JPH0435640A - Electrode for living body - Google Patents

Abstract

PURPOSE:To facilitate the attachment of electrode plates of electrodes for living bodies to a living body by connecting respective electrical connections between the electrode plates and ends of lead wires and between the other ends of the lead wires and signal output terminals, inseparably. CONSTITUTION:Respective electrode plates 1, 3, 5 are electrically connected to respective lead wires 7, 9, 11 one to one as an unit, and one end of each of the lead wires 7, 9, 11 is electrically connected to each of signal output terminals 13, 15, 17 one to one. The signal output terminals 13, 15, 17 are enclosed in a connector 19 as an unit. The signal output terminals 13, 15, 17 in the connector 19 to be electrically connected to input terminals 25, 27, 29 respectively provided in an input portion 23 of an electrocardiograph can be pressure contacted to respective input terminals by forming the input terminals 25, 27, 29 of spring pins. The attachment of the electrode plates 1, 3, 5 to a living body can be thereby carried out easily.

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 disposable biological electrode used for electrocardiogram examination and the like.

L Conventional technologyJ 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 in 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 Holter electrocardiography, the test is carried out while carrying out daily activities with electrocardiogram electrodes attached.
Two conditions are extremely important.

However, current disposable type electrocardiogram electrodes are separated into an electrode main body part 81 and a lead part 83, as an example of which is shown in FIG.

A method of using such an electrocardiogram electrode is described below.

First, as shown in FIG. 9, the electrode body 81 is attached to a living body according to a predetermined guidance method.

Next, the connecting portion 84 located at one end of the lead portion 83 is connected to the electrode body portion 81 according to a predetermined wiring method.

This connection method includes a hook type as shown in FIG. 8, a magnetic type, a clip type, and the like.

After that, a connector 85 provided at the other end of the lead portion 83
Connect to the input section of the electrocardiograph body or to the relay section of the cable connected to the electrocardiograph.

Note that the above-mentioned connector is usually in the shape of a bottle.

[Problems to be Solved by the Invention] In the conventional electrocardiogram electrode described above, the electrode body and the lead portion are separated, and there are multiple electrode body portions and lead portions. It is easy to connect each lead part incorrectly. The connection between each electrode body and each lead is as follows.
They are determined on a one-to-one basis by a predetermined lead method, and if this connection is incorrect, the correct electrocardiogram signal will not be collected and the test will be invalid.

Furthermore, since the electrode main body and the lead part each have a pair of connection structures such as a hook type as described above, the surface of the electrode main body has no choice but to protrude due to such a connection structure, which may cause damage to the living body. If you go about your daily life with the electrode attached, the protruding part will come into contact with your underwear, etc., so you will feel very uncomfortable if you wear it for a long time. When connecting, it is necessary to apply a strong compressive force to the living body in order to connect the hooks, etc., which poses a problem in that the connection is troublesome and causes strong irritation and discomfort to the living body.

Furthermore, there is a certain limit to the bonding strength between the electrode main body and the lead, and there is also the problem that the lead is easily separated from the electrode when the lead is pulled for some reason during exercise or sleep.

Furthermore, since the electrical connection between the electrode main body and the lead is removable, it has a contact point, and the problem of high possibility of electrical contact failure cannot be avoided due to the structure.

On the other hand, the connector at the other end of the lead part is connected to the input part of the electrocardiograph body or the relay part of the cable connected to the electrocardiograph as described above, but there is a high risk of incorrect wiring at this time. There was also the problem.

The present invention has been made in view of these problems, and it is easy to attach the electrode to a living body, and there is no risk of erroneous connection when connecting it to a measuring device such as an electrocardiograph (also, the electrode can be easily attached to a living body). It has a flat structure with no protruding parts from the surface, so you won't feel any discomfort even when wearing it for a long time, and the installation process is easy and there is no discomfort.In addition, there is no noise caused by poor contact between the electrode main body and the lead part as in conventional electrodes. The purpose of this invention is to provide a biological electrode that is free from these problems.

[Means for Solving the Problems] The present invention that achieves the above object includes: a plurality of biological electrode body parts; a plurality of lead parts each having one end electrically connected to each of the biological electrode body parts; The biological electrode main body and the lead are integrally provided with a plurality of signal output terminals electrically connected to the other end of each of the plurality of lead parts, and a single connector connectable to a measuring instrument. The electrical connection at one end of the lead part and the electrical connection between the other end of the lead part and the signal output terminal part are inseparably connected.

Further, by attaching a display to the living body electrode main body to indicate the mounting position on the living body, the electrode main body can be more easily mounted on the living body.

Furthermore, the present invention includes the above-mentioned biological electrode and a measuring device such as an electrocardiograph that can be connected to the biological electrode.

[Function] The bioelectrode according to the present invention has the bioelectrode main body and the lead part connected together in advance, so it can be attached to the living body simply by pasting the biomedical electrode main body at a predetermined position on the living body. is completed.

At this time, the mounting work will be easier if the mounting position is indicated on the biological electrode main body.

Next, the connector to which the other end of the lead part is connected is connected to the input part of a measuring instrument such as an electrocardiograph.

The connector has a plurality of signal output terminals to which the other end of each lead is electrically connected, and is composed of a single connector. can be connected to.

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

FIG. 1 shows a perspective view of a biological electrode according to the present invention.

The biological electrode shown in FIG. 1 has three biological electrode body parts, each of which is composed of a right chest electrode body part 1, a left abdominal electrode body part 3, and a sternum utilization electrode body part 5.

In addition, five or seven biomedical electrode main bodies may be provided depending on the attachment site.

In order to facilitate attachment to a living body, each biological electrode main body is provided with a guide according to a predetermined guidance method as shown in FIG.
It is preferable to attach an indication 71 such as the name of the part to be attached to the living body.

Note that a display 73 as shown in FIG. 2 may be shown as a display indicating the attachment site.

Each electrode body part 1.3 and 5 has a lead part 7.3, respectively.
9 and 11 in one-to-one correspondence and are integrated, and furthermore, the other ends of these lead portions 7.9 and 11 are connected in pairs to signal output terminal portions 13.15 and 17, respectively. electrically connected at one end.

The signal output terminal sections 13.15 and 17 are combined and integrated into a single connector 19.

The connector 19 is inserted into the input section 23 of the measuring instrument shown in FIG.
．． 15 and 17 are the corresponding input terminals 2 of the input section 23
5.27 and 29 electrically connected.

In order to prevent the connector 19 from being inserted into the input section 23 of the electrocardiograph 21 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 23 to form a temple-sized concave portion.

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

It is also possible to prevent incorrect insertion of the connector 19 into the input section 23 by arranging the signal output terminal sections 13, 15 and 17 asymmetrically.

Next, FIG. 4 shows the state of connection between the biological electrode body 1 and the lead part 7.

A reference electrode 35 made of silver-silver chloride or the like is formed in the center of the biological electrode body l, and the reference electrode 35 and the lead part 7 are electrically connected to each other by an intermediate part 37 made of a thin film of copper or the like. It is connected.

The intermediate portion 37 can be formed by printing or vapor depositing metal such as copper, while the reference electrode 35
is formed by screen printing, vapor deposition, or the like so as to overlap a portion of the intermediate portion 37 after forming the intermediate portion 37.

Further, one end 39 of the lead portion 7 is soldered to the intermediate intermediate portion 37.

Furthermore, FIG. 5 shows the biological electrode main body l shown in FIG.
A cross section taken along line VV is shown.

In addition, FIG. 5 also shows cross sections of a conductive substance, a support, an adhesive, and a release paper, which will be described later.

The biological electrode main body 1 has a reference electrode 35 made of silver-silver chloride formed on a base material 41 made of a polyester film or the like, and the surface of the reference electrode 35 has a high affinity with living organisms and is coated with saline. The conductive material 43 is made of a polymer gel containing an electrolyte such as the like.

Further, on the base material 41, an annular support 45 having a circular hollowed out portion where the conductive substance 43 is located is arranged to sandwich the intermediate portion 37 and the lead portion 7 between the base material 41 and the annular support 45. It's sticky.

Note that the support body 45 is formed from a flexible material such as polyethylene foam.

Furthermore, an adhesive 47 is coated in an annular manner on the surface of the support 45, and the entire surface including the conductive substance 43 is covered with a release paper 49.

When in use, by peeling off the release paper 49, the adhesive 47 and the conductive substance 43 are exposed and can be easily attached to a living body.

FIG. 6 shows the main parts of the connector 19.

FIG. 7 is a sectional view taken along the line ■-■ in FIG. 6.

A flexible substrate 51 such as a polyester film is lined with a base film 53 to maintain strength, and the surface of the flexible substrate 51 is printed with a pattern made of copper or the like, and is further plated with nickel or the like. Signal output terminal portions 13, 15 and 17 are formed.

Lead parts 7.9 and 11 and each signal output terminal part 13.1
5 and 17 are soldered at the connection 90,
electrically connected.

Although not shown in FIG. 6, about half of the lead side of the connector 19 is covered with a covering material such as a heat-shrinkable film for the purpose of protecting the soldering part.
Furthermore, the above-mentioned positioning convex portion is formed on the base film 53 side.

The connector 19 configured in this manner can be inserted into the input section 23 of the electrocardiograph 21 shown in FIG. 3 for electrical connection.

That is, the signal output terminals 13.15 and 17 of the connector 19 come into contact with and are electrically connected to the input terminals 25, 2713 and 29 disposed on the input section 23 of the electrocardiograph 21. , by making the input terminals 25, 27 and 29 elastic spring bins,
The connector 19 can be brought into pressure contact with the signal output terminals 13, 15 and 17, ensuring electrical connection and making it easy to attach and detach the connector 19 to the electrocardiograph 21.

A method of using the biological electrode according to the present invention will be explained below.

First, the release paper 49 affixed to each biological electrode body 1.3 and 5 is peeled off, and the adhesive 47 and conductive substance 43 are removed.
expose.

Next, as shown in FIG. 1 or FIG. 2, a name 71 or a diagram indicating the attachment site of the living body is attached to the surface of each living body electrode main body 1, 3, and 5 opposite to the adhesive 47. 73, the living body electrodes 1, 3 and 5 are attached to predetermined parts of the living body.

Subsequently, the connector 19 to which the other ends of the lead parts 7.9 and 11 are connected is inserted into the input part 23 of the electrocardiograph 21.

The connector 19 has a plurality of signal output terminal parts 1 to which the other ends of each lead part 7.9 and 11 are electrically connected.
3.15 and 17, and is composed of a single connector, and the connector 19 has a positioning convex shape to prevent it from being inserted into the input section 23 of the electrocardiograph 21 in the wrong direction. Since a section is provided, by inserting the input section while aligning the input section into the recessed section formed in the input section 23, it is possible to connect to the electrocardiograph 21 without making an incorrect connection.

[Effects of the Invention] As described in detail above, the present invention includes a plurality of biological electrode main bodies, a plurality of lead parts each having one end electrically connected to each of the biological electrode main bodies, and The biological electrode main body and the lead part are integrally provided with a plurality of signal output terminal parts electrically connected to the other ends of each of the plurality of lead parts, and a single connector connectable to a measuring instrument. The electrical connection at one end of the lead part and the electrical connection between the other end of the lead part and the signal output terminal part are inseparably connected to each other, and are composed of a biological electrode.

Therefore, the electrical connection between the body of the biological electrode and one end of the lead is made in advance in such a way that it cannot be separated. It will not cause excessive stimulation or discomfort.

Further, there is no risk of erroneously connecting the biomedical electrode main body and the lead, unlike in the conventional case, and there is no possibility of the electrode being accidentally disconnected.

On the other hand, since there is no separable connection structure between the biomedical electrode main body and the lead, the biomedical electrode has a flat structure with no protruding parts from the surface, so it can be used for long periods of time. The effect is that there is no discomfort when wearing it.

Furthermore, the other ends of the plurality of leads are gathered together and electrically connected to each signal output terminal provided on a single connector in a manner that cannot be separated in advance. This eliminates the need to individually connect the other end of the section to an electrocardiograph, etc., eliminates the risk of incorrect wiring, and requires only one connection operation, making the connection reliable and easy.

In addition, the electrical connections between the biomedical electrode body and one end of the lead part, and the other end of the lead part and the signal output terminal part are soldered in advance so that they cannot be separated, so there are no electrical contacts. This provides an excellent effect in that there are no problems such as noise generation due to poor contact.

Note that by attaching a display such as a diagram or text indicating the mounting position on the living body to the living body electrode main body, the mounting of the living body electrode main body on the living body becomes more reliable and easier.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing one embodiment of the biomedical electrode according to the present invention, and FIG. 2 is another example of the biological mounting position indication attached to the biomedical electrode main body of the biomedical electrode according to the present invention. Figure 3 is a perspective view of an electrocardiograph; Figure 4 is an explanatory diagram showing the connection state between the biological electrode main body and the lead; Figure 5 is V-V in Figure 4. 6 is an explanatory diagram showing the main parts of the connector, and FIG. 7 is a sectional view taken along the line ■-■ in FIG. 6. It is. FIG. 8 is a diagram showing an example of a conventional electrocardiogram electrode. FIG. 9 is a diagram showing a state in which the electrode body of a conventional electrocardiogram electrode is attached to a living body. (Explanation of symbols of main parts) 1.3.5...Biomedical electrode main body part 7, 9.11...Lead part 13, 15.17...Signal output terminal part 19...Co
Nerita 21... Measuring device (electrocardiograph)

Claims (3)

[Claims] (1) A plurality of biomedical electrode main bodies, a plurality of lead parts each having one end electrically connected to each of the plurality of living body electrode main bodies, and electrically connected to the other end of each of the plurality of lead parts. a single connector which integrally has a plurality of signal output terminal parts and which can be connected to a measuring instrument, and an electrical connection between the biological electrode main body part and one end of the lead part;
and a biological electrode, characterized in that the other end of the lead part and the signal output terminal part are electrically connected in such a way that they cannot be separated. (2) The living body electrode according to claim 1, wherein the living body electrode main body portion has an indication indicating a mounting position on the living body. (3) A biomeasuring device comprising: the biomedical electrode according to claim 1 or 2; and a measuring device connectable to the biomedical electrode.