JPH077926Y2 - Adsorption electrode - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention 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]

2. Description of the Related Art As shown in FIG. 7, a chest adsorption electrode used for measuring an electrocardiogram of a living body is conventionally a rubber ball which is a suction portion.
A cup 12 which is a suction portion formed of a metal in a hemispherical shape is attached to 11 and the inside of the rubber ball 11 is communicated with the inside of the cup 12. And the cup with the rubber ball 11 compressed
12 was attached to the chest of a living body, the atmospheric pressure in the cup 12 was made negative by utilizing the restoring force of the rubber ball 11, and the cup 12 was brought into close contact with the skin of the chest to be used as an electrocardiographic electrode. Reference numeral 13 is an induction chip mounting portion.

[0003]

However, according to the conventional adsorption electrode configured as described above, when the skin surface of the electrocardiogram measurement subject is not smooth, air is introduced from the gap between the metal cup end surface and the skin surface. Leaks, making it difficult to attract the electrodes. In addition, the end surface of the metal cup bites into the skin, causing pain and blood overflow. Furthermore, since there are secant lines called Langer lines in the skin throughout the body 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. strongly,
There was a problem that it was difficult to adsorb with a metal cup.

Further, conventionally, a cup made of conductive rubber has been considered. However, the conductive rubber material has a drawback in that it has a large contact resistance with the skin and almost no material can 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 which can always obtain the maximum contact state with the skin and which is electrically stable.

[0006]

In order to achieve the above object, the present invention provides a suction part formed of an elastic member in a spherical shape,
In a suction electrode composed of a hemispherical suction portion mounted in communication with the suction portion through a connecting metal fitting, the suction portion is formed of a flexible member, and the open end surface of the suction portion and the connecting metal fitting are provided. It is characterized in that the conductive fiber for connecting to and is molded integrally with the adsorption portion.

[0007]

According to the above structure, by forming the adsorption portion with the flexible member, it is deformed flexibly in accordance with the anisotropic state of the skin, and is always deformed into the optimum shape for adsorption to maximize the skin. The close contact state can be obtained. Further, by disposing 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 fitting, it is possible to stabilize an electric signal taken out through the connecting fitting during electrocardiogram measurement.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

1 and 2 show the construction 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 projecting outward is integrally provided. Further, the cup 2 which is the suction portion is formed in a hemispherical shape by 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 coupling 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 communicate with each other via the connecting fitting 3.

Also, one end of the cup 2 is connected to the inner circumference of the cup 2 with a connecting fitting 3.
Conductive fibers 5 such as a plurality of carbon fibers, which are connected to the base end of and are extended to the end face whose other end is the skin contact face, are radially integrally formed 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. 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, the cup 2 is deformed into an elliptical shape according to the anisotropic state of the skin 6, and the blown amount of the skin 6 can be maximized to improve the adhesion.

On the other hand, by the conductive fiber 5 formed integrally with the cup 2, the contact surface of the cup 2 with the skin 6 and the connecting fitting 3 are connected.
Since and are electrically connected to each other, a signal can be stably led out to the outside through the connecting metal fitting 3 and the guiding tip mounting portion 4 during the electrocardiogram measurement. Here, since the conductive fiber 5 is flexible, it does not affect the deformation of the skin 6 of the cup 2 due to anisotropy.

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. In addition, since the conductive fiber 5 formed integrally with the cup 2 has a low contact resistance with the skin 6,
The electrocardiogram signal can be stably and easily derived.

[0014]

As described above, according to the present invention,
The cup, which is the adsorption part of the adsorption electrode, is formed of a flexible member, and the conductive fiber that connects the cup end face and the connecting fitting is molded integrally with the cup, so that it is possible to always obtain the maximum contact with the skin. It is possible to prevent the electrodes from falling off when measuring an electrocardiogram. 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 partially 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 partial cross-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 of an elastic member in a spherical shape,
In a suction electrode composed of a hemispherical suction portion mounted in communication with the suction portion through a connecting metal fitting, the suction portion is formed of a flexible member, and the open end surface of the suction portion and the connecting metal fitting are provided. An adsorption electrode, characterized in that a conductive fiber for connecting to and is formed integrally with the adsorption part.