Series-parallel dual-channel high-frequency electrotherapy equipment

Abstract

The invention relates to an electrotherapeutic device comprising: N electrodes (212, 222, 240), said N = 2 or 3; two or more sine wave voltage generators (210, 220), said two or more voltage generators being separated by a transformer (211, 221); a first series configuration in which N = 2, the electrodes 212, 222 are active electrodes, two voltage generators are arranged in series, the electrotherapeutic device not comprising a ground electrode 240; a second parallel configuration in which N = 3, two electrodes 212, 222 of which are active electrodes connected to the voltage generators 210, 220, respectively, one electrode 240 is equipped as a ground electrode for forming a ground connected to the voltage generators 210, 220, respectively, and the two voltage generators are arranged in parallel; and a control device equipped to alternately adopt a first series configuration and a second parallel configuration.

Description

Technical Field

[0001] The present invention relates to a high-frequency electrotherapy device for treatment or beauty. The present invention can be particularly used in the field of electrotherapy for diathermy or conductance therapy. Background Art

[0002] Electrotherapy is a safe non-invasive technique that uses electricity for therapeutic purposes. This technique is effective in relieving pain, strengthening muscle fibers, or accelerating the healing of biological tissues. There are mainly three groups of frequencies used in electrotherapy: low frequency (1 Hz - 150 Hz) for stimulating superficial nerves, medium frequency (1 kHz - 100 kHz) for stimulating deep nerves, and high frequency (100 kHz - 1.2 MHz) for selective epidermal or deep diathermy and promoting healing. Generally, low frequency (LF) and medium frequency (MF) are called electrical stimulation, and high frequency (HF) is called radio frequency. For this different type of current used in electrotherapy, it circulates between two conductive elements or conductive plates that function as electrodes by contacting the skin. As described above, therapists can use various types of currents according to the purpose.

[0003] Diathermy is a physical therapy that has been used for many years and is divided into two types: superficial thermotherapy and deep thermotherapy. Deep thermotherapy includes long-wave and short-wave diathermy, ultrasound, and contact radio frequency. Contact radio frequency is also called high-frequency current and has a frequency between 100 kHz and 1.2 MHz. This type of deep thermotherapy is called diathermy. Diathermy applies heat to the damaged site cell tissue between two electrodes in contact with biological tissue, thereby generating a current circulation.

[0004] As shown in Spanish Patent ES287964, the original diathermy device using current conduction respectively includes an active electrode and a ground electrode. Due to the impedance of the tissue itself, the current increases the temperature of the body tissue as the Joule effect during the process of circulating in the body tissue. At this time, the degree of heat generation increases, and the degree of heat generation is related to the increase in current intensity. The thermal conductivity of the body tissue increases due to high-frequency current. The higher the voltage of the current, the higher the thermal conductivity of the body tissue, and thus the faster the recovery. When there are multiple electrodes, only one high-frequency voltage generator is connected, so the diathermy treatment effect and tissue recovery are promoted simultaneously during the treatment process. These two effects occur simultaneously and are not separated.

[0005] US Patent US5773173 provides an interference stimulation treatment device for electrotherapy. The device includes two generators, and each generator generates an output signal with a specific frequency inside the device. At this time, the output signal passes through other components before passing through the mixer, and the mixer is equipped with a selection switch for selecting the 2-pole treatment / 4-pole treatment output mode to select the output signal. The device provides a single composite low-frequency signal to the electrode pair.

[0006] U.S. Patent US2010 / 0152817 provides a series / parallel electrode pair electrical nerve stimulation network simulator. The simulator continuously generates electrical stimulation and causes the signal to be continuously transmitted within a loop to the series electrode pair. Each electrode pair receives the signal in parallel rather than simultaneously, so the signal does not start and end simultaneously. By applying electrical stimulation differently, the simulator can be used to generate simulated stimuli with higher amplitudes or longer durations.

[0007] U.S. Patent US2003 / 0181960 provides a device that generates a treatment signal at an electrode through a first electrical signal and a second electrical signal and is absorbed by a ground electrode. The device is a low-frequency device and does not have diverse prescription therapies.

[0008] Therefore, there is a need for a treatment solution that is safer and more effective for patients and simpler and more optimized for therapists.

[0009] Other features and advantages of the present invention will be described in conjunction with the following description and drawings and may include other advantages.

[0010] Prior art documents

[0011] Patent documents

[0012] (Patent document 1) Spanish Invention Patent ES287964

[0013] (Patent document 2) U.S. Invention Patent US5773173

[0014] (Patent document 3) U.S. Invention Patent US2010 / 0152817

[0015] (Patent document 4) U.S. Invention Patent US2003 / 0181960 Summary of the invention

[0016] Technical problem

[0017] The present invention provides an electrotherapy device, which includes: N electrodes 212, 222, 240, where N = 2 or 3; two sine wave voltage generators 210, 220; a first series configuration, in which N = 2, the electrodes 212, 222 are active electrodes, and the two voltage generators are arranged in series, and the electrotherapy device does not include a ground electrode 240; a second parallel configuration, in which N = 3, two of the electrodes 212, 222 are active electrodes respectively connected to the voltage generators 210, 220, one electrode 240 is configured to form a ground electrode respectively connected to the grounds of the voltage generators 210, 220, and the two voltage generators are arranged in parallel; and a control device, which is configured to alternately adopt the first series configuration and the second parallel configuration.

[0018] Means for solving the problem

[0019] To achieve the above object, the electrotherapy device according to the embodiment includes N = 2 or 3 electrodes, preferably including two sine wave voltage generators for generating a first signal and a second signal respectively.

[0020] The electrotherapy device is characterized in that the two voltage generators are separated by transformers by including transformers for each voltage generator, and includes a control device that alternately adopts a first series configuration and a second parallel configuration.

[0021] Wherein, in the first series configuration, N = 2, the electrodes are active electrodes, the two voltage generators are arranged in series, each active electrode is equipped to be connected to each voltage generator, there is no ground electrode, and the current flows between the two closest active electrodes by changing the potential of each active electrode.

[0022] In the second parallel configuration, N = 3, two of which are active electrodes connected to the voltage generator, one electrode is a ground electrode for forming a ground connection respectively connected to the voltage generator, the two voltage generators are arranged in parallel, and the current flows between the two closest active electrodes or between each active electrode - ground electrode by configuring different potentials at each active electrode.

[0023] Each active electrode receives the first signal or the second signal of each generator by being connected to the voltage generator. Preferably, the first signal and the second signal are different from each other.

[0024] According to another aspect of the present invention, the present invention relates to an operation process of the electrotherapy device as described above, and the electrotherapy device includes the following first operation form and second operation form.

[0025] The first operation form of the present invention is that each of the two electrodes is connected in series to the voltage generator according to the first configuration (N = 2) of the device, and the current flows between the two active electrodes. The second operation form is that the two electrodes are respectively connected to the voltage generators connected in parallel with each other according to the second configuration (N = 3) of the device, and the remaining one electrode is a ground electrode, and the current flows between the closest active electrodes or between the active electrode and the ground electrode.

[0026] Advantages of the invention

[0027] The present invention can be used as a two - channel device for applying multiple electrical signals through electrodes on the user's body. That is, by arranging the voltage generators in series / parallel, a comprehensive electrotherapy covering diathermy and / or conductive therapy can be provided to the therapist.

[0028] In addition, since the two generators are insulated, users can also use them safely due to insulation in the circuit, and the current can be led out through the active electrodes to expand the treatment range or apply multiple treatments. Considering that it is usually preferred to reduce the current led out by the active electrodes by prioritizing the current between the active electrode and the ground electrode (neutral electrode), this is a rather new attempt. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a wiring diagram of the device according to the first configuration in the first embodiment of the present invention, and this configuration includes two active electrodes and two voltage generators.

[0030] Figure 2 showing the Figure 1 current flow between the electrodes in the device applicable to the human body.

[0031] Figure 3 is a wiring diagram of the device in the first embodiment of the present invention, which is a diagram showing a second configuration including two active electrodes, a ground electrode, and two voltage generators.

[0032] Figure 4 and Figure 5 showing the Figure 3 current flow between the electrodes in the device applicable to the human body.

[0033] Figure 4 showing the current flow between the two active electrodes during the generator synchronization process.

[0034] Figure 5 showing the current flow between the active electrode and the ground electrode between the two active electrodes during the generator asynchronous process.

[0035] Figure 6 is a wiring diagram of the device according to the second embodiment of the first configuration of the present invention, including two active electrodes that also serve as ground electrodes simultaneously, and two voltage generators.

[0036] Figure 7 showing the Figure 6 current flow in the device applicable to the human body.

[0037] (Description of Reference Numerals)

[0038] 10: User

[0039] 110: The current led out between the two active electrodes

[0040] 111: The current led out between the two active electrodes

[0041] 112: The current led out between the two active electrodes

[0042] 120: Derived current between the active electrode and the ground electrode

[0043] 121: Derived current between the active electrode and the ground electrode

[0044] 122: Derived current between the active electrode and the ground electrode

[0045] 210: Voltage generator 211: Transformer

[0046] 212: First voltage generator connected to the active electrode 213: Measuring unit

[0047] 214: Control module 220: Voltage generator

[0048] 221: Transformer

[0049] 222: Second voltage generator connected to the active electrode 223: Measuring unit

[0050] 224: Control module 230: Synchronization device

[0051] 240: Neutral electrode or ground electrode Detailed implementation mode

[0052] The objectives, features, and advantages of the present invention will become clearer through the detailed description of an embodiment in the following drawings.

[0053] Before detailing the embodiments of the present invention, the selectable features of the devices that can be used simultaneously or alternately are as follows.

[0054] According to one embodiment, each voltage generator of the present invention is equipped to generate a high-voltage current in the frequency range of 100 kHz to 10 MHz.

[0055] According to one embodiment, the active electrode is configured to be movable.

[0056] According to one embodiment, the active electrode is a capacitive electrode, a resistive electrode, or a multi-pole electrode.

[0057] According to one embodiment, each generator includes means for measuring output parameters.

[0058] According to one embodiment, each generator includes any one or more of an output current, frequency, and phase difference control module. The control module refers to a microcontroller, a microprocessor, a CPLD (Complex Programmable Logic Device), an FPGA (Field Programmable Gate Array), or an analog circuit.

[0059] According to one embodiment, the measuring unit transmits data to the control module. Preferably, the output of the generator can be controlled based on the impedance measurement value.

[0060] According to one embodiment, it includes a synchronization device 230 for controlling the synchronization or asynchronization of the generator in the electrotherapy device of the present invention.

[0061] According to one embodiment, an implementation of the present invention includes the steps of controlling the in-phase or out-of-phase of two generators through the control module, and controlling the synchronization or asynchronization of the two generators by using the signal output through the synchronization device to generate the current between two active electrodes.

[0062] According to one embodiment, no switch is arranged between the generator output unit and the active electrode in the device.

[0063] According to one embodiment, no mixer is arranged between the generator and the active electrode in the device.

[0064] The present invention is an electrotherapy device for providing diathermy or electroconductive therapy to a user's body.

[0065] According to one embodiment, the electrotherapy device of the present invention can provide diathermy or electroconductive therapy, or a treatment combining electroconductive therapy and diathermy.

[0066] According to one embodiment, the electrotherapy device of the present invention can perform different treatments by connecting generators in series or in parallel.

[0067] The electrotherapy device of the present invention includes a plurality of electrodes (2 to 3), and the number of electrodes is described as N (N = 2 or 3). The number of electrodes can be 2 or 3, or corresponding to an even or odd number.

[0068] The electrotherapy device of the present invention includes two sine wave voltage generators 210, 220. Preferably, the number of sine wave voltage generators 210, 220 is determined according to the number of electrodes, especially the number of active electrodes 212, 222. When the number of electrodes is even, the number of sine wave voltage generators is correspondingly determined.

[0069] The electrotherapy device of the present invention includes two channels, each channel originating from the voltage generators 210, 220. The active electrodes 212, 222 transmit current to the body of the user 10. Preferably, the active electrodes 212, 222 are each connected to a different channel. The active electrodes 212, 222 are respectively connected to the voltage generators.

[0070] The electrotherapy device of the present invention can be configured to include a ground electrode 240 or a neutral electrode, where the neutral electrode refers to an electrode that receives the current transmitted from the active electrodes 212, 222 and passing through a part of the body of the user 10. The ground electrode 240 closes the circuit of the user 10's body and forms a ground. This electrode is preferably in a fixed state, but has flexibility according to the type of treatment. Here, "fixed" means that the ground electrode does not move during the treatment, and at this time, the electrode can be fixed to the user's body through a fixing device. "Flexibility" means that the electrode can be moved during the treatment.

[0071] The electrodes 212, 222, 240 can be equipped to suit the body of the user 10. Preferably, the electrodes 212, 222, 240 are in contact with the body of the user 10.

[0072] The active electrodes 212, 222 can be capacitive, resistive or multi-pole. "Multi-pole" means that the active electrodes 212, 222 have both capacitive electrodes and resistive electrodes at the same time.

[0073] The active electrodes 212, 222 can be fixed or have flexibility according to the treatment.

[0074] The electrotherapy device of the present invention includes a control device, and the control device supports alternately adopting a first configuration and a second configuration. The control device is a microcontroller, a microprocessor, a CPLD (Complex Programmable Logic Device), an FPGA (Field Programmable Gate Array) or an analog circuit.

[0075] According to the first configuration, the electrotherapy device of the present invention includes N electrodes (N = 2), and both of the two electrodes are active electrodes 212, 222, and do not include a ground electrode 240. Each active electrode is connected to the voltage generators 210, 220 connected in parallel. This configuration is shown in Figure 1 and Figure 2 .

[0076] According to the second configuration, the electrotherapy device of the present invention includes N electrodes (N = 3), which are the active electrodes 212, 222 and the ground electrode 240. The active electrodes 212, 222 are respectively connected to the voltage generators 210, 220 arranged in parallel, and the ground electrode 240 is connected to the intersection point between the voltage generators. This configuration is shown in Figure 3 , Figure 4 and Figure 5 .

[0077] According to a preferred embodiment, the voltage generators 210, 220 can be separated, and at this time, galvanic isolation is performed. According to the embodiment in the attached drawings, transformers 211, 221 are arranged at the output units of each of the voltage generators 210, 220. By separating the generators, the user can be separated from the circuit of the electrotherapy device of the present invention, so the safety is improved.

[0078] The transformers 211, 221 are configured to be in a phase or de-phase state opposite to the output signals of the voltage generators 210, 220 when necessary.

[0079] The ground electrode 240 can be selected to be used in the device according to the present invention. The ground electrode 240 prevents or reduces the generation of the induced current circulating between the two active electrodes 212, 222.

[0080] Each of the active electrodes 212, 222 is connected to the sine wave voltage generators 210, 220 through separate channels. Preferably, the electrotherapy device of the present invention does not include a switch for transmitting the first signal of the voltage generator 210 or the second signal of the second voltage generator 220 to the active electrode, and does not include a mixer for combining the first signal of the first generator with the second signal of the second generator.

[0081] The signals generated by each generator are suitable for each active electrode.

[0082] The device of the present invention is configured to generate different electric potentials for each of the electrodes 212, 222 to support the current flow between the two closest electrodes among the electrodes 212, 222, 240.

[0083] According to the present invention, the ground electrode 240 is connected or not connected to the body of the user 10 according to the configuration of the neutral point or common point in the active electrodes 212, 222.

[0084] The device of the first configuration performs the steps of generating the line current 110 between the active electrodes 212, 222, and the second configuration generates the simple currents 120, 121 between the active electrodes 212, 222 and the ground electrode 240 attached to the body of the user 10.

[0085] According to the selected embodiment, the electrotherapy device of the present invention can be used for electrotherapy, especially diathermy. Thus, each of the voltage generators 210, 220 is arranged to generate a high voltage. The high-frequency voltage preferably has a value between 100 kHz and 10 MHz.

[0086] The electrotherapy device of the present invention may include measurement units 213 and 223 in each of the voltage generators 210 and 220. The measurement units 213 and 223 are configured to measure the output signal parameters of the separate generators 210 and 220. The measurement units 213 and 223 are configured to transmit control data to the control modules 214 and 224.

[0087] The control modules 214 and 224 control, for example, the frequency of the current and the dephasing of the voltage machine. For example, the control modules 214 and 224 refer to a microcontroller, a microprocessor, a CPLD (Complex Programmable Logic Device), an FPGA (Field Programmable Gate Array), or an analog circuit.

[0088] The electrotherapy device of the present invention may include a synchronization unit 230 arranged for controlling the voltage generators 210 and 220. The synchronization unit 230 is arranged in the synchronization introduction part of each of the voltage generators 210 and 220, and is configured to synchronize or asynchronize the transmitted signals. Among them, synchronization means that any one or more of the pulse, frequency, and time of the transmitted signal are the same. For example, the synchronization unit 230 controls the synchronization or asynchronization of the signal by generating a synchronization signal for each voltage generator. As Figure 4 、 Figure 5 shown, when the two voltage generators 210 and 220 are synchronized, the current circulates between each active electrode 212 and 222 and the neutral grounding electrode 240, but when the voltage generators 210 and 220 are asynchronous, it also circulates between the active electrodes 212 and 222, and the latter is the derived current 110. The synchronization unit 230 can generate and maintain the derived current between the two active electrodes by controlling the synchronization or asynchronization of the signal.

[0089] According to an aspect of the present invention, the voltage generators 210 and 220 of the electrotherapy device of the present invention are independent and can adjust the output signal according to the measured impedance. The electrotherapy device of the present invention may be configured as a multi-output device, which means that it may include two active electrodes, and the active electrodes are respectively connected to two voltage generators that generate different output signals.

[0090] Preferably, the signal transmitted by each of the voltage generators 210 and 220 is a sine wave. Preferably, V = Vamp×sin(wt + Φ), and Vamp = the amplitude of the sine wave signal, w = each frequency, Φ: phase angle.

[0091] According to another aspect of the present invention, the electrotherapy device of the present invention can be configured to phase or de-phase the signals from each of the voltage generators 210, 220. Thereby, the output voltage varies according to the generation of the wavelength phase difference. When the signals of the voltage generators 210, 220 are in the in-phase state, the voltage between the active electrodes 212, 222 is twice the output voltage Vout (V110 = 2×Vout) of the output voltage (Vout: the output voltage of the voltage generator). When the signals of the voltage generators 210, 220 are phase-shifted by 180°, the output voltage is zero (null), and Vamp = 0V (Vamp: the amplitude of the output sine wave signal).

[0092] The first configuration of the first embodiment of the electrotherapy device of the present invention is shown in Figure 1 .

[0093] According to the first configuration of the first embodiment of the present invention, N = 2, which means that the active electrodes 212, 222 are respectively connected to each of the voltage generators 210, 220. In the first configuration, the electrotherapy device of the present invention does not include a ground electrode. In this configuration, the voltage generators 210, 220 are arranged in series.

[0094] The voltage generators 210, 220 are separated by transformers 211, 221 provided in the output units of each of the voltage generators 210, 220.

[0095] When the output signal is in the in-phase or de-phase state or when necessary, the transformers 211, 221 can be configured in the in-phase or de-phase state.

[0096] According to the first embodiment, the electrotherapy device of the present invention includes measurement units 213, 223 respectively arranged in the output units of the voltage generators 210, 220. Each measurement unit 213, 223 is connected to the voltage generator 210 and the control modules 214, 224 corresponding to the voltage generators 210, 220.

[0097] In the above embodiment according to the first configuration, the current flowing in the absence of the ground electrode 240 is the derived current 110 between the active electrodes 212, 222 applicable to the body of the user 10, as Figure 3 shown.

[0098] The signal of the first configuration is an inter-line signal, V110 = V120 + V121. V110 is the voltage of the current 110 circulating between the active electrodes 212, 222, V120 is the voltage of the current 120 circulating between the active electrode 212 and the non-existent ground electrode 240, and V121 is the voltage of the current 121 circulating between the active electrode 222 and the non-existent ground electrode 240.

[0099] In the first configuration, the nominal value of the voltage can be increased to twice by serially separating voltage generators 210 and 220, whereby the absorption rate of hard biological tissues (bones, ligaments, etc.) can be increased, thus achieving a dielectric breakdown effect that can induce current flow in the tissue.

[0100] Diathermy treatment can be performed through the first configuration. Through the above configuration, voltage generators 210 and 220 can be configured in series and generate a diathermy generation signal. The above treatment is performed through two active electrodes and a ground electrode, and the ground electrode is a floating electrode that does not directly contact the user's body. The above configuration only increases the voltage without increasing the intensity. The current increases the conductivity of the biological tissue to the maximum while minimizing heat generation. The goal is to promote the cell metabolism of the tissue through a voltage of up to 800 Vrms.

[0101] In the above first configuration, voltage generators 210 and 220 can be configured to be out of phase due to the synchronization of the output signals.

[0102] According to an embodiment of the present invention, the Figure 3 shown second configuration can be alternatively applied to the device.

[0103] According to the second configuration of the present invention, N = 3, which includes active electrodes 212 and 222 respectively connected to voltage generators 210 and 220. In the second configuration, the device further includes a ground electrode 240, which is connected to the common part between voltage generators 210 and 220. In the second configuration, voltage generators 210 and 220 are arranged in parallel.

[0104] According to the second configuration including the above ground electrode 240, current flows between active electrodes 212 and 222 and the ground electrode 240, and also circulates between active electrodes 212 and 222, as Figure 4 shown.

[0105] In the second configuration, the signals of currents 120 and 121 are simple. Voltage generators 210 and 220 each establish different impedances. As active electrodes 212 and 222 are applied to the user 10's body, there is an impedance between active electrodes 212 and 222, whereby a voltage V110 is generated between active electrodes 212 and 222. V110 varies according to the distance between active electrodes 212 and 222 and whether the signals are out of phase as described above.

[0106] In the second configuration, the nominal value of the voltage can be increased to twice by arranging voltage generators 210 and 220 in parallel, whereby it is possible to heat the penetrated tissue. This is called diathermy behavior in another term. The power changes according to whether active electrodes 212 and 222 are close to or far from each other.

[0107] Diathermy treatment and combined conductance treatment can be achieved through the second configuration. With the above configuration, the diathermy and conductance generation signals are applied by arranging the voltage generators 210 and 220 in parallel. In the second configuration, the ground electrode 240 is arranged on the body of the user 10 to generate three current segments distributed among the three electrodes. The sum of the current segments 110, 120, and 121 corresponds to the power of the electrotherapy device. The second configuration also enables the intensity to be increased up to 4 amperes without increasing the voltage, thereby promoting the generation of heat for penetrating biological tissues (diathermy treatment).

[0108] Figure 4 and Figure 5 The active electrodes 212 and 222 in [description] transmit sinusoidal currents that can have different frequencies and characteristics. The electric segments through which the currents 120 and 121 flow in the two active electrodes converge to the ground electrode 240. At this time, according to the setting of the ground electrode 240, a third electric segment through which the current 110 flows can be generated. The present invention can distribute the power transmitted by the two-phase device through the three electric segments of the three electrodes 212, 222, and 240 on the body of the user 10. The electric segments are located between each of the electrodes 212, 222, and 240, and the therapist can decide how to distribute the power. The device can be configured to be synchronized / asynchronous through the dephasing of the signals.

[0109] Figure 4 A phased or dephased synchronization signal is shown, and there is no induced current.

[0110] Figure 5 A phased or dephased asynchronous signal is shown, and there is one induced current.

[0111] In In the second embodiment of the first configuration, there are two active electrodes (N = 2) and they are respectively connected to the voltage generators 210 and 220. In the second embodiment, the device does not include a ground electrode. In the first configuration, the voltage generators 210 and 220 are arranged in series.

[0112] As Figure 6 , Figure 6 Figure 7 shown, the active electrodes 2l2 and 222 are equipped and made to be active / neutral simultaneously or alternately so that the current flows in the input unit and the output unit of one of the active electrodes.

[0113] There is also an embodiment with intelligent active electrodes. At this time, the device has an inertial system that can report the actions of the therapist in real time. The therapist can modify the treatment method to use the device more effectively. The inertial system can also detect the type of electrode used. At this time, the control modules 214 and 224 can adjust the output according to the detected electrode type. <9000261>

[0114] For example, the device can be applicable to a maximum simple voltage of 400 Vrms, a maximum simple current of 1.2 Arms, a power of 150 W for frequencies in the range of 300 kHz to 1 MHz, a maximum simple voltage of 800 Vrms, a maximum simple current of 2.4 Arms, and a power of 300 W for frequencies in the range of 300 kHz to 1 MHz.

[0115] Therefore, with the present invention, it is possible to advantageously vary the voltage and intensity of high-frequency currents, utilize different intensities and frequencies, and selectively combine electrodes that are different from each other.

[0116] As described in the present invention, the voltage generators 210, 220 can generate multi-frequency voltages through low-frequency, medium-frequency, and high-frequency signal modulation. The amplitude of the voltage generator with the highest frequency is modulated by the voltage generator with the lowest frequency. Each generator should provide the power corresponding to that electrode and the associated electrode, and the power is adjusted according to the amplitude and dephasing of the generator.

[0117] According to this possibility, the electrotherapy device includes a voltage generator 1 and a voltage generator. The voltage generator 1 is configured to generate a first voltage having a first frequency and includes a first terminal, a first output terminal, and a second output terminal. The voltage generator is configured to generate a second voltage having a second frequency (greater than the first frequency) and includes a third terminal, a third output terminal, and a fourth output terminal. At this time, the device is characterized by including a transmission channel and a reception channel, and the first terminal and the third terminal are connected to the transmission channel, and the second terminal and the fourth terminal are connected to the reception channel.

[0118] Thus, two voltages with two different frequencies can be used for a single transmission channel and a reception channel. Among them, in particular, the electrotherapy device can control the first voltage generator to generate a first voltage with a first frequency and cause the second voltage generator to generate a second voltage with a second frequency.

[0119] Preferably, the control device is configured to generate a signal associated with a sinusoidal voltage of the first frequency and a sinusoidal voltage of the second frequency. The first frequency is modulated to a third frequency in the transmission channel, and the second frequency is modulated to a fourth frequency in the transmission channel. At this time, the signal is the sum of the voltage of the first generator and the voltage of the second generator.

[0120] On the other hand, the operation of the electrotherapy device is as follows:

[0121] a. Generate a first voltage with a first frequency through the first generator;

[0122] b. Generate a second voltage with a second frequency (greater than the first frequency) through the second generator. At this time, a. and b. occur simultaneously, and the two generators operate simultaneously.

[0123] According to one embodiment, the first voltage generator is configured to generate a sinusoidal voltage.

[0124] According to one embodiment, the first frequency belongs to a first frequency band between 1 kHz and 10 kHz.

[0125] According to one embodiment, the first voltage generator is configured to generate a sinusoidal voltage at a first frequency, and the first frequency is modulated to a third frequency.

[0126] According to one embodiment, the third frequency belongs to a third frequency band between 1 Hz and 150 Hz.

[0127] According to one embodiment, the third frequency is a sinusoidal voltage.

[0128] In the above embodiment, the device modulates a low-frequency signal (electrical stimulation) by generating an intermediate-frequency sinusoidal signal and combines it with a high-frequency sinusoidal signal (diathermy). Accordingly, the device promotes the body's natural healing mechanism and generates a non-invasive current that activates cell metabolism by combining the advantages of electrical stimulation and diathermy radio frequencies in the same channel. The above method shows significant effects on rehabilitation by quickly restoring muscle and joint functions.

[0129] As a result, a sinusoidal current of 1 kHz to 10 kHz modulated to a frequency of 1 Hz to 150 Hz is generated. By modulating the stimulation current, muscle twitching (Tetany) excited during electrical stimulation can be prevented.

[0130] According to one embodiment, the second voltage generator is provided to generate a sinusoidal voltage.

[0131] According to one embodiment, the second frequency belongs to a second frequency band between 100 kHz and 10 MHz.

[0132] According to one embodiment, the second voltage generator is provided to generate a sinusoidal voltage at a second frequency, and the second frequency is modulated to a fourth frequency.

[0133] According to one embodiment, the fourth frequency belongs to a fourth frequency band between 1 Hz and 150 Hz.

[0134] According to one embodiment, the fourth frequency generates pulses.

[0135] According to one embodiment, the second voltage generator includes an activation control device configured to generate a sinusoidal voltage for electrical stimulation at the fourth frequency.

[0136] According to one embodiment, the first voltage generator includes a transmission control device configured to transmit a voltage at the fourth frequency from the first voltage generation module.

[0137] The embodiments of the present invention are not limited to the description as above and can be expanded according to conditions.

Claims

1. An electrotherapy device, comprising: N electrodes 212, 222, 240, where N = 2 or 3; And Two or more sine wave voltage generators 210, 220, Wherein, the device includes a plurality of transformers 211, 221 that separate each voltage generator 210, 220, and the voltage generators 210, 220 are separated by each transformer 211, 221, And it includes a first series configuration, a second parallel configuration, and a control device, Wherein, in the first series configuration, N = 2, the electrodes 212, 222 are active electrodes, the plurality of voltage generators 210, 220 are arranged in series, the ground electrode 240 is not included, each active electrode 212, 222 is configured to be connected to each voltage generator 210, 220, and by changing the different electric potentials generated by each active electrode 212, 222, current is transmitted between the two closest active electrodes 212, 222, In the second parallel configuration, N = 3, two of the electrodes 212, 222 are active electrodes respectively connected to the voltage generators 210, 220, one electrode 240 is configured to be a ground electrode for forming a ground connection respectively connected to the voltage generators 210, 220, the plurality of voltage generators 210, 220 are arranged in parallel, configured to generate different electric potentials at each active electrode 212, 222, and to transmit current between any one or more of the closest active electrodes and between each active electrode 212, 222 and the ground electrode 240, The control device is configured to alternately adopt the first series configuration and the second parallel configuration.

2. The electrotherapy device according to claim 1, wherein, The voltage generators 210, 220 generate high-frequency voltages between 100 kHz and 10 MHz.

3. The electrotherapy device according to claim 1 or 2, wherein, Each of the active electrodes 212, 222 receives a first signal or a second signal generated by each voltage generator 210, 220 by being connected to each voltage generator 210, 220, and the first signal is different from the second signal.

4. The electrotherapy device according to claim 1, wherein, The active electrodes 212, 222 are movably configured.

5. The electrotherapy device according to claim 1, wherein, The active electrodes 212, 222 are capacitive electrodes, resistive electrodes or multi-polar electrodes.

6. The electrotherapy device according to claim 1, wherein, The voltage generators 210, 220 further include measurement units 213, 223 that measure the output parameters of the voltage generators 210, 220.

7. The electrotherapy device according to claim 6, which further includes, Control modules 214, 224, which are configured to control any one or more of the output current, frequency, and phase difference generation of the voltage generators 210, 220.

8. The electrotherapy device according to claim 7, wherein, The measurement units 213, 223 communicate with the control modules 214, 224 to provide data required for controlling the control modules 214, 224.

9. The electrotherapy device according to claim 1, further comprising: A synchronization device 230 configured to control the synchronization or asynchronization of the voltage generators 210, 220.

10. The electrotherapy device according to claim 1, wherein In the first series configuration, the signals transmitted by the voltage generators are out-of-phase signals, synchronization signals.

11. The electrotherapy device according to claim 1, comprising: A first voltage generator 210 that generates a first voltage having a first frequency and is configured to include a first terminal and a second terminal; A second voltage generator 220 that generates a second voltage having a second frequency (greater than the first frequency) and is configured to include a third terminal and a fourth terminal; A transmission channel; And A receiving channel, wherein the first terminal and the third terminal are connected to the transmission channel, and the second terminal and the fourth terminal are connected to the receiving channel, and it includes a control device that controls the first voltage generator 210 to generate a first voltage of the first frequency and causes the second voltage generator 220 to generate a second voltage of the second frequency, The control device is configured to generate a signal associated with the sine wave voltage of the first frequency and the sine wave voltage of the second frequency, the first frequency is modulated to a third frequency in the transmission channel, the second frequency is modulated to a fourth frequency in the transmission channel, and the signal associated with the sine wave voltage of the first frequency and the sine wave voltage of the second frequency is the sum of the voltage of the first generator and the voltage of the second generator.

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