JPH0330083Y2 - - 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
The explanation will be given with reference to FIGS. 7 and 7. Reference numeral 1 in the figures is 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.

A reinforcing material 4 made of vinyl chloride in a disc shape smaller than the diameter of the adhesive base material 2 is bonded to the upper surface side (front side) of the adhesive base material 2, and the center portion of the adhesive base material 2 is The opening 3 formed in the opening 3 is closed.

A metal lead wire connection hook 5 is provided through the center of the reinforcing member 4. This lead wire connection hook 5 has a lead wire coupling portion 5a protruding from the upper surface side.
On the bottom side, there is a flat Ag- as shown in Figure 7.
An electrode plate 6 made of Agcl is connected. The lead wire connection body 7 to which the lead wire 8 is connected is connected to this protruding lead wire joint portion 5a, and the lead wire 8
The other end is connected to an electrocardiograph (not shown).

As shown in FIG. 7, reference numeral 9 denotes an electrode plate cover adhered to the electrode plate 6, 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 7 is brought into close contact with the skin surface, the weak voltage induced on the skin surface is guided to the electrode plate 6.

This electrode plate cover 9 prevents accurate measurement of weak voltages due to the contact resistance of the skin surface if the electrode plate 6 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. The electrode plate 6 was placed on top of the cream to measure a weak voltage, but it is troublesome and inefficient to apply cream every time a weak voltage is measured in this way, so the electrode plate 6 is coated with cream. A hydrogel layer that acts as a moisturizer is attached to the skin, eliminating the inconvenience of applying cream each time. As the electrode plate cover 9, a polyurethane foam layer impregnated with jelly may be used instead of the hydrogel layer.

By the way, as shown in FIGS. 6 and 7, the adhesive base material 2 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 2 made of this closed foam butadiene rubber sheet has excellent cushioning properties and a light and soft texture, so it is convenient for bringing the biological induction electrode 1 into close contact with the skin surface M of the living body. It is something.

The lead wire connection body 7 is made of metal, and as shown in FIG. 8, a fitting groove 7a is formed in the center thereof to connect with the lead wire coupling portion 5a of the lead wire connection hook 5 of the bioinduction electrode 1. There is.

[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 5a protruding from the lead wire connection hook 5 of the biological induction electrode 1, the lead wire connection body 7 is connected. is also connected to the biological induction electrode 1, and the weak voltage derived from the electrode plate 6 is connected to an electrocardiograph (not shown) via the lead wire 8.
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 There was a problem in that water entered the electrode plate 6 and an accurate electrocardiogram could not be obtained, so the patient's bathing was 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]

Therefore, this invention was devised by focusing on the above-mentioned problems, and includes an 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, and this adhesive base material. an annular reinforcing member joined to the surface side of the reinforcing member to close the opening; a lead wire connecting hook located in the center of the annular reinforcing member for connecting the lead wire connector; an electrode plate located and fixed to the lower part of the lead wire hook; and an adhesive and waterproof electrode plate that surrounds the lead wire connection hook and is bonded to the reinforcing material to waterproof the lead wire connection hook. an upper elastic waterproof ring having adhesive properties and a lower part having adhesive and waterproof properties surrounding the electrode plate and bonded to the side of the adhesive base material that is in direct contact with the skin surface in order to waterproof the electrode plate; The present invention is characterized in that it solves the above-mentioned problems by providing a biological induction waterproof electrode equipped with an elastic waterproof ring.

[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. This prevents water from entering the biological induction waterproof electrode, allowing accurate electrocardiograms to 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.

A disk-shaped reinforcing material 13 made of vinyl chloride smaller than the diameter of the adhesive base material 11 is bonded to the upper surface side (front side) of the adhesive base material 11, and The opening 12 formed in the opening 12 is closed.

As shown in FIG. 3, a lead wire connection hook 14 made of metal is provided through the center of the reinforcing member 13. As shown in FIG. As shown in FIG. 4, the lead wire connection hook 14 has a lead wire coupling portion 14a protruding from the upper surface side, and a flat electrode plate 15 made of Ag-Agcl on the lower surface side, as shown in FIG. is connected.
That is, the lead wire connection hook 14 is also connected to the electrode plate 1.
5 are both located at the center of the annular reinforcing member 13. A lead wire connecting body 7 (the structure is the same as the conventional example) to which the lead wire 8 is connected is connected to this protruding lead wire joint portion 14a, as shown in FIG. 5, and the other end of the lead wire 8 is is connected to an electrocardiograph (not shown). As shown in FIG. 2, 16 is an electrode plate cover adhered to the electrode plate 15, and is a hydrogel layer. This hydrogel layer is made of gelatin, agar, polyacrylamide, etc., and has a considerable amount of adhesive It has properties as well as conductivity.

When this electrode plate cover 16 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 15.
It leads to If the electrode plate cover 16 is placed in direct contact with the skin surface, it will not be possible to accurately measure weak voltage due to contact resistance on 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 15 on the cream, but it is troublesome and inefficient to apply the cream every time such a weak voltage is measured, so the function of the cream is not applied to the electrode plate 15. This method eliminates the inconvenience of applying cream each time by adhering a hydrogel layer. As the electrode plate cover 16, 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 foamed butadiene rubber sheet has excellent cushioning properties and a light and soft texture.
This is convenient for bringing the living body induction waterproof electrode 10 into close contact with the skin surface of the living body.

``As shown in FIGS. 1, 2, 3, and 4, an upper elastic waterproof ring 1 is provided on the side (surface side) of the reinforcing member 13 to which the lead wire connector 7 is connected.
7' are joined. This upper elastic waterproof ring 17' is made of a doughnut-shaped impregnated closed foam sheet that is adhesive as a whole and has a notch 17'a formed in its center, and its back surface 17'b is shown in FIG. At the same time as being connected to the reinforcing member 13, the notch 19'a covers the lead wire coupling portion 14a of the lead wire connection hook 14.

That is, the upper elastic waterproof ring 17' surrounds the lead connection hook 14.

In addition, the surface 17'c of the upper elastic waterproof ring 17' has such adhesiveness that it can be removably adhered when an external force such as a finger is applied to the lead wire connector 7, as shown in FIG. There is.

When the lead wire connector 7 is connected to the biological induction waterproof electrode 10 as shown in FIG. 4, the lead wire connector 7 is connected to the upper elastic waterproof ring 1.
Since the surface 17'c of the lead wire connector 7' is adhered to the upper elastic waterproof ring 17' while pressing, the gap s mentioned 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 15 from the inside.

A lower elastic waterproof ring 17'' is bonded to the side (back side) of the adhesive base material 11 that is in direct contact with the skin surface. It is a doughnut-shaped impregnated closed cell foam sheet which is adhesive as a whole and has a notch 17''a formed in the center thereof, and its surface 17''b is bonded to the back surface of the adhesive base material 10, and the back surface 17''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 substance that is adhered to the skin.

Further, the lower elastic waterproof ring 17'' surrounds the electrode plate 15.

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 17'' is also elastically brought into close 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 15, but the water will not be waterproof. The presence of the side elastic waterproof ring 17'' blocks water here, preventing water from entering the electrode plate 15 and protecting the electrode plate 15.

Note that the lower elastic waterproof ring 17'' itself is not very thick, and has elasticity as described above, so if the lower elastic waterproof ring 17'' 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. Furthermore, even if a slight step is formed, water can be prevented from entering the electrode plate 15 due to the presence of the lower elastic waterproof ring 17'' 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 17c of the lower elastic water-containing waterproof ring 17'' is brought into close contact with the skin surface M of the living body, and the biological induction waterproof electrode 10 is brought into close contact with the skin surface of the living body.

The fitting groove 7a of the lead wire connection body 7 is fitted into the lead wire coupling portion 14a 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 electrode 10. Along with this connection of the lead wire connector 7, the lead wire connector 7 is bonded to the upper elastic waterproof ring 17' while pressing the surface 17'c of the upper elastic waterproof ring 17' of the biological induction waterproof electrode 10, so that the lead wire connector 7 is bonded to the upper elastic waterproof ring 17'. The gap s between the line connector 7 and the biological induction waterproof electrode 10
This will no longer occur, and water will not infiltrate into the electrode plate 15 from there. Therefore, accurate electrocardiograms can be obtained even when taking a bath. Also lower elastic waterproof ring 1
7" is sticky, so its back side 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, the lower elastic waterproof ring 17 remains in close contact with the skin surface M, so that the induction waterproofing for living organisms is achieved. The electrode will not fall off the skin surface M. Furthermore, the surface 1 of the upper elastic waterproof ring 17'
Since 7'c is adhesive, the lead wire connection body 7 adheres to the surface 17'c of the upper elastic waterproof ring 17'.
The lead wire connector 7 does not fall off from the biological induction waterproof electrode 10 during the test.

[Effect of idea]

As described above, according to the present invention, the lead wire connection hook is surrounded on the annular reinforcing material to bond the adhesive upper elastic waterproof ring, and the electrode plate is surrounded on the side of the adhesive base material that is in direct contact with the skin surface. Since the adhesive lower elastic waterproof ring is bonded to the adhesive, water will not enter through the connection between the biological induction waterproof electrode and the lead wire connection body, and the adhesive attached to the skin of the biological body will not leak. Even if the adhesive base material peels off from its tip due to the influence of water, the lower elastic waterproof ring prevents water from entering and reaching the electrode plate, allowing you to bathe with peace of mind while recording an ECG and ensure accurate ECG recording. It will be done.

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... Reinforcement material, 14... Lead wire connection hook, 15... Electrode plate, 17... Elastic waterproof ring.

Claims (1)

[Scope of utility model registration request] An 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; an annular reinforcing material that is bonded to the surface side of the adhesive base material and closes the opening; a lead wire connection hook located in the center of the reinforcing material for connecting the lead wire connection body; an electrode plate located in the center of the reinforcing material and fixedly provided below the lead wire hook; an upper elastic waterproof ring with adhesive and waterproof properties surrounding the lead wire connection hook and bonded on the reinforcing material to waterproof the wire connection hook; and an electrode plate to waterproof the electrode plate. An inductive waterproof electrode for biological use, comprising an adhesive and waterproof lower elastic waterproof ring that surrounds and is bonded to the side of the adhesive base material that is in direct contact with the skin surface.