JPH0570552U - Biomedical electrodes - Google Patents

Abstract

(57) [Summary] [Structure] A plurality of electrodes, which are electrically independent from each other, are each composed of a conductive adhesive, an electron conductive layer, a non-conductive sheet material supporting the conductive adhesive, and a connecting means to the outside. , Are integrated through the sheet-like material. [Effect] Since each electrode has a connecting means to the outside, it does not depend on the area of the instrument. Also, because they are integrated, they have good closeness to skin and conformability.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a biomedical electrode provided with a skin-adaptable conductive adhesive and a connector such as a snap.

[0002]

[Prior Art]

 Conventionally as an electrode for biomedical applications, an electrode plate, a means for electrically connecting the electrode plate and the cord, and a conductive cream or skin-conducting conductive material for improving the conductivity between the skin and the electrode plate. Those made up of adhesives have been used. A silver-silver chloride electrode is conventionally known as a particularly preferable electrode plate, but a metal such as aluminum can also be used. As the conductive adhesive, various hydrogels in which the electrolyte is dissolved are used. It is preferable to use a metallic snap as a means for electrically connecting the electrode plate and the cord, since they can be easily attached and detached.

[0003]

[Problems to be solved by the device]

 Usually, electrodes of this type are used in one or more sets, but it has been customary to attach a plurality of electrodes separately to the instrument via a cord. In recent years, devices such as low-frequency therapy devices have become extremely small, and there is a type in which a pad made of a conductive adhesive is attached to the electrodes on the surface of the device, making it easier to carry and use. However, these types of devices have difficulty in closely contacting with the curved surface of the skin because the device is rigid, and in order to improve the adhesion, it is necessary to reduce the size of the device and make a flat contact with the skin. .. However, in the conventional method, if the device is made smaller, the pad is inevitably made smaller, and if the pad is made smaller, there is a contradictory problem of causing a problem in conductivity.

The present invention aims to solve such problems.

[0005]

Means for Solving the Problems The present invention aims at the present invention, namely, a conductive adhesive 1, an electron conductive layer 2, a non-conductive sheet material 3 supporting an electron conductive layer, and A biomedical device characterized in that a plurality of electrodes electrically connected to each other and electrically independent of each other are integrated through a common non-conductive sheet-like material 3. It is achieved by electrodes.

[0006]

[Action]

 In the present invention, any conductive adhesive 1 may be used as long as it has sufficient conductivity and an adhesive force suitable for the skin, but a hydrous gel in which an electrolyte such as salt is dissolved is used. Is good. Further, the conductive adhesive 1 may be a sheet-like one prepared in another place in advance and attached to the electrode described below, or a precursor of the conductive adhesive may be placed on the electrode laminated body described below and adhered by a reaction. You may take the method of changing to a substance.

The electronically conductive layer 2 is formed by laminating a metal foil on a non-conductive support, depositing a conductive metal on the support, or coating a conductive ink on the support. Can also be formed by. The metal foil to be laminated includes silver, tin, aluminum and the like, and the same metal is used for vapor deposition. As conductive ink, it is known that conductive carbon fine particles are mixed with silver fine particles in some cases and mixed with a binder and a medium, and it is possible to use a method such as screen printing on the non-conductive film described above. A laminated body can be formed by a method such as coating and drying.

As the non-conductive sheet-like material 3 supporting the electron conductive layer, there are films of polyethylene terephthalate (PET), polyvinyl chloride (PVC), polyethylene, polypropylene, etc., and any of them can be used. However, PET is preferable in terms of sheet strength, ease of conductive ink printing process, and the like.

As the connection means 4 to the outside, a metal such as copper or brass, or a metal obtained by plating nickel or silver on the metal is preferably used. The shape of the connector is appropriately selected according to need, but a snap is a preferable form because it can be easily attached and detached. The snaps are mounted with their heads facing the non-conductive side of the sheet and the brims facing the conductive adhesive side. At this time, the mounting may be performed by caulking, but since there is a problem of deformation of the sheet, a method of simply inserting and pressing with a film to adhere may be used. A film or the like may be interposed between the connector and the conductive adhesive in order to prevent corrosion of the metallic connector due to direct contact between the connector and the conductive adhesive. In this case, in order to ensure the separation, it is desirable that the adhesive layer be attached to the conductive layer.

A feature of the present invention is that a plurality of electrodes having the above-described structure are electrically independent and integrated as a form. Since the electrodes of the present invention each have a connecting means to the outside, they can be used as necessary and sufficient electrodes without being affected by the area of the instrument. In addition, since it is integrated, it has a large adhesion area to the skin, and if a flexible film or the like is used as a non-conductive sheet-like material, it easily follows the skin even if the adhesion area is increased, and adheres well. In particular, it is preferable to use a connection tool that can be firmly fixed, such as a snap, because it is possible to stably mount a small low-frequency treatment device or the like. The shape of each electrode may be a circle (FIG. 1), an ellipse, a polygon, or any other shape.

[0011]

【Example】

 Hereinafter, the present invention will be described more specifically with reference to examples. Example 1 A screen of 100 mesh was used on one surface of a PET film having a thickness of 75 μm, and conductive ink JEF-114 manufactured by Nippon Acheson Co., Ltd. was screen-printed and dried to form PET3 having a shape as shown in FIG. A laminate with Layer 2 was obtained. The thickness of the layer of conductive paint was about micron, and the surface specific resistance was 120Ω / □.

A hole having a diameter of 4 mm was made at the position a of this laminate, and a snap (MINT-7 lower mold made by Gondola Kogyo Co., Ltd. (SIZE 7 mm, nickel)) in which brass was nickel-plated was used as the head of the film laminate. It was inserted so that it faces the non-conductive side, and it was fixed by sticking it from the conductive side with Sekisui Chemical's vinyl tape (black) 5. The thickness was reinforced with a polyester net on the inside that was made separately. A 2 mm conductive hydrogel was applied, and a release film made of PET subjected to mold release treatment was applied on the gel, and this laminate was cut as shown in Fig. 1 to form a biomedical electrode. Was peeled off and attached to a stainless steel plate, and an alternating current voltage of 1 kHz and 1 V pp was applied between the two snaps, and the impedance was measured to be 155 Ω. After being left in an atmosphere of% RH for 300 hours, no change in appearance such as isolation was observed.

[0013]

[Effect of the device]

 The electrodes of the present invention are not left to the area of the instrument because each electrode has a connecting means to the outside. In addition, since they are integrated, the area of close contact with the skin is large and the ability to follow the skin is good.

[Brief description of drawings]

FIG. 1 is a plan view (A) and a sectional view (B) of an example of an electrode of the present invention.

FIG. 2 is a plan view (A) and a sectional view (B) of a laminate in the process of manufacturing the electrode of the present invention.

[Explanation of symbols]

 1 Conductive Adhesive 2 Electron Conductive Layer 3 Non-conductive Sheet Material 4 External Connection Means

Claims (2)

[Scope of utility model registration request] 1. A conductive adhesive, an electronic conductive layer,
A plurality of electrodes which are electrically non-conductive sheet-like materials supporting the electron-conductive layer and connecting means to the outside, and which are electrically independent of each other form a common non-conductive sheet-like material. An electrode for biomedical use, characterized in that it is integrated via 2. The biomedical electrode according to claim 1, wherein the connecting means to the outside is a snap.