JPH0975315A - Film-like electrode for impedance measurement - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inexpensive, throw-away and hygienic electrode for measurement by forming a conductive metallic layer having through-holes near both ends of a film-like base having an insulating characteristic. SOLUTION: This film-like electrode is provided with the film-like base 1 and the conductive metallic layer 2 having the through-holes 3 and is provided with the through-holes for electrically conducting the front and rear surfaces of the film. The film-like electrode is obtd. by applying copper plating on both surfaces of a high-polymer film having the through-holes 3, applying a photosetting resin thereon, photosetting the metallic layer parts with a negative previously formed with patterns and allowing the metallic parts to remain after washing. The film-like electrode is placed around the ankles of both wrists by paralleling the major axis direction of the film-like electrode previously coated with conductive cream in the metallic electrode parts with the hands. The parts for pressing the metallic electrode parts from above has the structure of the conductive surfaces. Impedance is measured by using the electrode retainers having the structure obtd. by connecting the conductive surfaces to a main body device by means of cords.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrode for impedance measurement, which is used in the fields of health care and medical care, and is particularly used for measuring body fat by the impedance method for determining the degree of obesity.

[0002]

2. Description of the Related Art Conventionally, as an electrode for measuring impedance, which is used to help determine the degree of obesity of a human body, for example, as disclosed in Japanese Patent Laid-Open No. 5-337096, a spoid rubber is used on the wrist or ankle. A method of using a pair of adsorption electrodes that apply negative pressure and adhere to the skin, or a conductive metal layer is formed on one surface of a polymer film on the wrist or ankle, and a water-containing conductive adhesive agent is formed on that surface. A method of forming a layer and attaching it to the skin was used.

[0003]

As described above, as a conventional impedance measuring electrode, for example, the adsorption electrode, the same electrode is used by a large number of people, so it is economical, but infections such as skin diseases do not occur. There are concerns and there are hygiene issues.

Further, in this method, the contact area with the skin changes depending on the degree of suction of the spoid rubber, and
The suction pressure of the spoid rubber may decrease over time due to the infiltration of air, and the contact area may change, causing variations in the measured values. Furthermore, when applied to a child or a person to be measured who has an allergic constitution, there is a possibility that the skin may be inflamed. In addition, hepatitis and other infections may occur among the subjects.

Further, the conductive adhesive electrode has a conductive metal layer formed on one surface of a polymer film, and a water-containing conductive adhesive layer formed on that surface, which is attached to the skin, but the cost is high. Also, the resistance value of the pressure-sensitive adhesive layer changes depending on the production lot.

Further, there are problems that the water content evaporates during storage and the resistance value changes, or the adhesive cannot be used frequently because it uses an adhesive. In addition, this conductive adhesive electrode is a laminate film such as a copper foil coated with a conductive adhesive, and is used as a disposable, so that there is a problem that the measurement cost is high.

The copper foil laminated electrode of the present invention is inexpensive,
The present invention also provides a disposable and hygienic measuring electrode.

[0008]

In order to solve the above-mentioned problems, the present invention provides a conductive metal layer having through holes near both ends of a film-like support, and more preferably a conductive metal having through holes. A film-like support having a non-slip portion provided on a portion other than the layer is fixed in close contact with the skin.

At the time of measurement, the surface of the insulating film-like support may be coated with a conductive cream to improve the adhesion. However, since a slip stopper is provided on the surface of the insulating film-like support, the pressing means is used at the time of measurement. Therefore, even if the electrode is pressed against the measurement site, it does not slip. That is, as shown in FIG.
In the vicinity of both ends of the insulating film-like support of ~ 200μ,
Attach a conductive metal layer having a through hole to form a metal electrode, connect a lead wire that applies an AC voltage to one side electrode, and connect a lead wire that outputs the voltage value generated in the body to the two side electrode. Connect, press the electrode to the site to be measured,
The measurement is performed by pressing the measurement position by the pressing means.

At this time, the insulating film-like support is preferably somewhat flexible, and the material is PET.
Any polymer film such as (polyethylene terephthalate) may be used. Others, polypropylene resin, paper, cloth,
Alternatively, leather or the like can be used. Further, the insulating film-shaped support is required to have appropriate bending and rigidity, but the thickness is not particularly limited. The shapes of the metal electrode and the slip stopper are not particularly limited, and may be, for example, dot-shaped or striped. Also, the size and number of through holes are not particularly limited. As the pressing means, one having no conductivity is desirable,
For example, clips made of synthetic resin, wood, inorganic material, etc. are suitable. The metal electrode is a conductive metal such as copper or silver.

[0011]

In the film electrode of the present invention, the conductive metal layers having through holes are formed as electrodes on both ends of the insulating film support. At the time of measurement, a non-conductive electrode pressing means is used to output a lead wire for applying a minute high-frequency current by applying an alternating current to one electrode and a voltage value generated in the body to the two electrodes. The lead wires are connected to each other, the electrodes are pressed against the site to be measured, and the electrodes are pressed by the non-conductive electrode pressing means to measure the voltage between both electrodes. By this measurement, the body fat percentage of the living body is measured,
It helps in health management for obesity and adult diseases.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a film electrode of the present invention. In the figure, 1 is a film-shaped support, and 2
Is a conductive metal layer having through holes. Further, 3 is a through hole for electrically connecting the upper and lower surfaces of the film.

The film-like electrode is formed by coating both sides of a polymer film having a through hole with copper, applying a photo-curable resin, and using a negative in which a pattern is formed in advance to form a metal layer portion (electrode layer, anti-slip layer). After photo-curing and washing, for example, the metal part having a pattern as shown in FIG. 1 is left.

With this film-shaped electrode, the major axis direction of the film-shaped electrode, in which the conductive cream is previously applied to the metal electrode part, is applied parallel to the hand, centering on the ankles of both wrists, and the metal electrode part is placed on top of it. The portion to be pressed has a structure of a conductive surface, and the impedance is measured using an electrode pressing device having a structure in which the conductive surface is connected to the main body device (for example, Impimator SS-110 type manufactured by Sekisui Chemical Co., Ltd.) with a cord. .

The measurement method was carried out by using the film-like electrode of the present invention and an adsorption electrode as a comparative example, and measuring the same 5 times every 1 minute by the same person. Was less than half that of the adsorption electrode. The results are shown in Table 1.

[0016]

[Table 1]

The film-like electrode of the present invention may be in the form of a film or a tape, depending on the conditions of use, and its form is arbitrary.

[0018]

As described above, the film electrode of the present invention has a low manufacturing cost and can be used more frequently. Moreover, since it can be disposable, there is no risk of infection such as skin inflammation. The electrodes are completely dry, and there are no problems with time-dependent changes such as water evaporation, quality deterioration, etc., and storage stability is high.
Further, the electrode portion that comes into contact with the skin is a metal that does not vary in quality between lots, and therefore the measurement accuracy is high.

[0019]

[Brief description of drawings]

FIG. 1 is a diagram illustrating an example of a film electrode of the present invention. In the figure, 1 ... Film support 2 ... Electrode 3 ... Through hole

Claims (2)

[Claims] 1. A film-like electrode for impedance measurement, characterized in that a conductive metal layer having through holes is formed near both ends of an insulating film-like support. 2. The film electrode according to claim 1, wherein a slip stopper is provided on the surface of the insulating film support other than the conductive metal layer having a through hole.