JPH0543766Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The present invention relates to a biological electrode used to derive a weak voltage from a living body, and particularly to a biological electrode that can be easily attached to a living body and manufactured at a low cost. It is.

[Conventional technology]

As is well known, bioelectricity generated in a living body is induced by the activities of the heart, brain, muscles, etc.

In particular, bioelectricity generated in the heart is measured by recording the weak voltage induced on the skin of the living body using an external electrocardiograph.
Diagnosing heart abnormalities. In order to electrically connect the input section to the living body, this electrocardiograph requires a living body electrode to be brought into close contact with the surface of the living body's skin.

The conventional electrode that is brought into close contact with the surface of the skin will be explained with reference to FIGS. 6 and 7. In the figure, reference numeral 1 indicates a biological electrode.

This biological electrode 1 has a substantially disc-shaped adhesive base material 2. This adhesive base material 2 has an adhesive surface 2a as shown in FIG. 7 in order to bring the biological electrode 1 into close contact with the skin surface M of the living body as shown in FIG. At the same time, the central portion thereof is cut out to form an opening 3.

On the upper surface side (surface side) of this adhesive base material 2, a sixth
As shown in the figure, a lead wire connection hook 4 is joined and closes the opening 3. This lead wire connection hook 4 has a lead wire joint portion 4a protruding from the top side, and an Ag-bond part 4a from the bottom side as shown in FIG.
A plate-shaped electrode section 5 made of Agcl is connected. A lead wire connector 7 to which a lead wire 6 is connected as shown in FIG. 8 is connected to the protruding lead wire coupling portion 4a, and the other end of the lead wire 6 is connected to an electrocardiograph (not shown). ).

[The problem that the idea aims to solve]

In order to record an electrocardiogram using the biological electrode 1 configured as described above, first, as shown in FIG. 8, the adhesive base material 2 of the biological electrode 1 is adhered to the skin surface M of the biological body. Next, the fitting groove 7a of the lead wire connection body 7
is fitted into the lead wire coupling portion 4a protruding from the lead wire connection hook 4 of the biomedical electrode 1, thereby connecting the lead wire connecting body 7 to the biomedical electrode 1 and leading it out from the electrode portion 5. The weak voltage generated is recorded on an electrocardiograph (not shown) via the lead wire 6.

Or, connect the lead wire connection hook 4 of the biological electrode 1 in advance.
The electrocardiogram may be recorded by closely contacting the living body electrode 1 with the lead wire connecting body 7 connected to the lead wire connecting part 4a protruding from the skin surface M of the living body.

Although it is possible to measure an electrocardiogram using any of the methods described above, in most cases, such a biological electrode 1 is discarded after one measurement. However, as described above, the electrode portion 5 of the biological electrode 1 uses an expensive metal such as Ag-Agcl. In addition, the assembly process is complicated because the electrode 1 that directly derives a weak voltage from the living body and the lead wire connection body and lead wire (i.e., circuit section) that lead the voltage derived from the electrode 1 to the electrocardiograph are separate parts. The problem was that the production costs were high. In particular, since a large number of biological electrodes 1 are used, the problem of cost cannot be ignored, and the development of a biological electrode 1 that can be manufactured at a lower cost has been awaited.

Furthermore, in the case of a seriously ill patient, the biomedical electrode 1 must also be attached to the back of the patient, so if the patient is lying down, the biomedical electrode 1 may come into contact with his or her back, causing discomfort and not being conventionally used. The biological electrode used in this study also had the disadvantage that it did not fit the living body.

[Means to solve the problem]

Therefore, this idea was created with an eye on the above-mentioned problems, and it consists of a single electrode part formed by printing a liquid conductive substance on a thin synthetic resin adhesive base material, and a single electrode part formed by printing a liquid conductive substance on a thin synthetic resin plate adhesive base material. and a circuit section, the single circuit section is connected to the single electrode section and is coated with an insulating adhesive material so that it can be brought into close contact with the living body. The purpose is to solve the above problems.

[Effect]

In the above configuration, when the electrode part of the biomedical electrode is brought into contact with the skin surface of the living body, and the adhesive of the adhesive base material of the thin synthetic resin plate is brought into contact with the skin surface of the living body, and the biomedical electrode is brought into close contact with the skin surface of the living body, The weak voltage inside the living body is derived from a single electrode section, guided to an electrocardiograph by a single circuit section, and an electrocardiogram is recorded.

〔Example〕

Hereinafter, how the configuration of the present invention is actually implemented will be explained with reference to the drawings, along with its operation.

FIG. 1 is a perspective view of a biological electrode according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view of the biological electrode of FIG. 1, where 10 is the biological electrode.

This biological electrode 10 has an adhesive base material 11 made of a thin synthetic resin plate. The adhesive base material 11 of the synthetic resin thin plate is made of synthetic resin such as polyester, nylon, polybutylene, butadiene, polyurethane, vinyl chloride, or the like. Reference numeral 12 denotes an electrode portion that comes into contact with the skin surface through a cream or the like to derive a weak voltage from the living body.

This electrode part 12 is a single piece, and is made of silver or a mixture of silver and silver chloride, a mixture of silver and conductive graphite, or graphite as a conductive metal powder and mixed with a resin and a solvent to form a paste or ink. A conductive ink, which is a conductive substance in a liquid state, is printed or impregnated on the adhesive base material 11 made of the synthetic resin thin plate, and is brought into close contact with the adhesive base material 11.

Here, the adhesion substrate 11 of the thin synthetic resin plate on which the conductive ink is printed or impregnated is a thin plate made of synthetic resin, as shown in FIG. 3, so that the adhesion of the conductive ink is good, and The electrical resistance value is also low.

This conductive ink is printed on the adhesive base material 12 to form the electrode part 12, and at the same time, the conductive ink is printed or impregnated in a line on the adhesive base material 11 to form the circuit part 13 as shown in FIGS. It is formed as shown in FIG. This circuit section 13 is a single piece, and one end thereof is connected to the electrode section 12, and the other end is connected to an electrocardiograph (not shown) via a connector (not shown).

In this way, by simply printing and impregnating the adhesive base material 11, which is a thin synthetic resin plate, with conductive ink, the electrode portion and the circuit portion can be formed simultaneously, and as a result, the electrode portion 12 and the circuit portion 13 can be integrated. Since the electrodes do not have to be manufactured separately, the biological electrodes can be manufactured at low cost.

14 is an insulating agent for insulating the circuit section 13;
Reference numeral 5 denotes an adhesive material for adhering the adhesion base material 11 to the skin surface M of the living body as shown in FIG.

Next, to explain how to use the biological electrode 10 having the above configuration, as shown in FIG. When the adhesive material 15 of the thin plate adhesion base material 11 is closely attached to the skin surface M, the weak voltage in the living body is derived from the electrode section 12 and guided to an electrocardiograph (not shown) by the circuit section 13 to record an electrocardiogram. can do.

[Effect of idea]

As described above, according to the present invention, by printing a liquid conductive substance on the adhesive base material of a thin synthetic resin plate,
Since a single electrode part and a single circuit part can be formed, biological electrodes can be manufactured at low cost.

Furthermore, since the electrode section and the circuit section can be integrally formed by printing a liquid conductive material, the assembly process becomes efficient and an electrode with stable electrical characteristics can be obtained.

Furthermore, since a thin plate made of synthetic resin is used as the adhesive base material, it is easy to print a liquid conductive substance, and the electrical resistance value of the skin is low, making it suitable as a bioelectrode.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a biological electrode that is an embodiment of the present invention, Fig. 2 is a sectional view taken along the - line in Fig. 1, and Fig. 3 is a sectional view taken along the line -
4 is a plan view of FIG. 1, FIG. 5 is an explanatory diagram of the use of the biological electrode of the present invention, and FIGS. 6, 7, and FIG. 8 is an explanatory diagram of a conventional biological electrode. DESCRIPTION OF SYMBOLS 10... Biological electrode, 11... Adhesion base material of synthetic resin thin plate, 12... Electrode part, 13... Circuit part,
14...Insulating material, 15...Adhesive material.

Claims (1)

[Scope of utility model registration request] It includes at least a single electrode part and a single circuit part formed by printing a liquid conductive substance on an adhesive base material made of a thin synthetic resin plate, and the single circuit part is formed by printing a liquid conductive substance on an adhesive base material made of a thin synthetic resin plate, and the single circuit part A living body electrode characterized by being connected to a living body and coated with an insulating adhesive material so that it can be brought into close contact with a living body.