Seizure sensing and detection using an implantable device

A - Human Necessities – 61 – B

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A61B 5/00 (2006.01) A61B 5/0476 (2006.01) A61N 1/36 (2006.01) G06F 17/00 (2006.01)

Patent

CA 2456443

A system and method for detecting and predicting neurological events with an implantable device (110) uses a relatively low-power central processing unit (428) in connection with signal processing circuitry (422) to identify features (including half waves) and calculate window-based characteristics (including line lengths and areas under the curve of the waveform) in an electrographic signal received from a patient's brain. The features and window- based characteristics are combinable in various ways according to the invention to detect and predict neurological events in real time, enabling responsive action by the implantable device.

L'invention concerne un système et un procédé de détection et de prévision d'évènements neurologiques à l'aide d'un dispositif implantable (110), utilisant une unité (428) de traitement centrale à puissance relativement faible en connexion avec un circuit (422) de traitement de signaux pour identifier des traits caractéristiques (y compris les demi-ondes) et calculer des caractéristiques de fenêtre (y compris des longueurs de ligne et des zones en dessous de la courbe de l'oscillogramme) d'un signal électrographique reçu du cerveau d'un patient. Selon l'invention, les traits caractéristiques et les caractéristiques de fenêtre peuvent être combinés de diverses manières pour détecter et prévoir des évènements neurologiques en temps réel, permettant une action du dispositif implantable en réponse.

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