JP2000176024A - Electrode structural body - Google Patents

Electrode structural body

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Publication number
JP2000176024A
JP2000176024A JP10357957A JP35795798A JP2000176024A JP 2000176024 A JP2000176024 A JP 2000176024A JP 10357957 A JP10357957 A JP 10357957A JP 35795798 A JP35795798 A JP 35795798A JP 2000176024 A JP2000176024 A JP 2000176024A
Authority
JP
Japan
Prior art keywords
electrode
layer
resistance
silver
insulating base
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.)
Pending
Application number
JP10357957A
Other languages
Japanese (ja)
Inventor
Matsuro Kanehara
Koji Maruyama
幸治 丸山
松郎 金原
Original Assignee
Nitto Denko Corp
日東電工株式会社
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 Nitto Denko Corp, 日東電工株式会社 filed Critical Nitto Denko Corp
Priority to JP10357957A priority Critical patent/JP2000176024A/en
Priority claimed from EP99113028A external-priority patent/EP0970719A3/en
Publication of JP2000176024A publication Critical patent/JP2000176024A/en
Pending legal-status Critical Current

Links

Abstract

PROBLEM TO BE SOLVED: To suppress the current-carrying stimulation by arranging a plurality of electrode elements on one side of an insulating base with being mutually insulated by a partition, arranging resistance elements on the other surface of the insulating base, and electrically connecting the respective electrode elements to the respectively corresponding resisting elements through the insulating base. SOLUTION: In the production of a living body electrode structural body, for example, 16 electrode elements 2 are arranged on one side of an insulating base material 1 with being mutually insulated by a partition 7. Each electrode element 2 is formed by successively laminating an electrode 3 and an electrolytic layer 4. Resistance elements 8 are arranged in positions corresponding to the electrode elements 2 on the other side of the insulating base 1, respectively. Each resistance element 8 is arranged in the position corresponding to each electrode element 2, and the mutually corresponding electrode element 2 and resistance element 8 are electrically connected to each other through the insulating base 1. These resistance elements 8 are mutually connected through a wiring 10 consisting of a low-resistance silver paste screen-printed on the insulating base 1 and collected to an electrode terminal 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an electrode structure, and more particularly, to an electrode structure used for iontophoresis.

[0002]

2. Description of the Related Art A biological electrode structure used for iontophoresis generally has a structure in which an electrode and an electrolyte layer (which may contain a drug) are sequentially laminated on a polymer base material. Generally, one single-plate electrode is used as the electrode.

However, in the case of such an electrode structure for a living body, there is a problem that, when energized in a state of being attached to a living body, a portion having a high current density is locally formed, causing burns and damage to skin tissue. Was. Further, when there is a wound on the skin, since the resistance value at that portion is low, the current tends to concentrate and there is also a problem that the risk of burns is high.

To solve such a problem, Japanese Patent Publication No. 2-35584 discloses a device for holding ions to be implanted on a surface of skin or tissue in a bioelectrode for ion mobility limited ionization therapy. Japanese Patent Publication No. 4-74030 discloses an electrode device used for iontophoresis, in which ions are formed so as not to move in a direction parallel to the whole. Have been proposed, respectively. However, in these devices, since a single electrode is used, there has been a problem that the current density cannot be sufficiently uniformized.

Further, Japanese Patent Publication No. 7-507951 proposes a drug delivery device using iontophoresis and a circuit thereof, in which a constant current circuit is provided for each of a plurality of divided electrodes. However, in this device, it is necessary to provide a constant current circuit for each of the divided electrodes, and thus there is a problem in terms of cost, and there is a problem that the method of energization is limited.

In a single-layer electrode in which a predetermined amount of silver is applied to a polymer base material, the Ag → AgCl change partly progresses in the middle of energization, and the state of disconnection occurs before the designed energization time is reached. There was a problem that would be.

[0007]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to make it easy to make the current density uniform regardless of the type of energization and to reduce energization stimulation. Another object of the present invention is to provide an electrode structure capable of maintaining stable current supply for a long time.

[0008]

Means for Solving the Problems The present inventors have set forth the above section.
As a result of intensive studies to solve the problem, the following invention was completed.
Was. That is, the present invention is as follows. (1) An electrode element in which an electrode and an electrolyte layer are sequentially laminated
However, with the electrode as the lower layer side, one surface of the insulating base material
Are arranged insulated from each other by partition walls,
On the other side of the base material, position each corresponding to each electrode element.
Resistance element having a resistance of 1/5 to 5 times the skin resistance
Are arranged, each corresponding electrode element and resistance element
Are electrically connected through the insulating base material
An electrode structure characterized by the above-mentioned. (2) The electrode surface has a circular or polygonal outer peripheral shape.
And the area is lcm TwoLess than (1)
Electrode structure. (3) An electrode is formed on the carbon layer and the carbon layer.
The electrode structure according to the above (1), comprising a silver-containing layer. (4) An electrode is formed on the carbon layer and the carbon layer.
The electrode structure according to (1) above, comprising a layer containing silver and silver chloride.
body. (5) The carbon layer contains carbon fine particles and binder resin.
The electrode according to the above (3) or (4), comprising the composition containing
Structure. (6) The resistance element is made of carbon fine particles and a binder resin.
The electrode structure according to the above (1), comprising a composition containing the electrode structure. (7) The above (1), wherein the partition wall is made of a flexible insulating material.
Electrode structure. (8) Make sure that the partition walls can be in close contact with the side surfaces of each electrode element.
Having a thickness of 0.1 mm or more and a height of 1 to 5 mm
The electrode structure according to the above (1) or (7), which is a molded product. (9) On the other surface of the insulating base, the electrode terminal and the electrode
Wiring patterns for connecting terminals and each resistance element are provided.
The electrode structure according to the above (1).

[0009]

In the electrode structure of the present invention, a plurality of electrode elements are arranged on one surface of the insulating base material while being insulated from each other.
On the other surface of the insulating base material, resistance elements each having a resistance of 1/5 to 5 times the skin resistance are arranged at positions corresponding to the respective electrode elements, and the mutually corresponding electrodes and resistance elements are arranged. Since the electrical connection is made through the insulating base material, the current density can be easily made uniform regardless of the type of energization, and the energization stimulus can be reduced. Further, since the electrode elements are insulated from each other by the partition walls, not only between the electrodes but also between the electrolyte layers are not conducted, so that the diffusion of the current in the lateral direction is reliably prevented. Furthermore, by providing a carbon layer as a lower layer of the electrode, even if the silver-containing layer or the silver / silver chloride-containing layer changes due to the current, the electrochemically stable carbon layer is provided on the underlayer, and the current is stable for a long time. Can be performed.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail.
FIG. 1 is a diagram showing an example of an electrode structure according to the present invention,
FIG. 1A is a plan view of a front side showing an example of an electrode pattern, FIG. 1B is a cross-sectional view taken along line XX ′ in FIG.
FIG. 1C is a plan view of the back surface side showing an example of the resistance element and its wiring.

In the electrode structure shown in FIG. 1, 16 electrode elements 2 are arranged on one surface of an insulating substrate 1 so as to be insulated from each other by partition walls 7. The electrolyte layers 4 are sequentially laminated. Then, on the other surface of the insulating substrate 1, the resistance elements 8 are arranged at positions corresponding to the respective electrode elements 2.

Materials used for the insulating substrate 1 include:
There is no particular limitation as long as the material has an insulating property. Specifically, polyimide, polyethylene terephthalate, polypropylene, polyamide and the like are exemplified, and polyimide and polyethylene terephthalate are preferably used from the viewpoint of heat resistance, moisture resistance and dimensional stability. These materials are
Usually, it is formed into a film or the like and used as the insulating substrate 1.

The electrode element 2 is formed by sequentially laminating an electrode 3 and an electrolyte layer 4, and is arranged on one surface of the insulating substrate 1 with the electrode 3 as a lower layer side. The number of electrode elements 2 to be arranged is preferably 10 or more. The larger the number, the more uniform the current density.

The size and shape of the upper surface of the electrode element 2 (the side that comes into contact with the skin) are not particularly limited, and can be appropriately selected according to the target living body, purpose, and the like. Is usually 2 to 400 cm 2 , preferably 4 to
200 cm 2 .

The electrode 3 preferably has, as a lower layer, a layer 5 made of a material which does not change electrochemically. As such a material, carbon is preferable.
As a result, the electrode 3 becomes electrochemically stable, and stable energization can be performed for a long time. The carbon layer 5 is preferably a coating film composed of a composition containing carbon fine particles and a binder resin. Examples of the binder resin used here include a phenol resin, a polyester resin, an epoxy resin, and an acrylic resin.
As such a paint, for example, Dooite FC-415 manufactured by Fujikura Kasei Co., Ltd. is commercially available, and the carbon layer 5 is formed by screen-printing the paint, for example.

In the electrode 3, an upper layer 6 containing a metal material having good conductivity such as silver is formed on the carbon layer 5. As such an upper layer 6, a silver plating layer, a silver / silver chloride layer formed by electrolyzing a silver plating layer in a saline solution, a coating layer containing a paint containing silver fine powder and a binder resin, silver fine powder, chloride A coating layer composed of a paint containing silver fine powder and a binder resin is exemplified. Here, examples of the binder resin include a phenol resin, a polyester resin, an epoxy resin, and an acrylic resin.

When the electrode structure of the present invention is used for a positive electrode, the upper layer 6 is a silver-containing layer 6a, which may be a silver plating layer or a coating layer composed of silver powder and a binder resin. When used for the negative electrode,
The upper layer 6 is a silver / silver chloride-containing layer 6b, which is, for example, a coating layer composed of silver powder, silver chloride powder and a binder resin, or a silver / silver chloride layer obtained by electrolyzing a silver plating layer in a saline solution. Is done.

For example, Dortite FA-353 manufactured by Fujikura Kasei Co., Ltd. is commercially available as silver paint, and Dortite XA-450 manufactured by Fujikura Kasei Co., Ltd. is commercially available as silver / silver chloride paint. The silver-containing layer 6a or the silver / silver chloride-containing layer 6b is formed by, for example, screen printing these paints. This silver containing layer 6a or silver / silver chloride containing layer 6b
May be used as it is, but if the surface is to be made 100% silver, silver plating may be further performed.

Silver-containing layer 6a and silver / silver chloride-containing layer 6b
There is no particular limitation on the thickness, but it is necessary to have an adhesion amount that is equal to or greater than the change amount of Ag → AgCl or AgCl → Ag calculated from the amount of electric charge for iontophoresis.

Although the shape of the surface of each electrode 3 is not particularly limited, it is preferably circular or polygonal, and its area is preferably less than 1 cm 2 from the viewpoint of preventing current concentration. Since the electrode 3 is small, it is preferable that the electrode 3 be a square having a side of 1 to 10 mm from the viewpoint of workability and handleability. If one side is smaller than 1 mm, processing becomes difficult, and if one side is larger than 10 mm, it is difficult to make the current density of the skin uniform, which is not preferable. The thickness of the electrode 3 is generally about 0.005 to 0.1 mm, preferably 0.01 to 0.1 mm.
It is about 0.03 mm.

The electrolyte layer 4 laminated on the electrode 3 is a layer in which an electrolyte solution is held by a material capable of holding the solution. As the electrolyte solution, an aqueous solution of a drug that dissociates ions or physiological saline is used. The material that can hold the electrolyte solution is not particularly limited as long as it can be held, for example,
Absorbent cotton, sponge, gel material and the like can be mentioned. Among them, gel material is preferable because it can hold the electrolyte solution well.

Examples of the gel material include natural polysaccharides such as starch, karaya gum, tragacanth gum and xanthan gum; vinyl resins such as partially saponified polyvinyl alcohol, polyvinyl formal, polyvinyl methyl ether and copolymers thereof, polyvinyl pyrrolidone and polyvinyl methacrylate. Various natural polysaccharides or synthetic resins having hydrophilicity such as acrylic resins such as polyacrylate partially saponified products and poly (acrylic acid-acrylamide) are treated with water and / or alcohol such as polyethylene glycol and glycerin. One that is soft plasticized to form a flexible sheet-like gel having self-retaining property and skin contact property.

The thickness of the electrolyte layer 4 is usually 0.2 to 10 m
m, preferably about 1 to 5 mm.

When the electrode structure of the present invention is used for iontophoresis, the aqueous drug solution is applied to the electrolyte layer 4 of either the positive electrode or negative electrode electrode structure according to the ionic form of the drug used in the aqueous solution. To be contained.
For example, when the drug is present in the form of a cation in the aqueous solution, the drug is used as an electrolyte solution contained in the electrolyte layer 4a of the electrode structure for the positive electrode, and when the drug is present in the form of an anion in the aqueous solution, Electrolyte layer 4b of electrode structure for negative electrode
It is used as an electrolyte solution contained in. In each case, physiological saline is used as the electrolyte solution contained in the electrolyte layer 4 of the other electrode structure.

In the electrode structure of the present invention, since the electrode elements 2 are arranged so as to be insulated from each other by the partition walls 7, when the electrode body is applied to the skin, the adjacent electrolyte layers 4 may come into contact with each other. In addition, the current does not flow between the electrolyte layers 4 and does not diffuse in the lateral direction, so that the current density can be made uniform.

The partition 7 is not particularly limited as long as it is made of a composition containing an insulating material. However, in consideration of sticking the electrode structure of the present invention to the skin, a flexible insulating material is used. It is preferable to consist of a composition containing

Examples of the flexible insulating material include a soft silicone resin, a styrene-based thermoplastic elastomer, an olefin-based thermoplastic elastomer, and a propylene-based copolymer soft resin. Styrenic thermoplastic elastomers are preferred. As a styrene-based thermoplastic elastomer, for example, Lavalon SJ-4400 manufactured by Mitsubishi Chemical Corporation is commercially available.
Further, the same material as the insulating base material 1 may be used.

The method of providing the partition walls 7 and the shape thereof are not particularly limited. However, it is preferable that the partition walls 7 have a shape that can be in close contact with the side surface shape of each electrode element 2. For example, as shown in FIG. In the case where the outer peripheral shape is a quadrangular shape and arranged in a line in the vertical and horizontal directions, it is preferable that the partition wall 7 is a cross-shaped molded product that is in close contact with the side surface shape of each electrode element 2. The above-mentioned partition wall 7 formed in a desired shape is disposed on the insulating base material 1 between the electrode elements 2 via an adhesive.

The partition 7 may have a shape integrated with the insulating substrate 1. In this case, for example, a method of shaving the insulating substrate 1 having a large thickness by the thickness of the electrode 3 and the electrolyte layer 4 or a molded product in which the insulating substrate 1 and the partition wall 7 are integrated using a mold May be used.

The height of the partition 7 may be such that the electrolyte layer 4 is not exposed to the outside than the partition so as to prevent the current from spreading in the lateral direction, but is preferably about 1 to 5 mm. The thickness of the partition is preferably 0.1 mm or more.

On the back surface of the insulating substrate 1, a resistance element 8 is provided as shown in FIG. Each resistance element 8
Are arranged at positions corresponding to the respective electrode elements 2, and the mutually corresponding electrode elements 2 and the resistance elements 8 are electrically connected to each other through the insulating base material 1. As described above, since each of the resistance elements 8 is provided on each of the electrode elements 2, the current density can be easily made uniform regardless of the energization method, and the energization stimulus can be reduced.

A commercially available chip resistor may be used as the resistor element 8. However, in order to reduce the manufacturing cost, a paste containing carbon fine particles and a binder resin is formed into a shape having a predetermined resistance value by, for example, screen printing. It is formed. Here, examples of the binder resin include a phenol resin, a polyester resin, an epoxy resin, and an acrylic resin. As such a paste, for example, Dotite XC-155U manufactured by Fujikura Kasei Co., Ltd. is commercially available.

The resistance value of the resistance element 8 is 1/1 / of the skin resistance value.
It is about 5 to 5 times. The resistance value is 1 of the skin resistance value.
If it is smaller than / 5 times, the current density becomes locally too high and the risk of burns increases. Conversely, if it is larger than 5 times, an excessive voltage is required to obtain the current required for iontophoresis. Become. The human skin resistance value is generally about 5 to 100 kΩ / cm 2 at a frequency of 100 Hz or lower, and decreases as the frequency increases.
Above kHz, it is on the order of several hundred Ω / cm 2 . (Reference: T Yamamoto, Y Yamamoto's "Electrical ptoperties"
of the epidermal stratum corneum "Medical and Bio
logical Engineering March 1976 p. 151)

The resistance element 8 on the back side and the electrode element 2 on the front side
And are electrically connected. The connection is performed, for example, by filling a fine hole 9 provided in the insulating base material 1 with a conductive material for conduction. In this case, for example, by printing a carbon-containing paint on the insulating base material 1 having holes 9 provided in predetermined positions in advance, the carbon layer 5 is formed.
Is formed by simultaneously filling the holes 9 with a conductive material or printing a carbon resistor paste for forming the resistor elements 8 on the back surface of the insulating substrate 1 in which the holes 9 are provided at predetermined positions. A method of filling the hole 9 with a conductive material at the same time as the formation of the element 8 may be employed. In these methods, the resistance element 8 and the electrode element 2 can be easily electrically connected.

As shown in FIG. 1 (c), these resistive elements 8 are wirings 10 on which a low-resistance silver paste, for example, Dotite FA-353 manufactured by Fujikura Kasei Co., Ltd. is screen-printed.
Are connected to each other to collect the electrode terminals 11.

FIG. 2 is a schematic view showing an example of a mode of use of the electrode structure of the present invention. As shown in FIG. 2, the electrode structure of the present invention is used by bringing the electrolyte layer 4 side into contact with the skin 12 or the like and energizing. Energization is performed by the power supply 13. The method of energization is not particularly limited, and may be any of a method using a DC constant current, a pulse, a high frequency and the like.

The plurality of electrode elements 2 are arranged on the insulating substrate 1 so as to be insulated from each other. The other surface of the insulating substrate 1 is electrically connected to the electrode elements 2 at positions corresponding to the respective electrode elements 2. Are connected, and the resistance elements 8 each having a resistance of 1/5 to 5 times the skin resistance are arranged. Therefore, regardless of the method of energization, variations in current density can be easily suppressed to achieve uniformity. Can be reduced, and the electric stimulation can be reduced. Also, since the electrode elements 2 are insulated from each other by the partition walls 7, the electrode 3
Not only between the electrolyte layers 4 but also between the electrolyte layers 4 is not conducted, so that the diffusion of the current in the lateral direction is reliably prevented. Further, by providing the carbon layer 5 as a lower layer of the electrode, even if the silver-containing layer 6a and the silver / silver chloride-containing layer 6b change due to energization, the carbon layer 5 which is electrochemically stable is provided as an underlayer. Time stable power supply can be performed.

[0038]

EXAMPLES The present invention will be specifically described below based on examples, but the present invention is not limited to these examples.

Example 1 Two electrode structures for a positive electrode and a negative electrode having 16 electrode elements 2 as shown in FIG. 1 were prepared as follows. On a 50 μm thick polyester film substrate,
A hole 9 having a diameter of 3 mm is formed in advance at a position where the carbon layer 5 is to be formed, and a carbon conductive paint (FC-FC-
Using 415), screen printing was performed with a thickness of 10 μm to form 16 carbon layers 5 each having a size of 3.5 mm □ and a distance of 1.5 mm.

Next, a carbon resistor paste (XC-155U, manufactured by Fujikura Kasei Co., Ltd.) is screen-printed on the back surface, and about 50 kΩ (12 in this example) is formed at a position corresponding to the position where the carbon layer 5 is formed. The resistance element 8 having a resistance value of 0.5 kΩ / cm 2 was designed, and the paste was buried in the holes 9 to electrically connect the carbon layer 5 and the resistance element 8. Next, the wiring 10 connecting these resistance elements 8 is made of silver paste (F.
A-353) was formed by screen printing.

Next, a silver paste (FA-353, manufactured by Fujikura Kasei Co., Ltd.) having a thickness of 30 μm and a silver / silver chloride-containing layer 6 for the negative electrode were formed on the carbon layer 5 as a silver-containing layer 6a for the positive electrode.
silver / silver chloride paste (XA-4 manufactured by Fujikura Kasei Co., Ltd.)
50) were provided by screen printing to form the electrodes 3.

A girder-shaped partition (partition wall width 1 mm, height 2 mm, pitch 5 mm) having a shape closely adhering to the side surface shape of the electrode 3 is made of a styrene-based thermoplastic elastomer (Lavalon SJ- manufactured by Mitsubishi Chemical Corporation). 4400). The partition 7 was fitted between the electrodes 3 on the insulating substrate 1 described above, and adhered to the insulating substrate 1 using an epoxy resin.

10% by weight as the positive electrode electrolyte layer 4a
As a negative electrode electrolyte layer 4b, a gel prepared by including 90% by weight of an aqueous solution of lidocaine hydrochloride in an oblate (a drug oblate manufactured by Niigata Oblate Co., Ltd.) was used.
Using a gel in which 90% by weight of 9% by weight saline was added to an oblate (a drug oblate manufactured by Niigata Oblate Co., Ltd.), an electrolyte layer 4a was formed on the silver-containing layer 6a and an electrolyte layer 4a was formed on the silver / silver chloride-containing layer 6b. 4b was formed.

As shown in FIG. 2, the obtained electrode structures for the positive electrode side and the negative electrode side were placed on the left forearm of an adult male (skin resistance: about 15 kΩ / cm 2 ) at intervals of about 20 mm. Each was affixed and energized at a constant DC current of 2 mA for 10 minutes.

Comparative Example 1 An electrode structure having a structure as shown in FIG. 3 was prepared as follows. The single plate electrode 21 is a silver foil electrode (20 mm square, thickness 30).
μm), and the silver chloride layer 2 on the single-plate electrode 21 on the negative electrode side.
2 was formed with a thickness of about 5 μm. Electrolyte layer 23 for positive electrode side
a is that a 10% by weight aqueous solution of lidocaine hydrochloride is contained in absorbent cotton having a thickness of about 2 mm to form an electrolyte layer 23 for the negative electrode side.
b was formed by including 0.9% by weight physiological saline in absorbent cotton having a thickness of about 2 mm. As shown in FIG. 3, the obtained electrode structures for the positive electrode side and the negative electrode side are attached to the left forearm of an adult male (skin resistance: about 15 kΩ / cm 2 ) at intervals of about 20 mm. And a constant current of 2 mA for 10 minutes.

As a result of the energization, in Example 1 and Comparative Example 1, the local anesthetic effect of lidocaine was sufficiently recognized on the positive electrode side, but in Example, water bubbles and the like due to current concentration were not recognized. In the comparative example, a water bubble having a size of about 2 mmφ was locally observed on both the positive electrode side and the negative electrode side due to current concentration.

Example 2 As shown in FIG. 2, the electrode structures for the positive electrode and the negative electrode obtained in Example 1 were spaced apart from each other by about 20 mm to the left forearm of an adult male (skin resistance: about 15 kΩ). / Cm 2 ), and was supplied with a DC constant current of 1.6 mA for 5 minutes. As the DC constant current source, a self-made simple constant current source circuit utilizing the constant current characteristics of a transistor was used. The current density was determined from the voltage applied to the resistance element 8 of each divided electrode at this time. The current was converted into a current from the measurement data 5 minutes after the energization.

Comparative Example 2 In Example 1, the resistance value of the resistance element was changed to about 10 kΩ (2.5 kΩ / cm
Except for 3 ), the electrode structures for the positive electrode and the negative electrode were prepared in the same manner as in Example 1, and the currents were obtained by applying a current in the same manner as in Example 2.

Table 1 shows the maximum value, the minimum value, and the average value of the current density per each divided electrode in Example 2 and Comparative Example 2.

[0050]

[Table 1]

As shown in Table 1, it can be seen that in Example 2, the variation of the current density was suppressed to within an average value ± 10%. However, in Comparative Example 2, the current density was not uniform because the resistance value was low.

[0052]

As is apparent from the above description, in the electrode structure of the present invention, a plurality of electrode elements are arranged on one surface of an insulating substrate while being insulated from each other. A resistance element having a resistance of 1/5 to 5 times the skin resistance is arranged at a position corresponding to each electrode element on the surface, and the mutually corresponding electrode element and resistance element penetrate the base material and electrically connect to each other. Since the connection structure is adopted, it is possible to easily suppress the variation of the current density and to make the current density uniform, irrespective of the energization method, and to reduce the energization stimulation. Further, since the electrode elements 2 are insulated from each other by the partition walls 7, not only between the electrodes 3 but also between the electrolyte layers 4 are not conducted, so that the current diffusion in the lateral direction is reliably prevented. Furthermore, by providing a carbon layer as a lower layer of the electrode, even if the silver-containing layer or the silver / silver chloride-containing layer changes due to the current, the electrochemically stable carbon layer is provided on the underlayer, and the current is stable for a long time. Can be performed.

[Brief description of the drawings]

FIG. 1 is a schematic view showing an example of an electrode pattern of an electrode structure according to the present invention.

FIG. 2 is a schematic view showing an example of a usage mode of the electrode structure of the present invention.

FIG. 3 is a schematic view illustrating an example of a usage mode of an electrode structure according to a comparative example.

[Description of Signs] 1 Insulating base material 2 Electrode element 3 Electrode 4 Electrolyte layer 4a Positive electrolyte layer 4b Negative electrolyte layer 5 Lower layer (carbon layer) 6 Upper layer (silver-containing layer or silver / silver chloride-containing layer) 6a Silver Containing layer 6b Silver / silver chloride containing layer 7 Partition wall 8 Resistance element 9 Hole 10 Wiring 11 Electrode terminal 12 Skin 13 Power supply 21 Single-plate electrode 22 Silver chloride layer 23a Electrolyte layer 23b Electrolyte layer 24 Power supply 25 Skin

Claims (9)

    [Claims]
  1. A plurality of electrode elements each having an electrode and an electrolyte layer sequentially laminated on one surface of an insulative base material with the electrodes serving as a lower layer side and insulated from each other by partition walls; A resistance element having a resistance of 1/5 to 5 times the skin resistance is disposed at a position corresponding to each electrode element on the other surface of the element, respectively. An electrode structure characterized by being electrically connected through a base material.
  2. 2. The electrode structure according to claim 1, wherein the surface of the electrode has a circular or polygonal outer peripheral shape, and its area is less than 1 cm 2 .
  3. 3. The electrode structure according to claim 1, wherein the electrode comprises a carbon layer and a silver-containing layer formed on the carbon layer.
  4. 4. The electrode structure according to claim 1, wherein the electrode comprises a carbon layer and a silver / silver chloride-containing layer formed on the carbon layer.
  5. 5. The electrode structure according to claim 3, wherein the carbon layer is composed of a composition containing carbon fine particles and a binder resin.
  6. 6. The electrode structure according to claim 1, wherein the resistance element is made of a composition containing carbon fine particles and a binder resin.
  7. 7. The electrode structure according to claim 1, wherein the partition is made of a flexible insulating material.
  8. 8. The partition wall has a shape capable of closely adhering to the side surface shape of each electrode element, and has a thickness of 0.1 mm or more and a height of 1 mm.
    The electrode structure according to claim 1 or 7, wherein the electrode structure is a molded product having a size of 5 to 5 mm.
  9. 9. The electrode according to claim 1, wherein an electrode terminal and a wiring pattern for connecting the electrode terminal and each resistance element are provided on the other surface of the insulating base material. Structure.
JP10357957A 1998-12-16 1998-12-16 Electrode structural body Pending JP2000176024A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10357957A JP2000176024A (en) 1998-12-16 1998-12-16 Electrode structural body

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP10357957A JP2000176024A (en) 1998-12-16 1998-12-16 Electrode structural body
EP99113028A EP0970719A3 (en) 1998-07-08 1999-07-06 Electrode structure
US09/348,756 US6336049B1 (en) 1998-07-08 1999-07-07 Electrode structure for reducing irritation to the skin

Publications (1)

Publication Number Publication Date
JP2000176024A true JP2000176024A (en) 2000-06-27

Family

ID=18456820

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10357957A Pending JP2000176024A (en) 1998-12-16 1998-12-16 Electrode structural body

Country Status (1)

Country Link
JP (1) JP2000176024A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008167995A (en) * 2007-01-12 2008-07-24 Tti Ellebeau Inc Printing electrode member and iontophoresis device
JP2009131439A (en) * 2007-11-30 2009-06-18 Teikoku Seiyaku Co Ltd Electrode structure
JP2013248355A (en) * 2012-06-04 2013-12-12 Dainippon Printing Co Ltd Biomedical electrode and iontophoretic apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008167995A (en) * 2007-01-12 2008-07-24 Tti Ellebeau Inc Printing electrode member and iontophoresis device
JP2009131439A (en) * 2007-11-30 2009-06-18 Teikoku Seiyaku Co Ltd Electrode structure
JP2013248355A (en) * 2012-06-04 2013-12-12 Dainippon Printing Co Ltd Biomedical electrode and iontophoretic apparatus

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