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1. WO2014004316 - CIRCUIT, SYSTEM AND METHOD FOR FAR-FIELD RADIATIVE POWERING OF AN IMPLANTABLE MEDICAL DEVICE

Publication Number WO/2014/004316
Publication Date 03.01.2014
International Application No. PCT/US2013/047113
International Filing Date 21.06.2013
IPC
A61N 1/378 2006.01
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
H03H 7/40 2006.01
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
7Multiple-port networks comprising only passive electrical elements as network components
38Impedance-matching networks
40Automatic matching of load impedance to source impedance
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
H03H 7/40
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
7Multiple-port networks comprising only passive electrical elements as network components
38Impedance-matching networks
40Automatic matching of load impedance to source impedance
Applicants
  • CYBERONICS, INC. [US]/[US]
Inventors
  • CHOW, Eric, Y.
Agents
  • SCOTT, Timothy, L.
Priority Data
13/901,87424.05.2013US
61/665,68728.06.2012US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) CIRCUIT, SYSTEM AND METHOD FOR FAR-FIELD RADIATIVE POWERING OF AN IMPLANTABLE MEDICAL DEVICE
(FR) CIRCUIT, SYSTÈME ET MÉTHODE D'ALIMENTATION PAR RAYONNEMENT EN CHAMP LOINTAIN D'UN DISPOSITIF MÉDICAL IMPLANTABLE
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.
(FR)
La présente invention concerne un circuit isolé comprenant une entrée RF conçue pour recevoir un signal d'alimentation par rayonnement en champ lointain et une sortie de tension redressée conçue pour fournir une tension redressée sur la base du signal d'alimentation par rayonnement en champ lointain. Le circuit isolé comprend également un premier ensemble puissance comprenant une première impédance couplée à l'entrée RF, la première impédance étant fournie, au moins en partie, par activation d'un premier commutateur en réponse au fait que la tension redressée satisfait à un premier seuil de tension. Le circuit isolé comprend en outre un second ensemble puissance comprenant une seconde impédance couplée à la sortie RF, la seconde impédance étant fournie, au moins en partie, par activation du premier commutateur et d'un second commutateur en réponse au fait que la tension redressée satisfait au premier seuil de tension et à un second seuil de tension, respectivement.
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Latest bibliographic data on file with the International Bureau