JP3177763B2 - Electrode material - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrode material which is used by being adhered to a human body as a conductor for a low frequency treatment device or the like.

[0002]

2. Description of the Related Art As an electrode material to be attached to a human body of this kind,
The present applicant has already proposed a device having a structure as shown in FIG. 9 (Japanese Utility Model Application No. Hei 4-91985).

The electrode material is attached to a corner portion of a base sheet 102 provided with a conductive layer 101 on a lower surface by projecting a convex terminal 103 in contact with the conductive layer 101 upward from the base sheet. The non-adhesive layer 104 is laminated on the lower surface of the corner where the terminal is attached, and the conductive adhesive layer 105 is laminated on the entire lower surface of the other portion of the base sheet 102.

[0004]

The electrode material having the above structure is as follows.
The corner where the non-adhesive layer 104 is laminated is a so-called "turnover"
Therefore, the electrode material can be easily peeled from the human body by pinching the corner with a fingertip. However, since the convex electrode 103 is attached to this corner,
When the electrode material is peeled off, the fingertip hits the convex electrode 103,
In many cases, the convex electrode 103 is pinched, and thus, during repeated use, there is a possibility that distortion or rattling may occur at the mounting position of the convex electrode 103 and cause a poor contact between the convex electrode 103 and the conductive layer 101. there were.

Moreover, in the above-mentioned electrode material, since the boundary line L between the non-adhesive layer 104 and the conductive adhesive layer 105 is a straight line obliquely crossing the corner, the corner provided with the non-adhesive layer 104 is pinched from the human body. At the time of peeling, as shown by a chain line in FIG.
Is bent at the boundary line L, and there is a problem that the substrate sheet 102 and the conductive layer 101 are easily broken at the boundary line L while repeating attachment and detachment of the electrode material to the human body.

The present invention has been made in view of these problems, and an object of the present invention is to make it possible to easily peel the terminal from the human body without rattling or the like at the mounting position of the convex terminal even when used repeatedly. It is desirable to provide an electrode material in which the base sheet and the conductive layer are not broken at the boundary between the non-adhesive layer and the conductive adhesive layer.

[0007]

In order to achieve the above object, an electrode material according to the present invention comprises a base sheet provided with a conductive layer on a lower surface, and a convex terminal in contact with the conductive layer formed on the base sheet above the base sheet. A non-adhesive layer is laminated on a part of the lower surface of the base sheet excluding the terminal mounting part so that its end is exposed on the entire periphery or a part of the base sheet to form a winding allowance. In addition, a conductive adhesive layer is laminated on the lower surface of the base sheet excluding the non-adhesive layer laminated portion. Desirably, the boundary between the non-adhesive layer and the conductive adhesive layer is a non-linear boundary, and the width of the non-adhesive layer is maximized at the exposed end.

[0008]

The electrode material of the present invention is adhered to the human body by the adhesive force of the conductive adhesive layer, but the non-adhesive layer is laminated so that its end is exposed on the entire periphery of the base material sheet or a part thereof. The part of the turning margin formed is not attached to the human body. Therefore, by inserting a fingertip from the entire periphery or a part of the base sheet where the non-adhesive layer is exposed, and picking up the turning margin,
The electrode material can be easily peeled off from the human body.

In addition, since the turnover is formed at a position distant from the convex terminal by laminating a non-adhesive layer on a part of the lower surface of the base sheet excluding the terminal attaching portion, the turnover is reduced. The fingertip does not hit the convex terminal when the electrode material is peeled off from the human body, and the convex terminal is not pinched together with the turning margin. Therefore, even if the electrode material is repeatedly adhered to and peeled from the human body, distortion or rattling does not occur at the mounting position of the convex electrode, and there is no fear of causing poor contact between the convex terminal and the conductive layer.

In the case of an electrode material having a non-linear boundary line between the non-adhesive layer and the conductive adhesive layer, when the turnover is picked up and the electrode material is peeled off, the base sheet or the conductive layer on the lower surface thereof is removed. Since the electrode material can be peeled off in a curved state without being bent at the boundary line, there is a concern that the base material sheet or conductive layer will break at the boundary line portion while repeatedly attaching and detaching the electrode material to the human body Is also gone. Further, in the electrode material in which the width of the non-adhesive layer is maximized at the exposed end portion, the fingertip can be easily inserted between the human body when pinching the turning margin, so that the electrode material can be more easily peeled off.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view showing an embodiment of the electrode material of the present invention, FIG. 2 is a sectional view thereof, and FIG. 3 is a bottom view thereof.

1 to 3, reference numeral 1 denotes a conductive layer 1 on the lower surface.
a base material sheet having a terminal insertion hole 1b formed in the center of the base material sheet 1;
Is installed. The shape of the base sheet 1 is not limited to a square, but may be a desired shape such as a rectangle, an ellipse, an oval, and a circle. Further, the position of the terminal insertion hole 1b is not limited to the center of the base sheet 1 but can be formed at a desired position.

The base sheet 1 has a thickness of 20 to 250
It is made of synthetic resin sheet (including film) of about μm, for example, polyethylene terephthalate (PET)
For example, a polyester sheet such as a polyester sheet, a flexible polyurethane sheet, or the like is preferably used. In particular, 30-350k
A thickness of 50 to 200 μm having an elastic modulus of about g / cm ²
Colored and opaque polyurethane sheet, which has been subjected to antioxidant treatment to prevent yellowing, has excellent flexibility and moderate flexibility, so the skin moves when applied to the skin at the bent part of the human body It does not peel off from the skin easily enough, and it does not yellow, so there is a feeling of cleanliness,
This is very preferable as the base sheet 1.

The conductive layer 1a is desirably formed of a non-corrosive conductive material. For example, it is preferable that the conductive layer 1a is formed of a resin paint, film, ink, or the like mixed with carbon powder or graphite powder. The conductive layer 1a may be formed on the entire lower surface of the base sheet 1 or may be formed in a desired pattern shape, but in any case, it is practically necessary to have a surface resistance of 500Ω or less. Especially 5
The conductive layer 1a having a surface resistance of about 50 Ω is preferable.

A convex terminal 2 having a flange 2a formed at the lower end is inserted into the terminal insertion hole 1b of the base sheet 1 from below.
A substantially spherical terminal head 2 b protrudes above the base sheet 1. The flange 2a at the lower end of the terminal is engaged with and electrically connected to the conductive layer 1a around the terminal insertion hole 1b, and is mounted so that the convex terminal 2 does not come out of the terminal insertion hole 1b. . The protruding terminal 2 may be made of metal or conductive non-metal, but is required to have a small electric resistance of 1Ω or less in practical use. Further, the shape of the head 2b of the convex terminal 2 may not be substantially spherical,
When it is substantially spherical, it becomes easy to insert the convex terminal 2 into the terminal insertion hole 1b, and it is easy to insert and connect the tip of the lead cord of a low-frequency treatment device or the like to the connector.

The lower end of the convex terminal 2 on which the flange 2a is formed is covered with a coating material 6 made of a resin film or the like having excellent electrical insulation and water impermeability. The coating material 6 prevents current from flowing directly from the lower end of the convex terminal 2 to the human body and also prevents the convex terminal 2 from being corroded by moisture or ionic compounds contained in the conductive adhesive layer 4. And is attached with an appropriate adhesive or the like.

Further, a non-adhesive layer 3 having a semi-elliptical planar shape is laminated on a part of the lower surface of the base sheet 1 excluding the terminal mounting portion via an adhesive or the like. This non-adhesive layer 3
Are laminated in order to form a turning margin A, and the end thereof is exposed at one side end (the left end in FIGS. 2 and 3) which is a part of the outer peripheral edge of the base sheet 1. Then, a conductive adhesive layer 4 is laminated on the entire lower surface of the base sheet 1 except for the laminated portion of the non-adhesive layer 3, and a boundary line L between the conductive adhesive layer 4 and the non-adhesive layer 3 is non-linear. It has a substantially U-shaped boundary.

The planar size of the non-adhesive layer 3 forming the turning margin A is substantially the same as the size of the fingertip, that is, the depth is 5 mm or more, preferably 5 to 20 mm, and the width is 10 mm or more. Preferably, it is good to be about 10 to 20 mm. When the depth dimension of the non-adhesive layer 3 is smaller than 5 mm and the width dimension is smaller than 10 mm, when the electrode material stuck on the human body is peeled off, the fingertip hardly enters between the non-adhesive layer 3 and the human body, so that the turning allowance A is reduced. When the depth dimension and the width dimension are larger than 20 mm, the area occupied by the conductive adhesive layer 4 is greatly reduced, so that the treatment area is reduced and the adhesive strength to the human body is reduced. Inconvenience occurs.

The thickness of the non-adhesive layer 3 and the conductive adhesive layer 4 is suitably about 1 to 3 mm.
It is desirable to make the thickness of the conductive adhesive layer 4 thinner. When the non-adhesive layer 3 is made thinner than the conductive adhesive layer 4 in this manner, the conductive adhesive layer 4 can be brought into close contact with the human body when the electrode material is attached to the human body, since the non-adhesive layer 3 does not hit the human body. Moreover, when the electrode material is peeled off, since there is a gap between the non-adhesive layer 3 and the human body, it is possible to easily insert the fingertip and pick up the winding margin A.

Further, on the upper surface of the base sheet 1, a turnover A
It is desirable to provide a display or mark (not shown) indicating the position of the image by means such as printing. Such a display or mark is convenient because the position of the turning allowance A can be immediately determined.

The non-adhesive layer 3 may be made of any material as long as it has a suitable flexibility and does not adhere to the human body. For example, a soft synthetic resin foam, a soft synthetic resin film, a nonwoven fabric, a woven fabric, Alternatively, a laminate thereof is used.

The conductive adhesive layer 4 is formed of a hydrogel such as polyhydroxyethyl methacrylate containing an ionic compound (eg, sodium chloride, lithium perchlorate, potassium chloride, lithium chloride, etc.) or an ionic compound. It is made of polyurethane gel etc.
What adjusted the content of an ionic compound so that the electric resistance might be about 0.5-200 k (ohm) * cm is used. In particular, polyurethane gel has good adhesive strength, so it can be firmly adhered to the skin of the human body.Moreover, since it does not contain monomers that irritate the skin, there is no risk of causing skin irritation, etc.It is also colorless, transparent and clean. Therefore, it is most suitable as an adhesive for forming the conductive adhesive layer 4. Such a polyurethane gel is prepared by reacting a polyol having an alkylene oxide chain with a polyurethane polyisocyanate prepolymer having an alkylene oxide chain, or a polyurethane polyol prepolymer having an alkylene oxide chain and a polyurethane polyisocyanate prepolymer having an alkylene oxide chain. Obtained by reacting a polymer.

The non-adhesive layer 3 and the conductive adhesive layer 4
A release film 5 is superimposed on the lower surface of the as required.

In the electrode material having the above structure, the head 2b of the convex terminal 2 protruding from the base sheet 1 is inserted and connected to a connector at the tip of a conductor cord of a low-frequency treatment device or the like, and the conductive adhesive layer is formed. It is used by sticking it to the human body with the adhesive force of 4. And
When the power of the treatment device is turned on, a low-frequency minute current supplied through the conductor cord flows from the convex terminal 2 to the human body through the conductive layer 1a and the conductive adhesive layer 4, thereby performing low-frequency treatment of muscles and circulatory system. Done. At this time, since the lower end of the convex terminal 2 is covered with the electrically insulating covering material 6, the current directly below the terminal from the terminal to the human body is cut off, and there is no fear of receiving unpleasant electrical stimulation due to the current directly below.

When the low-frequency treatment is completed, the electrode material can be easily peeled off by inserting a fingertip between the non-adhesive layer 3 and the human body and picking up the turning margin A. At this time, since the turnover A is formed at a position away from the terminal mounting portion, the fingertip does not hit the convex terminal 2 and the convex terminal 2 is not pinched together with the turnover A. Therefore, even if the electrode material is repeatedly attached to and detached from the human body, distortion or rattling does not occur at the mounting position of the convex electrode 2, so that there is no fear of causing poor contact between the convex terminal 2 and the conductive layer 1a. Absent. Moreover, since the boundary line L between the non-adhesive layer 3 and the conductive adhesive layer 4 has a substantially U-shape and is not a straight line crossing the electrode material, the electrode material can be turned up by pinching the winding allowance A with a fingertip. As shown by a dashed line in FIG. 3, the conductive adhesive layer 4 is gradually peeled from the peripheral portion in a substantially C-shape, and the electrode material curves upward, and at the boundary line L, the base sheet 1 and the conductive layer 1 a Peeled off without bending. Therefore, even if the attachment and detachment of the electrode material to the human body are repeated, the base sheet 1
There is no fear that the conductive layer 1a is broken at the boundary line L.

In the same manner, when the release film 5 described above is overlaid, the electrode material can be easily peeled off the release film 5 by pinching the turnover A and pasted on the human body.

FIG. 4 is a bottom view showing another embodiment of the electrode material of the present invention, FIGS. 5 and 6 are bottom views and sectional views showing still another embodiment of the electrode material of the present invention, and FIG. It is a bottom view which shows another Example of a material.

In the electrode material illustrated in FIG. 4, a convex terminal 2 is attached to the center of a square substrate sheet 1 and a non-adhesive layer 3 is attached to the lower surface of the corner of the substrate sheet 1 away from the terminal attachment point. Is laminated so that the end thereof is exposed at a corner end which is a part of the outer peripheral edge of the base sheet 1 to form a winding allowance A, and the entire lower surface of the base sheet 1 excluding the non-adhesive layer laminated portion. The conductive adhesive layer 4 is laminated. The planar shape of the non-adhesive layer 3 is substantially square, and the boundary line L between the non-adhesive layer 3 and the conductive adhesive layer 4 is a non-linear, substantially L-shaped boundary line. The other configuration is the same as the electrode material of the embodiment shown in FIGS.

In the electrode material illustrated in FIGS. 5 and 6, the convex terminal 2 is attached to a portion of the rectangular base sheet 1 near one end in the longitudinal direction (near the left end in the figure), and the opposite side is used. The non-adhesive layer 3 is laminated on the lower surface of the base sheet 1 so that its end is exposed at the other end (the right end in the figure) which is a part of the outer peripheral edge of the base sheet 1 and the winding allowance A is set. And a non-adhesive layer 3a adhered to the lower surface of the convex terminal 2, and a conductive adhesive layer 4 is laminated on the entire lower surface of the base sheet 1 except for the non-adhesive layer laminated portion. The non-adhesive layer 3 of this electrode material is
The width dimension gradually increases as it approaches the exposed end, and it has a substantially bell-shaped planar shape that becomes the maximum at the exposed end,
A boundary line L between the non-adhesive layer 3 and the conductive adhesive layer 4 is a substantially V-shaped boundary line with a rounded tip. In addition, since the non-adhesive layer 3a on the lower surface of the convex terminal 2 does not conduct electricity, it does not give an unpleasant electric stimulus due to a direct current, and also prevents corrosion of the convex terminal 22. The other configuration is the same as the electrode material of the embodiment shown in FIGS.

Further, in the electrode material illustrated in FIG. 7, a convex terminal 2 is attached to the center of an elliptical base sheet 1 and a non-adhesive layer is formed on the lower surface of the base sheet 1 excluding the convex terminal attaching portion. 3 is laminated so that the end thereof is exposed to the entire outer peripheral edge of the base sheet 1 to form a winding allowance A, and conductive adhesive is applied to the entire lower surface of the base sheet 1 excluding the non-adhesive layer laminated portion. The layer 4 is laminated. The non-adhesive layer 3 of the electrode material is formed in an annular shape, is exposed at the outer peripheral edge, and has a turnover A over the entire circumference, so that it can be turned from any part. And
The boundary line L between the non-adhesive layer 3 and the conductive adhesive layer 4 is an elliptical boundary line. Other configurations are the same as those described in FIGS.
Since the electrode material is the same as that of the embodiment shown in FIG.

Each of the electrode materials of the embodiments shown in FIGS. 4 to 7 is affixed to the human body by the adhesive force of the conductive adhesive layer 4 like the electrode material of the embodiment shown in FIGS. When the fingertip is inserted between the adhesive layer 3 and the human body and the turning margin A is picked up, it can be easily peeled off. Since the boundary line L is not linear in any of the electrode materials, the base line portion is not used. There is no fear that the material sheet 1 or the conductive layer 1a is bent and broken. In particular, as shown in the electrode materials of FIGS.
The width dimension of the non-adhesive layer 3 forming the maximum at the exposed end can be easily inserted with the fingertip, and the pinching margin A can be easily grasped. Further, the curling margin A as shown in the electrode material of FIG. Even in the case where A is formed in the corner portion, the turnover A can be easily picked up with the fingertip, so that the peeling operation of these electrode materials is further facilitated. Moreover, when the turnover A is formed at a place far away from the mounting position of the convex terminal 2 as in the electrode materials of FIGS. 5 and 6, when the turnover A is pinched and the electrode material is peeled off,
Since the fingertip does not hit the convex terminal 2 at all, contact failure with the conductive layer 1a due to rattling of the convex electrode 2 or the like can be more reliably prevented. In addition, when the turnover A is formed on the entire periphery as in the electrode material of FIG. 7, the turnover A can be pinched and peeled from anywhere. Even when the electrode material is stuck on the back and the electrode material is not visible, it is extremely possible. The peeling operation can be easily performed.

FIG. 8 is a bottom view of still another embodiment of the electrode material of the present invention. In this electrode material, a convex terminal 2 is attached at a position near one end in the longitudinal direction of the rectangular base sheet 1 (close to the left end in the figure), and a strip-shaped non- The adhesive layer 3 is laminated so that both end portions thereof are exposed at both ends in the width direction (upper and lower ends in the figure) of the base sheet 1 to form winding margins A and A, and the non-adhesive layer of the base sheet 1 is formed. A conductive adhesive layer 4 is laminated on the entire lower surface excluding the laminated portion, and a boundary line L between the non-adhesive layer 3 and the conductive adhesive layer 4 is formed.
Is a straight line. Other configurations are the same as those described in FIG.
3 is the same as the electrode material of the embodiment shown in FIG.

In such an electrode material, two turnovers A are formed at both ends in the width direction, so that the electrode material can be easily peeled by picking either turnover A. By the way, since the boundary line L of this electrode material is two straight lines, if the electrode material is peeled off in a direction perpendicular to the boundary line L, the base sheet 1 or the conductive layer is bent at the boundary line portion and easily broken. However, this electrode material is to pinch any one of the turning margins A and peel off in the direction of the band-shaped non-adhesive layer 3, and the boundary line L
And the direction in which the electrode material is peeled off is the same. Therefore, even when the boundary line L is a straight line crossing the electrode material, there is no fear that the base sheet 1 or the conductive layer on the lower surface thereof is bent at the boundary line portion and breaks.

It should be noted that if the width of the non-adhesive layer 3 is increased toward the exposed ends on both sides, and the boundary L is a substantially rectangular-shaped boundary as indicated by a dashed line, the non-adhesive layer 3 Even when the base sheet and the conductive layer are peeled off in a direction perpendicular to the direction, there is no fear that the base sheet or the conductive layer is bent at the boundary and broken.

[0035]

As is clear from the above description, the electrode material of the present invention can be easily peeled off from the human body by picking up the turning margin with a fingertip, and when the fingertip hits the convex terminal when peeling off. Since there is no such effect, there is an effect that there is no fear that distortion or rattling may occur at the mounting portion of the convex terminal to cause poor contact with the conductive layer. In particular, the electrode material having the turnover formed by maximizing the width dimension of the non-adhesive layer at the exposed end can easily insert the fingertip between the nonadhesive layer and the human body when peeled from the human body. Easy to pick up,
In addition, the electrode material with the boundary between the non-adhesive layer and the conductive adhesive layer as a non-linear boundary line does not bend at the boundary when peeled off, so it breaks even after repeated use. It also has the effect of not having to worry about doing it.

[Brief description of the drawings]

FIG. 1 is a perspective view of an electrode material according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of the electrode material of the embodiment.

FIG. 3 is a bottom view of the electrode material of the embodiment.

FIG. 4 is a bottom view of an electrode material according to another embodiment of the present invention.

FIG. 5 is a bottom view of an electrode material according to still another embodiment of the present invention.

FIG. 6 is a cross-sectional view of the electrode material of the example.

FIG. 7 is a bottom view of an electrode material according to another embodiment of the present invention.

FIG. 8 is a bottom view of an electrode material according to still another embodiment of the present invention.

FIG. 9 is a perspective view showing an example of a conventional electrode material.

[Explanation of symbols]

 Reference Signs List 1 base sheet 1a conductive layer 2 convex electrode 3 non-adhesive layer 4 conductive adhesive layer A turnover L boundary line between non-adhesive layer and conductive adhesive layer

──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-4-236940 (JP, A) JP-A-7-67842 (JP, A) JP-A 4-108559 (JP, U) JP-A 3- 101953 (JP, U) Japanese Utility Model 391359 (JP, U) Japanese Utility Model 5-76452 (JP, U) Japanese Utility Model 6-7750 (JP, U) Japanese Utility Model 7-17204 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) A61N 1/04 A61N 1/32

Claims (3)

(57) [Claims] 1. A part of a lower surface of a base sheet provided with a conductive layer on a lower surface thereof, excluding a terminal mounting portion of the base sheet, the convex terminal being in contact with the conductive layer protruding above the base sheet. In addition, a non-adhesive layer is laminated so that the end thereof is exposed on the outer peripheral edge of the base sheet or a part thereof to form a winding margin, and a conductive layer is formed on the lower surface of the base sheet excluding the non-adhesive layer laminated portion. An electrode material comprising an adhesive layer laminated thereon. 2. The electrode material according to claim 1, wherein the boundary between the non-adhesive layer and the conductive adhesive layer is a non-linear boundary. 3. The electrode material according to claim 1, wherein the width of the non-adhesive layer is maximized at the exposed end.