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1. (WO2018160271) DEVICES AND METHODS FOR SENSING PHYSIOLOGICAL SIGNALS DURING STIMULATION THERAPY
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Pub. No.:
WO/2018/160271
International Application No.:
PCT/US2018/012758
Publication Date:
07.09.2018
International Filing Date:
08.01.2018
IPC:
A61N 1/36
(2006.01)
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:
MEDTRONIC, INC.
[US/US]; 710 Medtronic Parkway NE Minneapolis, Minnesota 55432, US
Inventors:
STANSLASKI, Scott R.
; US
DEVINE, Robert J.
; US
DENISON, Timothy J.
; US
ROCZNIAK, Vincent A.
; US
SMITH, Todd V.
; US
ADAMSKI, Thomas H.
; US
Agent:
MCMAHON, Beth L.
; US
ALBRECHT, John W.
; US
FRANZEN, Rick L.
; US
SONDREAL, Shane O.
; US
Priority Data:
15/444,997
28.02.2017
US
Title
(EN)
DEVICES AND METHODS FOR SENSING PHYSIOLOGICAL SIGNALS DURING STIMULATION THERAPY
(FR)
DISPOSITIFS ET PROCÉDÉS POUR LA DÉTECTION DE SIGNAUX PHYSIOLOGIQUES PENDANT UNE THÉRAPIE PAR STIMULATION
Abstract:
(EN)
Devices and methods provide for the sensing of physiological signals by providing a stimulation waveform that includes a stimulation pulse followed by an active recharge pulse to clear the charge in capacitors within the stimulation path. The active recharge pulse is followed by a period of passive recharge and then a period of no recharge. Non-neurological sources of artifacts within the sensed physiological signal may be handled by providing a brief period of passive recharge followed by a lengthy period of no recharge, which is made possible by the use of the active recharge pulse prior to the passive recharge. The period of no recharge removes any low impedance path to ground from the stimulation electrodes, which allows an amplifier of the sensing circuit to provide common mode rejection of non-neurological signals, such as cardiac signals, present at the sensing electrodes.
(FR)
L'invention concerne des dispositifs et des procédés permettent la détection de signaux physiologiques en fournissant une forme d'onde de stimulation qui comprend une impulsion de stimulation suivie d'une impulsion de recharge active pour dégager la charge dans des condensateurs à l'intérieur du voie de stimulation. L'impulsion de recharge active est suivie d'une période de recharge passive, puis d'une période de non recharge. Des sources non neurologiques d'artefacts dans le signal physiologique détecté peuvent être gérées en fournissant une brève période de recharge passive suivie d'une longue période de non recharge, qui est rendue possible par l'utilisation de l'impulsion de recharge active avant la recharge passive. La période de non recharge élimine toute voie à faible impédance à la terre à partir des électrodes de stimulation, ce qui permet à un amplificateur du circuit de détection de fournir un rejet de mode commun de signaux non neurologiques, tels que des signaux cardiaques, présents au niveau des électrodes de détection.
Designated States:
AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language:
English (
EN
)
Filing Language:
English (
EN
)