Wireless energy transfer for implantable devices
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United States of America Patent
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Sep 30, 2014
Grant Date -
Dec 5, 2013
app pub date -
Aug 7, 2013
filing date -
Sep 27, 2008
priority date (Note) -
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Abstract
Wireless energy transfer methods and designs for implantable electronics and devices include, in at least one aspect, a source resonator external to a patient, a device resonator coupled to an implantable device and being internal to the patient, a temperature sensor, and a tunable component coupled to the device resonator, wherein the tunable component is adjusted to detune a resonant frequency in response to measurement from the temperature sensor, and wherein a strength of the oscillating magnetic fields generated by the source resonator is adjusted to increase power output to maintain a level of power captured by the device resonator, thereby compensating for reduced efficiency resulting from detuning of the device resonator via the tunable component.
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