RU2128529C1 - Multichannel stimulator - Google Patents

Abstract

FIELD: medical devices, in particular, cosmetology. SUBSTANCE: device has power supply, mode selection unit, current regulation unit in patient's circuit, digital processing unit, output pulse generator, set of electrodes. Digital processing unit provides possibility to analyze amplitude of current pulses using software digital algorithms, suppress unwanted alternations, and to allow reception of wanted values by of pulse generators for final output signal generation. EFFECT: facilitated comfort of patient upon pulse current treatment, increased safety. 2 dwg

Description

 The invention relates to medicine and can be used for electrical stimulation of muscles, including in cosmetology.

 Known multi-channel stimulator (WO 87/00760) for neuromuscular stimulation, containing a pulse source with electrodes, generating a series of electrical pulses with different frequencies, and a programming element that can be detachably connected to the pulse source and which has the ability to record treatment programs on punched cards for later control them source of impulses. A programming element with the ability to use software numerical algorithms is intended primarily for storing on a external medium (punched card) a patient treatment program, including setting parameters of a stimulating element.

 The disadvantage of the stimulator is the impossibility of an operational digital analysis of the set parameters of the electric stimulator and digital synthesis of the output signals under the influence of software numerical algorithms.

 Known multi-channel stimulator (RU 2056118) for acting on the muscles of the face and musculoskeletal system, containing a source of electrical signals, means of excitation of electrodes, made in the form of a block of output shapers, a block of regulators of amplitude of pulses, as well as many electrodes that work independently or in a group. In a known stimulator, pulse amplitude controllers are located between the formers and the electrodes.

 A disadvantage of the known stimulator is the inability to provide the necessary control over unauthorized changes in the values of the regulators that occur during normal operation due to wear of the contact surface of the potentiometers. In the event of the occurrence of such phenomena, an unauthorized change in the amplitude of the current pulses in the patient circuit can occur, leading to extremely unpleasant and painful sensations in the patient (sharp muscle contraction, etc.).

 The problem to which the invention is directed is the creation of a multi-channel electrical stimulator, in which all undesirable unauthorized changes in the amplitude of current pulses are eliminated by analyzing the set amplitude values by a digital processing unit using software numerical algorithms, and the necessary control is applied to the output pulse shapers to directly form the output signal, which eliminates the effect of skin irritation of the patient associated with a nonlinear dependent Stu I (U) - the current between the two parts of the body on the voltage applied to them.

 The technical result is an increase in patient comfort when exposed to muscles by a pulse current, increased safety.

 For this, a digital processing unit with a program of numerical algorithms connected to a power supply unit, and a mode selection unit and a regulator unit are introduced into a multichannel electro-muscle stimulator containing a power supply, a block of current regulators in the patient circuit, a mode selection block, output pulse shapers and electrodes current strengths in the patient circuit are connected through the digital processing unit to the input of each output pulse former, the output of which is connected to the electrodes, while a cond is introduced into the output circuit of the pulse former nsator for generating a stimulating pulse without DC component.

 The invention is illustrated by drawings, in which in FIG. 1 shows a block diagram of a multi-channel electrical stimulator, FIG. 2 - pulse shape in the patient circuit.

 A multi-channel electrical stimulator for muscles contains a power unit 1, a mode selection unit 2, a block 3 of current regulators in the patient circuit, a digital processing unit 4, an output pulse shaper 5, a plurality of electrodes 6.

 The power supply unit 1 provides galvanic isolation of the electrical stimulator from the mains and generates the voltage necessary to power the remaining units.

 Unit 2 of the mode selection allows you to select the desired mode of operation of the electric stimulator - the sequence of formation of the output pulses on the output channels, setting the frequency of the pulses on the output channels, setting the duration of the procedure, etc. Selection is made by pressing the corresponding keys or by changing the value of the setting potentiometer. At the same time, the selected modes are displayed visually using the display elements (LEDs, digital indicators).

 Block 3 of the current regulators in the patient circuit allows you to control the amplitude of the output pulses in the patient circuits. The amplitude control for each output channel is carried out by changing the value of the master potentiometer corresponding to this channel.

 The output pulse shapers 5 provide the direct formation of the output current pulse in the corresponding patient circuit in the form of the modes specified by the selection unit and with the amplitude set in the current regulator unit. They also make it possible to take into account the nonlinear dependence of I (U) - current between two parts of the patient’s body on the voltage applied to them and to form a stimulating pulse without a constant component due to the introduction of a capacitor in the output pulse shapers.

 Block 4 of digital processing allows you to analyze the value of the amplitude of the current pulses using software numerical algorithms, eliminate their unwanted changes, and then allows the necessary values to go to the output pulse shapers for the direct formation of the output signal.

 Multichannel muscle stimulator works as follows.

 Before starting the procedure, the electrodes are wetted, then they are placed and fixed as prescribed by the doctor. All current regulators of the unit 3 are set to zero. After turning on the electric stimulator in the network, the power supply unit 1 generates a supply voltage for all other blocks. The mode selection unit 2 sets one of the two modes “Group” or “Ring”, sets the duration of the excitation signal during which current pulses are generated. Duration is 1, 3, 6 seconds. The pacemaker can operate in a constant sequence of current pulses (without pauses). In this case, the pulse repetition rate is set in the range from 10 to 150 Hz. The maximum output level is 100 or 20 mA. If set to “20 mA”, the current regulators will change the amount of current from 0 to 20 mA. Block 2 mode selection change the duration of the electrical stimulation procedure (maximum 60 minutes). After the time has elapsed, a long beep sounds and the procedure is completed. During the procedure, a change in duration is possible. Using the current regulators of unit 3 for each channel, the amplitude of the current pulses in the excitation signal is set from 0 to 100 mA (or from 0 to 20 mA).

 In the first “Group” mode of electrical stimulation, current pulses are first generated, for example, on odd channels, then on even channels, then generation is again carried out on odd channels, then on even ones. When working in the "Group" mode, part of the channels can be included in the "Constantly" mode. In this case, current pulses are generated with a constant frequency from 10 to 150 Hz, depending on the setting of the frequency controller.

 In the second mode of electrical stimulation "Ring", current pulses are first generated simultaneously on the first and second channel, then on the third and fourth, etc., and then again on the first and second channel. When operating in the "Ring" and "Constant" modes, pulses are generated on channels with a fixed frequency from 10 to 150 Hz, depending on the setting of the frequency controller.

 The digital processing unit 4 reads the values selected by the user using the controls in the mode selection unit 2 and, depending on their settings, provides control signals to those output pulse shapers at which current pulses should be generated at a given time. The amplitude of the current pulse in the patient circuit is set by the digital processing unit 4 in accordance with the value read from the unit 3 of the current regulators using software-implemented numerical algorithms.

 Under the influence of a low-frequency bipolar pulsed current (Fig. 2), the blood circulation increases in the body from the stimulator, motor functions, sensitivity are restored, pain is reduced, bronchospasm is removed, drainage function of the lungs are improved, as well as motor-evacuation and secretory functions of the intestine and urination regulation are restored sexual activity, all types of metabolism improve (fatty, carbohydrate, protein), tissue respiration and trophic function are normalized, overall force-velocity-reaction, resistance and endurance.

 A multi-channel electrical stimulator can be effectively used for the rehabilitation of patients with diseases and injuries of the musculoskeletal system, nervous system (especially with central and peripheral paresis and paralysis, including in cancer patients who received radical treatment), with diseases of the cardiovascular, respiratory, ear-throat-nasal, genitourinary and other systems, the gastrointestinal tract, non-surgical correction of the figure and face, treatment of cellulite, obesity, lymphedema, prevention of osteoporosis, hypodynam AI, etc., as well as for general healing and strengthening the body (including for "bodybuilding" and improving athletic performance), etc.

Claims (1)

 A multi-channel muscle pacemaker containing a power supply, a block of current regulators in the patient circuit, a mode selection block, output pulse shapers and electrodes, characterized in that a digital processing unit with a program of numerical algorithms connected to a power supply is inserted into it, and a mode selection block and a block of current regulators in the patient circuit are connected through a digital processing unit to the input of each output pulse shaper, the output of which is connected to the electrodes, while in the output circuit of the pulse shaper A capacitor was introduced to form a stimulating current pulse without a constant component.

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