JPH0582405U - Hook type connection electrode - Google Patents

Abstract

(57) [Abstract] [Purpose] To stabilize the contact state of the hook-type connecting electrode with the biomedical electrode to prevent the hook-type connecting electrode from coming off easily. A fixing plate having an opening that contacts at least two points with respect to the protrusion of the bioelectrode, and a displaceable plate with respect to the protrusion, and at least 2 with respect to the protrusion of the bioelectrode. The movable plate has an opening formed in contact with each other at a location, and the projection of the bioelectrode is sandwiched between the opening of the fixed plate and the opening of the movable plate.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a hook-type connecting electrode, in particular, a hook-type connecting electrode that can be fitted to a biomedical electrode that is attached to a living body of a patient to induce an electrocardiogram signal.

[0002]

[Prior Art]

 It has been well known that, when inducing an electrocardiogram signal from a living body of a patient, a living body electrode attached to the living body and a hook-type connecting electrode fitted to the living body electrode are used. This will be described below with reference to FIG. That is, in FIG. 4, reference numeral 10 is a hook-type connecting electrode, and 20 is a living body electrode. The living body electrode 20 is attached to the living body of a patient, and the hook portion 30 of the hook-type connecting electrode 10 is fitted to the protruding portion 20A (arrow p in FIG. 4A). As shown in FIGS. 4 (B) and 4 (C), the outline of the hook portion 30 is a fixed plate 30A fixed to the case 11 of the hook-type connection electrode 10, and a coil spring or the like for the fixed plate 30A. And a movable plate 30B which is displaceable (not shown) via the elastic means. In order to fit the hook-type connecting electrode 10 to the biomedical electrode 20, the movable plate 30B is displaced in the direction of arrow q against the elastic force of the coil spring (FIG. 4 (B)), and the fixed plate 30A is moved. The opening 30A1 of the above and the opening 30B1 of the movable plate 30B are overlapped with each other, and the projection 20A of the bioelectrode 20 is inserted into both the openings 30A1 and 30B1. After that, based on the restoring force of the coil spring, if the opening 30B1 of the movable plate 30B is displaced in the direction of arrow r with respect to the opening 30A1 of the fixed plate 30A (FIG. 4 (C)), the biological electrode 20 The projecting portion 20A is sandwiched by the peripheral edges of both openings 30A1 and 30B1. In this state, an electrocardiogram signal induced from the patient's living body via the biomedical electrode 20 is transmitted through the induction cord 40 via the hook-type connecting electrode 10 and input to an electrocardiograph (not shown), where Analysis is done.

[0003]

[Problems to be solved by the device]

 In the above conventional technique (FIG. 4), both the opening 30A1 of the fixed plate 30A and the opening 30B1 of the movable plate 30B are circular (FIG. 4 (D)). Therefore, as shown in FIG. 4D, the conventional hook-type connecting electrode 10 is only in contact with the protruding portion 20A of the living body electrode 20 at two locations a and b. Therefore, there is a problem that the contact state between the two electrodes 10 and 20 becomes unstable and the hook-type connecting electrode 10 is easily separated from the living body electrode 20. An object of the present invention is to stabilize the contact state of the hook-type connecting electrode with the biological electrode so that the hook-type connecting electrode does not easily come off.

[0004]

[Means for Solving the Problems]

 The above-mentioned problem is that the fixing plate 1A is formed with an opening 1A1 that comes into contact with the projection 2A of the biological electrode 2 at least at two locations A and B, and is displaceable with respect to the fixing plate 1A. The movable plate 1B is formed with an opening 1B1 that comes into contact with the protrusion 2A of the biological electrode 2 at least at two points C and D. The opening 1A1 of the fixed plate 1A and the opening of the movable plate 1B. This is solved by a hook-type connecting electrode characterized in that the projection 2A of the biological electrode 2 is sandwiched by the portion 1B1.

[0005]

[Action]

 As described above, according to the present invention, with respect to the protrusion 2A of the biological electrode 2, the fixed plate 1A having the openings 1A1 that come into contact with at least two points A and B, and the displacement with respect to the fixed plate 1A. It is possible that the movable plate 1B is formed with an opening 1B1 that comes into contact with the protrusion 2A of the biological electrode 2 at least at two points C and D, and is movable with the opening 1A1 of the fixed plate 1A. A hook-type connecting electrode is provided which is characterized in that the projection 2A of the biological electrode 2 is sandwiched by the opening 1B1 of the plate 1B. According to the above configuration, the opening 1 A1 of the fixed plate 1A and the opening 1B1 of the movable plate 1B come into contact with the protrusion 2A of the biological electrode 2 at least at two points A, B and C, D, respectively. (FIG. 3 (C)). That is, when viewed from the entire hook-type connection electrode 1, the bio-electrode 2 is in contact with at least four locations. Therefore, compared with the conventional case (FIG. 4 (D)), the contact area is at least doubled (FIG. 3 (C)), and the contact state between the hook-type connecting electrode 1 and the biological electrode 2 is extremely stabilized. The hook-type connecting electrode 1 became difficult to come off.

[0006]

【Example】

 Hereinafter, the present invention will be described by way of examples with reference to the accompanying drawings. FIG. 1 is an overall view of an embodiment of the present invention. As described in claim 1, the present invention provides a fixing plate 1A having an opening 1A1 which is in contact with the protrusion 2A of the biological electrode 2 at least at two points A and B, and the fixing plate 1A. A movable plate 1B that is displaceable with respect to the projection 2A of the biological electrode 2 and has an opening 1B1 that is in contact with at least two points C and D, and the opening of the fixed plate 1A. 1A1 and an opening 1B1 of a movable plate 1B sandwich a protrusion 2A of the biological electrode 2 to provide a hook-type connection electrode.

As shown in FIG. 1, the hook-type connecting electrode 1 according to the present invention can be fitted to the biomedical electrode 2 (arrow P) and includes a case 1C. The case 1 comprises a main body 1C1 and a lid 1C4, and is entirely made of an insulating material, for example, plastic. The main body 1C1 has a flat cylindrical shape, and the lid 1C4 has a disk shape corresponding to the shape of the main body 1C1. The main body 1C1 is provided with a conductive fixing plate 1A connected to the guide cord 4, and the fixing plate 1A has at least two portions A with respect to the protruding portion 2A of the biological electrode 2 as described later. , B (FIG. 3 (C)) to be in contact with each other are formed. The shape of the peripheral edge of the opening 1A1 is, for example, a quadrangle in this embodiment. As shown in FIG. 2, a recess 1C2 into which an elastic member, for example, one end of a coil spring 3 is inserted is formed inside the main body 1C1 of the case 1C, and the recess 1C2 is formed in the recess 1C2. Is a protrusion 1D extending outward from the main body 1C1. The other end of the coil spring 3 is inserted into the recess 1B2 of the movable plate 1B, and the movable plate 1B is displaceable with respect to the fixed plate 1A inside the main body 1C1 via the coil spring 3. Is becoming As will be described later, the movable plate 1B is formed with an opening 1B1 that comes into contact with the projection 2A of the biological electrode 2 at least at two points C and D (FIG. 3C). A metal frame 1B4 for reinforcement is provided on the peripheral edge of 1B1. The shape of the peripheral edge of the opening 1B1 is, for example, a quadrangle in this embodiment. The movable plate 1B is entirely formed of an insulating material, for example, plastic, and has a pressing piece 1B3. The pressing piece 1B3 can displace the movable plate 1B with respect to the fixed plate 1A against the elastic force of the coil spring 3 by pressing it with a finger of the hand. FIG. 2B is a view of the case 1C with the lid 1C4 taken off, as viewed from the back side of the main body 1C1. Stoppers 1E, 1F, 1G, 1F are formed inside the main body 1C1 so that the movable plate 1B can be locked, and the pressing piece 1B3 of the movable plate 1B is connected to the main body 1C1. Through the opening 1C3. With this configuration, when the movable plate 1B is left as it is, the rear end of the movable plate 1B is locked to the stoppers 1E and 1F by the elastic force of the coil spring 3 as shown in the figure. .. However, when the pressing piece 1B3 of the movable plate 1B is pushed by the finger of the hand to displace it in the direction of the arrow S against the elastic force of the coil spring 3, the front end portion of the movable plate 1B is pushed against the stoppers 1G, 1H. Then, the opening 1B1 of the movable plate 1B and the opening 1A1 of the fixed plate 1A overlap each other (FIG. 3 (B)). Further, when the finger of the hand is released from the pressing piece 1B of the movable plate 1B, the restoring force of the coil spring 3 causes the rear end of the movable plate 1B to be locked to the stoppers 1E and 1F, as shown in the figure. Return to the original position.

The operation of the present invention having the above configuration will be described below with reference to FIG. In FIG. 3, for simplification of description, only the opening 1A1 of the fixed plate 1A and the opening 1B1 of the movable plate 1B are shown. Further, FIG. 3 is a view seen from the front side (FIG. 2 (A)) of the hook-type connecting electrode 1 according to the present invention. First, as shown in FIG. 3 (A), when the pressing piece 1B3 of the movable plate 1B is not pressed by the fingers of the hand, the elastic force of the coil spring 3 causes the movable plate 1B to move to the position shown in FIG. 3 (B). Therefore, the openings 1A1 and 1B1 do not overlap each other. However, when the pressing piece 1B3 of the movable plate 1B is pushed by a finger of the hand, the movable plate 1B is displaced with respect to the fixed plate 1A as shown by an arrow Q, and the front end portion of the movable plate 1B becomes the stoppers 1G 1H. It is locked (FIG. 2 (B)), and as shown in FIG. 3 (B), both openings 1A1 and 1B1 overlap. In this state, the projection 2A (hatched portion) of the bioelectrode 2 is inserted into both openings 1A1 and 1B1 (FIG. 3 (B)). Next, if the finger of the hand is released from the pressing piece 1B3 of the movable plate 1B with the protruding portion 2A (hatched portion) of the biological electrode 2 inserted in both openings 1A1 and 1B1, the movable plate 1B is fixed. It is displaced in the direction of arrow R with respect to the plate 1A. Therefore, the protrusion 2A of the biological electrode 2 is sandwiched by the openings 1A1 and 1B1. Moreover, in this case, the shapes of the peripheral edges of both openings 1A1 and 1B1 are quadrangular, respectively, whereas the shape of the protrusion 2A of the biological electrode 2 is circular. Therefore, the opening 1A1 of the fixed plate 1A comes into contact with the protrusion 2A at two points A and B, and the opening 1B1 of the movable plate 1B similarly has two points C and D with respect to the protrusion 2A. Contact at. That is, when viewed from the entire hook-type connecting electrode 1, there are four contact points with the biological electrode 2. Therefore, the number of contact points is increased from the conventional two locations (FIG. 4 (D)) to four locations (FIG. 3 (C)), and the contact state between the hook-type connecting electrode 1 and the biological electrode 2 is extremely stable. It became so.

[0009]

[Effect of the device]

 As described above, according to the present invention, with respect to the protrusion 2A of the biological electrode 2, the fixed plate 1A having the openings 1A1 that come into contact with at least two points A and B, and the displacement with respect to the fixed plate 1A. It is possible that the movable plate 1B is formed with an opening 1B1 that comes into contact with the protrusion 2A of the biological electrode 2 at least at two points C and D, and is movable with the opening 1A1 of the fixed plate 1A. A technical means called a hook-type connecting electrode has been devised which is characterized in that the projection 2A of the biological electrode 2 is sandwiched by the opening 1B1 of the plate 1B. According to the above configuration, the opening 1 A1 of the fixed plate 1A and the opening 1B1 of the movable plate 1B come into contact with the protrusion 2A of the biological electrode 2 at least at two points A, B and C, D, respectively. (FIG. 3 (C)). That is, when viewed from the entire hook-type connection electrode 1, the bio-electrode 2 is in contact with at least four locations. Therefore, compared with the conventional case (FIG. 4 (D)), the contact area is at least doubled (FIG. 3 (C)), and the contact state between the hook-type connecting electrode 1 and the biological electrode 2 is extremely stabilized. The technical effect that the hook-type connecting electrode 1 is unlikely to come off is achieved.

[Brief description of drawings]

FIG. 1 is an overall view showing an embodiment of the present invention.

FIG. 2 is a detailed view showing an embodiment of the present invention.

FIG. 3 is an explanatory view of the operation of the present invention.

FIG. 4 is an explanatory diagram of a conventional technique.

[Explanation of symbols]

 1 Hook Type Connection Electrode 2 Bioelectrode 1A Fixed Plate 1B Movable Plate 1A1, 1B1 Opening 2A Projection A, B, C, D Contact Location

Claims (2)

[Scope of utility model registration request] 1. A fixed plate 1A having an opening 1A1 that contacts at least two points A and B with respect to a protrusion 2A of a biological electrode 2, and is displaceable with respect to the fixed plate 1A. The movable plate 1B is formed with an opening 1B1 that comes into contact with the projection 2A of the biological electrode 2 at least at two points C and D, and the opening 1 of the fixed plate 1A is formed.
A hook-type connection electrode, characterized in that the protrusion 2A of the biological electrode 2 is sandwiched between A1 and the opening 1B1 of the movable plate 1B. 2. An opening 1A formed in the fixed plate 1A.
The hook-type connecting electrode according to claim 1, wherein each of the shapes of the peripheral edge of 1 and the peripheral edge of the opening 1B1 formed in the movable plate 1B is a quadrangle.