US4338945A
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US
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Method and randomized electrical stimulation system for pain relief
Assignee: CLINICAL ENGR LABS Ltd
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Filing: 1979-03-02
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Granted: 1982-07-13
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Expires: 1999-03-02
Abstract
Abstract System for generating electrical pulses for relieving the pain of the patient comprising a pulse generator and a controller for modulating the parameters of the output pulses of the pulse generator to fluctuate in accordance with the 1/f rule; i.e. the spectral density of the fluctuation varies inversely with the frequency.
Inventors
- 👤 Yukio Kosugi
- 👤 Jun Ikebe
- 👤 Kintomo Takakura
- 👤 Yoriaki Kumagai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:49
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/18; A61N1/32; A61N1/36; A61N1/36014; A61N1/36021; A61N1/3605; A61N1/3606; A61N1/36071; A61N1/36017
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
81 words
An electrical pulse generation system to be used for the stimulation of dorsal column and peripheral nerves, respectively, for pain relief comprising a pulse generator, means having output electrodes constituting means adapted to be applied to central and peripheral nerve areas of a patient for automatically continuously randomizing parameters of output pulses of said pulse generator to generate a series of pulses having a specified power spectrum so as to ceaselessly provide fresh sensations to a nervous system through said electrodes.
Claim 2
Dependent Claim
81 words
An electrical pulse generation system to be used for the stimulation of dorsal column and peripheral nerves, respectively, for pain relief comprising a pulse generator, means having output electrodes constituting means adapted to be applied to central and peripheral nerve areas of a patient for automatically continuously randomizing parameters of output pulses of said pulse generator to generate a series of pulses having a specified power spectrum so as to ceaselessly provide fresh sensations to a nervous system through said electrodes.
Claim 3
Dependent Claim
21 words
The electrical pulse generation system as set forth in claim 1, wherein the series of pulses have a 1/f power spectrum.
Claim 4
Dependent Claim
46 words
The electrical pulse generation system as set forth in claim 1, wherein said controller means comprises a quasi-random generator and a 1/f filter for generating said series of pulses with a 1/f power spectrum so as to ceaselessly provide the fresh sensations to the nervous system.
Claim 5
Dependent Claim
74 words
An electrical pulse generation system to be used for the stimulation of dorsal column and peripheral nerves, respectively, for pain relief comprising a pulse generator, means having output electrodes constituting means adapted to be applied to central and peripheral nerve areas of a patient for generating a series of pulses of the pulse generator to fluctuate in accordance with the 1/f rule wherein the spectral density of the fluctuation varies inversely with the frequency.
Claim 6
Dependent Claim
74 words
An electrical pulse generation system to be used for the stimulation of dorsal column and peripheral nerves, respectively, for pain relief comprising a pulse generator, means having output electrodes constituting means adapted to be applied to central and peripheral nerve areas of a patient for generating a series of pulses of the pulse generator to fluctuate in accordance with the 1/f rule wherein the spectral density of the fluctuation varies inversely with the frequency.
Claim 7
Dependent Claim
91 words
An electrical pulse generation system to be used for the stimulation of dorsal column and peripheral nerves, respectively, for pain relief comprising a pulse generator, means for providing output pulses of the pulse generator with a sequence of durations, within which the pulse rate is constant, to fluctuate in accordance with the 1/f rule wherein the spectral density of the fluctuation varies inversely with the frequency, said means having electrode means for applying said sequence of durations to a patient for applying said stimulation of the dorsal column and peripheral nerves.
Claim 8
Dependent Claim
91 words
An electrical pulse generation system to be used for the stimulation of dorsal column and peripheral nerves, respectively, for pain relief comprising a pulse generator, means for providing output pulses of the pulse generator with a sequence of durations, within which the pulse rate is constant, to fluctuate in accordance with the 1/f rule wherein the spectral density of the fluctuation varies inversely with the frequency, said means having electrode means for applying said sequence of durations to a patient for applying said stimulation of the dorsal column and peripheral nerves.
Claim 9
Independent Claim
55 words
A method for pain relief by stimulation of the dorsal column and peripheral nerves, comprising the steps of generating continuously randomized parameters comprising a series of pulses having a specified power spectrum so as to ceaselessly provide fresh sensations to a nervous system, applying said series of pulses to the dorsal column and peripheral nerves.
Claim 10
Independent Claim
55 words
A method for pain relief by stimulation of the dorsal column and peripheral nerves, comprising the steps of generating continuously randomized parameters comprising a series of pulses having a specified power spectrum so as to ceaselessly provide fresh sensations to a nervous system, applying said series of pulses to the dorsal column and peripheral nerves.
Claim 11
Dependent Claim
32 words
The method as set forth in claim 6, wherein the series of pulses fluctuate in accordance with the 1/f rule wherein the spectral density of the fluctuation varies inversely with the frequency.
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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) | 1985-07-12 | 1986-01-11 | 1986-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-07-12 | 1990-01-11 | 1990-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-07-12 | 1994-01-11 | 1994-07-13 | $7700.00 | Window Closed / Lapsed |