FR2533131A1 - ELECTROMAGNETIC THERAPEUTIC DEVICE - Google Patents

Abstract

THE ELECTROMAGNETIC THERAPEUTIC DEVICE OF THE PRESENT INVENTION IS DESIGNED TO PERFORM THERAPY ON THE AFFECTED PART OF THE HUMAN BODY BY APPLICATION OF A FLUCTUING MAGNETIC FIELD PRODUCED BY A COIL 1, IN WHICH THE VOLTAGE APPLIED TO A CONDENSER 13 IS PROVIDED BY A DISCHARGE. THE CONDUCTIVITY OF A SWITCHING ELEMENT 14 AND A PULSE ELECTRIC CURRENT WAVEFORM WHOSE RELATIVE RISE AND LOWER TIME RELATIONSHIP IS GREATER THAN 51 CROSSES THE COIL TO PRODUCE AN ELECTROMAGNETIC FIELD WHOSE WAVE FORM IS SIMILAR TO THAT OF THE ELECTRIC CURRENT IN THE COIL.

Description

1, s- The present invention relates to a therapeutic device

  electromagnetic for the execution of a

  therapy on the affected parts of the human body by ap-

  application of a fluctuating electromagnetic field produced by a coil. It is known in the art that magnetism is effective in therapy operations to cure affected parts of the body such as stiffness in the shoulders, chest pain, extreme sensitivity to cold and the like The idea underlying such therapy is that when a magnetic field is applied to the human body, an electromotive force is produced in the body and electrochemical changes are caused to occur as a result of this electromotive force in the body, which

  is made up of ionic producing substances, with increased

  tion of these ions in the blood which has the effect of m Ddify the function-

  the autonomic nervous system and to facilitate circulation

  regular blood, The above facts are supported by more than 20 years of R studies, Kyoichi Nakagawa from

Isuzu Hospital of Japan.

  In order to produce the electromotive force ne-

  cease by means of a magnetic field, it is necessary to vary the magnetic field acting on the human body during treatment or to move the body to

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  inside the fixed magnetic field.

  In the prior art, with regard to magnetic therapeutic devices of this nature, systems have been proposed and used involving the fixing with an adhesive of permanent magnets made from metallic granules.

  on the affected part of the body, and a device

  combining a fluctuating magnetic field by means of a current

  electric having the network frequency of 50 to 60 Hz tra-

  pouring a coil wound on an iron core.

  However, as the first device uses a permanent magnet, there are no fluctuations in the magnetic field in relation to the affected part of the body being treated and, therefore, when blood flows through the blood vessels located in the fixed magnetic field, the electromotive force is produced in the inner wall of the vessels, but this force is

  insignificant It is for this very reason that the therapeutic effect

  tick is weak and there is no immediate effect.

  On the other hand, in the second therapeutic device

  that magnetic which uses a source of 100 volts at a frequency of 50/60 Hz, given that the electric current E circulating in the coil has the form of a sine wave which varies according to time as represented l (a), the

  magnetic field produced by the coil in the form of an on-

  similar to that of the electric current Consequently, when the electric sinusoidal current is brought to circul E in the coil, with as a consequence that the magnetic lines of faith cross the part of the body being treated electromotive force of the sinusoidal wave whose phase is offset by 900 as shown in Figure 1 (b), is produced by electromagnetic induction, but the

  voltage waveform is symmetrical about the ver-

  ticale so that even if the ions are produced by ac-

  electrochemical tion, the resulting cations and anions neutralize each other and one cannot wait 1 a

  electrochemical reaction to improve the tea effect

on the human body.

  In addition, although the second therapeutic device

3, '

  that magnetic has been approved as a therapeutic device

  tick by the Japanese Ministry of Health and Welfare,

  the specification is such that the density of the magnetic flux

  that at the surface is 800 gauss 50% (B max), the nominal duration of application is 30 minutes, the nominal power of 260/210 VA, and the nominal characteristics of the energy source of 100 volts and 50/60 Hz As will appear from the previous specification, the time of continuous use of the therapeutic device is

  30 minutes When used longer than

  specified temperature, overheating occurs which may

  cause burns to the body, which poses a problem

  me important The reason is that the electric current

  flowing through the coil is always a relative current-

  important, having an intensity of 2.67 amps.

  In addition, application therapy to the body

  human electromagnetic fields of the ultra-wave type

  short is so far known as these devices

  ultra-short wave therapeutics have a frequent

  this -very high compared to the frequency of sources

  energy sales, an important electromotive force

  can be produced and applied to the affected part Ce-

  during F the body is made up of biochemical substances.

  So even if ions are produced in the human body

  by electrochemical action when the frequency is excess-

  sively high, the waveform of the electromotive force

  this product is substantially the same as that shown in FIG. 1 (b), so that both the cations and the

  anions produced by the electromotive force are immediate-

  only neutralized and only thermotherapeutic effects

can be expected.

  In order to effectively produce the

  therapeutic electrochemical reaction in the human body

  mainf i A f Qrce electromotive to be induced in the affected part of the body during heating must have

  a low frequency (below 20 Hz) with a pulse

DC current.

  The present invention has solved the pre-

4.

  prior art The main object of the present

  The invention is a magnetic therapeutic device provided

  establishing a therapeutic effect that is both significant and rapid

  of. Another object of the present invention is a

  electromagnetic therapeutic device, free of over-

  heats up even when used for a long time, and consuming a

  relatively low electrical energy.

  to achieve the above objects, the arrangement

  electromagnetic therapy which constitutes the present

  The invention is constructed in such a way that the form

  wave of the electric current flowing in the coil

  a fluctuating electromagnetic field is transformed

  in pulse wave form whose ratio between durations

  latives of ascent and descent is greater than 5/1 and the electromotive force produced in the affected part of the

  body being treated has a momentum in

  continuous rant as the fluctuating magnetic field produces

by the coil passes through the body.

  The present invention will be well understood when

  of the following description made in conjunction with the

  sins attached in which: Figures l (a) and l (b) are diagrams of

  waveforms to illustrate the output of a dispo-

  classical magnetotherapy therapy; Figure 2 is an illustration showing a

  example of the use of the electro-therapeutic device

  genetics of the present invention; Figure 3 is a generator circuit diagram

  pulses to produce the electromagnetic field

  that similar to pulses in the therapeutic device

  that electromagnetic of the present invention; and

  Figure 4 is a diagranmre of waveforms per-

  illustrating the electromagnetic therapeutic device

  tick of the present invention, Preferred embodiments of the present

  invention will now be described in connection with the

  sins,, In Figure 2, a ring-shaped coil 1 of the electromagnetic therapeutic device of the present invention is slid over the knee 2 of a leg, and the pulsed electric current (see Figure 4 (a)) produced by a pulse generator 3 is supplied to the coil 1 In this case, when the pulsed electromagnetic field having a

  frequency of about 8 Hz is applied to the knee, the circula-

  tion of the blood in the knee is rapidly improved upon

  that even during the short time of application

  time, the patient can bend his knee, which he cannot

  would normally do For stiffness of the shoulders, the bo-

  bine 1 is applied to the shoulders, the nape of the neck, and also,

  to relieve chest pain on it.

  For stomach aches or diarrhea, apply the coil 1 to the surface of the stomach. When applied to a part where pain and blood circulation problems have been detected, this has an effect. marked therapy FIG. 3 represents a circuit diagram of the pulse generator 3, which consists of a power transformer 11, connected to a voltage source of 100 volts, a voltage doubler circuit 12 connected to the transformer secondary 11, a capacitor

  13 to charge the voltage doubling circuit, and a circuit

  cooked 15 relaxation swings to trigger a thy-

  ristor 14 connected in series with the coil 1, A plurality of sockets T 1 T 6 allowing the output voltage to be varied between 25 and 100 volts

  are provided on the secondary winding 1 la of the transformer

  mateur 11; the voltage is adjusted between 25 and 100 volts and

  the voltage between terminals llc and lld is obtained

  naked by the switching action of a slider llb between

the T 1 socket and the TE socket.

  In addition, the voltage doubler circuit 12 consists of a capacitor 12 a and diodes 12 b and 12 c for rectification with an alternance, and a double voltage between 50 and 280 volts is produced as a function of

  the output voltage of the transformer 11 from the circuit

  cooked 12? this output voltage charges the capacitor 13.

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  In addition, the relaxation oscillation circuit 15 includes

  carries a potentiometer 15 a and a capacitor 15 b in se-

  rie with the potentiometer, and this series circuit is connected to an alternating rectifier circuit 16 consisting of a didde 16 a and a capacitor-16 b connected to the terminals of

  the secondary winding lla of the transformer 11 The grill-

  the thyristor 14 is connected to the terminals of the capacitor b by a triggering diode 15 c The frequency of the circuit 15 is adjusted to a value between 4 and

  20 Hz by varying the resistance of potentiometer 15 a.

  We will now describe the operation of this mo-

  of the present invention.

  When the power switch SW is set

  in the "closed" position, a voltage, depending on the position

  tion of the cursor llb on the Tl T 6 sockets, is present at

  output terminals llc and lld of transformer 11 This voltage

  is transformed into double voltage with the alternating rectifier by the capacitor 12 a and the diodes 12 b

  and 12 c, then applied to capacitor 13.

  The output voltage of the rectifier circuit 16

  charge the capacitor 15 b via the potentio-

  meter 15 af and the capacitor 15 b When the load exceeds

  is the trigger voltage of the diode 15 c, it

  is implemented, and the trigger pulse applies

  at the gate of the thyristor 14 When the pulse de-

  triggering is applied, the thyristor 14 is actuated and the electric charge accumulated in the capacitor 13 discharges in the coil 1, and the coil 1 produces a pulsed electromagnetic field When the number of turns

  of the coil 1 is about 40, its diameter being about

  about 17 cm a large electric current flows, reaching

  gaining 25 A at peak, The time constant CR = T, of the po-

  tenti Qmeter 15 a and capacitor 15 b can determine the

  frequency of the resulting pulses, and the frequency

  pick can be changed by adjusting potentiometer 15 a.

  Figure 4 (a) shows the waveform of the cou-

  rant crossing the coil 1 and the resulting variation

  aunt of the magnetic field of coil 1 applied to the

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7.

  affected part of the body being treated becomes dark

  mentally similar to Figure 4 (a) In addition, the figure

  gure 4 (b) represents the waveform of the electro-

  motor produced in the part affected by the magnetic field

  tick applied to the affected part as shown in Figure 4 (a), and as it appears from the above,

  the waveform of the electromotive force becomes verti-

  asymmetrically, being centered around the reference line t and on the other hand, the difference between the upper level and the reference line is approximately

  times the difference between the lower level and the li-

  reference gene; in addition, the upper level areas

and lower are equal.

  Therefore, 'in the case where the secondary side

  on which works the electromagnetic field of the bo-

  bine is similar to a linear charge such as a copper wire, the alternately positive and negative potential of the electromotive force is subject & cancellation, but the affected part of the body being treated on the secondary side on which the magnetic field of the

  coil 1 is not a linear load having a resistance

  this pure, but on the contrary is a nonlinear load having a threshold value For this reason, 'when the voltage higher than VTH ^ is applied as represented in figure 3 (b), i.e. the voltage at - above value

  of the affected part in contact with the device

  tif (from ten & several hundred mv per cell), one

  electric current flows As a result, the voltage re-

  presented in figure 4 (b) is produced in the affected part

  tée, and the waveform of the upper part only exceeds

  LHV threshold value of the affected part of the

  te that the pulsating direct current flows towards the affected part

  tee as shown in Figure 4 (c),

  According to the preceding description, a current

  pulsed tinu can be produced in the part of the body being treated, which causes electrochemical reactions in this part, which implies therapeutic effects

  important in this section, 'especially in case of

8.

traffic flow -

  We will now describe the preferred mode of realization

  tion of the present invention, The number of turns of the coil 1 is 40 (diameter 17 cm), and the waveform is chosen so that the rise time of the electric current passing through the coil 1 is 0.1 l msec and the fall time of 1 msec, the ratio between rise and fall times being

  (see Figure 4 (b)), and the frequency of

  rant triangular electric crossing the coil 1 is re-

  set at 8 Hz by circuit 15, and the charging voltage of the

capacitor 13 to 280 volts.

  A coil 1 operating under the pre-

  cédentes is applied to the knee of a patient suffering from rheumatoid arthritis as shown in FIG. 2, and

  therapy performed over several 10 minute periods

  As a result, a knee that cannot be bent previously can now be bent. Such cases occur in large numbers. Examples of the effects of therapy previously described have been the subject of patient reports.

  who have used the electromagnetic therapy device

  tick of the present invention In addition, the reasons for

  the previous therapeutic effect is that the electro-

  motor produced in the treated part of the body is far superior to that which can be obtained with systems

  conventional therapy, and that the impulse is an impul-

DC current.

  The result of electromo-

  produced in the body by the device of the present

  the invention and those of conventional systems in which

  the network frequency of 50 to 60 Hz is applied to the coil

  do to produce the fluctuating magnetic field are indi-

  qués below, We prepare several coils of 9 turns We connect in series a diode and a capacitor of 0.047 WF and we measure the voltage across the capacitor In the classic system, a voltage of 0.34 volts is induced while in the system of the present invention it is 9, 34.5 volts I 1 as a result that the electromotive force in the treated part, obtained with the present invention,

  is about 100 times that of the standard system

  sique The ratio between electrical currents consumed is 2.63 amperes / 0.9 amperes, i.e. less than 1/30,

  so the efficiency is about 3000 times greater

  of that in classical systems The electro-

  of the treated part of the body is greatly diff-

  In addition, there is no overheating and the device of the present invention can be used continuously, for the therapy of the affected part, during

long durations.

  Capacitor capacity, number of turns

  of the coil, the ratio between rise and fall times

  cent of the electric current passing through the coil 1, and the switching period of the present invention are not

  not limited to the Qptimum values mentioned in the above

  fails and can be selected from the following range: Capacitor capacity: 0.5 50 PF Maximum capacitor charge: 50,500 volts

in continuous current

  nu Number of turns of the coil: 10,200 Switching frequency: 4 20 Hz In addition, in the previous embodiment,

  we have cited the case where the rise time and the fall time

  cent of the electric current passing through the coil 1 was set to 1/10, but the same effect can be obtained by setting the rise time to 1 msec and the fall time to 0.1 msec, unlike the previous case, Note, however, that it is preferable that the ratio between relative times of

  rise and fall of the waveform of the electric current

that be set to 5/1,

  The present invention is not limited to the examples

  ples of realization which have just been described, it is on the contrary susceptible of variants and modifications

  which will appear to those skilled in the art.

10.

Claims (2)

  l Electromagnetic therapeutic device, characterized in that it comprises: a device incorporating a circuit means for producing an alternating voltage of predetermined level, a capacitor charged with the output voltage of the circuit means and producing a discharge voltage of 500 volts, a coil of 10,200 turns connected to   capacitor terminals by means of a switching element   tion so as to produce an electromagnetic field, and a trip circuit means for switching the switching element at a frequency of 4 20 Hz so as to discharge the electric charge from the capacitor in the coil.   2 -, Device according to claim 1, character-   laughed at by the fact that the waveform of the electric current travels   pouring the coil to produce a fluc-   killing becomes a waveform whose ratio between time   relative rise and fall is greater than 5/1.