Patent US4709700A successfully refreshed from Google Patents.
US4709700A
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Electro convulsive therapy method
Assignee: Individual
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Filing: 1985-03-11
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Granted: 1987-12-01
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Expires: 2005-03-11
Abstract
Abstract A method for electro convulsive therapy comprises placing electrodes on the head of the subject and applying a plurality of short pulses of a unidirectional electric current having a constant peak current. The pulses have a duration of 20-100 microseconds and are delivered at a rate of 100-300 pulses per second.
Inventors
- 👤 Vaclav Hyrman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:37
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/18; A61N1/32; A61N1/38
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
47 words
A method for electro convulsive therapy comprising placing electrodes on the head of a subject and applying a plurality of short pulses of an electric current, said pulses having a duration of 20-100 microseconds and being delivered at a rate of 125 to 300 pulses per second.
Claim 2
Independent Claim
47 words
A method for electro convulsive therapy comprising placing electrodes on the head of a subject and applying a plurality of short pulses of an electric current, said pulses having a duration of 20-100 microseconds and being delivered at a rate of 125 to 300 pulses per second.
Claim 3
Dependent Claim
16 words
A method as claimed in claim 1 wherein the rate is generally 200 pulses per second.
Claim 4
Dependent Claim
17 words
A method as claimed in claim 1, wherein the pulse duration is between 40 and 60 microseconds.
References Cited (Backward Citations)
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US2558270A
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US2843129A
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US2909178A
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US3880170A
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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) | 1990-11-30 | 1991-06-01 | 1991-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-11-30 | 1995-06-01 | 1995-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-11-30 | 1999-06-01 | 1999-12-01 | $7700.00 | Window Closed / Lapsed |