JPH032249Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a biological induction electrode pad that is adhered to a biological induction electrode.

[Prior Art] As is well known, bioelectricity generated in a living body is induced by the activities of the heart, brain, muscles, and the like. In particular, cardiac bioelectricity is detected by detecting weak currents induced on the skin of a living body using an external electrocardiograph to diagnose cardiac abnormalities.

This electrocardiograph requires electrodes to be brought into close contact with the surface of the skin in order to electrically connect the input section to the living body.

A conventional electrode that is brought into close contact with the skin surface will be explained with reference to FIG.

In the figure, reference numeral 1 denotes a clip-type electrode that clamps the wrist, ankle, etc. of a human body, and this clip-type electrode 1 has a pair of clamping plates 2 and 2' that can cooperate with each other to clamp an object to be clamped. , the holding plates 2 and 2' are mutually pivotally supported by a pivot shaft 3.

There are gripping portions on the proximal side of the pivot shaft 3, and their distal ends are always brought close to each other by the biasing force of a spring 4 built into the pivot shaft 3.

Further, an electrode plate 5 which is in direct contact with the skin surface is fixed to the inside of the holding plate 2 with a nut.

6 and 6' are terminals to which conductor cords (not shown) are connected.

To use the clip-type electrode 1 having such a configuration, the wrist 7 or ankle 7 must be held between the pair of clamping plates 2 and 2' by the biasing force of the spring 4 built into the pivot shaft 3 of the clip-type electrode 1. It measures the potential difference.

[Problem to be solved by the invention] By the way, in this way, the clip-type electrode 1 is attached to the wrist 7.
Cardiac abnormalities are diagnosed by guiding the weak current generated in the heart to an electrocardiograph by holding it between the wrists and ankles 7. However, for some people, the urging force of the spring 4 causes the holding plates 2 and 2' to strongly press against the wrists 7. There was a problem in that the ankle 7 was pinched, causing pain to the skin surface thereof, and in severe cases, causing skin irritation.

In addition, even if the electrode plate 5 is directly contacted with the skin surface of a living body to measure a weak current, the weak current cannot be accurately measured due to the contact resistance generated on the skin surface of the living body, so it is necessary to apply cream or the like to the skin surface in advance. The contact resistance was weakened, and an electrode plate was placed on top of the cream to measure the weak current.

However, applying the cream each time a weak current is measured in this manner is troublesome and inefficient.

The present invention aims to solve such problems.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides the following biological induction electrode pad. In other words, the present invention is a biological induction electrode that is removably adhered to an electrode plate for detecting the electromotive force formed on the biological induction electrode that is in close contact with the skin surface of a living body and derives a weak current from within the body. This pad has a removable piece for attachment/detachment that protrudes from a knitted flat base sandwiched between conductive and adhesive hydrogel layers on both sides, and the hydrogel layer An inductive electrode pad for biological use, comprising a conductive hydrous polyurethane layer that is releasably adhered to one side of the body and that is in contact with the skin surface of the living body and has a weaker adhesive force than the hydrogel layer. be.

[Example] Hereinafter, how the configuration of the present invention is actually embodied will be explained with reference to the drawings, along with its operation.

FIG. 1 is a partially cutaway perspective view of a biological induction electrode pad according to an embodiment of the present invention, and FIG. 2 is a side view of FIG. The substrate 9 is a flat plate-shaped substrate made of a warp knitted fabric of polyester filament, and both surfaces of the substrate 9 are sandwiched between upper and lower hydrogel layers 10 and 10'.

These hydrogel layers 10, 10' are made of gelatin, agar,
polyacrylamide, 2-acrylamide-2-
It is made from methylpropane sulfonic acid, 2-hydroxyethyl methacrylate, polyion complex, etc., and has electrical conductivity as well as considerable adhesiveness.

The layer 10 on one side of the hydrous gel having conductivity and adhesiveness and the layer 10' on the other side of the hydrous gel having conductivity and adhesiveness form the knitted flat plate base 9.
As a result, the hydrous gel layer 10 on one side and the layer 10' on the other side pass through the stitches of the knitted flat plate-like substrate 9 and come into contact with each other to conduct electricity.

A release paper 11 that protects this hydrogel layer is releasably adhered to the upper surface of this single-sided layer 10, and when used, this release paper 11 is peeled off to form a biological induction electrode pad 8 as shown in FIG. As shown, it is adhered to the electrode plate 5 of the clip-type electrode 1.

The used biological induction electrode pad 8 is attached to the electrode plate 5
It is peeled off and thrown away.

Furthermore, a hydrous polyurethane layer 13 is releasably adhered to the lower surface side of the hydrous gel layer 10' on the lower surface via a release paper 12, and a release paper 14 is adhered to the lower surface of this hydrous polyurethane layer 13. ing.

This hydrous polyurethane layer 13 has conductivity and is brought into direct contact with the skin surface of a living body, and when the hydrogel layer 10 is brought into direct contact with the skin surface of a living body, this hydrogel layer 10 has a strong adhesive force. Since it comes into contact with the skin surface and becomes difficult to peel off, the adhesive force is weakened so that one side contacts the hydrogel layer 10 and the other side contacts the skin surface of the living body.

This hydrous polyurethane layer 13 has almost no adhesive force on one side that is in contact with the release paper 14 so that it can be easily peeled off from the release paper 14.
The other side that is in contact with the skin has some adhesive strength because it is in direct contact with the skin surface, but this adhesive strength is to the extent that it does not adhere to the skin surface.

Therefore, in use, first the release paper 14 is peeled off from the hydrous polyurethane layer 13, then the release paper 12 is peeled together with the hydrous polyurethane layer 13 from the hydrogel layer 10', and the peeled hydrous polyurethane layer 13 is removed. After inverting and adhering one side that was in contact with the release paper 14 to the hydrous gel layer 10', when the release paper 12 is peeled off from the hydrous polyurethane layer 13, the other side that was adhering to the release paper 12 will be removed. be exposed.

The polyurethane layer 13 exposed in this way
The other side is capable of contacting the skin surface.

Further, the hydrous polyurethane layer 13 has a lower impedance than the hydrous gel layers 10 and 10'.

Therefore, if the hydrous polyurethane layer 13 is directly brought into close contact with the skin surface of the living body, it is convenient to derive a weak current from the living body.

Reference numeral 15 denotes a removable piece protruding from one end of the base plate 9, which allows the biological induction electrode pad 8 to be easily attached to and removed from the clip-type electrode 1.

Without this detachable piece 15, when attaching or detaching the pad 8 from the clip-type electrode 1, the hydrogel 10, 10' would have to be held directly between the fingers.
It's inconvenient and lacks a sense of cleanliness.

That is, the water-containing gel 10, 10' sticky to the finger
This causes the trouble of having to remove the attached hydrous gel with a detergent or wiping it with a cloth or the like.

In particular, if the biological induction electrode pad 8 is attached to the electrode plate 5 in the wrong position, when it is peeled off and the position is set correctly again, the adhesive hydrogel will be applied directly to the finger since it will be peeled off with the finger. There are inconveniences such as adhesion and discomfort, as well as time being spent on correction.

However, since the removable piece 15 is provided on the base 9 so as to protrude more than both the hydrous gel layers 10 and 10' sandwiched from both sides, no hydrous gel is attached to the removable piece 15, and the above-mentioned The inconvenience can be resolved.

This removable piece 15 may be formed integrally with the base 9 and made of the same material, if the base 9
It may also be manufactured separately using a different material and later connected to the base plate 9 and provided in a protruding manner.

By using a knitted fabric sheet, a synthetic resin sheet, a rubber sheet, a foamed sheet, a warp knitted fabric, a bonded cloth, etc. for the removable piece 15, a sense of cleanliness and comfort can be achieved.

Furthermore, this release paper 12 can also serve as a reinforcing material.

Next, to explain how to use the biological induction electrode pad 8 configured as above, the hydrous polyurethane layer 13 is inverted as described above, and the one side adhered to the release paper 14 is now the hydrous gel layer 10'. Padded 8 which is glued and integrated with
Hold the removable piece 14 with your fingers, and use your other fingers to press the release paper 14.
After peeling off, as shown in FIG. 3, the hydrous gel layer 10 is adhered to the electrode plate 5 of the clip-type electrode 1, and the entire pad 8 is pressed with a finger.

Finally, the release paper 12 is added to the water-containing polyurethane layer 13.
The other surface of the hydrous polyurethane layer 13 is exposed.

The other side of the exposed water-containing polyurethane layer 13 is brought into contact with the skin surface to lead out a weak current from within the living body to an external electrocardiograph (not shown).

The used pad 8 can be easily peeled off from the clip-type electrode 1 by pinching the detachable piece 15 with fingers.

[Effects of the invention] According to the invention described above, a biological induction electrode pad is attached to the electrode plate of a biological electrode, and the electrode plate is brought into close contact with the skin surface of the biological body through this pad to generate a weak current from the biological body. Since this pad has good conductivity due to the hydrous gel, it is possible to efficiently and accurately detect weak currents in the living body without having to take the trouble of applying cream to the skin surface each time.

In addition, since the electrode plate and the skin surface are in close contact through the induction electrode pad, the electrode plate does not leave traces of the electrode plate on the skin surface due to the cushioning effect of the pad. There is no risk of irritation to the skin of people with sensitive skin.

Furthermore, since a removable piece is provided, the biological induction electrode pad can be easily attached to and removed from the electrode plate by holding the removable piece with one's fingers, improving work efficiency.

Furthermore, since the induction electrode pad can be operated by grasping the protruding removable piece, there is no need to directly touch the hydrogel layer with fingers, and cleanliness can be maintained.

In addition, since a water-containing polyurethane layer is provided and this water-containing polyurethane layer is brought into direct contact with the skin surface, there are effects such as ease of peeling off the induction electrode pad from the skin surface.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway perspective view of a biological induction electrode pad according to an embodiment of the present invention, FIG. 2 is a side view of FIG. 1, and FIG. 3 is an explanatory diagram of how to use the biological induction electrode pad. FIG. 4 is a side view of a conventional clip-type electrode. 8... Biological induction electrode pad, 9... Base, 1
0, 10'... Hydrogel layer, 11, 12, 14...
... Release paper, 13 ... Water-containing polyurethane layer, 15
...Removable piece.

Claims (1)

[Claims for Utility Model Registration] (1) Peelably adhered to an electrode plate for detecting electromotive force formed on a biological induction electrode that is in close contact with the skin surface of a living body and derives a weak current from within the living body. This pad has a detachable piece for attaching and detaching the pad, which is protruded from a knitted flat base whose both sides are sandwiched between conductive and adhesive hydrogel layers. It is also characterized by comprising a hydrous polyurethane layer that is releasably adhered to one side of the hydrogel layer and has electrical conductivity and is capable of contacting the skin surface of a living body and has weaker adhesive force than the hydrogel layer. Biological induction electrode pad. (2) The biological induction electrode pad according to claim 1, wherein the removable piece is composed of a knitted fabric sheet. (3) The biological induction electrode pad according to claim 1, wherein the removable piece is made of a synthetic resin sheet. (4) The biological induction electrode pad according to claim 1, wherein the removable piece is made of a rubber sheet. (5) The biological induction electrode pad according to claim 1, wherein the removable piece is made of a foam sheet. (6) The biological induction electrode pad according to claim 1, wherein the removable piece is made of warp knitted fabric. (7) The biological induction electrode pad according to claim 1, wherein the removable piece is composed of a bonded fabric. (8) The biological induction electrode pad according to claim 1, wherein the removable piece is made of synthetic fiber.