JP2001299713A - Electrode - Google Patents
ElectrodeInfo
- Publication number
- JP2001299713A JP2001299713A JP2000117997A JP2000117997A JP2001299713A JP 2001299713 A JP2001299713 A JP 2001299713A JP 2000117997 A JP2000117997 A JP 2000117997A JP 2000117997 A JP2000117997 A JP 2000117997A JP 2001299713 A JP2001299713 A JP 2001299713A
- Authority
- JP
- Japan
- Prior art keywords
- conductive
- electrode
- support member
- flange
- terminal connector
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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Landscapes
- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
- Surgical Instruments (AREA)
- Electrotherapy Devices (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、電極に関する。更
に詳しくは、本発明は、低周波治療器の電極、心電図、
筋電、脳波等の内臓機能検査用電極、イオントフォレシ
スのリファレンスや薬剤単体電極、電気メス等のアース
電極等の生体に貼付して治療や検査を行う生体用電極に
特に好適使用しうる電極に関する。[0001] The present invention relates to an electrode. More specifically, the present invention provides a low frequency therapy device electrode, electrocardiogram,
Electrodes that can be used particularly favorably as biological electrodes such as myoelectricity, electroencephalogram, etc., for internal organ function testing, iontophoresis reference, drug single-electrode, earth electrode such as electric scalpel, etc. About.
【０００２】[0002]
【従来の技術】従来から、低周波治療器用の電極とし
て、スナップ型の端子を有する電極が用いられている。
この電極としては、図５に示すように、非導電性の支持
部材１に、支持部材の裏面に設けられた導電層２と、導
電層上に貼付された生体表面に粘着可能な導電性粘着剤
層３と、導電性粘着剤層に一部が接触した金属製の端子
接続具４を有する構造が知られている。2. Description of the Related Art Conventionally, an electrode having a snap-type terminal has been used as an electrode for a low frequency treatment device.
As shown in FIG. 5, a conductive layer 2 provided on the back surface of the non-conductive support member 1 and a conductive adhesive layer capable of adhering to the surface of a living body stuck on the conductive layer, as shown in FIG. There is known a structure having an agent layer 3 and a metal terminal connector 4 partially contacting the conductive pressure-sensitive adhesive layer.
【０００３】しかし、導電性粘着剤が水分を含有してい
たり、水分を含有していなくとも導電性を付与するため
の電解質を含有しているため、水分や電解質に起因して
金属製の端子接続具が腐食する問題があった。However, since the conductive pressure-sensitive adhesive contains water or contains an electrolyte for imparting conductivity even if it does not contain water, a metal terminal is caused by the water or the electrolyte. There was a problem that the connection tool corroded.
【０００４】この問題を解決する手段として、特開平７
−２５５８６０号公報では、下端に鍔部を設けた電気抵
抗が１Ω以下の導電性非金属よりなる凸型端子を用いる
ことにより腐食防止を行っている。また、特開平９−２
５３２１９号公報では、接続用スナップ（端子接続具）
の導電性粘着剤層に接する面に防錆テープを付設するこ
とにより腐食防止を行っている。As means for solving this problem, Japanese Patent Application Laid-Open
In JP-A-255860, corrosion is prevented by using a convex terminal made of a conductive nonmetal having an electric resistance of 1Ω or less and provided with a flange at the lower end. Also, Japanese Patent Application Laid-Open No. 9-2
In JP 53219, a snap for connection (terminal connector)
Corrosion is prevented by attaching a rust-preventive tape to the surface in contact with the conductive pressure-sensitive adhesive layer.
【０００５】[0005]
【発明が解決しようとする課題】上記公報に記載の構造
の電極では、腐食の問題はないものの、いくつかの他の
問題がある。The electrode having the structure described in the above publication does not have the problem of corrosion, but has some other problems.
【０００６】まず、特開平７−２５５８６０号公報に記
載の電極は、導電性非金属の端子接続具を用いている。
導電性非金属は、実質的には塊状のカーボンを切削加工
したものや、カーボンやグラファイトを多量に混合した
樹脂成型品であると記載されている。このような材料
は、脆く、破壊されやすい欠点がある。この欠点を補う
ためには、鍔部にある程度の厚みをもたせる必要があ
る。ところが、このような鍔部に厚みのある端子接続具
を電極に用いた場合、図６のように端子接続具４の下側
のみ電極の厚みが増して段差が形成されることとなる。
この段差は、生体に貼付した際、接触不良が生じるおそ
れがある。また、この段差は、使用者に違和感を生じさ
せるが、無理に押しつけて生体に貼付すると、図７のよ
うに端子部のみ導電性粘着剤の厚みが薄くなり、治療時
の電荷の分布にばらつきが生じることとなる。First, the electrode described in Japanese Patent Application Laid-Open No. 7-255860 uses a conductive non-metallic terminal connector.
It is described that the conductive nonmetal is a substantially cut mass of carbon or a resin molded product in which a large amount of carbon or graphite is mixed. Such materials have the drawback of being brittle and easily broken. In order to compensate for this drawback, it is necessary to give the flange a certain thickness. However, when a terminal connector having such a thick flange is used as an electrode, the thickness of the electrode is increased only on the lower side of the terminal connector 4 as shown in FIG.
This step may cause poor contact when applied to a living body. In addition, this step causes the user to feel uncomfortable. However, when it is forcibly pressed and affixed to a living body, the thickness of the conductive adhesive is reduced only in the terminal portion as shown in FIG. Will occur.
【０００７】また、上記公報には、凸型端子のぐらつき
を抑えるため、基材シートから突出する凸型端子の上部
に、下端に鍔部を設けた金属製のキャップを被着する構
造が記載されている。この構造によれば、キャップの鍔
部と凸型端子の鍔部によって端子挿通孔の周囲の基材シ
ートと導電層を上下から挟持させることができる。しか
し、導電性非金属の強度の問題から、強くカシメること
ができないため、この構造を採用する場合には、凸型端
子の下面に絶縁テープを貼付して端子を補強する必要が
ある。ところが、絶縁テープの貼付のみでは、導電性非
金属の鍔部が分厚いため、十分に端子を固定するのは困
難である。Further, the above publication describes a structure in which a metal cap having a flange at the lower end is attached to an upper part of a convex terminal projecting from a base sheet in order to suppress wobbling of the convex terminal. Have been. According to this structure, the base sheet and the conductive layer around the terminal insertion hole can be sandwiched from above and below by the flange of the cap and the flange of the convex terminal. However, since it cannot be strongly caulked due to the problem of the strength of the conductive non-metal, when employing this structure, it is necessary to affix an insulating tape to the lower surface of the convex terminal to reinforce the terminal. However, it is difficult to fix the terminal sufficiently only by attaching the insulating tape because the conductive non-metallic flange is thick.
【０００８】また、電極の支持部材としての軟質合成樹
脂シートとして、ＰＥＴシートおよび軟質ポリウレタン
シートが記載されている。しかし、ＰＥＴシートは緩衝
性がほとんどなく、柔軟性が低いため、電極としての強
度を十分に保てる程度に支持部材を厚くすると、支持部
材が硬くなりすぎて、生体の皮膚に沿いにくくなるとい
う欠点がある。一方、ポリウレタンシートは、ＰＥＴシ
ートより柔軟性が高いが、のび易いことが知られてお
り、カシメ構造をとったとしても、リード線着脱のとき
や、生体から電極を剥がす際、固定具が貫通したポリウ
レタンシートの孔が広がる恐れがある。そのため、端子
接続具が外れたり、孔の部分からシートが裂けて電極が
破壊されるおそれがある。Further, a PET sheet and a soft polyurethane sheet are described as a soft synthetic resin sheet as a support member for an electrode. However, since the PET sheet has little buffering property and low flexibility, if the supporting member is made thick enough to maintain sufficient strength as an electrode, the supporting member becomes too hard, and it is difficult to follow the skin of a living body. There is. On the other hand, the polyurethane sheet is more flexible than the PET sheet, but is known to be easily stretched. Even if the caulking structure is adopted, the fixing tool penetrates when attaching / detaching the lead wire or peeling the electrode from the living body. There is a possibility that the hole of the polyurethane sheet becomes wider. For this reason, there is a possibility that the terminal connector may come off, or the sheet may be torn from the hole, and the electrode may be broken.
【０００９】また、図８（ａ）及び（ｂ）のように、端
子接続具４に固定具５を常に正確にのカシメることは困
難であり、実際は、若干斜めにカシメられる場合もあり
える（図８（ｃ）参照）。即ち、端子接続具４と固定具
５のそれぞれの一端が近接し、他端が離れた状態にカシ
メられることになる（図８（ｄ）参照）。このとき、ポ
リウレタンシートの緩衝性が低いため、端子接続具４の
鍔部４ａの一端が浮き上がった状態になる。また、鍔部
４ａの浮き上がりを押さえた場合、固定具の鍔部５ａが
浮き上がった状態となる（図８（ｅ）参照）。この状態
でも、見かけ上固定されているが、通電性の点から完全
な固定とは言えない。As shown in FIGS. 8 (a) and 8 (b), it is difficult to always caulk the fixing tool 5 to the terminal connecting tool 4 accurately, and in fact, it may be caulked slightly obliquely ( FIG. 8 (c)). That is, the terminal connecting tool 4 and the fixing tool 5 are caulked such that one end thereof is close to the other and the other end is separated (see FIG. 8D). At this time, since the cushioning property of the polyurethane sheet is low, one end of the flange 4a of the terminal connector 4 is in a floating state. Further, when the rising of the flange 4a is suppressed, the flange 5a of the fixture is in a state of rising (see FIG. 8E). Even in this state, although it is apparently fixed, it cannot be said to be completely fixed from the viewpoint of electrical conductivity.
【００１０】また、特開平９−２５３２１９号公報に記
載の電極は、外部装置のコネクターと接続するための金
属製スナップが支持体を貫通して設けられた構造を有し
ている。そのため、例えば、外部装置のコネクターを接
続して電極を使用する際、スナップがぐらついたり、場
合によっては、導電層との接触不良が生じ電極としての
機能を十分に発揮できないおそれがある。The electrode described in Japanese Patent Application Laid-Open No. 9-253219 has a structure in which a metal snap for connecting to a connector of an external device is provided through a support. Therefore, for example, when an electrode is used by connecting a connector of an external device, the snap may fluctuate or, in some cases, a poor contact with the conductive layer may occur, and the function as an electrode may not be sufficiently exhibited.
【００１１】さらに、特開平９−２５３２１９号公報で
は柔軟基材としてポリエステル製布を使用しているが、
緩衝性という点では特開平７−２５５８６０号公報と同
じ問題を有する。そのため、これを単に後者の公報のカ
シメ構造と組み合わせても問題を解決することは不可能
である。また、布に疎水性繊維を使用しても、電極表面
が水等と接触した場合、毛細管現象で水分等が浸透し、
カシメ部分の強度が低下する。また、布は、手の油等が
付着しやすく、電極を繰り返し使用すると汚れやすいと
いう問題も有している。Further, in Japanese Patent Application Laid-Open No. 9-253219, a polyester fabric is used as a flexible base material.
In terms of buffering properties, it has the same problem as in JP-A-7-255860. Therefore, it is impossible to solve the problem simply by combining this with the caulking structure of the latter publication. Also, even if hydrophobic cloth is used for the cloth, when the electrode surface comes into contact with water or the like, moisture and the like penetrate by capillary action,
The strength of the swaged portion decreases. In addition, the cloth has a problem that hand oil or the like easily adheres to the cloth and easily stains when the electrode is used repeatedly.
【００１２】[0012]
【課題を解決するための手段】本発明は、これらの課題
を解決し、ぐらついたり、接触不良が生じたりせず、安
定して導通可能な端子接続具を有する電極を提供するこ
とを目的としてなされた発明である。SUMMARY OF THE INVENTION It is an object of the present invention to solve these problems and to provide an electrode having a terminal connector which can be stably conducted without wobble or poor contact. It is an invention made.
【００１３】かくして本発明によれば、非導電性で厚さ
０．３ｍｍ以上の弾性を有する柔軟基材からなる支持部
材と、支持部材の裏面上に設けられた導電層と、導電層
上に設けられた導電性粘着剤層と、凸部、凸部に対応す
る凹部及び凸部下端に鍔部を有する端子接続具と、端子
接続具の凹部に嵌合することにより端子接続具を係止し
うる凸部及び凸部下端に鍔部を有する導電性固定具とを
備え、端子接続具が、凸部下端の鍔部を支持部材の表面
と接するように設けられ、導電性固定具が、その凸部側
が導電層側に位置するように設けられ、導電性固定具の
凸部を導電層及び支持部材を貫通させて端子接続具の凹
部に嵌入することにより両具を係止し、端子接続具の鍔
部が支持部材に陥入して支持部材に圧着されていること
を特徴とする電極が提供される。Thus, according to the present invention, a support member made of a non-conductive flexible substrate having a thickness of 0.3 mm or more and elasticity, a conductive layer provided on the back surface of the support member, A terminal connector having a conductive adhesive layer provided, a convex portion, a concave portion corresponding to the convex portion, and a flange at the lower end of the convex portion, and a terminal connector being locked by fitting into the concave portion of the terminal connector. Provided with a conductive part having a flange at the lower end of the convex part and the convex part, and a terminal connector is provided so that the flange at the lower end of the convex part is in contact with the surface of the support member. The protrusion is provided so that the protrusion side is located on the conductive layer side, and the protrusions of the conductive fixing tool are penetrated through the conductive layer and the support member, and are fitted into the recesses of the terminal connection tool, thereby locking the two components, and thereby securing the terminal. An electrode, characterized in that a flange of a connection tool is indented into a support member and is crimped to the support member. It is provided.
【００１４】[0014]
【発明の実施の形態】本発明には支持部材として、非導
電性で厚さ０．３ｍｍ以上の弾性を有する柔軟基材が使
用される。BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, a non-conductive flexible substrate having a thickness of 0.3 mm or more is used as a supporting member.
【００１５】柔軟基材は、発泡体であることが好まし
い。また、疎水性で、透水性のない基材であることがよ
り好ましい。より具体的には、ポリエチレン、ポリプロ
ピレン、ポリエチレンビニルアセテート又はその部分鹸
化物の単独又は共重合体若しくは重合体混合物を含有す
る樹脂基材から得られる発泡シートであることが好まし
い。[0015] The flexible substrate is preferably a foam. It is more preferable that the substrate is hydrophobic and does not have water permeability. More specifically, a foamed sheet obtained from a resin base material containing a homopolymer, a copolymer or a polymer mixture of polyethylene, polypropylene, polyethylene vinyl acetate or a partially saponified product thereof is preferable.
【００１６】弾性を有する柔軟基材を使用することで、
図１（ａ）に示すように、端子接続具４の鍔部を、支持
部材１に陥入させることができる。よって、電極表面か
ら水がかかったとき、又は高湿度条件下で保管又は使用
された場合、端子接続具と支持部材の間や、支持部材自
体に水がしみ込んで、電極の電気抵抗値がばらついた
り、支持部材を構成する樹脂自体が膨潤して、係止部の
強度が弱くなることを防ぐことができる。図１（ａ）
中、６は導電性固定具を意味する。By using a flexible base material having elasticity,
As shown in FIG. 1A, the flange of the terminal connector 4 can be recessed in the support member 1. Therefore, when exposed to water from the electrode surface, or when stored or used under high humidity conditions, water seeps into the space between the terminal connector and the support member or into the support member itself, and the electric resistance value of the electrode varies. In addition, it is possible to prevent the resin constituting the support member from swelling and the strength of the locking portion from being weakened. FIG. 1 (a)
In the figure, 6 means a conductive fixture.
【００１７】これに対して、例えば、従来使用されてい
た綿のような親水性不織布は、緩衝性がなく、図１
（ｂ）に示すように、端子接続具４が支持部材１に圧着
され難いため、不織布自体に水分がしみ込むおそれがあ
り、その結果、水分が支持部材に浸透し係止部に達する
おそれがあった。更に、ポリエステルやアクリル等の疎
水性不織布は、繊維自体に水分はしみ込まないが、繊維
の間から毛細管現象で水分が浸透しカシメ部分に達する
おそれがあった。本発明では、このような水の浸透を防
ぐことができる。On the other hand, for example, a conventionally used hydrophilic nonwoven fabric such as cotton has no cushioning property,
As shown in (b), since the terminal connector 4 is hard to be crimped to the support member 1, moisture may permeate the nonwoven fabric itself, and as a result, moisture may permeate the support member and reach the locking portion. Was. Furthermore, in the case of hydrophobic non-woven fabrics such as polyester and acrylic, moisture does not permeate into the fibers themselves, but there is a risk that moisture penetrates between the fibers by capillary action and reaches the swaged portion. In the present invention, such water penetration can be prevented.
【００１８】柔軟基材は、厚さが０．３ｍｍ以上であ
り、０．３〜３ｍｍであることが好ましい。厚みが０．
３ｍｍ未満の場合、カシメたときの柔軟基材の変形が小
さいため、端子接続具を確実に固定することが困難とな
る。柔軟基材の厚さの上限は、端子接続具に端子の接続
を容易に行うという観点から、端子接続具が柔軟基材を
適度に陥入させうる３ｍｍ以下であることが好ましい。The flexible substrate has a thickness of 0.3 mm or more, preferably 0.3 to 3 mm. The thickness is 0.
If it is less than 3 mm, deformation of the flexible base material when caulking is small, and it is difficult to securely fix the terminal connector. The upper limit of the thickness of the flexible base material is preferably 3 mm or less, at which the terminal fitting can appropriately indent the flexible base material from the viewpoint of easily connecting the terminal to the terminal fitting.
【００１９】次に、支持部材の裏面上には導電層が設け
られている。Next, a conductive layer is provided on the back surface of the support member.
【００２０】導電層としては、金属箔、導電性樹脂フィ
ルム、導電性インクをコーティングした膜等が挙げられ
る。Examples of the conductive layer include a metal foil, a conductive resin film, a film coated with a conductive ink, and the like.
【００２１】金属箔としては、導電性を有していれば特
に制限されないが、腐食しにくく、導電性に優れた銀、
ニッケル、アルミニウム、ステンレス等からなる箔が好
ましい。導電層に金属箔を使用した場合、その厚さは３
〜３５μｍであることが好ましい。The metal foil is not particularly limited as long as it has conductivity, but it is hardly corroded and has excellent conductivity.
A foil made of nickel, aluminum, stainless steel or the like is preferable. When metal foil is used for the conductive layer, its thickness is 3
It is preferably about 35 μm.
【００２２】また、導電性樹脂フィルムとしては、銀、
銀／塩化銀、ニッケル等の金属粒子や導電性高分子の粒
子、カーボン、グラファイト等の単独又は混合物を分散
させた樹脂フィルムや、導電性高分子のフィルムを使用
することができる。導電層に導電性樹脂フィルムを使用
した場合、その厚さは３〜１００μｍであることが好ま
しい。The conductive resin film may be silver,
A resin film in which metal particles such as silver / silver chloride, nickel or the like, particles of a conductive polymer, carbon, graphite, or the like alone or in a mixture is dispersed, or a film of a conductive polymer can be used. When a conductive resin film is used for the conductive layer, its thickness is preferably 3 to 100 μm.
【００２３】なお、金属箔又は導電性樹脂フィルムを支
持部材上に形成する方法としては、接着剤を用いる方
法、加熱する方法、圧着する方法等が挙げられる。The method of forming the metal foil or the conductive resin film on the support member includes a method using an adhesive, a method of heating, and a method of pressing.
【００２４】導電性インクをコーティングして得られる
膜としては、銀、銀／塩化銀、ニッケル等の金属粒子や
導電性高分子の粒子、カーボン、グラファイト等の粒子
の単独又は混合物をポリウレタン、ポリエステル、ポリ
塩化ビニル、アクリル等の単独又は混合物よりなる樹脂
バインダー中に分散させた導電性インクを調製し、それ
を支持部材上に印刷法、吹き付け法、ディッピング法等
により塗布し、乾燥して形成された膜を使用することが
できる。なお、印刷法は、バーコーター印刷法、スクリ
ーン印刷法、フレキソグラフィー印刷法、グラビア印刷
法等を使用することができる。導電層に導電性インクを
コーティングした膜を使用する場合、その厚さは２〜３
５μｍであることが好ましい。As the film obtained by coating the conductive ink, metal particles such as silver, silver / silver chloride, and nickel, particles of a conductive polymer, and particles such as carbon and graphite can be used alone or in a mixture of polyurethane and polyester. Prepare a conductive ink dispersed in a resin binder composed of a single or a mixture of polyvinyl chloride, acrylic, etc., apply it on a support member by printing, spraying, dipping, etc., and dry to form Can be used. As a printing method, a bar coater printing method, a screen printing method, a flexographic printing method, a gravure printing method, or the like can be used. When using a film in which the conductive ink is coated on the conductive layer, its thickness is 2-3.
Preferably it is 5 μm.
【００２５】次に、導電層上には導電性粘着剤層が設け
られている。Next, a conductive pressure-sensitive adhesive layer is provided on the conductive layer.
【００２６】導電性粘着剤としては、特に限定されず、
当該分野で公知の粘着剤をいずれも使用することができ
る。例えば、以下のような粘着剤を使用することが好ま
しい。即ち、架橋された合成高分子１８〜３０重量％、
水１２〜３０重量％、多価アルコール２５〜６５重量％
および電解質塩１〜１３重量％を含むゲルからなる導電
性粘着剤を使用することができる。この導電性粘着剤
は、ゲル中に１２〜３０重量％含まれる水がゲルの飽和
吸水量の３〜５０％に相当し、ゲルを２０℃の水に１０
分間浸漬したときの粘着力低下が浸漬前の粘着力の５０
％以下の性質を有している。The conductive pressure-sensitive adhesive is not particularly limited.
Any pressure-sensitive adhesive known in the art can be used. For example, it is preferable to use the following adhesive. That is, 18-30% by weight of a crosslinked synthetic polymer,
12-30% by weight of water, 25-65% by weight of polyhydric alcohol
A conductive pressure-sensitive adhesive consisting of a gel containing 1 to 13% by weight of an electrolyte salt can be used. In this conductive pressure-sensitive adhesive, water contained in the gel in an amount of 12 to 30% by weight corresponds to 3 to 50% of the saturated water absorption of the gel, and the gel is dissolved in water at 20 ° C.
Of the adhesive strength before immersion is 50
% Or less.
【００２７】架橋された合成高分子を構成する重合性単
量体としては、式： ＣＨ2＝ＣＲ1−ＣＯＮＲ2Ｒ3 ［式中、Ｒ1は水素原子またはメチル基、Ｒ2およびＲ3
は水素原子または低級アルキル基をそれぞれ意味する］
で表されるアクリルアミドもしくはメタクリルアミド系
化合物、および式： ＣＨ2＝ＣＲ1−ＣＯＯＲ2 ［式中、Ｒ1およびＲ2はそれぞれ前記と同じ意味を有す
る］で表されるアクリル酸エステルもしくはメタクリル
酸エステル系化合物、ならびにビニルピロリドンが挙げ
られる。The polymerizable monomer constituting the crosslinked synthetic polymer is represented by the following formula: CH 2 CR 1 -CONR 2 R 3 [wherein R 1 is a hydrogen atom or a methyl group, R 2 and R 3
Represents a hydrogen atom or a lower alkyl group, respectively.
And an acrylic ester or methacrylic acid represented by the formula: CH 2 ＣＲCR 1 —COOR 2 wherein R 1 and R 2 each have the same meaning as described above. Ester compounds and vinylpyrrolidone.
【００２８】ここで、Ｒ2およびＲ3の低級アルキル基と
しては、メチル、エチル、プロピル、イソプロピル、ブ
チル、イソブチル、ｓｅｃ−ブチル、ｔｅｒｔ−ブチ
ル、ペンチル、ヘキシル等の炭素数１〜６の、直鎖状ま
たは分枝鎖状の低級アルキル基が挙げられる。Here, the lower alkyl group of R 2 and R 3 includes, for example, methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl, tert-butyl, pentyl, hexyl and the like having 1 to 6 carbon atoms. A linear or branched lower alkyl group is exemplified.
【００２９】そのほかに、（メタ）アクリル酸、ビニル
カルボン酸、アリルアミン、ビニルスルホン酸、アリル
スルホン酸、スチレンスルホン酸、ビニル安息香酸、ビ
ニルピリジン、ｔｅｒｔ−ブチルアクリルアミドスルホ
ン酸、メタクリロイルエチル、トリメチルアンモニウム
クロライドまたはジメチルアミノプロピル（メタ）アク
リルアミド、ヘキサメチレンジイソシアネートのような
多官能イソシアン酸エステル、エチレンオキシド、プロ
ピレンオキシド等のアルキレンオキシド、ポリエチレン
グリコール、ポリプロピレングリコール等のポリオール
などのイオン性の重合性単量体も使用できる。イオン性
単量体を使用する場合には、凝集体の生成を防ぐために
非イオン性の単量体を併用するのが好ましい。In addition, (meth) acrylic acid, vinyl carboxylic acid, allylamine, vinyl sulfonic acid, allyl sulfonic acid, styrene sulfonic acid, vinyl benzoic acid, vinyl pyridine, tert-butyl acrylamide sulfonic acid, methacryloyl ethyl, trimethyl ammonium chloride Alternatively, ionic polymerizable monomers such as polyfunctional isocyanates such as dimethylaminopropyl (meth) acrylamide and hexamethylene diisocyanate, alkylene oxides such as ethylene oxide and propylene oxide, and polyols such as polyethylene glycol and polypropylene glycol are also used. it can. When an ionic monomer is used, it is preferable to use a nonionic monomer in combination in order to prevent the formation of aggregates.
【００３０】重合性単量体とともに用いられる架橋性単
量体としては、Ｎ，Ｎ'−メチレンビスアクリルアミ
ド、Ｎ，Ｎ'−メチレンビスメタクリルアミド、Ｎ，Ｎ'
−エチレンビスアクリルアミド、Ｎ，Ｎ'−エチレンビ
スメタクリルアミド、１，２−ジアクリルアミドエチレ
ングリコール、ジ（トリまたはポリ）アクリレート、ジ
（トリまたはポリ）メタクリレートなどが挙げられる。The crosslinkable monomer used together with the polymerizable monomer includes N, N'-methylenebisacrylamide, N, N'-methylenebismethacrylamide, N, N '
-Ethylenebisacrylamide, N, N'-ethylenebismethacrylamide, 1,2-diacrylamideethylene glycol, di (tri or poly) acrylate, di (tri or poly) methacrylate and the like.
【００３１】上記架橋された合成高分子を得るのに適し
た架橋性単量体の使用割合は、重合性単量体および架橋
性単量体の種類にもよるが、通常、重合性単量体に対し
て０．１〜３．５重量％であり、より好ましくは０．１
５〜２．０重量％である。The proportion of the cross-linkable monomer suitable for obtaining the above-mentioned cross-linked synthetic polymer depends on the type of the polymerizable monomer and the cross-linkable monomer. 0.1 to 3.5% by weight based on the body, more preferably 0.1 to 3.5% by weight.
5 to 2.0% by weight.
【００３２】導電性高分子ゲル中に含まれる架橋された
合成高分子の組成割合は、１８〜３０重量％が好まし
く、より好ましいのは１８〜２５重量％である。The composition ratio of the crosslinked synthetic polymer contained in the conductive polymer gel is preferably from 18 to 30% by weight, and more preferably from 18 to 25% by weight.
【００３３】架橋された合成高分子の割合が１８重量％
より少ないと、そのような合成高分子を用いてゲルを作
成した場合、ゲル中に占める高分子主鎖の割合が低すぎ
るため、腰強度の充分なゲルが得られず、ゲル体の網目
構造中に封入された電解液を安定な状態に維持し難い。
一方、架橋された合成高分子の割合が３０重量％より多
いと、ゲル強度が高くて腰強度の大きなゲルが得られは
するものの、ゲル体の網目構造が密になりすぎて、網目
中に封入できる電解液の絶対量が少なくなるため、目的
とするインピーダンスの導電性高分子ゲルが得られ難
い。The ratio of the crosslinked synthetic polymer is 18% by weight.
If the amount is less, when a gel is prepared using such a synthetic polymer, the ratio of the polymer main chain in the gel is too low, so that a gel having sufficient waist strength cannot be obtained, and the network structure of the gel body It is difficult to maintain the electrolyte solution sealed therein in a stable state.
On the other hand, when the proportion of the crosslinked synthetic polymer is more than 30% by weight, a gel having a high gel strength and a high waist strength can be obtained, but the network structure of the gel body is too dense, and the gel is contained in the network Since the absolute amount of the electrolyte solution that can be sealed is reduced, it is difficult to obtain a conductive polymer gel having a desired impedance.
【００３４】導電性高分子ゲル中に含まれる水分は、ゲ
ル全体に対して１２〜３０重量％であり、より好ましく
は１６〜３０重量％である。The water content in the conductive polymer gel is 12 to 30% by weight, more preferably 16 to 30% by weight, based on the whole gel.
【００３５】ゲルの水分含量が１２％より少ないと、良
好な導電性が得られず、好適なインピーダンスのゲルと
ならないので、好ましくない。If the water content of the gel is less than 12%, good conductivity cannot be obtained, and a gel having a suitable impedance cannot be obtained.
【００３６】ゲルの水分含量が３０％より多いと、水が
網目中で安定に存在し難くなって乾燥しやすくなる。そ
の結果、ゲルのインピーダンスが徐々に増加して、長時
間使用中に測定精度の低下を招くので、好ましくない。When the water content of the gel is more than 30%, it is difficult for water to stably exist in the mesh, and the gel is easily dried. As a result, the impedance of the gel gradually increases, leading to a decrease in measurement accuracy during long-time use, which is not preferable.
【００３７】この導電性高分子ゲルでは、ゲルの総重量
に対して１２〜３０重量％の水分が含まれるとき、その
水分の量がゲルの飽和吸水量の３〜５０％に相当するの
が特徴である。In this conductive polymer gel, when water is contained in an amount of 12 to 30% by weight based on the total weight of the gel, the amount of the water corresponds to 3 to 50% of the saturated water absorption of the gel. It is a feature.
【００３８】ゲルに含まれる１２〜３０重量％の水分が
飽和吸水量の３％未満となるようなゲルでは、ゲルが水
に接触したときに速やかに吸水して膨潤するとともに高
分子網目構造が緩み、多価アルコール等の内包成分が溶
出してしまう。その結果、ゲルの組成が変化し、ゲルの
強度や粘着力が低下するため、水洗後の再使用に耐えら
れなくなる。In a gel in which the water content of 12 to 30% by weight contained in the gel is less than 3% of the saturated water absorption, when the gel comes into contact with water, it absorbs water quickly and swells, and the polymer network structure is increased. Looseness and inclusion components such as polyhydric alcohol elute. As a result, the composition of the gel changes, and the strength and adhesive strength of the gel decrease, so that the gel cannot be used again after washing.
【００３９】また、ゲルに含まれる１２〜３０重量％の
水分が飽和吸水量の５０％を超えるようなゲルでは、ゲ
ル自体の強度は高いが、粘着性に劣り、脆さが増して、
引っ張りや圧縮による破断や破壊が起こりやすくなり、
好ましくない。In a gel in which the water content of 12 to 30% by weight contained in the gel exceeds 50% of the saturated water absorption, the strength of the gel itself is high, but the adhesiveness is poor and the brittleness is increased.
Breakage and destruction due to tension and compression are likely to occur,
Not preferred.
【００４０】ゲル中に含まれる多価アルコールとして
は、ソルビトール、グリコール、グリセリン等が挙げら
れる。これらの多価アルコールは、ゲル中に２５〜６５
重量％含まれるのが好ましく、より好ましいのは３５〜
６０重量％である。Examples of the polyhydric alcohol contained in the gel include sorbitol, glycol, glycerin and the like. These polyhydric alcohols are present in the gel in 25-65
% By weight, more preferably 35 to
60% by weight.
【００４１】ゲルに含まれる多価アルコールの含量が２
５％より少ないと、充分な粘着力が得られないため好ま
しくない。一方、多価アルコールの含量が６５％を超え
ると、多価アルコールがゲルの表面にブリードして、粘
着力の低下を招くので、好ましくない。When the content of the polyhydric alcohol contained in the gel is 2
If it is less than 5%, a sufficient adhesive strength cannot be obtained, which is not preferable. On the other hand, if the content of the polyhydric alcohol exceeds 65%, the polyhydric alcohol bleeds on the surface of the gel, which causes a decrease in the adhesive strength, which is not preferable.
【００４２】ゲル中に含まれる電解質塩としては、塩化
ナトリウム、塩化カリウム、塩化マグネシウムのように
分子量が小さくて、皮膚刺激性のないものが好ましい。
これらの電解質塩は、ゲル中に１〜１３重量％含まれる
のが好ましく、より好ましいのは２〜６重量％である。As the electrolyte salt contained in the gel, those having a small molecular weight and no skin irritation, such as sodium chloride, potassium chloride and magnesium chloride, are preferred.
These electrolyte salts are preferably contained in the gel in an amount of 1 to 13% by weight, more preferably 2 to 6% by weight.
【００４３】ゲル中の電解質塩の含量が１重量％より少
ないと、好適なインピーダンスの生体用電極が得られな
い。また逆に、電解質塩の含量が１３重量％より多い
と、水の含量との関係で電離限界を超えて無駄となるた
め好ましくない。If the content of the electrolyte salt in the gel is less than 1% by weight, a biomedical electrode having a suitable impedance cannot be obtained. Conversely, if the content of the electrolyte salt is more than 13% by weight, it exceeds the ionization limit in relation to the water content, which is not preferable.
【００４４】上記導電性高分子ゲルを製造するには、ま
ず重合性単量体と、架橋性単量体と、多価アルコール
と、電解質塩とをそれぞれ計量し、これらの混合物に所
定量の水を加えて攪拌し、均一なモノマー配合液とす
る。これに重合開始剤を適宜加え、常法により重合反応
させて、導電性高分子ゲルを得ることができる。To produce the conductive polymer gel, first, a polymerizable monomer, a crosslinkable monomer, a polyhydric alcohol, and an electrolyte salt are respectively weighed, and a predetermined amount of the mixture is added to the mixture. Add water and stir to obtain a uniform monomer mixture. A conductive polymer gel can be obtained by appropriately adding a polymerization initiator thereto and conducting a polymerization reaction by a conventional method.
【００４５】このようにして得られるゲルの粘着力は２
００〜１０００ｇの範囲にあり、インピーダンスは比抵
抗２０Ω〜１ｋΩの範囲にあって、局部的な生体電気信
号や電気治療などに使用される生体用電極のゲルパッド
として用いるのに適している。The gel thus obtained has an adhesive strength of 2
It is in the range of 00 to 1000 g, and has an impedance in the range of specific resistance of 20 Ω to 1 kΩ, and is suitable for use as a gel pad of a biomedical electrode used for local bioelectric signals or electrotherapy.
【００４６】なお、導電性高分子ゲルには、所望によ
り、防腐剤、殺菌剤、安定化剤、香料、界面活性剤、着
色剤等を適宜添加してもよい。Incidentally, a preservative, a bactericide, a stabilizer, a fragrance, a surfactant, a coloring agent, and the like may be appropriately added to the conductive polymer gel, if desired.
【００４７】次に、本発明の電極は、凸部、凸部に対応
する凹部及び凸部下端に鍔部を有する端子接続具と、端
子接続具の凹部に嵌合することにより係止される凸部及
び凸部下端に鍔部を有する導電性固定具とを備えてい
る。端子接続具及び導電性固定具は、導電性を有する限
りどのような材質からなっていてもよい。但し、強度、
耐腐食性等の所望される特性を満たすという観点から、
難腐食性の金属を使用することが好ましい。具体的に
は、ＳＵＳ３０４、ＳＵＳ３１６、ＳＵＳ３１６L等オ
ーステナイト系、ＳＵＳ４１０等のマルテンサイト系、
ＳＵＳ４３０等フェライト系等のステンレスを使用する
ことができる。Next, the electrode of the present invention is locked by fitting the terminal connector having the convex portion, the concave portion corresponding to the convex portion, and the flange portion at the lower end of the convex portion, into the concave portion of the terminal connector. A conductive fixture having a protrusion and a flange at the lower end of the protrusion. The terminal connection tool and the conductive fixing tool may be made of any material as long as it has conductivity. However, strength,
From the viewpoint of satisfying desired properties such as corrosion resistance,
It is preferable to use a hardly corrosive metal. Specifically, austenitic systems such as SUS304, SUS316, and SUS316L; martensite systems such as SUS410;
Ferrite stainless steel such as SUS430 can be used.
【００４８】端子接続具の凸部は、端子との接続を容易
にするために、１．５〜４．０ｍｍの高さを有すること
が好ましい。また、凹部は凸部に対応した形状で、以下
で説明する導電性固定具の凸部を嵌入することにより係
止することができれば、その形状は特に限定されない。It is preferable that the projection of the terminal connector has a height of 1.5 to 4.0 mm to facilitate connection with the terminal. The shape of the concave portion is not particularly limited as long as the concave portion has a shape corresponding to the convex portion and can be locked by fitting the convex portion of the conductive fixing tool described below.
【００４９】更に、鍔部は少なくとも端子接続具を固定
することができる程度の厚さ及び幅を有する限り、その
形状等は特に限定されない。また、上記のような金属を
使用した場合、鍔部の厚みを０．１〜０．４ｍｍ程度に
薄くすることが可能である。厚みを０．１ｍｍ以上とす
ることで、鍔部の強度を確保し、正確な形状に成形する
のが容易となる。また、カシメ時の衝撃に耐えられず変
形したり、破壊されるおそれを抑制することもできる。
また、鍔部の厚みを０．４ｍｍ以下とすることで、成形
を容易とし、鍔部に対応する段差が導電性接着剤層の表
面に生じることを防ぐことができる。従って、接触不良
や、使用者に与える違和感を抑制することができる。Furthermore, the shape and the like of the flange are not particularly limited as long as they have at least a thickness and a width capable of fixing the terminal connector. In addition, when the above metal is used, the thickness of the flange can be reduced to about 0.1 to 0.4 mm. By setting the thickness to 0.1 mm or more, the strength of the flange portion is ensured, and it is easy to mold the flange into an accurate shape. In addition, it is possible to suppress the possibility of deformation or breakage due to the inability to withstand the impact at the time of caulking.
Further, by setting the thickness of the flange portion to 0.4 mm or less, molding can be facilitated and a step corresponding to the flange portion can be prevented from being generated on the surface of the conductive adhesive layer. Therefore, it is possible to suppress poor contact and uncomfortable feeling given to the user.
【００５０】更に、この鍔部の幅は、端子接続具の底面
の幅が５〜１５ｍｍとなるように調節されていることが
好ましい。Further, the width of the flange is preferably adjusted so that the width of the bottom surface of the terminal connector is 5 to 15 mm.
【００５１】次に、導電性固定具の凸部は、それを端子
接続具の凹部に嵌入することにより、両者を係止するこ
とができさえすれば、その高さ及び形状は特に限定され
ない。また、導電性固定具の鍔部の厚みは、上記端子接
続具の鍔部と同様の理由で、０．１〜０．４ｍｍの厚さ
を有することが好ましい。また、鍔部の幅は、導電性固
定具を固定することができさえすれば、特に限定されな
い。固定をより強固にする観点から、導電固定具の鍔部
の幅は、端子接続具の鍔部の幅と同程度か、より広いこ
とが好ましい。Next, the height and shape of the convex portion of the conductive fixture are not particularly limited as long as they can be locked by fitting the convex portion into the concave portion of the terminal connector. In addition, the thickness of the flange of the conductive fixture is preferably 0.1 to 0.4 mm for the same reason as the flange of the terminal connector. Further, the width of the flange is not particularly limited as long as the conductive fixing tool can be fixed. From the viewpoint of making the fixing stronger, it is preferable that the width of the flange of the conductive fixing tool is equal to or wider than the width of the flange of the terminal connector.
【００５２】上記端子接続具と導電性固定具は、次のよ
うに配置される。まず、端子接続具の鍔部が、凸部の下
端を支持部材の表面側に位置させるように配置され、導
電性固定具の鍔部が、導電層上に位置するように配置さ
れる。更に、その凹部に導電性固定具の凸部が導電層及
び支持部材を貫通して端子接続具の凹部に嵌入すること
により、端子接続具が係止されている。その結果、端子
接続具の鍔部が支持部材に陥入して支持部材に圧着され
ることとなる。The terminal connection tool and the conductive fixing tool are arranged as follows. First, the flange of the terminal connector is arranged so that the lower end of the projection is located on the surface side of the support member, and the flange of the conductive fixing tool is arranged on the conductive layer. Further, the terminal fitting is locked by the protrusion of the conductive fixing tool penetrating through the conductive layer and the support member and fitting into the recess of the terminal fitting. As a result, the flange portion of the terminal connector is recessed in the support member and is pressed against the support member.
【００５３】このように圧着されることで、支持部材を
パッキンのようにして端子接続具と導電性固定具とを固
定できるので、端子接続具の鍔部から支持部材に水分等
が浸透することを防ぐことができる。また、端子接続具
への導電性固定具の陥入時の位置あわせがずれること
で、端子接続具又は導電性固定具の鍔部に浮き上がりが
生じても、端子接続具が支持部材に陥入されているた
め、鍔部と支持部材との接触を維持することができる。
よって、浮き上がりによる支持部材への水分の侵入を防
ぐことができる。[0053] Since the support member can be used as a packing to fix the terminal connecting member and the conductive fixing member by the pressure bonding as described above, moisture or the like permeates the supporting member from the flange portion of the terminal connecting member. Can be prevented. Further, even if the terminal fitting or the conductive fixing tool is misaligned when the conductive fixing tool is recessed into the terminal fitting, the terminal fitting may be recessed into the support member even if the flange of the terminal fitting or the conductive fixing tool rises. Therefore, the contact between the flange portion and the support member can be maintained.
Therefore, it is possible to prevent the intrusion of moisture into the support member due to the lifting.
【００５４】更に、支持部材と導電層の間には、延伸さ
れた樹脂フィルム（以下、延伸フィルムとも称する）が
積層されていることが好ましい。延伸フィルムを積層す
ることで、引っ張り力に強い電極を得ることができる。
樹脂フィルムの延伸方法は、特に限定されず一軸や二軸
等の公知の方法が挙げられる。Further, a stretched resin film (hereinafter also referred to as a stretched film) is preferably laminated between the support member and the conductive layer. By laminating the stretched films, it is possible to obtain an electrode having high tensile strength.
The method for stretching the resin film is not particularly limited, and may be a known method such as uniaxial or biaxial.
【００５５】延伸フィルムの基材としては、ＰＥＴ、Ｏ
ＰＰ、ＯＰＳ等が使用可能である。延伸フィルムは、変
形しにくく、強度が高いため、電極を柔軟にするため薄
くしても、十分な強度を保持することが可能である。As the base material of the stretched film, PET, O
PP, OPS, etc. can be used. The stretched film is hardly deformed and has high strength. Therefore, even if the stretched film is thin to make the electrode flexible, it is possible to maintain sufficient strength.
【００５６】また、延伸フィルムは顔料を含んでいるこ
とが好ましい。顔料は特に制限されないが、酸化チタ
ン、酸化亜鉛、硫酸バリウム等が好適に用いられる。顔
料を含むことにより、フィルムの隠蔽性が高くなり、カ
ーボン等を用いることにより導電層が黒色に着色してい
ても、透けることがなく、衛生的で良好な外観を得るこ
とができる。ここで、隠蔽性が低いフィルムは、導電層
の色が柔軟基材をも透過して見える。なお、隠蔽性を高
める方法として、延伸フィルムの導電層と逆側の面にア
ルミ蒸着層を設ける方法もある。また、顔料の混合とア
ルミ蒸着膜の併用も可能である。The stretched film preferably contains a pigment. The pigment is not particularly limited, but titanium oxide, zinc oxide, barium sulfate and the like are preferably used. By including the pigment, the concealing property of the film is enhanced, and even if the conductive layer is colored black by using carbon or the like, the conductive layer is not transparent, and a hygienic and good appearance can be obtained. Here, in the film having low concealing property, the color of the conductive layer is seen through the flexible base material. In addition, as a method of improving the concealing property, there is also a method of providing an aluminum vapor deposition layer on the surface of the stretched film opposite to the conductive layer. It is also possible to use a mixture of a pigment and an aluminum vapor-deposited film.
【００５７】また、延伸フィルムの厚みは５〜７０μｍ
の範囲が好ましい。厚みが５μｍ未満では、導電層を設
ける際や加工の際に、しわが入ったり、強度不足でフィ
ルムが切れたりするおそれがあるため好ましくない。ま
た、厚みが７０μｍを超える場合、導電層を設ける際や
加工の際に、フィルムの強度が大きいため、しわが入ら
ず、フィルムが切れるおそれも殆どない。しかし、電極
として生体に貼付する際、フィルムの腰強度が強すぎて
生体の曲面に沿いにくく、粘着不良や脱落等が起こりや
すくなるため好ましくない。The stretched film has a thickness of 5 to 70 μm.
Is preferable. If the thickness is less than 5 μm, it is not preferable because wrinkles may occur or the film may be cut due to insufficient strength when the conductive layer is provided or processed. When the thickness exceeds 70 μm, the film has high strength when the conductive layer is provided or processed, so that the film does not wrinkle and there is almost no possibility of the film being cut. However, when it is applied to a living body as an electrode, it is not preferable because the stiffness of the film is too strong and it is difficult to follow the curved surface of the living body, and poor adhesion or falling off tends to occur.
【００５８】延伸フィルムの支持部材への積層方法とし
ては、接着剤を用いる方法、加熱により融着する方法、
圧着する方法等が挙げられる。この内、延伸フィルムに
与える影響の少ない接着剤を使用する方法が好ましい。
接着剤層を構成する接着剤としては、ポリエステル系樹
脂接着剤、アクリル系樹脂接着剤、塩化ビニル系樹脂接
着剤等を使用することができる。As a method for laminating the stretched film on the support member, a method using an adhesive, a method of fusing by heating,
Compression bonding method and the like can be mentioned. Among them, a method of using an adhesive having little effect on the stretched film is preferable.
As an adhesive constituting the adhesive layer, a polyester resin adhesive, an acrylic resin adhesive, a vinyl chloride resin adhesive, or the like can be used.
【００５９】なお、柔軟基材表面に化粧印刷を行う場
合、接着剤層を設けることには以下のような利点もあ
る。When decorative printing is performed on the surface of the flexible base material, the provision of the adhesive layer has the following advantages.
【００６０】化粧印刷が一色印刷の場合、任意にコロナ
処理を行った後、柔軟基材表面に化粧印刷してから延伸
フィルムを積層する方法がある。この場合、加熱により
融着する方法と接着剤層を設ける方法のいずれも可能で
ある。ただし、ドライ方式が好ましい。この場合は、接
着剤層を設けることに格別の効果はない。In the case where the decorative printing is one-color printing, there is a method of optionally performing a corona treatment, performing decorative printing on the surface of the flexible base material, and then laminating a stretched film. In this case, both a method of fusing by heating and a method of providing an adhesive layer are possible. However, a dry method is preferable. In this case, providing the adhesive layer has no particular effect.
【００６１】多色印刷の場合、位置ズレが発生して柔軟
基材に直接印刷するのが困難なため、延伸フィルムを積
層してから化粧印刷するのが好ましい。In the case of multicolor printing, it is difficult to print directly on a flexible base material due to misregistration. Therefore, it is preferable to perform decorative printing after laminating a stretched film.
【００６２】但し、柔軟基材の表面に化粧印刷を行う場
合は、コロナ処理を行わないと印刷が剥がれることがあ
る。しかし、導電層を形成した延伸フィルムを積層して
からコロナ処理を行うと、導電層から火花が出て危険な
ためコロナ処理はできない。また、導電層を形成した延
伸フィルムの積層前に、予め柔軟基材にコロナ処理をし
ても、延伸フィルムの積層を加熱して行った場合、コロ
ナが消失し、印刷適正が悪くなる。However, when decorative printing is performed on the surface of the flexible base material, the printing may be peeled off without corona treatment. However, if the corona treatment is performed after laminating the stretched films on which the conductive layers are formed, the corona treatment cannot be performed because sparks come out of the conductive layers and are dangerous. Further, even if the flexible substrate is subjected to corona treatment before lamination of the stretched film having the conductive layer formed thereon, if the lamination of the stretched film is heated and performed, the corona disappears and the printing adequacy is deteriorated.
【００６３】従って、接着層を介して延伸フィルムを積
層すれば、低温での加工が可能となるので、コロナを消
失させることなく、印刷を行うことができる。Therefore, if the stretched film is laminated via the adhesive layer, processing at a low temperature becomes possible, so that printing can be performed without losing the corona.
【００６４】更に、導電性固定具の導電性粘着剤層に接
する側の鍔部の表面は、絶縁層で覆われていてもよい。
絶縁層で覆うことにより、端子をより強固に固定した
り、腐食をより効果的に防止することができる。更に、
実際に電極を電気治療等に使用する際に、端子部分直下
で導通し易いところに絶縁層を設ければ、電気刺激をソ
フトにすることができる。Further, the surface of the flange portion of the conductive fixture on the side in contact with the conductive pressure-sensitive adhesive layer may be covered with an insulating layer.
By covering with an insulating layer, the terminal can be fixed more firmly and corrosion can be more effectively prevented. Furthermore,
When an electrode is actually used for electric treatment or the like, an electrical stimulation can be softened by providing an insulating layer in a place where conduction is easily provided immediately below a terminal portion.
【００６５】この絶縁層は、導電性固定具の鍔部より面
積が大きく、かつ、前記鍔部が導電性粘着剤と直接接触
しないように設けられていることが好ましい。この絶縁
層の固定方法は、例えば、絶縁層の片面に粘着層を設
け、粘着層を導電性固定具の鍔部と導電層に接触させる
方法が挙げられる。It is preferable that the insulating layer has an area larger than that of the flange of the conductive fixture and is provided so that the flange does not come into direct contact with the conductive adhesive. As a method for fixing the insulating layer, for example, there is a method in which an adhesive layer is provided on one surface of the insulating layer, and the adhesive layer is brought into contact with the flange of the conductive fixture and the conductive layer.
【００６６】絶縁層は、片面に導電層と同じ色の印刷を
施した樹脂フィルム又は、導電層と同じ色に調製した顔
料を練り込んだ樹脂フィルムを使用することができる。
印刷を施したフィルムの場合は、印刷面と逆側又は、印
刷面と樹脂フィルムの間にアルミ蒸着層を設けて隠蔽性
を高めることが望ましい。樹脂フィルムはＰＥＴ樹脂、
ポリエチレン、ポリプロピレン、ナイロン、ポリウレタ
ン、セロハン等が使用可能である。また、顔料の添加と
アルミ蒸着の併用も可能である。As the insulating layer, a resin film having one side printed in the same color as the conductive layer or a resin film in which a pigment prepared in the same color as the conductive layer is kneaded can be used.
In the case of a printed film, it is desirable to provide an aluminum vapor-deposited layer on the opposite side of the printed surface or between the printed surface and the resin film to enhance the concealing property. The resin film is PET resin,
Polyethylene, polypropylene, nylon, polyurethane, cellophane and the like can be used. It is also possible to use both the addition of a pigment and the deposition of aluminum.
【００６７】更に、絶縁層に印刷がなされている場合
は、印刷面の逆側の表層に、又は顔料を添加することで
色を調製した絶縁層の場合は、何れかの片面に、粘着層
が設けられていることが好ましい。これにより、導電性
固定具の鍔部に正確に固定することができる。Further, when printing is performed on the insulating layer, an adhesive layer may be provided on the surface opposite to the printed surface, or on one side of the insulating layer whose color has been adjusted by adding a pigment. Is preferably provided. Thereby, it can be accurately fixed to the flange of the conductive fixing tool.
【００６８】以下に、本発明の電極の具体的な構成を図
２（ａ）〜（ｈ）を用いて説明する。The specific structure of the electrode of the present invention will be described below with reference to FIGS.
【００６９】なお、図２（ａ）〜（ｈ）中、１は支持部
材、２は導電層、３は導電性粘着剤層、４は端子接続
具、６は導電性固定具、７は延伸フィルム、８は絶縁
層、９は接着剤層を意味する。2 (a) to 2 (h), 1 is a support member, 2 is a conductive layer, 3 is a conductive adhesive layer, 4 is a terminal connector, 6 is a conductive fixture, and 7 is a stretched member. A film, 8 is an insulating layer, and 9 is an adhesive layer.
【００７０】まず、図２（ａ）は、支持部材１、延伸フ
ィルム７、導電層２、導電性粘着剤層３、端子接続具４
及び導電性固定具６を備えた電極である。図２（ｂ）
は、端子接続具４周辺の拡大図である。First, FIG. 2A shows a support member 1, a stretched film 7, a conductive layer 2, a conductive adhesive layer 3, and a terminal connector 4.
And an electrode provided with a conductive fixture 6. FIG. 2 (b)
Is an enlarged view of the periphery of the terminal connector 4. FIG.
【００７１】図２（ｃ）は、図２（ａ）の構成におい
て、導電性固定具６の鍔部を覆う絶縁層８を設けた電極
である。FIG. 2 (c) shows an electrode provided with an insulating layer 8 covering the flange of the conductive fixture 6 in the configuration of FIG. 2 (a).
【００７２】図２（ｄ）は、図２（ｃ）の構成におい
て、導電層２を延伸フィルム７上の一部に設けた電極で
ある。FIG. 2 (d) shows an electrode in which the conductive layer 2 is provided on a part of the stretched film 7 in the configuration of FIG. 2 (c).
【００７３】図２（ｅ）は、図２（ｃ）の構成におい
て、支持部材１のみを延在させた電極である。FIG. 2E shows an electrode in which only the support member 1 is extended in the configuration of FIG. 2C.
【００７４】図２（ｆ）は、図２（ｃ）の構成におい
て、延伸フィルム７と支持部材１を延在させた電極であ
る。FIG. 2F shows an electrode in which the stretched film 7 and the support member 1 are extended in the configuration of FIG. 2C.
【００７５】図２（ｇ）は、図２（ｃ）の構成におい
て、支持部材１、延伸フィルム７及び導電層２を延在さ
せ、延在させた部分に端子接続具４、導電性固定具６及
び絶縁層８を設けた電極である。FIG. 2 (g) shows the structure of FIG. 2 (c) in which the support member 1, the stretched film 7 and the conductive layer 2 are extended, and the terminal connector 4 and the conductive fixing member are provided in the extended portions. 6 and an electrode provided with an insulating layer 8.
【００７６】図２（ｈ）は、図２（ｃ）の構成におい
て、支持部材１と延伸フィルム７との間に接着剤層９を
設けた電極である。FIG. 2 (h) shows an electrode in which an adhesive layer 9 is provided between the support member 1 and the stretched film 7 in the configuration of FIG. 2 (c).
【００７７】本発明の電極は、低周波治療器の電極、心
電図、筋電、脳波等の内臓機能検査用電極、イオントフ
ォレシスのリファレンスや薬剤単体電極、電気メス等の
アース電極等の生体に貼付して治療や検査を行う生体用
電極に特に好適に使用することができる。また、生体用
電極以外にも、電圧の印加を望む分野であれば、特に限
定されることなく本発明の電極を使用することができ
る。The electrodes of the present invention can be applied to living organisms such as electrodes for low-frequency therapeutic devices, electrodes for examination of internal organ functions such as electrocardiograms, myoelectrics, and electroencephalograms, electrodes for iontophoresis, electrodes for single drugs, and earth electrodes such as electric scalpels. It can be particularly suitably used for a biomedical electrode to be applied and treated or tested. The electrode of the present invention can be used without particular limitation in fields other than biological electrodes, as long as it is a field where voltage application is desired.
【００７８】[0078]
【実施例】実施例１ 硫酸バリウムが練り込まれた厚み３６μmのポリエステ
ルフィルムからなる延伸フィルム７に、カーボンを含む
インクを印刷して導電層２を形成した（図３（ａ）及び
（ｂ）参照）。次に、延伸フィルム７の導電層２形成面
の逆側に、接着剤層９を介して、厚さ０．６ｍｍの架橋
ポリエチレンフォームからなる緩衝性を有する柔軟基材
（支持部材）１を積層した（図３（ｃ）及び（ｄ）参
照）。EXAMPLE 1 A conductive layer 2 was formed by printing an ink containing carbon on a stretched film 7 made of a 36 μm-thick polyester film into which barium sulfate had been kneaded (FIGS. 3A and 3B). reference). Next, on the side opposite to the surface on which the conductive layer 2 is formed of the stretched film 7, a flexible base material (support member) 1 made of a crosslinked polyethylene foam having a thickness of 0.6 mm is laminated via an adhesive layer 9. (See FIGS. 3C and 3D).
【００７９】次に、ＳＵＳ３１６Ｌからなる凸部、凹部
及び鍔部を有するスナップ型の端子接続具４を、鍔部が
下になるように支持部材１の表面に設置した。次いで、
導電層２側から、ＳＵＳ３１６Ｌからなる凸部及び鍔部
を有する導電性固定具６を、その凸部を導電層２、延伸
フィルム７、接着剤層９と支持部材１を貫通させ、かつ
端子接続具４の鍔部側からその凹部に嵌入させる（カシ
メる）ことにより、両者を係止した（図３（ｅ）及び
（ｆ）参照）。Next, a snap-type terminal connector 4 having a convex portion, a concave portion, and a flange portion made of SUS316L was placed on the surface of the support member 1 with the flange portion facing down. Then
From the conductive layer 2 side, a conductive fixture 6 having a convex portion and a flange portion made of SUS316L is passed through the conductive layer 2, the stretched film 7, the adhesive layer 9 and the support member 1, and is connected to a terminal. By fitting (caulking) into the recess from the flange portion side of the tool 4, both were locked (see FIGS. 3 (e) and 3 (f)).
【００８０】更に、導電性固定具６の鍔部下面に、アル
ミ蒸着されたポリエステルフィルムの片面に黒色印刷
し、印刷面と逆側に粘着層が設けられた絶縁層８を貼付
した（図３（ｇ）参照）。Further, on the lower surface of the flange portion of the conductive fixing member 6, black printing was performed on one side of an aluminum-evaporated polyester film, and an insulating layer 8 provided with an adhesive layer on the opposite side to the printed surface was attached (FIG. 3). (G)).
【００８１】この後、導電性粘着剤層（積水化成品工業
社製テクノゲル）３を貼付した後、６０mm×８０mmに裁
断して生体用電極を作成した（図３（ｈ）参照）。Thereafter, a conductive pressure-sensitive adhesive layer (Technogel manufactured by Sekisui Chemical Co., Ltd.) 3 was applied, and then cut into 60 mm × 80 mm to prepare a biomedical electrode (see FIG. 3 (h)).
【００８２】なお、図３（ａ）〜（ｈ）では、端子接続
具と支持部材との間、端子接続具と導電性固定具との
間、導電性固定具と導電層との間、絶縁層と導電性固定
具との間には空間が存在しているが、これは各構成部材
を明示するためであり、実際には空間は存在せず、各構
成部材は密着している。In FIGS. 3A to 3H, between the terminal connector and the support member, between the terminal connector and the conductive fixture, between the conductive fixture and the conductive layer, and between the terminal connector and the conductive layer. There is a space between the layer and the conductive fixture, but this is for the purpose of clarifying each component, and there is actually no space, and each component is in close contact.
【００８３】作成した電極を以下のようにして評価し
た。The prepared electrode was evaluated as follows.
【００８４】まず、電極１０の導電性粘着剤層面をＳＵ
Ｓ３０４製（鏡面仕上げ）の板（長さ×幅×厚さ＝１５
０ｍｍ×１００ｍｍ×１ｍｍ）１１の鏡面に貼付した。
図４（ａ）〜（ｃ）に示すように、ＳＵＳ製の板１１の
一部に鰐口クリップ１２で測定用のリード線１３を接続
した。同様に、電極の端子接続具４にコネクター１４を
介してリード線１５を接続した。両リード線を、図４
（ｄ）に示すように、発信器１６に接続し、これと並列
になるようにオシロスコープ１７を接続した。First, the surface of the conductive pressure-sensitive adhesive layer of the electrode 10 was SU
S304 (mirror finish) plate (length x width x thickness = 15
(0 mm × 100 mm × 1 mm).
As shown in FIGS. 4A to 4C, a lead wire 13 for measurement was connected to a part of a SUS plate 11 with a crocodile clip 12. Similarly, the lead wire 15 was connected to the electrode terminal connector 4 via the connector 14. Fig. 4
As shown in (d), the oscilloscope 17 was connected to the transmitter 16 and the oscilloscope 17 was connected in parallel with the oscillator 16.
【００８５】次いで、電極に０．０１０Ａ、１ｋＨｚの
電流を印加したとき、電極の端子接続具とＳＵＳ板の間
にかかる電圧をオシロスコープ１７で読みとり、以下の
式（オームの法則）により電極のインピーダンス値（初
期値）を求めた。Next, when a current of 0.010 A and 1 kHz is applied to the electrode, the voltage applied between the terminal connector of the electrode and the SUS plate is read by the oscilloscope 17, and the impedance value of the electrode (Ohm's law) is calculated by the following equation (Ohm's law). (Initial value).
【００８６】｜Ｚ｜＝Ｅ／Ｉ ｜Ｚ｜は、電極のインピーダンス値（Ω）であり、Ｅ
は、オシロスコープで読みとった電圧値（Ｖ）であり、
Ｉは、電極に印加した電流０．０１０（Ａ）である。| Z | = E / I | Z | is the impedance value (Ω) of the electrode.
Is the voltage value (V) read by the oscilloscope,
I is the current applied to the electrode, 0.010 (A).
【００８７】次に、端子接続具に３ｋｇの荷重をかけた
状態で電極のインピーダンス値を測定した。更に、荷重
を外して測定する動作を３回繰り返し、初期のインピー
ダンスと合わせて合計７回測定した。結果を表１に示
す。Next, the impedance value of the electrode was measured while a load of 3 kg was applied to the terminal connector. Furthermore, the operation of removing the load and measuring was repeated three times, and the measurement was performed seven times in total together with the initial impedance. Table 1 shows the results.
【００８８】実施例で使用した部材をまとめておく。 支持部材 ：架橋ポリエチレンフォーム 延伸フィルム ：ＰＥＴフィルム 導電層 ：カーボン 端子接続具 ：ＳＵＳ３１６Ｌ 導電性固定具 ：ＳＵＳ３１６Ｌ 絶縁層 ：粘着層／アルミ蒸着／ポリエステルフ
ィルム／黒色印刷層 導電性粘着剤 ：テクノゲル 比較例１ 延伸フィルム及び導電性固定具を使用せず、支持部材と
して厚さ７５μmのＰＥＴシートを使用し、端子接続具
の凸部を支持部材の表面に向けて導電層及び支持部材を
貫通させること以外は、実施例１と同様にして電極を形
成した。この電極は、特開平７−６７８４２号公報に記
載された電極とほぼ同じ構造を有している。得られた電
極を実施例１と同様にして評価した。結果を表１に示
す。 比較例２ 延伸フィルムを使用せず、支持部材として厚さ７５μm
のＰＥＴシートを使用すること以外は、実施例１と同様
にして電極を形成した。この電極は、特開平７−６７８
４２号公報に記載された電極とほぼ同じ構造を有してい
る。得られた電極を実施例１と同様にして評価した。結
果を表１に示す。The members used in the examples are summarized. Supporting member: Crosslinked polyethylene foam Stretched film: PET film Conductive layer: Carbon Terminal connector: SUS316L Conductive fixing device: SUS316L Insulating layer: Adhesive layer / aluminum deposition / polyester film / black print layer Conductive adhesive: Technogel Comparative Example 1 Without using a stretched film and a conductive fixture, using a 75 μm thick PET sheet as a support member, and penetrating the conductive layer and the support member with the convex portion of the terminal connector facing the surface of the support member. An electrode was formed in the same manner as in Example 1. This electrode has substantially the same structure as the electrode described in JP-A-7-67842. The obtained electrode was evaluated in the same manner as in Example 1. Table 1 shows the results. Comparative Example 2 Thickness of 75 μm as a support member without using a stretched film
An electrode was formed in the same manner as in Example 1 except that the PET sheet was used. This electrode is disclosed in JP-A-7-678.
It has almost the same structure as the electrode described in JP-A-42. The obtained electrode was evaluated in the same manner as in Example 1. Table 1 shows the results.
【００８９】なお、比較例１は、導電性固定具によるカ
シメ構造を有していない電極であり、比較例２はカシメ
構造を有しているものの支持部材が緩衝性を有していな
い電極である。Comparative Example 1 is an electrode having no caulking structure using a conductive fixing tool, and Comparative Example 2 is an electrode having a caulking structure but a supporting member having no buffering property. is there.
【００９０】[0090]
【表１】 [Table 1]
【００９１】実施例１では、荷重を繰り返しかけてもイ
ンピーダンス値の変化が生じなかった。In Example 1, the impedance value did not change even when the load was repeatedly applied.
【００９２】比較例１では、カシメ構造により固定され
ていないため、端子部分に繰り返し荷重をかけるとイン
ピーダンス値が変化した。更に、荷重するごとにインピ
ーダンス値が徐々に悪化し、３回目の荷重では初期値の
倍近くになった。In Comparative Example 1, since the terminals were not fixed by the caulking structure, the impedance value changed when a load was repeatedly applied to the terminal portion. Furthermore, the impedance value gradually deteriorated each time the load was applied, and became nearly twice the initial value with the third load.
【００９３】比較例２は、カシメ構造を有しているた
め、回数を重ねてもインピーダンス値の著しい悪化は生
じなかったが、荷重により値が変動した。Comparative Example 2 had a caulking structure, so that the impedance value did not significantly deteriorate even if the number of times was increased, but the value fluctuated due to the load.
【図１】本発明及び従来の電極の概略断面図である。FIG. 1 is a schematic sectional view of the present invention and a conventional electrode.
【図２】本発明の電極の概略断面図である。FIG. 2 is a schematic sectional view of an electrode of the present invention.
【図３】本発明の電極の概略工程断面図である。FIG. 3 is a schematic process sectional view of an electrode of the present invention.
【図４】電極のインピーダンスを測定するための回路図
である。FIG. 4 is a circuit diagram for measuring the impedance of an electrode.
【図５】従来の電極の概略断面図である。FIG. 5 is a schematic sectional view of a conventional electrode.
【図６】従来の電極の概略断面図である。FIG. 6 is a schematic sectional view of a conventional electrode.
【図７】従来の電極の概略断面図である。FIG. 7 is a schematic sectional view of a conventional electrode.
【図８】従来の電極の問題点を説明するための図であ
る。FIG. 8 is a diagram for explaining a problem of a conventional electrode.
１ 支持部材 ２ 導電層 ３ 導電性粘着剤層 ４ 端子接続具 ４ａ、５ａ 鍔部 ５ 固定具 ６ 導電性固定具 ７ 延伸フィルム ８ 絶縁層 ９ 接着剤層 １０ 電極 １１ ＳＵＳ製の板 １２ 鰐口クリップ １３、１５ リード線 １４ コネクター １６ 発信器 １７ オシロスコープ DESCRIPTION OF SYMBOLS 1 Support member 2 Conductive layer 3 Conductive adhesive layer 4 Terminal connector 4a, 5a Flange part 5 Fixture 6 Conductive fixture 7 Stretched film 8 Insulating layer 9 Adhesive layer 10 Electrode 11 SUS plate 12 Alligator clip 13 , 15 Lead wire 14 Connector 16 Transmitter 17 Oscilloscope
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ａ６１Ｎ 1/30 Ａ６１Ｂ 5/04 ３００Ｊ 1/36 17/39 ３３０ Ｆターム(参考） 4C053 BB04 BB06 BB22 HH02 HH04 JJ11 JJ32 4C060 KK32 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification symbol FI theme coat ゛ (reference) A61N 1/30 A61B 5/04 300J 1/36 17/39 330 F term (reference) 4C053 BB04 BB06 BB22 HH02 HH04 JJ11 JJ32 4C060 KK32
Claims (5)
有する柔軟基材からなる支持部材と、支持部材の裏面上
に設けられた導電層と、導電層上に設けられた導電性粘
着剤層と、凸部、凸部に対応する凹部及び凸部下端に鍔
部を有する端子接続具と、端子接続具の凹部に嵌合する
ことにより端子接続具を係止しうる凸部及び凸部下端に
鍔部を有する導電性固定具とを備え、端子接続具が、凸
部下端の鍔部を支持部材の表面と接するように設けら
れ、導電性固定具が、その凸部側が導電層側に位置する
ように設けられ、導電性固定具の凸部を導電層及び支持
部材を貫通させて端子接続具の凹部に嵌入することによ
り両具を係止し、端子接続具の鍔部が支持部材に陥入し
て支持部材に圧着されていることを特徴とする電極。1. A support member comprising a non-conductive, flexible substrate having a thickness of 0.3 mm or more and having elasticity, a conductive layer provided on a back surface of the support member, and a conductive layer provided on the conductive layer. A pressure-sensitive adhesive layer, a convex portion, a concave portion corresponding to the convex portion and a terminal connector having a flange at the lower end of the convex portion, and a convex portion capable of locking the terminal connector by fitting into the concave portion of the terminal connector. A conductive fixture having a flange at the lower end of the convex portion, and a terminal connector is provided so that the flange at the lower end of the convex portion is in contact with the surface of the support member; and the conductive fixture is electrically conductive on the convex side. The connector is provided so as to be positioned on the layer side, and the protrusions of the conductive fixture are penetrated through the conductive layer and the support member and are fitted into the recesses of the terminal connector, thereby locking the two components, and the flange portion of the terminal connector. Characterized in that the electrode is indented into the support member and pressed against the support member.
樹脂フィルムが積層されている請求項１に記載の電極。2. The electrode according to claim 1, wherein a stretched resin film is laminated between the support member and the conductive layer.
接着剤を介して積層されている請求項２に記載の電極。3. The electrode according to claim 2, wherein the support member and the stretched resin film are laminated via an adhesive.
の間に、鍔部の表面を覆う絶縁層を備える請求項１〜３
のいずれか１つに記載の電極。4. An insulating layer for covering the surface of the flange between the conductive adhesive layer and the flange of the conductive fixing device.
The electrode according to any one of the above.
のいずれか１つに記載の電極。5. The electrode according to claim 1, wherein the electrode is a living body electrode.
The electrode according to any one of the above.
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|---|---|---|---|
| JP2000117997A JP3717368B2 (en) | 2000-04-19 | 2000-04-19 | electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000117997A JP3717368B2 (en) | 2000-04-19 | 2000-04-19 | electrode |
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| Publication Number | Publication Date |
|---|---|
| JP2001299713A true JP2001299713A (en) | 2001-10-30 |
| JP3717368B2 JP3717368B2 (en) | 2005-11-16 |
Family
ID=18629216
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000117997A Expired - Lifetime JP3717368B2 (en) | 2000-04-19 | 2000-04-19 | electrode |
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