JPH033285Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> This invention relates to an improvement of a conductive tongue piece provided on an electrode piece of a biological electrode for extracting electrical signals generated from a living body.

<Conventional technology and its problems> Conventionally, it has been attached to the surface of the subject's body as a biological electrode for measuring the action current and action potential of the heart.
Various fixable structures have been developed, and a one-touch type with a substantially circular shape has been developed for ease of installation. This electrode has a conductive adhesive layer on one side of a conductive electrode piece made of metal foil, and a conductive tongue piece for connection with a biomedical diagnostic device is integrally protruded from the end of the electrode piece. It was established by

However, since the biological electrode has a shape in which the tongue portion protrudes outside the conductive electrode piece, when a lead wire terminal for connection is connected to the tongue portion, stress acts on the tongue portion. acts on the proximal end of the conductive adhesive layer, causing the electrode to be lifted by the terminal, and wall-opening stress acts between the skin surface and the conductive adhesive layer after connection. This may cause the layer to lift up and peel off from the tongue portion side, or cause instability of electrical signals due to poor adhesion, and this phenomenon is particularly noticeable when used for long periods of time, such as for monitoring purposes. It was hot.

Therefore, the present applicant previously devised a biological electrode having a structure as shown in FIG. 2 as a biological electrode that does not peel off from the skin surface even when used for a long time and can be easily attached.

That is, a substantially non-adhesive thin layer 4 having a smaller area than the conductive adhesive layer 2 is formed on the conductive adhesive layer 2, and a flexible electrode piece 1 that follows the skin surface is laminated thereon. This electrode piece 1 has a structure in which a cut 6 is made in the center of the non-adhesive thin layer and a conductive tongue piece 3 is provided.

However, in a biological electrode having such a structure, when the conductive tongue piece 5 on the upper part of the electrode is pulled upward with a fingernail, the edge of the conductive tongue piece 5 is pulled up, but the operability is poor. There was a drawback.

<Means for solving the problem> As a solution to these drawbacks, (1) attach a highly repulsive member to the conductive tongue portion;

(2) Apply (print) adhesive on the top of the conductive tongue.

(3) The end of the conductive tongue protrudes from the electrode piece to facilitate pulling up the conductive tongue with a fingernail.

This idea is based on (2) above.

That is, this invention consists of a flexible electrode piece that follows the skin surface, a thin layer with a small area that is substantially non-adhesive, and a flexible conductive adhesive layer that transmits electrical signals from the living body to the electrode piece. A biomedical electrode formed by stacking layers in the same order, forming a conductive tongue by providing a cut in the center of the thin layer contact area of the electrode, and further forming an adhesive layer on the inside surface of the conductive tongue. be.

<Example> This idea will be explained below with reference to FIG. 1 showing one example.

In FIG. 1, reference numeral 2 denotes a conductive adhesive layer, and a conductive piece 1 is placed on the entire upper surface of the conductive adhesive layer 2 through a small area substantially non-adhesive thin layer 4 in the center of the conductive adhesive layer 2. are layered. And this electrode piece 1
A conductive tongue piece 3 is formed by providing a cut 6 in the center with a non-adhesive thin layer on the lower surface of the conductive tongue piece 3.
It has a structure in which an adhesive layer 5 is provided on the inner surface.

<Effect of the invention> With this structure, when using this biological electrode, the conductive tongue piece can be easily pulled upward by simply touching the adhesive layer with a finger. . At the same time, when the conductive tongue is clamped with clips, the adhesive layer also serves as a non-slip agent, which is preferable.

In this invention, it is preferable to use an Al-deposited film as the electrode piece.

Furthermore, in this invention, the electrode piece may be constructed by laminating a conductive layer and an electrically insulating layer, and a conductive material may be provided on the conductive layer side. It can be applied and installed to prevent noise caused by contact, etc. when extracting electrical signals.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the structure of the biomedical electrode of this invention, and FIG. 2 is a perspective view showing the structure of a conventional biomedical electrode. DESCRIPTION OF SYMBOLS 1... Electrode piece, 2... Conductive adhesive layer, 3... Conductive tongue piece, 4... Non-adhesive thin layer, 5... Adhesive layer, 6
...A break.

Claims (1)

[Claims for Utility Model Registration] (1) A flexible electrode piece that follows the skin surface, a thin layer with a small area that is substantially non-adhesive, and a flexible conductive piece that transmits electrical signals from a living body to the electrode piece. An adhesive layer is laminated in this order, a cut is provided at the center of the thin layer contact area of the electrode piece to form a conductive tongue piece, and an adhesive layer is further formed on the inside surface of the conductive tongue piece. A biomedical electrode. (2) The living body electrode according to claim 1, wherein the electrode piece is made of a laminated layer of a conductive layer and an electrically insulating layer, and a conductive material layer is provided on the conductive layer side.