JPH0536401Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial 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 easily adheres to a living body and can be produced 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 coupling portion 4a protruding from the upper surface side, and an Ag-bonding portion 4a protruding from the lower surface 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). ).

[Problem that the invention attempts 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 fitting groove 7a of the lead wire connection body 7 is fitted into the lead connection portion 4a protruding from the body, and the biomedical electrode 1 to which the lead wire connection body 7 is connected is attached to the skin surface M of the living body. Electrocardiograms may be recorded in close contact.

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. Furthermore, since the electrode part 5 that directly derives weak voltage from the living body and the lead wire connection body and lead wire (i.e. circuit part) that lead the voltage derived from this electrode part 5 to the electrocardiograph are separate parts, the assembly process is simplified. The problem was that it was complicated and the production cost was 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 produced 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 for solving problems]

Therefore, this invention was devised by focusing on the above-mentioned problems, and consists of an electrode part and a circuit part formed by printing and impregnating a liquid conductive substance on a woven fiber adhesive base material. The above-mentioned problems are solved by providing at least a means called a biological electrode in which the circuit part contacts the electrode part and is coated with an insulating adhesive so that it can be brought into close contact with the living body. The purpose is to

[Effect]

In the above configuration, when the electrode part of the biological electrode is brought into contact with the skin surface of the living body, and the adhesive of the adhesive base material is brought into contact with the skin surface of the living body, the weak voltage inside the living body is derived from the electrode part and circuited. The electrocardiogram is then led to the electrocardiograph, where the 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 has an adhesive base material 11.
This adhesive base material 11 has a woven fabric shape and uses natural fibers. Reference numeral 12 denotes an electrode portion for extracting a weak voltage from the living body through a cream or the like.

This electrode part 12 is made of silver or a mixture of silver and silver chloride.
A conductive ink, which is a conductive material made by mixing silver and conductive graphite, or graphite as a conductive metal powder, and mixing it with a resin and a solvent to form a paste or ink, that is, a liquid, and the adhesive base. The material 11 is printed or impregnated to make it adhere closely.

The adhesive base material 11 on which the conductive ink is printed or impregnated is a woven material as shown in FIG. The electrical resistance value is also low.

This conductive ink is printed or impregnated on the adhesive base material 11 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 FIG. It is formed as shown in FIGS. 2 and 4. One end of this circuit section 13 is connected to the electrode section 12, and the other end is connected to an electrocardiograph (not shown) via a connector (not shown).
is connected to.

In this way, by simply printing and impregnating the adhesive base material 11 with conductive ink, the electrode part and the circuit part can be formed simultaneously and integrally. electrodes can be manufactured at low cost.

14 is an insulating agent for insulating the circuit section 13;
Reference numeral 5 denotes an adhesive 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 15 of the material 11 is closely attached to the skin surface M, the weak voltage inside the living body is transferred to the electrode part 12.
It is possible to record an electrocardiogram by being guided to an electrocardiograph (not shown) by the circuit section 13.

[Effect of idea]

As described above, according to the present invention, the electrode part and the circuit part can be formed by printing and impregnating a woven fiber adhesive base material with a liquid conductive substance, so that a biological electrode can be produced at a low cost.

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

Furthermore, since a fibrous material in the form of a fabric is used as the adhesive base material, it is easy to impregnate the liquid conductive material and has good fitting properties to the skin, making it suitable as a biological electrode.

[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 -
The figure is a perspective view of a woven fiber adhesive substrate, FIG. 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, FIG. 8 is an explanatory diagram of a conventional biological electrode. 10... Biomedical electrode, 11... Adhesive base material, 12
...Electrode part, 13...Circuit part, 14...Insulating material,
15... Adhesive.

Claims (1)

[Scope of utility model registration request] It includes at least an electrode part and a circuit part formed by printing and impregnating a woven fiber adhesive base material with a liquid conductive substance, the circuit part being connected to the electrode part, and an insulating material. A biological electrode that is coated with a certain adhesive so that it can adhere closely to a living body.