JPH0321210Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to an electrode part for a bioinduction electrode, and more specifically, a bioinduction electrode that comes into close contact with the skin surface of a living body and derives weak bioelectricity from within the living body. This relates to an electrode part that is a part of the.

[Conventional technology]

Conventionally, in vivo induction electrodes have been used to measure the heart, brain,
Bioelectricity induced by muscle activity is derived from the skin surface and connected to an external electrocardiograph to diagnose abnormalities in the body from the outside.

Conventional examples of this biological induction electrode are shown in Figures 7 to 12.
This will be explained according to the diagram.

FIG. 7 is a schematic explanatory diagram of a conventional biological induction electrode, with a portion cut away.

In the figure, 1 is the skin surface of the living body, 2 is an electrode portion that is in close contact with the skin surface 1, and a connecting portion 3 is connected to the electrode portion 2 via a hook 21a, and the connecting portion 3 is connected to a connecting cord 8. and is connected to an external electrocardiograph (not shown).

FIG. 8 is a perspective view including the top surface of the electrode section 2;
In the figure, 4 is an adhesive base material having a notch 4a near the center, and the lower surface is an adhesive lower surface 4b coated with adhesive.
It is designed to easily adhere to the skin surface 1 of the living body. Since the electrode part 2 is in close contact with the skin surface 1 of the living body, it is disposable from a sanitary point of view.

A reinforcing member 20 is attached to the upper surface 4c of the adhesive base material 4, covering the notch 4a.

This reinforcing member 20 reinforces the adhesive base material 4 and stabilizes the bonding with an electrode element 21, which will be described later.

An electrode element 21 is provided through the center of the reinforcing member 20, and a hook 21a is provided on the upper part of the electrode element 21.

The neck 21b of this hook 21a is formed thinly.
is clamped by the connection part 3 as described later.

FIG. 9 is a perspective view including the lower surface of the electrode section 2. The electrode element 21, which is provided through the reinforcing member 20, has a flat lower surface, making it easy to make close contact with the skin surface.

FIG. 10 is a perspective view including the top surface of the connecting portion 3, where 3a is the connecting portion main body and 3b is the lid.

A push button 22 is provided on the connecting portion main body 3a, and by pressing the push button 22 with a finger F, the connecting portion 3 can be connected to the electrode portion 2.

FIG. 11 is a perspective view including the bottom surface of the connecting part 3, and the push button 22 has a hole 22a inside thereof shown by a dotted line.
It is perforated.

Also, a metal fitting 23 is attached to the bottom surface, and a metal fitting 23 is attached to the bottom surface.
3 is provided with a hole 23a.

Normally, the push button 22 is biased by a spring member (not shown), so that the hole 22a of the push button 22 and the hole 23a of the metal fitting 23 are misaligned as shown in the figure.

The neck portion 21b of the aforementioned hook 21a shown in FIG. 8 can be clamped by either of these two holes 22a, 23a.

FIG. 12 shows a state in which the push button is pressed against a spring (not shown); in this case, the hole 22a of the push button 22 and the hole 23a of the metal fitting 23 are aligned.

In such an open state, the hook 21
A can be taken out and put in freely.

Therefore, when attaching the connecting part 3 to the electrode part 2 or releasing the attached state, press the push button 22 with your finger against the spring as shown in FIG. 12, and adjust the positions of the two holes 22a and 23a. After aligning and opening the electrode part 2, insert the hook 21a and release your finger to release the push button 2.
2 is restored to its original state and has two holes 2 as shown in Figure 11.
By shifting the positions of 2a and 23a, the neck 21b of the hook 21a can be held.

In addition, as another conventional example, there is a biological induction electrode that uses a magnet to connect an electrode part and a connecting part.

[Problem that the invention attempts to solve]

However, conventional biological induction electrodes have the problem of being uneconomical because they use expensive silver and silver chloride in the disposable electrode part. In addition, both the electrode portion and the connecting portion are formed of metal, resulting in problems such as being heavy and making point contact at the connecting portion, which tends to generate noise.

The present invention aims to solve these problems.

[Means for solving problems]

In order to achieve the above object, the present invention provides the following electrode part for a biological induction electrode. In other words, the present invention is
an adhesive base material having a notch formed in the center and whose lower surface is capable of adhering to the skin; and an adhesive base material that is attached to the upper surface of the adhesive base across the notch opening and is smaller than the notch opening of the adhesive base material. a ring-shaped double-sided adhesive tape having a notch; an electrode element made of a sponge and impregnated with conductive jelly, which is attached to the upper surface near the center of the double-sided adhesive tape and is larger than the notch of the double-sided adhesive tape; This is an electrode part for a biological induction electrode, which is made up of a ring of double-sided adhesive foam that is attached to the upper surface of a double-sided adhesive tape concentrically with the electrode and whose inner periphery is larger than the outer periphery of the electrode.

[Effect]

In the above configuration, the electrode element and the adhesive base material of the electrode part are fixed to each other with a ring-shaped double-sided adhesive tape, and the lower surface of the adhesive base material is in close contact with the skin, so that the electrode element is fixed to the skin 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 an electrode section for a biological induction electrode showing an embodiment of the present invention, and numeral 2 in the figure is an electrode section that is adhered to the skin surface of a living body and derives a weak voltage from inside the living body. This electrode part 2 has an adhesive base material 4 made of non-woven fabric, and as shown in FIG. It is made of thin sheets. A double-sided adhesive tape 5 is also placed on the upper surface of this adhesive base material 4, spanning the notch 4a.
a, but is formed smaller than the notch 4a of the adhesive base material 4, and the double-sided adhesive tape 5 is attached so as to be concentric with the notch 4a.

The upper adhesive part 5c near the center of the double-sided adhesive tape 5 is impregnated with conductive jelly (or cream or gel, hereinafter simply referred to as jelly), spanning the notch 5a and concentrically with the notch 5a. An electrode element 6 made of a sponge is attached.

Further, on the upper surface of the double-sided adhesive tape 5, a ring 7 made of double-sided adhesive foam having an inner circumference larger than the outer circumference of the electrode element 6 is arranged concentrically with the electrode element 6 and at a distance l from the electrode element 6. The lower adhesive part 7a is adhesively fixed to the double-sided adhesive tape 5, and the upper adhesive part 7b is arranged in a non-contact manner by setting a space.
is attached to the connecting body 9 of the connecting portion described later during use.

In this way, the electrode part 2 does not use metals such as silver or silver chloride, but uses an electrode made of a sponge impregnated with jelly, so the electrode part 2, which comes into contact with the skin of a living body and is disposable for hygiene reasons, is inexpensive. Not only can it be manufactured, it is also lighter and easier to use.

FIG. 3 is a perspective view showing the external appearance of the connection section 3 attached to the electrode section 2. The cord attachment section 9a of the connection section main body 9 is made flexible by a notch to protect the connection cord 8 from bending. The connecting portion 3 and the electrode portion 2 constitute a biological induction electrode.

FIG. 4 is a cross-sectional view for explaining the internal structure of the connecting portion 3, and the connecting portion main body 9 shown in the figure includes an electrode connecting terminal plate 10 having a concave connecting surface 10a made of silver-plated titanium, A shield cap 11 for electromagnetically shielding the electrode connection terminal plate 10 and an insulating plate 12 for insulating the shield cap 11 and the electrode connection terminal 10 are attached.

The concave connection surface 10a is connected to the electrode element 6 of the electrode section 2.
This makes it possible to increase the contact area with the wire, thereby reducing electrical resistance, stabilizing the electrical connection, and preventing the generation of noise.

In addition, the lead wire 8a is attached to the electrode connection terminal plate 10.
However, the lead wire 8a is attached to the shield cap 11.
A shield wire 8b is attached to electromagnetically shield the
These lead wires 8a and shielded wires 8b are connected to an external electrocardiograph or the like by means of a connection cord 8 which is coated with insulation, and the shielded wires 8b are grounded to further stabilize the shielding effect. I can do it.

To use the biological induction electrode 2 as described above, as shown in FIGS. 4b on the skin surface 1, and when the connection part 2 is applied to the electrode part 2 and pressed from above, the upper adhesive base 7 of the ring 7 made of double-sided adhesive foam
The connecting portion main body 9 is pressure-adhered to b, and the connecting portion 3 becomes integral with the electrode portion 2.

At the same time, the electrode element 6 made of sponge is connected to the concave connection surface 1 of the electrode element connection terminal plate 10 of the connection part 3.
0a causes deformation and distortion, and its lower part contacts the skin surface 1 through the notch 5a of the lower double-sided adhesive tape 5 and the notch 4a of the adhesive base material 4 together with the conductive jelly in the sponge.

Therefore, the electrode element 6 made of sponge can come into surface contact with the concave connection surface 10a of the electrode element connection terminal plate 10 and the skin surface 1, thereby achieving a stable connection with low electrical resistance.

Further, since the electrode element 6 and the ring 7 have a space with a distance l, even if the conductive jelly leaks from the electrode element 6, the adhesiveness of the upper surface of the ring is maintained.

[Effect of idea]

As described above, according to the present invention, since the electrode element is formed from a sponge impregnated with conductive jelly, there is no need to use expensive metals such as silver and silver chloride in the electrode element, and it is suitable for disposable use. Costs can be kept low.

In addition, since the inner circumference of the double-sided adhesive foam ring is larger than the outer circumference of the electrode, there is a space between the conductor and the ring, which prevents the jelly of the electrode from adhering to the top surface of the ring and the connection body. Since the electrode is fixed by adhesive, the connection state due to contact between the electrode and the electrode connecting terminal plate is stable.

[Brief explanation of drawings]

Fig. 1 is a perspective view of an electrode part for a biological induction electrode that is an embodiment of the present invention, Fig. 2 is a sectional view of Fig. 1, Fig. 3 is a perspective view of a connecting part, and Fig. 4 is a 5 and 6 are explanatory diagrams for the use of the electrode section.
Figures 1 to 12 are explanatory diagrams of conventional examples. DESCRIPTION OF SYMBOLS 1... Skin surface of living body, 2... Electrode portion, 4... Adhesive base material, 5... Double-sided adhesive tape, 6... Electrode element,
7...Ring.

Claims (1)

[Scope of utility model registration request] an adhesive base material having a notch formed in the center and whose lower surface can be brought into close contact with the skin; and an adhesive base material that is attached to the upper surface of this adhesive base across the notch opening, and is attached to the upper surface of the adhesive base material so as to extend from the notch opening of the adhesive base material. a ring-shaped double-sided adhesive tape having a small notch; an electrode element made of a sponge impregnated with conductive jelly, which is attached to the upper surface near the center of the double-sided adhesive tape and is larger than the notch of the double-sided adhesive tape; and a ring of double-sided adhesive foam attached to the upper surface of the double-sided adhesive tape concentrically with the electrode and whose inner periphery is larger than the outer periphery of the electrode.