutaneous energy transfer secondary coil comprising an inner winding and an outer winding, the secondary coil configured to inductively couple to a transcutaneous energy transfer primary coil, said secondary coil having an electrical signal induced therein; and
electronic components disposed in a central region of the inner and outer windings and electrically coupled to the secondary coil, the electronic components for processing the electrical signal for powering implanted devices,wherein the inner winding and outer winding are configured such that a magnetic field generated by the inner winding and a magnetic field generated by the outer winding when the electrical signal is induced in the secondary coil substantially cancel one another at the central region.
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Accused Products
Abstract
An implantable transcutaneous energy transfer device secondary coil module includes a housing, a secondary coil, power conditioning circuitry, and a low voltage, high power connector. The transcutaneous energy transfer secondary coil is disposed outside the housing and is configured to receive a time-varying magnetic field provided by a transcutaneous energy transfer primary coil, and to convert the time-varying magnetic field into a high voltage, alternating current electric signal within the coil. The power conditioning circuitry is mounted within the housing and is electrically coupled to the secondary coil. The power conditioning circuitry including electronics for converting the high voltage, alternating current electric signal from the secondary coil into a high power, low voltage direct current electric signal. The low voltage, high power connector electrically coupled to the power conditioning circuitry and extending outside the housing for connecting the secondary coil module to a power bus for delivering power to implanted devices.
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Citations
16 Claims
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1. An implantable transcutaneous energy transfer device, comprising:
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a transcutaneous energy transfer secondary coil comprising an inner winding and an outer winding, the secondary coil configured to inductively couple to a transcutaneous energy transfer primary coil, said secondary coil having an electrical signal induced therein; and electronic components disposed in a central region of the inner and outer windings and electrically coupled to the secondary coil, the electronic components for processing the electrical signal for powering implanted devices, wherein the inner winding and outer winding are configured such that a magnetic field generated by the inner winding and a magnetic field generated by the outer winding when the electrical signal is induced in the secondary coil substantially cancel one another at the central region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A transcutaneous energy transfer system, comprising:
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a transcutaneous energy transfer primary coil adapted to be placed outside a patient; a transcutaneous energy transfer device secondary coil module adapted to be implanted within the patient and to inductively couple to the primary coil, the secondary coil module comprising; a transcutaneous energy transfer secondary coil comprising an inner winding and an outer winding, the secondary coil having an electrical signal induced therein when the secondary coil is inductively coupled to the primary coil; and electronic components disposed in a central region of the inner and outer windings and electrically coupled to the secondary coil for processing the electrical signal, wherein the inner winding and outer winding are configured such that a magnetic field generated by the inner winding and a magnetic field generated by the outer winding when the electrical signal is induced in the secondary coil substantially cancel one another at the central region; and an implantable medical device electrically coupled to the electronic components for receiving power therefrom. - View Dependent Claims (13, 14)
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15. A method for reducing inductive heating in a transcutaneous energy transfer system, comprising a transcutaneous energy transfer primary coil adapted to be placed outside a patient, a transcutaneous energy transfer secondary coil module adapted to be implanted within the patient and to inductively couple to the primary coil, the transcutaneous energy transfer secondary coil module comprising a secondary coil and electronic components disposed in a central region of the secondary coil, the method comprising:
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constructing the transcutaneous energy transfer secondary coil as an inner winding and an outer winding, the secondary coil having an electrical signal induced therein when the secondary coil is inductively coupled to the primary coil; and selecting a diameter for the inner and outer windings and a number of turns for each winding such that magnetic fields in the central region substantially cancel each other. - View Dependent Claims (16)
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Specification