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1. US20130253612 - Circuit, system and method for far-field radiative powering of an implantable medical device

Office United States of America
Application Number 13901874
Application Date 24.05.2013
Publication Number 20130253612
Publication Date 26.09.2013
Grant Number 09675809
Grant Date 13.06.2017
Publication Kind B2
IPC
A61N 1/378
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
NELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
1Electrotherapy; Circuits therefor
18Applying electric currents by contact electrodes
32alternating or intermittent currents
36for stimulation, e.g. heart pace-makers
372Arrangements in connection with the implantation of stimulators
378Electrical supply
A61N 1/372
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
NELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
1Electrotherapy; Circuits therefor
18Applying electric currents by contact electrodes
32alternating or intermittent currents
36for stimulation, e.g. heart pace-makers
372Arrangements in connection with the implantation of stimulators
H02J 50/20
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
50Circuit arrangements or systems for wireless supply or distribution of electric power
20using microwaves or radio frequency waves
CPC
A61N 1/3787
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
NELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
1Electrotherapy; Circuits therefor
18Applying electric currents by contact electrodes
32alternating or intermittent currents
36for stimulation
372Arrangements in connection with the implantation of stimulators
378Electrical supply
3787from an external energy source
A61N 1/37229
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
NELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
1Electrotherapy; Circuits therefor
18Applying electric currents by contact electrodes
32alternating or intermittent currents
36for stimulation
372Arrangements in connection with the implantation of stimulators
37211Means for communicating with stimulators
37217characterised by the communication link, e.g. acoustic or tactile
37223Circuits for electromagnetic coupling
37229Shape or location of the implanted or external antenna
H02J 50/20
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
50Circuit arrangements or systems for wireless supply or distribution of electric power
20using microwaves or radio frequency waves
Applicants CYBERONICS, INC.
Inventors Eric Y. Chow
Agents Foley & Lardner LLP
Title
(EN) Circuit, system and method for far-field radiative powering of an implantable medical device
Abstract
(EN)

An isolated circuit including a RF input configured to receive a far field radiative powering signal and a rectified voltage output configured to provide a rectified voltage based on the received far field radiative powering signal. The isolated circuit also includes a first power assembly comprising a first impedance coupled to the RF input where the first impedance is provided, at least in part, by activating a first switch in response to the rectified voltage satisfying a first voltage threshold. The isolated circuit also includes a second power assembly comprising a second impedance coupled to the RF input where the second impedance is provided, at least in part, by activating the first switch and a second switch in response to the rectified voltage satisfying the first voltage threshold and a second voltage threshold, respectively.

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