SU1572651A1 - Device for therapy - Google Patents

Abstract

The invention relates to devices for the physiotherapeutic action of an INCH-electromagnetic field. The purpose of the invention is to reduce the duration of the procedure. The device contains a pulse generator 1, a counter decoder 2, an amplitude modulator 3, a driver 4, an emitter 5, capacitor plates 6, an indicator 7, a driver of time intervals 8. The rectangular pulses from the generator 1 output go to the counter-decoder 2, on the first the output of which generates pulses of the required frequency, which are formed in bursts using a time interval generator 8, with the amplitude U of each batch changing in modulator 3 according to the law U = U _о е -1 / Τ _G , where Τ _{G is the} specified value

U _o - the initial amplitude is 10 - 120V. In the former 4, the polarity as well as the duration of the front and edge of the pulses is then transmitted to the common radiator and the capacitor plates intended for local action. 3 il.

Description

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The invention relates to medical technology, namely to devices for physiotherapeutic action of a pulsed low-frequency electromagnetic field.

The purpose of the invention is to reduce the duration of the procedure.

FIG. 1 shows a block diagram of a device for low frequency therapy; in fig. 2 - shaper output waveform; in fig. 3 - signals at the output of the device nodes.

The device contains a pulse generator 1, which is sequentially connected to a counter-decoder 2, a modulator 3 pulse amplitudes, a shaper 4 pulses, the outputs of which are connected to the emitter 5, capacitor plastimm 6 and the indicator 7, and the shaper 8 time intervals, whose input is connected to the second output of the counter-decoder 2, and the output with the second input of the modulator 3 pulse amplitudes

The device operates as follows. Pulse generator 1 generates square-shaped pulses (Fig. 3a), which arrive at the decoder counter 2, where pulses of the required repetition frequency are formed (Fig. 36), using the counter decoder 2 and the imager 8 temporary intervals of bursts of pulses are formed with the same frequency of 4 min each. The pulses from the counter-decoder 2 and the driver of 8 time intervals are fed to the input of the module - Jurassic 3 amplitudes, where modulating voltages are produced (Fig. Sv), shifted in time, to form decreasing in amplitude according to the law V --- Uue, where t $ -

0

five

0

five

given value, UQ - initial amplitude, is 10-120 V. Modulated in amplitude packs of pulses (Fig. 3g) arrive at the shaper of 4 pulses, where the polarity of the signals changes and pulses with a front duration of not more than 0.5 µs and a cut are formed with a duration of at least 10 ms with a maximum pulse amplitude of 10-120 V (Fig. A), which are fed to a common radiator and capacitor plates mounted directly on pain points or their projections onto the body surface through protective pads.

The operation of the device is confirmed by the indicator 7.

The device provides a physiotherapeutic effect of an INCH-electromagnetic field with a wide spectrum of frequency and amplitude.

Claims (1)

Invention Formula A device for INCH therapy, comprising a low-frequency pulse generator, a driver, and an emitter connected to its output, characterized in that, in order to shorten the procedure, it is equipped with series-connected pulse decoder counter and amplitude modulator, installed between the generator and driver. as well as additional capacitor plates and a time interval former, the input of which is connected to the second output of the counter-decoder, and the output is connected to the second input of the modulator amplitudes, with the capacitor plates connected to the second output of the driver. FIG. 2 B. B, j ъ Pshp Thebes