JPH024320A - Organism induction electrode for four limbs - Google Patents

Abstract

PURPOSE:To eliminate the instability of mounting and to prevent a trouble from being generated with polarizing operation in a plating part or the cold feeling shock of a patient by obtaining a tape, which abuts and holds an electrode plate to the skin surfaces of four limbs, and constituting the electrode plate with obtaining plastic as a main material and executing conductive plating on the surface. CONSTITUTION:A tape fitting part 6 is provided to an electrode plate 1 on the surface in the opposite side of an abutting surface 1a and the almost central part of an adhesive tape 7 in a length-wise direction is fit to this tape fitting part 6 by adhesion. For this adhesive tape 7, when the tape is fit, the side edge of the tape is abutted to a side edge engaging part 2 and after that, the tape is adhered to the tape fitting part 6. Thus, the adhesive tape 7 can be fit to the electrode plate 1. For the electrode plate 1, a main material A is unitedly formed by the electric insulative plastic with including the side edge engaging part 2 and a hook 3. Then, to the surface of the main material A, plating B is totally executed with the metal of satisfactory conductivity. Thus, since the different type of metal does not exist for the electrode plate 1, the polarizing operation is not generated.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a biological induction electrode for limbs, and more specifically, it is held in contact with the skin surface of a living limb to derive electrical signals inside the living body, thereby detecting external signals. The present invention relates to bioinductive electrodes for limbs that are connected to measuring instruments such as electrocardiographs to back up doctors' diagnoses.

[Conventional technology]

Generally, bioelectricity generated within a living body is induced by the activity of the heart, brain, muscles, etc.

Conventionally, this bioelectricity induced from the heart is generated by holding the limbs of a living body, such as arms and legs, using clip-type multiple limb bioinduction electrodes. The electrical signals of the living body that are led out through the plate are expressed as waveforms by an electrocardiograph connected to the electrodes with lead wires, and the living body's functions are diagnosed by a doctor.

In addition, the electrode plate of this bioinduction electrode for limbs is made of an alloy metal such as nickel silver, which is made of copper, which is a good electrical conductor, and nickel, which stabilizes electrical characteristics.

[Problem to be solved by the invention]

However, in order to bring this electrode plate into contact with the living body's skin surface and efficiently derive the biological voltage within the living body, it is necessary to reduce the electrical resistance of the skin, and for this purpose, an electrolyte cream is applied to the skin surface. There was a need.

Furthermore, in order to make the electrolyte cream and the electrodes blend together, it was considered desirable to plate the surface of the electrode plate with silver chloride.

However, such electrode plates are composed of two types of metals: a metal base material and a dissimilar metal plating, and it has been extremely difficult to prevent the formation of small pinholes with the plating.

When the electrolytic solution, which is a cream applied to the skin surface, penetrates into this pinhole, since the metal base material and the plated metal are different metals, a small battery is partially formed through the electrolytic solution. This causes a so-called polarization effect.

Then, the polarization voltage due to the polarization effect is superimposed on the biological voltage.

Therefore, a much larger polarization voltage is superimposed on the derived signal waveform of a weak biological voltage of about 1 millivolt, making it impossible to measure with an electrocardiograph.

In addition, the base material of the electrode plate is metal, so it is heavy, and when measuring for a long time, the contact surface of the attached limb may shift and rotate downward, causing instability in attachment, which has a negative effect on accurate measurement. There was a problem.

Furthermore, since the electrode plates are made of metal and are good conductors of heat, when the electrodes are attached to the extremities of a living body when the environmental temperature is low, the temperature difference causes the patient's body temperature to be rapidly drawn away from the skin surface. There were issues such as cold shocks disrupting the resting-state morphoelectricity necessary for measurements, which adversely affected electrocardiograph measurements.

In addition, the electrode plates are difficult to process because their base material is metal.

The present invention aims to solve such problems.

[Means to solve the problem]

In order to achieve the above object, the present invention provides the following biological induction electrode for limbs.

That is, the present invention provides an electrode plate that comes into contact with the skin surface of a living body and guides a weak voltage generated within the living body to the outside of the living body, and an electrode plate that is attached to the electrode plate and attached to the extremities of the living body and attached to the limbs of the living body to remove the skin of the limbs. This is a biological induction electrode for extremities, comprising an adhesive tape for holding the electrode plate in contact with a surface thereof, and the electrode plate is made of plastic as a base material, and the surface thereof is coated with conductive plating.

[For production]

In the above configuration, the adhesive tape brings the electrode plate into contact with the skin surface of the living body's extremities by the attached adhesive, and maintains the contact state.

Further, the electrode plate is brought into contact with the skin of the living body's extremities through the adhesive tape, and the weak voltage within the living body is led out from the contact surface.

Furthermore, since the electrode plate is made of insulating plastic as a base material and its surface is plated, there are no dissimilar metals and no polarization occurs.

Furthermore, since the electrode plate is made of plastic with low thermal conductivity, it is difficult to absorb body heat.

〔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, along with its operation.

FIG. 1 is a perspective view of an embodiment of the present invention. In the figure, 1 is an electrode plate, and the lower surface of this electrode plate 1 is a contact surface 1a against the living limb skin surface M.

Further, a side edge engaging portion 2 is integrally extended at one end of the electrode plate 1 at a high height, and a hook 3 is provided on the extended side edge engaging portion 2.

Further, the extending side edge engaging portion 2 is provided with a notch 4 in the longitudinal direction, and a concave terminal holding portion 5 is provided within the notch 4.

Here, the reason why the side edge retaining part 2 is extended higher is that the cream (not shown) applied between the contact surface 1a of the electrode plate 1 and the skin surface M is used to hold the hook 3 and the terminal. This is to avoid getting into part 5.

Further, the electrode plate 1 is provided with a tape attachment part 6 on the opposite side to the contact surface 1a, and the tape attachment part 6 is attached to the approximately central part in the longitudinal direction of the adhesive tape by adhesive. It is installed.

This adhesive tape 6 is positioned by bringing its side edge into contact with the side edge engaging portion 2 during the installation, and the adhesive tape 7 is attached to the electrode plate 1 by adhering to the portion 6. This electrode plate 1 and adhesive tape 7 constitute a living body induction electrode for limbs.

This bioinduction electrode for limbs has the tape attachment section 6.
By attaching both longitudinal sides of the adhesive tape 7 attached to the limb skin surface M, the electrode plate 1
It is possible to bring the body into contact with the same skin surface M and maintain the contact state to derive the biological voltage from inside the body to the outside.

The hook 3 includes a head 3a at the tip, a constricted neck 3b below the head 3a, and an inclined shoulder 3C below the neck 3b.

This structure allows the eight lead wires to be easily held by the lead wire fixing fittings 8a, and increases the contact surface to reduce connection resistance. It is something.

Further, the recessed terminal holding portion 5 securely electrically connects the lead wire 8 and the electrode plate 1 by sandwiching and holding the terminal 8b of the eight lead wires.

Here, the reason why the two connection means between the terminal holding part 5 and the hook 3 are provided is to facilitate parallel connection of monitor equipment such as the display 12 in addition to the electrocardiograph 11 described later. It is something.

The most significant feature of this electrode plate 1 is that its base material A, including the side edge engaging portions 2 and hooks 3, is integrally formed of electrically insulating plastic, and the surface of the integrally formed base material A is The ladle is made of a metal with good conductivity and stable electrical properties, such as silver silver chloride, and is plated with B.

Because this base material A is an electrically insulating plastic,
Even if the electrode plate 1 is plated with B on its surface, there is no dissimilar metal, so it has the great feature that polarization does not occur.

Therefore, the signal waveform of the biological voltage derived from the skin surface M can be accurately and faithfully transmitted to an electrocardiograph or the like without being disturbed.

Even if the base material A is an insulating plastic, by plating its surface with a metal with excellent electrical properties, the electrode plate 1 can have the electrical function of a metal. .

In addition, since the base material A is made of plastic, which is a poor conductor of heat, there is a risk that the electrode plate 1 will rapidly absorb the patient's body temperature when attached to the skin surface of the extremities of a living body, even when the temperature is low such as in cold weather. Since there is no cold shock, it is possible to smoothly perform measurements while at rest.

Furthermore, since the base material A is made of a plastic having a light specific gravity, the electrode plate 1 is lighter than a conventional metal plate, and the electrode plate 1 can be stably attached to the limb skin surface M for a long period of time for measurement.

Furthermore, since the base material A is made of plastic, the electrode plate 1 is freed from the constraints of production shape based on conventional metal plates, and can be designed freely.

FIG. 2 is a diagram showing the usage state of the same embodiment, in which the living body induction electrode for the limbs is attached to the limb skin surface M of the arms and legs of the living body with adhesive tape 7, and is connected to the power distributor 9 by the lead wire 8. It is further connected to an electrocardiograph 11 through a distribution pipe 10.

At the same time, each of the limb bioinduction electrodes is connected in parallel to a monitor display 12 through a lead wire 8 so that the signal waveform can be displayed and viewed.

FIG. 3 is a diagram showing another embodiment of the above-mentioned embodiment of the present invention, and the difference from FIG. 1 is that there are side edge engaging portions 2 on both sides of the electrode plate 1, and The side edge engaging portion 2 extends laterally, and has a notch 4 and a concave terminal holding portion 5 at its tip.

Since the side edge engaging portions 2 are located on both sides, positioning of the adhesive tape 7 is made easier.

Furthermore, since one side edge engaging portion 2 is extended laterally, there is no protruding portion, making it easier to handle.

FIG. 4 shows still another embodiment of the present invention, in which the upper part of one side edge engaging part 2 is laterally extended to hold a hook 3 and a terminal holding part 5. It was established.

This structure aims to prevent the cream (not shown) applied to the limb skin surface M from getting around to the hook 3 and the terminal holding part 5, and to eliminate protrusions as much as possible to make it easier to handle. It is.

As described above with respect to the embodiments, the present invention comprises an electrode plate 1 and an adhesive tape 7 that adheres to bring the electrode plate 1 into contact with the limb skin surface M. In particular, regarding the electrode plate 1, , the base material A is made of a plastic that is electrically insulating, a poor thermal conductor, lightweight, and plastic, and the surface of the base material A is plated with metal B. As a result, the electrode plate 1 is stably held in contact with the limb skin surface M by the adhesive tape 7, and
It has a number of effects, such as preventing polarization, preventing cold shock, reducing weight, and improving workability.

〔Effect of the invention〕

As described above, according to the present invention, the electrode plate is attached to the limb using adhesive tape and is held in contact with the skin surface, so that the contact surface where the electrode plate and the skin surface are in contact stably derives the biological voltage. It becomes easier.

In addition, since the electrode plate is made by plating the surface of plastic whose base material is an insulator, it has the function of a metal, and there is no polarization effect with the plated part, so the derived bioelectrical signal waveform is , the information is faithfully transmitted to the electrocardiograph, allowing doctors to make accurate diagnoses.

Furthermore, since the base material of the electrode plate is plastic with low thermal conductivity, it is difficult to absorb heat from the skin, which alleviates the cold shock caused by the temperature difference between the skin and the electrode plate when worn, allowing the electrode to remain at rest even in cold weather. This can eliminate any negative effects on the electrocardiogram that should be measured.

In addition, since the base material of the electrode plate is a light plastic, it will not slip off from the part where the limb is attached, so the stability of the attached state can be ensured.

Furthermore, since the base material of the electrode plate is plastic, it is easy to process and can be easily formed into a desired shape.

[Brief explanation of the drawing]

Fig. 1 is a structural diagram of one embodiment of the present invention, Fig. 2 is a diagram showing the usage state of the same embodiment, Fig. 3 is a diagram showing another embodiment of the present invention, and Fig. 4 is a diagram showing the present invention. It is a figure which shows yet another Example of. 1... Electrode plate, 7... Adhesive tape, A... Base material, B... Plating on the surface of base material A, M... ... Biological limb skin surface.

Claims (1)

[Claims] An electrode plate that comes into contact with the skin surface of a living body to lead out the weak voltage generated within the living body, and an electrode plate that is attached to this electrode plate and attached to the limbs of the living body to be attached to the skin surface of the limbs. and an adhesive tape for abutting and holding the electrode plate, the electrode plate having a plastic base material and conductive plating applied to the surface thereof.