JPH0344165Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a biological induction electrode, and more specifically, an electrode element that is in close contact with the skin surface of a living body to derive a weak current from within the living body, and an electrode element for this electrode element. An adhesive consisting of an elastic base material that fits and locks, and an adhesive base material that has an opening with a cutout in the center, the upper surface of which is attached to the elastic base material, and the lower surface of which is brought into close contact with the skin surface of the living body. The present invention relates to a biological induction electrode comprising a base material.

[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 this electrocardiograph, in order to electrically connect the input section to the living body, the living body's induction electrode must be brought into close contact with the surface of the living body's skin.

This third electrode is placed in close contact with the surface of the skin.
To explain according to the figure, 1 in the figure is a metal electrode element, a stretchable base material 2 is fitted to this electrode element 1,
In addition, the elastic base material 2 is held between the upper and lower holding members 20 and 21 at the upper and lower sides, and the elastic base material 2 is fixed to the electrode element 1 .

In addition, the bottom part 13 of the electrode element 1 is formed wide and is covered with a conductive covering member 7, and the electrode element 1 allows the bioelectrode to be removed from the skin surface via the conductive covering member 7. This will be derived.

[Problem that the invention attempts to solve]

However, the electrode element 1 in the biological induction electrode having such a configuration is made of metal and is heavy, making it unsuitable for holding by adhesion to the skin surface, and the polarization voltage increases, resulting in unfavorable electrode characteristics.

Further, the electrode element 1 was manufactured by plating silver, but the method of manufacturing the electrode element by silver plating complicates the process, is dangerous, and is expensive to manufacture.

Furthermore, the elastic base material 2 that is fitted with the electrode element 1 is provided with two upper and lower clamping members 2 to maintain the fitted state.
I needed 0.21.

The purpose of the present invention is to solve the problems caused by the electrode element 1 being made of metal, the problem of fitting and maintaining the elastic base material 2 and the electrode element 1, and the like.

[Means for solving problems]

In order to achieve the above object, the present invention provides the following biological induction electrode. That is, the present invention includes a head to which a lead wire is attached, a neck that is located below the head and is formed with a fitting part that is thinner than the head and that can fit and lock the elastic base material.
The head has a bottom that is located below the neck and supports the neck and is wider than the neck so that it can come into contact with the skin surface of the living body, and the head has an outer periphery that extends downward and protrudes toward the end. It has an inclined part,
In addition, metal powder is applied to the outer circumferential surface of the base material of the synthetic resin electrode element, in which a part of this inclined part is recessed to have the same diameter as the neck part, and a recessed part continuous with the neck part is formed. An electrode element coated to provide conductivity, an elastic base material fitted and locked to the fitting part of the neck of the electrode element, and an opening with a cutout in the center, and an upper surface of the elastic base material. The electrode is an inductive electrode for a living body, and includes at least an adhesive base material attached to a material and having a lower surface coated with an adhesive to bring it into close contact with the skin surface of a living body.

[Effect]

In the above configuration, the neck of the electrode element is formed on the lower side of the head and is thinner than the head, so that the expandable base material is fitted and locked.

In addition, since the electrode element has a wide bottom, the contact area with the skin surface is increased and the conductivity is improved.

Furthermore, the head has an inclined part whose outer circumferential part protrudes downward and widens toward the end, and a part of this inclined part is recessed until it has the same diameter as the diameter of the neck part, and is continuous with the neck part. Since the recessed portion is formed, even a small amount of metal powder can be coated well.

Furthermore, since the base material is made of synthetic resin, it is lightweight, and since the outer periphery of the base material is coated with metal powder, it has electrical conductivity.

In addition, the adhesive base material has a notch opening in the center, the upper surface is attached to a stretchable base material that fits the electrode element, and the lower surface is coated with an adhesive base material, so that the outer periphery of the bioinductive electrode can be attached to the skin of the living body. Hold it in close contact with the surface.

〔Example〕

Regarding embodiments of the present invention, how the configuration of the present invention is actually embodied will be described below with reference to the drawings, together with its operation.

FIG. 1 is a perspective view of a living body induction electrode 10 of the present invention. In the figure, 1 indicates an electrode element, and a circular expandable base material 2 is fitted into the electrode element 1. This elastic base material 2 has a removable piece 3 protruding from its periphery,
This makes it easy to attach and detach the biological induction electrode from the skin surface.

Further, an adhesive base material 4 is attached to the lower side of the elastic base material 2, and an adhesive 5 is applied to the lower side of the adhesive base material 4. The induction electrode can be brought into close contact with the skin surface of a living body.

FIG. 2 is a sectional view of an embodiment of the present invention, in which the electrode element 1 has a head 11 to which a lead wire (not shown) is attached, and a neck 12 formed under the head 11. , and a bottom part 13 formed on the lower side of the neck part 12.The base material 14 is made of synthetic resin, and the outer peripheral surface is coated with metal powder such as silver or amorphous alloy as a coating material 15 to make it conductive. gender is given.

The fact that the base material 14 is made of synthetic resin makes it suitable for mass production, reduces costs, and stabilizes attachment to the skin of a living body due to its weight reduction.
This is to block heat conduction and prevent a cold sensation on the skin surface when worn. Further, the outer peripheral surface of the base material 14 is coated with metal powder 15.
This is because the effective area is increased due to the unevenness formed on the outer circumferential surface of the electrode, resulting in better electrode characteristics.

The head 11 has a lead wire (not shown) fitted therein, and has an inclined part 11b whose outer circumferential part protrudes downward and widens at the end. A recessed portion 11a is formed by recessing the neck portion 11a until it has the same diameter as the neck portion 12.

The neck 12 supporting the head 11 is the head 11
It has a fitting part 12a formed thinner and a continuous part 12b continuous with the recessed part 11a of the head. This fitting part 12a does not use a clamping member,
This is to make the fitting and locking with the elastic base material 2 easy and reliable.

That is, when a small hole 2a is made in the center of the elastic base material 2 and the head 11 of the electrode element 1 is inserted into the hole from below, the small hole 2a widens due to the elasticity of the elastic base material 2 as it passes through the inclined part 11b. When the elastic base material 2 reaches the neck portion 12, the small hole 2a is narrowed by the restoring force due to its elasticity since the neck portion 12 is formed thin.

Therefore, the expandable base material 2 is easily fitted into the fitting part 12a of the neck part 11 of the electrode element, and is also clamped and locked between the head part 11 and the bottom part 13.

The recessed portion 11a of the head and the continuous portion 12b continuous with the recessed portion 11a of the neck were formed when coating the metal powder.
This is because even a small amount of metal powder can be coated well, and at the same time, the conductivity is good.

Near the bottom 13 of the electrode element 1, there is a gel-like electrolyte 6 and an electrolyte covering 7 that covers the other electrolyte 6 and makes electrical contact with the skin surface,
The space between the electrode element 1 and the covering body 7 is filled with an electrolyte 6 to improve conductivity.

The biological induction electrode 10 includes the electrode element 1
It has at least various members such as a stretchable base material 2 and an adhesive base material 4.

As described above, in the biological induction electrode of this embodiment, the outer periphery of the synthetic resin base material 2 is coated with the metal powder 15, so that unevenness is formed on the outer periphery of the electrode element 1, increasing the effective area. The electrode properties are improved, and as a result, the weight can be reduced, and due to the weight reduction, when it is brought into close contact with the skin surface, it is stable and difficult to fall off from the skin surface.

Further, the neck portion 12 is made thinner than the head portion 11 and the bottom portion 13 to form a fitting portion 12a.
Since the elastic base material 2 is fitted to the holder, there is no need to provide a clamping member, and the number of members can be saved.
The production process is simplified and production costs are low.

The upper head has an inclined part whose outer periphery protrudes in a downwardly expanding shape, and a part of this inclined part is formed into a concave part continuous with the neck part, so that the base material 14 is made of metal. When coating the powder 15 with the metal powder, even a small amount of metal powder can be coated well.At the same time, when the lead wire is fitted to the head 11, the electrical path with the bottom 13 is shortened, and the electrical The conduction becomes effective and the conductivity also improves.

Furthermore, the adhesive base material 4 coated with the adhesive material 5 allows the living body induction electrode to be reliably brought into close contact with the skin surface of the living body.

In addition, a gel-like electrolyte 6 is provided near the bottom 13 of the electrode element 1, and an electrolyte coating 7 covering the electrolyte 6 is used to improve conductivity to the skin surface.

[Effect of idea]

As described above, according to the present invention, the electrode element is formed by coating the outer peripheral surface of the synthetic resin base material with metal powder, so that unevenness is formed on the outer peripheral surface of the electrode element, increasing the effective area, thereby improving the electrode properties. As a result, the weight can be reduced, and due to the weight reduction, when the living body induction electrode is brought into close contact with the skin surface, it is difficult to fall off from the skin surface and becomes stable.

In addition, since the electrode element is made of synthetic resin as a base material, it is possible to reduce costs through mass production, improve hygiene by being disposable, and at the same time prevent heat conduction, and when worn on the skin. It can prevent cold sensation.

Furthermore, the neck part is made thinner than the head and bottom parts to form a fitting part, the elastic base material is fitted into this fitting part, and the elastic base material is held and locked between the head part and the bottom part. Therefore, there is no need to provide a clamping member, which saves members, and also simplifies the production process and reduces production costs.

The upper head has an inclined part whose outer circumferential part protrudes downward and widens toward the end, and a part of this inclined part is recessed until it has the same diameter as the neck part, and is continuous with the neck part. Since the recessed part is formed, when coating the base material with metal powder, it is possible to coat even a small amount of metal powder well, and at the same time, when the lead wire is fitted to the head,
Shortens the electrical path to the bottom, making electrical conduction more effective and improving conductivity.

In addition, the adhesive base material has an opening with a cutout in the center, and the upper surface is attached to a stretchable base material and the lower surface is coated with an adhesive base material, so that the biological induction electrode can be closely attached to the skin surface of the living body. It has advantages such as being able to hold it stably.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of an embodiment of the biological induction electrode of the present invention, Fig. 2 is a sectional view taken along the - line in Fig. 1, and Fig.
The figure is an explanatory diagram of a conventional example. DESCRIPTION OF SYMBOLS 1... Electrode element, 2... Expandable base material, 4... Adhesive base material, 11... Head, 12... Neck, 12a...
Fitting portion, 13...bottom, 14...base material, 15...
Coating.

Claims (1)

[Scope of utility model registration request] a head portion to which a lead wire is attached; a neck portion formed below the head portion with a fitting portion that is thinner than the head portion and capable of fitting and locking an elastic base material;
The head has a bottom that is located below the neck and supports the neck and is wider than the neck so that it can come into contact with the skin surface of the living body, and the head has an outer periphery that extends downward and protrudes toward the end. It has an inclined part,
In addition, metal powder is applied to the outer circumferential surface of the base material of the synthetic resin electrode element, in which a part of this inclined part is recessed to have the same diameter as the neck part, and a recessed part continuous with the neck part is formed. An electrode element coated to provide conductivity, an elastic base material fitted and locked to the fitting part of the neck of the electrode element, and an opening with a cutout in the center, and an upper surface of the elastic base material. An induction electrode for a living body, comprising at least an adhesive base material attached to a material and having a lower surface coated with an adhesive in order to be in close contact with the skin surface of a living body.