KR900006903Y1 - Biomulti electrode - Google Patents

Abstract

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Description

Multipolar Biological Electrode

1 is a perspective view of a multi-electrode type living body electrode in one embodiment of the present invention.

2 is a cross-sectional view taken along the line II-II of FIG.

3 is a perspective view of a basic element made of a nonwoven fabric.

4 is a plan view of FIG.

5 is an explanatory diagram of the multi-electrode type living body electrode of the present invention.

6 to 10 use a conventional electrode for living body

The present invention relates to a biological electrode for deriving a weak voltage from the living body, and more particularly to a multi-electrode biological electrode that can be easily in close contact with the living body, can be manufactured at low cost.

As is known, the bioelectricity generated in the living body is induced by the activity of the heart, brain and muscles.

In particular, the bioelectricity generated in the heart diagnoses the abnormality of the heart by recording a weak voltage induced on the epidermal surface of the living body by an external electrocardiogram. When using an electrocardiograph, the electrode for a living body is brought into close contact with the surface of the epidermal layer of the living body in order to electrically couple the input unit to the living body.

A conventional electrode in close contact with the surface of its epidermal layer will be described with reference to FIGS. 6 and 7, wherein reference numeral 1 in the drawings denotes a living electrode.

The biological electrode 1 was composed of a disk-shaped basic element 2. Fundamental element 2, as shown in FIG. 8, has a sticky surface on the adhesive surface 2a as shown in FIG. 7, in order to adhere the electrode 1 for living body to the surface M of the epidermal layer of the body. Opening 3 is formed.

The lead wire connecting device 4 is joined to the upper surface side (surface side) of the basic element 2 to seal the electrical opening 3. In the lead wire connecting device 4, the lead wire coupling portion 4a protrudes on the upper surface side, and the Ag-Agcl disc-shaped electrode portion 5 is connected to the lower surface side as shown in FIG. As shown in FIG. 8, the lead wire connecting member 7 to which the lead wire 6 is connected is connected to the lead wire coupling portion 4a, and the other end of the lead wire 6 is connected to an electrocardiograph (not shown).

To record an electrocardiogram using the living body electrode 1 having the above-described structure, first, as shown in FIG. 8, the basic element 2 of the living body electrode 1 is adhered to the skin surface of the living body, and then the lead wire connector The lead wire connecting member 7 is attached to the recessed portion 7a (hereinafter referred to simply as “indentation”) 7a of the 7 so as to adhere to the lead wire coupling portion 4 protruding from the lead wire connecting device 4 of the electrode 1 for living body. Connect the electrode 1 and record the weak voltage derived from the electrode portion 5 through the lead line 6 to an electrocardiograph (not shown).

In another method, the biological electrode 1 in which the lead wire connector 7 is connected by fixing the recess 7a of the lead wire connector to the lead coupling portion 4a protruding from the lead wire connection device 4 of the biological electrode 1. Is in close contact with the epidermal surface of the living body to be recorded on the ECG.

The electrocardiogram can be measured using any of the methods described above, and when such a living electrode 1 is consumed, the measurement of 1 is discarded after disposal. Nevertheless, the electrode portion 5 of the electrode 1 for living body uses the above-mentioned expensive metal such as Ag-Agcl. In addition, the lead wire connecting body 7 and the lead wire 6 (that is, the circuit part) for deriving a weak voltage from the living body and the voltage derived from the electrode part 5 to the electrocardiograph are separate components. There is a problem that the production cost is expensive due to complexity. In particular, since the biological electrode 1 is used in combination of several, the expense cannot be ignored. Therefore, it is expected to develop a living electrode 1 having a low production cost.

In addition, as shown in FIG. 9, when measuring an electrocardiogram, at least one electrode 1 of the epidermal surface M of the body needs to be attached, and in recent years, at least 100 electrodes may be adhered.

In the conventional living body electrode 1, the electrodes 5 and the lead 6 are separate parts, and the lead 6 and the electrode 1 are connected in a one-to-one correspondence, and the bonding of the plurality of electrodes 1 to the epidermal surface M takes a long time and is cumbersome. to be. Further, since several lead wires 6 are arranged on the epidermal surface M of the living body, there is also a problem that the detector unintentionally pulls the lead wire 6 during the electrocardiogram measurement, and as a result, the electrode 1 falls from the epidermal surface M of the living body.

Further, since the living body electrode 1 can be attached to the back in the case of a intensive care patient, the lying heavy patient has a living body electrode 1 on the back, which is inconvenient and cannot be used to satisfy the conventional living body electrode.

In addition, when the electrode portion 5 is directly in contact with the surface of the epidermal layer, there is a problem that the weak voltage cannot be accurately measured by the contact resistance on the surface of the skin.

Therefore, as shown in FIG. 10, when the contact resistance of the living body is reduced, when the water-containing gel 8 is attached to the living body electrode 1 as described above, the water-containing gel 8 is attached to the plurality of living body electrodes 1. Fixing it at once is cumbersome and requires a long time.

The present invention is intended to solve the above problems.

According to the present invention, an adhesive substrate made of a nonwoven fabric, an electrode portion and a circuit portion formed by printing or depositing a conductive material in a liquid state on the adhesive substrate, an electrolyte material on the electrodes to reduce skin resistance of a living body, and a biological electrode It provides a multi-electrode type living body electrode made of an insulating adhesive for bringing the adhesive to the living body, wherein the electrode portion is disposed on the adhesive base and composed of a plurality of electrodes, the circuit portion is connected to each electrode .

In the above structure, the electrode part of the plurality of biological electrodes is brought into close contact with the skin surface of the living body, and the insulating adhesive material on the adhesive base material of the nonwoven fabric is adhered to the skin, and the weak voltage in the living body is derived from the electrode part. The electrocardiogram is recorded from the circuitry through the electrocardiograph.

According to the drawings will be described in detail the configuration and operation of the subject innovation.

1 is a perspective view of an electrode for a living body according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view of FIG. Reference numeral 10 denotes a multielectrode type living body electrode.

The biological electrode 10 has an adhesive base 11.

The adhesive base 11 is rectangular and made of nonwoven fabric such as polyethylene, polyester, polypropylene, or the like.

Reference numeral 12 is an electrode unit for deriving a weak voltage from the living body.

The electrode portion 12 is made of a conductive ink that is in close contact with the adhesive base 11, and the conductive ink is to be printed on the adhesive base 11 or to penetrate the adhesive base 11. The conductive material is in the form of a paste or ink, namely silver or a mixture of silver and silver chloride, a mixture of silver and conductive graphite or graphite, a conductive metal powder, and a liquid form made by mixing a metal powder with a resin and a solvent.

The adhesive base 11 coated with or penetrated by the conductive ink is made of nonwoven fabric. As shown in Fig. 3, it is made of a porous element having an irregular surface. Therefore, it is easy to penetrate or penetrate the conductive ink with the porous pores in the printed place.

This means that the range of selectable conductive inks increases.

Moreover, the adhesive base 11 provides a widened surface area and the electrical resistance to the skin surface is reduced.

In addition, the nonwoven fabric makes the skin feel comfortable and pleasant.

Reference numeral 13 is Leads, and this circuit portion prints or penetrates the conductive ink on the adhesive base 11 to form the electrode portion 12, and simultaneously connects the conductive ink to the adhesive base 11 on the line or to each of the three electrode portions 12. Each circuit portion 13 is formed, and the other end thereof is connected to the connector 17 (FIG. 5). This embodiment has been described in the case where three electrode portions 12 and three circuit portions 13 are provided, respectively, and the present invention is not limited to three.

In this way, only the conductive ink is printed and penetrated by the adhesive base 11, so that the electrode 12 and the circuit 13 can be integrally formed at the same time, and there is no need to manufacture them separately. Because they do not appear within the subject, the subject never unconsciously pulls them while measuring the ECG.

Reference numeral 14 denotes an electrolytic material adhered to the electrode portion 12, and its water-containing gel layer is made from gelatin, agar, polyacrylamide, and the like, and has considerable adhesiveness and conductivity.

When the electrolytic material 14 comes into close contact with the skin surface of the living body, a weak voltage induced on the surface passes through the electrode portion 12. If the electrode part 12 is in direct contact with the surface of the skin, a weak voltage cannot be accurately measured due to the contact resistance of the skin surface, and a water-containing gel is adhered to the biological electrode to reduce the contact resistance of the skin surface. Although the weak voltage is measured through the water-containing gel, it is cumbersome and cumbersome to fix each water-containing gel to the electrode for every time the weak voltage is measured. It is applied to remove the inconvenience of fixing each water-containing gel.

Reference numeral 15 denotes an insulator insulating the circuit portion 13, 16 denotes an adhesive for contacting the adhesive base 11 with the skin surface M of the living body and the adhesive 16 of the adhesive base 11 with the skin surface M as shown in FIG. .

A method of using the multi-electrode type living body electrode as described above will be described. As shown in FIG. 5, the multi-electrode type living body electrode 10 is in close contact with the skin surface M of the living body through the electrolytic material. If so, the weak voltage in vivo can be derived from the electrode portion 12 and recorded by the circuit portion 13 on the electrocardiogram through an electrocardiograph (not shown).

In this case, since a plurality of electrode portions 12 and circuit portions 13 are provided on one adhesive substrate 11, the adhesive substrate 11 adheres closely to the skin surface of the living body so that the plurality of electrodes 12 and the circuit portion 13 can be adhered to the skin surface M of the living body at once. The mounting time of the electrode 10 on the skin surface M of the living body can be shortened.

According to the present invention described above, since the electrode portion and the circuit portion can be formed by printing and penetrating a liquid conductive material in a basic element made of a nonwoven fabric, the electrode for a living body can be manufactured at low cost.

In addition, since the conductive part in the liquid state can be penetrated by printing, the electrode part and the circuit part can be integrally formed, so that the assembly process can be streamlined and an electrode having stable electrical characteristics can be obtained.

Furthermore, since a plurality of electrode portions and a circuit portion respectively connected to the electrode portions are provided in the adhesive base material, the plurality of electrodes can be adhered to the skin surface of the living body in a short time, and the mountability is improved.

In addition, since the basic element is made of nonwoven fabric, the liquid conductive material is easy to penetrate and has good fit to the skin.

In addition, since the circuit portion is formed by printing and penetrating the liquid conductive material, it can be seen that the circuit portion itself is in the adhesive base material and is not exposed out of the adhesive base, so that the subject unconsciously pulls the circuit part to multi-electrode. There is no possibility of dropping the type bioelectrode from the skin surface of the living body.

And since the electrolytic substance which reduces the adhesion resistance of the skin of a living body is apply | coated to an electrode part, when contacting a living body electrode to a skin surface, it is not necessary to fix each water-containing gel to a living body electrode beforehand. It is troublesome, not bothersome and efficient.

Claims (1)

An adhesive base 11 made of a nonwoven fabric, an electrode portion 12 and a circuit portion 13 formed by printing and penetrating a liquid conductive material into the adhesive base 11, and the electrode portion 12 includes the adhesive base ( 11, which is composed of a plurality of electrode portions 12 disposed on the circuit portion 13 is connected to the respective electrode portions 12, and is applied to the electrode portion 12 to the skin surface of the living body A multi-electrode type biological electrode comprising an electrolytic material for lowering the contact resistance of an insulating material and an insulating adhesive for bringing the electrode for a living body into close contact with a living body.