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1. WO2011071597 - IMPLANTABLE MEDICAL DEVICE WITH AUTOMATIC TACHYCARDIA DETECTION AND CONTROL IN MRI ENVIRONMENTS

Publication Number WO/2011/071597
Publication Date 16.06.2011
International Application No. PCT/US2010/053202
International Filing Date 19.10.2010
IPC
A61N 1/37 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
362Heart stimulators
37Monitoring; Protecting
A61N 1/08 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
NELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
1Electrotherapy; Circuits therefor
02Details
08Arrangements or circuits for monitoring, protecting, controlling or indicating
A61N 1/362 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
362Heart stimulators
A61N 1/39 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
38for producing shock effects
39Heart defibrillators
CPC
A61N 1/056
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
NELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
1Electrotherapy; Circuits therefor
02Details
04Electrodes
05for implantation or insertion into the body, e.g. heart electrode
056Transvascular endocardial electrode systems
A61N 1/086
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
NELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
1Electrotherapy; Circuits therefor
02Details
08Arrangements or circuits for monitoring, protecting, controlling or indicating
086Magnetic resonance imaging [MRI] compatible leads
A61N 1/37
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
362Heart stimulators
37Monitoring; Protecting
A61N 1/3718
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
362Heart stimulators
37Monitoring; Protecting
3718Monitoring of or protection against external electromagnetic fields or currents
A61N 1/3962
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
38for producing shock effects
39Heart defibrillators
3956Implantable devices for applying electric shocks to the heart, e.g. for cardioversion
3962in combination with another heart therapy
A61N 1/39622
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
38for producing shock effects
39Heart defibrillators
3956Implantable devices for applying electric shocks to the heart, e.g. for cardioversion
3962in combination with another heart therapy
39622Pacing therapy
Applicants
  • CARDIAC PACEMAKERS, INC. [US]/[US] (AllExceptUS)
  • STUBBS, Scott R. [US]/[US] (UsOnly)
  • GILKERSON, James O. [US]/[US] (UsOnly)
  • DOSHI, Hiten J. [US]/[US] (UsOnly)
  • SCHUSTER, Diane [US]/[US] (UsOnly)
Inventors
  • STUBBS, Scott R.
  • GILKERSON, James O.
  • DOSHI, Hiten J.
  • SCHUSTER, Diane
Agents
  • KOZIOL, Paul G.
Priority Data
61/267,57308.12.2009US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) IMPLANTABLE MEDICAL DEVICE WITH AUTOMATIC TACHYCARDIA DETECTION AND CONTROL IN MRI ENVIRONMENTS
(FR) DISPOSITIF MÉDICAL IMPLANTABLE POUR DÉTECTION ET COMMANDE AUTOMATIQUES DE TACHYCARDIE DANS ENVIRONNEMENTS D'IMAGERIE PAR RÉSONANCE MAGNÉTIQUE
Abstract
(EN)
An implantable medical device (IMD) includes a lead having one or more sensing electrodes and one or more therapy delivery electrodes, and a sensor configured to detect the presence of static and time-varying scan fields in a magnetic resonance imaging (MRI) environment. A controller, in electrical communication with the lead and the sensor, is configured to process signals related to tachycardia events sensed via the one or more sensing electrodes and to deliver pacing and shock therapy signals via the one or more therapy delivery electrodes. The controller compares the sensed static and time-varying scan fields to static and time-varying scan field thresholds. The controller controls delivery of anti-tachycardia pacing and shock therapy signals as a function of the detected tachycardia events, the comparison of the sensed static scan field to the static scan field threshold, and the comparison of the time-varying scan fields to the time-varying scan field thresholds.
(FR)
L'invention porte sur un dispositif médical implantable (IMD) qui comprend un conducteur possédant une ou plusieurs électrodes de détection et une ou plusieurs électrodes d'administration de thérapie, et un capteur configuré pour détecter la présence de champs de balayage statique et variant dans le temps dans un environnement d'imagerie par résonance magnétique (IRM). Un dispositif de commande, en communication électrique avec le conducteur et le capteur, est configuré pour traiter les signaux associés aux événements de tachycardie détectés par une ou plusieurs électrodes de détection et pour administrer des signaux de stimulation et de thérapie de choc par l'intermédiaire de la ou des électrodes d'administration de thérapie. Le dispositif de commande compare les champs de balayage statique et variant dans le temps détectés avec les seuils de champ de balayage statique et variant dans le temps. Le dispositif de commande commande l'administration des signaux de stimulation et de thérapie de choc anti-tachycardie en fonction des événements de tachycardie détectés, la comparaison du champ de balayage statique détecté avec le seuil de champ de balayage statique, et la comparaison des champs de balayage variant dans le temps avec les seuils de champ de balayage variant dans le temps.
Also published as
Latest bibliographic data on file with the International Bureau