JPH085684Y2 - Chest adsorption electrode - Google Patents

Description

[Detailed description of the device]

 [Purpose of device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chest adsorption electrode used for measuring an electrocardiogram, and more particularly to a chest adsorption electrode having an excellent function of adhering to the skin of a living body.

[0002]

2. Description of the Related Art As shown in FIG. 14, a chest adsorption electrode used for measuring an electrocardiogram of a living body is conventionally equipped with a rubber ball 51 serving as a suction member and a cup 52 serving as a suction member formed in a hemispherical shape with metal. The inside of the rubber ball 51 is communicated with the inside of the cup 52. Then, with the rubber ball 51 compressed, the cup 52 is attached to the chest of the living body, and the restoring force of the rubber ball 51 is used to reduce the atmospheric pressure in the cup 52 to a negative pressure, so that the cup 52 is in close contact with the skin of the chest and the electrocardiogram is obtained. It was used as an electrode.

[0003]

However, according to the conventional chest adsorption electrode configured as described above, when the skin surface condition of the electrocardiogram measurement subject is not smooth, the gap between the metal cup end surface and the skin surface is Air leaks from the electrodes, making it difficult to adsorb 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. It was strong and difficult to adsorb with a metal cup.

The present invention has been made in view of the above points, and an object of the present invention is to provide a chest adsorption electrode which can always obtain the maximum contact state with the skin. [Constitution of device]

[0005]

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 chest adsorption electrode, which is formed of a conductive member in a hemispherical shape and includes an adsorption portion that communicates with the inside of the suction portion, the adsorption portion is a hollow hyper- hemispherical shape made of an electrically conductive member having elasticity or a hollow rod having a major axis in the axial direction. It is characterized in that it is formed in the shape of a head spheroid.

Further, it is characterized in that it is covered with a thin film in which a notch portion is formed around the open end face of the suction portion.

[0007]

According to the above construction, by forming the adsorbing portion with the conductive member having elasticity, the adsorbing portion is flexibly deformed in accordance with the anisotropic state of the skin and is always deformed into the optimum shape for adsorbing. It is possible to obtain a close contact state with the skin. Also,
By the suction unit and the hollow majority spherical, large deformability in-plane direction of the skin, deformation makes it possible to obtain a function of pinching the skin from left and right, to obtain a stable adsorption state with attraction it can. Especially by a hollow 截 head spheroid to the axial direction and the major axis of the suction unit, eliminate compressive deformation in the axial direction at the time of adsorption, becomes only the compression deformation in the radial direction, further stably adsorbed You can

Further, by covering the end surface of the adsorption portion with a thin film having a cut portion, a large contact area can be obtained regardless of the elasticity of the skin.

[0009]

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

FIG. 1 shows a first embodiment of the present invention. In the figure, a rubber ball 1 that is a suction portion formed in a spherical shape by an elastic member is attached to a rubber ball mounting member 2 formed in a cylindrical shape on the outer diameter. The rubber ball mounting member 2 is integrally molded with a cup 3 which is a suction member formed of a conductive member having elasticity such as conductive rubber in a hemispherical shape. The insides of the rubber ball 1 and the cup 3 are The rubber ball fitting 2 communicates with the inner circumference thereof. An induction chip mounting portion 4 is fixed to the rubber ball mounting bracket 2.

Next, the operation of this embodiment will be described. When the cup 3 is pressed against the skin of the subject while the rubber ball 1 is compressed as shown in FIGS. 2 and 3, and the pressing of the rubber ball 1 is released as shown in FIGS. 4 and 5, the rubber ball 1 becomes It expands due to the restoring force, and the inside of the cup 3 becomes a negative pressure to adsorb the skin. At this time, since the cup 3 has elasticity, the cup 3 is deformed into an elliptical shape according to the anisotropic state of the skin, and the suction amount of the skin can be maximized. Furthermore, since the end face in the minor axis direction of the cup 3 which is deformed into an elliptical shape due to anisotropy becomes substantially linear, it moves in a direction of pinching the sucked skin from both sides. Here, by making the cross-sectional shape of the end surface of the cup 3 into a V-shaped labyrinth shape 5 as shown in FIG. 6, the end surface strongly digs into the skin and air leakage can be prevented.

According to this embodiment, since the cup 3 is deformed according to the anisotropy of the skin, the amount of suction of the skin can be maximized, and the suction force and the holding time can be increased. However, since the cup 3 has a hemispherical shape, the skin can be grasped by the deformation, and the skin can be reliably gripped and the electrode can be prevented from falling off.

FIG. 7 and FIG. 8 show a second embodiment of the present invention. In this embodiment, the skin adhesion film 12 which is a thin film in which a cross-shaped cut portion 11 is formed around the open end surface of the cup 3 is covered.

According to this embodiment, when the skin is inhaled by the cup 3 as in the case of the first embodiment, as shown in FIG.
Also, as shown in FIGS. 10 and 10 before and after inhalation, the skin adhesion film 12 deforms along the shape of the skin. As a result, a large contact area can always be obtained regardless of the elasticity of the skin, it is electrically stable, and air leakage can be prevented by fluid resistance.

FIG. 11 shows a third embodiment of the present invention. In this embodiment, the rubber ball 1, the rubber ball mounting bracket 2, the cup 3 and the guide chip mounting portion 4 are all integrally molded of conductive rubber. According to this embodiment, the manufacturing cost can be significantly reduced.

FIG. 12 shows a fourth embodiment of the present invention. In this embodiment, the metal cup 52 of the conventional chest adsorption electrode shown in FIG.
A pad 21 having a hemispherical shape having the same function as that of the cup 3 formed of a conductive rubber in a hemispherical shape shown in FIG. Also in this embodiment, the same effect as in the first embodiment can be obtained.

FIG. 13 shows a fifth embodiment of the present invention. In each of the above embodiments, the case where the cup 3 is formed into a hollow majority spherical shape has been described, but in the present embodiment, the cup 3 is formed.
Was a hollow 截 head spheroid to the axial direction and a major axis. According to this embodiment, since the cup 3 is expanded in the axial direction and compressed in the radial direction when the cup 3 is adsorbed, the function of pinching the skin from the left and right is further improved.

[0018]

As described above, according to the present invention,
Since the cup, which is the adsorption part of the chest adsorption electrode, is formed of a hollow conductive hemisphere or a hollow truncated spheroid with the major axis in the axial direction, the cup is always made to maximize the skin. It is possible to obtain a close contact state, and it is possible to prevent the electrodes from falling off when measuring an electrocardiogram. Also, by covering the open end surface of the cup with a thin film, electrical stability during measurement can be obtained and air leakage can be prevented.

[Brief description of drawings]

FIG. 1 is a partially sectional front view showing the configuration of a first embodiment of the present invention.

FIG. 2 is a partially sectional front view showing a compressed state of the rubber ball according to the first embodiment of the present invention.

3 is a sectional view taken along the line AA of FIG.

FIG. 4 is a partially sectional front view showing a state where the rubber ball of the first embodiment of the present invention is released from compression.

FIG. 5 is a sectional view taken along line BB of FIG. 4;

6 is a cross-sectional view showing an example of the end face shape of the cup of FIG.

FIG. 7 is a partially sectional front view showing the configuration of the second embodiment of the present invention.

FIG. 8 is a bottom view of FIG.

FIG. 9 is a partially sectional front view showing a compressed state of a rubber ball according to a second embodiment of the present invention.

FIG. 10 is a partial cross-sectional front view showing a state in which the compression of the rubber ball according to the second embodiment of the present invention is released.

FIG. 11 is a partially sectional front view showing the configuration of the third embodiment of the present invention.

FIG. 12 is a partially sectional front view showing the configuration of a fourth embodiment of the present invention.

FIG. 13 is a vertical cross-sectional view showing the shape of the cup of the fifth embodiment of the present invention.

FIG. 14 is a perspective view showing a configuration of an example of a conventional chest adsorption electrode.

[Explanation of symbols]

 1 Rubber ball (suction part) 3 Cup (adsorption part) 11 Cut part 12 Skin adhesion film (thin film)

Claims (2)

[Scope of utility model registration request] 1. A suction part formed of an elastic member in a spherical shape,
In a chest adsorption electrode, which is formed of a conductive member in a hemispherical shape and includes an adsorption portion that communicates with the inside of the suction portion, the adsorption portion is a hollow hyper- hemispherical shape made of an electrically conductive member having elasticity or a hollow rod having a major axis in the axial direction. Chest adsorption electrode characterized by being formed in the shape of a head spheroid. 2. The chest adsorption electrode according to claim 1, wherein the adsorption electrode is covered with a thin film in which a cut portion is formed around the open end surface of the adsorption portion.