JP2006122415A - Electrode member - Google Patents

Electrode member Download PDF

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JP2006122415A
JP2006122415A JP2004315657A JP2004315657A JP2006122415A JP 2006122415 A JP2006122415 A JP 2006122415A JP 2004315657 A JP2004315657 A JP 2004315657A JP 2004315657 A JP2004315657 A JP 2004315657A JP 2006122415 A JP2006122415 A JP 2006122415A
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conductive
conductive adhesive
terminal
film
convex terminal
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JP2004315657A
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Masahiko Taniguchi
雅彦 谷口
Keiichiro Koyama
敬一郎 小山
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Takiron Co Ltd
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Takiron Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an electrode member where an effective quantity of current flows even through a part just under a projecting type terminal by reducing a difference in electrical resistance between a part just under the projecting type terminal of a conductive adhesion gel layer and a part not just under the terminal. <P>SOLUTION: The electrode member has a constitution where the projecting type terminal 2 is put through the terminal insertion hole 1b of a substrate sheet 1 having a conductive layer 1a on its lower surface, where the upper part of the terminal 2 is made to project to the upper surface of the sheet 1, where a flange part 2a of a lower end is engaged with and brought into contact with the conductive layer 1a in the surrounding of the terminal insertion hole 2b and where a conductive adhesion film 3 obtained by putting a conductive adhesive 3b to one face of a conductive film substrate 3a is stuck to the lower surface of the terminal 2 and the conductive layer 1a surrounding the terminal to be covered with the conductive adhesion gel layer 4. Since the electrical resistance of a part just under the projecting-type terminal is not increased markedly by the conductive film substrate 3a and the conductive adhesive 3b of the other part of the conductive adhesion film 3, the difference between the part and the other part is reduced and the effective quantity of current flows. An insulation film having an opening in its center may be stuck to the lower surface and the conductive layer of the projecting type terminal and stick the conductive adhesion film to the lower surface and the opening periphery part of the projecting type terminal exposed to the opening. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、低周波治療器、脳波測定器、心電図測定器などの導子として人体に貼付けて使用する電極材に関する。   The present invention relates to an electrode material used as a conductor for a low-frequency treatment device, an electroencephalogram measurement device, an electrocardiogram measurement device, or the like.

この種の人体に貼付けて使用する電極材として、低周波治療器などのコネクタと接続するスナップが、絶縁層と導電層との積層構造からなる支持体を絶縁層側から貫通して導電層側に至り、導電層側のスナップの底部が、絶縁性樹脂フィルムの片面に導電性粘着層を設けた導電性粘着テープで覆われ、この導電性粘着テープと支持体の導電層の上に導電性含水粘着剤層が積層された構造のスナップ付き生体用電極が知られている（特許文献１）。   As an electrode material to be used by sticking to this type of human body, a snap that connects to a connector such as a low-frequency treatment device penetrates a support body consisting of a laminated structure of an insulating layer and a conductive layer from the insulating layer side, and the conductive layer side The bottom of the snap on the conductive layer side is covered with a conductive adhesive tape with a conductive adhesive layer provided on one side of the insulating resin film, and the conductive layer is electrically conductive on the conductive adhesive tape and the conductive layer of the support. A biological electrode with a snap having a structure in which a water-containing pressure-sensitive adhesive layer is laminated is known (Patent Document 1).

この生体用電極は、スナップとコネクタとの接続、分離を繰り返すことによってスナップと支持体の導電層との接触が不安定になった場合でも、導電性粘着テープの導電性粘着層を通じてスナップ底部と支持体の導電層との導通を確保し、導通不良を防止するように図ったものである。
特開平１１−４０６号公報 Even when the contact between the snap and the conductive layer of the support becomes unstable due to repeated connection and separation of the snap and the connector, the biomedical electrode is connected to the bottom of the snap through the conductive adhesive layer of the conductive adhesive tape. It is intended to ensure conduction with the conductive layer of the support and prevent poor conduction.
JP-A-11-406

しかしながら、上記の生体用電極のように、絶縁性樹脂フィルムの片面に導電性粘着層を設けた導電性粘着テープによってスナップの底部を覆うと、スナップの底面とその直下の導電性含水粘着剤層の下面との間の電気抵抗が、導電性粘着テープの絶縁性樹脂フィルムによって上昇し、導電性含水粘着剤層のスナップ直下の部分がその周囲の部分に比べて電流が流れにくくなり、低周波治療の妨げになるという問題があった。このような問題は、例えば心電図測定用の小型電極のように、支持体の導電層に対するスナップの底面の占める面積の割合が大きくなるほど、その影響が大きくなるので、到底無視することはできない。   However, when the bottom of the snap is covered with a conductive adhesive tape having a conductive adhesive layer provided on one side of the insulating resin film, as in the case of the above-mentioned biomedical electrode, the bottom surface of the snap and the conductive water-containing adhesive layer immediately below the snap The electrical resistance between the lower surface of the conductive adhesive tape is increased by the insulating resin film of the conductive adhesive tape, and the portion immediately below the snap of the conductive water-containing adhesive layer is less likely to flow current than the surrounding portion. There was a problem that hindered treatment. Such a problem cannot be ignored because the influence of the problem increases as the ratio of the area occupied by the bottom surface of the snap to the conductive layer of the support increases as in the case of a small electrode for electrocardiogram measurement, for example.

本発明は上記の問題に対処すべくなされたもので、スナップ等の凸型端子の直下部分と他の部分との電気抵抗の差が少なく、凸型端子の直下部分でも低周波治療等に有効な量の電流が流れる電極材を提供することを解決課題としている。   The present invention has been made to cope with the above problems, and there is little difference in electrical resistance between the portion directly below the convex terminal such as a snap and other portions, and the portion directly below the convex terminal is effective for low-frequency treatment or the like. An object of the present invention is to provide an electrode material through which a large amount of current flows.

上記課題を解決するため、本発明に係る第一の電極材は、下端に鍔部を有する凸型端子を、下面に導電層を有する基材シートの端子挿通孔に下方から挿通して、凸型端子の上部を基材シートの上面に突出させると共に、鍔部を端子挿通孔の周囲の導電層に係着して接触させ、導電フィルム基材の片面に導電粘着剤を付着してなる導電粘着フィルムを凸型端子の下面及びその周囲の導電層に貼着して、導電粘着フィルム及び導電層を導電性粘着ゲル層で被覆したことを特徴とするものである。   In order to solve the above-mentioned problems, a first electrode material according to the present invention is formed by inserting a convex terminal having a flange at the lower end into a terminal insertion hole of a base sheet having a conductive layer on the lower surface from below. The upper part of the mold terminal protrudes from the upper surface of the base sheet, and the hook part is engaged with and contacted with the conductive layer around the terminal insertion hole, and the conductive adhesive is attached to one side of the conductive film base. The adhesive film is attached to the lower surface of the convex terminal and the conductive layer around it, and the conductive adhesive film and the conductive layer are covered with a conductive adhesive gel layer.

そして、本発明に係る第二の電極材は、下端に鍔部を有する凸型端子を、下面に導電層を有する基材シートの端子挿通孔に下方から挿通して、凸型端子の上部を基材シートの上面に突出させると共に、鍔部を端子挿通孔の周囲の導電層に係着して接触させ、中央に開口を形成した絶縁フィルムを、その開口が凸型端子の下面中央に位置するように凸型端子の下面及びその周囲の導電層に貼着し、導電フィルム基材の片面に導電粘着剤を付着してなる導電粘着フィルムを、絶縁フィルムの開口に露出する凸型端子の下面及び絶縁フィルムの開口周縁部に貼着して、導電粘着フィルム及び絶縁フィルム及び導電層を導電性粘着ゲル層で被覆したことを特徴とするものである。   And the 2nd electrode material which concerns on this invention inserts the convex terminal which has a collar part in a lower end from the lower part through the terminal insertion hole of the base material sheet which has a conductive layer in the lower surface, and has the upper part of a convex terminal. An insulating film that protrudes from the upper surface of the base material sheet and engages and contacts the conductive layer around the terminal insertion hole to form an opening in the center is located at the center of the lower surface of the convex terminal. The conductive adhesive film is bonded to the lower surface of the convex terminal and the conductive layer around it, and the conductive adhesive film is adhered to one side of the conductive film substrate. The conductive adhesive film, the insulating film, and the conductive layer are covered with a conductive adhesive gel layer by being attached to the lower surface and the opening peripheral edge of the insulating film.

第一及び第二の電極材においては、導電粘着フィルムの導電フィルム基材の体積抵抗値が１×１０２〜１×１０７Ω・ｃｍであり、導電粘着剤の体積抵抗値が１×１０−２〜１×１０５Ω・ｃｍであり、導電粘着フィルム全体の体積抵抗値が１×１０２〜１×１０９Ω・ｃｍであることが好ましい。 In the first and second electrode materials, the volume resistance value of the conductive film substrate of the conductive adhesive film is 1 × 10 2 to 1 × 10 7 Ω · cm, and the volume resistance value of the conductive adhesive is 1 × 10. −2 to 1 × 10 5 Ω · cm, and the volume resistance value of the entire conductive adhesive film is preferably 1 × 10 2 to 1 × 10 9 Ω · cm.

第一の電極材のように、導電フィルム基材の片面に導電粘着剤を付着してなる導電粘着フィルムを凸型端子の下面及びその周囲の導電層に貼着してあると、凸型端子の下面とその直下の導電性粘着ゲル層の下面との間の電気抵抗が、導電粘着フィルムの導電粘着剤によっても、また導電フィルム基材によっても、大幅に上昇することがないため、導電性粘着ゲル層の凸型端子直下の部分と他の部分との電気抵抗の差が少なくなり、凸型端子直下の部分においても低周波治療等に有効な量の電流が流れるようになる。そして、凸型端子は導電粘着フィルムによって固定されるため、低周波治療器等のコネクタと凸型端子との接続及び分離を繰り返しても、凸型端子の鍔部と基材シートの導電層との接触不良を生じる心配がなく、万一、接触不良が生じたとしても、導電粘着フィルムを通じて凸型端子と基材シートの導電層との導通が確保される。   When the conductive adhesive film formed by attaching a conductive adhesive to one surface of the conductive film base material is attached to the lower surface of the convex terminal and the conductive layer around it as in the first electrode material, the convex terminal The electrical resistance between the lower surface of the conductive adhesive gel layer and the lower surface of the conductive adhesive gel layer immediately below the conductive adhesive film is not significantly increased by the conductive adhesive of the conductive adhesive film or by the conductive film substrate. The difference in electrical resistance between the portion immediately below the convex terminal and the other portion of the adhesive gel layer is reduced, and an amount of current effective for low-frequency treatment etc. flows in the portion immediately below the convex terminal. And since the convex terminal is fixed by the conductive adhesive film, even if the connection and separation between the connector and the convex terminal of the low frequency treatment device and the like are repeated, the ridge of the convex terminal and the conductive layer of the base sheet There is no fear of causing contact failure, and even if contact failure occurs, electrical connection between the convex terminal and the conductive layer of the base sheet is ensured through the conductive adhesive film.

また、第二の電極材のように、中央に開口を形成した絶縁フィルムを、その開口が凸型端子の下面中央に位置するように凸型端子の下面及びその周囲の導電層に貼着し、導電フィルム基材の片面に導電粘着剤を付着してなる導電粘着フィルムを、絶縁フィルムの開口に露出する凸型端子の下面及び絶縁フィルムの開口周縁部に貼着してあると、絶縁フィルムによって凸型端子が固定されて基材シートの導電層との導通が確保されると共に、導電粘着フィルムによって上記第一の電極材の場合と同様に導電性粘着ゲル層の凸型端子直下の部分にも低周波治療等に有効な量の電流が流れるようになる。   Also, as in the case of the second electrode material, an insulating film having an opening in the center is attached to the lower surface of the convex terminal and the surrounding conductive layer so that the opening is located at the center of the lower surface of the convex terminal. When the conductive adhesive film formed by adhering a conductive adhesive to one side of the conductive film substrate is attached to the lower surface of the convex terminal exposed at the opening of the insulating film and the peripheral edge of the opening of the insulating film, the insulating film As a result, the convex terminal is fixed to ensure electrical continuity with the conductive layer of the base sheet, and the conductive adhesive gel layer is the portion immediately below the convex terminal of the conductive adhesive gel layer as in the case of the first electrode material. In addition, an amount of current effective for low-frequency treatment or the like flows.

本発明の第一及び第二の電極材において、導電粘着フィルムの体積抵抗値が高過ぎると、導電性粘着ゲル層の凸型端子直下の部分と他の部分との電気抵抗の差が大きくなって凸型端子直下の部分に低周波治療等に有効な量の電流が流れにくくなり、逆に、導電粘着フィルムの体積抵抗値が低過ぎると、導電性粘着ゲル層の凸型端子直下の部分に過剰電流が流れて皮膚を刺激するようになるので、導電粘着フィルムの体積抵抗値は前述した範囲にあることが好ましい。   In the first and second electrode materials of the present invention, if the volume resistance value of the conductive adhesive film is too high, the difference in electrical resistance between the portion immediately below the convex terminal and the other portion of the conductive adhesive gel layer becomes large. If the volume resistance value of the conductive adhesive film is too low, the portion immediately below the convex terminal of the conductive adhesive gel layer becomes difficult. Therefore, the volume resistance value of the conductive adhesive film is preferably in the above-described range.

以下、図面を参照して本発明の具体的な実施形態を詳述する。   Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings.

図１は本発明に係る第一の電極材の一実施形態を示す平面図、図２は図１のＡ−Ａ線断面図、図３は同電極材の要部拡大断面図である。   FIG. 1 is a plan view showing an embodiment of a first electrode material according to the present invention, FIG. 2 is a cross-sectional view taken along the line AA in FIG. 1, and FIG.

図１〜図３に示す電極材において、１は下面に導電層１ａを形成した基材シートであり、この基材シート１の端子挿通孔１ｂには、下端に鍔部２ａを有する凸型端子２が下方から挿通されている。そして、この凸型端子２の上部は基材シート１の上面に突出し、下端の鍔部２ａは端子挿通孔１ｂの周囲の導電層１ａに係着して接触している。この凸型端子２の下面（鍔部２ａの下面）及びその周囲の導電層１ａには、導電フィルム基材３ａの片面に導電粘着剤３ｂを付着してなる導電粘着フィルム３が貼着され、この導電粘着フィルム３と導電層１ａが導電性粘着ゲル層４で被覆されて電極材が構成されている。   In the electrode material shown in FIGS. 1 to 3, reference numeral 1 denotes a base material sheet having a conductive layer 1 a formed on the lower surface, and the terminal insertion hole 1 b of the base material sheet 1 has a convex terminal having a flange 2 a at the lower end. 2 is inserted from below. And the upper part of this convex terminal 2 protrudes in the upper surface of the base material sheet 1, and the collar part 2a of a lower end is engaged with the conductive layer 1a around the terminal penetration hole 1b, and is contacting. A conductive adhesive film 3 formed by attaching a conductive adhesive 3b to one side of a conductive film substrate 3a is attached to the lower surface of the convex terminal 2 (the lower surface of the flange portion 2a) and the surrounding conductive layer 1a. The conductive adhesive film 3 and the conductive layer 1a are covered with a conductive adhesive gel layer 4 to constitute an electrode material.

上記の基材シート１としては、厚さ２０〜４００μｍ程度の軟質合成樹脂シートが使用され、例えばポリエチレンテレフタレート（ＰＥＴ）等のポリエステルシート、ポリウレタンシート、或いは、これらのポリエステルシートとポリウレタンシートをラミネートした複合シートなどが好ましく使用される。特に、３０〜１５０ｋｇ／ｃｍ２程度の１００モジュラス値を有する厚さ５０〜３００μｍ程度の透明な基材シートは、優れた屈曲性と適度な柔軟性を有し、電極材を人体の屈曲部の皮膚に貼付けたとき、皮膚の動きに十分追従して皮膚から簡単に剥がれる心配がなく、清潔感があるので、好ましく使用される。 As said base material sheet 1, the soft synthetic resin sheet about 20-400 micrometers in thickness is used, for example, polyester sheets, such as a polyethylene terephthalate (PET), a polyurethane sheet, or these polyester sheets and polyurethane sheets were laminated. A composite sheet or the like is preferably used. In particular, a transparent substrate sheet having a thickness of about 50 to 300 μm having a 100 modulus value of about 30 to 150 kg / cm 2 has excellent flexibility and moderate flexibility, and the electrode material is used for the bent portion of the human body. When pasted on the skin, it is preferably used because there is no fear of peeling off the skin easily following the movement of the skin, and there is a feeling of cleanliness.

基材シート１の形状は、図１に示すような楕円形のほか、円形、長円形、正方形、長方形、瓢箪形など、所望の形状とすることができ、また、端子挿通孔１ｂの位置も、図１に示すように基材シート１の一端側へ偏位させたり、中央に位置させるなど、所望の位置とすることができる。   The shape of the base sheet 1 can be a desired shape such as a circle, an oval, a square, a rectangle, and a bowl, as well as an ellipse as shown in FIG. 1, and the position of the terminal insertion hole 1b is also As shown in FIG. 1, it can be set to a desired position, for example, deviated toward one end of the base sheet 1 or positioned in the center.

基材シート１の下面の導電層１ａは、難腐食性の導電材料で形成することが好ましく、例えばカーボン粉末、グラファイト粉末、カーボンナノチューブ等を含有させた導電性の樹脂塗料、フィルム、インキ等で形成した導電層や、金属粉末もしくは金属粉末と非金属導電粉末との混合粉末を含有させた良導電性のペースト、樹脂塗料、インク等で形成した導電層などが好適である。この導電層１ａは基材シート１の下面全体に形成してもよいし、所望のパターン形状に形成してもよいが、いずれの場合も５００Ω／□以下の表面抵抗値を有することが実用上必要であり、特に１５０Ω／□以下の表面抵抗値を有する導電層が好ましい。   The conductive layer 1a on the lower surface of the base sheet 1 is preferably formed of a hardly corrosive conductive material, for example, a conductive resin paint, film, ink, or the like containing carbon powder, graphite powder, carbon nanotubes, or the like. A conductive layer formed, a conductive layer formed of a highly conductive paste containing a metal powder or a mixed powder of a metal powder and a non-metal conductive powder, a resin paint, ink, or the like is preferable. 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. In any case, it is practically necessary to have a surface resistance value of 500Ω / □ or less. In particular, a conductive layer having a surface resistance value of 150Ω / □ or less is preferable.

凸型端子２は、下端に鍔部２ａを形成すると共に上部に略球形の頭部を形成した中空構造の金属製端子であって、鍔部２ａは、凸型端子２の抜止めの役目と、凸型端子２と導電層１ａとの接触導通を確保する役目を果たしている。この凸型端子２は、従来から端子の製作に多用されている黄銅やアルミニウム等の金属で製作すればよいが、その場合にはニッケル等でメッキして耐蝕性を向上させることが望ましい。また、耐蝕性に優れたステンレス（例えばＳＵＳ３０４，ＳＵＳ３１６，ＳＵＳ３１６Ｌ等）で製作することも好ましく、このようなステンレス製の凸型端子２は、腐食による電気抵抗の増加が皆無に等しいので、長期に亘って低抵抗の通電性を確保できる利点がある。なお、金属製以外の、例えばカーボン粉等を多量に含む合成樹脂で成形した非腐食性の凸型端子なども、使用可能である。   The convex terminal 2 is a metal terminal having a hollow structure in which a flange portion 2a is formed at the lower end and a substantially spherical head portion is formed at the upper portion, and the flange portion 2a is used to prevent the convex terminal 2 from being removed. It plays the role of ensuring the contact conduction between the convex terminal 2 and the conductive layer 1a. The convex terminal 2 may be made of a metal such as brass or aluminum that has been widely used in the manufacture of terminals. In this case, it is desirable to improve the corrosion resistance by plating with nickel or the like. Moreover, it is also preferable to manufacture with stainless steel (for example, SUS304, SUS316, SUS316L, etc.) excellent in corrosion resistance, and such a convex terminal 2 made of stainless steel has no increase in electrical resistance due to corrosion, so it can be used for a long time. There is an advantage that low-resistance energization can be ensured. Note that non-corrosive convex terminals formed of a synthetic resin other than metal, for example, a synthetic resin containing a large amount of carbon powder or the like can also be used.

凸型端子２の鍔部２ａの下面及びその周囲の導電層１ａに貼着される導電粘着フィルム３は、図３に示すように、導電フィルム基材３ａの片面に導電粘着剤３ｂを付着、積層したものであって、この導電粘着剤３の粘着力で貼着されている。導電粘着フィルム３の導電フィルム基材３ａとしては、カーボン粉末、グラファイト粉末、カーボンナノチューブ等の非金属導電剤を含有させて均一に分散させた厚さ３０〜２００μｍ程度のポリエチレン、ポリプロピレン、ＰＥＴ等の樹脂フィルムが好ましく使用される。また、導電粘着剤３ｂとしては、ニッケル粉末、亜鉛粉末、マグネシウム粉末などの金属粉末、上記の非金属導電剤、又は、これらの混合物を含有させた粘着性のウレタン系、アクリル系、シリコーン系等の粘着剤およびアクリルゲル、ポリウレタンゲル等が好ましく使用され、これらは厚さ５〜５０μｍ程度に付着、積層される。   As shown in FIG. 3, the conductive adhesive film 3 adhered to the lower surface of the flange portion 2a of the convex terminal 2 and the surrounding conductive layer 1a is attached with the conductive adhesive 3b on one surface of the conductive film substrate 3a. It is what was laminated | stacked, Comprising: It adheres with the adhesive force of this electrically conductive adhesive 3. FIG. The conductive film substrate 3a of the conductive adhesive film 3 is made of polyethylene, polypropylene, PET or the like having a thickness of about 30 to 200 μm in which a nonmetallic conductive agent such as carbon powder, graphite powder, or carbon nanotube is contained and uniformly dispersed. A resin film is preferably used. In addition, as the conductive pressure-sensitive adhesive 3b, a metal powder such as nickel powder, zinc powder, and magnesium powder, the above-mentioned non-metal conductive agent, or a sticky urethane-based, acrylic-based, silicone-based or the like containing these mixtures. Are preferably used, and are adhered and laminated to a thickness of about 5 to 50 μm.

上記のように導電粘着フィルム３を凸型端子２の下面及びその周囲の導電層１ａに貼着すると、凸型端子２が固定されるため、低周波治療器等のコネクタと凸型端子２との接続及び分離を繰り返しても、凸型端子２の鍔部２ａと基材シート１の導電層１ａとの接触不良が生じ難くなり、万一、接触不良が生じたとしても、導電粘着フィルム３を通じて凸型端子２と基材シート１の導電層１ａとの導通を確保できる利点がある。   When the conductive adhesive film 3 is attached to the lower surface of the convex terminal 2 and the surrounding conductive layer 1a as described above, the convex terminal 2 is fixed. Even if connection and separation are repeated, contact failure between the flange 2a of the convex terminal 2 and the conductive layer 1a of the base sheet 1 is less likely to occur, and even if contact failure occurs, the conductive adhesive film 3 There exists an advantage which can ensure conduction | electrical_connection with the convex terminal 2 and the conductive layer 1a of the base material sheet 1 through.

ところで、前記特許文献１の生体用電極に使用されている導電性粘着テープ、即ち、絶縁性樹脂フィルムの片面に導電性粘着層を設けた導電性粘着テープを凸型端子２の下面及びその周囲の導電層１ａに貼着する場合は、導電性粘着ゲル層４の凸型端子２直下の部分の電気抵抗が絶縁性樹脂フィルムによって大幅に増大するため、その直下の部分に有効な量の電流が流れ難くなるが、上記のように導電フィルム基材３ａの片面に導電粘着剤３ｂを付着、積層した導電粘着フィルム３を貼着すると、導電性粘着ゲル層４の凸型端子２直下の部分の電気抵抗が、導電粘着フィルム３の導電粘着剤３ｂによっても、また導電フィルム基材３ａによっても、大幅に上昇することがなく、導電性粘着ゲル層４の凸型端子２直下の部分と他の部分との電気抵抗の差が少なくなるため、凸型端子２直下の部分においても有効な量の電流が流れるようになる。   By the way, the conductive adhesive tape used for the living body electrode of Patent Document 1, that is, the conductive adhesive tape provided with the conductive adhesive layer on one side of the insulating resin film is used as the lower surface of the convex terminal 2 and its surroundings. In the case of sticking to the conductive layer 1a, the electrical resistance of the portion immediately below the convex terminal 2 of the conductive adhesive gel layer 4 is greatly increased by the insulating resin film. However, when the conductive adhesive 3b is adhered and laminated on one side of the conductive film substrate 3a as described above, the portion immediately below the convex terminal 2 of the conductive adhesive gel layer 4 is attached. The electrical resistance of the conductive adhesive film 3 is not significantly increased by the conductive adhesive 3b of the conductive adhesive film 3 or by the conductive film substrate 3a. Electricity with part of The difference between the anti decreases, also the flow effective amount of a current in a portion immediately below the convex terminal 2.

凸型端子２と基材シート１下面の導電層１ａとの導通抵抗の上昇を抑え、且つ、導電性粘着ゲル層４の凸型端子２直下の部分と他の部分との電気抵抗の差を小さくするためには、金属粉末や非金属導電剤の含有量を加減して、導電粘着フィルム３の導電フィルム基材３ａの体積抵抗値を１×１０２〜１×１０７Ω・ｃｍ程度、導電粘着剤３ｂの体積抵抗値を１×１０−２〜１×１０５Ω・ｃｍ程度、導電粘着フィルム３全体の体積抵抗値を１×１０２〜１×１０９Ω・ｃｍ程度に調節することが好ましい。導電粘着剤３ｂ、導電フィルム基材３ａ、導電粘着フィルム３全体の体積抵抗値が上記のそれぞれの範囲の上限を超えると、凸型端子２と導電層１ａとの接触不良が万一生じた場合の導通抵抗や、導電性粘着ゲル層４の凸型端子直下の部分の電気抵抗がかなり増大するため、凸型端子２から導電層１ａへの低抵抗の通電が妨げられたり、凸型端子２直下の部分に有効量の電流が流れ難くなるといった不都合が生じるようになる。逆に、導電粘着剤３ｂ、導電フィルム基材３ａ、導電粘着フィルム３全体の体積抵抗値が上記のそれぞれの範囲の下限を下回ると、導電性粘着ゲル層４の凸型端子２直下の部分に過剰電流が流れるため、皮膚を刺激して不快感を与えるといった不都合が生じるようになる。 The increase in the conduction resistance between the convex terminal 2 and the conductive layer 1a on the lower surface of the base sheet 1 is suppressed, and the difference in electrical resistance between the portion immediately below the convex terminal 2 and the other portion of the conductive adhesive gel layer 4 is determined. In order to reduce the volume, the volume resistance value of the conductive film substrate 3a of the conductive adhesive film 3 is adjusted to about 1 × 10 2 to 1 × 10 7 Ω · cm by adjusting the content of the metal powder or the nonmetallic conductive agent. The volume resistance value of the conductive adhesive 3b is adjusted to about 1 × 10 −2 to 1 × 10 5 Ω · cm, and the volume resistance value of the entire conductive adhesive film 3 is adjusted to about 1 × 10 2 to 1 × 10 9 Ω · cm. It is preferable. When the volume resistance value of the conductive adhesive 3b, the conductive film substrate 3a, and the entire conductive adhesive film 3 exceeds the upper limit of each of the above ranges, a contact failure between the convex terminal 2 and the conductive layer 1a should occur. Of the conductive adhesive gel layer 4 and the electrical resistance of the portion immediately below the convex terminal of the conductive adhesive gel layer 4 are considerably increased, which prevents the low-resistance energization from the convex terminal 2 to the conductive layer 1a. There arises a disadvantage that it becomes difficult for an effective amount of current to flow directly under the portion. On the contrary, when the volume resistance value of the conductive adhesive 3b, the conductive film substrate 3a, and the entire conductive adhesive film 3 is lower than the lower limit of each of the above ranges, the conductive adhesive gel layer 4 has a portion immediately below the convex terminal 2. Since excessive current flows, inconveniences such as irritation of the skin and discomfort arise.

上記の導電粘着フィルム３及び導電層１ａを覆う導電性粘着ゲル層４は、イオン化合物（例えば塩化ナトリウム、過塩素酸リチウム、塩化カリウム、塩化リチウム等）を含有させたポリヒドロキシエチルメタクリレート等のヒドロゲルや、同様のイオン化合物を含有させたポリウレタンゲル等からなる厚さ１〜３ｍｍ程度のゲル層であり、その体積抵抗値が０．５〜２００ｋΩ・ｃｍ程度となるようにイオン化合物の含有量を調整したものが好適に使用される。特にポリウレタンゲルは、粘着力が良いため人体の皮膚にしっかりと貼付けることができ、しかも皮膚を刺激するモノマーを含まないため、皮膚のかぶれ等を起こす心配がないという利点があり、導電性粘着ゲル層４を形成するゲルとして最適である。このようなポリウレタンゲルは、アルキレンオキサイド鎖を有するポリオールとアルキレンオキサイド鎖を有するポリウレタンポリイソシアネートプレポリマーを反応させるか、或いはアルキレンオキサイド鎖を有するポリウレタンポリオールプレポリマーとアルキレンオキサイド鎖を有するポリウレタンポリイソシアネートプレポリマーを反応させることによって得られる。尚、この導電性粘着ゲル層４には、補強用の不織布、織布、微小編目のネットなどを埋入してもよい。   The conductive adhesive gel layer 4 covering the conductive adhesive film 3 and the conductive layer 1a is a hydrogel such as polyhydroxyethyl methacrylate containing an ionic compound (for example, sodium chloride, lithium perchlorate, potassium chloride, lithium chloride). Or a gel layer having a thickness of about 1 to 3 mm made of polyurethane gel or the like containing the same ionic compound, and the content of the ionic compound is adjusted so that the volume resistance value is about 0.5 to 200 kΩ · cm. The adjusted one is preferably used. Polyurethane gel, in particular, has the advantage that it can be firmly attached to the human skin because it has good adhesive strength, and since it does not contain monomers that irritate the skin, there is no risk of causing skin irritation. It is optimal as a gel for forming the gel 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. Is obtained by reacting. The conductive adhesive gel layer 4 may be embedded with a reinforcing nonwoven fabric, a woven fabric, a fine stitch net or the like.

以上のような構成の電極材は、基材シート１から突出した凸型端子２の頭部を例えば低周波治療器等の導子コード先端のコネクタに差込み接続し、導電性粘着ゲル層４の粘着力で人体の皮膚に貼付けられる。そして、治療器の電源を入れると、導子コードを通じて供給される低周波電流が凸型端子２から導電層１ａ、導電性粘着ゲル層４を通って人体に流れ、筋肉や循環系の低周波治療が行われる。このとき、導電性粘着ゲル層４の凸型端子２直下の部分と他の部分の電気抵抗の差が小さいので、低周波治療に有効な量の低周波電流が凸型端子２から導電粘着フィルム３を通って直下部分にも流れる。   The electrode material configured as described above is formed by connecting the head of the convex terminal 2 protruding from the base sheet 1 to a connector at the tip of a conductor cord such as a low-frequency treatment device, and connecting the conductive adhesive gel layer 4 Attached to human skin with adhesive strength. When the power of the treatment device is turned on, a low frequency 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 gel layer 4, and the low frequency of the muscle and circulatory system. Treatment is performed. At this time, since the difference in electrical resistance between the portion immediately below the convex terminal 2 and the other portion of the conductive adhesive gel layer 4 is small, an amount of low-frequency current effective for low-frequency treatment is transferred from the convex terminal 2 to the conductive adhesive film. Also flows through the 3 and directly underneath.

上記電極材の効果を確認するため、次のような実験を行った。即ち、カーボン粉末を含有させた導電樹脂塗料を下面に塗布して導電層１ａを形成した厚さ７５μｍのＰＥＴ製の基材シート１を使用し、この基材シート１の端子挿通孔１ｂにニッケルメッキを施した黄銅製の凸型端子２を下方から挿通して下端の鍔部２ａを導電層１ａに係着すると共に、導電粘着フィルム３として、カーボン粉末を含有させた円形のポリエチレンフィルム（体積抵抗値２．６×１０５Ω・ｃｍ程度、厚さ１００μｍ、面積２ｃｍ２）の片面に、ニッケル粉末を含有させたアクリルゲルよりなる導電粘着剤（体積抵抗値１０４Ω・ｃｍ程度）を３５μｍの厚さに付着、積層したもの（全体の体積抵抗値３．０×１０６Ω・ｃｍ程度）を、凸型端子２の下面及びその周囲の導電層１ａに貼着し、この導電粘着フィルム３及び導電層１ａの全体を、イオン化合物入りのポリウレタンゲルからなる導電性粘着ゲル層４（体積抵抗値２×１０３Ω・ｃｍ程度、厚さ１．４ｍｍ）で被覆することにより、電極材を製作した。そして、凸型端子２と凸型端子直下の導電性粘着ゲル層２の下面との間の表面抵抗、及び、凸型端子２と導電性粘着ゲル層２の周縁部分の下面との間の表面抵抗をそれぞれ測定したところ、凸型端子直下部分は１．０ｋΩ／□、周縁部分は０．７ｋΩ／□であり、その差は０．３ｋΩ／□であった。 In order to confirm the effect of the electrode material, the following experiment was conducted. That is, a PET base material sheet 1 having a thickness of 75 μm formed by applying a conductive resin coating containing carbon powder on the lower surface to form a conductive layer 1a is used. Nickel is inserted into the terminal insertion hole 1b of the base material sheet 1. A brass convex terminal 2 plated with metal is inserted from below and the lower flange 2a is engaged with the conductive layer 1a. As the conductive adhesive film 3, a circular polyethylene film containing a carbon powder (volume) Conductive adhesive (volume resistance value of about 10 4 Ω · cm) made of acrylic gel containing nickel powder on one side having a resistance value of about 2.6 × 10 5 Ω · cm, a thickness of 100 μm, and an area of 2 cm 2 ) This conductive adhesive is adhered and laminated to a thickness of 35 μm (overall volume resistance value of about 3.0 × 10 6 Ω · cm) to the lower surface of the convex terminal 2 and the surrounding conductive layer 1a. Film 3 and lead The entire layer 1a, by coating with a conductive adhesive gel layer 4 made of polyurethane gel of ionic compounds Monoiri (volume resistivity 2 × 10 3 Ω · cm or so, a thickness of 1.4 mm), were fabricated electrode material . And the surface resistance between the convex terminal 2 and the lower surface of the electroconductive adhesive gel layer 2 just under the convex terminal, and the surface between the convex terminal 2 and the lower surface of the peripheral part of the electroconductive adhesive gel layer 2 When the resistance was measured, the portion immediately below the convex terminal was 1.0 kΩ / □, the peripheral portion was 0.7 kΩ / □, and the difference was 0.3 kΩ / □.

比較のために、導電粘着フィルムに代えて、絶縁性のＰＥＴフィルムを絶縁性のアクリル系粘着剤で凸型端子２の下面及びその周囲の導電層１ａに貼着した以外は上記と同様にして電極材を作製した。そして、凸型端子２と凸型端子直下の導電性粘着ゲル層２の下面との間の表面抵抗、及び、凸型端子２と導電性粘着ゲル層２の周縁部分の下面との間の表面抵抗をそれぞれ測定したところ、凸型端子直下部分は１．７ｋΩ／□、周縁部分は０．７ｋΩ／□であり、その差は１ｋΩ／□と大きかった。   For comparison, in place of the conductive adhesive film, an insulating PET film was bonded to the lower surface of the convex terminal 2 and the surrounding conductive layer 1a with an insulating acrylic adhesive as in the above. An electrode material was produced. And the surface resistance between the convex terminal 2 and the lower surface of the electroconductive adhesive gel layer 2 just under the convex terminal, and the surface between the convex terminal 2 and the lower surface of the peripheral part of the electroconductive adhesive gel layer 2 When the resistance was measured, the portion immediately below the convex terminal was 1.7 kΩ / □, the peripheral portion was 0.7 kΩ / □, and the difference was as large as 1 kΩ / □.

以上の測定結果から、導電性粘着フィルムを貼着した本発明の電極材は、絶縁性フィルムを貼着した比較用の電極材に比べて、３倍以上の電流が凸型端子直下部分を流れ、低周波治療等に有効に作用していることがわかる。   From the above measurement results, the electrode material of the present invention adhered with the conductive adhesive film has a current that flows three times or more in the portion directly below the convex terminal as compared with the comparative electrode material adhered with the insulating film. It can be seen that this is effective for low frequency treatment.

図４は本発明に係る第二の電極材の一実施形態を示す平面図、図５は同電極材の要部拡大断面図である。   FIG. 4 is a plan view showing an embodiment of a second electrode material according to the present invention, and FIG. 5 is an enlarged cross-sectional view of a main part of the electrode material.

この第二の電極材は、中央に開口を形成した絶縁フィルム５を、その開口が凸型端子２の下面中央に位置するように凸型端子２の鍔部２ａの下面及びその周囲の導電層１ａに貼着すると共に、前述の導電粘着フィルム３を、絶縁フィルム５の開口に露出する凸型端子２の下面及び絶縁フィルム５の開口周縁部に貼着し、この導電粘着フィルム３及び絶縁フィルム５及び導電層１ａを前述の導電性粘着ゲル層で被覆している。絶縁フィルムとしては、例えば、１０〜２００μｍ程度の厚さを有する電気絶縁性の良好なポリエチレン等のポリオレフィン系フィルムや、ＰＥＴ等のポリエステル系フィルムなどが好ましく使用され、これらの絶縁フィルムは例えばウレタン、アクリル等の絶縁性の接着剤や粘着剤を用いて凸型端子２の下面に貼着される。   The second electrode material comprises an insulating film 5 having an opening in the center, and the lower surface of the flange 2a of the convex terminal 2 and the surrounding conductive layer so that the opening is positioned at the center of the lower surface of the convex terminal 2. While sticking to 1a, the above-mentioned conductive adhesive film 3 is stuck to the lower surface of the convex terminal 2 exposed to the opening of the insulating film 5, and the opening peripheral part of the insulating film 5, and this conductive adhesive film 3 and insulating film 5 and the conductive layer 1a are covered with the above-mentioned conductive adhesive gel layer. As the insulating film, for example, a polyolefin film such as polyethylene having a thickness of about 10 to 200 μm and a good electrical insulation property, a polyester film such as PET, and the like are preferably used. It sticks on the lower surface of the convex terminal 2 using an insulating adhesive such as acrylic or an adhesive.

この第二の電極材の他の構成は、前述した第一の電極材の構成と同様であるので、図４及び図５において同一部材に同一符号を付して説明を省略する。   Since the other structure of this 2nd electrode material is the same as that of the structure of the 1st electrode material mentioned above, in FIG.4 and FIG.5, the same code | symbol is attached | subjected and description is abbreviate | omitted.

この第二の電極材も、絶縁フィルム５によって凸型端子２が固定されるため、凸型端子２と基材シート1の導電層１ａとの導通が確保され、また、絶縁フィルム５の開口に露出する凸型端子２の下面及び絶縁フィルム５の開口周縁部に貼着された導電粘着フィルム３によって、第一の電極材の場合と同様に、導電性粘着ゲル層４の凸型端子２直下の部分と他の部分との電気抵抗の差が小さくなり、凸型端子直下の部分にも低周波治療等に有効な量の電流が流れるようになる。   Also in this second electrode material, since the convex terminal 2 is fixed by the insulating film 5, conduction between the convex terminal 2 and the conductive layer 1 a of the base sheet 1 is secured, and the opening of the insulating film 5 is also secured. The conductive adhesive film 3 adhered to the lower surface of the exposed convex terminal 2 and the opening peripheral edge of the insulating film 5 is directly below the convex terminal 2 of the conductive adhesive gel layer 4 as in the case of the first electrode material. The difference in electrical resistance between this part and other parts becomes small, and an amount of current effective for low-frequency treatment etc. flows through the part directly below the convex terminal.

本発明に係る第一の電極材の一実施形態を示す平面図である。It is a top view which shows one Embodiment of the 1st electrode material which concerns on this invention. 図１のＡ−Ａ線断面図である。It is the sectional view on the AA line of FIG. 同電極材の要部拡大断面図である。It is a principal part expanded sectional view of the same electrode material. 本発明に係る第二の電極材の一実施形態を示す平面図である。It is a top view which shows one Embodiment of the 2nd electrode material which concerns on this invention. 同電極材の要部拡大断面図である。It is a principal part expanded sectional view of the same electrode material.

符号の説明Explanation of symbols

１ 基材シート
１ａ 導電層
１ｂ 端子挿通孔
２ 凸型端子
２ａ 鍔部
３ 導電粘着フィルム
３ａ 導電フィルム基材
３ｂ 導電粘着剤
４ 導電性粘着ゲル層
５ 絶縁フィルム DESCRIPTION OF SYMBOLS 1 Base material sheet 1a Conductive layer 1b Terminal insertion hole 2 Convex terminal 2a Eave part 3 Conductive adhesive film 3a Conductive film base material 3b Conductive adhesive 4 Conductive adhesive gel layer 5 Insulating film

Claims (3)

下端に鍔部を有する凸型端子を、下面に導電層を有する基材シートの端子挿通孔に下方から挿通して、凸型端子の上部を基材シートの上面に突出させると共に、鍔部を端子挿通孔の周囲の導電層に係着して接触させ、導電フィルム基材の片面に導電粘着剤を付着してなる導電粘着フィルムを凸型端子の下面及びその周囲の導電層に貼着して、導電粘着フィルム及び導電層を導電性粘着ゲル層で被覆したことを特徴とする電極材。   A convex terminal having a flange at the lower end is inserted from below into a terminal insertion hole of a base sheet having a conductive layer on the lower surface so that the upper portion of the convex terminal protrudes from the upper surface of the base sheet, and the flange is The conductive adhesive film formed by attaching and contacting the conductive layer around the terminal insertion hole and adhering the conductive adhesive to one side of the conductive film substrate is adhered to the lower surface of the convex terminal and the surrounding conductive layer. An electrode material comprising a conductive adhesive film and a conductive layer covered with a conductive adhesive gel layer. 下端に鍔部を有する凸型端子を、下面に導電層を有する基材シートの端子挿通孔に下方から挿通して、凸型端子の上部を基材シートの上面に突出させると共に、鍔部を端子挿通孔の周囲の導電層に係着して接触させ、中央に開口を形成した絶縁フィルムを、その開口が凸型端子の下面中央に位置するように凸型端子の下面及びその周囲の導電層に貼着し、導電フィルム基材の片面に導電粘着剤を付着してなる導電粘着フィルムを、絶縁フィルムの開口に露出する凸型端子の下面及び絶縁フィルムの開口周縁部に貼着して、導電粘着フィルム及び絶縁フィルム及び導電層を導電性粘着ゲル層で被覆したことを特徴とする電極材。   A convex terminal having a flange at the lower end is inserted from below into a terminal insertion hole of a base sheet having a conductive layer on the lower surface so that the upper portion of the convex terminal protrudes from the upper surface of the base sheet, and the flange is An insulating film that is engaged with and contacted with the conductive layer around the terminal insertion hole and has an opening in the center is placed on the lower surface of the convex terminal and the surrounding conductive material so that the opening is located at the center of the lower surface of the convex terminal. Adhering to the bottom surface of the convex terminal exposed to the opening of the insulating film and the peripheral edge of the opening of the insulating film An electrode material comprising a conductive adhesive film, an insulating film, and a conductive layer covered with a conductive adhesive gel layer. 導電粘着フィルムの導電フィルム基材の体積抵抗値が１×１０２〜１×１０７Ω・ｃｍであり、導電粘着剤の体積抵抗値が１×１０−２〜１×１０５Ω・ｃｍであり、導電粘着フィルム全体の体積抵抗値が１×１０２〜１×１０９Ω・ｃｍである請求項１又は請求項２に記載の電極材。 The volume resistance value of the conductive film substrate of the conductive adhesive film is 1 × 10 2 to 1 × 10 7 Ω · cm, and the volume resistance value of the conductive adhesive is 1 × 10 −2 to 1 × 10 5 Ω · cm. The electrode material according to claim 1, wherein a volume resistance value of the entire conductive adhesive film is 1 × 10 2 to 1 × 10 9 Ω · cm.
JP2004315657A 2004-10-29 2004-10-29 Electrode member Pending JP2006122415A (en)

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WO2009041496A1 (en) * 2007-09-25 2009-04-02 Dainippon Sumitomo Pharma Co., Ltd. Electrode sheet and process for producing electrode sheet
JP2010246678A (en) * 2009-04-14 2010-11-04 Institute Of National Colleges Of Technology Japan Bioelectric signal measuring sensor, and method of manufacturing the same
JP2013530005A (en) * 2010-07-02 2013-07-25 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Disposable electrodes for electrical stimulation
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KR20160016262A (en) * 2014-08-04 2016-02-15 (주)휴먼드림 Abdominal Belt
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JPH067750U (en) * 1992-06-30 1994-02-01 タキロン株式会社 Low frequency therapeutic patch
JPH11406A (en) * 1997-06-11 1999-01-06 Nitto Denko Corp Electrode with snap for human body
JP2000279535A (en) * 1999-03-31 2000-10-10 Takiron Co Ltd Pad for low frequency treatment device

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009041496A1 (en) * 2007-09-25 2009-04-02 Dainippon Sumitomo Pharma Co., Ltd. Electrode sheet and process for producing electrode sheet
JP5186506B2 (en) * 2007-09-25 2013-04-17 朝倉染布株式会社 Electrode sheet and method for producing electrode sheet
US8739397B2 (en) 2007-09-25 2014-06-03 Nihon Kohden Corporation Electrode sheet and process for producing electrode sheet
JP2010246678A (en) * 2009-04-14 2010-11-04 Institute Of National Colleges Of Technology Japan Bioelectric signal measuring sensor, and method of manufacturing the same
JP2013530005A (en) * 2010-07-02 2013-07-25 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Disposable electrodes for electrical stimulation
JP2013202336A (en) * 2012-03-29 2013-10-07 Sekisui Plastics Co Ltd Bioelectrode for electric stimulation
KR20160016262A (en) * 2014-08-04 2016-02-15 (주)휴먼드림 Abdominal Belt
KR101652169B1 (en) * 2014-08-04 2016-08-29 (주)휴먼드림 Abdominal Belt
JP2021171078A (en) * 2020-04-20 2021-11-01 相元 金 Terminal for electrotherapy, device for electrotherapy, and electrotherapy method

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