CN201906357U

CN201906357U - Gel electrode

Info

Publication number: CN201906357U
Application number: CN2009901001517U
Authority: CN
Inventors: 吉川和宏; 藤田贵彦
Original assignee: Sekisui Plastics Co Ltd
Current assignee: Sekisui Kaseihin Kogyo KK; Sekisui Kasei Co Ltd
Priority date: 2008-03-28
Filing date: 2009-03-17
Publication date: 2011-07-27
Anticipated expiration: 2019-03-17
Also published as: JP2009240343A; JP5250287B2; WO2009119383A1

Abstract

The utility model provides a gel electrode which comprises a conducting layer arranged on a supporting substrate, wherein a region with a conducting gel adhesive layer and a region without a conducting gel adhesive layer are formed on the conducting layer, a wire and a reinforcing member are arranged on the region without the conducting gel adhesive layer, the reinforcing member is arranged on the wire, and the conducting layer is formed by a porous layer with an electric resistance below 20 Omega/20 mm.

Description

Gel electrode

Technical field

The present invention relates to a kind of gel electrode.More specifically, the present invention relates to a kind of gel electrode that has possessed the conductive layer that constitutes by porous body layer with specific resistance value.

Background technology

Use the gel electrode of cohesive gel, in the extensive fields of the electricity irritation utensil electricity consumption utmost point that electrocardiogram uses in electrode, muscular training etc., be utilized.

For example, various gel electrode have been reported in Japan's special fair 6-49076 communique (patent documentation 1), Japan's special permission No. 2821265 description (patent documentation 2), Japanese Unexamined Patent Application Publication 2006-517130 communique (patent documentation 3), the TOHKEMY 2001-204827 communique (patent documentation 4) etc.Disclosed gel electrode has following structure usually in these communiques: possess conductive layer and electric conductivity gel adhesive layer successively on supporting substrate, the part or the whole face of lead is inserted between conductive layer and the electric conductivity gel adhesive layer.

Patent documentation 1: the special fair 6-49076 communique of Japan

Patent documentation 2: No. 2821265 description of Japan's special permission

Patent documentation 3: Japanese Unexamined Patent Application Publication 2006-517130 communique

Patent documentation 4: TOHKEMY 2001-204827 communique

When peeling off, generally use lead to carry out from clung body (for example, skin) gel electrode of putting down in writing in the above-mentioned communique.But have following problem in this method: the conductor mounting root takes place damaged, or support base material is from the conductive layer perk, and lead becomes instability with contacting of conductive layer, and can't be situated between from the electric current of lead stably flows into clung body by electric conductivity gel adhesive layer.What expect from this problem is not use lead when clung body is peeled off, and is to use electric conductivity gel adhesive layer to peel off.But, electric conductivity gel adhesive layer because cohesive is high on finger strong binding, not welcome by user.In addition owing to directly contact electric conductivity gel adhesive layer, so sometimes through repeatedly peel off and paste after the cohesive of this layer can descend.

Summary of the invention

So, by the present invention, a kind of gel electrode is provided, wherein, on support base material, has conductive layer, be provided with zone that possesses electric conductivity gel adhesive layer and the zone that does not possess electric conductivity gel adhesive layer on described conductive layer, be provided with lead and girth member thereon on the zone that does not possess described electric conductivity gel adhesive layer, described conductive layer is formed by the porous body layer of the resistance value with 20 Ω/below the 20mm.

By the present invention, when can being provided, a kind of use is not easy breakage, through the few gel electrode of life-time service also performance degradation.In addition, can also provide a kind of and in wide frequency range, obtain uniform CURRENT DISTRIBUTION, have the gel electrode of stable electrical property.

Description of drawings

Fig. 1～Fig. 3 is the schematic plan view of gel electrode of the present invention.

Fig. 4～Fig. 7 is the sketch map of the manufacturing process of gel electrode of the present invention.

Fig. 8 is the schematic circuit diagram of the algoscopy of impedance.

Fig. 9～Figure 10 is the schematic circuit diagram of the algoscopy of distribution of impedance.

Figure 11～Figure 12 is the sketch map of the gel electrode of comparative example 1.

Figure 13 is the key diagram of distribution of impedance of the gel electrode of embodiment 1 and comparative example 1.Label declaration

1 conductive layer

2 electric conductivity gel adhesive layers

3 girth members

4 leads

5 terminals

6 support base materials

7 two sides stripping films

8 barrier films

10 battery lead plates

11 gel electrode

12 electrode terminals

13 measuring points

14 adhesive phases

The specific embodiment

Gel electrode of the present invention is particularly useful for reusable purposes.As such purposes, can enumerate the industrial electrode that electricity irritation is used electrode with electrode, eliminostatic with organisms such as electrodes with electrode, electrocardiogram and used electrode as detection.Wherein, preferably be used in the organism electrode.

(formation of gel electrode)

Gel electrode of the present invention has support base material, conductive layer, electric conductivity gel adhesive layer, lead and girth member.Conductive layer is positioned on the support base material, and electric conductivity gel adhesive layer and lead are positioned on the conductive layer.In addition, have zone that possesses electric conductivity gel adhesive layer and the zone that does not possess electric conductivity gel adhesive layer on the conductive layer.And lead is positioned on the conductive layer area that does not possess electric conductivity gel adhesive layer.In addition, girth member is positioned on the lead.At this, conductive layer is formed by the porous body layer of the resistance value with 20 Ω/below the 20mm.

In the gel electrode, lead is positioned on the zone of the conductive layer that does not possess electric conductivity gel adhesive layer, and girth member is positioned on the lead.That is,,, also can suppress the breakage of perk, support base material and the conductive layer of lead even if user uses lead that gel electrode is peeled off owing to make lead between conductive layer and electric conductivity gel adhesive layer unlike gel electrode in the past.In addition, owing to used the conductive layer of specific resistance value, so even unlike in the past, on whole of electric conductivity gel adhesive layer, disposed lead, also can be to the bonded body competent electric current that circulates.

The flat shape of gel electrode does not have special restriction.For example, can at random set square, circle, ellipse etc. for.And the conductive layer area that does not possess electric conductivity gel adhesive layer that lead was positioned at (square end portion) can be the projection of extending from the part in the zone that possesses electric conductivity gel adhesive layer, can not be projection also.During for projection, peeling off of gel electrode is easier.For this projection, can also give the function of the portion of the handle when peeling off gel electrode and the function of giving fixing cord.And the conductive layer area that does not preferably possess electric conductivity gel adhesive layer accounts for 2.5～25% area of whole of gel electrode.

Lead is positioned on the conductive layer area that does not possess electric conductivity gel adhesive layer, and supply place of electric current is specific, even but specific, because of conductive layer has specific resistance value, so also can easily supply with electric current to whole of gel electrode.

As the flat shape of gel electrode, for example can enumerate Fig. 1～formation shown in Figure 3.These formations are the examples with formation of above-mentioned shape for lugs.Among the figure, 1 expression conductive layer, 2 expression electric conductivity gel adhesive layers, 3 expression girth members, 4 expression leads, 5 expression terminals.The flat shape of electric conductivity gel adhesive layer is square roughly among Fig. 1, is rectangle among Fig. 2, is circular among Fig. 3.In these gel electrode, because the part that is positioned at of girth member 3 is a shape for lugs, therefore, the portion of the handle when can be used as the peeling off of gel electrode uses.

Electric conductivity gel adhesive layer can have the barrier film that is used to protect gel surface.

(manufacture method of gel electrode)

With the example that constitutes of Fig. 1, the manufacture method of gel electrode is described in conjunction with Fig. 4～Fig. 7.

At first, stacked conductive layer 1 on support base material 6.In order to firmly fix conductive layer 1, electric conductivity gel adhesive layer 2 and support base material 6 more, on support base material 6, can have adhesive layer.Then, the stack of the end layers on conductive layer 1 firmware 3.At this, for the lead 4 that easily forms the back, but on the end between girth member 3 and the conductive layer 1 clamping two sides stripping film 7.In addition, in order to firmly fix support base material 6, conductive layer 1 and girth member 3 and lead 4 more, on the surface of conductive layer 1 side of girth member 3, can have adhesive layer.In addition, can carry out thermal welding, girth member 3 is firmly fixed on support base material 6 and the conductive layer 1 by end to the inboard of girth member 3 and support base material 6.

Then, electric conductivity gel adhesive layer 2 is laminated on the conductive layer 1.Electric conductivity gel adhesive layer 2 also can extend existence on girth member 3.Consider the easiness of peeling off of gel electrode, girth member 3 preferably its area below 50% is covered by electric conductivity gel adhesive layer 2.By these operations, obtain the formation of Fig. 5 of the plane graph of Fig. 4 and profile thereof.And, also can be on electric conductivity gel adhesive layer 2 stacked barrier film 8.

Afterwards, remove two sides stripping film 7, lead 4 is clamped between girth member 3 and the conductive layer 1, by this part of thermal welding, lead 4 is fixed on the gel electrode as required.By these operations, can form the gel electrode shown in Figure 7 of plane graph and the profile thereof of Fig. 6.

Below each parts that constitutes gel electrode are described.

(electric conductivity gel adhesive layer)

Electric conductivity gel adhesive layer can use has fusible electroconductive polymer gel.Have cohesive and be meant, on the interface of bonded surface, be stained with profit well and driving fit equably, and electric conductivity gel adhesive layer can be damaged when peeling off.Have so fusible electric conductivity gel adhesive layer by use, equably driving fit in bonded body (for example, skin on) the surface, and when gel electrode applied electric current, can the high efficiency of transmission electric energy.And electric conductivity gel adhesive layer can be not damaged when peeling off, and can repeat to peel off, paste.

Preferably, electric conductivity gel adhesive layer has the thickness of 100～2500 μ m.

In the electric conductivity gel adhesive, preferably use in making the macromolecule matrix (matrix) of polymerizable monomer and cross-linking monomer copolymerization, contain the electroconductive polymer gel of plasticizer, solvent composition, electrolytic salt.

(1) polymerizable monomer

As polymerizable monomer,, then there is not special restriction as long as have a monomer with carbon-to-carbon double bond of polymerism at intramolecularly.For example can enumerate (methyl) acrylic acid, maleic acid, fumaric acid. (methyl) acrylic acid derivative of itaconic acid .beta.-methylacrylic acid, (gathering) (methyl) acrylic acid glycol ester, (gathering) (methyl) acrylic acid propylene glycol ester, (gathering) (methyl) acrylic acid glyceride etc.; (methyl) acrylamide, N-methyl (methyl) acrylamide, N-ethyl (methyl) acrylamide, N-propyl group (methyl) acrylamide, N-butyl (methyl) acrylamide, N, N-dimethyl (methyl) acrylamide, N, N-diethyl (methyl) acrylamide, N hydroxymethyl acrylamide, the levulinic dimethomorph, N-[2-(2-methyl-4-oxopentyl), N, N-dimethyl amine propyl group (methyl) acrylamide and its salt, (methyl) acrylamide derivative of acrylamido tert-butyl group sulfonic acid and its salt etc., the N-vinyl pyrrolidone, the N-vinyl formamide, the N-vinyl amine derivative of N-vinyl acetamide etc., vinyl sulfonic acid, the sulfonic acid class monomer of acrylic sulfonic acid and salt thereof etc.These monomers can only use a kind of, also can make up two or more uses.And in the above-mentioned illustration, (methyl) acrylic is meant acrylic or methylpropenyl.

(2) cross-linkable monomer

As cross-linkable monomer, preferably use at intramolecularly to have the monomer that has two keys of polymerism more than two.Particularly, can enumerate polynary (methyl) acrylamide such as two (methyl) acrylamides of di-2-ethylhexylphosphine oxide (methyl) acrylamide, inferior ethylene, (gathering) two (methyl) acrylic acid glycol ester, (gathering) two (methyl) acrylic acid propylene glycol ester, two (methyl) acrylic acid glyceride, three (methyl) acrylic acid glyceride etc. or (methyl) acrylate, tetraene propoxyl group ethane, diallyl ammonium chloride etc.These monomers can only be suitable for a kind of, or make up two or more the use.

(3) plasticizer

As plasticizer, preferably use and improve plastic polyhydric alcohol.In addition, preferably use the retentivity with solvent composition, the also polyhydric alcohol that plays a role as wetting agent.By containing plasticizer and can make gel have good viscoelasticity at macromolecule matrix.

As polyhydric alcohol, can make dihydroxylic alcohols such as spent glycol, propylene glycol ester, butanediol, pentanediol; The polyalcohols that binary such as glycerol, tetramethylolmethane, sorbitol are above; Polyhydric alcohol such as Polyethylene Glycol, polyglycereol condensation polymer; The polyalcohol modified body of polyoxyethylene glycerol etc. etc.These polyhydric alcohol can only use a kind of, also can make up two or more uses.From the viewpoint of the viscoelastic property that keeps gel, guarantee to improve the viewpoint of the transparency of the gelinite after the polyreaction on the viewpoint of the operability when making, preferably be aqueous at normal temperatures in these polyhydric alcohol.As this polyhydric alcohol, can enumerate glycerol, polyglycereol etc.

(4) solvent composition

As solvent composition, boiling point height preferably, the polar solvent of low-vapor pressure under the room temperature preferably has the material of intermiscibility with polymerizable monomer and cross-linkable monomer.As solvent composition, can enumerate alcohols such as water, methanol, ethanol, isopropyl alcohol; Cellosolve classes such as methyl cellosolve, ethyl cellosolve, butyl cellosolve; N, dinethylformamide, N,N-dimethylacetamide, N, amines such as N '-dimethyl-2-imidazolone, N-N-methyl-2-2-pyrrolidone N-; Sulfolane, dimethyl sulfoxide etc.These solvent compositions can only use a kind of, two or more uses also capable of being combined.Also can mix.In addition, solvent composition preferably contains the above water of 10 weight % of total amount.

(5) electrolytic salt

The electric conductivity of electric conductivity gel adhesive layer contains electrolytic salt by gel and obtains.

As electrolytic salt, can use the alkali halide metal of sodium halide, potassium halide, magnesium halide, calcium halide etc., the halogenide of halogenation alkaline-earth metal or other metals, the hypochlorite of various metals, chlorite, chlorate, perchlorate, sulfate, nitrate, phosphate, ammonium salt, inorganic salts such as various complex salt, unary organic carboxylic acid's salt such as acetic acid, benzoic acid, lactic acid, tartaric acid, the salt that the monovalence of the polybasic carboxylic acid of fumaric acid, succinic acid, adipic acid, citric acid etc. or bivalence are above; The organic acid slaine and the organic ammonium salt of sulfonic acid, aminoacid etc., the electrolytical salt of macromolecule such as poly-(methyl) acrylic acid, polyvinylsulfonic acid, polyacrylamide base tert-butyl group sulfonic acid, PAH, polyvinylamine.These electrolytic salts can only use a kind of, two or more uses also capable of being combined.

(6) other additives

In the gel, can suitably add other additives such as antiseptic, antibacterial, antienzyme agent, antirust agent, antioxidant, stabilizing agent, pH adjustment agent, spice, surfactant, coloring agent as required.Form the method for macromolecule matrix after in fluid,matching dissolving being arranged in advance or disperse other additives as adding method, and the method for behind the high-molecular gel of temporary transient generation, adding.

(7) concentration of macromolecule matrix

With respect to electric conductivity gel adhesive stratum total, preferably contain 5～50 weight %, the more preferably macromolecule matrix of the formation electric conductivity gel adhesive layer of 5～40 weight %.During less than 5 weight %, the concentration of the gel-in-matrix that obtains is low, and solvent composition oozes out because of failing to be used up easily fully, thereby might become the gel of toughness weak strength.On the other hand, when surpassing 50 weight %, the heating during polymerization is excessive, might surpass the boiling point of solvent and seethes with excitement, so there is problem on making.In addition, because boiling the time will be sneaked into bubble, so when destroying the transparency sometimes, can not obtain good gel.

(8) addition of cross-linkable monomer

With respect to the macromolecule matrix total amount, the addition of cross-linkable monomer is 0.05～10 weight % preferably.Therefore during less than 0.05 weight %, the crosslink density step-down causes the shortage of shape stability sometimes.In addition, when surpassing 10 weight %, might become not only hard but also crisp gel.And when being this gel, when polymerization crosslinking, will producing nebulousurineization sometimes and destroy the transparency, can't obtain good gel.

(9) concentration of plasticizer

The concentration of the plasticizer in the gel, preferably 10～80 weight %, more preferably 20～70 weight %.During less than 10 weight %, the wetting power of gel (solvent retentivity) is poor, in the time of the ageing stability of shortcoming gel, and the shortcoming flexibility, it is many to be difficult to give fusible situation when the needs cohesive.In addition, when surpassing 80 weight %, relatively, the concentration of macromolecule matrix and solvent composition might diminish.

(10) concentration of solvent composition

The concentration of solvent composition, preferably 5～50 weight %, more preferably 5～40 weight %.During less than 5 weight %, gel becomes low flexible (high rigidity), and the interpolation of electrolytic salt becomes difficulty, so can't obtain good electrical conductivity sometimes.On the other hand, when surpassing 50 weight %, considerably beyond the balance solvent maintenance dose of gel, therefore produce oozing out of solvent composition etc. sometimes sometimes.In addition, the solvent composition that is not all kept can flow out sometimes, make gel through the time rerum natura change to become greatly.

(11) concentration of electrolytic salt

The concentration of electrolytic salt, preferably 0.05～13 weight %, more preferably 0.1～10 weight %.When surpassing 13 weight %, the dissolving of electrolytic salt becomes difficulty, therefore might crystalline separating out be taken place in gel inside, hinders the dissolving of other compositions.In addition, even add the salt that surpasses 13 weight % in fact, also can become the ionization boundary, in other words electric conductivity becomes maximum, so consider not preferred from the viewpoint of cost.In addition, during less than 0.05 weight %, can't obtain sufficient electric conductivity.

(12) manufacture method of electric conductivity gel adhesive layer

Electric conductivity gel adhesive layer can to the dissolving or homodisperse the monomer fluid,matching of polymerizable monomer, cross-linkable monomer, plasticizer, solvent composition, electrolytic salt and selectable polymerization initiator, heat or ultraviolet radiation with known method, obtain thereby carry out polymerization crosslinking.In addition, can be in preformed macromolecule matrix, impregnation wetting agent and solvent etc.And, can also only carry out polymerization and obtain macromolecule polymerizable monomer, in the polymer fluid,matching that obtains to dissolving or homodisperse wetting agent, solvent etc., added then in the mixed liquor of cross-linking agent and selectable catalyst and flooded macromolecule, made macromolecule and cross-linking agent generation cross-linking reaction and form electric conductivity gel adhesive layer.

When the monomer fluid,matching was aqueous, for example the resin die by flowing into molding etc. made its polymerization crosslinking just can obtain the electric conductivity gel adhesive layer of arbitrary shape.

In addition, can also make its polymerization crosslinking by 2 intermembranous inflow monomer fluid,matchings, thereby obtain flaky electric conductivity gel adhesive layer to the certain interval of maintenance.

And, can also be on film the monomer fluid,matching be used silk screen printing etc. to be printed to heat with known method immediately after the arbitrary shape or ultraviolet radiation and make its polymerization crosslinking, thereby obtain the electric conductivity gel adhesive layer of arbitrary shape.

(support base material)

Support base material is the substrate sheets as the surperficial material use of gel electrode, and is preferably soft and non-conductive.Especially preferably have sufficient flexibility and hot strength as gel electrode.As support base material, for example can enumerate polyethylene terephthalate (PET) non-woven fabrics, polypropylene (PP) non-woven fabrics, fiber-like non-woven fabrics, artificial silk class non-woven fabrics, polychloroethylene film, polyethylene (PE) film, polypropylene (PP) film, acrylic resin film etc.Wherein, preferred high and softish polypropylene (PP) spun-bonded non-woven fabrics of hot strength that is to use.And, the thickness of support base material there is not specific limited, for example can between 10～500 μ m, suitably set.

(conductive layer)

Conductive layer is the porous body layer with the following resistance value of 20 Ω/20mm, as long as can unhinderedly switch on to bonded body by softish electric conductivity gel adhesive layer, does not then have special restriction.For example can adopt the fabric, the cloth that become by the silk weaving of conductive plated, or the fabric, the cloth that become by the silk weaving that contains conductive fiber, or the fabric that is made into by conductive fiber, cloth etc.As the material of conductive layer being given electric conductivity, for example can enumerate silver, silver-silver chloride chemical compound, rustless steel, titanium, nickel, molybdenum, white carbon black, graphite etc.Can contain one or more of these materials in the conductive layer.In these conductive layers, electroplate non-directional, the low resistance of electric conductivity of the fabric that the silk weaving of fiber becomes by containing metal, and have morphotropism and flexibility.Therefore, be not bonded in the bonded body (for example, skin) that the surface is curved surface with can having sense of discomfort.Electric conductivity has directivity, then might cause the electrical characteristics of electrode inhomogeneous.

Preferred conductive layer is the fabric of tulle (Tulle) braiding.Tulle fabric split shed portion can reduce the difference of the directivity of electric conductivity when having hexagon, so preferred.And conductive layer preferably has 40～80% aperture opening ratio.The aperture opening ratio of this scope can make the zygosity of the electric conductivity of conductive layer, the zygosity that reaches support base material and electric conductivity gel adhesive layer and support base material and girth member and deposit.

(lead)

Lead is not because directly contact with the electric conductivity gel adhesive layer with metal protection in the present invention, so be not limited to can use any lead that uses in this field as stainless corrosion resistance material.The material of lead for example can be enumerated rustless steel, copper, silver, gold, carbon etc.Since the little material that preferably constitutes of resistance by metal wire rod, the metal wire rod that preferably has the following resistance value of 4 Ω/cm.Little from resistance, the heating in the time of can suppressing to use, the sense of discomfort when softness and use gel electrode is few, and the viewpoint that reduces cost is set out the especially preferred copper that is to use.The outside line of lead directly is preferably the scope of 0.2～1.0mm.Overlapping 5～the 20mm of lead and conductive layer preferably.

The outer part of the gel electrode of lead can be covered by resin.The external diameter that is capped is preferably 0.5～2.0mm.

(girth member)

As girth member, no specific limited for example can be enumerated the vistanex of polyethylene, polypropylene etc., the mylar of polyethylene terephthalate, poly phthalate etc.The thickness of girth member for example can be made as 25～125 μ m.

In order on the surface of girth member, to engage conductive layer and support base material and girth member more securely, can possess adhesive layer.Adhesive layer for example can use the layer of being made up of hot-melt adhesive.

(barrier film)

As barrier film, be not particularly limited, for example can use by vistanex the film that the mylar of polyethylene terephthalate, poly phthalate etc. constitutes through the polyethylene of organosilicon lift-off processing, polypropylene etc.

(two sides stripping film)

As the two sides stripping film, be not particularly limited, for example can use by vistanex the sheet that the mylar of polyethylene terephthalate, poly phthalate etc. constitutes through the polyethylene of organosilicon lift-off processing, polypropylene etc.

Embodiment

Below, by embodiment the present invention is described in further detail, but the present invention is not subjected to the qualification of these embodiment.And the assay method of the intensity 3kg stationary load of impedance, the distribution of impedance after the resistance value of the conductive layer of measuring in embodiment and the comparative example, the aperture opening ratio of conductive layer, first impedance, 100 stickups are peeled off, the situation of pasting the lead installation root portion after peeling off for 30 times, lead mounting portion is as described below.

(resistance value of conductive layer)

As test sample, cut the section of 3 leaf length 50mm * width 20mm from the employed material of conductive layer.During this cut, the length direction of section was as direction A.And, to become the mode of length direction, cut the section of 3 leaf length 50mm * width 20mm with the orthogonal direction B of direction A.It with length direction the resistance value of go-and-retum of length direction of the test sample of A and B, use LCR instrument (ELC-131D that custom company makes), 1kHz measures with frequency, with the addition meansigma methods of the measured value of all directions resistance value as all directions.This resistance value is to use the tools for measurement of two width 20mm, clamped sample full duration 20mm and the value measured.Unit is Ω/20mm.

The resistance value of conductive layer is in any direction among A and the B, is necessary for 20 Ω/below the 20mm.10 Ω/below the 20mm preferably.

(aperture opening ratio of conductive layer)

To indulge the conductive layer of 50mm * horizontal 50mm and place in the plane, absorb 15～20 times enlarged photograph, try to achieve area with respect to the peristome of the entire area on the photo.By the area of entire area and peristome, calculate percent opening by following formula.

Aperture opening ratio (%)=peristome area/entire area * 100

(resistance value of lead)

To use LCR instrument (custom company makes ELC-131D) to the resistance value of the go-and-retum of the lead of length 5cm, the value of measuring with frequency 1kHz divided by 5, has been calculated resistance value in the middle of the lead 1cm (Ω/cm).

(first impedance)

The circuit diagram of measuring as shown in Figure 8.Measure following carrying out.That is, battery lead plate 10 (SUS plate) is used the abundant wiping of ethanol, carry out defat and dry.Then, on battery lead plate 10, paste gel electrode 11, the voltage Vb when measuring

battery lead plate

10 and 4 in lead and applying the electric current of 1KHz frequency, 10 μ A.Calculate impedance by the voltage that obtains.

Battery lead plate is used the abundant wiping of ethanol, carry out defat and dry.Then, on battery lead plate, paste gel electrode.After 1 minute, catch the Handheld Division to peel off.Wherein, because comparative example 1 and 2 does not have the Handheld Division, so catch the gel of end to peel off.Repeat 100 times.Then, stick on the battery lead plate after, similarly calculate impedance with above-mentioned first impedance.

(distribution of impedance)

That measures illustrates in Fig. 9 and Figure 10.Fig. 9 represents measuring point, and Figure 10 is the circuit diagram of measuring.Measure following carrying out.That is, electrode terminal 12 (SUS terminal, φ 6mm) is used the abundant wiping of ethanol, carry out defat and dry.Then, electrode terminal 12 is sticked on the gel electrode 11, be determined at 4 in electrode terminal 12 and lead and apply voltage Vb when making frequency change electric current between 10Hz～100KHz, 10 μ A.Calculate impedance by the voltage that obtains.This is calculated is that 50 measuring point 13 for as shown in Figure 9 carries out.

(lead after 30 stickups are peeled off is installed the situation of root portion)

Gel electrode is sticked on the human body skin that uses the ethanol scouring, catch wire portion to peel off.After its repetition 30 times, observe the damaged situation of the installation root portion of lead installation portion.

(the intensity 3kg stationary load of lead mounting portion)

Use clamp to grip at 2 places with two ends lead mounting portion opposition side gel electrode, load the stationary load of 3kg on the vertical direction of lead.Measure the time of lead installation portion till fracture.

The making example of the macromolecule hydrogel that uses in embodiment 1～3 and the comparative example 1～3

At first, will be as the acrylamide (MI) and the N of polymerizable monomer, N-DMAA (M2), N as cross-linkable monomer, N-di-2-ethylhexylphosphine oxide third rare amide (CI), as the sodium chloride (N) of electrolytic salt, adjust the citric acid Na of agent as pH: 1: 1 mixture of citric acid (N2) (G2) cooperates as the glycerol (G) and the polyglycereol (aggressiveness) of wetting agent.Add ion exchange water as solvent in the coordination compound that obtains as 100 weight %.Dissolving is stirred the mixture that obtains and has been obtained the monomer fluid,matching.Then, with respect to monomer fluid,matching 100 weight portions, add the 1-hydroxyl-cyclohexyl benzophenone as Photoepolymerizationinitiater initiater (trade name IRGACURE 184, and Ciba Specialty Chemicals company makes) of 0.3 weight portion, and carry out stirring and dissolving.Table 1 expression constitutes the use level of each composition of the monomer fluid,matching that uses in embodiment 1～3 and the comparative example 1～3.Wherein, the numerical value of table 1 is the weight % with respect to the fluid,matching total amount of having added ion exchange water.

With the monomer fluid,matching that obtains, after the initial stage temperature is adjusted to 25 ℃, on the polyethylene terephthalate film of handling through the organosilicon demoulding, launch thinly.Then, on this film side, place the pad of thickness 1.0mm, further carry the polyethylene terephthalate film of handling through the organosilicon demoulding.Afterwards, the ultraviolet to 60 seconds 50mW/cm2 intensity of monomer fluid,matching irradiation carries out monomeric polymerization and cross-linking reaction, thereby has obtained the lamellar electric conductivity gel adhesive layer of thickness 1.0mm.

Embodiment 1～3 (making of gel electrode)

At PP (polypropylene) spun-bonded non-woven fabrics (mesh 70g/m ², new and society makes) single face on, be coated with 40g/m ²The hotmelt (Toyo Ink is made society and made BPS4668) of (during drying) makes its drying, makes non-woven fabrics adhesive glue band (support base material) 6.Stacked thereon by tulle braiding silver electroplate silk and the conductive layer 1 that constitutes of conductive fiber (SE-200-5 that Seiren company makes, aperture opening ratio 62%).Its severing is become length 70mm * width 50mm.Further, pasted the length 25mm * width 50mm that makes in advance, the girth member 3 (girth member spins the system PEACHCOAT of society day clearly) that constitutes by the PET film of thickness 75 μ m at its end part aligning width.On the single face of girth member 3, coating 40g/m ²The hotmelt of (dry time) (Toyo Ink is made society and made BPS4668) has formed the layer of drying.Then, on the adhesive surface of girth member 3, partition (two sides stripping film) that the two sides is handled through the organosilicon demoulding 7 disposes from the end with the 15mm width.Again with the width 10mm of the center side of girth member 3, by heat sealing machine with 160 ℃ of temperature, thermal welding in 2 seconds and girth member 3 is firmly fixed on the non-woven fabrics.Further, will cut into length 55mm * width 50mm after, above-mentioned electric conductivity gel adhesive layer 2 alignment width on 1 of conductive layer is pasted in the mode of striding girth member 3 about 10mm from the end.The duplexer that obtains is cut into as shown in Figure 4 offset electrode shape.Further, remove the partition 7 of Offset portion, lead 4 be held between girth member 3 and the conductive layer 1, with this part by heat sealing machine with 160 ℃ of temperature, carry out thermal welding 4 seconds, thus lead 4 is securely fixed on the offset portion.The lead kind is as shown in table 1.

By above-mentioned operation, obtained gel electrode shown in Figure 6.

Comparative example 1

On the single face of the PP identical with embodiment (polypropylene) spun-bonded non-woven fabrics (support base material) 6, coated heat melt adhesive (Toyo Ink make society make BPS4668) makes it dry and form adhesive phase 14, makes non-woven fabrics adhesive glue band thus.Other has prepared to mix the conductive layer 1 that film (Kureha Elastomer company makes EB90NES) constitutes by carbon.Respectively its severing is become length 50mm * width 50mm, paste as Figure 11 and ground shown in Figure 12 clamping lead 4.Further, the alignment width has been pasted the above-mentioned electric conductivity gel adhesive layer 2 that cuts into length 50mm * width 50mm on conductive layer 1.Further, on electric conductivity gel adhesive layer 2, pasted barrier film 8.The lead kind is as shown in table 1.

Obtained gel electrode by above-mentioned operation.

Comparative example 2

But use the conductive fiber (SE-200-5 that Seiren company makes) except replacing carbon to mix film, obtained gel electrode in the mode identical with comparative example 1.

Table 1

The measurement result of the intensity 3kg stationary load of the first impedance of the resistance value of the conductive layer of the gel electrode that obtains, gel electrode, the situation of pasting impedance and lead installation root portion after peeling off for 100 times, lead mounting portion is shown in table 2.

Table 2

As known from Table 2, compare with comparative example 1 and 2, the lead of the gel electrode of embodiment is fixed more firmly, so suppressed the variation of impedance.

For the gel electrode of embodiment 1 and comparative example 1, the distribution of impedance of its 50 positions of expression in Figure 13 (a) reaches (b).The table in the left side of Figure 13 (a) is the measured value of distribution of impedance of each frequency of the gel electrode of comparative example 1, and the figure on right side is that it is graphical.The table in the left side of Figure 13 (b) is the measured value of distribution of impedance of each frequency of the gel electrode of embodiment 1, and the figure on right side is its pictorialization.From these figure as can be known, the gel electrode of embodiment 1 is all obtaining impedance uniformly on whole of gel electrode on any frequency.

To the gel electrode that obtains in

embodiment

1 and 3, use high output electricity irritation machine (she Teng Chaoduanboshe makes ES-520) to measure the initial stage temperature and the temperature after 10 minutes of gel electrode.Under following condition, (Thermography) measured the temperature rising by thermography.

The output of electrical stimulation device: 5kHz, 30mA

Use the position: abdominal part

Use the gel electrode size: 50 * 50

The result is as shown in table 3.

Table 3

?	Embodiment 1	Embodiment 3
			The periphery temperature rises	30.5℃→31.8℃(+1.3℃)	30.5℃→31.5℃(+1.0℃)
The central part temperature rises	30.5℃→31.8℃(+1.3℃)	30.5℃→31.5℃(+1.0℃)
			The portion of terminal temperature rises	28.0℃→37.1℃(+8.9℃)	28.0℃→29.3℃(+1.3℃)

From above-mentioned table 3 as can be known, the gel electrode of embodiment has suppressed the temperature rising on periphery and central part.

The lead of embodiment 1 is made of rustless steel, temperature therefore occurs and rise on portion of terminal.Lead is made of copper among the embodiment 3, therefore also can suppress temperature and rise on portion of terminal.Therefore as can be known preferably lead use the low material of resistance.

Claims

1. gel electrode, wherein, on support base material, has conductive layer, on described conductive layer, be provided with zone that possesses electric conductivity gel adhesive layer and the zone that does not possess electric conductivity gel adhesive layer, be provided with lead and girth member thereon on the zone that does not possess described electric conductivity gel adhesive layer, described conductive layer is formed by the porous body layer of the resistance value with 20 Ω/below the 20mm.

2. gel electrode as claimed in claim 1, wherein, described porous body layer is made of fabric, and described fabric constitutes by having metal film coated silk.

3. gel electrode as claimed in claim 2, wherein, described fabric is that aperture opening ratio is 40～80% tulle fabric.

4. as each described gel electrode in the claim 1 to 3, wherein, described lead is made of the metal wire rod with the following resistance value of 4 Ω/cm.

5. as each described gel electrode in the claim 1 to 3, wherein, described lead is made of copper cash.

6. as each described gel electrode in the claim 1 to 3, wherein, described girth member is situated between by described conductive layer, with described support base material thermal welding.

7. as each described gel electrode in the claim 1 to 3, wherein, support base material with described conductive layer has: having possessed its vertical view is the zone that is selected from square, circle and oval-shaped described electric conductivity gel adhesive layer, and does not possess described electric conductivity gel adhesive layer and described lead position projection thereon from what the part in this zone was extended.

8. as each described gel electrode in the claim 1 to 3, wherein, described lead and the overlapping 5～20mm of described conductive layer.

9. as each described gel electrode in the claim 1 to 3, wherein, the conductive layer area that does not possess described electric conductivity gel adhesive layer accounts for 2.5～25% area of whole of described gel electrode.