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Neural stimulation devices and systems for treatment of chronic inflammation

  • US 9,162,064 B2
  • Filed: 10/07/2014
  • Issued: 10/20/2015
  • Est. Priority Date: 12/23/2009
  • Status: Active Grant
First Claim
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1. A leadless, implantable microstimulator device for treating chronic inflammation, the device comprising:

  • a hermetically sealed capsule body;

    at least two electrically conductive capsule regions, wherein each region electrically connects to an electrode for applying stimulation to a vagus nerve;

    a resonator within the sealed capsule body, the resonator comprising a coil and a capacitor configured to resonate at a predetermined frequency range;

    a thermistor positioned to monitor the temperature of the coil;

    a battery within the sealed capsule body; and

    an electronic assembly within the sealed capsule body;

    wherein the electronic assembly comprises power management circuitry configured to receive power from the resonator to charge the battery, a microcontroller configured to control stimulation of the vagus nerve from the conductive capsule regions, and an overtemperature control configured to detune the resonator to reduce energy absorption when the thermistor measures a temperature exceeding a predetermined threshold temperature.

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