SU1250308A1 - Multichannel electrostimulator - Google Patents

Description

The invention relates to medical technology, namely to electrophysiotherapeutic devices, and can be used to prevent the effects of reduced mobility.

The aim of the invention is to reduce the stimulation time due to the simultaneous modulation of the duration of the packages and pauses in each channel, i.e. ensuring the required ratio of the durations of the premise-pause periods in each of the channels, which to the maximum extent would correspond to the excitation characteristics of the stimulated structure.

The drawing shows a structural diagram of a multi-channel electrostimulator.

The multichannel electro-stimulator contains a setting device 1 of the modulation law, a serially connected modulator 2, a generator 3, as well as serially connected output stages 4 and electrodes 5. The setting device 1 of the modulation law includes a pulse-width-modulated pulse modulator 6 and connected to it a modulator program control unit 7 and a one-shot 8, the input of which is connected to a pulse-width modulator 6. The output of a pulse-width modulator 6 is connected to the modulator 2, and the generator 3 is connected to output stages 4 and faradic impulses.

The device works in the following way.

Unit 1 of the modulation law generates signals of variable duration, alternating with pauses. The limits of the ratio of the duration

Editor N. Shvyschka Order 4356/7

Compiled by L. Solovyov Tehred I. Gaidosh

Corrector M

Circulation 660 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

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In this case, the set-up and pauses are set in the setting unit 7 of the modulation program, for example, taking into account the preliminary performance of electromyographic oscillations of biological structures to be stimulated, as well as taking into account the limits of biorhythmic oscillations of excitation durations of these structures (muscles) .

The signals from the output of the setting device 1 of the modulation law are fed to the modulator 2. The latter, during the sprinkling period, signals the modulation of the pulses in amplitude and frequency (AFM), fed by & a to the different modulator inputs of the generator 3, in which the parcels of the squares are generated unipolar pp pulses. Control signals containing information for AFM stimuli from the output of the generator 3 are received through an input transistor switch (not shown) from the output stage 4 to its inductive coil (not shown), from the secondary winding of which (due to self-induction) bipole Frequency AFM pulses of a faradic current, having the form of impulses of 0 action (pulses generated in the interception of Ranvier), are fed through electrodes 5 to the object being stimulated.

During the session, the sending time is automatically changed and, accordingly, the number of faradic stimulus pulses in one cycle of electrical stimulation, which provides an impact on the structures (mypps) with different or varying excitation durations (periods of development of electrical activity).

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Proofreader M. Samborska

Claims (1)

A MULTI-CHANNEL ELECTRIC STIMULATOR containing a modulator, a modulator, a generator connected in series, and a series output connected to a pulse-width modulator, the output of which is _x connected to a modulator, and the generator ^ is connected to output stages representing faradic pulse shapers · I