JPH0330084Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a living body induction waterproof electrode used to derive weak voltage from a living body, and in particular to a living body induction waterproof electrode that can record electrocardiograms even while bathing. It is related to electrodes.

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

This conventional electrode, which is closely attached to the surface of the skin, is
7, reference numeral 1 indicates a hook-type bioinduction electrode.

This biological induction electrode 1 has an adhesive base material 2, which has a substantially disc shape and is made of foamed polyethylene resin, closed foam butadiene rubber nonwoven fabric, and knitted fabric. As shown in FIG. 8, this adhesive base material 2 has an adhesive back surface 2a, as shown in FIG. The central portion thereof is cut out to form an opening 3.

On the upper surface side (surface side) of this adhesive base material 2, a sixth
As shown in the figure, a lead connection hook 4 is joined and closes the opening 3. This lead wire connection hook 4 has a lead wire coupling part 4a protruding from the top side, and a flat part 4a from the bottom side as shown in FIG.
An electrode plate 6 made of Ag-Agcl is connected. As shown in FIG. 8, a lead wire connector 7 to which a lead wire 6 is connected is connected to the protruding lead wire coupling portion 4a, and the other end of the lead wire 6 is connected to an electrocardiograph (not shown). It is connected to the.

As shown in FIG. 7, 8 is an electrode plate cover adhered to the electrode plate 5, which is a hydrogel layer. This hydrogel layer is made of gelatin, agar, polyacrylamide, etc., and has considerable adhesive properties. It has properties as well as conductivity.

When this electrode plate cover 8 is brought into close contact with the skin surface, a weak voltage induced on the skin surface is guided to the electrode plate 5. This electrode plate cover 8 prevents accurate measurement of weak voltages due to the contact resistance of the skin surface if the electrode plate 5 is brought into direct contact with the skin surface. The weak voltage was measured by applying a cream or the like, but since it is troublesome and inefficient to apply cream every time a weak voltage is measured, a water-containing gel that acts as a cream is applied to the electrode plate 5. The layers are glued together to eliminate the inconvenience of applying cream each time. As the electrode plate cover 8, a polyurethane foam layer impregnated with jelly may be used instead of the hydrogel layer.

By the way, the lead wire connection body 7 is made of metal, and as shown in FIG.
A fitting groove 7a is formed to connect with the groove 7a.

[Problem that the invention attempts to solve]

To record an electrocardiogram using the biological induction electrode 1 configured as described above, first, as shown in FIG. Then, by fitting the fitting groove 7a of the lead wire connection body 7 into the lead wire coupling portion 4a protruding from the lead wire connection hook 4 of the biological induction electrode 1, the lead wire connection body 7 is connected to the biological induction electrode 1, and the weak voltage derived from the electrode plate 5 is connected to an electrocardiograph (not shown) via the lead wire 6.
to be recorded. By the way, an electrocardiogram can be obtained in this way, but depending on the condition of the patient, there may be times when it is desired to record the electrocardiogram for a long time, and if the recording is for a long time, the patient may want to take a bath.

However, as shown in FIG. 8, when taking a bath with the lead wire connector 7 fitted onto the biological induction electrode 1, water enters through the gap s between the lead wire connector 7 and the biological induction electrode 1, and this Water enters the electrode plate 5, making it impossible to obtain an accurate electrocardiogram, which poses a problem in that the patient's bathing is restricted.

Furthermore, depending on the patient's medical condition, it may be desirable to obtain an electrocardiogram in a bathing state, but this is also not possible for the reasons mentioned above.

[Means for solving problems]

This invention was devised by focusing on the above-mentioned problems, and consists of an annular adhesive base material that is in close contact with the skin surface of a living body and has an opening cut out in the center; a lead wire connecting hook bonded to the surface side of the adhesive base material for closing the opening and connecting the lead wire connecting body; an electrode plate fixedly provided below the lead wire connecting hook; and the adhesive. an upper elastic waterproofing ring having adhesiveness and waterproofing properties, which is bonded to the surface side of the base material to which the lead wire connection body is connected, surrounding the lead wire connection hook in order to waterproof the lead wire connection hook; A lower elastic waterproofing ring having adhesiveness and waterproofing properties is provided on the side of the adhesive base material that is in direct contact with the skin surface and is bonded to surround the electrode plate in order to waterproof the electrode plate.
It is an object of the present invention to solve the above-mentioned problems by providing a means called an inductive waterproof electrode for biological use.

[Effect]

In the above configuration, the adhesive base material of the inductive waterproof electrode for living body is brought into close contact with the skin surface of the living body, and at the same time, the adhesive elastic waterproof ring is brought into close contact with the skin surface of the living body. Make it stick to the surface.

The lead wire connector is fitted and coupled to the living body induction waterproof electrode that is in close contact with the skin surface of the living body. When the lead wire connector is fitted, the lead wire connector adheres to the elastic waterproof ring while pressing the elastic waterproof ring, so there is no gap between the lead wire connector and the biological induction waterproof electrode. Water will not enter the biological induction waterproof electrode through the gap, so accurate electrocardiograms can be obtained even when taking a bath.

〔Example〕

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

FIG. 1 is a perspective view of the front side of an inductive waterproof electrode for biological use according to an embodiment of the present invention, and FIG. 2 is a perspective view of the back side of the inductive waterproof electrode for biological use of FIG. This is an inductive waterproof electrode for biological use.

This biological induction waterproof electrode 10 has an adhesive base material 11
The adhesive base material 11 is a doughnut-shaped base material with an opening 12 formed by cutting out the center, and as shown in FIGS. It is made of polyethylene resin, closed foam butadiene rubber sheet, nonwoven fabric, and knitted fabric.
As shown in FIG. 2, this adhesive base material 11 is made to have adhesive properties on its back surface 11a.

As shown in FIG. 3, a metal lead wire connection hook 13 is bonded to approximately the center of the upper surface side (surface side) of this adhesive base material 11 to close the opening 12. This lead wire connection hook 13 has a lead wire coupling portion 13a protruding from its upper surface, and a flat electrode plate 14 made of Ag-Agcl is connected to its lower surface.

This protruding lead wire coupling portion 13a has a fifth
As shown in the figure, a lead wire connector 7 (the structure is the same as the conventional example) to which the lead wire 6 is connected is connected, and the other end of the lead wire 6 is connected to an electrocardiograph (not shown). There is.

15 is the electrode plate 14 as shown in FIG.
The electrode plate cover is a hydrogel layer, which is made of gelatin, agar, polyacrylamide, etc., and has considerable adhesiveness and conductivity.

When this electrode plate cover 15 is brought into close contact with the skin surface of a living body, the weak voltage induced on the skin surface is transferred to the electrode plate 14.
It leads to When the electrode plate cover 15 is used, it is impossible to accurately measure weak voltages due to the contact resistance of the skin surface when the electrode plate 14 is brought into direct contact with the skin surface. Therefore, apply cream or the like to the skin surface in advance to weaken the contact resistance. A weak voltage was measured by touching the electrode plate 14 on the cream, but it is troublesome and inefficient to apply the cream every time such a weak voltage is measured, so the effect of the cream on the electrode plate 14 is This method eliminates the inconvenience of applying cream each time by adhering a hydrogel layer. As the electrode plate cover 15, a polyurethane foam layer impregnated with jelly may be used instead of the hydrogel layer.

Further, as shown in FIGS. 1 and 2, the adhesive base material 11 has a disk shape and is manufactured from a foamed polyethylene resin, a closed foamed butadiene rubber sheet, a nonwoven fabric, and a knitted fabric. The adhesive base material 11 made of this closed-cell foam butadiene rubber sheet has excellent cushioning properties and a light and soft texture, so it is convenient for bringing the biological induction waterproof electrode 10 into close contact with the skin surface of the living body. It is something.

Further, on the side (surface side) of the adhesion base material 11 to which the lead wire connector 7 is connected, there are shown figures 1, 2, and 3.
As shown in FIGS. 4 and 5, an upper elastic waterproof ring 16' is joined. The upper elastic waterproof ring 16' is made of a butadiene rubber sheet that is adhesive and waterproof as a whole, and is made of a donut-shaped impregnated closed foam sheet with a notch 16'a formed in the center. 'b is bonded to the adhesive base material 11 as shown in FIG. 3, and at the same time, the notch 16'a surrounds the lead wire connection hook 13 for waterproofing.

Further, the opening 16'c of the upper elastic waterproof ring 16' has adhesiveness to the extent that it can be removably adhered when an external force such as a finger is applied to the lead wire connecting body 7.

When the lead wire connector 7 is connected to the biological induction waterproof electrode 10 as shown in FIG. 5, the lead wire connector 7 is connected to the upper elastic waterproof ring 1.
Since the surface 16'c of the lead wire connector 6' is adhered to the upper elastic waterproof ring 16' while pressing, the gap s described in the conventional example between the lead wire connector 7 and the biological induction waterproof electrode 10 does not occur. As a result, the gap s
Water does not enter the electrode plate 14 from the inside.

A lower elastic waterproof ring 16'' is bonded to the side (back side) of the adhesive base material 11 that is in direct contact with the skin surface.
As shown in the figure, it is a donut-shaped impregnated closed foam sheet that is adhesive and waterproof as a whole and has a notch 16''a formed in its center, and its surface 16''b is attached to the adhesive base. It is joined to the back side of 11,
In addition, the back surface 16''c is directly adhered to the skin surface of the living body, and its adhesiveness is such that it can be detached if an external force (for example, a finger, etc.) is applied to the object that is in close contact with the skin.

Further, a lower elastic waterproof ring 16'' surrounds the electrode plate 14 to waterproof the electrode plate 14.

When the adhesive base material 11 is brought into direct contact with the skin surface M of the living body as shown in FIG. 5, the lower elastic waterproof ring 16'' is also brought into elastic contact with the skin surface M of the living body at the same time. Lead wire connection body 7
If you take a bath while connected to the biological induction waterproof electrode 10, the adhesive base material 11, which is not waterproof, will peel off from its tip due to the influence of water, and the water will enter the electrode plate 14, but the water will not be waterproof. The presence of the side elastic waterproof ring 16'' blocks water here, preventing water from entering the electrode plate 14 and protecting the electrode plate 14.

Note that the lower elastic waterproof ring 16'' itself is not very thick, and is elastic as described above, so if the lower elastic waterproof ring 16'' is directly attached to the skin surface of a living body, it will slightly lateralize. Since it expands in the direction, there is no risk of creating a step. Further, even if some level difference is formed, the presence of the lower elastic waterproof ring 16'' can prevent water from entering the electrode plate 14, as described above.

Next, to explain how to use the inductive waterproof electrode 10 for biological use having the above configuration, first, as shown in FIG. At the same time, the back surface 16''c of the lower elastic waterproof ring 16'' is brought into close contact with the skin surface M of the living body, and the induction waterproof electrode 10 for living body is brought into close contact with the skin surface M of the living body.

The fitting groove 7a of the lead wire connection body 7 is fitted into the lead wire coupling portion 13a of the biological induction waterproof electrode 10 that is in close contact with the skin surface M of the living body, and the lead wire connection body 7 is guided for living body use. It is connected to the waterproof electrode 10.
This lead wire connection body 7 is bonded to the upper elastic waterproof ring 16' while pressing the surface 16'c of the upper elastic waterproof ring of the biological induction waterproof electrode 10, so that the lead wire connection body 7 and the biological induction waterproof electrode are bonded to each other. The gap s between the electrode plate 10 and the electrode plate 10 is no longer formed, and water does not enter the electrode plate 14 from there. Therefore, accurate electrocardiograms can be obtained even when taking a bath.

In addition, since the lower elastic waterproof ring 16'' is adhesive, its back surface 16''c is in direct contact with the skin surface M, and even if the adhesive base material 11 is peeled off from the skin surface M of the living body due to water. Since the lower elastic waterproof ring 16'' is in close contact with the skin surface M, the biological induction waterproof electrode 10 will not fall off from the skin surface M.Furthermore, the surface 16'c of the upper elastic waterproof ring 16' is adhesive. Therefore, the lead wire connection body 7 adheres to the surface 16'c of the upper elastic waterproof ring 16', and the lead wire connection body 7
will not fall off from the living body induction waterproof electrode 10 during the test.

[Effect of idea]

``According to the present invention, an upper elastic waterproof ring having adhesiveness and waterproofness is bonded to the surface side of the adhesive base material to which the lead wire connection body is connected, surrounding the lead wire connection hook, and A lower elastic waterproof ring with adhesive properties and waterproof properties is also attached to the side of the adhesive base material that is in direct contact with the skin, surrounding the electrode plate, so that it can be easily removed from the connecting part of the biological induction waterproof electrode lead wire connector. Water does not infiltrate, and even if the adhesive base material attached to the skin of the living body peels off from its tip due to the influence of water, the lower elastic waterproof ring prevents water from entering the electrode plate. Since it does not reach the electrocardiogram, you can safely take a bath even while recording the electrocardiogram, and accurate electrocardiogram recording can be obtained.

Moreover, by simply joining an adhesive elastic waterproof ring to a conventionally available commercially available magnetic type biological induction electrode, an inexpensive and effective biological induction waterproof electrode can be obtained.

[Brief explanation of drawings]

Fig. 1 is a perspective view of an inductive waterproof electrode for biological use which is an embodiment of the present invention, Fig. 2 is a rear view of Fig. 1, and Fig. 3
The figure is a sectional view of the biological induction waterproof electrode, Figure 4 is an exploded perspective view of the biological induction waterproof electrode, Figure 5 is an explanatory diagram of the use of the biological induction waterproof electrode, Figures 6, 7, and 8.
The figure is an explanatory diagram of a conventional biological induction electrode. DESCRIPTION OF SYMBOLS 10... Biological induction waterproof electrode, 11... Adhesive base material, 13... Lead wire connection hook, 14... Electrode plate, 16... Elastic waterproof ring.

Claims (1)

[Scope of utility model registration request] An annular adhesive base material that is in close contact with the skin surface of a living body and has an opening with a cutout in the center thereof, and a lead wire connector that is joined to the surface side of the annular adhesive base material to close the opening and to close the opening. a lead wire connection hook for connecting the lead wire connection hook, an electrode plate fixed to the bottom of the lead wire connection hook, and the lead wire connection hook on the surface side of the adhesive base material to which the lead wire connection body is connected. an upper elastic waterproofing ring having adhesiveness and waterproofing properties that surrounds and is bonded to the lead wire connection hook for waterproofing; and a waterproofing for the electrode plate on the side of the adhesive base material that is in direct contact with the skin surface; and a lower elastic waterproof ring having adhesive and waterproof properties surrounding and bonding the electrode plate,
Inductive waterproof electrode for biological use.