US4561426A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic biological device
Assignee: Individual
•
Filing: 1984-09-27
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Granted: 1985-12-31
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Expires: 2004-09-27
Abstract
Abstract An electromagnetic device for modifying any of the growth, repair or maintenance processes in a predetermined local area of a living body by utilizing a signal having a symmetric waveform to excite a coil and thereby induce a magnetic field and at the same time manually or mechanically manipulating the coil so as to cause time variations in the spatial-orientation of the induced magnetic field with respect to the local area.
Inventors
- 👤 David J. Stewart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:36
CPC Classifications
A; A61; A61N; A61N2/00; A61N2/02; A61N2/12
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
166 words
An electromagnetic device for modifying any of the growth, repair or maintenance processes in a predetermined local area of a living body comprising: a coil capable of inducing a magnetic field wherein the magnetic field has a time-varying spatial-configuration and a time-constant spatial-orientation with respect to said coil; means for generating an electrical signal capable of exciting said coil so as to induce a magnetic field having a time-varying spatial-configuration, wherein said signal has a substantially-symmetric waveform with a frequency below about 100 Hertz; and wherein, when said device is in use, said coil is adapted such that the spatial-orientation of said magnetic field with respect to said local area is capable of being varied in time, thereby causing time variations in said magnetic field at any given location in said local area which are of about the same range of magnitude as time variations in the magnetic field at said any given location caused by the time variations in the spatial-configuration of said magnetic field.
Claim 2
Dependent Claim
166 words
An electromagnetic device for modifying any of the growth, repair or maintenance processes in a predetermined local area of a living body comprising: a coil capable of inducing a magnetic field wherein the magnetic field has a time-varying spatial-configuration and a time-constant spatial-orientation with respect to said coil; means for generating an electrical signal capable of exciting said coil so as to induce a magnetic field having a time-varying spatial-configuration, wherein said signal has a substantially-symmetric waveform with a frequency below about 100 Hertz; and wherein, when said device is in use, said coil is adapted such that the spatial-orientation of said magnetic field with respect to said local area is capable of being varied in time, thereby causing time variations in said magnetic field at any given location in said local area which are of about the same range of magnitude as time variations in the magnetic field at said any given location caused by the time variations in the spatial-configuration of said magnetic field.
Claim 3
Dependent Claim
14 words
A device as claimed in claim 1 wherein said signal is a pulsed signal.
Claim 4
Dependent Claim
15 words
A device as claimed in claim 1 wherein said signal is a half-wave-rectified sine wave.
Claim 5
Dependent Claim
21 words
A device as claimed in claim 1 wherein said signal has a waveform with a non-zero differential with respect to time.
Claim 6
Dependent Claim
16 words
A device as claimed in claim 1 wherein said signal has a waveform with symmetric discontinuities.
Claim 7
Dependent Claim
14 words
A device as claimed in claim 3 wherein said coil surrounds a magnetic core.
Claim 8
Dependent Claim
21 words
A device as claimed in claim 3 wherein said coil surrounds the middle finger of a core having an "E" shape.
Claim 9
Dependent Claim
31 words
A device as claimed in claim 7 comprising a treatment head wherein said treatment head comprises said coil and is capable of easy movement in a region over said local area.
Claim 10
Dependent Claim
17 words
A device as claimed in claim 8 wherein said treatment head is capable of easy manual manipulation.
Claim 11
Dependent Claim
28 words
A device as claimed in claim 9 wherein said treatment head is adapted to be gripped by a human hand in order to aid in easy manual manipulation.
Claim 12
Dependent Claim
22 words
A method of using a device as claimed in claim 9 comprising translating said coil in a region over said local area.
Claim 13
Dependent Claim
22 words
A method of using a device as claimed in claim 10 comprising translating said coil in a region over said local area.
Claim 14
Dependent Claim
22 words
A method of using a device as claimed in claim 9 comprising rotating said coil in the region of said local area.
Claim 15
Dependent Claim
22 words
A method of using a device as claimed in claim 10 comprising rotating said coil in the region of said local area.
Claim 16
Dependent Claim
19 words
A method of using a device as claimed in claim 9, wherein said device is in a negative mode.
Claim 17
Dependent Claim
19 words
A method of using a device as claimed in claim 10 wherein said device is in a negative mode.
Claim 18
Dependent Claim
19 words
A method of using a device as claimed in claim 9 wherein said device is in a positive mode.
Claim 19
Dependent Claim
19 words
A method of using a device as claimed in claim 10 wherein said device is in a positive mode.
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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) | 1988-12-30 | 1989-07-01 | 1989-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-30 | 1993-07-01 | 1993-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-30 | 1997-07-01 | 1997-12-31 | $7700.00 | Window Closed / Lapsed |