Electrotherapeutic apparatus

 

(57) Abstract:

The device is intended for the diagnosis and normalization of the functional state of the body by affecting the brain through the skin skull an electric current is supplied through the contact electrodes. The technical result is to increase functionality and to increase the autonomy of the device. In the apparatus containing the control unit, power supply, galvanic decoupling unit, d / a and a first analog-to-digital converters, the protection unit, the switch, the electrodes of the oscillator, the unit of measurement specified currents and frequencies, the unit of measurement affecting currents, frequencies and resistances, the logical unit, inputs of block matching, active electrodes, a reference electrode, a five-channel amplifier, the second analog-to-digital Converter block of mathematical processing. 4 Il.

The invention relates to medicine, namely to devices for diagnostics and therapy with exposure to electric current supplied through the contact electrodes, and is intended for recording, processing and analysis of constant potentials of the brain with consequent impacts on the head the third on the improvement and development of methods and normalization methods for different types of functional disorders.

Known electrotherapeutic apparatus (patent RF N 2000124) containing interface unit, digital to analog Converter (PAI), control unit, power supply, connected to user interfaces and DACS, power supply, covered by a negative feedback current and incorporating operational amplifier and a transistor circuit with a reference resistor in the emitter circuit of the output transistor and the electrode connected to the patient, the switch connected to the connection unit and the power supply output switch is connected to the electrodes, one of the inputs is connected to the collector of the transistor, the emitter of which is connected through a resistor to the power bus, and the base is connected to the middle point of the divider of two resistors connected between the power bus and zero bus, a second input switch connected to the collector of the output transistor, the base of which is connected through a resistor with the output of the operational amplifier; a current amplifier input a second operational amplifier, a noninverting input connected through a resistor to the base and emitter of the output transistor, the inverting input of which is connected through a resistor with its own output and the output of the first operational amplifier, and the input is connected to and is outinen with the output of the second operational amplifier, connected also with power supply unit; a protection unit, coupled to the DAC output, the current amplifier and power supply; galvanic decoupling unit connected to the interface blocks for communication and power supply, the input of the DAC and the ADC output. Zero bus, referred to above, is isolated from the neutral bus of the computer.

The disadvantage of this device are low functionality due to the small number of plug electrodes and a small number of implemented treatment programs and a relatively narrow band of operating frequencies.

Also known electrotherapeutic apparatus ( WO 97/01371 A1, 16.01.97) that contains the control unit, the output of which through the power supply is connected to the first output of the protection unit, and its input - output through the galvanic decoupling unit with the output of the ADC and DAC input, respectively, of the switch, to the first outputs of which are connected to the respective electrodes, entered the master oscillator, the unit of measurement specified currents and frequencies, the unit of measurement affecting currents, frequencies and resistances, logical unit, and the DAC output through the master oscillator is connected to a second input of block protection the first output of which is connected to the input switch, the second output of which through the unit measuring the impact of the United respectively with the second output block protection through the unit of measurement specified currents and frequencies with the second output of the master oscillator and a second output unit dimensions affecting currents, frequency and resistance, and its output to the input of the ADC.

Replacement in the diagram of the apparatus of the current amplifier in a master oscillator allows to significantly expand his band of frequencies, and the introduction of schemes for measuring asked impinging currents and frequencies improves the efficiency and reliability of the treatment process.

The presence in the apparatus of the analog-to-digital Converter can be entered into the computer in digital form the signal that is adequate to the current in the load, to provide automatic and visual verification of compliance with current specified for management options current impact.

The switch allows you to use a large number of electrodes attached at different points, and change during treatment current and frequency in a wide range of required medical practice.

The logical unit performs the docking of the protection unit and units of measurement specified and influencing parameters with analog-to-digital Converter.

Protection block allows the drop to 0 voltage on Aki, isolating circuit device electrically connected to the electrodes from the electrical circuits of the computer.

However, this apparatus does not allow you to diagnose functional and pathological conditions of the body, to store the information and display it at any stage of treatment and diagnosis.

Task - expanding functionality and increase the autonomy of the device.

The invention is illustrated in Fig. 1 to 4, where Fig.1 presents a functional diagram of the apparatus of Fig.2 - form of the signals at the output of the switch; Fig.3 - form signals with frequency filling at the output of the switch; Fig. 4 a, b - connection diagram electrodes.

Electrotherapeutic apparatus (Fig. 1) contains the block matching 1, the control unit 2, the power supply unit 3, the galvanic decoupling unit 4, DAC 5, the first ADC 6 oscillator 7, the protection block 8, unit of measurement specified currents and frequencies 9, the unit of measurement affecting currents, frequencies and resistances 10, switch 11, electrode 12, logical block 13, the active electrode 14, a reference electrode 15, a five-channel amplifier 16, the second ADC 17 and the mathematical processing unit 18. The control unit 2 is output via the power supply unit 3 is connected with pervogo ADC 6 and the inputs of the DAC 5. The DAC output 5 via the master oscillator 7 is connected to the second input of the protection unit 8, the first output unit 8 is connected to the input of the switch 11. To the first inputs of the switch 11 is connected to the electrodes 12. The second output switch 11 through the block 10 is connected to the third input of the protection unit 8. The inputs of the logic unit 13 are connected respectively with the second output protection unit 8, through the measurement unit 9 with the second output of the oscillator 7 and the second output unit of measurement affecting currents, frequency and resistance 10. The output unit 13 is connected to the input of the first ADC 6. The block matching 1 is associated with the mathematical processing unit 18 and the control unit 2. Active 14 and the reference electrode 15 are connected through a five-channel amplifier 16 with the second ADC 17, the output of which is connected to the mathematical processing unit 18. The output unit 18 through the block matching 1 is connected with the control unit 2.

Electric mill volt signal level, which is removed from the electrodes 14 and 15 (active electrodes 14 are arranged along the sagittal line: frontal, Central, occipital regions, as well as in the right and left temporal divisions, and the signal of the reference electrode 15 is amplified by the amplifier 16 and is converted into digital form by the ADC 17, after h is ectrode 14, then it is subtracted from the value of the potential of the electrode 15, thanks to that fixed true value of the level of constant potential (SCP) brain of the patient. The received data is transferred in the unit of coordination 1, where it is automatically processed, they are built maps of the distribution of SCP patient are compared with the maps obtained with monopolar measurement values UPP.

However, in some cases informative is variance analysis of SCP in each of the leads from the average values registered in all regions of the head. This allows the estimation of local values of the SCP in each area with the exception of influences coming from the reference electrode. This is especially significant when the local lesions of the brain, such as stroke.

After statistical analysis of the deviations of the experimental values from the reference block 1 operator calls the appropriate therapeutic program.

According to a given program unit 1 sends a control signal which is supplied to the control unit 2 (BU).

BOO sends a signal to activate the power supply unit 3 and an enable signal to the switch 11. One is ASKI 4 and digital-to-analog Converter 5. The output signal generator 7 through the protection unit 8 is supplied to the switch 11 for the procedure. Under the influence of the gate signal from the control unit 2 generated signal is applied to the electrodes 12. In addition, the signal from the oscillator is supplied to the measurement unit 9. The measurement unit 9 real-time measures signals (current, frequency) of the oscillator 7. The signal, affecting the patient through electrodes 12, is supplied to the measurement unit 10. The measurement unit 10 allows you to measure applied to the electrodes, current, frequency and resistance of the patient during the procedure as well as before and after it. With blocks of dimension 9 and 10, the signals are sent to the logic unit 13 and through the ADC 6 and unit 4 to the control unit 2, and then in block 1, implementing feedback. Unit 1 analyzes the received signals and controls the further therapeutic process. In the event of a failure of the operation signal from the protection unit 8 is supplied to the block 13. Logical block 13 through the a / d Converter and unit 4 sends a signal to the control unit 2, and then on unit 1.

Autonomous power supply 3 in the event of a failure in the external circuit provides power to the circuit before the end of the procedure.

In the event of an internal failure or nesota voltage on the electrodes from 6 mA to 0 for 10 in accordance with the requirements of medical technology.

The switch 11 in accordance with the gate signals of the control unit 2 allows the signal according to therapy program on one or all 4 patients simultaneously.

The apparatus operates in the frequency regime from 5 to 10000 Hz amperage electrodes from 0 to 6 mA and the resistance of from 2 to 7 kω.

Electrotherapeutic apparatus allows for special methods of analysis and tomografichyeskogo mapping SCP to produce an estimate of the total energy consumption of the brain and its separate regions, as well as to diagnose and treat a wide range of functional and pathological conditions in the area:

1) Therapy:

cardiology, pulmonology, gastroenterology, dermatology, endocrinology, rheumatology.

2) Surgery:

abdominal, thoracic, trauma, urology, combustiology.

3) Neurology.

4) Psychiatry.

5) Gynecology.

6) Rehabilitation.

7) Sports medicine.

The device complies with the requirements of electrical safety instruments medical equipment and guarantees a comfortable mode impact on the patient.

Electrotherapeutic so the first entry - exit through the galvanic decoupling unit with the output of the first analog-to-digital and to the input of digital to analog converters, respectively, to the first output switch connected to the corresponding electrodes, the output of the digital to analogue Converter through the master oscillator is connected to the second input of the protection unit, the first output of which is connected to the input switch, the second output of which through the unit of measurement affecting currents, frequencies and resistances connected to the third input of block protection, three inputs of the logic block are connected respectively to the second output of the protection unit, through the unit of measurement specified currents and frequencies with the second output of the master oscillator and the second output unit of measurement affecting currents, frequencies and resistances, and its output to the input of the first analog-to-digital Converter, characterized in that it introduced additional block matching, the active and reference electrodes, five-channel amplifier, the second analog-to-digital Converter and the mathematical processing unit, the output of which through the block matching is connected to the second input - output control unit, and input via a second analog-to-digital Converter to the output channel at the

 

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5 cl, 2 dwg

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