JPH0524002U - Adsorption electrode - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide an adsorption electrode that is capable of always achieving maximum contact with the skin and that is electrically stable. [Structure] In a suction electrode composed of a rubber ball 1 formed into a spherical shape with an elastic member and a hemispherical cup 2 attached to the rubber ball 1 through a connecting fitting 3 so as to communicate with the inside, the cup 2 is made flexible. The conductive fiber 5 that is formed of a member and that connects the open end surface of the cup 2 and the connecting fitting 3 is integrally formed with the cup 2.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an adsorption electrode used for electrocardiogram measurement and the like, and more particularly to an adsorption electrode having high adhesion to the skin of a living body and excellent electrical characteristics.

[0002]

[Prior Art]

 As shown in FIG. 7, a chest adsorption electrode used for measuring an electrocardiogram of a living body has conventionally been equipped with a rubber ball 11 serving as a suction portion, a cup 12 serving as a suction portion formed of a hemisphere made of metal, and a rubber. The inside of the ball 11 and the inside of the cup 12 are made to communicate with each other. Then, with the rubber ball 11 compressed, the cup 12 is attached to the chest of the living body, and the restoring force of the rubber ball 11 is used to reduce the atmospheric pressure in the cup 12 to a negative pressure, so that the cup 12 is brought into close contact with the skin of the chest and the ECG is performed. It was used as an electrode. Reference numeral 13 is an induction chip mounting portion.

[0003]

[Problems to be solved by the device]

 However, according to the conventional adsorption electrode configured as described above, when the skin surface of the electrocardiogram measurement subject is not smooth, air leaks from the gap between the metal cup end surface and the skin surface, and the adsorption of the electrode is prevented. It will be difficult. In addition, the end surface of the metal cup digs into the skin, causing pain and extravasation. Furthermore, since there are secant lines called Langer lines throughout the skin and the tensions in the vertical and horizontal directions are different, this anisotropy also exists at the electrode attachment site, especially in the flank region. However, there was a problem that it was difficult to adsorb with a metal cup.

Also, conventionally, a cup made of conductive rubber has been considered. However, the conductive rubber material has a drawback that it has a high contact resistance with the skin and that most of it cannot be used as an electrode material.

The present invention has been made in view of the above points, and an object of the present invention is to provide an adsorption electrode that can always obtain the maximum contact state with the skin and that is electrically stable. ..

[0006]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention comprises a suction portion formed of an elastic member in a spherical shape, and a hemispherical suction portion attached to the suction portion in communication with the inside through a connecting fitting. In the electrode, the adsorption portion is formed of a flexible member, and the conductive fiber that connects the open end surface of the adsorption portion and the connecting fitting is integrally formed with the adsorption portion.

[0007]

[Action]

 According to the above configuration, by forming the adsorption part with a flexible member, it is deformed flexibly according to the anisotropic state of the skin, and it is always deformed into the shape optimal for adsorption and the state of maximum contact with the skin. Can be obtained. Further, by arranging one end of the conductive fiber on the end surface of the adsorbing portion that comes into contact with the skin and connecting the other end to the connecting metal fitting, it is possible to stabilize the electric signal taken out through the connecting metal fitting during the electrocardiogram measurement.

[0008]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings.

1 and 2 show the configuration of an embodiment of the present invention. In the figure, on the diameter of a rubber ball 1 which is a suction portion formed in a spherical shape by an elastic member, a tubular connecting portion 1a is integrally provided so as to project outward. Further, the cup 2 which is the suction portion is formed in a hemispherical shape from a flexible member such as rubber, and one end of a cylindrical connecting fitting 3 is integrally formed at the center of the cup 2. The connecting fitting 3 is provided so as to project on the extension of the radius of the cup 2, and the guide chip mounting portion 4 formed of a metal plate is fixed to the base portion projecting from the cup 2. The other end of the connecting fitting 3 is fitted and fixed in the connecting portion 1a of the rubber ball 1, and the insides of the rubber ball 1 and the cup 2 are in communication with each other via the connecting fitting 3.

In addition, a plurality of electrically conductive fibers 5 such as carbon fibers, which are connected to the base end of the connecting fitting 3 and have the other end serving as a skin contact surface, are radially extended to the inner circumference of the cup 2. It is molded integrally with the cup 2.

Next, the operation of this embodiment will be described. When the cup 2 is pressed against the skin 6 of the subject while the rubber ball 1 is compressed as shown in FIGS. 3 and 5, and the pressing of the rubber ball 1 is released as shown in FIGS. 4 and 6, the rubber ball 1 is released. 1 expands due to the restoring force, and the inside of the cup 2 becomes a negative pressure to adsorb the skin 6. At this time, since the cup 2 has flexibility, it can be deformed into an elliptical shape according to the anisotropic state of the skin 6, maximizing the blowing amount of the skin 6 and enhancing the adhesion.

On the other hand, the conductive fiber 5 formed integrally with the cup 2 electrically connects the contact surface of the cup 2 with the skin 6 and the connecting metal fitting 3, so that a signal connecting metal fitting is used for measuring the electrocardiogram. It is possible to stably lead out to the outside through the 3 and the guide chip mounting portion 4. Here, since the conductive fiber 5 is flexible, it does not affect the deformation of the cup 6 due to the anisotropy of the skin 6.

According to this embodiment, since the cup 2 is deformed according to the anisotropy of the skin 6, the suction amount of the skin 6 can be maximized, and the suction force and the holding time can be increased. Therefore, it is possible to prevent the electrodes from falling off during the electrocardiogram measurement due to individual differences in the skin 6. Further, since the conductive fiber 5 formed integrally with the cup 2 has a low contact resistance with the skin 6, the electrocardiographic signal can be stably and easily derived.

[0014]

[Effect of the device]

 As described above, according to the present invention, the cup, which is the adsorption part of the adsorption electrode, is formed of the flexible member, and the conductive fiber that connects the cup end face and the coupling fitting is integrally formed with the cup. It is possible to obtain close contact with the skin and prevent the electrodes from falling off during electrocardiogram measurement. Further, since the conductive fiber has a low contact resistance with the skin, the electrocardiogram signal can be stably and easily derived.

[Brief description of drawings]

FIG. 1 is a partial sectional front view showing the configuration of an embodiment of an adsorption electrode of the present invention.

FIG. 2 is a bottom view of FIG.

FIG. 3 is a partially sectional front view showing a state where the rubber ball of FIG. 1 is compressed.

FIG. 4 is a partial cross-sectional front view showing a state in which the rubber ball of FIG. 1 is released from compression.

5 is a bottom view of FIG.

FIG. 6 is a bottom view of FIG.

FIG. 7 is a perspective view showing a configuration of an example of a conventional adsorption electrode.

[Explanation of symbols]

1 Rubber ball (suction part) 2 Cup (suction part) 3 Connecting fitting 5 Conductive fiber

Claims (1)

[Scope of utility model registration request] 1. A suction part formed in a spherical shape by an elastic member,
In an adsorption electrode composed of a hemispherical adsorption portion attached to the inside of the suction portion via a connecting metal fitting, the adsorption portion is formed of a flexible member, and the open end surface of the adsorption portion and the connecting metal fitting. An adsorption electrode, characterized in that a conductive fiber for connecting to and is formed integrally with the adsorption part.