CA1237783A - Electromagnetic therapeutical device - Google Patents
Electromagnetic therapeutical deviceInfo
- Publication number
- CA1237783A CA1237783A CA000436562A CA436562A CA1237783A CA 1237783 A CA1237783 A CA 1237783A CA 000436562 A CA000436562 A CA 000436562A CA 436562 A CA436562 A CA 436562A CA 1237783 A CA1237783 A CA 1237783A
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- CA
- Canada
- Prior art keywords
- coil
- electromagnetic
- capacitor
- electric current
- switching means
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N2/00—Magnetotherapy
- A61N2/02—Magnetotherapy using magnetic fields produced by coils, including single turn loops or electromagnets
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N2/00—Magnetotherapy
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N2/00—Magnetotherapy
- A61N2/004—Magnetotherapy specially adapted for a specific therapy
- A61N2/008—Magnetotherapy specially adapted for a specific therapy for pain treatment or analgesia
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Radiology & Medical Imaging (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Chemical & Material Sciences (AREA)
- Hospice & Palliative Care (AREA)
- Medicinal Chemistry (AREA)
- Pain & Pain Management (AREA)
- Magnetic Treatment Devices (AREA)
- Generation Of Surge Voltage And Current (AREA)
Abstract
ELECTROMAGNETIC THERAPEUTICAL DEVICE
ABSTRACT OF THE INVENTION:
The electromagnetic therapeutical device which is the subject of this patient application is designed for performing therapy on the affected part of the human body by application of a fluctuated magnetic field generated from the coil in which voltage charged in the capacitor is caused to discharge by the continuity of the switching element and a pulsing electric current waveform whose relative time ratio of rise and fall is above 5 : 1 which is caused to flow through the coil to generate the electromagnetic field whose waveform is similar to that of the electric current in the coil.
This invention relates to an electromagnetic therapeutical device for performing therapy on affected parts of the human body by application of a fluctuating electromagnetic field generated from the coil.
ABSTRACT OF THE INVENTION:
The electromagnetic therapeutical device which is the subject of this patient application is designed for performing therapy on the affected part of the human body by application of a fluctuated magnetic field generated from the coil in which voltage charged in the capacitor is caused to discharge by the continuity of the switching element and a pulsing electric current waveform whose relative time ratio of rise and fall is above 5 : 1 which is caused to flow through the coil to generate the electromagnetic field whose waveform is similar to that of the electric current in the coil.
This invention relates to an electromagnetic therapeutical device for performing therapy on affected parts of the human body by application of a fluctuating electromagnetic field generated from the coil.
Description
~23'7783 FIELD OF THE INVENTION
It has been known that tile magnetism is effective for therapy of affected parts for such problems as stiffness of the siloulders, pains in the waist, extreme sensitivity to cold and the like. Roy idea behind such therapy is considered to be that when a maglletic field is applied to the human body, the electromotive force is generated in the human body, and electro-chemical changes are caused to occur, by the electromotive force, in the human body weakly consists of chemical substances which generate the ions and increase the ions in the blood which change the function of the autonomic nerve system and facilitate the smooth circulation of the blood. The foregoing -facts are substalltiated by over 20 years of study by Dr. Couch Nakagawa of Issues Hospital of Japan.
BRIEF DESCRIPTION OF THE DRAWINGS:
Figures i and i are waveform diagram for illustration of conventional magnetic therapeutical device output.
Err 2 is an illustration showing an example of the use of the electromagnetic therapeutical device of this invention.
Figure 3 is a circuit diagram of the pulse generator for producing the pulse like electromagnetic field in the electromagnetic therapeutical device of this invention.
Err is a waveform diagram for illustration of the electromagnetic therapeutical device of this invention.
3'î'783 BACKGROUND OF TIRE INVENTION:
In order to generate the necessary electromotive force by means of a magnetic field, it is necessary to vary the magnetic field working on the human body being treated or to move the body within the stationary magnetic field.
Heretofore, with magnetic therapeutical device of this kind, devices involving fixing permanent magnets fabricated from metal granules to the affected part of the body by adhesive material, and a device for generating a fluctuating magnetic field by means of an electric current with a power source frequency of 50 - 60 Isles for commercial use passed through a coil wound on an iron core have been proposed and are in use.
However, since the former device uses a permanent magnet, there is entirely no fluctuation of the magnetic field in relationship to the affected part of the body being treated body, and accordingly, when the blood flows through the blood vessel in the fixed magnetic field, the electromotive force is generated in tile inner wall of the blood vessels, but the generated electromotive force is insignificant. For this reason, the therapeutical effect is low and there is no immediate 123'7'783 effect.
On the other hand, in the latter magnetic therapeutical device utilizing a power source of 100 V at 50/60 Ho, since the electric current flowing in the coil has a sine wave configuration that changes by a function of time as shown in Fig. i, the magnetic field generated from the coil takes a similar waveform to that of the electric current. Accordingly, when the sine wave configuration electric current is made to flow in the coil whereby the resulting line of magnetic force passes through the part of the body being treated, electromotive force of the sine wave whose phase is different by 90 as shown in Fig. i is generated by electromagnetic induction, but the voltage waveform is symmetric vertically so that even if the ions are generated by electro-chemical action, the resulting cations and anions are neutralized each other and thus electro-chemical reaction helpful for improving the therapeutical effect on the human body cannot be anticipated.
Also, although the latter magnetic therapeutical device has been approved as a therapeutical device by Japan's Ministry of Health and Welfare, the specification is such that the surface magnetic flux density is 800 gauss + 50~ (B Max), rated application time is 30 minutes, rated capacity is 260/210 VA, and rated power source is 100 V 50/60 Ho. As will be obvious from the foregoing specification, the time of continuous use of the therapeutical device is 30 minutes. When used longer than the specified time, overheating condition which ~3'7783 brings about a danger of causing burns to the body becomes a problem. The reason for this is that the electric current flowing in the coil is always a relatively strong current of 2.67 amperes.
Also, heretofore, the therapy of applying electromagnetic fields of ultra-shortwave type to the human body is well known.
Since these ultra-shortwave therapeutical devices have a very high frequency as compared with the frequency of commercial power source, a strong electromotive force can be generated and applied to the affected part. However, the body is comprised of biochemical substances. Thus, even if ions are generated in the human body by the electro-chemical action when the frequency is excessively high, the waveform of the electromotive force generated is substantially the same with the one shown in Fig. i, so that both the cations and anions produced by the electromotive force are immediately neutralized, and only thermotherapeutical effects can be anticipated.
In order to generate therapeutic electro-chemical reaction in the human body effectively, the electromotive force to be induced in the affected part of the body being heated should be a low frequency (below 20 Ho) with a DC pulse.
OBJECT OF THE INVENTION:
This invention has solved the conventional prior art problems described above. The primary object of this invention is to provide a magnetic therapeutical device providing both ~'7'7~
significant and rapid therapeutical effect.
Another object of this invention is to provide electromagnetic therapeutical device free of overheating even if used for long hours and consuming relatively low electric power.
SUMMARY OF THE INVENTION:
According to the present invention, therefore, there is provided an electromagnetic therapeutic device comprising:
a transformer having primary and secondary windings, the primary winding being connectable to a conventional source of AC
power; a voltage doubler rectification system connected to the secondary winding of the transformer; a capacitor connected to an output of the rectification circuit; a coil for generating an electromagnetic field; switching means having a frequency of 4 to I Ho connected in series with the coil, the series coupled switching means and coil being directly coupled in parallel with said capacitor the switching means causing the discharge of an electric chary from the capacitor directly to the coil when in its "on" condition; and oscillator means for venerating a signal to activate the switching means.
-`" lZ3`~ 3 DESCRIPTION OF PREFERRED EMBODIMENTS:
The preferred embodiments of this invention Jill be described by referring to the dra~incJs It Fig 2, tile ring-like coil 1 of the electromagnetic therapeutical device embodied in this invention as slipped over the knee portion 2 of the leg, and the pulsing electric current (refer to jig. I) from the pulse generator 3 was supplied to the coil 1 In this case, when the pulsing electron magnetic field of about 8 Isles assay applied to the knee portion, the blood circulation of the knee portion 2 was quickly enhanced such that even for a brief period of this patients normally unbendable knee the knee could be easily bent For the stiffness of the shoulders, tile coil 1 was applied to tile shoulders, tile nape, and also, in order to relieve a pain in the waist, it was applied to tile waist For stomach ache or diarrhea, the coil 1 was applied to the surface of the stomach ennui it alas applied to a part where a pain was felt and trouble with blood circulation occurred, there was a marked therapeutical effect. jig 3 Sluice the actual circuit diagram of the pulse generator 3 that is composed of the power source transformer 11 connected Jo tile commercial power souse 10 of 100 V, tile voltac3e doubler circuit 12 connected to the secondary side of the transformer 11, tile capacitor 13 for charging the double voltage, and relaxation oscillation circuit 15 for triggering ~237783 the thruster 14 connected in series to the coil 1.
- A plurality of taps To - To for handling the output voltage of 25 to 100 V are provided on the secondary winding ha of the power source transformer 11, and the output voltage adjusted to 25 to 100 V is produced and flows through the output terminals tic and lid by the switching action of the slid able element fib from the tap To to the tap To.
Also, the voltage doubler circuit 12 is composed of capacitor aye and diodes 12b and 12c for half-wave rectification, and the double voltage of 50 to 280 V is generated according to the output voltage of the transformer 11 from the voltage doubler circuit 12, and this output voltage charges capacitor 13. Also, relaxation oscillation circuit 15 is provided with variable resistor aye and capacitor 15b connected in series with variable resistor aye, and this series circuit is connected to a half wave rectification circuit 16 consisting of diode aye and capacitor 16b connected to both terminals of secondary winding ha of the power source transformer 11. The gate cathode of thruster 14 is connected to both terminals of the capacitor 15b by means of the trigger diode 15c. The frequency of relaxation oscillation circuit 15 is adjusted to 4 to 20 Ho by varying resistance of variable resistor aye.
The operation of the embodiment of this invention having the foregoing construction will be described in the following.
When the power source switch SW is put in "on" position, the voltage, according to the position of the slid able element 123'7~83 fib on the taps To - To, flows at the output terminals tic and lid of the transformer 11. The voltage is converted to the double voltage with the half-wave rectified by capacitor aye and diodes 12b and 12c, and then is charged in the capacitor 13.
The output voltage of rectification circuit 16 charges the capacitor 15b through the variable resistor aye, and charges capacitor 15b. When this charge exceeds the trigger voltage of the trigger diode 15c, the trigger diode 15c is activated, and the trigger pulse is applied to the gate of the thruster 14. When the trigger pulse is applied, the thruster 14 is activated, and the electric charge accumulated in the capacitor 13 is discharged through the coil 1, and the coil 1 generates the pulsing electromagnetic field. When the number i of windings of coil 1 are about 40 turns with its diameter of about 17 cm, a strong electric current reaching 25 A flows at the peak. The time constant OR = T of the variable resistor aye and the capacitor 15b can determine the frequency of the resulting pulses, and the frequency generated can be changed by the adjustment of the variable resistor aye.
Fig. I shows the waveform of the electric current flowing in the coil 1, and the resulting change of the magnetic field of the coil 1 against the affected part of the body being treated becomes basically similar to Fig. I. Also, Fig.
I shows the waveform of the electromotive force generated in the effected part by the working of the pulsing magnetic ~23'7~33 field on the affected part as shown in Fig. I, and as it will be obvious from the foregoing, the waveform of the electron motive force becomes asymmetric vertically, centering around the reference line I, and moreover the difference of the upper level above the reference line is greater than the lower level from the reference line by more than ten times, and also, the areas of both of the upper level and the lower level are equal.
Accordingly, in case the secondary side on which the electromagnetic field of the coil works is like linear load such as copper wire, alternating positive and negative potential of the electromotive force is subject to cancel each other, but, the affected part of the body being treated at the secondary side on which the magnetic field of the coil 1 works is not a linear load with pure resistance but rather is a non-linear load which has a threshold value. For this reason, and when the voltage above V TO as shown in Fig. I, namely, when voltage above the threshold value of the affected part in contact with the device (several ten - several hundred my per cell) is applied, the electric current will flow. As a result, voltage shown in Fig. I is generated in the affected part, and the waveform of the upper part only exceeds the threshold value V TO of the affected part being treated so that the DC pulse electric current flows to the affected part as shown in Fig. I.
As described in the foregoing, a DC pulse electric ~23~7~33 current car be generated in the part of the body being treated,`
which causes the electro-chemical reactions in the affected part thereby demonstrating high significant therapeutic effects in the affected part of the body, especially in cases where imperfect circulation, etc. are involved.
The most preferable embodiment of this invention will be described in the following.
The number of winding of the coil 1 was set at 40 turns (diameter 17 cm), and the waveform was selected so that the rise time of the electric current flowing in the coil 1 was set at 0.1 msec, and the fall time was set at 1 msec, and the time ratio of the rise and the fall was 1 : lo (refer to Fig. I), and the period of the triangular electric current flowing in coil 1 was set at 8 I by relaxation oscillation circuit 15, and the charge voltage of the capacitor 13 was set at 280 V.
A coil 1 operated in the foregoing condition was applied to the knee of a patient suffering from particular rheumatism of the knee as shown in Fig. 1, and therapy was carried out for several periods of ten minutes whereby upon the previously unbendable knee became bendable. Such cases occurred in large numbers. Examples of the effects of the therapy described above hove been substantiated by reports from patients which utilized the electromagnetic therapeutical device of this invention. Also, the reasons for the foregoing therapeutical effect are that the electromotive force generated in treated !
~23`~
part of the body is far larger than that of the conventional therapy systems and that the pulse is a DC pulse.
The result of measurements of the electromotive force generated in the body by this invention and those for conventional systems in which the commercial frequency of 50 to 60 Ho is applied to the coil to generate the fluctuating magnetic field will be described in the following.
Several 9-turn coils were prepared. A diode and a capacitor of 0.047 OF were connected in series, and both terminal voltages of the capacitor were measured. In the conventional system, a voltage of 0.34 V was induced while in the system of this invention a voltage of 34.5 V was induced. As a result, the electromotive force on the treated part in this invention is about 100 times greater than the conventional system.
The ratio of electric current consumed was 2.63 A : 0.9 A
i.e. was below 1/30 so that the effectiveness was in the order of 3000 times greater than the conventional systems. The electro-chemical reaction of the treated part of the body was greatly different, and at the same time overheating did not occur and the device of this invention old be used continuously for the therapy of the affected part over long periods.
The capacity of the capacitor, number of windings of the coil, the time ratio of the rise and fall of the electric current flowing in the coil 1, and the switching period in this invention are not limited to the optimum embodiment isle mentioned in the foregoing and may be set in a range described in the following.
Capacity of capacitor : 0.5 - 50 OF
Maximum charge of capacitor : DC 50 - 500 V
Number of windings of coil : 10 - 200 turns Switching frequency `. : - 20 Ho Furthermore, in the foregoing embodiment, the description was mentioned on the case where the rise time and the fall time of the electric current flowing in the coil 1 were set at 1 : 10, but the same effect can be obtained by setting the rise time at 1 msec, and the fall time at 0.1 msec, appositive to the embodiment. However, please note that it is preferable to make the relative time ratio of the rise and the fall of the waveform of electric current set above at above 5 : 1.
It has been known that tile magnetism is effective for therapy of affected parts for such problems as stiffness of the siloulders, pains in the waist, extreme sensitivity to cold and the like. Roy idea behind such therapy is considered to be that when a maglletic field is applied to the human body, the electromotive force is generated in the human body, and electro-chemical changes are caused to occur, by the electromotive force, in the human body weakly consists of chemical substances which generate the ions and increase the ions in the blood which change the function of the autonomic nerve system and facilitate the smooth circulation of the blood. The foregoing -facts are substalltiated by over 20 years of study by Dr. Couch Nakagawa of Issues Hospital of Japan.
BRIEF DESCRIPTION OF THE DRAWINGS:
Figures i and i are waveform diagram for illustration of conventional magnetic therapeutical device output.
Err 2 is an illustration showing an example of the use of the electromagnetic therapeutical device of this invention.
Figure 3 is a circuit diagram of the pulse generator for producing the pulse like electromagnetic field in the electromagnetic therapeutical device of this invention.
Err is a waveform diagram for illustration of the electromagnetic therapeutical device of this invention.
3'î'783 BACKGROUND OF TIRE INVENTION:
In order to generate the necessary electromotive force by means of a magnetic field, it is necessary to vary the magnetic field working on the human body being treated or to move the body within the stationary magnetic field.
Heretofore, with magnetic therapeutical device of this kind, devices involving fixing permanent magnets fabricated from metal granules to the affected part of the body by adhesive material, and a device for generating a fluctuating magnetic field by means of an electric current with a power source frequency of 50 - 60 Isles for commercial use passed through a coil wound on an iron core have been proposed and are in use.
However, since the former device uses a permanent magnet, there is entirely no fluctuation of the magnetic field in relationship to the affected part of the body being treated body, and accordingly, when the blood flows through the blood vessel in the fixed magnetic field, the electromotive force is generated in tile inner wall of the blood vessels, but the generated electromotive force is insignificant. For this reason, the therapeutical effect is low and there is no immediate 123'7'783 effect.
On the other hand, in the latter magnetic therapeutical device utilizing a power source of 100 V at 50/60 Ho, since the electric current flowing in the coil has a sine wave configuration that changes by a function of time as shown in Fig. i, the magnetic field generated from the coil takes a similar waveform to that of the electric current. Accordingly, when the sine wave configuration electric current is made to flow in the coil whereby the resulting line of magnetic force passes through the part of the body being treated, electromotive force of the sine wave whose phase is different by 90 as shown in Fig. i is generated by electromagnetic induction, but the voltage waveform is symmetric vertically so that even if the ions are generated by electro-chemical action, the resulting cations and anions are neutralized each other and thus electro-chemical reaction helpful for improving the therapeutical effect on the human body cannot be anticipated.
Also, although the latter magnetic therapeutical device has been approved as a therapeutical device by Japan's Ministry of Health and Welfare, the specification is such that the surface magnetic flux density is 800 gauss + 50~ (B Max), rated application time is 30 minutes, rated capacity is 260/210 VA, and rated power source is 100 V 50/60 Ho. As will be obvious from the foregoing specification, the time of continuous use of the therapeutical device is 30 minutes. When used longer than the specified time, overheating condition which ~3'7783 brings about a danger of causing burns to the body becomes a problem. The reason for this is that the electric current flowing in the coil is always a relatively strong current of 2.67 amperes.
Also, heretofore, the therapy of applying electromagnetic fields of ultra-shortwave type to the human body is well known.
Since these ultra-shortwave therapeutical devices have a very high frequency as compared with the frequency of commercial power source, a strong electromotive force can be generated and applied to the affected part. However, the body is comprised of biochemical substances. Thus, even if ions are generated in the human body by the electro-chemical action when the frequency is excessively high, the waveform of the electromotive force generated is substantially the same with the one shown in Fig. i, so that both the cations and anions produced by the electromotive force are immediately neutralized, and only thermotherapeutical effects can be anticipated.
In order to generate therapeutic electro-chemical reaction in the human body effectively, the electromotive force to be induced in the affected part of the body being heated should be a low frequency (below 20 Ho) with a DC pulse.
OBJECT OF THE INVENTION:
This invention has solved the conventional prior art problems described above. The primary object of this invention is to provide a magnetic therapeutical device providing both ~'7'7~
significant and rapid therapeutical effect.
Another object of this invention is to provide electromagnetic therapeutical device free of overheating even if used for long hours and consuming relatively low electric power.
SUMMARY OF THE INVENTION:
According to the present invention, therefore, there is provided an electromagnetic therapeutic device comprising:
a transformer having primary and secondary windings, the primary winding being connectable to a conventional source of AC
power; a voltage doubler rectification system connected to the secondary winding of the transformer; a capacitor connected to an output of the rectification circuit; a coil for generating an electromagnetic field; switching means having a frequency of 4 to I Ho connected in series with the coil, the series coupled switching means and coil being directly coupled in parallel with said capacitor the switching means causing the discharge of an electric chary from the capacitor directly to the coil when in its "on" condition; and oscillator means for venerating a signal to activate the switching means.
-`" lZ3`~ 3 DESCRIPTION OF PREFERRED EMBODIMENTS:
The preferred embodiments of this invention Jill be described by referring to the dra~incJs It Fig 2, tile ring-like coil 1 of the electromagnetic therapeutical device embodied in this invention as slipped over the knee portion 2 of the leg, and the pulsing electric current (refer to jig. I) from the pulse generator 3 was supplied to the coil 1 In this case, when the pulsing electron magnetic field of about 8 Isles assay applied to the knee portion, the blood circulation of the knee portion 2 was quickly enhanced such that even for a brief period of this patients normally unbendable knee the knee could be easily bent For the stiffness of the shoulders, tile coil 1 was applied to tile shoulders, tile nape, and also, in order to relieve a pain in the waist, it was applied to tile waist For stomach ache or diarrhea, the coil 1 was applied to the surface of the stomach ennui it alas applied to a part where a pain was felt and trouble with blood circulation occurred, there was a marked therapeutical effect. jig 3 Sluice the actual circuit diagram of the pulse generator 3 that is composed of the power source transformer 11 connected Jo tile commercial power souse 10 of 100 V, tile voltac3e doubler circuit 12 connected to the secondary side of the transformer 11, tile capacitor 13 for charging the double voltage, and relaxation oscillation circuit 15 for triggering ~237783 the thruster 14 connected in series to the coil 1.
- A plurality of taps To - To for handling the output voltage of 25 to 100 V are provided on the secondary winding ha of the power source transformer 11, and the output voltage adjusted to 25 to 100 V is produced and flows through the output terminals tic and lid by the switching action of the slid able element fib from the tap To to the tap To.
Also, the voltage doubler circuit 12 is composed of capacitor aye and diodes 12b and 12c for half-wave rectification, and the double voltage of 50 to 280 V is generated according to the output voltage of the transformer 11 from the voltage doubler circuit 12, and this output voltage charges capacitor 13. Also, relaxation oscillation circuit 15 is provided with variable resistor aye and capacitor 15b connected in series with variable resistor aye, and this series circuit is connected to a half wave rectification circuit 16 consisting of diode aye and capacitor 16b connected to both terminals of secondary winding ha of the power source transformer 11. The gate cathode of thruster 14 is connected to both terminals of the capacitor 15b by means of the trigger diode 15c. The frequency of relaxation oscillation circuit 15 is adjusted to 4 to 20 Ho by varying resistance of variable resistor aye.
The operation of the embodiment of this invention having the foregoing construction will be described in the following.
When the power source switch SW is put in "on" position, the voltage, according to the position of the slid able element 123'7~83 fib on the taps To - To, flows at the output terminals tic and lid of the transformer 11. The voltage is converted to the double voltage with the half-wave rectified by capacitor aye and diodes 12b and 12c, and then is charged in the capacitor 13.
The output voltage of rectification circuit 16 charges the capacitor 15b through the variable resistor aye, and charges capacitor 15b. When this charge exceeds the trigger voltage of the trigger diode 15c, the trigger diode 15c is activated, and the trigger pulse is applied to the gate of the thruster 14. When the trigger pulse is applied, the thruster 14 is activated, and the electric charge accumulated in the capacitor 13 is discharged through the coil 1, and the coil 1 generates the pulsing electromagnetic field. When the number i of windings of coil 1 are about 40 turns with its diameter of about 17 cm, a strong electric current reaching 25 A flows at the peak. The time constant OR = T of the variable resistor aye and the capacitor 15b can determine the frequency of the resulting pulses, and the frequency generated can be changed by the adjustment of the variable resistor aye.
Fig. I shows the waveform of the electric current flowing in the coil 1, and the resulting change of the magnetic field of the coil 1 against the affected part of the body being treated becomes basically similar to Fig. I. Also, Fig.
I shows the waveform of the electromotive force generated in the effected part by the working of the pulsing magnetic ~23'7~33 field on the affected part as shown in Fig. I, and as it will be obvious from the foregoing, the waveform of the electron motive force becomes asymmetric vertically, centering around the reference line I, and moreover the difference of the upper level above the reference line is greater than the lower level from the reference line by more than ten times, and also, the areas of both of the upper level and the lower level are equal.
Accordingly, in case the secondary side on which the electromagnetic field of the coil works is like linear load such as copper wire, alternating positive and negative potential of the electromotive force is subject to cancel each other, but, the affected part of the body being treated at the secondary side on which the magnetic field of the coil 1 works is not a linear load with pure resistance but rather is a non-linear load which has a threshold value. For this reason, and when the voltage above V TO as shown in Fig. I, namely, when voltage above the threshold value of the affected part in contact with the device (several ten - several hundred my per cell) is applied, the electric current will flow. As a result, voltage shown in Fig. I is generated in the affected part, and the waveform of the upper part only exceeds the threshold value V TO of the affected part being treated so that the DC pulse electric current flows to the affected part as shown in Fig. I.
As described in the foregoing, a DC pulse electric ~23~7~33 current car be generated in the part of the body being treated,`
which causes the electro-chemical reactions in the affected part thereby demonstrating high significant therapeutic effects in the affected part of the body, especially in cases where imperfect circulation, etc. are involved.
The most preferable embodiment of this invention will be described in the following.
The number of winding of the coil 1 was set at 40 turns (diameter 17 cm), and the waveform was selected so that the rise time of the electric current flowing in the coil 1 was set at 0.1 msec, and the fall time was set at 1 msec, and the time ratio of the rise and the fall was 1 : lo (refer to Fig. I), and the period of the triangular electric current flowing in coil 1 was set at 8 I by relaxation oscillation circuit 15, and the charge voltage of the capacitor 13 was set at 280 V.
A coil 1 operated in the foregoing condition was applied to the knee of a patient suffering from particular rheumatism of the knee as shown in Fig. 1, and therapy was carried out for several periods of ten minutes whereby upon the previously unbendable knee became bendable. Such cases occurred in large numbers. Examples of the effects of the therapy described above hove been substantiated by reports from patients which utilized the electromagnetic therapeutical device of this invention. Also, the reasons for the foregoing therapeutical effect are that the electromotive force generated in treated !
~23`~
part of the body is far larger than that of the conventional therapy systems and that the pulse is a DC pulse.
The result of measurements of the electromotive force generated in the body by this invention and those for conventional systems in which the commercial frequency of 50 to 60 Ho is applied to the coil to generate the fluctuating magnetic field will be described in the following.
Several 9-turn coils were prepared. A diode and a capacitor of 0.047 OF were connected in series, and both terminal voltages of the capacitor were measured. In the conventional system, a voltage of 0.34 V was induced while in the system of this invention a voltage of 34.5 V was induced. As a result, the electromotive force on the treated part in this invention is about 100 times greater than the conventional system.
The ratio of electric current consumed was 2.63 A : 0.9 A
i.e. was below 1/30 so that the effectiveness was in the order of 3000 times greater than the conventional systems. The electro-chemical reaction of the treated part of the body was greatly different, and at the same time overheating did not occur and the device of this invention old be used continuously for the therapy of the affected part over long periods.
The capacity of the capacitor, number of windings of the coil, the time ratio of the rise and fall of the electric current flowing in the coil 1, and the switching period in this invention are not limited to the optimum embodiment isle mentioned in the foregoing and may be set in a range described in the following.
Capacity of capacitor : 0.5 - 50 OF
Maximum charge of capacitor : DC 50 - 500 V
Number of windings of coil : 10 - 200 turns Switching frequency `. : - 20 Ho Furthermore, in the foregoing embodiment, the description was mentioned on the case where the rise time and the fall time of the electric current flowing in the coil 1 were set at 1 : 10, but the same effect can be obtained by setting the rise time at 1 msec, and the fall time at 0.1 msec, appositive to the embodiment. However, please note that it is preferable to make the relative time ratio of the rise and the fall of the waveform of electric current set above at above 5 : 1.
Claims (2)
1. An electromagnetic therapeutic device comprising:
a transformer having primary and secondary windings, the primary winding being connectable to a conventional source of AC
power; a voltage doubler rectification system connected to the secondary winding of the transformer; a capacitor connected to an output of the rectification circuit; a coil for generating an electromagnetic field; switching means having a frequency of 4 to Hz connected in series with the coil, the series coupled switching means and coil being directly coupled in parallel with said capacitor, the switching means causing the discharge of an electric charge from the capacitor directly to the coil when the switching means is in an "on" condition; and oscillator means for generating a signal to activate the switching means.
a transformer having primary and secondary windings, the primary winding being connectable to a conventional source of AC
power; a voltage doubler rectification system connected to the secondary winding of the transformer; a capacitor connected to an output of the rectification circuit; a coil for generating an electromagnetic field; switching means having a frequency of 4 to Hz connected in series with the coil, the series coupled switching means and coil being directly coupled in parallel with said capacitor, the switching means causing the discharge of an electric charge from the capacitor directly to the coil when the switching means is in an "on" condition; and oscillator means for generating a signal to activate the switching means.
2. An electromagnetic therapeutic device as claimed in claim 1 including means for generating an electric current wave form flowing into the coil for generating a fluctuated electromagnetic field waveform whose relative time ratio of rise to fall is more than 1 : 5.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57164219A JPS5955260A (en) | 1982-09-21 | 1982-09-21 | Electromagnetic treating device |
| JP57-164219 | 1982-09-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1237783A true CA1237783A (en) | 1988-06-07 |
Family
ID=15788928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000436562A Expired CA1237783A (en) | 1982-09-21 | 1983-09-13 | Electromagnetic therapeutical device |
Country Status (9)
| Country | Link |
|---|---|
| JP (1) | JPS5955260A (en) |
| KR (1) | KR860001942B1 (en) |
| AU (1) | AU575779B2 (en) |
| BR (1) | BR8303948A (en) |
| CA (1) | CA1237783A (en) |
| DE (1) | DE3327920A1 (en) |
| FR (1) | FR2533131B1 (en) |
| GB (1) | GB2143131B (en) |
| IN (1) | IN158110B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7280861B2 (en) | 2000-06-08 | 2007-10-09 | Fralex Therapeutics, Inc. | Diagnosis and classification of disease and disability using low frequency magnetic field designed pulses (Cnps) |
Families Citing this family (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1159024B (en) * | 1983-06-02 | 1987-02-25 | Ruggero Cadossi | METHOD AND DEVICE FOR THE TREATMENT OF FABRICS AND LIVING CELLS THROUGH ELECTROMAGNETIC FIELDS BUTTONS |
| US4674482A (en) * | 1984-09-12 | 1987-06-23 | Irt, Inc. | Pulse electro-magnetic field therapy device with auto bias circuit |
| GB8507213D0 (en) * | 1985-03-20 | 1985-04-24 | Kiernan K | Machine for medical use |
| DE3650729T2 (en) * | 1985-12-04 | 2000-05-04 | Hisamitsu Pharmaceutical Co., Inc. | COMPACT LOW-FREQUENCY MEDICINE ARRANGEMENT |
| US4672951A (en) * | 1985-12-30 | 1987-06-16 | Bio-Electric, Inc. | Method and apparatus for treatment of biological tissue |
| US4757804A (en) * | 1986-08-25 | 1988-07-19 | Lti Biomedical, Inc. | Device for electromagnetic treatment of living tissue |
| CA1334541C (en) * | 1988-05-04 | 1995-02-21 | Michael James Williams Brennan | Treatment of sleep disorders and alleviating disruption of circadian rhythms |
| DE3919540A1 (en) * | 1988-06-22 | 1989-12-28 | Dragan Susic | MAGNETIC MASSAGE THERAPY DEVICE |
| US4998913A (en) * | 1989-04-14 | 1991-03-12 | Atwood Jr John A | Electronic stimulating device |
| US4994016A (en) * | 1989-04-14 | 1991-02-19 | John Atwood | Electronic stimulating device |
| DE3937793A1 (en) * | 1989-11-14 | 1991-05-16 | Datron Electronic Gmbh | Inductive stimulation appts. for diagnostics or therapy - switches precharged capacitor to stimulation coil for rapid discharge via thyristor |
| GB2270000B (en) * | 1992-08-26 | 1996-04-24 | Robert John Grace | Magnetic field induction multi-pulse therapy |
| AU661789B2 (en) * | 1992-08-26 | 1995-08-03 | Larkace Pty Ltd | Magnetic field induction multi-pulse therapy |
| US5338286A (en) * | 1992-12-08 | 1994-08-16 | Electro-Biology, Inc. | Electromagnetic bioresponse by selective spectral suppression in pulsed field stimulation |
| GB9504216D0 (en) * | 1995-03-02 | 1995-04-19 | Magstim Co Ltd | Magnetic stimulator for neuro-muscular tissue |
| GB2304287A (en) * | 1995-08-18 | 1997-03-19 | Malcolm Cummings | Magnetotherapy apparatus |
| CA2257266C (en) * | 1996-06-06 | 2013-06-25 | Lawson Research Institute | Electrotherapy device using low frequency magnetic pulses |
| KR100320366B1 (en) * | 1998-07-28 | 2002-01-16 | 나카가와 도오루 | Magnet type medical instrument |
| PT1294437E (en) | 2000-06-09 | 2007-02-28 | Fralex Therapeutics Inc | Device for magnetic and electric field shielding |
| GB0214588D0 (en) * | 2002-06-25 | 2002-08-07 | Quantum Techniks Ltd | Therapeutic device |
| RU2528608C2 (en) * | 2012-12-25 | 2014-09-20 | Игорь Анатольевич Ефремов | Method to demagnetise volume of magnetised body |
| DE102019000109A1 (en) * | 2019-01-09 | 2020-07-09 | Kastriot Merlaku | Device against muscle spasm |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1073623A (en) * | 1963-06-10 | 1967-06-28 | Enea Elmi | Apparatus for the generation of a controllable variable magnetic field, for biomedical applications |
| BE794566A (en) * | 1972-01-28 | 1973-07-26 | Esb Inc | BIOELECTROCHEMICAL REGENERATOR AND STIMULATOR AND IN VIVO APPLICATION METHODS OF ELECTRIC ENERGY TO CELLS AND TISSUES. |
| DE2632501A1 (en) * | 1976-07-20 | 1978-01-26 | Ludwig Wolfgang Dr Rer Nat | Medical magnet impulse device - is for stimulating nerves in place of acupuncture needles |
| US4105017A (en) * | 1976-11-17 | 1978-08-08 | Electro-Biology, Inc. | Modification of the growth repair and maintenance behavior of living tissue and cells by a specific and selective change in electrical environment |
| GB1596513A (en) * | 1976-11-17 | 1981-08-26 | Electro Biology Inc | Modification of the growth repair and maintenance behaviour of living tissues and cells by a specific and selective change in electrical environment |
| WO1980001045A1 (en) * | 1978-11-16 | 1980-05-29 | R Bentall | Inductors for high frequency electromagnetic therapy apparatus |
| EP0039206B1 (en) * | 1980-04-23 | 1984-10-10 | Inoue-Japax Research Incorporated | Magnetic treatment device |
| CA1150361A (en) * | 1980-09-24 | 1983-07-19 | Roland A. Drolet | Electro-magnetic therapeutic system and method |
| GB2106394B (en) * | 1981-09-24 | 1986-03-19 | Richard Hugh Cameron Bentall | Device for applying a high frequency electromagnetic field to living tissue to promote healing thereof |
-
1982
- 1982-09-21 JP JP57164219A patent/JPS5955260A/en active Granted
-
1983
- 1983-06-30 KR KR1019830002996A patent/KR860001942B1/en not_active IP Right Cessation
- 1983-07-08 GB GB08318530A patent/GB2143131B/en not_active Expired
- 1983-07-14 AU AU16838/83A patent/AU575779B2/en not_active Ceased
- 1983-07-20 IN IN906/CAL/83A patent/IN158110B/en unknown
- 1983-07-25 BR BR8303948A patent/BR8303948A/en not_active IP Right Cessation
- 1983-07-26 FR FR838312367A patent/FR2533131B1/en not_active Expired
- 1983-07-29 DE DE19833327920 patent/DE3327920A1/en not_active Ceased
- 1983-09-13 CA CA000436562A patent/CA1237783A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7280861B2 (en) | 2000-06-08 | 2007-10-09 | Fralex Therapeutics, Inc. | Diagnosis and classification of disease and disability using low frequency magnetic field designed pulses (Cnps) |
Also Published As
| Publication number | Publication date |
|---|---|
| IN158110B (en) | 1986-09-06 |
| AU1683883A (en) | 1984-03-29 |
| AU575779B2 (en) | 1988-08-11 |
| BR8303948A (en) | 1984-06-12 |
| GB8318530D0 (en) | 1983-08-10 |
| GB2143131A (en) | 1985-02-06 |
| GB2143131B (en) | 1987-03-04 |
| KR850000986A (en) | 1985-03-14 |
| DE3327920A1 (en) | 1984-10-04 |
| JPS5955260A (en) | 1984-03-30 |
| KR860001942B1 (en) | 1986-11-01 |
| FR2533131B1 (en) | 1989-05-26 |
| FR2533131A1 (en) | 1984-03-23 |
| JPS621736B2 (en) | 1987-01-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |