Wearable body and electrical stimulator

Abstract

This technology provides a way to increase the contact pressure between the electrodes of an electrical stimulator and the skin. [Solution] The electrical stimulation device 100 comprises a wearable body 102, which includes a wearable body 130 that can be attached to a predetermined body part in a manner that surrounds the body part, and a band 140, one end of which is fixed to the wearable body 130, for tightening the wearable body 130 to the body part. When the wearable body 130 is attached to the body part and the band 140 tightens the wearable body 130 to the body part, the band 140 at least partially overlaps the electrode portion 104 for applying electrical stimulation to the body part, which is attached to the back surface of the wearable body 130, via the wearable body 130.

Description

[Technical Field]

[0001] The present disclosure relates to a wearing body 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 the muscles to exercise by passing a weak current through the muscles to cause the muscles to tense and relax. This enables, for example, muscle strength enhancement. [Prior Art Document] [Patent Document]

[0003] [Patent Document 1] Japanese Unexamined Patent Publication No. 2022-042782 [Summary of the Invention] [Problem to be Solved by the Invention]

[0004] Sufficient techniques for increasing the contact pressure between the electrode section of an electrical stimulation device and the skin have not been proposed to date.

[0005] The present disclosure has been made under such circumstances, and one of the exemplary objects of an embodiment thereof is to provide a technique for increasing the contact pressure between the electrode section of an electrical stimulation device and the skin. [Means for Solving the Problem]

[0006] In order to solve the above problem, a wearing body according to an aspect of the present disclosure is a wearing body for an electrical stimulation device, comprising: a wearing body main body that can be attached to a predetermined body part in a state of surrounding the body part; and a band having one end side fixed to the wearing body main body, the band being for tightening the wearing body main body onto the body part. In a state where the wearing body main body is attached to the body part and the wearing body main body is tightened onto the body part by the band, the band at least partially overlaps, via the wearing body main body, with an electrode section attached to the back surface of the wearing body main body for applying electrical stimulation to the body part.

[0007] Another aspect of the present disclosure is an electrical stimulation device. This device comprises the above-described body, a plurality of electrode sections provided on the back surface of the body, and a control device that supplies power to the plurality of electrode sections.

[0008] 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]

[0009] This disclosure provides a technology to increase the contact pressure between the electrode portion of an electrical stimulator and the skin. [Brief explanation of the drawing]

[0010] [Figure 1] This is a diagram showing the configuration of an electrical stimulation device according to an embodiment. [Figure 2] Figure 1 is a block diagram showing the functions and configuration of the control device. [Figure 3] Figure 1 is a flowchart illustrating an example of the operation of an electrical stimulation device. [Figure 4] This is a diagram of the electrical stimulation device shown in Figure 1. [Figure 5] This is a diagram of the electrical stimulation device shown in Figure 1. [Figure 6] This is a diagram of the electrical stimulation device shown in Figure 1. [Figure 7] This is a diagram of the electrical stimulation device shown in Figure 1. [Figure 8] This is a cross-sectional view along line AA in Figure 5. [Figure 9] This figure shows the core material of the mounting device shown in Figure 1. [Modes for carrying out the invention]

[0011] 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.

[0012] Figure 1 is a diagram showing the configuration of an electrical stimulator 100 according to an embodiment. The electrical stimulator 100 is an EMS (Electrical Muscle Stimulation) device that provides electrical stimulation to the user's muscles. The electrical stimulator 100 comprises a wearable body 102, a plurality of electrode units 104, and a control device 106.

[0013] The wearable device 102 can be attached to the user's waist. When the wearable device 102 is attached to the waist, the multiple electrode parts 104 attached to the wearable device 102 come into contact with the user's skin.

[0014] 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.

[0015] 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.

[0016] The control device 106 is attached to the surface of the wearable body 102, that is, the surface opposite to the back surface where the plurality of electrode units 104 are provided. The control device 106 is, but not limited to, detachably attached to the wearable body 102.

[0017] The control device 106 controls the entire electrical stimulation device 100. For example, the control device 106 supplies power to the pair of electrode units 104 to apply electrical stimulation to the user.

[0018] As a modification, the control device 106 does not need to be attached to the wearable body 102. In this case, the control device 106 and the plurality of electrode units 104 may be electrically connected by a cable.

[0019] FIG. 2 is a block diagram showing functions and configurations of the control device 106 in FIG. 1. Each block shown in FIG. 2 can be implemented in terms of hardware by elements and mechanical devices including a CPU (Central Processing Unit) of a computer, and in terms of software by a computer program or the like. Here, functional blocks implemented by cooperation of these components are illustrated. Therefore, it is understood by those skilled in the art who have read the present specification that these functional blocks can be implemented in various forms by combinations of hardware and software.

[0020] The control device 106 further includes an operation unit 112, a contact detection unit 114, a communication unit 116, a power supply unit 118, and a control unit 120.

[0021] The operation unit 112 is provided on a housing of the control device 106. When a user operates the operation unit 112, an operation signal corresponding to the operation is generated. The control unit 120 executes control based on the operation signal. The operation unit 112 may include buttons for increasing or decreasing the level of electrical stimulation.

[0022] The contact detection unit 114 detects when multiple electrode units 104 are in contact with the skin. In this embodiment, the contact detection unit 114 is configured as a current detection unit that detects the current flowing between the multiple electrode units 104. That is, when multiple electrode units 104 are in proper contact with the skin, a current flows between the multiple electrode units 104 through the skin, and skin contact can be detected by detecting this current.

[0023] The communication unit 116 communicates with an external device. The communication unit 116 may be configured as a wireless communication unit or as a wired communication unit. The purpose of communication is not particularly limited, but it may transmit the training history of the electrical stimulator 100 to the external device, or it may receive commands from the external device regarding the operation of the electrical stimulator 100 or changes to its settings.

[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 it may also be a primary battery. Alternatively, the power supply unit 118 may be configured to receive power from a commercial power source such as AC 100V.

[0025] When the contact detection unit 114 detects that multiple electrode units 104 are in contact with the skin, the control unit 120 applies a voltage between the multiple electrode units 104, in other words, applies electrical stimulation, for a predetermined operating time (e.g., 10 minutes) and a predetermined period (e.g., a period with a frequency of 20 Hz), according to, for example, a motion control program.

[0026] The above describes the basic configuration of the electrical stimulation device 100. Next, its operation will be explained.

[0027] Figure 3 is a flowchart illustrating an example of the operation of the electrical stimulator 100. The electrical stimulator 100 is powered on while the user is wearing it around their waist (S102). When the control unit 120 receives an instruction to start electrical stimulation (S104), it determines whether all of the electrode units 104 are in contact with the skin based on the detection results from the contact detection unit 114 (S106). If any of the electrode units 104 are not in contact with the skin (N in S106), the control unit 120 waits for a predetermined waiting time before returning to the beginning of step S106. If the electrode units 104 are in contact with the skin (Y in S106), the control unit 120 starts applying electrical stimulation (S108). Applying electrical stimulation can promote blood flow. It is also expected that the muscles will contract continuously and become hypertrophied.

[0028] The control unit 120 determines whether or not the termination condition is met (S110). The termination condition may be, for example, that a predetermined operating time has elapsed, that the pair of electrode units 104 are no longer in contact with the skin, or that a termination instruction has been received from an external source (e.g., the user). If the termination condition is not met (N in S110), the control unit 120 waits for a predetermined waiting time and then returns the process to the beginning of S108. If the termination condition is met (Y in S110), the control unit 120 terminates the process. At this time, the power to the electrical stimulator 100 may be turned off.

[0029] Next, we will provide a more detailed explanation of the electrical stimulation device 100, focusing on the wearable body 102.

[0030] Figures 4-7 show the electrical stimulation device 100. In Figures 4 and 5, the wearable body 102 is unfolded to form a band shape. Figure 4 shows the front side of the wearable body 102, and Figure 5 shows the back side of the wearable body 102. Figures 6 and 7 show the wearable body 102 in a cylindrical shape when worn around the waist. Figure 6 shows the front side of the wearable body 102, and Figure 7 shows the back side of the wearable body 102. Figure 8 is a cross-sectional view taken along line AA of Figure 5. Figure 9 shows the core material.

[0031] The mounting body 102 comprises a mounting body main body 130, a pair of left and right bands 140L and 140R for tightening the mounting body main body 130, a core material 150, and a cushioning member 160.

[0032] The main body 130 is a component worn around the waist and, as shown in Figures 4 and 5, takes the form of a strip when unfolded. A pair of connecting parts 130a, which can be connected to and disconnected from each other, are provided at both ends in the longitudinal direction of the main body 130. In the illustrated example, the pair of connecting parts 130a are wire fasteners (chucks), but are not limited to these and may be hook-and-loop fasteners, snap buttons, or other fasteners. The main body 130 takes the form of a cylinder as shown in Figures 6 and 7 when the pair of connecting parts 130a are connected to each other. The main body 130 is worn around the waist by wrapping it around the waist so that the back surface 130b of the main body 130 is in contact with the user and the pair of connecting parts 130a are positioned in front of the user, and by connecting the pair of connecting parts 130a to each other. As a modification, the main body 130 may be formed into a cylinder shape beforehand.

[0033] The main body of the wearer 130 is formed by overlapping a design-side (front) fabric 131 and a skin-side (back) fabric 132, although this is not limited to the above. The design-side fabric 131 and the skin-side fabric 132 may each consist of one layer or multiple layers.

[0034] The skin-facing fabric 132 may include a layer made of a material with low breathability, such as polyurethane. In this case, the conductivity due to perspiration can be stabilized and the exercise effect can be improved.

[0035] The vertical width of the body 130 is not particularly limited, but it is preferable that it be relatively wide so as to reliably support the lumbar spine. For example, the body 130 may have a vertical width in the left-right central region when unfolded (i.e., the region that touches the waist when worn) that is opposite to and able to support the entire lumbar spine and at least a part of the pelvis (e.g., the sacrum). As an example, the vertical width W in the left-right central region of the body 130 may be 25 cm or more and 30 cm or less, assuming the average physique of an adult Japanese woman.

[0036] Multiple electrode portions 104 are attached to the back surface 130b of the main body 130 of the device. Therefore, the main body 130 of the device can also be considered as a component for holding the electrode portions 104.

[0037] When the main body of the wearer 130 is deployed, a pair of electrodes 104_1L and 104_1R for electrically stimulating the back muscles are attached to the left and right central regions. Specifically, the pair of electrodes 104_1L and 104_1R are attached so as to extend vertically when the main body of the wearer 130 is attached to the waist.

[0038] When the body of the wearer 130 is deployed, a pair of electrode sections 104_2L and 104_2R for electrically stimulating the psoas muscle are attached to the regions at both ends. Specifically, when the body of the wearer 130 is attached, the pair of electrode sections 104_2L and 104_2R are attached so that they extend downward as they approach the pair of connection sections 130a.

[0039] The multiple electrode portions 104 may be permanently attached to the body 130, or they may be permanently attached to the body 130.

[0040] The pair of left and right bands 140L and 140R are bands used to fasten the main body 130 of the device to the waist.

[0041] One end of the bands 140L and 140R is fixed to the core material 150 or the body of the device 130 in the central area when the body of the device 130 is deployed.

[0042] The other end (tip) of the bands 140L and 140R is provided with a band-side engaging portion 140a on its back surface, which engages with a body-side engaging portion 130d provided on the surface 130c of the mounting body 130. The band-side engaging portion 140a is not particularly limited, but in the illustrated example, it is a hook-and-loop fastener.

[0043] The bands 140L and 140R serve to fix and stabilize the pelvis, i.e., act as a pelvic belt, and also serve to press multiple electrode sections 104 against the skin.

[0044] The bands 140L and 140R include a first band portion 141, a second band portion 142, and a joining member 143 that joins the first band portion 141 and the second band portion 142.

[0045] The first band portion 141 has a horizontal V-shape. The first band portion 141 can also be considered to be composed of two upper and lower bands 141a and 141b. The second band portion 142, however, has a linear shape.

[0046] The first band portion 141 is elastic in its longitudinal direction. On the other hand, the second band portion 142 is not elastic in its longitudinal direction, so that the first band portion 141 can stretch easily. "Not elastic" means that it will not stretch or contract under the force of a person pulling it. Furthermore, "not elastic" includes not only cases where it does not stretch or contract at all, but also cases where it stretches or contracts slightly, which is unavoidable due to the material or structure. For example, the elasticity of the first band portion 141 may be 50% or more, and the elasticity of the second band portion 142 may be less than 5%.

[0047] As a variation, both the first band portion 141 and the second band portion 142 may be elastic. In this case, the first band portion 141 may have higher elasticity than the second band portion 142.

[0048] In any case, the fact that at least the first band portion 141 is elastic allows for a relatively strong tightening around the waist. Furthermore, because the main body of the wearer 130 can be tightened relatively strongly around the waist, the contact pressure between the multiple electrode portions 104 and the skin can be increased.

[0049] Furthermore, the V-shaped first band portion 141 is elastic, and therefore, when the first band portion 141 stretches, a relatively wide area can be tightened by the two upper and lower bands 141a and 141b. For example, the two upper and lower bands 141a and 141b can be tightened so that they overlap the ilium. This allows for more stable support of the waist.

[0050] When the band 140 is tightened to the body 130, that is, when the band-side engaging portion 140a at the tip of the band 140 is fixed to the body-side engaging portion 130d of the body 130, the band 140 overlaps at least one electrode portion 104 at least partially via the body 130. In the illustrated example, the band 140 partially overlaps the electrode portion 104_1 for the back muscles via the body 130, and partially overlaps the electrode portion 104_2 for the iliopsoas muscle via the body 130. The band 140 at least partially overlapping the electrode portion 104 via the body 130 causes the electrode portion 104 to be pressed against the skin by the band 140, increasing the contact pressure between the electrode portion 104 and the skin.

[0051] Furthermore, the main body-side engaging portion 130d of the wearer body 130 is located on a surface that overlaps with the electrode portion 104_2 for the iliopsoas muscle. Therefore, the band-side engaging portion 140a of the band 140 is fixed to the wearer body 130 so as to overlap with the electrode portion 104_2. As described above, the first band portion 141 of the band 140 is elastic, and the band 140 is secured to the main body-side engaging portion 130d of the wearer body 130 when the first band portion 141 is stretched. As a result, the main body-side engaging portion 130d is pulled towards the back, and consequently, the electrode portion 104_2 is pressed relatively strongly against the skin, increasing the contact pressure between the electrode portion 104_2 and the skin.

[0052] The main body engagement portion 130d is located below the midpoint in the vertical direction of the end of the two bands 141a and 141b of the first band portion 141 that is opposite to the second band portion 142. In other words, the main body engagement portion 130d is located relatively low. Therefore, the user pulls the band 140 forward and downward to attach the end of the band 140 to the attachment part. That is, the user pulls the end of the band diagonally downward toward the lower abdomen to attach it to the attachment part. As a result, the band 140 is fixed to the main body 130 of the wearer such that the second band portion 142 is positioned lower toward the front. This compresses the lower abdomen, increases abdominal pressure, and reduces the burden on the erector spinae muscles and lumbar vertebrae. It also makes it possible to press the electrode portion 104_2 for the iliopsoas muscle. Furthermore, it is possible to avoid the band 140 interfering with the control device 106.

[0053] The surface 130c of the main body 130 of the wearer is provided with a retaining engagement portion 130e for holding the band 140 when not in use. The retaining engagement portion 130e is provided, however not limited to, in a position opposite to the band-side engagement portion 140a of the band 140 when the band 140 is not extended. The retaining engagement portion 130e is provided, for example, midway between the center and the end in the longitudinal direction of the wearer body 130. By fixing the band-side engagement portion 140a of the band 140 to the retaining engagement portion 130e of the wearer body 130, the band 140 does not hang down, making it easy to pick up the band 140 after wearing the wearer body 130 around the waist. Also, because the band 140 does not hang down, it looks good when not in use. Furthermore, it prevents the band 140 from getting caught on something and causing inconvenience.

[0054] When the wearer body 130 is worn around the waist, the left and right portions 130f of the lower edge that surrounds the user's buttocks are recessed upwards. In other words, they are notched. This makes it easier to raise and spread the legs even when the wearer body 130 is worn around the waist.

[0055] The core material 150 is housed within the central part of the body of the wearer 130 in the longitudinal direction. The core material 150 is housed in the cover fabric 144, and the cover fabric 144 is sewn to the skin-side fabric 132 between the design-side fabric 131 and the skin-side fabric 132. In this way, the core material 150 is fixed to the body of the wearer 130 so that it does not move within the body of the wearer 130.

[0056] The core material 150 is a relatively hard, thin plate material that does not have elasticity and has sufficient strength to bend by human force but is difficult to fold. The core material 150 is formed to be at least harder than the mounting body 130. In this disclosure, "hard" means that it is difficult to bend when the same force is applied in the bending direction, or that a large force in the bending direction is required to bend it by a certain amount.

[0057] Furthermore, while the core material 150 is elastic, the mounting body 130 does not necessarily have to be elastic. Alternatively, both the core material 150 and the mounting body 130 may be elastic, and the core material 150 may have a higher modulus of elasticity than the mounting body 130. In this disclosure, "having elasticity" means having flexibility that allows it to be deformed in a way that restores it to its original shape. Specifically, "having elasticity" means having flexibility that allows it to deform in response to an external force, and having the ability to return to its original shape when the external force is removed after deformation caused by the external force. In this disclosure, "original shape" is not limited to the shape that was exactly the same as before deformation caused by the external force, but also includes the shape that was approximately the same as before deformation caused by the external force.

[0058] The material of the core material 150 is not particularly limited, but for example, it may be resin. The core material 150 may be, for example, a foamed polyethylene sheet, i.e., Belpolene. Alternatively, the core material 150 may be a silicone or urethane sheet.

[0059] The core material 150, like the main body 130 of the wearer, does not have a particularly limited vertical width, but it is preferable that the vertical width of the core material 150 be relatively wide so as to be able to reliably support the lumbar spine. For example, the core material 150 may have a vertical width that is able to support the entire lumbar spine and at least a part of the pelvis (e.g., the sacrum) when the wearer 102 is worn. As an example, the maximum vertical width of the core material 150 may be 20 cm or more and 25 cm or less, assuming the average physique of an adult Japanese woman.

[0060] Notches 151 are formed on both the left and right sides of the core material 150. The notches 151 include a notch 151a that extends vertically along the periphery of the core material 150, a second notch 151b that extends inward from the lower end of the first notch 151a (towards the center in the left-right direction of the core material 150) and extends left and right to the middle portion of the core material 150 in the vertical direction, and a slit-shaped third notch 151c that extends vertically from the second notch 151b, located inside the first notch 151a.

[0061] The core material 150 is separated by the second notch 151b, leaving the upper part 152 and the lower part 153 with a constriction 154 in the center on both sides. As a result, bending and twisting of the upper part 152 and the lower part 153 of the core material 150 relative to each other is permitted within the range in which the constriction 154 can deform. This allows the core material 150 to follow movements such as bending and twisting at the waist.

[0062] As described above, the core material 150 has vertically extending slit-shaped third notches 151c formed therein, and the upper part 152 and the lower part 153 can each bend in the area between the two third notches 151c, with the outer portion of the third notches 151c being curved. This allows the core material 150 to curve along the waist, enabling it to properly press against the waist. Furthermore, the outer portion of the two third notches 151c in the upper part 152 of the core material 150 faces the electrode portion 104_2, but as described above, it can bend, allowing it to properly press against the electrode portion 104_2.

[0063] Furthermore, the wearer 102 may be configured without a core material 150. In this case, instead of having a core material 150, the central area of ​​the wearer body 130 that comes into contact with the waist when worn may have a moderate stiffness that maintains its surface shape without easily bending.

[0064] The cushion member 160 is provided in the central part of the longitudinal direction of the wearer body 130, that is, in the area where the middle of the waist makes contact when the wearer body 130 is worn. The cushion member 160 is a member that reduces the impact and pain when the back comes into contact with a chair or the like, in other words, a member that serves as a cushion. Therefore, the cushion member 160 can be made of any suitable material, for example, it may be made of silicone.

[0065] Next, the effects and benefits of the embodiment will be explained.

[0066] By tightening the main body 130 with the band 140, the contact pressure between the main body 130 and the multiple electrode parts 104 and the skin increases. Furthermore, as the band 140 overlaps the electrode parts 104 via the main body 130, the band 140 presses the electrode parts 104 against the skin, further increasing the contact pressure between the electrode parts 104 and the skin.

[0067] In this case, water is sometimes sprayed onto multiple electrode parts to wet them and stabilize the current flow between them. However, instead of spraying water, it is also possible to wet the multiple electrode parts by having the user sweat. In this case, the main body of the device needs to be made of a material with low breathability. Such materials with low breathability often have little or no elasticity, and in that case, depending on the relationship between the size of the main body of the device and the user's body shape, it is difficult to make the main body of the device fit snugly against the user, and therefore it is difficult to increase the contact pressure between the electrode parts and the skin. In contrast, according to this embodiment, the main body of the device 130 is tightened by the band 40, making the main body of the device 130 fit snugly against the user's skin and increasing the contact pressure between the multiple electrode parts 104 and the skin. In other words, this embodiment is particularly effective when the main body of the device 130 has little or no elasticity.

[0068] In addition, tightening the waist with the band 140 increases the intra-abdominal pressure, reducing the burden on the lumbar spine. Furthermore, when the main body 130 is tightened around the waist by the band 140, the core material 150 is pressed against the waist via the main body 130, fixing the lumbar spine to prevent excessive arching and reducing the burden on the lumbar spine. On the other hand, as described above, the core material 150 has a second notch 151b, allowing the upper part 152 and the lower part 153 to bend relative to each other. This allows the lumbar spine to be fixed in an ideal curved shape that follows the S-curve of the spine, further reducing the burden on the lumbar spine.

[0069] 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.

[0070] Unlike the embodiment, the first band portion 141 may have a horizontal V-shape. In this case, the same effects and advantages as when the first band portion 141 has a horizontal V-shape can be achieved. Also, unlike the embodiment, the first band portion 141 may have an I-shape, or a straight line.

[0071] Unlike the embodiment, the wearable body 102 may be configured to be attachable to the abdomen, chest, arms, legs, or other body parts. In these cases, the wearable body 102 does not need to include the core material 150.

[0072] Unlike the embodiment, the wearer 102 may have only one band. For example, the wearer 102 may have a single band that encircles the entire circumference of the wearer body 130.

[0073] In this embodiment, the mounting body 102 is configured to fasten a pair of left and right bands 140L and 140R to the mounting body 130, but it may also be configured to fasten the bands 140L and 140R to each other.

[0074] Unlike the embodiment, both the first band portions 141L, 141R and the second band portions 142L, 142R do not necessarily have to be elastic.

[0075] Any combination of the embodiments and modifications described above is also useful as an embodiment of this disclosure. The new embodiments resulting from these combinations possess the effects of both the combined embodiments and modifications.

[0076] [Aspect 1] A wearable device for electrical stimulation, A body that can be attached to a designated body part in a manner that surrounds that body part, A band, one end of which is fixed to the main body of the attachment, and a band for fastening the main body of the attachment to the body part, Equipped with, When the body attachment is attached to the body part and the band fastens the body attachment to the body part, the band overlaps, at least partially, with the electrode portion attached to the back surface of the body attachment for applying electrical stimulation to the body part via the body attachment. Wearable device.

[0077] [Aspect 2] The band has elasticity in at least a portion of its longitudinal direction. The attachment described in Embodiment 1.

[0078] [Aspect 3] The band includes a first band portion at one end and a second band portion at the other end. The first band portion is elastic, and the second band portion is not elastic. The attachment according to embodiment 1 or 2.

[0079] [Aspect 4] The band includes a first band portion at one end and a second band portion at the other end. The first band portion is V-shaped or Y-shaped. The attachment according to embodiment 1 or 2.

[0080] [Aspect 5] The first band portion is elastic, The attachment described in Embodiment 4.

[0081] [Aspect 6] The band has a band-side engaging portion on the other end, The mounting body has a body-side engaging portion at a position on the surface that overlaps with the electrode portion. When the band is extended, the band-side engaging portion and the main body-side engaging portion are engaged. The attachment described in Embodiment 2.

[0082] [Aspect 7] The aforementioned body part is the waist. The part of the body that the attachment body is attached to when it is placed on the body part is provided with a core material that is harder than the body of the attachment body. The attachment according to any one of embodiments 1 to 6.

[0083] [Aspect 8] The mounting body according to any one of claims 1 to 7, Multiple electrode portions are provided on the back surface of the aforementioned mounting body, A control device that supplies power to the plurality of electrode sections, An electrical stimulation device equipped with the following features. [Explanation of Symbols]

[0084] 100 Electrical stimulator, 102 Wearable body, 104 Electrode section, 106 Control device, 130 Wearable body main body, 130d Main body side engagement section, 140 Band, 140a Band side engagement section, 141 First band section, 142 Second band section, 150 Core material.

Claims

1. A wearable device for electrical stimulation, A body that can be attached to a designated body part in a manner that surrounds that body part, A band, one end of which is fixed to the main body of the attachment, and a band for fastening the main body of the attachment to the body part, Equipped with, When the body attachment is attached to the body part and the band fastens the body attachment to the body part, the band overlaps, at least partially, with the electrode portion attached to the back surface of the body attachment for applying electrical stimulation to the body part via the body attachment. Wearable device.

2. The band includes a first band portion at one end and a second band portion at the other end. The first band portion is elastic, and the second band portion is not elastic. The mounting body according to claim 1.

3. The first band portion is V-shaped or Y-shaped. The mounting body according to claim 2.

4. The band is elastic and has a band-side engagement portion on the other end. The mounting body has a body-side engaging portion at a position on the surface that overlaps with the electrode portion. When the band is extended, the band-side engaging portion and the main body-side engaging portion are engaged. The mounting body according to claim 1.

5. The aforementioned body part is the waist. The part of the body that the attachment body is attached to when it is placed on the body part is provided with a core material that is harder than the body of the attachment body. The mounting body according to claim 1.

6. The mounting body according to any one of claims 1 to 5, Multiple electrode portions are provided on the back surface of the aforementioned mounting body, A control device that supplies power to the plurality of electrode sections, An electrical stimulation device equipped with the following features.

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