Series-parallel two-channel high-frequency electrotherapy device

Abstract

To provide an electrotherapy device.SOLUTION: The electrotherapy device includes N electrodes (212, 222) with N equal to 2 or 3, and two or more sine-wave voltage generators (210, 220), the two or more voltage generators being separated by transformers (211, 221). The device comprises: a first series configuration in which N=2, electrodes (212, 222) are active electrodes, and two voltage generators are arranged in series, the device not including a ground electrode; a second parallel configuration in which N=3, two electrodes (212, 220) are active electrodes respectively connected to voltage generators (210, 220), one electrode is provided as a ground-forming ground electrode respectively connected to the voltage generators (210, 220), and the two or more voltage generators are arranged in parallel; and a control device configured to alternately take the first series configuration and the second parallel configuration.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a high frequency electrotherapy device for therapeutic or cosmetic purposes, and is particularly applicable to the field of electrotherapy for diathermy or conduction therapy. [Background technology]

[0002] Electrotherapy is a safe, non-invasive technique that uses electricity for therapeutic purposes. This technique can be effective in relieving pain, strengthening muscle fibers, or accelerating the healing of living tissue. There are three main frequencies used in electrotherapy: low frequency (1Hz-150Hz) for superficial nerve stimulation, mid frequency (1kHz-100kHz) for deep nerve stimulation, and high frequency (100kHz-1.2MHz) for selective superficial or deep diathermy and promoting healing. Low frequency (LF) and mid frequency (MF) are commonly referred to as electrical stimulation, while high frequency (HF) is referred to as radiofrequency. These various types of electrotherapeutic currents circulate between two conductive elements or plates that act as electrodes in contact with the skin. Thus, therapists can use a variety of currents depending on their purpose.

[0003] Diathermy has been used as a form of physical therapy for several years and is divided into two types: superficial hyperthermia and deep hyperthermia. Deep hyperthermia methods include long-wave and short-wave diathermia, ultrasound, and contact radiofrequency. Contact radiofrequency, also known as radiofrequency current, has a frequency between 100 kHz and 1.2 MHz. These types of deep hyperthermia methods are called diathermia. Diathermia applies heat to the tissue at the injury site between two electrodes in contact with the tissue, causing a current to circulate.

[0004] As specified in Spanish Patent ES287964, a diathermic therapy device that utilizes electric current conduction originally includes one active electrode and one ground electrode. Current circulates within the tissue due to the tissue's own impedance, raising the tissue temperature through the Joule effect. This increases the level of heat generation, which is related to the current strength. The thermal conductivity of tissue increases with high-frequency current. The higher the current voltage, the higher the thermal conductivity of the tissue, resulting in faster recovery. When multiple electrodes are connected to a single high-frequency voltage generator, the diathermic therapy effect and tissue recovery are simultaneously promoted during treatment. These two effects occur simultaneously and are not separate.

[0005] US Patent US5773173 discloses an interferential stimulation treatment device for electrical therapy. The device includes two generators, each of which generates an output signal with a specific frequency. The output signal passes through other elements before passing through a mixer, and the mixer is equipped with a selection switch that allows the output signal to be selected between bipolar and quadripolar treatment. The device provides a single composite low-frequency signal to the electrode pair.

[0006] US Patent US2010 / 0152817 presents a series / parallel electrode pair electrical nerve stimulation network simulator. The simulator continuously generates electrical stimuli so that signals are transmitted continuously to the series electrode pairs in a cycle. Each electrode pair receives the corresponding signal in parallel, not simultaneously, so the signals do not start and end simultaneously. By applying electrical stimuli in various ways, the simulator can generate simulated stimuli with higher amplitudes or longer durations.

[0007] US Patent US2003 / 0181960 proposes a device that generates a therapeutic signal through an electrode using a first electrical signal and a second electrical signal, and absorbs it through a ground electrode. The device is a low-frequency device, and does not have a wide range of prescription treatments.

[0008] This calls for safer, more effective treatment solutions for patients, and easier, more optimized treatment solutions for therapists.

[0009] Other features and advantages of the present invention will be discussed in conjunction with the following description and drawings, and other advantages may also be included. [Prior art documents] [Patent documents]

[0010] Spanish Patent ES287964 US Patent US5773173 US Patent US2010 / 0152817 US Patent US2003 / 0181960 Summary of the Invention [Problem to be solved by the invention]

[0011] The present invention provides an electrotherapy device including N electrodes (212, 222, 240), where N=2 or 3, and two sinusoidal voltage generators (210, 220), the two voltage generators being separated by a transformer (211, 221), the device including a control device configured to alternately adopt a first series configuration in which N=2, the electrodes (212, 222) are active electrodes, and the two voltage generators are arranged in series, the first series configuration not including a ground electrode (240); and a second parallel configuration in which N=3, the two electrodes (212, 222) are active electrodes connected to the voltage generators (210, 220), one electrode (240) is a ground electrode connected to the voltage generators (210, 220), and the two voltage generators are arranged in parallel, the control device being configured to alternately adopt a first series configuration and a second parallel configuration in which N=3, the two electrodes (212, 222) are active electrodes connected to the voltage generators (210, 220), one electrode (240) is a ground electrode connected to the voltage generators (210, 220), the two voltage generators being arranged in parallel.

[0012] [Means for solving the problem]

[0013] To achieve this object, an electrotherapy device devised according to an embodiment N=2 or 3 electrodes, preferably including two sinusoidal voltage generators intended to generate the first and second signals, respectively.

[0014] The electrotherapy device includes a transformer for each voltage generator, and the two voltage generators are separated by the transformer; a first series configuration in which N=2, the electrodes are active electrodes, two voltage generators are arranged in series, each active electrode is coupled to a respective voltage generator, and no ground electrode is included, and the potentials of each active electrode are different to allow current flow between the two closest active electrodes; a second parallel configuration where N=3, two of which are active electrodes coupled to voltage generators and one electrode is a ground electrode coupled to each voltage generator, the two voltage generators being arranged in parallel and configured to generate different potentials at each active electrode, allowing current flow between the two nearest active electrodes or between each active electrode and the ground electrode; and a control device configured to alternate between the first series configuration and the second parallel configuration.

[0015] Each active electrode is coupled to a voltage generator to receive either a first signal or a second signal from the respective generator, and preferably the first and second signals are different from each other.

[0016] According to another aspect of the present invention, the present invention relates to an operating process of the electrotherapy device as described above, including a first operating mode and a second operating mode as described below.

[0017] The first operating mode of the present invention is a mode in which two electrodes are each connected in series to a voltage generator by a first configuration of the device (N=2), and current flows between the two active electrodes. The second operating mode includes a mode in which two electrodes are each connected in parallel to a voltage generator by a second configuration of the device (N=3), and the remaining electrode is a ground electrode, and current flows between the closest active electrodes or between the active electrode and the ground electrode. [Effects of the Invention]

[0018] The present invention can function as a two-channel device that applies multiple electrical signals through electrodes on the user's body, i.e., by placing voltage generators in series / parallel to the therapist, it can provide integrated electrical therapy combined with diathermy and / or conductive therapy.

[0019] In addition, since the two generators are isolated, the user is also isolated from the electrical circuit, making it safe to use, and the current from the active electrode can be used to expand the treatment range or apply multiple treatments. This is a very new approach considering that in most cases, the current between the active electrode and the ground electrode (neutral electrode) tends to be prioritized, reducing the current from the active electrode. [Brief explanation of the drawings]

[0020] [Figure 1] FIG. 1 is a wiring diagram of a device according to a first configuration of a first embodiment of the present invention, which configuration consists of two active electrodes and two voltage generators. [Figure 2] FIG. 2 shows the current flow between the electrodes of the device of FIG. 1 applied to the human body. [Figure 3] FIG. 3 is a wiring diagram of a device in a first embodiment of the present invention, which shows a second configuration including two active electrodes, one ground electrode, and two voltage generators. [Figure 4] FIG. 4 shows the current flow between the electrodes in the device used on the human body according to FIG. 3, and shows the current flow between the two active electrodes of the generator synchronization. [Figure 5] FIG. 5 shows the current flow between the electrodes in the device used on the human body according to FIG. 3, showing the current flow between the two active electrodes and between the active electrode and the ground electrode when the generators are desynchronized. [Figure 6] FIG. 6 is a wiring diagram of a device according to a second embodiment of the first configuration of the present invention, which includes two active electrodes that also serve as ground electrodes and two voltage generators. [Figure 7] FIG. 7 shows the current flow in the device used on the human body according to FIG. DETAILED DESCRIPTION OF THE INVENTION

[0021] The objects, features and advantages of the present invention will become more apparent from the following detailed description of one embodiment illustrated in the accompanying drawings.

[0022] Before examining the embodiments of the present invention in detail, optional features of the device that can be used simultaneously or alternately are as follows:

[0023] According to one embodiment, each voltage generator of the present invention is provided for generating high voltage current in the frequency range of 100 kHz-10 MHz.

[0024] According to one embodiment, the active electrode is configured to be movable.

[0025] According to one embodiment, the active electrodes are capacitive, resistive, or multipolar.

[0026] According to one embodiment, each generator includes a device for measuring output parameters.

[0027] According to one embodiment, each generator includes one or more of an output current, frequency, and phase difference control module, which may be a microcontroller, a microprocessor, a CPLD (Complex Programmable Logic Device), an FPGA (Field Programmable Gate Array), or an analog circuit.

[0028] According to one embodiment, the measurement unit transmits data to a control module, which preferably controls the output of the generator depending on the impedance measurements.

[0029] According to one embodiment, the present invention includes a synchronization device (230) for use in controlling the synchronization or desynchronization of the generators in the anterior chamber therapy device.

[0030] According to one embodiment, an embodiment of the present invention includes a step of controlling the phasing or dephasing of two generators through a control module, and a step of controlling the synchronization or desynchronization of the two generators by a signal output through a synchronization device for generating a current between the two active electrodes.

[0031] According to one embodiment, no switch is located in the device between the generator output and the active electrode.

[0032] According to one embodiment, no mixer is placed between the generator and the active electrode in the device.

[0033] The present invention is an electrotherapy device that provides diathermic or conductive therapy to a user's body.

[0034] According to one embodiment, the electrothermal device of the present invention can provide diathermic or conductive therapy, or can combine diathermic therapy with conductive therapy.

[0035] According to one embodiment, the electrotherapy device of the present invention can deliver different therapies through serialization or parallelization of generators.

[0036] The electrotherapy device of the present invention includes a number of electrodes (2-3), where the number of electrodes is referred to as N (N=2 or 3). The number of electrodes can be 2 or 3 or an even or odd number.

[0037] The electrotherapy device of the present invention includes two sinusoidal voltage generators (210, 220). Preferably, the number of sinusoidal voltage generators (210, 220) is determined by the number of electrodes, particularly the number of active electrodes (212, 222). If the number of electrodes is even, the number of sinusoidal voltage generators is determined accordingly.

[0038] The electrotherapy device of the present invention includes two channels, each derived from a voltage generator (210, 220). Active electrodes (212, 222) deliver electrical current to the body of the user (10). Preferably, the active electrodes (212, 222) are each coupled to a different channel. The active electrodes (212, 222) are each connected to a voltage generator.

[0039] The electrotherapy device of the present invention may 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 passed through a portion of the user's (10) body. The ground electrode (240) closes the electrical circuit in the user's (10) body and forms a ground. The electrode is preferably fixed, but may be flexible depending on the type of treatment. Fixed here means that the ground electrode does not move during treatment, and the electrode can be fixed to the user's body via a support device. Flexible means that the electrode can move during treatment.

[0040] The electrodes (212, 222, 240) can be provided to be applied to the body of the user (10). Preferably, the electrodes (212, 222, 240) are in contact with the body of the user (10).

[0041] The active electrodes (212, 222) can be capacitive, resistive, or multipolar, meaning that the active electrodes (212, 222) are both capacitive and resistive.

[0042] The active electrodes (212, 222) may be fixed or floating depending on the treatment.

[0043] The electrotherapy device of the present invention includes a controller that allows the device to alternately adopt the first and second configurations, the controller being a microcontroller, microprocessor, CPLD (Complex Programmable Logic Device), FPGA (Field Programmable Gate Array) or analog circuitry.

[0044] According to a first configuration, the electrotherapy device of the present invention includes N electrodes (N=2), two of which are active electrodes (212, 222) and no ground electrode (240). Each active electrode is connected to a parallel-connected voltage generator (210, 220). This configuration is illustrated in Figures 1 and 2.

[0045] According to a second configuration, the electrotherapy device of the present invention includes N electrodes (N=3), which are active electrodes (212, 222) and a ground electrode (240). The active electrodes (212, 222) are respectively connected to parallel-arranged voltage generators (210, 220), and the ground electrode (240) is connected to the cross point between the voltage generators. This configuration is illustrated in Figures 3, 4, and 5.

[0046] In a preferred embodiment, the voltage generators (210, 220) can be separated, providing galvanic isolation. A transformer (211, 221) is located at the output of each voltage generator (210, 220) according to the illustrated embodiment. Separating the generators increases safety by isolating the user from the electrical circuits of the electrotherapy device of the present invention.

[0047] The transformers (211, 222) are provided to phase or dephasing in a direction opposite to the phasing or dephasing state of the voltage generator (210, 220) output signal when necessary.

[0048] The present invention provides the option of using a ground electrode (240) within the device, which prevents or reduces the generation of circulating electrical currents between the two active electrodes (212, 222).

[0049] Each active electrode (212, 222) is connected to a sinusoidal voltage generator (210, 220) using a separate channel. Preferably, the electrotherapy device of the present invention does not include a switch for transmitting the first signal from the voltage generator (210) or the second signal from the second voltage generator (220) to the active electrodes, and does not include a mixer section for combining the first signal from the first generator and the second signal from the second generator.

[0050] The signal produced by each generator is applied to one of the active electrodes.

[0051] The device of the present invention is configured to generate different electrical potentials at each of the electrodes (212, 222, 240) due to the flow of current between the two nearest ones of the electrodes (212, 222, 240).

[0052] According to the present invention, a neutral or common point configuration within the active electrodes (212, 222) may or may not be coupled to a ground electrode (240) on the user's (10) body.

[0053] The device implementation in the first configuration generates a line current (110) between the active electrodes (212, 222), and the second configuration generates a simple current (120, 121) between the active electrodes (212, 222) and a ground electrode (240) attached to the user's (10) body.

[0054] According to a preferred embodiment, the electrotherapy device of the present invention can be used for electrotherapy, in particular diathermic therapy, whereby the voltage generators (210, 220) are each arranged to generate high voltage, the high frequency voltage having a value preferentially between 100 kHz and 10 MHz.

[0055] The electrotherapy device of the present invention may include a measuring unit (213, 223) for each voltage generator (210, 220). The measuring units (213, 223) are provided for measuring output signal parameters of the separated generators (210, 220). The measuring units (213, 223) are provided for transmitting control data to the control modules (214, 224).

[0056] The control modules (214, 224) may, for example, control the frequency of the current and the dephasing of the voltage generator, and may, for example, be a microcontroller, a microprocessor, a Complex Programmable Logic Device (CPLD), a Field Programmable Gate Array (FPGA), or an analog circuit.

[0057] The electrotherapy device of the present invention may include a synchronization unit (230) arranged for controlling the voltage generators (210, 220). The synchronization unit (230) is arranged in the synchronization input of each voltage generator (210, 220) and is provided for synchronizing or desynchronizing the transmission signals. Here, synchronization means that at least one of the pulse, frequency, and period of the transmission signals is the same. For example, the synchronization unit (230) generates a synchronization signal for each voltage generator to control the synchronization or desynchronization of the signals. As shown in Figures 4 and 5, when the two voltage generators (210, 220) are synchronized, a current circulates between each active electrode (212, 222) and the neutral ground electrode (240). When the voltage generators (210, 220) are desynchronized, a current also circulates between the active electrodes (212, 222), and in the latter case, the current is derived. The synchronization unit (230) can control the synchronization or desynchronization of the signals to generate and maintain a derived current between the two active electrodes.

[0058] According to one aspect of the present invention, the voltage generators (210, 220) of the electrotherapy device of the present invention are independent and can adjust the output signal depending on the measured impedance. The electrotherapy device of the present invention is provided as a multi-output device, which means that it can include two active electrodes each connected to two voltage generators that generate different output signals.

[0059] Preferably, the signal transmitted by each of the voltage generators (210, 220) is sinusoidal. Preferentially, V=Vamp*sin(wt+Φ), where Vamp=amplitude of the sinusoidal signal, w=angular frequency, and Φ=phase angle.

[0060] According to another aspect of the present invention, the electrotherapy device of the present invention is configured so that the signals of the voltage generators (210, 220) can be phased or dephased. This allows the output voltage to vary depending on the wavelength phase difference. When the signals of the voltage generators (210, 220) are phased, the voltage between the active electrodes (212, 222) is twice the output voltage Vout (Vout = 2 × Vout) (Vout: voltage generator output voltage). When the signals of the voltage generators (210, 220) are dephased by 180°, the output voltage is null, Vamp = 0 V (Vamp: amplitude of the output sinusoidal signal).

[0061] A first configuration of a first embodiment of an electrotherapy device of the present invention is illustrated in FIG.

[0062] According to a first configuration of the first embodiment of the present invention, N=2, which means that each voltage generator (210, 220) is connected to an active electrode (212, 222). In this 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.

[0063] The voltage generators (210, 220) are separated through transformers (211, 222) located at the outputs of the voltage generators (210, 220) respectively.

[0064] The transformers (211, 222) are provided so that the output signals are phased or dephased, or inversely phased or dephased as required.

[0065] According to a first embodiment, the electrotherapy device of the present invention includes measuring units (213, 223) arranged at the outputs of the voltage generators (210, 220), respectively, which are connected to the voltage generators (210) and the control modules (214, 224) corresponding to the voltage generators (210, 220), respectively.

[0066] In the first embodiment, the current that flows in the absence of a ground electrode (240) is the current (110) that flows between the active electrodes (212, 222) applied to the body of the user (10) as shown in FIG.

[0067] The first configuration signal is a line-to-line signal, V110 = V120 + V121, where 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 absent ground electrode (240), and V121 is the voltage of the current (121) circulating between the active electrode (222) and the absent ground electrode (240).

[0068] In a first configuration, the separated voltage generators (210, 220) can be serially connected to increase the nominal voltage by up to twice the normal value, which increases the absorption rate of the biological tissue (bone, ligament, etc.) and creates a dielectric breakdown effect that induces current flow within the tissue.

[0069] The first configuration allows for serial diathermic treatment. This configuration allows voltage generators (210, 220) to be serially configured to generate diathermic signals. The treatment is performed through two active electrodes and a floating ground electrode that does not directly contact the user's body. This configuration increases only the voltage, not the intensity, but the current maximizes the conductivity of biological tissue, accelerating wound healing while minimizing heat generation. The goal is to promote cellular metabolism in the tissue with a voltage of up to 800Vrms.

[0070] In the first configuration, the voltage generators (210, 220) are arranged so that their output signals are synchronized and dephased.

[0071] According to one embodiment of the present invention, the second configuration shown in FIG. 3 can be applied to the device alternatively.

[0072] According to a second configuration of the present invention, N=3, which includes active electrodes (212, 222) each coupled to a voltage generator (210, 220). In the second configuration, the device also includes a ground electrode (240), which is coupled to the common point between the voltage generators (210, 220). In the second configuration, the voltage generators (210, 220) are arranged in parallel.

[0073] The second structure, including the ground electrode (240), allows current to flow between the active electrodes (212, 222) and the ground electrode (240), but also circulates between the active electrodes (212, 222) as shown in FIG.

[0074] In the second configuration, the current (120, 121) signals are simple. The voltage generators (210, 220) each establish a different impedance. When the active electrodes (212, 222) are applied to the body of the user (10), an impedance is created between the active electrodes (212, 222), and a voltage (V110) is generated between the active electrodes (212, 222). V110 varies depending on the distance between the active electrodes (212, 222) and whether or not the signals are dephasing as described above.

[0075] In the second configuration, the nominal voltage can be increased by up to twice by arranging the voltage generators (210, 220) in parallel, thereby generating heat in the permeated tissue. This is also known as "diathermy." The power can be varied by moving the active electrodes (212, 222) closer or farther apart.

[0076] The second configuration allows for diathermic and mixed conduction therapy. This configuration allows for the application of diathermic and conduction-generating signals by arranging voltage generators (210, 220) in parallel. In the second configuration, a ground electrode (240) is positioned on the user's (10) body to generate three current segments distributed among the three electrodes. The sum of the current segments (110, 120, 121) corresponds to the electrical power of the electrotherapy device. The second configuration also increases the intensity, not the voltage, up to a maximum of 4 amperes, facilitating the generation of heat (diathermic therapy) through the tissue.

[0077] The active electrodes (212, 222) in Figures 4 and 5 transmit sinusoidal currents that can vary in frequency and characteristics. The two active electrodes converge to the ground electrode (240) through electrical segments carrying currents (120, 121), and the setting of the ground electrode (240) can generate a third electrical segment carrying current (110). The present invention distributes power transmitted from a biphasic device through three electrical segments of the three electrodes (212, 222, 240) on the user's (10) body. The electrical segments are positioned between the electrodes (212, 222, 240), allowing the therapist to determine how the power is distributed. The device can be configured to synchronize / synchronize through signal dephasing.

[0078] FIG. 4 shows a phased or dephased synchronization signal, with no derived current.

[0079] FIG. 5 shows a desynchronized signal that is phased or dephased, with one derived current.

[0080] In a second embodiment of the first configuration of Figure 6, there are two active electrodes (N=2), each connected to a voltage generator (210, 220). In the second embodiment, the device does not include a ground electrode. In the first configuration, the voltage generators (210, 220) are arranged in series.

[0081] As shown in FIGS. 6 and 7, active electrodes (212, 222) are provided to allow current to flow between the input and output of one of the active electrodes, and are active / neutral simultaneously or alternately.

[0082] In some embodiments, the device includes a smart active electrode, where the device has an inertial system that notifies the therapist of their movements in real time, allowing the therapist to modify their treatment regimen to use the device more efficiently. The inertial system can also detect the type of electrode being used, allowing the control module (214, 224) to adjust output depending on the type of electrode detected.

[0083] As an example, the device can withstand a maximum simple voltage of 400 Vrms, a maximum simple current of 1.2 Arms, and a power of 150 W for frequencies in the 300 kHz-1 MHz range, and 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 300 kHz-1 MHz range.

[0084] Thus, the voltage and intensity of the RF current can be advantageously varied through the present invention, allowing different intensities and frequencies to be utilized and different electrodes to be selectively coupled to each other.

[0085] The voltage generators (210, 220) can generate multi-frequency voltages through low-, medium-, and high-frequency signal modulation as specified in the present invention. The highest frequency voltage generator is amplitude modulated by the lowest frequency voltage generator. Each generator must provide a corresponding power to its associated electrode, and the power is adjusted by the generator amplitude and dephasing.

[0086] According to this possibility, the electrotherapy device includes a voltage generator 1 configured to generate a first voltage having a first frequency and including a first terminal and first and second output terminals, and a voltage generator configured to generate a second voltage having a second frequency exceeding the first frequency and including a third terminal and third and fourth output terminals. In this case, the device is characterized by including one transmit channel and one receive channel, with the first and third terminals connected to the corresponding transmit channel and the second and fourth terminals connected to the corresponding receive channel, respectively.

[0087] This allows two voltages of two different frequencies to be used as a single transmission channel and a single reception channel, where the electronic therapy device can be specifically controlled so that the first voltage generator generates a first voltage of a first frequency and the second voltage generator generates a second voltage of a second frequency.

[0088] Preferably, the controller is configured to generate signals associated with the sinusoidal voltage at the first frequency modulated to the third frequency and the sinusoidal voltage at the second frequency modulated to the fourth frequency in the transmission channel, the signals being the sum of the first generator voltage and the second generator voltage.

[0089] In another aspect, the process for operating the electrotherapy device comprises: a. generating a first voltage at a first frequency with a first generator; b. generating a second voltage at a second frequency exceeding the first frequency with a second generator, wherein a. and b. occur simultaneously and the two generators operate simultaneously.

[0090] According to one embodiment, the first voltage generator is configured to generate a sinusoidal voltage.

[0091] According to one embodiment, the first frequency belongs to a first frequency band between 1 kHz and 10 kHz.

[0092] According to one embodiment, a first voltage generator is configured to generate a sinusoidal voltage at a first frequency modulated to a third frequency.

[0093] According to one embodiment, the third frequency belongs to a third frequency band between 1 Hz and 150 Hz.

[0094] According to one embodiment, the third frequency is a sinusoidal voltage.

[0095] In this embodiment, the device generates a medium-frequency sine wave signal to modulate a low-frequency signal (electrical stimulation) and combines it with a high-frequency sine wave signal (diathermy). This allows the device to combine the advantages of electrical stimulation and diathermy radio frequencies on the same channel to generate a non-invasive current that promotes the body's natural healing mechanisms and activates cell metabolism. This method has excellent rehabilitation effects through the rapid recovery of muscle and joint function.

[0096] The result is a 1-10 kHz sinusoidal current modulated to a frequency of 1-150 Hz. The modulation of the stimulation current can avoid tetany of the excited muscles during electrical stimulation.

[0097] According to one embodiment, a second voltage generator is provided for sinusoidal voltage generation.

[0098] According to one embodiment, the second frequency is It belongs to the second frequency band between 100kHz and 10MHz.

[0099] According to one embodiment, a second voltage generator is provided for generating a sinusoidal voltage at the second frequency modulated to a fourth frequency.

[0100] According to one embodiment, the fourth frequency belongs to a fourth frequency band between 1 Hz and 150 Hz.

[0101] According to one embodiment, a fourth frequency generates the pulses.

[0102] According to one embodiment, the second voltage generator includes an activation controller configured to generate a sinusoidal voltage of the fourth frequency electrical stimulus.

[0103] According to one embodiment, the first voltage generator includes a transmission controller configured to transmit voltage at the fourth frequency from the first voltage generating module.

[0104] The embodiments of the present invention are not limited to the above-described matters and can be expanded to suit various requirements. [Explanation of symbols]

[0105] 10: User's body 110: Originating current between the two active electrodes 111: Originating current between two active electrodes 112: Originating current between two active electrodes 120: Current derived between active electrode and ground electrode 121: Current derived between active electrode and ground electrode 122: Current derived between active electrode and ground electrode 210: Voltage generator 211: Transformer 212: First voltage generator connected active electrode 213:Measurement part 214: Control module 220: Voltage generator 221: Transformer 222: Second voltage generator connected active electrode 223:Measurement part 224: Control module 230: Synchronization device 240: Neutral or ground electrode

Claims

1. 1. An electrotherapy device comprising: N electrodes (212, 222, 240), where N=2 or 3; and two or more sinusoidal voltage generators (210, 220); The device includes a plurality of transformers (211, 221) that separate each of the voltage generators (210, 220), and the voltage generators (210, 220) are separated by each of the transformers (211, 221); The electrotherapy device a first series configuration, where N=2, the electrodes (212, 222) are active electrodes, the plurality of voltage generators (210, 220) are arranged in series, the electrotherapy device does not include a ground electrode (240), each active electrode (212, 222) is configured to be coupled to a respective voltage generator (210, 220) and configured to generate a different electrical potential at each active electrode (212, 222), and allows current to be transmitted between the two closest active electrodes (212, 222); and a second parallel configuration in which N=3, two electrodes (212, 220) are active electrodes connected to respective voltage generators (210, 220), one electrode (240) is provided as a ground electrode for grounding connected to each of the voltage generators (210, 220), the plurality of voltage generators (210, 220) are arranged in parallel and are configured to generate different potentials at each active electrode (212, 222), and current is transmitted between the nearest active electrodes and / or between each active electrode (212, 222) and the ground electrode (240); and an electrotherapy device including a controller configured to alternate between said first series configuration and said second parallel configuration;

2. 2. The electrotherapy device of claim 1, wherein the voltage generators (210, 220) generate high frequency voltages between 100 kHz and 10 MHz.

3. 3. The electrotherapy device of claim 1, wherein each active electrode (212, 222) is coupled to each voltage generator (210, 220) and receives a first signal or a second signal generated by the respective voltage generator (210, 220), the first signal being different from the second signal.

4. 2. The electrotherapy device of claim 1, wherein the active electrodes (212, 222) are movably mounted.

5. 2. The electrotherapy device of claim 1, wherein the active electrodes (212, 222) are capacitive, resistive, or multipolar.

6. 2. The electrotherapy device of claim 1, wherein the voltage generator (210, 220) further comprises a measuring unit (213, 223) for measuring an output parameter of the voltage generator (210, 220).

7. 7. The electrotherapy device of claim 6, further comprising a control module (214, 224) configured to control one or more of the output current, frequency, and phase difference generation of the voltage generator (210, 220).

8. 8. An electrotherapy device according to claim 7, characterized in that the measuring unit (213, 223) communicates with the control module (214, 224) to provide data necessary for the control of the control module (214, 224).

9. 10. The electrotherapy device of claim 1, further comprising a synchronization device (230) configured for synchronous or desynchronized control of the voltage generators (210, 220).

10. 10. The electrotherapy device of claim 1, wherein the signals transmitted by the voltage generators in the first series configuration are dephased and synchronized.

11. The electrotherapy device includes a first voltage generator (210) configured to generate a first voltage having a first frequency and including a first terminal and a second terminal; a second voltage generator (220) configured to generate a second voltage having a second frequency greater than the first frequency and including a third terminal and a fourth terminal; Transmission Channel and Includes a receiving channel, The first and third terminals are connected to a transmitting channel, and the second and fourth terminals are connected to a receiving channel; a control device that controls the first voltage generator (210) to generate a first voltage at a first frequency and the second voltage generator (22) to generate a second voltage at a second frequency; 2. The electrotherapy device of claim 1, wherein the control device is configured to generate signals in the transmission channel associated with a sinusoidal voltage at a first frequency modulated to a third frequency and a sinusoidal voltage at a second frequency modulated to a fourth frequency, and wherein the signals in the transmission channel associated with the sinusoidal voltage at a first frequency modulated to a third frequency and a sinusoidal voltage at a second frequency modulated to a fourth frequency are sums of the voltages of the first generators.

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