Systems and methods for providing power to one or more implantable devices
First Claim
1. A method comprising:
- providing an external device that comprises a first dynamic range amplifier and a second dynamic range amplifier, said first and second dynamic range amplifiers each comprising first and second output drivers;
implanting a stimulator coupled to one or more electrodes within a patient;
generatng an output signal based on a first input signal with said first output driver of said first dynamic range amplifier;
generating an output signal based on a second input signal with said second output driver of said first dynamic range amplifier, said second input signal comprising a substantially 180-degree-phase-shifted version of said first input signal;
generating an output signal based on said first input signal with said first output driver of said second dynamic range amplifier;
generating an output signal based on said second input signal with said second output driver of said second dynamic range amplifier;
selecting one of said dynamic range amplifiers to be used in generating a power signal for said stimulator;
disabling a remaining number of said dynamic range amplifiers; and
generating said power signal based on a combination of at least one of said output signals generated by said selected dynamic range amplifier;
transmitting said power signal to said stimulator; and
using said power signal to generate stimulation current and deliver said stimulation current to a stimulation site within said patient via said one or more electrodes.
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Accused Products
Abstract
Systems and methods for providing a power signal to one or more implantable devices include a number of dynamic range amplifiers each having a multiplicity of output drivers. Each of the output drivers is configured to generate an output signal. The systems and methods further include control circuitry configured to select at least one of the amplifiers to provide a number of output signals used to generate the power signal that is to be provided to the one or more implantable devices. The control circuitry is further configured to disable the output drivers corresponding to a remaining number of amplifiers. A matching circuit is configured to generate the power signal based on the output signals provided by the at least one selected amplifier. The systems and methods further include means to transmit the power signal to the one or more implantable devices.
125 Citations
18 Claims
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1. A method comprising:
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providing an external device that comprises a first dynamic range amplifier and a second dynamic range amplifier, said first and second dynamic range amplifiers each comprising first and second output drivers; implanting a stimulator coupled to one or more electrodes within a patient; generatng an output signal based on a first input signal with said first output driver of said first dynamic range amplifier; generating an output signal based on a second input signal with said second output driver of said first dynamic range amplifier, said second input signal comprising a substantially 180-degree-phase-shifted version of said first input signal; generating an output signal based on said first input signal with said first output driver of said second dynamic range amplifier; generating an output signal based on said second input signal with said second output driver of said second dynamic range amplifier; selecting one of said dynamic range amplifiers to be used in generating a power signal for said stimulator; disabling a remaining number of said dynamic range amplifiers; and generating said power signal based on a combination of at least one of said output signals generated by said selected dynamic range amplifier; transmitting said power signal to said stimulator; and using said power signal to generate stimulation current and deliver said stimulation current to a stimulation site within said patient via said one or more electrodes. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An implantable stimulator system comprising:
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an external device; and a stimulator coupled to one or more electrodes and configured to be implanted within a patient; wherein said external device comprises first and second dynamic range amplifiers each comprising a first output driver configured to generate an output signal based on a first input signal and a second output driver configured to generate an output signal based on a second input signal, said second input signal comnrising a substantially 180-degree-phase-shifted version of said first input signal; control circuitry configured to select one of said dynamic range amplifiers and disable a remaining number of said dynamic range amplifiers in accordance with an amplifier select signal; a matching circuit communicatively coupled to said first and second dynamic range amplifiers and configured to generate said a power signal based on a combination of at least one of said output signals generated by said selected dynamic range amplifier; and a primary coil communicatively coupled to said matching circuit and configured to transmit said power signal to said stimulator; and wherein said stimulator comprises a secondary coil configured to receive said power signal; and circuitry configured to use said power signal to generate stimulation current and deliver said stimulation current to a stimulation site within said patient via said one or more electrodes. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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17. A system comprising:
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an external device; and a stimulator coupled to one or more electrodes and configured to be implanted within a patient; wherein said external device comprises first and second dynamic range amplifiers each comprising a first output driver configured to generate an output signal based on a first input signal and a second output driver configured to generate an output signal based on a second input signal, said second input signal comprising a substantially 180-degree-phase-shifted version of said first input signal; means for selecting one of said dynamic range amplifiers to be used in generating a power signal for said stimulator; means for disabling a remaining number of said amplifiers; and means for generating said power signal based on a combination of at least one of said output signals generated by said selected dynamic range amplifier; and means for transmitting said power signal to said stimulator; and wherein said stimulator comprises means for using said power signal to generate stimulation current and deliver said stimulation current to a stimulation site within said patient via said one or more electrodes. - View Dependent Claims (18)
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Specification