SU1242185A1 - Electrostimulator - Google Patents

Description

The invention relates to medical technology and relates to an electrostimulator intended for carrying out treatment-restorative, therapeutic-prophylactic, training-strengthening and other procedures.

The purpose of the invention is the regulation of contractions depending on the steepness of the increase in impulses, as well as the regulation of the shape of oscillation packs.

Figure 1 shows an electrical functional diagram of the electrostimulator; Fig. 2 is a circuit diagram of a generator for sprinkling a frequency band; FIG. 3 is a circuit diagram of a driver of oscillation packs and a driver of an output modulating signal connected to a power source; figure 4 - one of the possible forms of the original pulse-pack sinusoidal damped oscillations; Figures 5 to 9 show the generated symmetric, asymmetric, or detected modulated signals in the form of a series of envelopes of oscillations with a forward gentle front and a steep drop in voltage amplitude.

The electrostimulator contains a power source 1 connected to a shaper of 2 packs of oscillations, for example, damped sinusoidal oscillations, a generator 3 of the frequency of sending bursts of oscillations, a shaper 4 of a modulating signal, and electrodes 5.

The power source may be either mains or stand-alone, for example, with batteries and a charging device or batteries with galvanic cells (batteries).

The shaper of oscillation packs will consist of the output transformer 6, an additional locking transformer 7, and a magnetic control pin 1242185

ten

15

20

connected magnetically controlled to the second extreme terminal 20 of the coils of the locking transformer. The winding of the output transformer is shunted by a variable resistor designed to regulate the magnitude of the output current and the amplitude of the voltage of the oscillations when P5IH interrupts the current passing through one of the sections (12) of this contact. alternator is connected to the first terminal 2 for connecting the electrodes, and w terminal 23 is connected via a switch to the positive power source

Dp of receiving asymmetric and detected (fig.Z and 9) promoted signals, a kidney is provided, consisting of variable resistor 24, diodes 25 and 26, transponder 27, third terminal 28 and a terminal swarm.

The indicator lamp of the light during the period of the modulating signal, the resistor 30, which acts as a damping resistor, and the switch 31 for connecting all the nodes of the electric motor to the power supply and their switching on are introduced into the circuit of the bundle packer driver: . one) ,

Extreme leads 32 and 33 of the winding of the tread transformer are connected to the power supply through a reader. The frequency generator sends 3-bursts of oscillations (Fig. 2) and a modulating signal former (figs are made as self-oscillatory l-typevibrators - each with two bipolar transistors 34, 35 36, 37 with two time defining RC circuits including capacitors 38, 39 40, 41, resistors 42, 44, 49 or 48, 50, and the resistors 43, 45 provide the operation modes of the cartoon

25

thirty

8 and key bipolar transistor vibrators with direct current.

torus 9, the emitter circuit of which is connected to the middle 11 of the output transformer winding, divided into sections 12 and 13, and to the terminal 4 of the winding of the locking transformer, section 15 of which is bridged by a resistor 16. The base circuit is connected to the middle terminal 17 of the closing winding of the transformer divided into sections 15 and 18, and the collector circuit to the minus of the supply source and through the matching bipolar transistor 19 s in series

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enabled magnetic contact to the second extreme terminal 20 of the winding of the locking transformer. The winding of the output transformer is shunted by a variable resistor 21, designed to control the magnitude of the output current and the voltage amplitude of the oscillation packs that occur when the current passing through one of the sections (12) of this winding is interrupted. The moving contact of the variable resistor is connected to the first terminal 22 for connecting the electrodes, and the second terminal 23 is connected via a switch to the plus of the power supply.

Dp of receiving asymmetric or detected modulated signals (Fig. 3 and 9) includes a chain consisting of a variable resistor 24, diodes 25 and 26, a switch 27, a third terminal 28 and a second terminal.

An indicator lamp 29, illuminated during the period of the modulating signal, a resistor 30, acting as a damping resistor, and a switch 31 for connecting all the electrostimulator units to the power supply and disconnecting them : (Fig. 1),

Extreme leads 32 and 33 of the winding of the treadmill transformer are connected to the power source through a switch. The parcel frequency generator — a packet of oscillations (FIG. 2) and a modulating signal driver (FIG. 3) are made in the form of self-oscillating l-type vibrators - each with two bipolar transistors 34, 35 or 36, 37 with two time defining RC chains, including capacitors 38, 39 or 40, 41, resistors 42, 44, 49 or 46, 48, 50, with resistors 43, 45 and 47 providing multi5 operation modes

0

50

A matching bipolar transistor 51 and a winding 52 of the magnetic contact of its contact are connected to the multivibrator of the generator of the frequency of sending oscillations, and to the multivibrator

the modulator of the modulating signal is the time setting of the EC circuit, consisting of a variable resistor 53 and capacitance 54, which ensures the formation of a modulated signal.

The matching transistor 55, as well as the matching bipolar transistor 9 and resistor 56, are intended for

matching the output impedance of the multivibrator of the modulating signal generator A with the low input impedance of the winding of the blocking transformer 7.

Variable resistors 49, 50 and 51 are designed to regulate:

49- frequency sending packages fluctuations

50 is the duration of the sending of the modulating signal and 51 is the steepness of a smooth increase in the amplitude of the voltage of the modulating signal.

The principle of operation of the electrical circuit of the electrostimulator is as follows.

When the power is turned on by the switch 31 (Fig. 3), the oscillator 3 of the frequency of sending oscillations (Fig. 2) supplies an electric pulse to the coil of the magnetically controlled contact, and its contacts 8 are closed. At the same time, the modulating signal shaper 4 opens the matching transistor 19. With the transistor 19 open and the contacts 8 closed, the current from the power source 1 passes through the winding section 18 of the gate transformer 7 to the base of the key bipolar transistor 9, which then opens. The winding of the locking transformer 7 speeds up the process of periodically locking the key bipolar transistor 9, and when this transistor is opened, the current passes through the winding section 12 of the output transformer 6, forming a magnetic field.

In the self-oscillating mode of the generator 3, the frequency of sending oscillation packs, contacts 8 periodically open, and self-induction EMF occurs in section 13 of the winding of the output transformer 6, which is used to receive packets of damped oscillations, which are the initial pulse to form the output modulated signal.

The amplitude of the decaying oscillation packs depends on the base current of the key transistor 9, in the circuit of which the matching transistor 19 is sequentially controlled by the shaper 4 of the modulating signal.

The frequency of sending oscillation packs is determined by the frequency of triggering the contacts 8 to. The variable resistor 49 adjusts it.

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To form a modulating signal in the form of an envelope of a series of oscillation packs with a front half-front and a steep voltage drop, a self-oscillating multivibrator is used on transistors 36 and 37 with capacitance 40 and 41 and a capacitance 54 that determines the front-front criticality and is adjustable by a variable resistor 53.

A symmetrical modulated output signal (Fig. 5) goes to terminals 22 and 23, and a symmetric or detected (Figs. 6-9) to terminals 23 and 28, and the asymmetry is achieved by turning on the diode 25 or 26 by switch 27 and is controlled by a variable resistor 24.

When the diode 25 is turned on, it is possible to obtain modulated signals according to FIGS. 6 and 8, and when diode 26 is turned on, the modulated signals according to FIGS. 7 and 9 are activated.

Thus, the original elements of an electrostimulator with a battery source of power are: a 4.5 V battery, two transformers, eight N bipolar transistor, a magnetically controlled contact, two diodes, five capacitors, fifteen resistors, one switch , one switch, one LED, one way.

The proposed electrostimulator due to the exclusion from the electric circuit of a self-contained generator of oscillations and an independent voltage amplifier of the output stimulating signal increases and simplifies the reliability of the electrical circuit, producing a symmetrical, asymmetric or detected stimulating output signal in the form of an envelope of a series of oscillations for the stlulation of the neuromuscular structures of the musculoskeletal apparatus or organs of humans and farm animals.

50 The electrostimulator was tested in clinical conditions with treatment of diseases of the musculoskeletal system (neuritis, plexitis, arthritis, osteochondrosis); paralysis and paralysis, whose central origin is caused by impaired cerebral circulation and brain tumors; auditory neuritis and gl ghoty; paresis intern35

40

45

these organs - the bladder, stomach, intestines; in sports practice, dp is the treatment of functional disorders of the joints and muscles, as well as conditions after injuries and bruises. due to overloading. 2

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zok; to suppress pain of various origins; for the treatment of primary glaucoma and some forms of retinal degeneration; in veterinary medicine dp treatment of fruitlessness of agricultural animals.

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Editor N. Dankulich

Compiled by N.Artsybasheva Tehred M.Hodanich

Order 3640/10 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

FIG. 9

Proofreader M. Demchik

Claims (2)

1. ELECTRICAL STIMULATOR containing electrodes, a power source and a shaper of oscillation bursts, an output shaper and a burst frequency generator, characterized in that, in order to regulate muscle contractions depending on the steepness of the increase in impulse, the burst shaper includes an output transformer connected with an output signal regulator, and a key circuit that is connected to the midpoint of the transformer winding, the output driver and the burst frequency generator. 2. The pacemaker according to claim 1, characterized in that, in order to regulate the shape of the packs, a chain is introduced into it, consisting of a resistor, diodes and a switch and connected to the output signal regulator. 242185 W.1