JPH08742A - Electrode material - Google Patents

Abstract

PURPOSE:To obtain an electrode material without producing looseness at the fixed position of a convex terminal even if repeatedly used, capable of easily peeling off from a human body, and without breaking at the boundary part between a non-adhesive layer and an electroconductive adhesive layer. CONSTITUTION:A convex terminal 2 touching to an electroconductive layer 1a is mounted on a substrate sheet 1 with the conductive layer 1a on its reverse surface, and a non-adhesive layer 3 is laminated so as to expose its edge to the periphery or a part of the substrate sheet except the position where the convex terminal 2 touches to form an over-turning width A, and a conductive adhesive layer 4 is set on the reverse surface of the substrate sheet except the non-adhesive layer 3 part of the substrate sheet 1. This electric material can easily be peeled off since it has the over-turning width A, and looseness, etc., are prevented since the over-turning width A is apart from the convex terminal 2 position and finger tips are not abutted to the convex terminal 2. Preferably making the boundary between the non-adhesive layer 3 and the conductive adhesive layer 4 not cross this electrode material, breaking by crimp of the substrate sheet 1 or the conductive layer 1a at the boundary of both the layers 3, 4 is prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrode material used as a conductor of a low-frequency therapeutic device or the like which is attached to a human body.

[0002]

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

This electrode material is mounted on the corner portion of a base sheet 102 having a conductive layer 101 on the lower surface by protruding convex terminals 103 which come into contact with the conductive layer 101 so as to project above the base sheet. The non-adhesive layer 104 is laminated on the lower surface of the corner portion where the terminals are 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
The corner portion where the non-adhesive layer 104 is laminated is a so-called "rolling margin".
Therefore, it is possible to easily peel off the electrode material from the human body by pinching this corner portion with a fingertip. However, since the convex electrode 103 is attached to this corner,
When the electrode material is peeled off, the fingertip may hit the convex electrode 103,
Since the convex electrode 103 is often pinched, distortion or rattling may occur at the mounting position of the convex electrode 103 during repeated use, which may cause contact failure between the convex electrode 103 and the conductive layer 101. there were.

Moreover, in the above electrode material, since the boundary line L between the non-adhesive layer 104 and the conductive adhesive layer 105 is a straight line that obliquely crosses the corner portion, the corner portion provided with the non-adhesive layer 104 is pinched from the human body. When peeled off, as shown by the chain line in FIG. 9, the base sheet 102 and the conductive layer 101 on the lower surface thereof
Has a problem that the base sheet 102 and the conductive layer 101 are easily broken at the boundary line L while the electrode material is bent at the boundary line L and the electrode material is repeatedly attached to and removed from the human body.

The present invention has been made in view of these problems, and an object thereof is to easily remove it from the human body without causing rattling or the like at the mounting position of the convex terminal even after repeated use. It is desirable to provide an electrode material in which the base sheet or the conductive layer is not broken at the boundary between the non-adhesive layer and the conductive adhesive layer.

[0007]

In order to achieve the above object, the electrode material of the present invention comprises a base material sheet having a conductive layer on the lower surface thereof, and a convex terminal which comes into contact with the conductive layer is provided above the base material sheet. It is attached by projecting, and a non-adhesive layer is laminated on a part of the lower surface of the base material sheet excluding the terminal attachment part so that the end part is exposed to the entire peripheral edge of the base material sheet or a part thereof to form a turning margin. In addition, a conductive adhesive layer is laminated on the lower surface of the base sheet excluding the non-adhesive layer laminated portion. And, desirably, the boundary line between the non-adhesive layer and the conductive adhesive layer is formed as a non-linear boundary line, and the width of the non-adhesive layer is maximized at the exposed end portion.

[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 at the entire peripheral edge of the base sheet or a part thereof. The turning margin thus formed is not attached to the human body. Therefore, by inserting the fingertip from the entire peripheral edge of the base sheet where the non-adhesive layer is exposed or a part thereof, and picking up the turning margin,
The electrode material can be easily removed from the human body.

Moreover, since the non-adhesive layer is formed on a part of the lower surface of the base material sheet excluding the terminal mounting portion, the non-adhesive layer is formed at a position apart from the convex terminal, and thus the non-adhesive layer is provided. A fingertip does not hit the convex terminal when the electrode material is peeled from the human body by pinching, and the convex terminal is not pinched together with the turning margin. Therefore, even if the electrode material is repeatedly attached to and removed from the human body, distortion or rattling does not occur at the location where the convex electrode is attached, and there is no risk of causing contact failure between the convex terminal and the conductive layer.

Further, the electrode material having a non-linear boundary line between the non-adhesive layer and the conductive adhesive layer has a non-linear boundary line. When the electrode material is peeled off by picking up the winding margin, the base material sheet or the conductive layer on the lower surface thereof is used. 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 the conductive layer may be broken at the boundary line portion while repeatedly attaching and peeling the electrode material to and from the human body. Also disappears. Furthermore, since the electrode material having the maximum width of the non-adhesive layer at the exposed end portion can be easily inserted between the fingertip and the human body when pinching the turning margin, the electrode material can be peeled off more easily.

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 square base sheet including a, in which a terminal insertion hole 1b is formed in the center of the base sheet 1, and a convex terminal 2 is formed.
Is installed. The shape of the base material sheet 1 is not limited to a square, but may be a desired shape such as a rectangle, an ellipse, an oval, or a circle. Further, the position of the terminal insertion hole 1b is not limited to the center of the base material sheet 1 and 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)
A polyester sheet such as, or a flexible polyurethane sheet is preferably used. Especially 30-350k
A thickness of 50 to 200 μm having an elastic modulus of about g / cm ^2.
The opaque polyurethane sheet that has been treated with an antioxidant treatment so as not to turn yellow has excellent flexibility and appropriate flexibility. It does not easily peel off from the skin by following the
It is extremely preferable as the base sheet 1.

The conductive layer 1a is preferably formed of a non-corrosive conductive material, and is preferably formed of, for example, 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 material sheet 1 or may be formed in a desired pattern shape. In either 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 50Ω is preferable.

Into the terminal insertion hole 1b of the base sheet 1, a convex terminal 2 having a flange 2a formed at the lower end is inserted from below,
A substantially spherical terminal head 2 b projects 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 attached so that the convex terminal 2 does not come out upward from the terminal insertion hole 1b. . The convex terminal 2 may be made of metal or conductive non-metal, but it is necessary to have a small electric resistance of 1 Ω or less for practical use. The shape of the head 2b of the convex terminal 2 may not be substantially spherical,
The substantially spherical shape facilitates insertion of the convex terminal 2 into the terminal insertion hole 1b, and facilitates insertion and connection of the tip of the conductor 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 portion 2a is formed is covered with a covering material 6 made of a resin film or the like having excellent electric insulation and water impermeability. This covering material 6 prevents the current directly below from flowing from the lower end of the convex terminal 2 to the human body, and also prevents the convex terminal 2 from being corroded by water or an ionic compound 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 plane shape is laminated on a part of the lower surface of the base material sheet 1 excluding the terminal mounting portion via an adhesive or the like. This non-adhesive layer 3
Are laminated to form the 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 material sheet 1. Then, the conductive adhesive layer 4 is laminated on the entire lower surface of the base material sheet 1 excluding the laminated portion of the non-adhesive layer 3, and the boundary line L between the conductive adhesive layer 4 and the non-adhesive layer 3 is non-linear. It is a substantially U-shaped boundary line.

The planar size of the non-adhesive layer 3 forming the turning margin A is almost the same as the size of the fingertip, that is, the depth dimension is 5 mm or more, preferably about 5 to 20 mm, and the width dimension is 10 mm or more. It is preferably about 10 to 20 mm. If the depth dimension of the non-adhesive layer 3 is smaller than 5 mm and the width dimension is smaller than 10 mm, it is difficult to insert the fingertip between the non-adhesive layer 3 and the human body when peeling off the electrode material attached to the human body. When the depth dimension and the width dimension are larger than 20 mm, the area occupied by the conductive adhesive layer 4 is significantly reduced, so that the treatment area is reduced and the adhesive force to the human body is also reduced. Inconvenience occurs.

The thickness of the non-adhesive layer 3 and the conductive adhesive layer 4 is preferably about 1 to 3 mm.
It is desirable that the thickness of the conductive adhesive layer 4 is thinner than that of the conductive adhesive layer 4. When the non-adhesive layer 3 is thinner than the conductive adhesive layer 4 as described above, the non-adhesive layer 3 does not contact the human body when the electrode material is attached to the human body, so that the conductive adhesive layer 4 can be adhered to 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 a fingertip and pick up the turning margin A.

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

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

The conductive adhesive layer 4 contains a hydrogel such as polyhydroxyethylmethacrylate containing an ionic compound (eg, sodium chloride, lithium perchlorate, potassium chloride, lithium chloride), or an ionic compound. Made of polyurethane gel, etc.
The one in which the content of the ionic compound is adjusted so that the electric resistance is about 0.5 to 200 kΩ · cm is used. In particular, polyurethane gel has good adhesion and can be firmly attached to the skin of the human body, and since it does not contain monomers that irritate the skin, it does not cause skin irritation, etc. Therefore, it is optimal as an adhesive for forming the conductive adhesive layer 4. Such a polyurethane gel is obtained 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 the polymer.

Incidentally, these non-adhesive layer 3 and conductive adhesive layer 4
A release film 5 is superposed on the lower surface of the sheet, if necessary.

In the electrode material having the above-described structure, the head 2b of the convex terminal 2 protruding from the base sheet 1 is inserted and connected to the connector at the tip of the conductor cord of a low-frequency treatment device or the like to form a conductive adhesive layer. It is used by being attached to the human body with an adhesive strength 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, and low-frequency treatment of muscles and circulatory system is performed. Done. At this time, since the lower end of the convex terminal 2 is covered with the electrically insulating coating material 6, the direct current from the lower end of the terminal to the human body is cut off, and there is no fear of receiving an unpleasant electrical stimulation due to the direct current.

After 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 turning margin A is formed at a position away from the terminal mounting portion, the fingertip does not hit the convex terminal 2 or the convex terminal 2 is pinched together with the turning margin A. Therefore, even if the electrode material is repeatedly attached to and removed from the human body, no distortion or rattling will occur at the location where the convex electrode 2 is attached, and there is no risk of causing a contact failure between the convex terminal 2 and the conductive layer 1a. Absent. Moreover, in this electrode material, the boundary line L between the non-adhesive layer 3 and the conductive adhesive layer 4 is substantially U-shaped, and is not a straight line that crosses the electrode material. Therefore, when the turning margin A is pinched with a fingertip and rolled up, And, as shown by the alternate long and short dash line in FIG. 3, the conductive adhesive layer 4 is gradually peeled from the peripheral portion in a substantially V shape and the electrode material is curved upward, and at the boundary line L, the base sheet 1 and the conductive layer 1a are separated. It is peeled off without bending. Therefore, even if the electrode material is repeatedly attached to and removed from the human body, the base sheet 1
There is no concern that the conductive layer 1a or the conductive layer 1a breaks at the boundary line L.

In the case where the above-mentioned release films 5 are overlapped with each other, the electrode material can be easily peeled off from the release film 5 by pinching the turning margin A and attached to 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. 7 is an electrode of the present invention. It is a bottom view showing another example of material.

In the electrode material illustrated in FIG. 4, the convex terminal 2 is attached to the center of the square base sheet 1, and the non-adhesive layer 3 is formed on the lower surface of the corner of the base sheet 1 away from the terminal attachment location. Is laminated so that its end portion is exposed at a corner end which is a part of the outer peripheral edge of the base material sheet 1 to form a turning margin A, and on the entire lower surface of the base material 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 rest of the 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 which is close to one side end in the longitudinal direction (close to the left end in the figure), and the opposite side. The non-adhesive layer 3 is laminated on the lower surface of the base sheet 1 so that the end thereof is exposed at the other end (right end in the figure) which is a part of the outer peripheral edge of the base sheet 1, and the turning margin A And the non-adhesive layer 3a is adhered to the lower surface of the convex terminal 2, and the conductive adhesive layer 4 is laminated on the entire lower surface of the base material sheet 1 excluding the non-adhesive layer laminated portion. The non-adhesive layer 3 of this electrode material is
Its width dimension gradually increases as it approaches the exposed end, and it has a substantially bell-shaped planar shape that is maximum at the exposed end.
The boundary line L between the non-adhesive layer 3 and the conductive adhesive layer 4 is a round V-shaped boundary line with a rounded tip. Further, 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 electrical stimulus due to the direct current and prevents the convex terminal 22 from corroding. The rest of the configuration is the same as the electrode material of the embodiment shown in FIGS.

Further, in the electrode material illustrated in FIG. 7, the convex terminal 2 is attached to the center of the elliptical base sheet 1, and the non-adhesive layer is provided on the lower surface of the base sheet 1 excluding the convex terminal attachment portion. 3 is laminated so that the ends thereof are exposed at the entire outer peripheral edge of the base material sheet 1 to form a turning margin A, and conductive adhesive is applied to the entire lower surface of the base material sheet 1 excluding the non-adhesive layer laminated portion. It is a stack of layers 4. The non-adhesive layer 3 of the electrode material has a circular ring shape, is exposed at the outer peripheral edge, and the turning margin A extends 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 shown in FIGS.
The description is omitted because it is the same as the electrode material of the embodiment shown in FIG.

The electrode materials of the embodiments shown in FIGS. 4 to 7 are all adhered to the human body by the adhesive force of the conductive adhesive layer 4 like the electrode materials of the embodiments shown in FIGS. It can be easily peeled off by inserting a fingertip between the adhesive layer 3 and the human body and picking up the turning margin A. Since the boundary line L is not a straight line in any of the electrode materials, the boundary line portion is the base. There is no concern that the material sheet 1 and the conductive layer 1a are bent and broken. In particular, as in the electrode material shown in FIGS.
The width dimension of the non-adhesive layer 3 that forms the maximum width at the exposed end portion is such that the fingertip can be easily inserted and the turning margin A can be easily pinched. Even in the case where A is formed in the corner portion, it is easy to pinch the turning margin A with a fingertip, so that the peeling operation of these electrode materials is easier. Moreover, when the turning margin A is formed at a position greatly apart from the mounting position of the convex terminal 2 as in the electrode material of FIGS. 5 and 6, when the electrode material is peeled off by pinching the turning margin A,
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 can be more reliably prevented. In addition, like the electrode material of FIG. 7, the one with the turning margin A formed on the entire peripheral edge can be peeled off by pinching the turning margin A from anywhere, and even when the electrode material is stuck on the back and the electrode material cannot be seen, it is extremely Easy peeling operation.

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 to a part of the rectangular base sheet 1 near one end in the longitudinal direction (close to the left end in the figure), and a strip-shaped non-contact is formed on the lower surface of the center of the base sheet 1. The pressure-sensitive adhesive layer 3 is laminated so that both ends thereof are exposed at both widthwise ends (both upper and lower ends in the figure) of the base material sheet 1 to form the turning margins A and A, and the non-adhesive layer of the base material sheet 1 is formed. A conductive adhesive layer 4 is laminated on the entire lower surface excluding a 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. The other configuration is shown in FIG.
Since it is the same as the electrode material of the embodiment shown in FIG. 3, description thereof will be omitted.

In such an electrode material, since the two turning margins A are formed at both ends in the width direction, the electrode material can be easily peeled off by pinching either of the turning margins 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 the direction perpendicular to the boundary line L, the base material sheet 1 and the conductive layer are easily bent and broken at the boundary line portion. However, this electrode material is one in which one of the turning margins A is pinched and peeled in the direction of the strip-shaped non-adhesive layer 3, and the boundary line L
And the direction of peeling off the electrode material are the same. Therefore, even if the boundary line L is a straight line crossing the electrode material, there is no concern that the base sheet 1 and the conductive layer on the lower surface thereof are bent and broken at the boundary line portion.

If the width dimension of the non-adhesive layer 3 is increased toward the exposed end portions on both sides so that the boundary line L is a substantially V-shaped boundary line as shown by the alternate long and short dash line, even the non-adhesive layer 3 Even if the base sheet and the conductive layer are peeled off in a direction perpendicular to, there is no fear that the base sheet and the conductive layer are bent and broken at the boundary portion.

[0035]

As is apparent from the above description, the electrode material of the present invention can be easily peeled from the human body by picking up the turning margin with the fingertip, and when the fingertip hits the convex terminal when peeling. Since it is not present, there is an effect that there is no fear of causing distortion or rattling at the mounting position of the convex terminal and causing poor contact with the conductive layer. In particular, the electrode material with the width dimension of the non-adhesive layer maximized at the exposed end to form the turning margin allows the fingertip to be easily inserted between the non-adhesive layer and the human body when peeled off from the human body. Easy to pick up with
In addition, the electrode material with the non-linear boundary line between the non-adhesive layer and the conductive adhesive layer does not bend at the boundary part of the base material sheet or conductive layer when peeled off, so even if it is repeatedly used, it will break. It also has the effect of not worrying about

[Brief description of 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 an electrode material of the same example.

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

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]

 DESCRIPTION OF SYMBOLS 1 Base material sheet 1a Conductive layer 2 Convex electrode 3 Non-adhesive layer 4 Conductive adhesive layer A Rolling margin L Boundary between non-adhesive layer and conductive adhesive layer

Claims (3)

[Claims] 1. A part of the lower surface of a base sheet having a conductive layer on the lower surface, which is provided with protruding terminals in contact with the conductive layer so as to project above the base sheet and where the terminal mounting portion of the base sheet is excluded. In addition, a non-adhesive layer is laminated so that its end portion is exposed at the outer peripheral edge of the base sheet or a part thereof to form a turning margin, and the bottom surface of the base sheet excluding the non-adhesive layer-laminated portion is made conductive. An electrode material comprising an adhesive layer laminated. 2. The electrode material according to claim 1, wherein a boundary line between the non-adhesive layer and the conductive adhesive layer is a non-linear boundary line. 3. The electrode material according to claim 1 or 2, wherein the width of the non-adhesive layer is maximized at the exposed end portion.