Electrical stimulation systems and electrical stimulation devices

Abstract

This technology provides improved usability when using multiple electrical stimulation devices. [Solution] The electrical stimulation system 1 comprises a first electrical stimulation device 100_1 that applies electrical stimulation to the user's muscles and a second electrical stimulation device 100_2 that applies electrical stimulation to the user's muscles. When the first electrical stimulation device 100_1 and the second electrical stimulation device 100_2 are in a synchronized state in which the progress of their respective electrical stimulation programs is synchronized, the intensity of the electrical stimulation can be changed independently while maintaining that synchronized state.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to an electrical stimulation system and an electrical stimulation device.

BACKGROUND ART

[0002] Patent Document 1 discloses a muscle stimulation device that applies electrical stimulation to a user's muscles. This muscle stimulation device causes a weak current to flow through the muscles to tense and relax the muscles, thereby exercising the muscles. This allows, for example, muscle strengthening to be achieved.

PRIOR ART DOCUMENTS

PATENT DOCUMENTS

[0003]

PATENT DOCUMENT 1

SUMMARY OF THE INVENTION

PROBLEMS TO BE SOLVED BY THE INVENTION

[0004] The present disclosure has been made in such circumstances, and one exemplary object of an aspect thereof is to provide a technique that improves usability when a plurality of electrical stimulation devices are used.

MEANS FOR SOLVING THE PROBLEMS

[0005] To solve the above problem, an electrical stimulation system according to an aspect of the present disclosure includes a first electrical stimulation device that applies electrical stimulation to a user's muscles, and a second electrical stimulation device that applies electrical stimulation to the user's muscles. When the first electrical stimulation device and the second electrical stimulation device are in a synchronized state in which the progress of their respective electrical stimulation programs is synchronized, the intensity of the electrical stimulation can be changed independently while maintaining the synchronized state.

[0006] Another aspect of the present disclosure is an electrical stimulator. This device includes a control device that controls electrical stimulation to the user's muscles via electrodes. The control device can change the intensity of the electrical stimulation applied to the user's muscles via electrodes independently of the other electrical stimulator, while maintaining the synchronized state in which the electrical stimulation programs of the electrical stimulator and another electrical stimulator are synchronized.

[0007] Furthermore, any combination of the above components, or any substitution of the components or expressions of this disclosure between methods, apparatus, systems, etc., is also valid as a form of this disclosure. [Effects of the Invention]

[0008] This disclosure provides a technology that improves usability when using multiple electrical stimulation devices. [Brief explanation of the drawing]

[0009] [Figure 1] This figure shows the usage state of the electrical stimulation system according to the embodiment. [Figure 2] Figure 1 is a block diagram showing the functional configuration of the control device for the electrical stimulation device. [Figure 3] This figure shows the changes in the intensity of electrical stimulation over time when an electrical stimulation program is being executed. [Figure 4] This figure shows the usage status of the electrical stimulation system in a modified form. [Modes for carrying out the invention]

[0010] The present disclosure will be described below with reference to the drawings, based on preferred embodiments. The embodiments are illustrative and not limiting, and not all features or combinations thereof described in the embodiments are necessarily essential to the disclosure. In the embodiments and modifications, the same or equivalent components and members will be denoted by the same reference numerals, and redundant descriptions will be omitted as appropriate.

[0011] Figure 1 shows the usage state of the electrical stimulation system 1 according to an embodiment. The electrical stimulation system 1 comprises a first electrical stimulation device 100_1 and a second electrical stimulation device 100_2. When the first electrical stimulation device 100_1 and the second electrical stimulation device 100_2 are not specifically distinguished or are referred to collectively, they are simply called "electrical stimulation device 100".

[0012] The electrical stimulator 100 is an EMS (Electrical Muscle Stimulation) device that provides electrical stimulation to the user's muscles.

[0013] The electrical stimulation device 100 comprises a wearable body 102, a plurality of electrode sections 104, and a control device 106.

[0014] The device 102 can be attached to the user's thigh. When the device 102 is attached to the thigh, the multiple electrode parts 104 attached to the device 102 come into contact with the user's skin. In other words, the electrical stimulator 100 of this embodiment is an electrical stimulator for training the thigh.

[0015] Multiple electrode portions 104 are attached to the back surface of the wearable body 102, that is, the surface that comes into contact with the skin. The number of electrode portions 104 can be any number, and is not particularly limited. The multiple electrode portions 104 may be attached to the wearable body 102 in a way that prevents removal, or they may be attached to the wearable body 102 in a way that allows removal.

[0016] The electrode portion 104 may be an electrode that does not require a consumable gel pad, such as a resin electrode made of conductive EPDM (Ethylene Propylene Diene Monomer) rubber or conductive polyurethane. Resin electrodes can be used without water. The electrode portion 104 may also be a cloth electrode. Cloth electrodes are used after being moistened with water. The electrode portion 104 may also be a metallic electrode. Furthermore, the electrode portion 104 may be an electrode that requires a gel pad.

[0017] The control device 106 is attached to the surface of the wearable body 102, that is, the surface opposite to the back surface on which the plurality of electrode units 104 are provided. Although not limited thereto, the control device 106 is detachably attached to the wearable body 102.

[0018] The control device 106 controls the entire electrical stimulation apparatus 10. The control device 106 supplies power to the pair or a plurality of pairs of electrode units 104 to apply electrical stimulation to the user's muscles. That is, the control device 106 applies electrical stimulation to the user's muscles via the electrode units 104.

[0019] Figure 2 is a block diagram showing the functions and configuration of the control device 106 of the electrical stimulation apparatus 100 in Figure 1. The control devices 106 of the two electrical stimulation apparatuses 100 are configured in the same manner.

[0020] Each block shown in Figure 2 can be implemented in hardware by elements and mechanical devices including a CPU (Central Processing Unit) of a computer, and in software by a computer program or the like. Here, functional blocks implemented by the cooperation thereof are illustrated. Therefore, it is understood by those skilled in the art who have referred to the present specification that these functional blocks can be implemented in various forms by a combination of hardware and software.

[0021] The control device 106 further includes an operation unit 112, a communication unit 116, a power supply unit 118, and a control unit 120.

[0022] The operation unit 112 is provided on the housing of the control device 106. The operation unit 112 receives a user's operation and outputs a control signal corresponding to the content of the user's operation to the control unit 120. The control unit 120 executes control based on the operation signal. The operation unit 112 includes, for example, buttons for increasing or decreasing the intensity of electrical stimulation (in other words, the level of power supplied to the electrode unit 104). For example, the intensity of electrical stimulation at levels from 1 to N (e.g., N=20, where a higher level indicates stronger electrical stimulation) may be selectable. In other words, for the power supplied to the electrode unit 104, power levels from 1 to N may be selectable. In this case, the higher the power level, the higher the power supplied to the electrode unit 104, and thus the stronger the electrical stimulation.

[0023] The communication unit 116 performs wireless communication with the communication unit 116 of the other electrical stimulation device 100. Although not limited thereto, the communication unit 116 communicates with the communication unit 116 of the other electrical stimulation device 100 using a short-range wireless communication technology such as Bluetooth (registered trademark). The communication unit 116 may be pre-paired with the communication unit 116 of the other electrical stimulation device 100.

[0024] The power supply unit 118 is electrically connected to the control unit 120 and supplies power to the control unit 120. The power supply unit 118 is preferably a secondary battery such as a lithium-ion battery, but may be a primary battery. Alternatively, the power supply unit 118 may be configured to receive power supply from a commercial power source such as AC 100V.

[0025] The control unit 120 includes a synchronization setting registration unit 121, an interlocking setting registration unit 122, an electrical stimulation intensity registration unit 123, an electrical stimulation control unit 124, a synchronization setting storage unit 125, an interlocking setting storage unit 126, and an electrical stimulation intensity storage unit 127.

[0026] The synchronization setting memory unit 125 stores the synchronization setting, i.e., whether synchronization is ON or OFF. When the synchronization setting is ON, the control devices 106 of the two electrical stimulation devices 100 automatically establish a wireless connection with each other and synchronize the progress of each electrical stimulation program. The state in which the progress of each electrical stimulation program is synchronized is called the "synchronized state". When the synchronization setting is ON, the power off may also be synchronized. In other words, if the power of one electrical stimulation device 100 is turned off, the power of the other electrical stimulation device 100 may also be turned off.

[0027] When the synchronization setting is OFF (i.e., non-synchronized), the control devices 106 of the two electrical stimulators 100 do not synchronize the electrical stimulation programs of each other. When the synchronization setting is OFF, the control devices 106 of the two electrical stimulators 100 do not need to establish a wireless connection with each other. The synchronization setting being OFF can also be understood as a setting that does not establish a wireless connection with each other. Therefore, the synchronization setting being OFF may be achieved by not establishing or canceling a wireless connection with each other.

[0028] The sync setting memory unit 125 stores the sync setting before the power was turned off, although this is not always the case. At the time of shipment, however, the sync setting memory unit 125 stores the ON setting.

[0029] The interlock setting memory unit 126 stores the interlock setting for changing the intensity of electrical stimulation, that is, whether the interlock is ON or OFF. When the interlock setting is ON, as will be described in detail later, when the intensity of electrical stimulation of one electrical stimulator 100 is raised or lowered, the intensity of electrical stimulation of the other electrical stimulator 100 is raised or lowered in conjunction, and when the intensity of electrical stimulation of the other electrical stimulator 100 is raised or lowered, the intensity of electrical stimulation of the first electrical stimulator 100 is raised or lowered in conjunction.

[0030] When the linkage setting is OFF (i.e., non-linkage), as will be explained in more detail later, even if the intensity of electrical stimulation from one electrical stimulator 100 is increased or decreased, the intensity of electrical stimulation from the other electrical stimulator 100 will not be increased or decreased, and even if the intensity of electrical stimulation from the other electrical stimulator 100 is increased or decreased, the intensity of electrical stimulation from the first electrical stimulator 100 will not be increased or decreased.

[0031] The interlock setting memory unit 126 does not store the settings before the power was turned off, although this is not the case. When the power is turned back on, the interlock is turned ON regardless of the settings before the power was turned off.

[0032] The electrical stimulation intensity memory unit 127 stores the intensity of the electrical stimulation. However, the electrical stimulation intensity memory unit 127 does not store the intensity of the electrical stimulation before the power was turned off. When the power is turned back on, the intensity of the electrical stimulation becomes zero, regardless of the intensity of the electrical stimulation before the power was turned off.

[0033] The electrical stimulation control unit 124 controls the power supply from the power supply unit 118 to the pair of electrode units 104. More specifically, the electrical stimulation control unit 124 applies a voltage between the pair of electrode units 104 to provide electrical stimulation. The electrical stimulation control unit 124 applies a voltage between the pair of electrode units 104 according to the electrical stimulation program. The electrical stimulation program may be stored in the control unit 120 in advance, or it may be downloaded via a server or the like.

[0034] An example of an electrical stimulation program configuration is shown. Note that the electrical stimulation program is not limited to this example. The electrical stimulation program includes phases (A) to (G). The length of each phase is not particularly limited, but in this example it is set as follows. (A) Warm-up phase: 30 seconds (B) First training phase: 240 seconds (C) First conditioning phase: 60 seconds (D) Second training phase: 240 seconds (E) Second conditioning phase: 60 seconds (F) Third training phase: 240 seconds (G) Cooldown Phase: 30 seconds

[0035] The warm-up phase is the first phase of an electrical stimulation program and is designed to ensure a smooth transition to the training phase. During the warm-up phase, the frequency of the electrical stimulation is gradually increased. For example, the frequency of the electrical stimulation is gradually increased in the order of 2Hz, 4Hz, 8Hz, and 16Hz.

[0036] The first to third training phases are the main phases for training the thigh muscles. During the training phases, electrical stimulation at a frequency suitable for incomplete tetanus is applied to the muscles. In this example, electrical stimulation at 20 Hz, which is considered to allow for continuous and efficient training, is applied.

[0037] The first and second conditioning phases are phases that take place between the two training phases. In the conditioning phases, electrical stimulation at frequencies of 4 Hz and 2 Hz is repeatedly applied to adjust the condition of the muscles.

[0038] The cool-down phase is the final phase of the electrical stimulation program and is the phase in which the body cools down after training. In the cool-down phase, unlike the warm-up phase, the frequency of the electrical stimulation is gradually decreased. For example, it is gradually decreased in the order of 16Hz, 8Hz, 4Hz, and 2Hz.

[0039] During the warm-up phase, the three training phases, and the three conditioning phases, the user-set electrical stimulation intensity, i.e., the intensity stored in the electrical stimulation intensity memory unit 127, is applied. During the cool-down phase, the intensity of the electrical stimulation is gradually reduced from the user-set intensity. For example, the intensity of the electrical stimulation is reduced at the same time as the frequency is reduced.

[0040] When the synchronization setting is ON, the electrical stimulation control unit 124 synchronizes the progress of the electrical stimulation program between itself and the other electrical stimulation device 100 at an appropriate timing. The progress of either of the two electrical stimulation devices 100's electrical stimulation program may be used as the reference. For example, the electrical stimulation control unit 124 synchronizes the progress of the electrical stimulation programs at the start of each phase (A) to (G). When the synchronization setting is OFF, the electrical stimulation control unit 124 executes the electrical stimulation program independently. In other words, according to this embodiment, it is possible to train by synchronizing the progress of the electrical stimulation programs of the two electrical stimulation devices 100, or by training without synchronization.

[0041] The electrical stimulation control unit 124 maintains the synchronized state of the electrical stimulation program even if the linkage setting is changed from ON to OFF or OFF to ON while the electrical stimulation program is running. Furthermore, the electrical stimulation control unit 124 maintains the synchronized state of the electrical stimulation program even if the intensity of the electrical stimulation is changed linkedly or independently while the electrical stimulation program is running.

[0042] The electrical stimulation control unit 124 can execute the electrical stimulation program independently, even if the synchronization setting is ON, when the power to the other electrical stimulation device 100 is turned off.

[0043] If the power to the other electrical stimulator 100 is turned on while the other electrical stimulator 100 is executing an electrical stimulation program, the electrical stimulation control unit 124 may or may not synchronize with the progress of the electrical stimulation program of the other electrical stimulator 100.

[0044] When the operation unit 112 outputs an operation signal to change the synchronization setting from ON to OFF or from OFF to ON, the synchronization setting registration unit 121 changes the synchronization setting stored in the synchronization setting storage unit 125.

[0045] When the operation unit 112 outputs an operation signal to change the linkage setting for electrical stimulation from ON to OFF or from OFF to ON, the linkage setting registration unit 122 changes the linkage setting stored in the linkage setting storage unit 126.

[0046] When the operation unit 112 outputs an operation signal to increase or decrease the intensity of the electrical stimulation, the electrical stimulation intensity registration unit 123 increases or decreases the intensity of the electrical stimulation stored in the electrical stimulation intensity memory unit 127 by +1 / -1. If the synchronization is active and the linkage setting is ON, it further sends an instruction to increase or decrease the intensity of the electrical stimulation to the control device 106 of the other electrical stimulator 100. If the linkage setting is OFF, it does not send an instruction to increase or decrease the intensity of the electrical stimulation to the control device 106 of the other electrical stimulator 100. Furthermore, when the control device 106 of the other electrical stimulator 100 sends an instruction to increase or decrease the intensity of the electrical stimulation, the electrical stimulation intensity registration unit 123 increases or decreases the intensity of the electrical stimulation stored in the electrical stimulation intensity memory unit 127 by +1 / -1. However, if the intensity of the electrical stimulation is already at its maximum or minimum value, the electrical stimulation intensity registration unit 123 does not increase or decrease the intensity of the electrical stimulation stored in the electrical stimulation intensity memory unit 127 by +1 / -1.

[0047] As a variation, when the operation unit 112 outputs an operation signal to increase / decrease the intensity of the electrical stimulation, the electrical stimulation intensity registration unit 123 may send an instruction to increase / decrease the intensity of the electrical stimulation to the control device 106 of the other electrical stimulation device 100, regardless of whether the interlock setting is ON or OFF. In this case, when the electrical stimulation intensity registration unit 123 receives an instruction to increase / decrease the intensity of the electrical stimulation from the control device 106 of the other electrical stimulation device 100 and the interlock setting is ON, it increases / decreases the intensity of the electrical stimulation stored in the electrical stimulation intensity storage unit 127 by +1 / -1, and when the interlock setting is OFF, it does not change the intensity of the electrical stimulation stored in the electrical stimulation intensity storage unit 127.

[0048] In any case, when the linkage setting is ON, the intensity of the electrical stimulation from the two electrical stimulators 100 is changed in conjunction. That is, each time the intensity of the electrical stimulation from the electrical stimulator 100 is increased or decreased by 1, the intensity of the electrical stimulation from the other electrical stimulator 100 is also increased or decreased by 1, and each time the intensity of the electrical stimulation from the other electrical stimulator 100 is increased or decreased by 1, the intensity of the electrical stimulation from the electrical stimulator 100 is also increased or decreased by 1. When the linkage setting is OFF, the intensity of the electrical stimulation from the two electrical stimulators 100 is changed independently. That is, even if the intensity of the electrical stimulation from the electrical stimulator 100 is increased or decreased by 1, the intensity of the electrical stimulation from the other electrical stimulator 100 is not changed, and even if the intensity of the electrical stimulation from the other electrical stimulator 100 is increased or decreased by 1, the intensity of the electrical stimulation from the electrical stimulator 100 is not changed.

[0049] Furthermore, if the linked setting is turned OFF, and the electrical stimulation intensities of the two electrical stimulators 100 are different, and then the linked setting is changed, the electrical stimulation intensities of the electrical stimulators 100 will be changed in conjunction while maintaining the difference in intensity.

[0050] The ability to change the intensity of electrical stimulation from two electrical stimulators 100 in a synchronized manner allows the intensity of electrical stimulation from both devices to be changed by operating only one electrical stimulator 100. In particular, even when the two electrical stimulators 100 are in a synchronized state, the intensity of electrical stimulation can be changed in a synchronized manner while maintaining that synchronized state. Furthermore, the ability to change the intensity of electrical stimulation from two electrical stimulators 100 independently allows for differences in the intensity of electrical stimulation from the two devices. In particular, even when the two electrical stimulators 100 are in a synchronized state, differences in the intensity of electrical stimulation can be created while maintaining that synchronized state. Therefore, it is easy to use.

[0051] Figure 3 shows the time-series changes in the intensity of electrical stimulation during the execution of an electrical stimulation program. It explains the changes in electrical stimulation intensity due to the linkage or non-linkage.

[0052] In Figure 3, time T represents the time elapsed since the start of the electrical stimulation program. At each time T, the graph on the left shows the intensity of the electrical stimulation from the first electrical stimulator 100_1, and the graph on the right shows the intensity of the electrical stimulation from the second electrical stimulator 100_2.

[0053] In this example, at each of the timings T=5min, T=9min, T=10min, T=11min, T=12min, and T=14min, the operating section 112 of the control device 106 of the first electrical stimulator 100_1 is operated to change the intensity of the electrical stimulation.

[0054] At the timing of T=5min, the intensity of the electrical stimulation from the first electrical stimulator 100_1 is increased. As a result, the intensity of the electrical stimulation from the first electrical stimulator 100_1 is higher than before. Because the linkage setting is ON, the intensity of the electrical stimulation from the second electrical stimulator 100_2 is also increased.

[0055] At the timing of T=9min, the intensity of the electrical stimulation from the first electrical stimulator 100_1 is increased. As a result, the intensity of the electrical stimulation from the first electrical stimulator 100_1 is higher than before. Because the linkage setting is OFF, the intensity of the electrical stimulation from the second electrical stimulator 100_2 has not been changed. As a result, there is an intensity difference in the electrical stimulation from the two electrical stimulators 100.

[0056] At the timing of T=10min, the intensity of the electrical stimulation from the first electrical stimulator 100_1 is increased. As a result, the intensity of the electrical stimulation from the first electrical stimulator 100_1 increases, reaching its maximum. Because the linkage setting is ON, the intensity of the electrical stimulation from the second electrical stimulator 100_2 is also increased. As a result, the intensity of the electrical stimulation from the two electrical stimulators 100 increases while maintaining the intensity difference.

[0057] At the timing of T=11min, the intensity of the electrical stimulation from the first electrical stimulator 100_1 is increased. However, since the intensity of the electrical stimulation from the first electrical stimulator 100_1 has reached its maximum, the intensity of the first electrical stimulator 100_1 has not been changed. Because the linkage setting is ON, the intensity of the electrical stimulation from the second electrical stimulator 100_2 has increased. As a result, the intensity difference between the electrical stimulation from the two electrical stimulators 100 has decreased.

[0058] At the timing of T=12min, the intensity of the electrical stimulation from the first electrical stimulator 100_1 is increased. However, since the intensity of the electrical stimulation from the first electrical stimulator 100_1 has reached its maximum, the intensity of the first electrical stimulator 100_1 has not been changed. Because the linkage setting is ON, the intensity of the electrical stimulation from the second electrical stimulator 100_2 has increased. As a result, there is no difference in intensity between the electrical stimulation from the two electrical stimulators 100.

[0059] At the timing of T=14min, the intensity of the electrical stimulation from the first electrical stimulator 100_1 is reduced. As a result, the intensity of the electrical stimulation from the first electrical stimulator 100_1 is lower than before. Because the linkage setting is ON, the intensity of the electrical stimulation from the second electrical stimulator 100_2 is also reduced.

[0060] The present disclosure has been described above based on embodiments. These embodiments are illustrative, and it will be understood by those skilled in the art that various modifications are possible by combining their respective components and processing steps, and that such modifications are also within the scope of the present disclosure. Such modifications will be described below.

[0061] (Variation 1) Unlike the embodiment, three or more electrical stimulation devices 100 may synchronize the progress of each other's electrical stimulation programs.

[0062] Figure 4 shows the usage state of the modified electrical stimulation system 1. In addition to the first electrical stimulation device 100_1 and the second electrical stimulation device 100_2, the electrical stimulation system 1 further comprises a third electrical stimulation device 100_3. The third electrical stimulation device 100_3 is an electrical stimulation device that applies electrical stimulation to the soles of both feet. The control device (not shown) of the third electrical stimulation device 100_3 is configured similarly to the control devices 106 of the first electrical stimulation device 100_1 and the second electrical stimulation device 100_2. When the synchronization setting is ON, the three electrical stimulation devices 100 proceed in sync with each other's electrical stimulation programs. The first electrical stimulation device 100_1 and the second electrical stimulation device 100_2 may only be able to execute the electrical stimulation program for the third electrical stimulation device 100_3 when they are synchronized with the third electrical stimulation device 100_3.

[0063] (Modification 2) Unlike the embodiment, the wearable body 102 may be configured to be attachable to the lower leg, arm, or other body part. In other words, the electrical stimulator 100 may be an electrical stimulator for training the lower leg, arm, or other body part.

[0064] (Variation 3) Although not specifically mentioned in this embodiment, the intensity of the electrical stimulation before the power of the electrical stimulation device 100 was turned off, that is, the intensity of the electrical stimulation during the previous electrical stimulation program execution, may be stored. For example, when the next electrical stimulation program is executed, the intensity of the electrical stimulation from the two electrical stimulation devices 100 may be gradually increased to the same intensity as during the previous electrical stimulation program execution. In this case, the difference in electrical stimulation intensity from the previous electrical stimulation program execution can be achieved when the next electrical stimulation program is executed.

[0065] Any combination of the embodiments and modifications described above is also useful as an embodiment of this disclosure. The new embodiments resulting from such combinations possess the combined effects of both the combined embodiments and the modifications. [Explanation of Symbols]

[0066] 100 Electrical stimulator, 100_1 First electrical stimulator, 100_2 Second electrical stimulator, 104 Electrode section, 106 Control device.

Claims

1. A first electrical stimulator that applies electrical stimulation to the user's muscles, A second electrical stimulator that applies electrical stimulation to the user's muscles, Equipped with, When the first electrical stimulator and the second electrical stimulator are in a synchronized state in which the progress of their respective electrical stimulation programs is synchronized, the intensity of the electrical stimulation can be changed independently while maintaining that synchronized state. Electrical stimulation system.

2. When the first electrical stimulator and the second electrical stimulator are in the synchronized state, and the intensity of the electrical stimulation from the first electrical stimulator and the second electrical stimulator is different from that of the first electrical stimulator and the second electrical stimulator, the intensity of the electrical stimulation from the first electrical stimulator and the second electrical stimulator can be changed in conjunction while maintaining the difference in intensity. The electrical stimulation system according to claim 1.

3. It is equipped with a control device that controls electrical stimulation to the user's muscles via electrodes. The control device, when the electrical stimulator and another electrical stimulator are in a synchronized state in which the progress of their respective electrical stimulation programs is synchronized, can change the intensity of the electrical stimulation applied to the user's muscles via the electrode section independently of the other electrical stimulator while maintaining that synchronized state. Electrical stimulation device.

4. When the electrical stimulator and the other electrical stimulator are in the synchronized state, and the intensity of the electrical stimulation applied to the user's muscles by the electrical stimulator and the other electrical stimulator is different, the control device can change the intensity of the electrical stimulation of the electrical stimulator and the other electrical stimulator in conjunction while maintaining the difference in intensity. The electrical stimulation device according to claim 3.

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