RU1821230C - Magnetotherapeutic device - Google Patents

Abstract

Usage: the invention relates to medical equipment and can be used for physiotherapeutic effects, including treatment and targeted training of neuromuscular structures and organs. The purpose of the invention is to reduce the adaptation of stimulated structures and organs to exposure to a magnetic field. The device for magnetotherapy contains impact generators 1, 2 and 3. which c. in turn, they include frequency modulators 4, 8, and 12, switches J. 9 and 13. pseudo-random pulse generators 7, 11, and 15, which specify the generators 6, 10, and 14. The device also includes power amplifiers 16, 17, and 18; 19.20 and 21; control panel 22. Moreover, the control panel is connected to the action generators and power amplifiers. The second input of each power amplifier is connected to the output of the corresponding action generator and its output is to the corresponding action element. Each impact generator consists of interconnected frequency modulator, switch and master oscillator, as well as a pseudo-random pulse generator, the output of which is connected to the switch. In this case, the output of each frequency modulator is connected to the switches of other impact generators. 1 wpp, 7 silt, eat

Description

The invention relates to medical equipment and can be used for physiotherapeutic effects, including treatment and targeted training of neuromuscular structures and organs.

The purpose of the invention is to reduce the adaptation of stimulated structures and organs to exposure to a magnetic field,

In FIG. 1 shows a block diagram of a device; in FIG. 2, 3 and 4 - time diagrams of stresses at the outputs of individual elements of the structural diagram; in FIG. 5 - arrangement of exposure elements; Fig. 6 is a timing chart of a change in vector, magnetic induction in the action elements; in FIG. 7 - changing the module and the direction of the resulting vector of magnetic induction at different points in time ..

The magnetotherapy device comprises impact generators 1, 2 and 3, which in turn include frequency modulators 4.8 and 12; switches 5.9 and 13; pseudo-random pulse generators 7.11 and 15; master oscillators 6.10 and 14. Power amplifiers 16.17 and 18 are also included in the device; impact elements 19, 20 and 21; control panel 22 of Fig. 1). Moreover, the control terminal is connected to the action generators and power amplifiers. The second input of each power amplifier is connected to the output of the corresponding action generator, and its output to the corresponding action element. Each impact generator consists of a frequency modulator, a switch and a master oscillator interconnected, as well as a pseudo-random pulse generator, the output of which is connected to the switch. In this case, the output of each frequency modulator is connected to the switches of other impact generators.

The device operates as follows.

Frequency modulator 4 (Fig. 1) will generate a sawtooth voltage Ui (Fig. 2), the period of which Tm1 is set from the control panel 22 by changing the parameters of the timing of the RC circuit of frequency modulator 4. Frequency modulator 8 generates a sawtooth voltage W (Fig. 2), the PMC2 period of which is also set from the control panel 22 by changing the time parameters of the master RC circuit of the modulator 8;

The frequency modulator 12 generates a triangular voltage Us, the frequency of which is set in the same way from the control panel 22 (Fig. 1).

Frequency modulators 4, 8 and 12 are designed in such a way that, from the control panel 22, each of them can be assigned its own type of law for changing the output voltage Ui or Ua. or Us (Fig. 2).

The output voltages Ui, Ua, and Us (Fig. 2) of the frequency modulators 4, .8 and 12, respectively, are supplied to the corresponding switched inputs of the switches 5,

9 and 13.

The pseudo-random pulse generators 7.11 and 15 contain clock generators in which the voltages Uy, Oy and Uia (Fig. 3) are generated respectively.; ....

The periods of repetition of these voltages Ti, G2 and T3 (periods of repetition of clock pulses) are set from the control panel 22 and are equal to or a multiple of the values from the interval:

g (0.01-1) s.

These clock pulses are used in the formation of pseudorandom sequences of rectangular

5 pulses Us. Un and Ui (FIG. 3) in pseudo-random pulse generators 7, 11 and 15 (FIG. 1), respectively. Weekend voltage. UB, Un, and UH of the indicated generators - are supplied to the corresponding control inputs of switches 5, 9, and 13 (Fig. 1).

Switches 5.9 and 13 at each transition of the corresponding voltages Us, Uii, and Ui4 from a low to a high level and vice versa (at each transition from О to Г and

5, on the contrary) the outputs of the frequency modulators 4, 8 and 12 are connected in series to the inputs of the master oscillators b, 10 and 14 in the selected order. In this example, the connection sequence

0

5

outputs of frequency modulators to the input

the master oscillator 6 is selected in the form: 4, .8, 12, 4, 8, 12, etc .; to the input of the generator 10 is selected in the form: 8, 4. 12.8, 4, 12, etc .; to the input of the generator 14 in the form; 12, 4, 8,12, 4, 8 5 it, d. ,, .... -. . ;. ; ...

The master oscillators 6, 10 and 14 are analog-to-digital voltage-frequency converters.

The output voltage Ua (Fig. 2) of the master oscillator 6, when modulated only by the frequency module, the torm 4 has the form of a meander of increasing frequency FI of a decreasing period Ti), and Fi 1 / Ti of Fig. 2).

Generator output voltage b

when modulated only by frequency modulator 8, it has the form of a meander J of incident frequency-Fa (increasing period tj), moreover, Fz 1 / Ta (Fig. 2). The output voltage of the generator b when modulating it only

frequency modulator 12 has the form of a meander Ue of an increasing-decreasing frequency P3 (a decreasing-increasing period T3), with P3 1 / T3 (Fig. 2).

Adjusting the periods PMh1, Thm2 and Thmz (Fig. 2) of the output voltages of the frequency modulators 4, 8 and 12 from the control panel 22 (Fig. 1) provides a change in the frequency values Fi, F2 and Pz of the output voltages of the driving generators b, 10 and 14 and their change rates dFr / dt, dFa / dt, dP3 / dt within the range of

Fi (20-20000) Hz,

dfi dt

 + (5-200), 103 Hz / s,

where 1 1,2,3 ..

As a result of the serial connection of the frequency modulators 4, 8 and 12 to the inputs of the master oscillators 6,10 and 14, carried out by the switches 5 9 and 13 in this order, the output voltage Ug is generated at the output of the master oscillator 6 (Fig. 3), and at the output of the master generator 10, the voltage Ui2 is generated (Fig. 3), and at the output of the master generator 14, the voltage Uis is generated (Fig. 3) /:

Each of these voltages Ug, Ui2, and U15 is a discrete composite frequency modulated signal. ., ... ...-. .-; .-.

In addition, changing from the control panel 22 repetition periods of Ti, Zg and T3 clock pulses of pseudo-random pulse generators 7, 1.1 and 15, the type and parameters of the laws of linear frequency modulation for frequency modulators 4, 8 and 12 provides for each output generators 6, 10 and T4 values of the initial frequency fo and the rate of change of the frequency df / dt of the signal, lying in the range: 0 f0- (20-20000 Hz,:

. (5-200) .10y Hz / s, -; :

When the durations of the samples / 4tif, At2j and Dgzk (Fig. 3) of the output signals of the master oscillators b, 10 and 14, respectively, will have values equal to or multiple of the interval:. . Dg (0.0 S) s. :; :

The voltages Ug, Ui2 and U-J5 after amplification in the power amplifiers 16, 17 and 18 (Fig. 1), respectively, are affected by 5 exposure points. So, from the output of the power amplifier 16, the signal is supplied to the action element 19. From the output of the power amplifier 17, to the action element 20, and from the output of the power amplifier 18 to the element

5

5

0

/

0 5:

-

fifty

5

.

effects 21. The adjustment of the output voltage level of the power amplifiers 16, 17 and 18 is carried out from the control panel 22 (figL).

In each element of influence 19, 20 and 21 upon receipt of signals c. the outputs of the power amplifiers 16, 17 and 18, respectively, create a magnetic field characterized by a vector of magnetic in-. Products B: Bi - for the action element, and 19. §2 - for the action element 20, Bz - -v- for the action element 21.

The action elements 19,20 and 21 are electromagnets. They are located along the perimeter of the cylindrical surface and are shifted relative to each other by 120 ° (Fig. 5). Positions (1-1), (2-2), (the location of the action elements 19, 20 and 21 respectively is indicated. Structurally, this cavity together with the action elements can be a stator of a serial three-phase motor.

Figure 6 shows the timing diagrams Bi, B2, Cb of the magnetic induction vector for the action elements 19, 20 and 21, respectively, since the magnetic induction created by each action element changes according to the current change in it, the nature of Bi, 02 (Fig. 6) in time coincides with the nature of the voltage variation; Ug, Urz and Uis, respectively, but 90 ° out of phase.

In FIG. Figures 7a, b, c, d, e, e show the positions of the resulting magnetic induction vector with equally spaced points in time indicated in Fig. 6 for the values of B d, B2 and §§ with points 1, 0, 2, 3, 4 and 5, respectively. ..

The diagrams shown in Fig. 7 indicate the presence of amplitude modulation of the resulting magnetic vector. induction VR. The speed and direction of rotation of this vector are determined by the phase relationships of the currents flowing in the elements of action.

Procedure for conducting magnetotherapy; It implies that the system of electromagnets covers the painful areas of the human body (limbs, trunk, head) and the impact on the selected area for (5-10) minutes by a magnetic field created using the described device. In this case, the maximum Sha value of magnetic induction does not exceed 0.01 T.

FORMULIS

Claims (2)

1. The device dp mzgnitoterapii containing geierator effects and elements of the impact in the form of electromagnets, with the exception that in order to reduction of adaptation of stimulated structures and organs to the action of the magnetic field, it also includes a number of action generators, power amplifiers and a control panel connected to the action generators and amplifiers, while the second input of each power amplifier is connected to the output of the corresponding action generator, and its output is to the electromagnet. u 2. The device according to claim 1, with the proviso that each action generator consists of interconnected frequency modulator, switch and master oscillator, as well as a pseudo-random pulse generator, the output of which is connected to a switch, wherein the output of each frequency modulator is connected to the switches of other impact generators. TWI AND Vffo - / and I / and 1Ш1ЛШ1Г1 Ги P Atai-t flftFd lUinTLTU flft feftf  Sfe //: 3 and t ti l tffl1 - t 4 3 ffiM  ҐLAA JlJTJLrUl-QJLF -r MҐTJlMfi-TLn-Af Jl / l / bTUlfWlJEAJ  meg oczizei - Fi & 6 /. g