Patent ID: 8983591
Filing Date: 2015-03-17
Classification: A61B

Abstract:
1. An apparatus for detecting seizures with motor manifestations, the apparatus comprising: one or more electromyography electrodes configured to provide an electromyography signal representing seizure-related muscle activity; a processor configured to receive the electromyography signal and process the electromyography signal to determine when a seizure is occurring based on the electromyography signal; said processor configured to detect bursts of the electromyography signal, assign certainty values to individual bursts among said detected bursts, and determine a burst count contribution to seizure detection based on a number of said detected bursts weighted as a function of the certainty values assigned to said individual bursts; said processor configured to qualify bursts against a minimum threshold duration and maximum threshold duration; said processor configured to determine said certainty values based on how well the individual bursts compare to a reference burst in terms of one or more burst characteristics selected from the group of characteristics including burst signal-to-noise ratio, burst width, and burst amplitude; said processor configured to identify the presence of a plurality of bursts over a time window, determine the periodicity of bursts over said time window, and determine a periodicity contribution to seizure detection; said processor further configured to combine said burst count contribution and said periodicity contribution using a supervisory algorithm to determine a seizure detection value, and compare said seizure detection value to a threshold seizure detection value indicative of when a seizure is occurring; and said processor further configured to generate an alert if a seizure is occurring.