JPH0543767Y2 - - 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 in particular, a multi-electrode biological electrode that can be easily manufactured in close contact with a living body and can be produced at a low cost. It is related to electrodes.

[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. As shown in FIG. 7, this adhesive base material 2 has adhesive properties on its surface 2a in order to bring the biological electrode 1 into close contact with the skin surface M of the living body as shown in FIG. In addition, 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 fitting groove 7a of the lead wire connecting body 7 is fitted into the lead wire connecting portion 4a protruding from the body, and the biological electrode 1 connected with the lead wire connecting body is placed on 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 section 5 that directly derives weak voltage from the living body and the lead wire connection body 7 and lead wire 6 (i.e. circuit section) that guide the voltage derived from the electrode section 5 to the electrocardiograph are separate parts, they cannot be assembled together. The problem was that the process 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 manufactured at a lower cost has been awaited.

Further, as shown in FIG. 9, when measuring an electrocardiogram, an electrode is placed only at one location on the skin surface M of the body.
It is not only the case where the sticker is pasted, but also two, three, or recently more than 100 places.

When the number of places to be pasted increases in this way, in the case of conventional electrodes in which the electrode 1 and the lead wire 6 are separated and independent, one lead wire 6 is connected to one electrode 1, so a large number of electrodes 1 are attached to the skin surface M. It takes a long time and is troublesome to apply it, and since many lead wires 6 are placed on the skin surface M of the living body, the subject may unconsciously pull on the lead wires 6 during electrocardiogram measurement, resulting in There was a problem in that the electrode 1 fell off the skin surface M of the living body.

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 invention was devised with an eye on the above-mentioned problems, and includes at least an electrode part and a circuit part formed by printing a liquid conductive substance on an adhesive base material made of a thin synthetic resin plate. , a large number of electrical parts are arranged on the adhesive base material, the circuit part is connected to each of the electrode parts, and an insulating adhesive material is applied so that the living body can be closely attached. It is an object of the present invention to provide a means called an electrode-type biological electrode to solve the above-mentioned problems.

[Effect]

In the above configuration, when the electrode parts of the multiple biological electrodes are 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, a weak voltage is generated in the living body. is led out from the electrode part and led from the circuit part to the electrocardiograph, and 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 biomedical electrode according to an embodiment of the present invention, and FIG. 2 is a sectional view of the biomedical electrode shown in FIG. 1, where 10 is a multi-electrode type biomedical electrode.

This biological electrode 10 has an adhesive base material 11 made of a thin synthetic resin plate. This adhesive base material 11 has a rectangular shape and is made of a synthetic resin thin plate. 12
is 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 made of silver or a mixture of silver and silver chloride.
Conductive ink, which is a conductive material made by mixing silver and conductive graphite, or graphite as conductive metal powder, and mixing it with resin and a solvent to form a paste or ink, that is, liquid, is made of the synthetic resin. Thin plate adhesion base material 11
Print it on and make it stick.

The adhesive base material 11, which is a thin synthetic resin plate on which the conductive ink is printed, is made of synthetic resin as shown in FIG. The value is also low.

This conductive ink is printed on the adhesive base material 12 made of a thin synthetic resin plate to form the electrode parts 12, 12, 12, and at the same time, the conductive ink is printed in a line on the adhesive base material 11 made of a thin synthetic resin plate. Alternatively, it is impregnated to form circuit parts 13, 13, 13 connected to the three electrode parts 12, 12, 12, respectively, and the other end is connected to a connector 16 (FIG. 5). Note that in this embodiment, the electrode section 12 and the circuit section 13
We explained the case where three each are provided, but
The number is not limited to just three, but also includes a case where a larger number are provided.

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 are not manufactured separately, the bioelectrode can be manufactured at a low cost, and since the circuit section 13 does not appear outside the adhesive base material 11 made of a thin synthetic resin plate, the subject can easily monitor the electrocardiogram. There is no need to unintentionally pull during measurement.

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 multi-electrode type biological electrode 10 having the above configuration, as shown in FIG. When the adhesive material 15 of the adhesion base material 11 made of a thin synthetic resin plate is brought into close contact with the skin surface, the weak voltage in the living body is extracted from the electrode part 12 and connected to the electrocardiograph (not shown) by the circuit part 13. electrocardiograms can be recorded.

In this case, one adhesive base material 11 made of a thin synthetic resin plate
Since a large number of electrode parts 12 and circuits are provided in the body, a large number of electrode parts 12 and circuit parts 13 can be applied to the living body at once by simply adhering the adhesive base material 11 made of a thin synthetic resin plate to the skin surface of the living body. It can be attached to the skin surface M, and the time for attaching the electrode 10 to the skin surface M of the living body can be shortened.

[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 the electrode part and the circuit part can be formed, the biological electrode can be manufactured at low cost.

Further, since the electrode part and the circuit part 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.

Further, since the adhesive base material is provided with a large number of electrode parts and a circuit part connected to each of the electrode parts, a large number of electrodes can be applied to the skin surface of a living body in a short period of time, and wearability is improved.

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 has good fit to the skin, making it suitable as a biological electrode.

In addition, since the circuit part was formed by printing a liquid conductive substance, the circuit part itself is contained within the adhesive base material and is not exposed outside the adhesive base material of the thin synthetic resin plate. This has the advantage that there is no risk of the examiner pulling the circuit section and causing the multi-electrode type electrode to fall off the skin surface of the living body.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a multi-electrode biomedical electrode that is an embodiment of the present invention, Fig. 2 is a sectional view taken along the line - - of Fig. 1, and Fig. 3 is a perspective view of a synthetic resin thin plate adhesive base material. Figure 4 is a plan view of Figure 1, Figure 5 is an explanatory diagram of the use of the multi-electrode type biological electrode of the present invention, Figures 6 and 7 are
8 and 9 are explanatory diagrams of conventional biological electrodes. DESCRIPTION OF SYMBOLS 10...Multi-electrode type biological electrode, 11...Synthetic resin thin plate adhesive base material, 12...Electrode part, 13...
Circuit part, 14...Insulating material, 15...Adhesive material.

Claims (1)

[Scope of utility model claims] It comprises at least an electrode part and a circuit part formed by printing a liquid conductive substance on an adhesive base material made of a thin synthetic resin plate, a large number of these electrode parts are arranged on the base material, and the circuit part is A multi-electrode type biological electrode, characterized in that it is connected to each of the electrode parts and coated with an insulating adhesive material so that it can be brought into close contact with a living body.