JPH0331450B2 - - Google Patents

Info

Publication number
JPH0331450B2
JPH0331450B2 JP62204084A JP20408487A JPH0331450B2 JP H0331450 B2 JPH0331450 B2 JP H0331450B2 JP 62204084 A JP62204084 A JP 62204084A JP 20408487 A JP20408487 A JP 20408487A JP H0331450 B2 JPH0331450 B2 JP H0331450B2
Authority
JP
Japan
Prior art keywords
electrode
activated carbon
sheet
bioinduction
carbon fiber
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.)
Expired - Lifetime
Application number
JP62204084A
Other languages
Japanese (ja)
Other versions
JPS6449539A (en
Inventor
Tadaharu Shimizu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fukuda Denshi Co Ltd
Original Assignee
Fukuda Denshi Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fukuda Denshi Co Ltd filed Critical Fukuda Denshi Co Ltd
Priority to JP62204084A priority Critical patent/JPS6449539A/en
Publication of JPS6449539A publication Critical patent/JPS6449539A/en
Publication of JPH0331450B2 publication Critical patent/JPH0331450B2/ja
Granted legal-status Critical Current

Links

Description

【発明の詳細な説明】[Detailed description of the invention]

[発明の利用分野] 本発明は生体表面に貼着して生体信号の抽出を
行なう生体誘導電極に関するものである。 [従来技術] 心電図測定、あるいは脳波測定中で、生体電極
を装着した状態でX線撮影を行なうには、電極部
をX線透過材料で構成しなければならなかつた。 このための従来のX線透過型の心電図測定用生
体誘導電極等には、結晶質の炭素繊維により構成
されていた。 [発明が解決しようとする問題点] しかし、従来の結晶質の炭素繊維は金属と比較
して抵抗値が大きく、電極部のインピーダンス、
分極電圧が高く、S/N比に難があり、望ましい
心電波形を得ることができなかつた。 [問題点を解決するための手段] 本発明は上述の問題点に鑑みて成されたもの
で、上述の問題点を解決する一手段として本発明
に係る一実施例は、電極部を非晶質の活性炭繊維
シートで構成する。 [作用] 以上の構成により、電極部のインピーダンスの
低い、分極電圧の低い高性能の生体誘導電極が提
供出来る。 [実施例] 以下、図面を参照して本発明に係る一実施例を
詳細に説明する。 第1図は本発明に係る一実施例の外観斜視図、
第2図は本実施例の側面図、第3図は本実施例の
底面図である。 図において、2は可撓性を有するカバーシート
であり、樹脂シート、発泡樹脂シート、不織布等
で構成することが望ましい。3はリング状の発泡
シートであり、ポリブタジエン、ポリエチレン等
で構成するのが望ましい。このカバーシート2と
発泡シート3のリングで形成される空間のカバー
シート側中央部には、リード線6の扇状尖端部と
電極シート部とで構成される電極構成部10が形
成され、この電極構成部10を含むリング内を充
填する如く電解物質9が充填されている。この電
解物質9は、塩化ナトリウムや塩化カリウム等を
含むゾル、ゲルであればよく、アクリル系含水ゲ
ル、カラヤガム系ゲルを用いることができる。 又、4は剥離紙であり、シリコン加工紙で構成
されている。剥離紙4は接着剤層5を介して発泡
シート3、電解物質9に接着されている。本実施
例よりの検出電位は電極構成部10の扇状尖端部
より炭素繊維束に塩化ビニルカバーを形成したリ
ード線6を通つてリード線6のコネクタ部7に送
られ、コネクタ部7より測定器等に送られ処理さ
れる。 このリード線先端部の構成図を第4図に示す。
図示の如く、リード線6の尖端部12を扇状に開
き、カバーシート2の中央部近傍に展開する。そ
して、この状態でカバーシート2側に接着剤を塗
布した発泡シート3を貼着する。このリード線6
の芯線の導電部は非晶質の炭素繊維に限るもので
はなく、従来の結晶質の炭素繊維により構成する
ことができる。この第4図に示す状態の電極部
に、第5図に示す本実施例の電極シート11を第
6図に示すように重ね合わせ、電極構成部10を
形成する。次に電極構成部10を形成した発泡シ
ート3のリング内に電極物質9を充填し、これに
接着剤層の塗布された剥離紙4を貼着して電極を
完成する。そして、この電極を使用するときに
は、剥離紙4を剥し、電極を生体表面に貼着すれ
ばよい。剥離紙4を剥すと、接着剤は電極部側に
残るため、生体と電極とを良好に密着保持するこ
とになる。 本実施例の電極シート11は、活性炭繊維を用
いて構成されており、この活性炭繊維を織り、織
物として第5図の如くに構成している。しかし、
この電極シート11はこの例に限るものではな
く、活性炭繊維を編み、編物として構成してもよ
く、又、不織布で構成してもよい。 上記各シートの製作方法は公知であるので説明
を省略する。いずれの方法を用いても得られる効
果にはほとんど差異が認められない。 本実施例では、活性炭繊維として以下に示す第
1表の物性を備えるノボロイド活性炭繊維を用い
ており、非常に優れた特徴を有している。
[Field of Application of the Invention] The present invention relates to a biological induction electrode that is attached to the surface of a living body to extract biological signals. [Prior Art] In order to perform X-ray photography with a bioelectrode attached during electrocardiogram measurement or electroencephalogram measurement, the electrode section must be made of an X-ray transparent material. Conventional X-ray transmissive electrocardiogram measurement bioinduction electrodes and the like for this purpose have been constructed of crystalline carbon fibers. [Problems to be solved by the invention] However, conventional crystalline carbon fibers have a large resistance value compared to metals, and the impedance of the electrode part,
The polarization voltage was high and the S/N ratio was poor, making it impossible to obtain a desired electrocardiographic waveform. [Means for Solving the Problems] The present invention has been made in view of the above-mentioned problems, and as a means for solving the above-mentioned problems, an embodiment of the present invention includes an electrode portion made of an amorphous material. Constructed of quality activated carbon fiber sheets. [Function] With the above configuration, it is possible to provide a high-performance bioinduction electrode with low impedance of the electrode portion and low polarization voltage. [Example] Hereinafter, an example according to the present invention will be described in detail with reference to the drawings. FIG. 1 is an external perspective view of an embodiment according to the present invention;
FIG. 2 is a side view of this embodiment, and FIG. 3 is a bottom view of this embodiment. In the figure, 2 is a flexible cover sheet, which is preferably made of a resin sheet, a foamed resin sheet, a nonwoven fabric, or the like. 3 is a ring-shaped foam sheet, which is preferably made of polybutadiene, polyethylene, or the like. In the central part of the space formed by the ring of the cover sheet 2 and the foamed sheet 3 on the cover sheet side, an electrode structure part 10 consisting of a fan-shaped tip of the lead wire 6 and an electrode sheet part is formed. An electrolytic substance 9 is filled so as to fill the inside of the ring including the component 10. The electrolyte 9 may be any sol or gel containing sodium chloride, potassium chloride, etc., and may be an acrylic hydrogel or a karaya gum gel. Further, 4 is a release paper, which is made of silicone processed paper. Release paper 4 is adhered to foam sheet 3 and electrolyte 9 via adhesive layer 5. The detected potential in this embodiment is sent from the fan-shaped tip of the electrode component 10 to the connector part 7 of the lead wire 6 through the lead wire 6 made of a carbon fiber bundle with a vinyl chloride cover, and from the connector part 7 to the measuring instrument. etc. for processing. A configuration diagram of the tip end of this lead wire is shown in FIG.
As shown in the figure, the tip end 12 of the lead wire 6 is opened in a fan shape and deployed near the center of the cover sheet 2. Then, in this state, the foam sheet 3 coated with adhesive is attached to the cover sheet 2 side. This lead wire 6
The conductive portion of the core wire is not limited to amorphous carbon fibers, but may be made of conventional crystalline carbon fibers. The electrode sheet 11 of this embodiment shown in FIG. 5 is superimposed on the electrode portion in the state shown in FIG. 4 as shown in FIG. 6 to form the electrode forming portion 10. Next, an electrode material 9 is filled into the ring of the foamed sheet 3 forming the electrode component 10, and a release paper 4 coated with an adhesive layer is attached thereto to complete the electrode. When using this electrode, the release paper 4 may be peeled off and the electrode may be attached to the surface of the living body. When the release paper 4 is peeled off, the adhesive remains on the electrode part side, so that the living body and the electrode are kept in close contact with each other. The electrode sheet 11 of this embodiment is constructed using activated carbon fibers, and the activated carbon fibers are woven into a fabric as shown in FIG. 5. but,
The electrode sheet 11 is not limited to this example, and may be constructed by knitting activated carbon fibers, or may be constructed from a nonwoven fabric. Since the manufacturing method of each of the above-mentioned sheets is well known, the explanation will be omitted. There is almost no difference in the effects obtained using either method. In this example, novoloid activated carbon fibers having the physical properties shown in Table 1 below are used as the activated carbon fibers, and have very excellent characteristics.

【表】 この本実施例の非晶質を用いた電極シートによ
り構成された電極と、電極シートのみを従来の結
晶質の炭素繊維で構成し、他は本実施例と同一の
構成を備えた電極との比較実験結果を以下に示
す。 以下の実験は、同一構成の2つの電極の生体へ
の貼着面同士を貼り合わせた電極対を1つの試料
としている。 第7図に示す測定回路で分極電圧を測定した結
果を第2表に、第8図に示す測定回路でインピー
ダンスを測定した結果を第3表に示す。なお、こ
の場合入力電圧は10VP-P、発振周波数10Hzとし
て測定した。
[Table] An electrode constructed from an electrode sheet using an amorphous material according to this example, and an electrode constructed from a conventional crystalline carbon fiber, with only the electrode sheet made of conventional crystalline carbon fiber, and the rest having the same structure as this example. The results of a comparative experiment with electrodes are shown below. In the following experiments, one sample is an electrode pair in which the surfaces of two electrodes with the same configuration that are attached to a living body are bonded to each other. Table 2 shows the results of measuring the polarization voltage with the measuring circuit shown in FIG. 7, and Table 3 shows the results of measuring the impedance with the measuring circuit shown in FIG. In this case, the input voltage was 10V PP and the oscillation frequency was 10Hz.

【表】【table】

【表】 第2表より明らかな如く、本実施例電極の平均
分極電圧は4.33mV、従来型の電極では平均18.5
mVであり、第3表より明らかな如く、本実施例
電極の平均インピーダンスは304Ω、従来型では
平均1060Ωである。 この様に、生体誘導電極の電極部を非晶質の活
性炭炭素繊維である、ノボロイド活性炭繊維を用
いることにより、以下の顕著な効果が得られた。 繊維の比面積が非常に大きく、電解物質との
接触面積が大きい。 繊維の細孔径が大きいため低分子から高分子
までの電解物質の吸着量及び範囲を広く出来
る。 これら、に示す様に、吸着性能の非常によ
い電極を形成できる。 繊維の中間分子吸着速度が殆ど瞬間的といつ
てよいほど速く、電解物質の吸着速度が速い。 以上の〜の特性等より、以下の、の顕
著な効果が得られる。 電極インピーダンスを低くすることができ
る。 電極の分極電圧を低くできる。 又、炭素繊維で電極及びリード線を構成したた
め、電極をX線透視可能とできる。 この様に、X線透視可能型電極として非常に高
性能の、信頼性の高い生体誘導電極を構成出来
る。 以上の説明においては、リード線付電極の例を
説明したが、本発明はこれに限るものではなく、
リード線の無いタイプの電極に使用することもで
きる。このリード線の無いタイプの電極の構成図
を第9図に示す。 第9図において、第1図〜第6図と同一構成に
ついては同一番号を付し、説明を省略する。 本実施例では、カバーシート部に替え、炭素を
成型した炭素成型部材15の上部にクリツプ等で
つまみ易い様に突起部16を設けている。そし
て、この炭素成型部材15に該炭素成型部材15
側に接着剤を塗布した発泡シート3を貼着する。
そして、この発泡シート3のリング内の中心部近
傍に本実施例の非晶質の活性炭繊維で形成された
電極シート11を密着させ、電極構成部を形成す
る。次に発泡シート3のリング内に電解物質9を
充填し、これに接着剤層の塗布された剥離紙4を
貼着して電極を完成する。そして、この電極を使
用するときには、剥離紙4を剥し、電極を生体表
面に貼着し、炭素成型部材15の上部の突起部1
6に測定器よりのリード線を接続すればよい。 この様に構成することにより、使い捨てタイプ
の生体誘導電極のリード線を省略することがで
き、省資源の面からも、非常に好ましいものとす
ることができる。 以上説明した如く本実施例によれば、電極部を
非晶質の活性炭炭素繊維である、ノボロイド活性
炭繊維を用いることにより、繊維の比面積が非常
に大きく、また繊維の細孔径が大きいため低分子
から高分子までの電解物質の吸着量及び範囲を広
くでき、更に繊維の中間分子吸着速度も殆ど瞬間
的といつてよいほど速く、電解物質の吸着速度が
速い吸着性能の非常によい電極を形成できる。 このため、電極インピーダンスの低い、分極電
圧の低く高性能高信頼性の電極とすることができ
る。 [発明の効果] 以上説明した如く本発明によれば、電極部を非
晶質の活性炭繊維シートで構成したので、電極イ
ンピーダンスの低い、分極電圧の低く高性能高信
頼性の生体誘導電極を提供できる。
[Table] As is clear from Table 2, the average polarization voltage of the electrode of this example was 4.33 mV, and the average of the conventional electrode was 18.5 mV.
mV, and as is clear from Table 3, the average impedance of the electrode of this embodiment is 304Ω, and the average impedance of the conventional type is 1060Ω. As described above, by using novoloid activated carbon fibers, which are amorphous activated carbon fibers, for the electrode portion of the bioinduction electrode, the following remarkable effects were obtained. The specific area of the fiber is very large, and the contact area with the electrolyte is large. Since the pore size of the fibers is large, it is possible to widen the adsorption amount and range of electrolytes ranging from low molecules to polymers. As shown in these figures, electrodes with very good adsorption performance can be formed. The adsorption speed of intermediate molecules on the fiber is so fast that it can be said to be almost instantaneous, and the adsorption speed of the electrolyte is fast. From the above characteristics of ~, etc., the following remarkable effects can be obtained. Electrode impedance can be lowered. The polarization voltage of the electrode can be lowered. Furthermore, since the electrodes and lead wires are made of carbon fiber, the electrodes can be viewed through X-rays. In this way, an extremely high-performance and highly reliable bioinduction electrode can be constructed as an X-ray transparent electrode. In the above explanation, an example of an electrode with a lead wire was explained, but the present invention is not limited to this.
It can also be used for electrodes without lead wires. FIG. 9 shows a configuration diagram of this type of electrode without lead wires. In FIG. 9, the same components as those in FIGS. 1 to 6 are designated by the same numbers, and the description thereof will be omitted. In this embodiment, instead of the cover sheet part, a protrusion 16 is provided on the upper part of a carbon molded member 15 made of carbon so that it can be easily grasped with a clip or the like. Then, the carbon molded member 15 is attached to the carbon molded member 15.
A foam sheet 3 coated with adhesive is attached to the side.
Then, the electrode sheet 11 formed of the amorphous activated carbon fiber of this embodiment is closely attached to the vicinity of the center of the ring of the foamed sheet 3 to form an electrode component. Next, an electrolyte 9 is filled in the ring of the foam sheet 3, and a release paper 4 coated with an adhesive layer is adhered thereto to complete the electrode. When using this electrode, the release paper 4 is peeled off, the electrode is attached to the surface of the living body, and the protrusion 1 on the upper part of the carbon molded member 15 is
6 should be connected to the lead wire from the measuring instrument. With this configuration, the lead wire of the disposable bioinduction electrode can be omitted, which is very preferable from the viewpoint of resource saving. As explained above, according to this embodiment, by using novoloid activated carbon fibers, which are amorphous activated carbon fibers, for the electrode portion, the specific area of the fibers is very large, and the pore diameter of the fibers is large, so that the We have created an electrode with very good adsorption performance that can widen the adsorption amount and range of electrolytic substances ranging from molecules to polymers, and the adsorption speed of intermediate molecules on fibers is so fast that it can be said to be almost instantaneous. Can be formed. Therefore, an electrode with low electrode impedance, low polarization voltage, and high performance and high reliability can be obtained. [Effects of the Invention] As explained above, according to the present invention, since the electrode portion is composed of an amorphous activated carbon fiber sheet, a bioinductive electrode with low electrode impedance, low polarization voltage, and high performance and high reliability is provided. can.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明に係る一実施例の外観斜視図、
第2図は本実施例の側面図、第3図は本実施例の
底面図、第4図は本実施例のリード線先端部の構
成図、第5図は本実施例の電極シートを示す図、
第6図は本実施例の電極シートとリード線との重
ね合わせ状態を示す図、第7図は本実施例の電極
対電圧の測定回路図、第8図は本実施例の電極対
インピーダンスの測定回路図、第9図は本発明に
係る他の実施例の構成図である。 図中、2……カバーシート、3……発泡シー
ト、4……剥離紙、5……接着剤層、6……リー
ド線、7……コネクタ部、9……電解物質、10
……電極構成部、11……電極シート、12……
リード線の尖端部、15……炭素成型部材、16
……突起部である。
FIG. 1 is an external perspective view of an embodiment according to the present invention;
Fig. 2 is a side view of this embodiment, Fig. 3 is a bottom view of this embodiment, Fig. 4 is a configuration diagram of the lead wire tip of this embodiment, and Fig. 5 is an electrode sheet of this embodiment. figure,
Fig. 6 is a diagram showing the overlapping state of the electrode sheet and lead wire of this embodiment, Fig. 7 is a circuit diagram for measuring the electrode-to-voltage of this embodiment, and Fig. 8 is a diagram of the electrode-to-impedance of this embodiment. The measurement circuit diagram, FIG. 9, is a configuration diagram of another embodiment according to the present invention. In the figure, 2... Cover sheet, 3... Foam sheet, 4... Release paper, 5... Adhesive layer, 6... Lead wire, 7... Connector part, 9... Electrolyte, 10
... Electrode component, 11 ... Electrode sheet, 12 ...
Tip of lead wire, 15...Carbon molded member, 16
...It is a protrusion.

Claims (1)

【特許請求の範囲】 1 生体表面に貼着して生体信号の抽出を行なう
生体誘導電極であつて、電極部を非晶質の活性炭
繊維シートで構成することを特徴とする生体誘導
電極。 2 活性炭繊維シートは活性炭繊維を織り、織物
として構成されていることを特徴とする特許請求
の範囲第1項記載の生体誘導電極。 3 活性炭繊維シートは活性炭繊維を編み、編物
として構成されていることを特徴とする特許請求
の範囲第1項記載の生体誘導電極。 4 活性炭繊維シートは不織布で構成されている
ことを特徴とする特許請求の範囲第1項記載の生
体誘導電極。
[Scope of Claims] 1. A bioinduction electrode that is attached to the surface of a living body to extract biosignals, the electrode portion being comprised of an amorphous activated carbon fiber sheet. 2. The bioinduction electrode according to claim 1, wherein the activated carbon fiber sheet is constructed as a fabric by weaving activated carbon fibers. 3. The bioinduction electrode according to claim 1, wherein the activated carbon fiber sheet is constructed by knitting activated carbon fibers. 4. The bioinduction electrode according to claim 1, wherein the activated carbon fiber sheet is made of a nonwoven fabric.
JP62204084A 1987-08-19 1987-08-19 Bioinductive electrode Granted JPS6449539A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62204084A JPS6449539A (en) 1987-08-19 1987-08-19 Bioinductive electrode

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62204084A JPS6449539A (en) 1987-08-19 1987-08-19 Bioinductive electrode

Publications (2)

Publication Number Publication Date
JPS6449539A JPS6449539A (en) 1989-02-27
JPH0331450B2 true JPH0331450B2 (en) 1991-05-07

Family

ID=16484519

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62204084A Granted JPS6449539A (en) 1987-08-19 1987-08-19 Bioinductive electrode

Country Status (1)

Country Link
JP (1) JPS6449539A (en)

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JPH05285114A (en) * 1992-04-06 1993-11-02 Fukuda Denshi Co Ltd Bioinduction electrode, its production and apparatus for production
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JP6444158B2 (en) * 2014-12-16 2018-12-26 国立研究開発法人科学技術振興機構 Electronic functional members, electronic components and wearable devices
JPWO2017203685A1 (en) 2016-05-27 2019-04-04 国立研究開発法人科学技術振興機構 Electronic functional members, electronic components and wearable devices
JP6532925B2 (en) * 2017-10-25 2019-06-19 帝国通信工業株式会社 Biological flexible circuit board with protective layer

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