Implantable nerve wrap for nerve stimulation configured for far field radiative powering
First Claim
1. An implantable medical device comprising:
- an antenna configured to receive a far field radiative signal;
a voltage rectifier configured to rectify the far field radiative signal received by the antenna to provide a rectified voltage signal;
a charge storage element operative to receive the rectified voltage signal and to store charge responsive to the rectified voltage signal;
a stimulation module powered by the charge storage element, the stimulation module operative to generate an electrical stimulation signal to stimulate a target nerve of a patient;
control circuitry configured to modulate backscattered energy to encode data in a third order frequency harmonic component of energy backscattered from the implantable medical device; and
a nerve wrap configured to house the voltage rectifier, the charge storage element, and the stimulation module, wherein the nerve wrap includes one or more electrodes operative to deliver the electrical stimulation signal to the target nerve.
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Accused Products
Abstract
A particular implantable device may include an antenna configured to receive a far field radiative signal. The implantable device may also include a voltage rectifier configured to rectify the far field radiative signal received by the antenna to provide a rectified voltage signal. The implantable device may further include a charge storage element operative to receive the rectified voltage signal and to store charge responsive to the rectified voltage signal. The implantable device may also include a stimulation module powered by the charge storage element. The stimulation module may be operative to generate an electrical stimulation signal to stimulate a target nerve of a patient. The implantable medical device may further include a nerve wrap configured to house the voltage rectifier, the charge storage element, and the stimulation module. The nerve wrap may include one or more electrodes operative to deliver the electrical stimulation signal to the target nerve.
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Citations
27 Claims
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1. An implantable medical device comprising:
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an antenna configured to receive a far field radiative signal; a voltage rectifier configured to rectify the far field radiative signal received by the antenna to provide a rectified voltage signal; a charge storage element operative to receive the rectified voltage signal and to store charge responsive to the rectified voltage signal; a stimulation module powered by the charge storage element, the stimulation module operative to generate an electrical stimulation signal to stimulate a target nerve of a patient; control circuitry configured to modulate backscattered energy to encode data in a third order frequency harmonic component of energy backscattered from the implantable medical device; and a nerve wrap configured to house the voltage rectifier, the charge storage element, and the stimulation module, wherein the nerve wrap includes one or more electrodes operative to deliver the electrical stimulation signal to the target nerve. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. An implantable medical device comprising:
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an antenna configured to receive a far field radiative signal; a voltage rectifier configured to rectify the far field radiative signal received by the antenna to provide a rectified voltage signal; a charge storage element operative to receive the rectified voltage signal and to store charge responsive to the rectified voltage signal; a stimulation module powered by the charge storage element, the stimulation module operative to generate an electrical stimulation signal to stimulate a target nerve of a patient; control circuitry configured to modulate backscattered energy to encode data in energy backscattered from the implantable medical device; a nerve wrap configured to house the voltage rectifier, the charge storage element, and the stimulation module, wherein the nerve wrap includes one or more electrodes operative to deliver the electrical stimulation signal to the target nerve; and a threshold detector coupled to the charge storage element, wherein the threshold detector is configured to determine when the charge stored at the charge storage element satisfies a charge threshold and to provide an indication when the charge threshold is satisfied, wherein the stimulation module is responsive to the indication, and wherein the antenna is further configured to receive therapy parameter data from an external source, the therapy parameter data including the charge threshold. - View Dependent Claims (24, 25, 26)
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27. An implantable medical device comprising:
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an antenna configured to receive a far field radiative signal; a voltage rectifier configured to rectify the far field radiative signal received by the antenna to provide a rectified voltage signal; a charge storage element operative to receive the rectified voltage signal and to store charge responsive to the rectified voltage signal; a stimulation module powered by the charge storage element, the stimulation module operative to generate an electrical stimulation signal to stimulate a target nerve of a patient; control circuitry configured to modulate backscattered energy to encode data in energy backscattered from the implantable medical device; and a nerve wrap configured to house the voltage rectifier, the charge storage element, and the stimulation module, wherein the nerve wrap includes one or more electrodes operative to deliver the electrical stimulation signal to the target nerve, wherein the far field radiative signal is a pulsed signal, wherein the pulsed signal received at the antenna has a power of 100 milliwatts or less during one duty cycle, wherein each pulse of the far field radiative signal has an instantaneous power selected to reduce a proportion of power lost due to forward biasing components of the voltage rectifier and wherein the instantaneous power of each pulse and an average power of the far field radiative signal are controlled to satisfy respective RF exposure safety limits.
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Specification