JP7246228B2 - Adhesive pads and electrical stimulation units - Google Patents

Description

TECHNICAL FIELD The present invention relates to an adhesive pad used in an electrical stimulator.

2. Description of the Related Art Conventionally, there has been proposed an electrical stimulator for applying electrical stimulation to a user's muscles (see Patent Literature 1, for example). By using this device, electrical stimulation promotes movement accompanied by muscle contraction and relaxation. This electrostimulation device usually includes an electrode section for applying electrical stimulation.

JP 2017-153822 A

In some cases, the electrical stimulator is attached to the body via a conductive adhesive pad in order to increase the degree of fixation of the electrode part to the body. In this case, when trying to remove the electrical stimulator from the body, the adhesive pad may be peeled off from the electrode part, leaving a skin residue on the body.

SUMMARY OF THE INVENTION An aspect of the present invention has been made in view of such problems, and one of the purposes thereof is to provide a technique capable of suppressing the sticky pad from remaining on the skin.

An aspect of the present invention for solving the aforementioned problems is an adhesive pad. The adhesive pad of this aspect is an adhesive pad for conducting the electrode part of the electrical stimulator and the body, comprising an electrical stimulator adhesive surface and a body facing surface provided with a body adhesive area, the body A weak adhesive area is provided on the facing surface, and the weak adhesive area is less adhesive than the portion of the electrostimulator adhesive surface that is opposite to the weak adhesive area.

According to the above-described aspect, it is possible to suppress the sticky pad from remaining on the skin.

FIG. 1(a) is a schematic diagram showing an adhesive pad of a reference form, FIG. 1(b) is a diagram showing a state in which a peeling force is applied to the electrical stimulator, and FIG. 1(c) is FIG. 10 is a diagram showing a state in which a sticky pad has a sticky residue on the skin; Fig. 2 (a) is a schematic diagram showing the adhesive pad of the first embodiment, Fig. 2 (b) is a diagram showing a state in which peeling force is applied to the electrical stimulator, Fig. 2 (c ) is a diagram showing a state in which the adhesive pad is being peeled off from the body. It is explanatory drawing which shows the use condition of the electrical stimulation unit of 1st Embodiment. It is a back view of the electrical stimulator of 1st Embodiment. It is a side cross-sectional view of the adhesive pad of the first embodiment. It is the figure which looked at the adhesive pad from the arrow A of FIG. It is the figure which looked at the adhesive pad from the arrow B of FIG. FIG. 3 is a side cross-sectional view of a pad unit using the adhesive pad of the first embodiment; FIG. 9 is a view of the pad unit viewed from arrow C in FIG. 8 ; It is side sectional drawing of the adhesive pad of 2nd Embodiment. It is the figure which looked at the adhesive pad from the arrow E of FIG.

Hereinafter, in the embodiments and modified examples, the same constituent elements are denoted by the same reference numerals, and overlapping descriptions are omitted. In each drawing, for convenience of explanation, some of the constituent elements are omitted as appropriate, and the dimensions of the constituent elements are shown enlarged or reduced as appropriate. The drawings should be viewed according to the orientation of the symbols.

(First embodiment)
The background that led to the idea of the adhesive pad of the first embodiment will be described. FIG. 1(a) is a schematic diagram showing an adhesive pad 100 of a reference form. The adhesive pad 100 has an electrostimulator adhesive surface 102 that forms the entire area of one major surface, and a body adhesive area 104 that forms the entire area of the other major surface. Hereinafter, the electrical stimulator adhesive surface is simply referred to as the device adhesive surface. The device adhesive surface 102 is attached to the electrode portion 20 of the electrical stimulation device 14, and the body adhesive area 104 is attached to the body B. FIG. The device adhesive surface 102 and the body adhesive area 104 are composed of a conductive adhesive 106 and have the same adhesive force.

FIG.1(b) is a figure which shows the state which is giving the peeling force Fa to the electrical stimulator 14. FIG. When the adhesive pad 100 is to be peeled off from the body B, the peeling force Fa is transmitted from the electrical stimulator 14 to the peeling force receiving portion 100a, which is part of the adhesive pad 100. Thereby, the peeling force Fa is applied to the peeling force receiving portion 100a so as to peel off the body adhesive region 104 of the adhesive pad 100 from the body B. As shown in FIG. At this time, the peeling force Fa is applied to a part 14a of the electrical stimulator 14 to the same extent so that the electrical stimulator 14 is peeled off from the device adhesive surface 102 of the adhesive pad 100 . Here, an example is shown in which the peeling force Fa is applied so that the outer edge of the adhesive pad 100 becomes the peeling force receiving portion 100a.

Here, as described above, the device adhesive surface 102 and the body adhesive area 104 of the adhesive pad 100 have the same adhesive force. Therefore, when the peeling force Fa is applied in this way, in the peeling force receiving portion 100a of the adhesive pad 100, in addition to the interface between the body adhesive region 104 and the body B, the device adhesive surface 102 and the electrical stimulation device 14 The interface can also be the origin of delamination. For this reason, as shown in FIG. 1(c), in the peeling force receiving portion 100a of the adhesive pad 100, the body adhesive area 104 does not peel off from the body B, and the device adhesive surface 102 of the electrical stimulator 14 A situation may occur in which the portion 14a is peeled off. If the peeling of the device adhesive surface 102 from the electrical stimulation device 14 progresses in this state, a skin residue in which the adhesive pad 100 remains on the body B occurs.

Fig.2 (a) is a schematic diagram which shows the adhesive pad 10 of 1st Embodiment. As a countermeasure for the above problem, the adhesive pad 10 of the present embodiment is provided with a weak adhesive region 38 on the body facing surface 34 (described later) of the adhesive pad 10, and the device adhesive on the opposite side of the weak adhesive region 38 is provided. The adhesive strength of the weak adhesive area 38 is weakened from the portion of the surface 32 .

FIG. 2(b) is a diagram showing a state in which a peeling force Fa is applied to the electrical stimulator 14. As shown in FIG. The adhesive pad 10 of this embodiment is provided with a peeling force Fa to the electrical stimulator 14 so that the peeling force receiving portion 10a overlaps the weakly adhesive region 38 in the thickness direction Z. As shown in FIG. Thereby, the peeling force Fa is applied to the peeling force receiving portion 10a so as to peel the weak adhesive region 38 from the body B. As shown in FIG. At this time, the peeling force Fa is applied to the part 14a of the electrical stimulation device 14 at the same position on the opposite side of the weak adhesive region 38 so that the electrical stimulation device 14 is peeled off from the device adhesive surface 32 of the adhesive pad 10. given to an extent.

Here, the weak adhesive area 38 has a weaker adhesive force than a portion of the device adhesive surface 32 on the opposite side of the weak adhesive area 38 . Therefore, when the peeling force Fa is applied in this way, the interface between the weakly adhesive region 38 and the body B is positioned at the peeling force receiving portion 10a of the adhesive pad 10 rather than the interface between the electrical stimulation device 14 and the device adhesive surface 32. It becomes easy to peel off as a starting point (see FIG. 2(c)). As a result, the electrical stimulation device 14 can be prevented from being peeled off from the device adhesive surface 32 of the adhesive pad 10, and the adhesive pad 10 can be prevented from remaining on the skin.

Below, the details of the adhesive pad 10 made under such a background will be described. FIG. 3 is an explanatory diagram showing the state of use of the electrical stimulation unit 12 in which the adhesive pad 10 of the embodiment is used. The electrical stimulation unit 12 comprises an electrical stimulator 14 and a control unit 16 for controlling the electrical stimulator 14 .

FIG. 4 is a back view of the electrical stimulator 14. FIG. The electrical stimulation device 14 of this embodiment is an electrical stimulation device that applies electrical stimulation to the user's muscles. The electrical stimulation device 14 includes a body portion 18 attached to the body B via the adhesive pad 10 and an electrode portion 20 provided on the body portion 18 .

The body portion 18 of the present embodiment is a flexible planar structure. The body portion 18 of the present embodiment is made of elastomer such as silicon. Hereinafter, unless otherwise specified, the description will be based on the state in which the main body portion 18 is expanded in a plane.

The electrode portion 20 is provided on the back surface portion of the body portion 18 facing the body. In this embodiment, six electrode portions 20 are provided on the body portion 18 . The electrode portion 20 of this embodiment is formed integrally with the body portion 18 . The electrode portion 20 of the present embodiment is formed by printing conductive ink such as silver paste on the back surface portion of the body portion 18 .

The electrical stimulation unit 12 includes a wiring section 22 that electrically connects the electrode section 20 and the control unit 16 . The wiring portion 22 of this embodiment is formed integrally with the main body portion 18 . The wiring portion 22 of the present embodiment is also formed by printing conductive ink such as silver paste on the back surface portion of the main body portion 18 .

The control unit 16 is configured by housing a combination of CPU, RAM, ROM, etc. in a housing. The control unit 16 of this embodiment is integrated with the body portion 18 of the electrical stimulator 14 and is detachably provided on the body portion 18 . The control unit 16 operates using power supplied from a power supply section (not shown). The power source may be an external power source or a battery such as a primary battery or a secondary battery.

The control unit 16 performs signal control for controlling output signals output to the body through the plurality of electrode units 20 when a predetermined control start condition is satisfied through operation of an operation unit (not shown). The output signal of the present embodiment is a stimulation signal that is energized to the body for application of electrical stimulation. In the signal control of the present embodiment, AC voltage is applied as stimulation signals to the plurality of electrode units 20 at a preset operation time (eg, 10 minutes) and a preset frequency (eg, 20 Hz). As a result, the output signal is output using the user's body as an energization path. In the present embodiment, the stimulus signal (output signal) flowing on the current-carrying path prompts the muscles on the current-carrying path to exercise.

The adhesive pad 10 attaches the body portion 18 of the electrical stimulation device 14 to the body B, and conducts the electrode portion 20 and the body B (see also FIG. 2(a)). The adhesive pads 10 are individually provided corresponding to the respective electrode portions 20, and the corresponding electrode portions 20 and the body B are electrically connected. Hereinafter, the adhesive pad 10 corresponding to one electrode portion 20 will be described, but the other adhesive pads 10 have the same configuration.

5 is a side cross-sectional view of the adhesive pad 10, FIG. 6 is a view of the adhesive pad 10 as viewed from arrow A in FIG. 5, and FIG. 7 is a view of the adhesive pad 10 from arrow B in FIG. It is a view.

The adhesive pad 10 has a sheet shape as a whole. The adhesive pad 10 of the present embodiment has a shape in which virtual rectangles having a first side La and a second side Lb adjacent to each other circumscribe when viewed from the thickness direction Z thereof. "Viewing from the thickness direction Z" has the same meaning as viewing from the viewpoint of FIGS. In this embodiment, a rectangular shape is formed in which the first side La is the long side and the second side Lb is the short side. Hereinafter, the first side direction along the first side La will be referred to as the long side direction X (first direction), and the second side direction along the second side Lb will be referred to as the short side direction Y (second direction). The long-side direction X and the short-side direction Y are two directions that are orthogonal to the thickness direction Z of the adhesive pad 10 and are orthogonal to each other.

The adhesive pad 10 includes a conductive sheet-like adhesive body 30, a device adhesive surface 32 (electric stimulation device adhesive surface) provided on one main surface of the adhesive pad 10, and a body provided on the other main surface. and a facing surface 34 . The principal surfaces here refer to both sides in the thickness direction Z of the object being referred to (here, the adhesive pad 10).

The adhesive 30 has electrical conductivity. The adhesive 30 electrically connects the electrode portion 20 corresponding to the adhesive pad 10 and the body B. As shown in FIG. The viscous body 30 of this embodiment is composed of viscous gel. For this, for example, "Techngel (registered trademark)" manufactured by Sekisui Plastics Co., Ltd., model number SR-RA240/100 is used.

The device adhesive surface 32 is provided to face the electrode section 20 of the electrical stimulation device 14 when the electrical stimulation device 14 is attached to the body B. The device adhesive surface 32 is detachably attached to the electrode portion 20 (see also FIG. 2(a)). One main surface of the adhesive pad 10 itself constitutes the device adhesive surface 32 . The device adhesive surface 32 of this embodiment is provided over the entire main surface of the adhesive 30 .

The body facing surface 34 is provided to face the body B when the electrical stimulation device 14 is attached to the body B. As shown in FIG. The body facing surface 34 is constituted by the other main surface of the adhesive pad 10 itself. The body facing surface 34 is provided with a body adhesive area 36 that is detachably attached to the body B. As shown in FIG. The body adhesive region 36 is part of the other main surface of the adhesive 30 itself. Body adhesive area 36 has substantially the same adhesive strength as device adhesive surface 32 . The term "substantially" as used herein includes not only the case where the stated conditions are literally satisfied, but also the case where they are substantially satisfied.

A weak adhesive area 38 is provided on the body facing surface 34 . Due to differences in structure and materials, the weak adhesive region 38 has a weaker adhesive force than the part 32b of the device adhesive surface 32 on the opposite side of the weak adhesive region 38 . In this specification, the term “front and back opposite sides” refers to a position where the front and back of the adhesive pad 10 overlap when viewed from the thickness direction Z of the adhesive pad 10 . In other words, the weak adhesive region 38 has a weaker adhesive force than the portion 32b of the device adhesive surface 32 that overlaps the weak adhesive region 38 in the thickness direction Z. As shown in FIG.

Here, "weak adhesive force" means weak adhesive force per unit area [N/cm ² ]. The weak adhesive region 38 of the present embodiment is configured by a sheet body 40 that is separate from the adhesive body 30 . The sheet body 40 of this embodiment has non-adhesive properties, and the weakly adhesive regions 38 formed by the sheet body 40 also have non-adhesive properties. The term "non-adhesive" as used herein includes not only the state of having no adhesive strength at all, but also the state of weakened adhesive strength to such an extent that it cannot be stuck. The weak adhesive region 38 is made up of such a sheet body 40 and has a weaker adhesive force than the device adhesive surface 32 due to the difference in structure. Further, the weak adhesive region 38 of the present embodiment has weaker adhesive force than the body adhesive region 36 .

The sheet body 40 is integrated with the cohesive body 30 by being attached to the main surface of the cohesive body 30 . The sheet body 40 of this embodiment has a thickness dimension smaller than the thickness dimension of the viscous body 30 in a non-elastic deformation state. When the body adhesive region 36 is attached to the body B, a portion 30c of the adhesive body 30 to which the sheet body 40 is attached is compressed and deformed from a portion 30b of the adhesive body 30 where the body adhesive region 36 is provided, and body adhesiveness is achieved. A region 36 is attached to the body B (see FIG. 2(a)).

The outer end surface 40a of the sheet body 40 is provided at a position aligned with the outer end surface 30d of the viscous body 30 in directions (the long-side direction X and the short-side direction Y) orthogonal to the thickness direction Z. As a result, the sheet body 40 does not protrude from the outer end surface 30 d of the adhesive body 30 . Along with this, it becomes difficult to apply a force to the sheet body 40 to separate it from the viscous body 30 , and the sheet body 40 can be made difficult to separate from the viscous body 30 .

The weak adhesive region 38 of this embodiment is provided at least on the outer edge portion 34a of the body facing surface 34 . The weak adhesive region 38 of the present embodiment includes one end 34b in the long side direction X of the body facing surface 34 and the other end in the long side direction X as a portion including the outer edge 34a of the body facing surface 34. 34c are provided separately.

The weak adhesive regions 38 of the present embodiment are the first portions 42 provided at the ends 34b and 34c of the body facing surface 34 in the long side direction X and extending in the short side direction Y, and the short side direction Y of the first portions 42. and a second portion 44 extending in the long side direction X from the end of the . The second portions 44 are individually provided corresponding to both ends in the short side direction Y of the first portion 42 and extend in the long side direction X from the respective ends. The second portion 44 has an outer side portion 44a provided outside in the short side direction Y and an inner side portion 44b provided on the opposite side in the short side direction Y to the outer side portion Y. As shown in FIG. The inner side portion 44b of the second portion 44 is provided so as to approach the outer side portion 44a as it separates in the long side direction X from the first portion 42 .

Such a body adhesive region 36 is arranged such that the size in the short side direction Y increases from one end in the long side direction X of the body facing surface 34 toward the other end in the long side direction X. Configured. In this embodiment, the one end region 36a of the body adhesive region 36 in the long side direction X extends from one end 34b (one end) of the body facing surface 34 toward the other end 34c (the other end). It is configured to satisfy this condition. Further, in the present embodiment, the other end region 36b in the long side direction X of the body adhesive region 36 extends from the other end 34c (one end) of the body facing surface 34 to the one end 34b (the other end). As we go along, we are configured to meet this condition. The body adhesive region 36 of this embodiment is configured such that the size in the short side direction Y increases continuously toward the other end of the adhesive pad 10 .

Edges of the sheet body 40 form four corners 40b and 40c. The four corners 40b and 40c are provided with two first corners 40b forming one end in the long-side direction X and an end in the short-side direction Y, and the other end in the long-side direction X and short and two second corners 40c forming ends in the side direction Y. As shown in FIG. The second corner portion 40c is formed by the outer side portion 44a and the inner side portion 44b of the second portion 44 . Each of the four corners 40b and 40c of this embodiment has an outwardly convex arc shape.

A method for peeling off the adhesive pad 10 will be described. Please refer to FIG. When peeling the adhesive pad 10 from the body B, as described above, the peeling force Fa is applied to the electrical stimulator 14 so that the peeling force receiving portion 10a overlaps the weakly adhesive region 38 of the adhesive pad 10 in the thickness direction Z. do. In order to realize this, the body part 18 of the electrical stimulator 14 may be manually moved by pulling it away from the body B so as to turn over. In addition to this, the body part 18 of the electrical stimulator 14 may be moved so as to separate in the normal direction of the skin surface of the body B. At this time, the main body 18 of the electrostimulation device 14 may be manually moved while being held, or may be mechanically moved using an external force imparting mechanism such as a spring.

By the above movement, when peeling starts from the interface between the weak adhesive region 38 and the body B, the peeling force Fa is continuously applied to the main body 18 of the electrical stimulation device 14 so that the peeling progresses, and the adhesive pad The entire body-facing surface 34 of 10 is peeled off from the body B.

The effects of the adhesive pad 10 described above will be described.

(A) A weak adhesive region 38 is provided on the body facing surface 34 of the adhesive pad 10 . Therefore, as described above, the electrical stimulation device 14 can be prevented from being peeled off from the device adhesive surface 32 of the adhesive pad 10, and the adhesive pad 10 can be prevented from remaining on the skin.

(B) The weak adhesive region 38 of the adhesive pad 10 is provided at least on the outer edge portion 34 a of the body facing surface 34 . Therefore, the peeling force Fa can be applied so that the outer edge of the adhesive pad 10 serves as the peeling force receiving portion 10a by moving the body portion 18 of the electrical stimulation device 14 away from the body B so as to turn over. Along with this, the peeling force Fa can also be applied to the weak adhesive region 38 on the outer edge 34a of the body facing surface 34, and the adhesive pad 10 can be peeled off from the body B together with the electrical stimulator 14 by a simple movement.

The weak adhesive region 38 of the adhesive pad 10 is composed of a sheet body 40 separate from the adhesive body 30 . Therefore, the weak adhesion region 38 can be easily configured by simply adhering the sheet body 40 to the adhesive body 30 .

Corners 40b and 40c formed by edges of the sheet body 40 are arcuate. Therefore, when the sheet body 40 is provided on the body facing surface 34, the corners 40b and 40c can be softer in contact with the body B than when the corners 40b and 40c are pointed.

(C) The weak adhesive regions 38 of the adhesive pad 10 are provided at both ends 34b and 34c of the body-facing surface 34. As shown in FIG. Therefore, the adhesive pad 10 can be easily peeled off from the body B regardless of which of the two end portions 34b and 34c of the body-facing surface 34 is given the peeling force.

When peeling the adhesive pad 10 from the body, peeling progresses while changing the boundary position 50 (see FIG. 2(c)) between the peeled area and the unpeeled area. When this boundary position 50 reaches the body-adhesive region 36 having a greater adhesive strength than the weak-adhesive region 38, the peel force to be applied therefrom increases.

(D) Here, in the present embodiment, the body adhesive region 36 is configured such that the size in the short side direction Y increases from one end of the adhesive pad 10 toward the other end. . Therefore, when peeling from one end of the body-facing surface 34 toward the other end, the force required for the peeling gradually increases. Therefore, the body adhesive region 36 can be easily peeled off with a light force at first.

Next, a pad unit 60 using the adhesive pad 10 will be described. 8 is a side cross-sectional view of the pad unit 60 of this embodiment, and FIG. 9 is a view of the pad unit 60 viewed from arrow C in FIG. The pad unit 60 is used when carrying the adhesive pad 10 or the like. The pad unit 60 includes the adhesive pad 10, a first release sheet 62 covering the device adhesive surface 32 thereof, and a second release sheet 64 covering the body facing surface 34 thereof.

The first release sheet 62 has a role of protecting the adhesive surface 32 of the device. The first release sheet 62 is integrated by being attached to the adhesive surface 32 of the device. The second release sheet 64 has a role of protecting the weak adhesive area 38 and the body adhesive area 36 of the body facing surface 34 . The second release sheet 64 is integrated by being attached to the body adhesive area 36 . The first release sheet 62 and the second release sheet 64 are made of, for example, a non-adhesive material such as PET resin.

The adhesive body 30 is compressed and deformed at a portion 30c where the sheet body 40 is adhered from a portion 30b where the body adhesive region 36 is provided. In this state, the body adhesive area 36 is attached to the second release sheet 64 .

The second release sheet 64 covers, in addition to the body adhesive region 36 , the weak adhesive region 38 having weaker adhesive force than the body adhesive region 36 . Therefore, by applying a force for peeling the second release sheet 64 from the body adhesive area 36 to a portion facing the weak adhesive area 38 of the second release sheet 64, the body facing surface 34 of the adhesive pad 10 can be removed from the body facing surface 34. 2 It becomes easier to separate the release sheet 64 . Accordingly, the second release sheet 64 can be easily peeled off from the body adhesive area 36 .

(Second embodiment)
10 is a side cross-sectional view of the adhesive pad 10 of the second embodiment, and FIG. 11 is a view of the adhesive pad 10 viewed from arrow E in FIG. The adhesive pad 10 of this embodiment differs from that of the first embodiment in the weak adhesive region 38 .

The weak adhesive region 38 of this embodiment is configured by forming a plurality of cuts 70 on the surface (main surface) of the adhesive 30 . The cut surface 70 has a groove shape with a bottom portion in the thickness direction Z, and does not penetrate the adhesive body 30 in the thickness direction Z. As shown in FIG. In this embodiment, the plurality of cuts 70 are in a grid pattern, but they may be in a striped pattern or the like. The weak adhesive region 38 configured in this manner has a smaller adhesive force per unit area than the body adhesive region 36 .

The effects (A) to (D) described above can also be obtained with the adhesive pad 10 of the present embodiment. Further, according to the present embodiment, the weak adhesion region 38 can be easily formed by simply forming a plurality of cuts 70 on the main surface of the adhesion body 30 .

As described above, the weak adhesive region 38 may have a weaker adhesive force per unit area than the device adhesive surface 32, and its specific example is not particularly limited. For example, the weak adhesive region 38 may be configured using a material having weaker adhesive strength than the adhesive 30 forming the device adhesive surface 32 . Further, a specific example of the weakly adhesive region 38 having non-adhesiveness is not particularly limited. For example, it may be composed of a non-adhesive material coated on the surface of the adherent 30 .

The present invention has been described above based on the embodiments. Next, modified examples of each component will be described.

Although an example in which the control unit 16 is integrated with the electrical stimulator 14 has been described, the control unit 16 may be arranged separately from the electrical stimulator 14 .

The place where the main body 18 is attached to the body is not particularly limited. For example, body portion 18 may be attached to any of the user's limbs, trunk and head. The shape of the body portion 18 is not particularly limited. For example, body portion 18 may be belt-shaped. Also, the material of the body portion 18 is not particularly limited, and other than elastomer, for example, fabric or the like may be used.

The electrode portion 20 may be provided separately from the body portion 18 . In this case, the electrode section 20 may be detachably provided on the main body section 18 .

The wiring portion 22 may be provided separately from the main body portion 18 .

The adhesive pad 10 is not particularly limited as long as it has a sheet shape, and the shape of the adhesive pad 10 when viewed from the thickness direction Z is not particularly limited.

The position where the weak adhesive region 38 of the adhesive pad 10 is provided is not particularly limited. For example, it may be provided only in a portion inside the outer edge portion 32a of the body-facing surface 34 .

Although the weak adhesive region 38 has weaker adhesive strength than the body adhesive region 36 has been described, it may have the same adhesive strength as the body adhesive region 36 .

In order to obtain the effect of (D), for example, the size of the body adhesive region 36 in the short side direction Y is configured to increase stepwise from one end of the adhesive pad 10 toward the other end. may be

The corners 40b and 40c of the sheet body 40 may be pointed.

The embodiments and modifications of the present invention have been described in detail above. All of the above-described embodiments and modifications merely show specific examples for carrying out the present invention. The contents of the embodiments and modifications do not limit the technical scope of the present invention, and many design changes such as alterations, additions, and deletions of constituent elements are possible without departing from the spirit of the invention. In the above-described embodiment, the content that allows such design changes is emphasized by adding notations such as "of the embodiment" and "in the embodiment", but even contents without such notations can be designed. Changes are allowed. Any combination of the above components is also effective as an aspect of the present invention. The hatching attached to the cross section of the drawing does not limit the material of the hatched object.

DESCRIPTION OF SYMBOLS 10... Adhesive pad, 12... Electric stimulation unit, 14... Electric stimulation apparatus, 20... Electrode part, 30... Adhesive body, 32... Electric stimulation apparatus adhesive surface, 32a... Outer edge part, 34... Body facing surface, 34a... Outer edge part , 36... body adhesive area, 38... weak adhesive area, 40... sheet body, 40b... corner portion.

Claims (4)

An adhesive pad for conducting the electrode part of the electric stimulator and the body,
an electrical stimulator adhesive surface;
a body facing surface provided with a body adhesive area,
A weak adhesive region is provided on the body-facing surface,
The weak adhesive area has a weaker adhesive force than a portion of the electrical stimulator adhesive surface on the opposite side of the weak adhesive area,
The weak adhesive region is provided on at least part of an end of the adhesive pad,
The weak adhesion region is configured by forming a plurality of cuts on the surface of the adherence body itself ,
An adhesive pad in which a plurality of cuts are not formed in a part of the adhesive surface of the electrostimulator on the opposite side of the weak adhesive area. The adhesive pad according to claim 1, wherein the weak adhesive area is provided at least on the outer edge of the body-facing surface. When two directions that are perpendicular to the thickness direction of the adhesive pad and are perpendicular to each other are defined as a first direction and a second direction,
The weak adhesive region is provided at one end of the body-facing surface in the first direction,
3. Any one of claims 1 and 2 , wherein the body adhesive area is configured to increase in size in the second direction from the one end toward the other end in the first direction. Adhesive pads as described. The adhesive pad according to any one of claims 1 to 3 ;
an electrical stimulator to which the electrical stimulator adhesive surface of the adhesive pad is attached.

Images