Closed-loop feedback-driven neuromodulation
First Claim
1. A method of managing epilepsy, the method comprising:
- measuring one or more electrical signals from a patient'"'"'s brain with one or more intracranial electrodes;
receiving the one or more electrical signals in a unit that is implanted intracranially in the patient;
extracting parameters from the one or more electrical signals that are indicative of a seizure or predictive of a future seizure, the extracted parameters comprising at least one of a peak-to-valley times, valley-to-peak times, positive phase amplitudes, and negative phase amplitudes;
delivering one or more bursts of charge-balanced biphasic stimulus pulses to a patient'"'"'s brain when the extracted parameters are indicative of undesirable electrical activity in the patient'"'"'s brain;
monitoring the parameters after delivering the one or more bursts of charge-balanced biphasic stimulus pulses; and
delivering one or more subsequent bursts of charge-balanced biphasic stimulus pulses to the patient'"'"'s brain if the monitored parameters indicate that the patient still has undesirable electrical activity in the patient'"'"'s brain.
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Accused Products
Abstract
A neurological control system for modulating activity of any component or structure comprising the entirety or portion of the nervous system, or any structure interfaced thereto, generally referred to herein as a □nervous system component.□ The neurological control system generates neural modulation signals delivered to a nervous system component through one or more neuromodulators, comprising intracranial (IC) stimulating electrodes and other actuators, in accordance with treatment parameters. Such treatment parameters may be derived from a neural response to previously delivered neural modulation signals sensed by one or more sensors, each configured to sense a particular characteristic indicative of a neurological or psychiatric condition.
697 Citations
29 Claims
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1. A method of managing epilepsy, the method comprising:
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measuring one or more electrical signals from a patient'"'"'s brain with one or more intracranial electrodes; receiving the one or more electrical signals in a unit that is implanted intracranially in the patient; extracting parameters from the one or more electrical signals that are indicative of a seizure or predictive of a future seizure, the extracted parameters comprising at least one of a peak-to-valley times, valley-to-peak times, positive phase amplitudes, and negative phase amplitudes; delivering one or more bursts of charge-balanced biphasic stimulus pulses to a patient'"'"'s brain when the extracted parameters are indicative of undesirable electrical activity in the patient'"'"'s brain; monitoring the parameters after delivering the one or more bursts of charge-balanced biphasic stimulus pulses; and delivering one or more subsequent bursts of charge-balanced biphasic stimulus pulses to the patient'"'"'s brain if the monitored parameters indicate that the patient still has undesirable electrical activity in the patient'"'"'s brain. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method of managing epilepsy, the method comprising:
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measuring one or more EEG signals from a patient'"'"'s brain; extracting spike parameters from the one or more EEG signals from the patient'"'"'s brain that are indicative or predictive of a neural state; delivering a first electrical stimulation to a patient when the extracted spike parameters are indicative or predictive of an undesirable neural state, wherein the first electrical stimulation comprises one or more bursts of charge-balanced biphasic stimulus waveforms; monitoring the parameters after delivery of the first electrical stimulation to measure a patient'"'"'s neural state response to the first electrical stimulation; and delivering a second electrical stimulation to the patient that comprises one or more bursts of charge-balanced biphasic stimulus waveforms if the patient'"'"'s neural state response indicates that the patient is still in the undesirable neural state. - View Dependent Claims (18, 19, 20, 21, 22)
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23. A method of managing a neurological condition, the method comprising:
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monitoring one or more signals from a patient; extracting parameters from the one or more signals that are indicative or predictive of future symptomatology; analyzing the extracted parameters; delivering a first electrical stimulation to the patient when the analyzing is indicative or predictive of the future symptomatology; measuring a patient'"'"'s response to the first electrical stimulation by extracting parameters from the one or more signals after the delivering of the first electrical stimulation; and delivering a second electrical stimulation to the patient if the patient'"'"'s response to the first electrical stimulation is still indicative or predictive of the future symptomatology. - View Dependent Claims (24, 25, 26, 27, 28, 29)
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Specification