JPH0530408Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a clip-type extremity electrode pad, and particularly to a clip-type extremity electrode pad that prevents the pad from falling off the electrode plate.

[Conventional technology]

(1) Background of the invention Generally, when recording the electrocardiogram of a heart disease patient using an electrocardiograph, limb electrodes are attached to the patient's limbs.
It is well known that cardiac action potentials are derived by placing chest electrodes in close contact with the chest.

Among these, as shown in FIG. 5, clip-shaped limb electrodes are often used as limb electrodes, which are equipped with clamping parts 31 and 32 that hold a wrist or the like 36 from both sides by the pressing action of a leaf spring 33. By securely fixing it to the wrist or the like 36, a more accurate electrocardiogram can be recorded.

However, since the electrode plate 34 attached to the clamping part 31 is made of metal and is hard, it is difficult to make direct contact with the living body's skin surface, and the contact resistance generated between the living body's skin surface and the electrode plate 34 prevents the cardiac action potential from being correctly derived. Moreover, since the electrode plate 34 is used by a large number of patients, there is a risk that pathogenic bacteria etc. may adhere to the electrode plate 34, making it unhygienic.

Therefore, a pad 35 made of hydrous gel having both conductivity and adhesiveness is interposed, and this pad 35
The electrode plate 34 is brought into close contact with the skin surface of a living body such as a wrist.

The present invention relates to the structure of such a clip-type limb electrode pad.

(2) Conventional Example A conventional clip-type limb electrode pad had the structure shown in FIG.

In the figure, reference numerals 1 and 2 are an electrode hydrogel layer and a biological hydrogel layer each having conductivity and adhesiveness, and 3 is an insulating base material sheet formed of a nonwoven fabric or the like.

The mutual relationship of the above-mentioned members is such that the electrode hydrogel layer 1 and the biological hydrogel layer 2 sandwich the base sheet 3, and both hydrogel layers 1 and 2 are connected and exposed to the outside. The base sheet part that was
It is a gripping piece 5 that can be gripped with the fingers of the hand and the entire clip-type limb electrode pad can be attached to and removed from the electrode plate 34 (FIG. 5).

When using this clip-type limb electrode pad, as described above, hold the gripping piece 5 with your fingers to bring the upper surface 11 of the electrode hydrogel layer 1 into close contact with the lower surface 37 of the electrode plate 34. .

Next, the holding parts 31 and 32 are opened against each other against the pressing force of the leaf spring 33 (Fig. 5), and the patient's wrist, etc. 36 is inserted therein, and the holding parts 31 and 32 are closed again by the pressing force of the leaf spring 33. Biological skin surface 38 (Fig. 5)
The lower surface 21 of the biological hydrogel layer 2 is brought into close contact with the lower surface 21 of the biological hydrogel layer 2.

In this way, the action potential of the patient's heart is derived from the electrode plate 34, and the electrocardiogram is recorded with an electrocardiograph (not shown) connected to the electrode plate 34, and the electrocardiogram is displayed on the monitor. ing.

[The problem that the idea aims to solve]

In the prior art described above (FIG. 6), the upper surface 11 of the electrode hydrogel layer 1 and the lower surface 37 of the electrode plate 34 (the fifth
Figure) The adhesion between the lower surface 21 of the biological hydrogel layer 2 and
Since the adhesion force is smaller than that between the electrode plate 34 and the body skin surface 38, even if you try to remove the entire clip-type limb electrode from the wrist 36 while keeping the pad 35 in close contact with the electrode plate 34 after electrocardiogram measurement, the pad 35 will stick to the lower surface of the electrode plate 34. There is a problem that it may fall off from the body surface 37 and remain on the living body's skin surface 38 or fall onto the floor surface.

That is, the conventional clip-type limb electrode pad (FIG. 6) has the following areas:
The area of the lower surface 21 of the biological hydrogel layer 2 that should be in close contact with the biological skin surface 38 of the wrist 36 is the same.

On the other hand, the electrode hydrogel layer 1 and the biological hydrogel layer 2 are both made of the same hydrogel material having conductivity and adhesiveness.

Furthermore, the biological skin surface 38 and the biological hydrogel layer lower surface 2
1 is flexible, whereas the lower surface 37 of the electrode plate
The properties of the opposing contact surfaces on the living body skin surface 38 side and the electrode plate lower surface 37 side are completely opposite, such that the former is flat and rigid while the upper surface 11 of the electrode hydrogel layer is flexible. ing.

Therefore, considering the area where these adhesive forces act, the material of the hydrogel layer, and the properties of the opposing adhesion surface, in terms of adhesion, the lower surface 37 side of the electrode plate is less compatible than the side 38 of the living body's skin. As mentioned in
The adhesion between the electrode plate lower surface 37 and the electrode hydrogel layer upper surface 11 is stronger than that between the biological skin surface 38 and the biological hydrogel layer 2.
It is smaller than the adhesion force between 1.

Therefore, in the conventional example (FIG. 6), when the entire clip-type limb electrode (FIG. 5) is removed from the wrist or the like 36, the problem remains that the pad 35 falls off from the electrode plate 34.

The purpose of the present invention is to prevent the clip-type limb electrode pad from falling off the electrode plate.

[Means to solve the problem]

As shown in FIG. 1, the above-mentioned problem is to solve the following problem: As shown in FIG. The base sheet 300 is protruded, and an adhesive layer 400 is provided on the electrode hydrogel layer 100 side, and a non-adhesive gripping piece 500 is provided on the outside of the adhesive layer. For a clip-type limb electrode, the adhesive layer 400 is bent together with the gripping piece 500 before facing, so that both the electrode hydrogel layer 100 and the adhesive layer 400 can be brought into close contact with the electrode plate 600 of the clip-shaped limb electrode. Solved by Patsud.

[Effect]

As described above, according to the present invention, the adhesive layer 400 is provided on the electrode hydrogel layer 100 side between the electrode hydrogel layer 100 and the biological hydrogel layer 200 of the same size with the insulating base sheet 300 sandwiched therebetween. .

Therefore, the area in close contact with the electrode plate 600 side is
The area of the adhesive layer 400 was larger than the area that was in close contact with the living body's skin, and the adhesion force was also greater.

Therefore, the clip-type limb electrode pad is prevented from falling off the electrode plate.

〔Example〕

Hereinafter, the present invention will be explained by way of examples and with reference to the accompanying drawings.

FIG. 2 is a diagram showing a first embodiment of the present invention.

In the figure, reference numeral 100 is an electrode hydrogel layer, 200 is a biological hydrogel layer, 300 is an insulating base sheet, 400 is an adhesive layer, and 500 is a gripping piece.

The clip-type limb electrode pad according to the present invention shown in the figure is a rectangular flat plate as a whole, and in the center thereof, an electrode hydrogel layer 100 of the same size and an electrode hydrogel layer 100 of the same size with the base sheet 300 sandwiched therebetween. Hydrogel layers 200 are provided facing each other.

Both of the gel layers 100 and 200 are made of acrylic hydrogel or urethane hydrogel, both of which have conductivity and adhesiveness, and which have the advantage of not drying for a long time when applied to a pad.

On the other hand, the base sheet 300 has an insulating property and is made of, for example, a non-woven fabric, which improves the fit to the skin when this clip-type limb electrode pad is brought into close contact with the skin surface of a living body. There is. This base sheet 300 may be formed of other fabrics or knits.

The electrode hydrogel layer 100 and the biological hydrogel layer 200 are bonded to each other through the pores of the base sheet 300 formed of the nonwoven fabric or the like.

A base sheet 300 protrudes from both sides of the hydrogels 100 and 200, and a first adhesive layer 410 and a second adhesive layer are formed on the electrode hydrogel layer 100 side.
An adhesive layer 400 consisting of an adhesive layer 420 is provided.

The adhesive layers 410 and 420 are made of adhesive material such as epoxy gel.

Further, the base sheet 300 is exposed and extends outside the adhesive layers 410 and 420, and the exposed portion is a grip piece 500 consisting of a first grip piece 510 and a second grip piece 520. .

FIG. 3 is a diagram showing a second embodiment of the present invention.

The difference from the first embodiment (Fig. 2) is that the first embodiment is different from the first embodiment (Fig. 2).
A first reinforcing layer 710 and a second reinforcing layer 720 are provided on both sides of the biological hydrogel layer 200, facing the adhesive layer 410 and the first gripping piece 510 and the second adhesive layer 420 and the second gripping piece 520. The point is that

The reinforcing layers 710 and 720 may be made by pasting paper or the like on the lower surface of the base sheet portions on both sides of the biological hydrogel layer 200. The reinforcing layer includes the gripping piece 51
0,520 so that it can be easily grasped with the fingers of the hand, the entire clip-type limb electrode pad can be attached to the electrode plate 60.
0 (FIG. 1), it functions as a reinforcing member so that it can be attached and detached more freely.

Hereinafter, the operation of the present invention will be explained based on FIG. 4.

The electrode plate 600 shown in the figure is a well-known one, and includes a curved plate 610 that is curved to fit the wrist etc. 36 (FIG. 5) and a holding part 31 (the fifth electrode) of one of the clip-type limb electrodes. a vertically upwardly extending mounting plate 620 for mounting across the
630, an electrocardiograph (not shown) is connected to the cylindrical portion 6A of the mounting plate 630, and a display device (not shown) is connected to the terminal bar 6B of the mounting plate 620 via a cord (not shown). It is connected and works with other electrode plates to record and display electrocardiograms.

First, the longitudinal direction LO of such an electrode plate 600 is
In accordance with the above, when the clip-type limb electrode pad (Fig. 2) according to the present invention is fixed and tightly attached (Fig. 4A)
I will explain about it.

Top surface 1 of electrode hydrogel layer 100 for pad protection
Of the transparent films (not shown) attached to the lower surface 201 of the electrode hydrogel layer 200 and the lower surface 201 of the electrode hydrogel layer 200, the film on the upper surface 101 of the electrode hydrogel layer is peeled off in advance.

After doing this, grip the second gripping piece 520 with the thumb and forefinger of your right hand and turn the entire pad inside out.
As shown in FIG. 4A-1, the upper surface 4101 of the first adhesive layer 410 is placed against one end of the upper surface 602 of the curved plate 610, and the portion of the lower surface of the first gripping piece 510 that overlaps with the first adhesive layer 410 While pressing the film with the thumb of the left hand, press the top surface 4101 of the first adhesive layer.
is brought into close contact with the upper surface 602 of the curved plate.

Next, while gripping the second gripping piece 520 again with the thumb and forefinger of the right hand, both hydrous gel layers 10
0,200 and the second adhesive layer 420 (FIG. 4 A-1), the lower surface 2 of the biological hydrogel layer 200
01 is brought into close contact with the lower surface 601 of the curved plate on the upper surface 101 of the electrode hydrogel layer 100 while pressing the film with the thumb of the left hand.

Thereafter, a second adhesive layer 420 is applied to the electrode hydrogel layer 100 side that is in close contact with the lower surface 601 of the curved plate.
While holding the gripping piece 520 with the thumb and forefinger of the right hand, bend it as shown by the arrow.

Finally, as shown in FIG. 4A-2, the upper surface 4201 of the second adhesive layer 420 is attached to the upper surface 60 of the curved plate 610.
2, and while pressing the portion of the lower surface of the second gripping piece 520 that overlaps with the second adhesive layer 420 with the thumb of the right hand through the film, press the upper surface 4201 of the second adhesive layer onto the upper surface of the curved plate. 602 and peel off the film (not shown) attached to the lower surface 201 of the biological hydrogel layer 200.

Next, along the transverse direction LA of the electrode plate 600,
The case where the clip-shaped limb electrode pads of the present invention (FIG. 2) are fixed and brought into close contact (FIG. 4B) will be explained.

As in the case of fixation in the longitudinal direction (FIG. 4A), the gripping pieces 510, 5 are attached to the electrode hydrogel layer 100 side.
20 and the adhesive layers 410 and 420, first, the upper surface 4101 of the first adhesive layer is brought into close contact with the outer surface of one of the mounting plates 630, and the upper surface 101 of the electrode hydrogel layer is brought into close contact with the lower surface 601 of the curved plate. (Figure 4 B-1).

After doing this, the upper surface 4201 of the second adhesive layer 420 is brought into close contact with the outer surface of the other mounting plate 620 (FIG. 4B-2).

In these operations, the film (not shown)
This is the same as in the case of fixation in the longitudinal direction (FIG. 4A).

In both cases of fixing in the longitudinal direction (FIG. 4A) and in the case of fixing in the transverse direction (FIG. 4B), after the pad is tightly attached to the electrode plate 600, the mounting plates 630, 60
Inner protrusions 603, 604 and curved plate 61 provided at 0
0, the electrode plate 600 is attached to one of the clamping parts 31 (FIG. 5) of the clip-type limb electrode, and the patient's electrocardiogram is measured.

[Effect of idea]

As described above, according to the present invention, the adhesive layer 400 is provided on the electrode hydrogel layer 100 side between the electrode hydrogel layer 100 and the biological hydrogel layer 200 of the same size sandwiching the insulating base sheet 300. Technical measures were taken.

Therefore, considering that both hydrogel layers 100 and 200 are made of exactly the same material and have the same size, the area in close contact with the electrode plate 600 side is smaller than that of the biological skin side by the amount of the adhesive layer 400. The area of adhesion was larger, and the adhesion force was also greater.

Therefore, the technical effect of preventing the clip-type limb electrode pad from falling off the electrode plate has been achieved.

Additionally, if the base sheet is made of a nonwoven fabric, the fit to the skin will be improved, and if both hydrogel layers are made of acrylic hydrogel, the life of the pad will be extended.

[Brief explanation of the drawing]

Figure 1 is a diagram showing the principle of the present invention, Figure 2 is a diagram showing the first embodiment of the invention, Figure 3 is a diagram showing the second embodiment of the invention, and Figure 4 is an explanatory diagram of the operation of the invention. , FIG. 5 is a general explanatory diagram of a clip-type limb electrode pad,
FIG. 6 is an explanatory diagram of the prior art. DESCRIPTION OF SYMBOLS 100... Electrode hydrogel layer, 200... Biological hydrogel layer, 300... Base material sheet, 400... Adhesive layer, 500... Gripping piece, 600... Electrode plate.

Claims (1)

[Claims for Utility Model Registration] (1) An electroconductive and adhesive electrode hydrogel layer 100 and a biological hydrogel layer 200 of the same size are bonded to each other with an insulating base sheet 300 sandwiched therebetween. Then, the base sheet 300 is made to protrude, and an adhesive layer 400 is provided on the electrode hydrogel layer 100 side, and a non-adhesive gripping piece 500 is provided on the outside of the adhesive layer. Once gripping piece 50
1. A pad for a clip-type limb electrode, characterized in that the adhesive layer 400 is bent along with the electrode hydrogel layer 100 and the adhesive layer 400 so that both the electrode hydrogel layer 100 and the adhesive layer 400 can be closely attached to the electrode plate 600 of the clip-type limb electrode. (2) The adhesive layer 400 is the electrode hydrogel layer 100
The gripping piece 500 is composed of a first adhesive layer 410 and a second adhesive layer 420 arranged on both sides of the gripping piece 500.
A clip-type limb electrode pad according to claim 1, which is comprised of a first gripping piece 510 and a second gripping piece 520 integrally formed with a base sheet 300. (3) A first reinforcing layer 710 and a second reinforcing layer are provided on both sides of the biological hydrogel layer 200, facing the first adhesive layer 410 and the first gripping piece 510 and the second adhesive layer 420 and the second gripping piece 520. The clip-type extremity electrode pad according to claim 2, which is provided with layers 720, respectively.