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1. (WO2005101660) VOLTAGE LIMITED SYSTEMS AND METHODS
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2005/101660 International Application No.: PCT/US2005/012361
Publication Date: 27.10.2005 International Filing Date: 12.04.2005
IPC:
H03K 5/02 (2006.01) ,A61N 1/36 (2006.01)
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
K
PULSE TECHNIQUE
5
Manipulating pulses not covered by one of the other main groups in this subclass
01
Shaping pulses
02
by amplifying
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
N
ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
1
Electrotherapy; Circuits therefor
18
Applying electric currents by contact electrodes
32
alternating or intermittent currents
36
for stimulation, e.g. heart pace-makers
Applicants:
ADVANCED NEUROMODULATION SYSTEMS, INC. [US/US]; 6901 Preston Road Plano, TX 75024, US (AllExceptUS)
Inventors:
VARRICHIO, Anthony, J.; US
TRANCHINA, Benjamin, A.; US
Agent:
TANNENBAUM, David, H. ; Fulbright & Jaworski L.L.P. Suite 2800 2200 Ross Avenue Dallas, TX 75201-2784, US
Priority Data:
60/561,43712.04.2004US
Title (EN) VOLTAGE LIMITED SYSTEMS AND METHODS
(FR) SYSTEMES LIMITES EN TENSION ET PROCEDES ASSOCIES
Abstract:
(EN) In delivering constant current electrical stimulation pulses to electrodes implanted near a stimulation site, a programmable voltage limited mode of operation according to embodiments precludes unsafe voltage spikes upon substantial changes in resistance due to, for example, patient movement. A voltage multiplier of one embodiment is driven by a clock signal stopped whenever an output voltage reaches a predetermined level, and resumed when the output voltage drops below that level. A compurgator receiving a voltage-divided output from the voltage multiplier and a variable input control signal from a digital-to-analog converter controls generation of the clock signal according to embodiments.
(FR) L'invention concerne un système permettant de fournir des impulsions de stimulation électriques à courant constant à proximité d'un site de stimulation. Dans certains modes de réalisation, un mode de fonctionnement programmable, limité en tension, permet d'éviter les pics de tension dangereux lors de variations sensibles de résistance dues, notamment, aux mouvements du patient. Dans un mode de réalisation, un multiplicateur de tension est commandé par un signal d'horloge qui est stoppé lorsqu'une tension de sortie atteint un niveau prédéterminé, puis repris lorsque la tension de sortie tombe en-dessous de ce niveau. Selon le mode de réalisation, un comparateur commande la production du signal d'horloge en fonction d'un signal de sortie divisé en tension fourni par le multiplicateur de tension et d'un signal de commande à entrée variable fourni par un convertisseur numérique-analogique.
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Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, SM, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, YU, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IS, IT, LT, LU, MC, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)