IMPLANT AND DELIVERY SYSTEM FOR NEURAL STIMULATOR
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United States of America Patent
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Nov 15, 2017
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Nov 15, 2016
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Abstract
An apparatus is provided including an implantable neural stimulator which is advanced through a greater palatine canal to a sphenopalatine ganglion (SPG) of a subject and has an implant-impedance-sensing electrode. The apparatus further includes an auxiliary impedance-sensing electrode and first and second wires, electrically coupled respectively to the implant-impedance-sensing and auxiliary-impedance-sensing electrodes. Impedance-based navigation circuitry includes a voltage generator configured to apply, current between the implant-impedance-sensing and auxiliary-impedance-sensing electrodes through the wires; an impedance sensor configured to measure an impedance between the implant-impedance-sensing and auxiliary-impedance-sensing electrodes based on the applying of the current; and a disposition tracker configured to determine, based on a change in the measured impedance, a disposition of the implantable neural stimulator in the greater palatine canal. Other applications are also described.
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