JPH0467841A - Electrode for living body - Google Patents

Abstract

PURPOSE:To eliminate a projecting object on the sticking side to a living body, and to eliminate a sense of incompatibility by providing an electrode part provided on the lower face of a plate-like electrode main body, and an electric conductor formed in a hole part penetrated and pierced from the lower face to the upper face of the electrode main body and connected electrically to the electrode part. CONSTITUTION:In the center of the lower face of a plate-like electrode main body 3 of a living body electrode 1, an electrode part 11 consisting of silver-silver chloride, etc., it formed, and also, in a position being adjacent to the electrode part 11, a thin layer part 13 consisting of a metal such as copper, etc., is formed. In the thin layer part 13, an opening of the lower face side of the hole part 6 penetrated and pierced from the lower face to the upper face of the electrode main body 3 exists. The electrode part 11 is connected electrically to a lead part 8 through the thin layer part 13, an electric conductor 15 and a thin film 5. On the lower face of the living body electrode 1, that is, on the sticking side face to the living body, a projecting part scarcely exists, and even if this electrode is installed in the living body extending over many hours, there is no sense of incompatibility, and no sense of discomfort is given to the living body.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an electrode used for biological measurement, and more specifically to a biological electrode used for electrocardiogram examination and the like.

[Conventional technology] Among biometric measurements, electrocardiography is a very common test, and in recent years it has been used not only for school child examinations, medical checkups, and adult disease examinations, but also for general wards and IC examinations in hospitals.
It is now widely used in the U, CCU, etc.

An essential element for this electrocardiogram test is an electrocardiogram electrode for collecting electrocardiogram signals from a living body. There are roughly two types of electrodes.

That is, there are two types: a type that is reused many times and a disposable type that is used only once.

This disposable type is for ICU.

This is used when performing an electrocardiogram test over a relatively long period of time, such as an electrocardiogram monitoring test in a CCU or a long-term electrocardiogram test (commonly called a Holter electrocardiogram test).

Therefore, it is basically required to have long-term stability and no discomfort when worn for a long time.

In particular, in the Holter electrocardiogram test, the above two conditions are extremely important because the test is carried out while carrying out daily life while wearing electrocardiogram electrodes.

An example of the electrocardiogram electrode described above is shown in FIG. In FIG. 7, an electrocardiogram electrode 71 has an electrode portion (made of silver-silver chloride, etc.) on the lower surface of a flat electrode body 73, that is, on the side to be applied to a living body.
A reference electrode) 75 is formed. On the other hand, one end of a lead part 77 for transmitting an electrical signal obtained from the electrode part to a measuring device such as an electrocardiograph is connected to an end part of a connecting part 79 integrally extending from the electrode part 75. They are placed one on top of the other, and both are physically strongly caulked by a caulking plate 81 made of aluminum or the like.

In this way, the electrode part 75 and the lead part 77 are electrically connected, but the reason why the well-known soldering technique is not used for the electrical connection between the two is that the electrode part 75 and the lead part 77 are made of silver-silver chloride. This is because the portion 75 is sensitive to heat.

[Problems to be Solved by the Invention] However, in the electrocardiogram electrode described above, the electrical connection between the electrode part and the lead part is made by the caulking plate, so that the caulking plate does not protrude toward the side of the electrocardiogram electrode to which the living body is attached. Unavoidably, there was a problem in that it felt uncomfortable when worn for a long time and caused discomfort to the living body.

In addition, since the electrode part and the lead part are crimped together and are only in physical contact, if noise is generated due to poor contact or an external force is applied in the direction of separating them, There was a problem that the lead part might come off from the electrode part.

The present invention has been made in view of such problems, and an object of the present invention is to provide a biological electrode that does not cause discomfort to a living body even when worn for a long time.

In addition, the present invention has a strong electrical connection between the electrode part and the lead part, does not come off accidentally, does not cause problems such as noise generation due to poor contact, and provides stable and highly accurate biological information values. The purpose is to provide a biological electrode that can collect

[Means for Solving the Problems] The present invention, which achieves the above object, includes a flat electrode body, an electrode portion disposed on the lower surface of the electrode body, and a penetrating portion extending from the lower surface to the upper surface of the electrode body. This is a biological electrode comprising a drilled hole and a conductor formed in the hole and electrically connected to the electrode section.

Here, the electrode part and the conductor have electrical conductivity and are electrically connected through a thin layer part disposed on the lower surface of the electrode body, so that the lower surface of the electrode body becomes smoother.
There is no discomfort even if it is attached to a living body for a long time (
,preferable.

The present invention also provides the above living body electrode, a lead portion disposed on the upper surface side of the living body electrode and having one end electrically connected to a conductor of the living body electrode, and the other end of the lead portion. This is a biological electrode device characterized by having a signal output terminal portion electrically connected to a measuring device and a connector connectable to a measuring device. Furthermore, the present invention provides a biological information measuring device comprising the biological electrode device described above and a measuring device electrically connectable to the biological electrode device.

[Function] When using the biological electrode according to the present invention, first,
The lower surface side of the biological electrode on which the electrode part is disposed is attached to a predetermined part of the living body.

The action potentials of the muscles and heart of the living body are guided to the electrode part of the living body electrode, and are transferred to the lead part through the conductor formed in the hole that penetrates from the bottom surface of the electrode body to the top surface. The signal is then transmitted to a measuring device such as an electrocardiograph via a connector connected to the other end of the lead section.

At this time, the lead part is arranged on the upper surface side of the biological electrode, and the other end of the lead part is electrically connected to the conductor embedded in the hole, so that the lead part and the electrode part are connected to each other. The electrical connection part is not located on the lower surface of the biological electrode, and as a result, there is no protrusion on the lower surface of the biological electrode (
Since the surface is smooth, there is no discomfort even when it is worn on a living body for a long time.

[Example] Hereinafter, the present invention will be explained in detail based on illustrated embodiments.

FIG. 1 shows the top surface of a biological electrode 1 according to the present invention.

A thin film 5 made of metal such as copper is formed on the upper surface of the electrode body 3 made of a flat polyester film or the like by printing or vapor deposition.
A hole (so-called through hole) 6 is opened from the lower surface to the −F surface.

On the other hand, one end of the lead portion 8 made of a metal conductor such as copper is soldered to the thin film 5 at the connection portion 7 .

Further, the lead portion 8 is arranged and fixed in a bent state as shown as a bent portion 9 in FIG. 1 in a portion between the connecting portion 7 and the peripheral edge of the electrode body 3.

The lead part 8 may be straight in the part between these parts, but preferably, it is bent and fixed to the upper surface of the electrode body 3 as shown in FIG. It plays the role of buffering external force from the outside in the radial direction, and the external force is not directly applied to the connecting portion 7.

Note that the bent portion 9 may be bent at least once, but it is preferable to bend it multiple times.

Furthermore, the shape of the bend is not limited to that shown in the drawings.

In short, any shape is sufficient as long as the external force transmitted through the lead portion 8 and reaching the connection portion 7 is buffered.

FIG. 4 shows the lower surface of the biological electrode 1 according to the present invention.

An electrode part 11 made of silver-silver chloride or the like is formed at the center of the lower surface of the flat electrode body 3 of the biological electrode l, and a thin layer part made of metal such as copper is formed adjacent to the electrode part 11. 1
3 is formed.

The thin layer part 13 can be formed by printing or vapor depositing a metal such as copper. On the other hand, the electrode part 11 can be formed by forming a screen so as to partially overlap the thin layer body after forming the thin layer body. It is formed by printing or vapor deposition.

In this way, the electrode section 11 and the thin layer section 13 are formed so as to overlap, so that they are electrically connected.

Further, in the thin layer portion 13, there is an opening on the lower surface side of the hole 6 which is penetrated from the lower surface to the upper surface of the electrode main body 3 described above.

As described above, this hole 6 opens into the thin film 5 on the upper surface side of the electrode body 3.

FIG. 2 shows II-II of the biological electrode 1 shown in FIG.
A cross section along the line is shown.

A conductor 15 made of copper or the like is usually formed by plating on the inner wall of the hole 6, which is called a through hole. , are electrically connected via the conductor 15.

Note that the conductor 15 can also be formed, for example, by pouring solder into the hole 6 made in the electrode body 3 and solidifying it.

By forming the conductor 15 in this way, the thin film 5 and the thin layer portion 13 are electrically connected, while the electrode portion 11 and the thin layer portion 13 are partially laminated as described above. Since they are electrically connected, the electrode portion 11 and the conductor 15 are electrically connected as a result.

Further, the conductor 15 is electrically connected to the thin film 5, and one end of the lead part 8 is soldered to the thin film 5 at the connection part 7, as described above, so that the electrode part 11 is connected to the thin film 5.
3. It will be electrically connected to the lead portion 8 via the conductor 15 and the thin film 5.

In the above example, the case where one end of the lead part 8 is soldered to the thin film 5 has been described, but the present invention is not limited to this. For example, when the tip of the lead part 8 is introduced into the hole part 6, The connection may be made by pouring solder into the portion 6 and solidifying it.

As is clear from FIGS. 2 and 4, there is almost no protruding part on the lower surface of the living body electrode l formed in this way, that is, the side surface to which it is attached to the living body, and even if it is attached to the living body for a long time. There is no discomfort and no discomfort is caused to living organisms.

In addition, it is preferable that an adhesive tape I7 made of paper, cloth, or the like is further applied to the entire upper surface of the biological electrode l shown in FIG. 2, as shown in FIG. By pasting the adhesive tape 17 in this manner, the lead portion 8. The thin film 5 and the conductor 15 are protected from the outside, and the bent part 9 of the lead part 8 is fixed to the electrode body 3, so that the structure can be such that external force transmitted through the lead part 8 is difficult to be transmitted to the connection part 7.

FIG. 5 shows a biological electrode device 19 equipped with the biological electrode 1 described above.

The biological electrode device 19 shown in FIG. 5 has three biological electrodes 1, one for the right chest, one for the left abdomen, and one for the sternum area.

In addition, five or seven biological electrodes may be provided depending on the attachment site.

In order to facilitate attachment to the living body, it is preferable to label each living body electrode 1 with a label such as the name of the part to be attached to the living body according to a predetermined guidance method as shown in FIG.

Each biological electrode l is electrically connected and integrated with a lead part 8, and each other end of each lead part 8 is electrically connected to the signal output terminal part 21 on a one-to-one basis. has been done.

In addition, the biological electrode 1 and the lead part 8 may be detachable as necessary.

The signal output terminal section 21 is integrated into a single connector 23.

The connector 23 is inserted into the input section 27 of the measuring instrument shown in FIG.
1 is electrically connected to each corresponding input terminal 29 of the input section 27 .

In order to prevent the connector 23 from being inserted into the input section 27 of the electrocardiograph 25 in the wrong direction, for example, although not shown in the drawings, a positioning convex portion is provided, and the input section corresponds to the convex section. It is preferable that a convex portion be inserted into 27 to form a temple-sized concave portion.

Note that a positioning bottle or the like may be formed instead of the positioning convex portion.

Furthermore, incorrect insertion of the connector 23 into the input section 27 may be prevented by making the arrangement of the signal output terminal section 21 asymmetrical.

In this way, the biological information measuring device according to the present invention is constructed from the biological electrode device and the measuring device.

[Effects of the Invention] As described above in detail, the present invention includes a flat electrode body, an electrode part disposed on the lower surface of the electrode body, and a hole that penetrates from the lower surface to the upper surface of the electrode body. It is composed of a biological electrode comprising a sagging hole and a conductor formed in the hole and electrically connected to the electrode.

Therefore, since there is no protrusion on the lower surface side of the biological electrode according to the present invention, that is, the side to which it is attached to a living body, there is no discomfort even when it is attached to a living body for a long time, and it does not cause discomfort to the living body. There is no.

In addition, according to the present invention, the electrode part and the lead part can be electrically firmly connected without being mechanically caulked as in the past, so that the lead part does not come off inadvertently, and the contact It is possible to collect stable and highly accurate biological information values without problems such as noise generation due to poor contact.

In addition, the electrode part and the conductor have electrical conductivity and are electrically connected through a thin layer part arranged on the lower surface of the electrode body, so that the lower surface of the electrode body can be made smoother. Moreover, since there are no contacts, there are no problems such as poor contact during use.

Further, according to the present invention, the above-described biological electrode, a lead portion disposed on the upper surface side of the biological electrode and whose one end is electrically connected to the conductor of the biological electrode, and the lead portion A living body electrode device is provided, which includes a connector that has a signal output terminal portion electrically connected to the other end and is connectable to a measuring device.

According to this biological electrode device, in addition to the above-mentioned effects, since the biological electrode, the lead part and the connector are assembled in advance, it is easy to apply the biological electrode to the biological body and connect the connector to the measuring instrument. can be done quickly and easily.

Furthermore, according to the present invention, there is provided a biological information measuring device comprising the above-mentioned biological electrode device and a measuring device electrically connectable to the biological electrode device.

Therefore, even when used for a long time, biological information can be measured with high accuracy without causing discomfort to the living body.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the upper surface of the biomedical electrode according to the present invention, FIG. 2 is a cross-sectional view of the biomedical electrode shown in FIG. 1 along line II-II, and FIG. FIG. 4 is a cross-sectional view showing the state in which an adhesive tape is attached to the upper surface of the biological electrode according to the present invention, FIG. 4 is a diagram showing the lower surface of the biological electrode according to the present invention, and FIG. FIG. 6 is a perspective view of an electrocardiograph; FIG. 7 is a bottom view of an example of a conventional electrocardiogram electrode. Fig. 1 (Explanation of symbols of main parts) l...Biomedical electrode 3...Electrode body 6...Hole part 8...Lead part 11...Electrode part 13...Thin layer part 15 ... Conductor 19 ... Biological electrode device 23 ... Connector 25 ... Electrocardiograph (measuring device) Fig. 3 Fig. 5

Claims (4)

[Claims] (1) a flat electrode body; an electrode section disposed on the lower surface of the electrode body; a hole penetrating from the lower surface to the upper surface of the electrode body; A biological electrode comprising: a conductor electrically connected to an electrode part; (2) The biological electrode according to claim 1, wherein the electrode portion and the conductor are electrically conductive and electrically connected via a thin layer portion provided on the lower surface of the electrode body. (3) The biological electrode according to claim 1 or 2, and a lead portion disposed on the upper surface side of the biological electrode and having one end electrically connected to a conductor of the biological electrode, and the lead portion. A biological electrode device comprising: a connector having a signal output terminal portion electrically connected to the other end thereof and connectable to a measuring device; (4) the biological electrode device according to claim 3; a measuring device electrically connectable to the biological electrode device; A biological information measuring device equipped with the following.