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Electroconvulsive therapy apparatus and method for automatic monitoring of patient seizures
Assignee: SOMATICS Inc A CORP OF
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Filing: 1988-10-14
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Granted: 1989-10-17
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Expires: 2008-10-14
Abstract
Abstract A method and system in electroconvulsive therapy (ECT) to automatically monitor and display the occurrence and the duration of the seizure activity generated during the administration of the electrically induced therapeutic seizures. The ECT device includes a special-purpose electroencephalograph (EEG) system to detect a specific EEG parameter (e.g. integrated voltage) of the electrically induced EEG seizure. The detected integrated voltage is converted to digital data and compared to a threshold reference value previously obtained from the same patient. The operator is informed by an electronic alphanumeric elapsed time display or indications on a moving strip chart paper record, or oscilloscope CRT screen, when the parameter has crossed the predetermined threshold reference value and how long since the termination of the ECT the parameter has taken to reach the reference value.
Inventors
- 👤 Richard Abrams
- 👤 Conrad M. Swartz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:07
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/18; A61N1/32; A61N1/38
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
177 words
A method in electroconvulsive therapy ECT to monitor the termination of an induced seizure in a patient, the method including the steps of: employing an ECT device, removably securing a plurality of electrodes on the head of the patient and applying electricity through the electrodes in an electroconvulsive therapy session to induce seizure, and detecting the electrical brain waves of the patient in an electroenocephalographic EEG device by amplifying the brain waves detected by at least one electrode removably secured to the head of the patient; establishing and storing in system memory a baseline reference of a brain wave parameter, detecting the patient brain waves to commence the monitoring of the termination of the seizure in the range of 1-30 seconds after ceasing the said application to induce seizure, automatically determining the termination of seizure as determined by the monitored brain wave parameter declining to the said established reference, displaying said termination of seizure, and including the step of measuring and displaying the elapsed time from the commencement of said monitoring until the said termination of seizure.
Claim 2
Independent Claim
177 words
A method in electroconvulsive therapy ECT to monitor the termination of an induced seizure in a patient, the method including the steps of: employing an ECT device, removably securing a plurality of electrodes on the head of the patient and applying electricity through the electrodes in an electroconvulsive therapy session to induce seizure, and detecting the electrical brain waves of the patient in an electroenocephalographic EEG device by amplifying the brain waves detected by at least one electrode removably secured to the head of the patient; establishing and storing in system memory a baseline reference of a brain wave parameter, detecting the patient brain waves to commence the monitoring of the termination of the seizure in the range of 1-30 seconds after ceasing the said application to induce seizure, automatically determining the termination of seizure as determined by the monitored brain wave parameter declining to the said established reference, displaying said termination of seizure, and including the step of measuring and displaying the elapsed time from the commencement of said monitoring until the said termination of seizure.
Claim 3
Dependent Claim
27 words
A method in electroconvulsive therapy as in claim 1 and displaying the lack of a seizure by failure to reach said reference within a selected time period.
Claim 4
Dependent Claim
26 words
A method in electroconvulsive therapy as in claim 1 wherein the parameter is integrated voltage over a selected time period in the range of 0.5-3 seconds.
Claim 5
Dependent Claim
17 words
A method in electroconvulsive therapy as in claim 3 wherein the selected period is about one second.
Claim 6
Dependent Claim
21 words
A method in electroconvulsive therapy as in claim 1 wherein said displaying of the elapsed time uses an LED time display.
Claim 7
Dependent Claim
28 words
A method in electroconvulsive therapy as in claim 1 wherein two detecting EEG electrodes are applied to the head of the patient on opposite sides of the head.
Claim 8
Dependent Claim
57 words
A method in electroconvulsive therapy as in claim 1 including the step of establishing the reference prior to said ECT therapy by measuring said parameter during at least two selected time periods, during which said periods the parameter is within a selected percentage of one period compared to another period, and averaging said parameter over said periods.
Claim 9
Independent Claim
200 words
A system for electroconvulsive therapy ECT to monitor the termination of an induced seizure in a patient, the system including: an ECT device including a plurality of electrodes removably securable on the head of the patient and means for applying electricity through the electrodes in an electroconvulsive therapy session to induce seizure, and an electroencephalograph EEG means to detect electrical brain waves of the patient including means to amplify the brain waves and connected thereto, at least one electrode adapted to be removably secured to the head of the patient; system memory means to establish and store in system memory a baseline reference of a brain wave parameter, timer means to commence monitoring of brain waves for the termination of the seizure in the range of 1-30 seconds after ceasing the said application to induce seizure, measurement means for automatically measuring the termination of seizure as determined by the decline of the monitored brain wave parameter to the said baseline reference, display means to display said termination of seizure, an elapsed time means for measuring the time from said commencement of monitoring until the brain wave parameter decreases to said baseline reference, and display means for displaying said elapsed time.
Claim 10
Independent Claim
200 words
A system for electroconvulsive therapy ECT to monitor the termination of an induced seizure in a patient, the system including: an ECT device including a plurality of electrodes removably securable on the head of the patient and means for applying electricity through the electrodes in an electroconvulsive therapy session to induce seizure, and an electroencephalograph EEG means to detect electrical brain waves of the patient including means to amplify the brain waves and connected thereto, at least one electrode adapted to be removably secured to the head of the patient; system memory means to establish and store in system memory a baseline reference of a brain wave parameter, timer means to commence monitoring of brain waves for the termination of the seizure in the range of 1-30 seconds after ceasing the said application to induce seizure, measurement means for automatically measuring the termination of seizure as determined by the decline of the monitored brain wave parameter to the said baseline reference, display means to display said termination of seizure, an elapsed time means for measuring the time from said commencement of monitoring until the brain wave parameter decreases to said baseline reference, and display means for displaying said elapsed time.
Claim 11
Dependent Claim
25 words
A system for electroconvulsive therapy as in claim 8 wherein the ECT device, EEG means and the display means are in one electrically integrated system.
Claim 12
Dependent Claim
32 words
A system for electroconvulsive therapy as in claim 8 and means for determining and displaying the lack of a seizure by failure to reach said established reference within a selected time period.
Claim 13
Dependent Claim
17 words
A system in electroconvulsive therapy as in claim 10 wherein the selected period is about one second.
Claim 14
Dependent Claim
26 words
A system in electroconvulsive therapy as in claim 8 wherein the parameter is integrated voltage over a selected time period in the range of 0.5-3 seconds.
Claim 15
Dependent Claim
18 words
A system in electroconvulsive therapy as in claim 8 wherein the display means is an LED time display.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-10-16 | 1993-04-17 | 1993-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-16 | 1997-04-17 | 1997-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-16 | 2001-04-17 | 2001-10-17 | $7700.00 | Window Closed / Lapsed |