RU1813004C - Apparatus for electroanalgesia - Google Patents

Abstract

Usage: in medical practice for electroanalgesia by auricular stimulation. The inventive device contains a series-connected reference voltage source, a temperature sensor and a temperature meter, a pulse width controller, the input of which is connected to the output of the temperature sensor, and the output - with the first input of the duration driver, an amplitude controller, the inputs of which are connected to the outputs of the transformer and the outputs are connected to the electrodes through a current meter, a pulse frequency meter, a clock for the existence of frequencies, a differentiating element and a switch, one in the path of which is connected to the output of the pulse frequency meter, the other inputs to the outputs of the master (14) the time the frequencies exist, and the output to the input of the low-frequency pulse changer, one output of which is connected to the outputs of the pulse frequency meter and differentiating element, the other output is connected to the second input shaper duration, the third input of which is connected to the output of the differentiating element. 1 ill. SB with

Description

The invention relates to medicine, namely to electrical stimulants.

The aim of the invention is to increase the level of activation of the endogenous antinociceptive system of the body.

The drawing shows a functional diagram of a device

The device comprises a low-frequency pulse generator 1, a switch 2, a differentiating element 3, a shaper

4 durations of current pulses, amplifier 5, transformer 6, regulator 7 of the amplitude of electric current pulses, meter 8 of current, electrodes 9, 10, temperature sensor 11, regulator 12 of duration of electric current pulses, source 13 of the reference voltage, reference 14 frequency stimulation, meter 15 of the frequency of pulses, meter 16 of the temperature of the skin.

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Device for electroanalgesia works as follows.

The active electrode 9 is lubricated with electrode paste and fixed on the corresponding auricular reflexogenic zone, and the passive electrode 10 on the mucous membrane of the vestibular surface of the frontal area of the upper and lower jaws under the lips. The temperature sensor 11 is installed on the skin of the face in the appropriate intended intervention of zone-segmented innervation, for example, in the projection area of the infraorbital or chin hole on the right or left. When the temperature of the patient’s skin changes under the influence of stimulation, the signal from the output of the sensor 11 through the regulator 12 of the electric current pulse duration is fed to the input of the current generator 4, and the duration of the current pulse changes depending on the temperature increase. From the output of the driver 4, the signals through the current amplifier 5, step-up transformer 6 and the pulse amplitude controller 7, are supplied to the passive electrode 10. For stable operation of the temperature sensor 11, a reference voltage source 13 is used, the output of which is connected to the sensor input. The stimulator of the existence of stimulation frequencies is set by the timer 14 of the existence of each of the selected frequency ranges from 1 to 40 s. Different pulse frequencies are generated by a generator 1, the input of which is supplied with a control signal from the output of the switch 2, the inputs of which are connected to the outputs of the frequency master 14. The regulator 7 of the amplitude of the pulses of the electric current sets the amplitude of the pulses according to the patient's subjective sensation of moderate or intense vibration under the active electrode 9.

The single-shot driver 4 of the current pulse duration is triggered by positive electric current pulses coming from the output of the differentiating element 3. The average current value is determined by the current meter 8 included in the diagonal of the bridge circuit. The current pulses through the bridge circuit and current meter 8 are supplied to the active electrode 9. An electric current passes through the circuit; active electrode 9 — patient tissue — passive electrode 10 — device common bus. Automatic increase in load current, which is the patient’s tissue located between active passive electrodes 9, 10,

the stimulation process allows maintaining its optimal, most effective mode, which is initially determined by the subjective sensation of the patient with

a decrease in the sensitivity of his body resulting from electrostimulation until the onset of an analytical effect sufficient for painless intervention.

Automatic adjustment of the average value of the electric current during electrical stimulation and the onset of the analgesic effect is carried out from the output of the low-frequency generator 1 of the electric current pulses to the input of the pulse shaper 4. The dependence of the duration of current pulses from 100 to 600 μs with an increase in skin temperature from 31.5 to 36.5 ° C during auricular electropuncture with a certain approximation is linear. Thus, a simultaneous increase in the duration of stimulating pulses with a simultaneous decrease in their frequency makes it possible to maintain a stable value of the average value of the stimulation current, adequately activate the opiate and angiotensin mechanisms of the endogenous antinociceptive system, increasing

adaptive capabilities of the patient’s body.

The use of the proposed device for electroanalgesia is characterized by a higher level of activation of the endogenous antinociceptive system of the patient; increased level of psychoemotional state of patients in the preoperative period; lack of pain during operative restoration of caries and preparation of teeth for fixed prosthetics; stability indicators. peripheral hemodynamics and frequency / respiration ..

Claims (1)

The claims A device for electroanalgesia comprising a low-frequency pulse generator and series-connected duration former, amplifier and a transformer, as well as electrodes, characterized in that, in order to increase the level of activation of the endogenous anticyceptive system of the body, It contains a series-connected source 5 reference voltages, a temperature sensor and a temperature meter, a pulse width controller, the input of which is connected to the output of the temperature sensor, and the output to the first input of the driver  duration, amplitude controller, input which is connected to the outputs by transformers, and the outputs are connected to the electrodes through a current meter, a pulse frequency meter, a frequency existence timer, a differentiating element and a switch, one input of which is connected to the pulse frequency meter output. other inputs are to the output of the generator the lifetime of the frequencies, and the output is to the input of a low-frequency pulse generator, one output of which is connected to the inputs of the pulse frequency meter and the differentiating element, the other output is connected to the second input of the duration driver, the third input of which is connected to the output of the differentiating (its element.