Automatic detection of seizures using electroencephalographic signals
First Claim
1. A method of operating a patient monitoring system wherein a seizure in the patient is automatically detected comprising the steps of:
- detecting an electrical discharge in the patient'"'"'s brain;
converting the detected electrical discharge into a digital signal;
inputting the digital signal into a microprocessor;
detecting automatically a seizure using the microprocessor and the digital signal comprising the steps of;
dividing the digital signal into a plurality of time segments;
standardizing the digital signal in each time segment;
processing the standardized digital signal in each time segment to form at least one additional signal in each time segment;
reducing each signal in each time segment to a feature, the feature providing information about whether a seizure is occurring ;
standardizing each feature; and
determining whether a seizure is occurring using the standardized features from each time segment; and
indicating that a seizure is occurring.
1 Assignment
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Accused Products
Abstract
A patient monitoring system and a method of operating same, including automatically detecting a seizure in the patient, by detecting an electrical discharge in the patient'"'"'s brain; converting the detected electrical discharge into a digital signal; inputting the digital signal into a microprocessor; detecting a seizure by dividing the digital signals into time segments, preprocessing each time segment including standardizing the signal, reducing the signal in each time segment to a feature, the feature providing information about whether a seizure is occurring using the feature from each time segment; and indicating that a seizure is occurring.
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Citations
45 Claims
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1. A method of operating a patient monitoring system wherein a seizure in the patient is automatically detected comprising the steps of:
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detecting an electrical discharge in the patient'"'"'s brain; converting the detected electrical discharge into a digital signal; inputting the digital signal into a microprocessor; detecting automatically a seizure using the microprocessor and the digital signal comprising the steps of; dividing the digital signal into a plurality of time segments; standardizing the digital signal in each time segment; processing the standardized digital signal in each time segment to form at least one additional signal in each time segment; reducing each signal in each time segment to a feature, the feature providing information about whether a seizure is occurring ; standardizing each feature; and determining whether a seizure is occurring using the standardized features from each time segment; and indicating that a seizure is occurring. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A patient monitoring system for automatically detecting a seizure, the monitoring system comprising:
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means for detecting an electrical discharge in the patient'"'"'s brain; means for converting the detected electrical discharge into a digital signal; a microprocessor for receiving the digital signal; means for automatically detecting a seizure using the microprocessor and the digital signal, the automatic detection means comprising; means for dividing the digital signal into a plurality of time segments; means for standardizing the digital signal in each time segment; means for processing the standardized digital signal in each time segment to form at least one additional signal in each time segment; means for reducing each signal in each time segment to a feature, the feature providing information about whether a seizure is occurring; means for standardizing each feature; and means for determining whether a seizure is occurring using the standardized features from each time segment; and means for indicating that a seizure is occurring, the indicating means being connected to the automatic detection means. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45)
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Specification