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Publication numberCA1192261 A
Publication typeGrant
Application numberCA 448526
Publication date20 Aug 1985
Filing date29 Feb 1984
Priority date29 Feb 1984
Also published asCA1192261A1, US4561426
Publication numberCA 1192261 A, CA 1192261A, CA 448526, CA-A-1192261, CA1192261 A, CA1192261A
InventorsDavid J. Stewart
ApplicantDavid J. Stewart
Export CitationBiBTeX, EndNote, RefMan
External Links: CIPO, Espacenet
Magnetic biological device
CA 1192261 A
Abstract
ABSTRACT OF THE DISCLOSURE
An electromagnetic device for modifying any of the growth, repair or maintenance processes in a predeter-mined 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 var-iations in the spatial-orientation of the induced magnetic field with respect to the local area.
Claims(31)
The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:
1. An electromagnetic device for modifying any of the growth, repair or maintenance processes in a predeter mined 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.
2. A device as claimed in claim 1 wherein said signal is a pulsed signal.
3. A device as claimed in claim 1 wherein said signal is a half-wave-rectified sine wave.
4. A device as claimed in claim 1 wherein said signal has a waveform with a non-zero differential with respect to time.
5. A device as claimed in claim 1 wherein said signal has a waveform with symmetric discontinuities.
6. A device as claimed in claim 1 wherein said coil surrounds a magnetic core.
7. A device as claimed in claim 3 wherein said coil surrounds a magnetic core.
8. A device as claimed in claim 1 wherein said coil surrounds the middle finger of a magnetic core having an "E" shape.
9. A device as claimed in claim 3 wherein said coil surrounds the middle finger of a core having an "E" shape.
10. A device as claimed in claim 1 comprising a treatment head wherein said treatment head comprises said coil and is capable of easy movement in a region over said local area.
11. A device as claimed in claim 3 comprising a treatment head wherein said treatment head comprises said coil and is capable of easy movement in a region over said local area.
12. A device as claimed in claim 8 comprising a treatment head wherein said treatment head comprises said coil and is capable of easy movement in a region over said local area.
13. A device as claimed in claim 9 comprising a treatment head wherein said treatment head comprises said coil and is capable of easy movement in a region over said local area.
14. A device as claimed in claim 10 wherein said treatment head is capable of easy manual manipulation.
15. A device as claimed in claim 11 wherein said treatment head is capable of easy manual manipulation.
16. A device as claimed in claim 12 wherein said treatment head is capable of easy manual manipulation.
17. A device as claimed in claim 13 wherein said treatment head is capable of easy manual manipulation,
18. A device as claimed in claim 14 wherein said treatment head is adapted to be gripped by a human hand in order to aid in easy manual manipulation.
19. A device as claimed in claim 15 wherein said treatment head is adapted to be gripped by a human hand in order to aid in easy manual manipulation.
20. A device as claimed in claim 16 wherein said treatment head is adapted to be gripped by a human hand in order to aid in easy manual manipulation.
21. A device as claimed in claim 17 wherein said treatment head is adapted to be gripped by a human hand in order to aid in easy manual manipulation.
22. A device as claimed in claim 10 further comprising mechanical means for mechanically manipulating said treat-ment head.
23. A device as claimed in claim 3, 8 or 9 further comprising mechanical means for mechanically manipulating said treatment head.
24. A method of using a device as claimed in claim 1, 14 or 22 comprising translating said coil in a region over said local area.
25. A method of using a device as claimed in claim 13, 17 or 21 comprising translating said coil in a region over said local area.
26. A method of using a device as claimed in claim 8, 9 or 12 comprising rotating said coil in the region of said local area.
27. A method of using a device as claimed in claim 13, 17 or 21 comprising rotating said coil in the region of said local area.
28. A method of using a device as claimed in claim 1, 14 or 22 wherein said device is in a negative mode.
29. A method of using a device as claimed in claim 13, 17 or 21 wherein said device is in a negative mode.
30. A method of using a device as claimed in claim 1, 14 or 22 wherein said device is in a positive mode.
31. A method of using a device as claimed in claim 13, 17 or 21 wherein said device is in a positive mode.
Description  (OCR text may contain errors)

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BACKGROI~ND OF THE DISCI,OSURE
This invention relates to electromagnetic devices and particularly to electromagnetic devices for modifying any of the growth, repair or maintenance processes in a 5 predetermined local area of a living body.
Although the process is not fully understood, it is believed that if ~he electro-chemical equilibrium of a cell is somehow placed into a state of imbalance, the body will attempt to correct that imbalance. This correction by the body is believed to be the natural healing process of the body.
In -the past, this cellular equilibrium has been artificially disrupted by means of magnetic fields applied to the subject cells. It is believed that if the magnetic fie:Ld penetrates into the area of the subject cells and if the intensity of the magnetic field is varied, an induced electron movement and concomitant change in voltaic potential in or around the subject cells will result.
In prior art devices, the appropriate magnetic field was created by electricall~ exciting an electric coil with a signal having an asymmetrical waveform. A device that used a signal with a symmetrical waveform would not be as effective.
SUMMARY OF THE INVENTION
Accordingly, one broad aspect of this invention resides in providing an electromagnetic device for modif~ing any of the growth, repair or maintenance processes in a ~' 6~

1 predetermined local area of a living body that utilizes a signa~ having a symmetric waveform to excite a magnetic-field-producing coil.
Another aspect of this invention resides in pro-viding an electromagnetic device for modifying any of the growth, xepair 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~configurati.on, wherein said signal has a substant=
ially-symmetric waveform with a frequency below a~out 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 oE about the same range of magnitude as time variations in the magnetic field at said any given location caused ~y the time variations in the spatial-configuration of said magnstic field.
Further aspects of the invention will become apparent from the ~ollowing description of preferred embodi-ments of the invention.
BRIEF DESCRIPTION OF THE DRAWINGS
In the drawings which illustrate some 2m~0diments and aspects of the invention:

. -2-4 ~ ~

1 Fig. 1 is a schematic drawing of the circuit for an embodiment of the signal generator of the present invention;
Fig. 2 is a schematic drawing of a treatment head for the present invention including an electric coil; and Fig. 3 is a schematic drawing of an output driver for use with this invention.
DET~ILED DESCRIPTION OF TH~ PREFE~RED EMBODIMENTS OF
THE INVENTION
With reference to the drawings, the concepts behind the invention as well as embodiments of the invention will be described. As noted above, it is believed that if the electro-chemical equilibrium oE a cell is somehow dis~
rupted or placed into a state of imbalance, the body will naturally attempt to correct that imbalance and that correction is believed to be the body's natural healing process. Thus, it is believed that if the electro-chemical equilibrium of cells can be temporarily imbalanced for sufficiently long periods, the body's natural healing process-

2~ es can be artificially stimulated to correct the imbalance.
One way to artificially create an imbalance in the electro-chemical equilibrium of cells is to induce electron movement and a concomitant change in the voltaic potential in and around the cells. Such electron movement can be produced by applying to the cells a magnetic field having a time-varying spatial-configuration. As the magnetic intensity of the magnetic field rises and falls with time, 1 an electron movement is believed to ~e induced which in turn causes a change in voltaic potential.
The spatial-configuration of a magnetic field is taken to mean or represent the spatial distri~ution, or all of the values, of the field throughout all points in space at any given instant in ~ime. Thus, if a magnetic field has a time-constant spatial configuration, the value oE the field at any given point in space remains the same or is constant throughout all time. However, all points in space do not necessarily have the same value at any given instant in time.
A time-vaxying spatial-configuration means that the value of the field at any given point in space varies or changes from one instant of time to the next.
In a magnetic field having a time-varying spatial-configuration which varies cyclically, the value of the field at any given point in space varies from one instant to the other but the sequence of values repeats during subsequent cyclic periods.
If a magnetic field is induced by a cyclically-changing current in an electric coil, the induced magnetic field will be cyclical in time. Moreover, if an exciting electric signal in a coil has a symmetrió waveform, the s~atial-configuration of the induced magnetic field will vary cyclically and symmetrically with time. Furthermore, because induced electron movement is proportional to the rate of change in the inducing magnetic field, if the ,.

1 spatial-configura~ion of an inducing magnetic field varies symmetrically with time, arly induced electron movement in or around the subject cells will be equally positive and negative. Thus, any disruption of the electro-chemical S equilibrium o~ the cells occurringduring the positive portion of the cycle will be immediately cancelled or corrected during the negative portion. Therefore, no residual imbalance will result and the natural healing processes of the body will not be artifically stimulated.
On ~he other hand, i~ the exciting signal is asymmetrical, the magnitudes of the positive and negative movement of the electrons will be unequal even though there will be equal energy associated with the positive and negative portions of the cycle. Accordingly, it is post-ulated that if there is a threshold level of energy associated with cellular electrons which must be attained in order to cause some movement of the electrons there will be electron movement in one direction and correspond-ingly less movement in the other direction. Thus, there will be a residual imbalance respecting the electro-chem-ical equilibrium of the cells and there ~ill be artificial stimulation o-f the body's natural healing process in order to correct thls induced imbalance.
Previous research in this area has neglected to consider aspects of the electromagnetic phenomena associated with process-modifying devices other than the variation in time of the spatial-configuration of the magnetic field.

1 The presen-t invention takes advantage of another aspect of the electromagnetic phenomena. Tha-t other aspect is the variation in time of the spatial-orientation of the magnetic field.
sy spatial-orientation is meant the orientation or location in space of the spatial-configuration o:E the magnetic field with respect to some point. Thus, a time-constant spatial-orientation o a magnetic field with respect to the coil means that the spa-tial-configuration of the magnetic field will always appear to be in the same position in space relative to the coil throughout at least the time period of interest.
Further, a time-constant spatial-orienta-tion of a magnetic field with respect to a local area of a body means that the spatial-configuxation of the magnetic field will always appear to be in the same position in space relative to the local area of the body throughout at least the time period of interest. Accordingly, a time-varying spatial-orientation of a magnetic field with respect to a -local area of a body means.that the position or orientation of the spati.al-configuration of the magnetic field will vary or change in time with respect to the local area of the body even though the position of the spatial-configur-ation may remain time-constant with respect to the inducing coil.
The present invention utilizes the discovery that the electro-chemical equilibrium of the cells in a local 1 area of a living body can be placed into a state of im-balance if the spatial-configuration of the magne-tic field is symmetrically varied in time and at the same time the spatial-orientation of the magnetic field with respect to the local area is varied in time such that the time varia-tions in the magnetic field at a given location in said local area caused by the time variations in the spatial-orie~tation of the magnetic field wi-th respect to the local area are of about the same range of magnitude as the time variations in the magnetic field at the given location in said local area caused by time variations in the spatial-configuration of the magnetic field~
In a preferred embodlment of this invention, time variations in the spatial-orientation of the magnetic field with respect to a local area are caused by manually trans--]ating the inducing coil in the same plane over the area of interest. By translation is meant movement of ~he coil in a plane approximately parallel to the surface of the body over the local area of the body and having the coil aligned for maximum field penetration into the local area.
Alternatively or additionally, time variations in the spatial-orientation of the magnetic field with respect to the local area can be caused, in some instances, by rotation of the coil in a plane approximately parallel to the surface of the body over the local area of the body and having the coil aligned for maximum field penetration into the local area. Rotation is effective only when the ~iL~

1 spatial-conEiguration of the ma~netic field is non-symmet-rical in the plane of rotation, for instance, when the coil surrounds the middle finger of an "E"-shaped core as described below.
In a preferred embodiment of the invention, a treatment head is utilized. The treatmen-t head comprises at least the coil. Usually, the treatment head will be a separate unit from the means for generating the exciting signal~ However, with miniturization, it is possible that the means for generating the exciting signal would be included in the treatment head. In any case, the treatment head is electrically connected to the means for generating the exciting signal. Preferable this electrical connection is made by means of relatively-long, flexible electric wires or cables.
The treatment head can be made of molded plastic or any other suitable material. Also, the treatment head can be adapted, either during any molding process or later, to be conveniently gripped by a human hand. This adaption is intended to aid in easy manual manipulation of the treatment head.
Alternatively, the treatment head can be adapted to be mechanically manipulated by any suitable mechanical means.
~hether the coil or treatment head is translated or rotated either manually or mechanically, the movement of the coil or treatment head should be such as to cause 1 time varia-tions in said magne-tic field a-t any given location in said local area which are of about the same range of magnitude as time variations in the magnetic field a-t said any given location caused by the time variations in the spatial-configuration of said magnetic field.
Improved resul-ts can be achieved hy winding the coil around a magnetic core. Particularly improved results are obtained if the coil is wound around the middle finger of a magnetic core formed in the shape of an "E".
A preferred embodiment of this invention includes a means to generate a pulsed symmetric signal and, in particular, a half-wave-rectified sine wave.
It lS believed that any symmetrical signal having a waveform with a non-zero differential with respect to time would be suitable. Similarly , any symmetrical signal having symmetric discontinuities would be suitable.
It is to be noted that the suitable signal need not be generated exclusively by the signal generating means p se. It is possible that a signal generated by the signal generating means could be suitably modified by the inherent electrical characteristics of the remainder of the device to produce a suitable signal.
Shown in Fig. 1 is a schematic diagram illus-trat-lng a wave-generating circuit capable of producing a half-wave-rectified sine wave. Shown below in Table I are typical parts used in the configuration of the circuit illustrated in Fig. 1.

Cl Capacitor, Electrolytic, 10 ~fd. 16V
C2 Capacitor, Met. Film, 1.0 ~fd. 63V
C3 Capacitor, Met. Film, .l ~fd. lOOV
C4 Capacitor, Electrolytic, 4.7 ~fd. 63V
C5,6 Capacitor, Electrolytic, 1.0 ~fd. 63V
R1 Resistor, Carbon Film, 47K ohm ~ watt R2,4 Resistor, Carbon Film, 1~0 K ohm ~ watt R3 Resistor, Carbon Film, 200 ohm ~ watt R5 Resistor, Carbon Film, 13K ohm ~ watt lC1 EXAR 2206, Waveform Generator lC2 Motorola 7812, Voltage Regu]ator 12 V 1 amp Jl PC Connector, 44 pin It has been found that signals with frequencies from about 1 to 100 Hertz are effective. Preferably, signals with frequencies fram about 3 to 50 Hertz are used.
However, it is to be understood that it i5 possible to use higher or lower frequencies depending on the effectiveness to a particular local area of a particular body.
Shown in Fig. 2 is a schematic of a treatment head incorporating an electric coil. The ~reatment head is indicated by dashed lines. The coil in the treatment head can typically be made from #22 wire, enamelled, with about 600 turns. Also an "E" core can be used.
The core should be capable of developing a m~nimllm of about 700 gauss at a location of about 1 centimeter away from the coil. It has been found that a coil capable of ,~

6~

1 developing 15~0 gauss at a comparable distance is effective.
It is to be understood, however, that a higher level may also be effective.
Shown in Fig. 3 ls a typical output driver to be used with the present invention. Shown below in Table II
are typical parts used in the construction of the circuit illustrated in Fig. 30 TABLE II

C7 Capacitor, Electrolytic, 4.7 ~fd. 63V
C8 Capacitor, Met. Film, .0033 ~fd, 630V
C9 Capacitor, Electrolytic, 1.5 ~fd. 63V
C10 Capacitor, Electrolytic, 100 ~fd. 63V
R7 Resistor, Carbon Film, 2.OM ohm ~ watt R8 Resistor, Carbon Film, llOK ohm ~ watt R9 Resistor, Carbon Film, 33K ohm ~ watt R10,12 Resistor, Carbon Film, lOK ohm ~ watt Rll Resistor, Carbon Film, l.OK o~n ~ watt VR2 Resistor, Variable, 4.7K ohm, .1 watt TRl Transistor, Power Darlington 0 lC3 SG 3524 , Pulse Width Regulator In operation, the device of the pre~ent invention preferably should be used for about an average of 20 minutes per day with respect to a specific local area.
It ~as ~een ~ound that the~e are two possible modes of operation with respect to the present invention if the current in the coil flows in only one direction. There is a negative mode and a positive mode. It has been found that -1 1~

26~

1 immediately after an injury has occurred at a local area, treatment w~th th~ pre~ent invention i.n the. negative mode is more effective than treatment in the positi.ve mode.
The negative mode is more effectl~ve while acute symptoms persist after an injury has occurred, On the other hand, i.f an injury displays chronic symptoms, it is more effective to use the devi`ce of the invention in the positi.ve mode~
By negative mode is meant that if the north-seeking end of a compass needle is exposed to the magnetic field developed by the coil in the area of effective use, the north-seeking end of the compass needle will be attracted to the coil.
On the other hand, in the positive mode, the south-seeking end of the compass needle will be attracted to the coil.
The mode in which the device of the present invention is used is determined by the direction of the current flow through the coil.
It will be understood that the specific circuits and materials described herein are for illustration only and that the invention is not limited to those embodiments.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
EP0223354A2 *11 Sep 198627 May 1987Elizabeth A. RauscherApparatus for modulating brain signals through an external magnetic field to reduce pain
EP0223354A3 *11 Sep 198626 Jul 1989Elizabeth A. RauscherNon-invasive method and apparatus for modulating brain signals through an external magnetic field to pace the heart and reduce pain
Classifications
International ClassificationA61N2/02, A61N2/12
Cooperative ClassificationA61N2/12, A61N2/02
Legal Events
DateCodeEventDescription
21 Aug 2002MKECExpiry (correction)
29 Feb 2004MKEXExpiry