RU1803152C - Device for carrying out local darsonvalle treatment - Google Patents

Abstract

Usage: in physiotherapy to affect the skin of the body. The inventive local darsonvalization device comprises a master oscillator 1, a shock excitation generator 2, an electrode 3, a bending detector 4, a comparison circuit 5, a first pulse shaper 6, a coincidence block 7, a second pulse shaper 8. Power saving is achieved by changing the frequency of the master generator depending on the operation of the device, i.e. depending on the effect of the device on the skin of a person, which provides increased electrical safety. 10 ill.

Description

With

with

00

oh co

Joint venture

Yu

figure 1

The invention relates to medical equipment and can be used in physiotherapy to affect the skin of the body.

The goal is to increase electrical safety by reducing power consumption. This makes it possible to operate autonomously from a source with a safer, lower supply voltage, such as a battery.

In FIG. 1 is an electrical block diagram of a device for local darsonvalization; figure 2, a and b - voltage diagrams at various points of the circuit during its operation. An embodiment of the master oscillator is shown in Fig. 3, the shock excitation generator is shown in Fig. 4, the envelope detector is shown in Fig. 5, the first pulse shaper is shown in Fig. 6, and the second pulse shaper is shown in Fig. 7.

Fig. 8 shows voltage plots that explain the operation of the master oscillator; Fig. 9 is a voltage plot for explaining the operation of a shock excitation generator; 10 is a voltage diagram illustrating the operation of the first pulse shaper.

Comparison scheme 5 can be implemented, for example, using a 597CAZ comparator. As a match block, an NAND element can be used. The proposed device for local darsonvalization (Fig. 1) comprises a driving generator 1. a shock excitation generator 2, an electrode 3, an envelope detector 4, a comparison circuit 5, a first pulse shaper 6, a coincidence block 7, a second pulse shaper 8. -.... ..

 "

The following are exemplary embodiments;

a.) The master oscillator 1 (FIG. 3) contains AND-NOT elements 9, 10, 11, a resistor 12, a capacitor 13. A rectangular pulse generator, the frequency of which depends on the value of the resistor 12, is assembled on the elements 9, 10, 12, 13 and capacitor 13. Depending on the signal at the control input, the AND-NOT 11 element passes or does not pass rectangular pulses to the output of the master oscillator 1.

b.) Impact generator 2 (Fig. 4) comprises a voltage converter 14, a switching device 15, a transformer 16, a resistor 17 and a capacitor 18.

Voltage converter 14 converts the voltage of the power source to a high voltage of several hundred volts.

The switching device 15 connects the left side of the capacitor 8 to the zero bus with the frequency of the input pulses. Transformer 16 converts the voltage of the primary winding - hundreds of volts, to a voltage of tens of kilovolts at the output of the secondary winding.

The resistor 17 protects the voltage transducer 14 from a short circuit 0 neither when the switching device 15 connects the left side of the capacitor 18 to the neutral bus.

Capacitor 18 serves to store energy.

5 The voltage transducer 14 may be made according to a known pattern.

I will take a picture of the operation of the generator of shock excitation 2. The diagrams of the voltages showing the operation of the generator of shock excitation 2 are shown in Fig. 9.

Voltage converter 14 pre-. forms the supply voltage of the circuit to a voltage of several hundred volts. The capacitor 18 is charged through the primary winding of the transformer 16 to the voltage value at the output of the voltage converter 14.

When applying to the input of the switching device 15 pulse rectangular

0 form, it is differentiated by a chain resistor 17, a capacitor 18 U1. A transistor 23 is opened by a negative surge. A positive voltage pulse U2 is generated on the collector of the transistor 23.

5 which opens the thyristor 26, as a result of which the left side of the capacitor 18 is connected to the zero bus U3. The inductance of the primary winding of the transformer 16 and the capacitor 18 form

0 oscillating circuit with damped KonlF

bath mi. With fluctuations in the directional circuit, the current periodically changes. In one

case it flows through thyristor 26, in

the other through diode 27. These oscillations with

The 5 primary windings of the transformer are fed to the second output of the shock generator. The first output of the shock excitation generator receives voltage from the secondary winding of the transformer

0 16, amplitude - tens of kilovolts,

c.) The envelope detector 4 of Fig. 5 contains a diode 28, resistors 29.30 and a capacitor 31 .. Resistors 29.30 attenuate the input signal .. .., and the diode 28 and capacitor 31 are isolated

5 envelope of high-frequency oscillations.

d) Comparison scheme 5 can be implemented, for example, using a comparator. 597CAZ.

e.) The first pulse shaper 6 fi g. 6 contains a trigger 32, the elements AND NOT

33, 34, 35, resistors 36, 37 and capacitors 38.39 and serves to generate a positive pulse of a fixed duration, delayed relative to the input signal for a certain time. Plots of voltages that explain the operation of the first pulse shaper are shown in FIG. THAT.

The trigger 32 is triggered by a positive edge of the input pulse, and produces a rectangular pulse of a certain duration Lh, which depends on the value of the resistor 36 and the capacitor 38. On the trailing edge of this pulse, using elements NAND 33,34,35 and an integrating chain resistor 37. a capacitor 39 produces a pulse of positive polarity. An integrating circuit is a resistor 37. The capacitor 39 plays a delay role and determines the duration of the output pulse.

e.) A match block can be implemented, for example, using an AND-NOT element.

e.) The second pulse shaper of Fig. 7 comprises a trigger 40, a diode 41, a resistor 42, a capacitor 43, and is designed to generate a rectangular pulse with a low active level. The duration of the output pulse is determined by resistor 42 and capacitor 43.

I will take pictures of the operation of the local darsonvalization device. Analyzing the operation of the prototype, it is seen that the main part of the consumed power is spent on the generation by the generator of shock excitation 2 pulses of damped oscillations of high voltage. The frequency of the generated pulses at the output of the shock excitation generator 2 depends on the frequency of the master oscillator 1. The frequency of the master oscillator is fixed and equal to 50 Hz. Therefore, if the frequency of the master oscillator 1 is reduced by several times, the power consumption is significantly reduced.

In the inventive device for local darsonvalization using blocks: envelope detector 4, comparison circuit 5, first pulse shaper 6, coincidence block 7 and second pulse shaper 8, the frequency of the master oscillator 1 is regulated depending on the operation of the device. That is, when the load, the human body, is not connected to the electrode 3, the master oscillator 1 generates rare pulses, and the energy consumption is negligible. When working on a load, that is, the human body, the master oscillator 1 generates pulses more often. When the electrode 3 is removed from the human body, the master oscillator 1 goes into an economical mode of a rare frequency.

Let us consider in more detail the operation of the device for local darsonvalization (Fig. 2, a

and b). The master oscillator 1 generates a pulse. As a result, the output is generator. In the case of shock excitation 2, a damping pulse of a high voltage oscillation is generated, which is supplied to the electrode 3.

A Envelope Detector 4 emits an envelope of high frequency vibrations. Comparison circuit 5 compares the input signal with the reference voltage U0n. If the input signal exceeds reference 5 or Pop, comparison circuit 5 generates. a high-level rectangular signal which is supplied to the second input of the matching unit 7.

. Simultaneously, the signal from the output of the master oscillator 1 starts the first pulse shaper 6, which generates a pulse delayed for a certain period of time relative to the front front of the input signal. This pulse is 5; arrives at the first input of matching block 7. As a result, a pulse appears at the output of the matching block, which starts the second pulse shaper 8, The second pulse shaper 8 generates a low-level pulse corresponding to a logical zero, which is fed to the control input of the master oscillator 1. As a result, the output of the master oscillator 1 stops the pulse generation for the duration of the control pulse from the output of the second pulse shaper 8. When the signal at the output of the second pulse shaper 8 is received the logical unit value, which sets the generator 1 again

an impulse is generated and the whole process is repeated again.

When approaching the electrode 3 with the human body or in contact with it (Fig.2, b)

5, an electric discharge occurs. Energy is expended on the electric discharge, i.e., in a circuit formed by a condensate; rum 18 and the primary winding of the transformer 16, additional losses are introduced.

0 In this case, the oscillatory process in the primary winding of the transformer 16V dies much faster. As a result, at the output of the comparison circuit 5, a pulse of a shorter duration appears, which arrives

5 to the second input of coincidence unit 7. The first input of coincidence unit 7 still receives a pulse from the output of the first pulse shaper 6, delayed for a certain period of time relative to the leading edge of the input signal at the input of the first pulse shaper 6. As a result, the output of the block of coincidence 7 no pulse is generated. In turn, the second pulse shaper 8 does not generate a low-level pulse, and the master oscillator 1 does not block. Therefore, the frequency of the output pulses at the output of the master oscillator 1 increases. .

When the electrode 3 is removed from the human body, the electric discharge between the electrode 3 and the human body ceases. Thus, the energy consumption for electric discharge is stopped, i.e., no additional losses are introduced into the circuit formed by the capacitor 18 and the primary winding of the transformer 16. Therefore, the decay time of the oscillations in the primary winding of the transformer 16 is increased, as a result of which the output pulse duration is increased at the output of the comparison circuit 5. At the output of coincidence block 7, a pulse appears again, which starts the second pulse shaper 8. The second pulse shaper 8 generates a low-level pulse, which blocks the master oscillator t. As a result, pulses appear less frequently at the output of the master oscillator 1.

The proposed device for local darsonvalization allows to reduce power consumption in comparison with the prototype. This can be easily verified, since a significant part of the consumed energy is spent on the generation of a high-voltage pulse arriving at electrode 3, and the prototype operates in the high-frequency generation mode and therefore consumes a lot of power.

The proposed local darsonvalization device operates with a high frequency of generating high voltage output pulses only if the electrode 3 is in proximity to or in contact with the human body. When the electrode 3 is outside the zone of influence, that is, when there is no electric discharge between the electrode 3 and the human body, then the claimed local darsonvalization device operates in the low-repetition mode of the high voltage output pulses. As a result, the power consumed is about the same amount of time as the difference in frequencies. That is, in pauses when the electrode 3 is outside the exposure zone, the local darsonvalization device consumes less power. In practice, the electrode 3 is part of the working time outside the area of impact, therefore, the claimed device for local

darsonvalization consumes less power. This is especially important for small-sized devices with a stand-alone power source, such as a battery pack.

The primary physical factors of the biological effect of the device are: an electric discharge in the air gap and in the excretory ducts of the surface layers of the skin and a high-frequency current flowing deep into the tissue.

Secondary factors are: an electromagnetic field in a wide frequency band, low-intensity ultrasonic vibrations that occur directly in the tissues of the body, chemically active substances - ozone, and nitrogen oxides in small quantities.

At the same time, secondary factors arise not only in the air gap, but also in the depths of the tissue due to ionization processes in the liquid medium of the excretory ducts of the sweat and sebaceous glands, which significantly distinguishes the effect of conventional physiotherapy.

The use of the device is possible for the treatment and prevention of skin diseases, diseases of the upper respiratory tract, neuralgic and vascular diseases, treatment of trophic ulcers, wounds, burns. The use of the apparatus for prophylaxis and is particularly effective. treatment of respiratory and viral diseases.

The device is intended for use in cosmetology practice, sports medicine, home physiotherapy, and in general treatment facilities.

Claims (1)

The claims A local darsonvalization device comprising a serially connected master oscillator, a shock excitation generator and an electrode, characterized in that, in order to increase electrical safety by reducing power consumption, an envelope detector, a comparison circuit, a first pulse shaper, and a matching unit are added to it , a second pulse shaper, wherein the input of the envelope detector is connected to the second output of the comparison circuit, the output of which is connected to the second input of the coincidence unit, the input is of the pulse former is connected to the output of the master oscillator, the output of the first pulse former is connected to the first input of the coincidence unit, the output of which is connected to the input of the second pulse former, the output of which is connected to the control input of the generator. 4 3 f and fig.Z T Ifff Vsh. 77 F-- Y7D Dh. /: & 1 F CO about OJ SL o