JP2550460B2 - Biomedical electrode device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a biomedical electrode device used for electrocardiogram measurement and the like, and more particularly to a biomedical electrode device using an adhesive electrode.

[0002]

2. Description of the Related Art A chest electrode for measuring an electrocardiogram is (1):
4th intercostal right sternum, (2): 4th intercostal left sternum, (3):
(2) Midpoint on the line connecting (4), (4): Intersection between the left clavicle midline and the fifth rib, (5): Same level as (4) on the left anterior axillary line,
(6): Set on the left mid-axillary line to 6 points at the same level as (4).

Referring to FIG. 3, a conventional biomedical electrode is a multi-cord (60) connected to an electrocardiograph, a distributor (62), a cord (64) branched in the distributor (62), and respective cords. A plug (66) connected to the end of (64) and a suction electrode (7
0). The cord (64) and the plug (66) are color-coded into six predetermined colors such as red, yellow, and green so that the electrocardiogram measurement points (1) to (6) are not mixed up.

As shown in the enlarged cross-sectional view of the circle in the figure, the suction electrode (70) is composed of a rubber ball (72) and a hemispherical metal electrode (74), and the total weight is 10 g. This suction electrode (70) keeps contact with the electrocardiogram measurement point by sucking the skin with the rubber ball (72), and the electrocardiogram is measured through the jack (76) fixed to the metal electrode (74). It In addition, in the usual electrocardiographic measurement, since the electric potentials of the four limbs are also measured in addition to the above-mentioned six chest measurement points, four from the distributor (62).
Codes for limb electrodes (not shown) are also derived.

The above-mentioned electrode for a living body is aspirated by placing the distributor (62) in the vicinity of the electrocardiogram measurement point of the subject and then referring to the colors of the color-coded code (64) and plug (66). Electrodes (70) are set at the electrocardiogram measurement points (1) to (6), and electrocardiogram measurement is performed. At this time, in order to sufficiently suppress EMG generation or reference potential fluctuation, it is necessary to stabilize the mind and posture of the subject, and the suction electrode (70) that does not cause discomfort to the subject. Skill is required to attach the cord, and to crawl the cord (64) around the subject and the multi cord (60).

[0006]

Due to its shape and function, the conventional biomedical electrode distributor (62) maintains its position on the human body against the tension of the multi-cord (60) connected to the electrocardiograph. Therefore, maintaining the contact between the suction electrode (70) and the human skin depends on the suction force of the rubber ball (72) of the suction electrode (70). Therefore, the conventional biomedical electrode has a problem in that the suction force of the rubber ball (72) of the suction electrode (70) makes the subject uncomfortable, and the electrocardiogram measurement cannot be performed well. Also, for some reason the distributor (62), code (6
When the position of 4) and the multi-cord (60) on the human body changes, the consciousness of returning to the original position acts on the subject, and muscle radio waves may be mixed in.

Further, since a large suction force is required for the suction electrode (70), the structure and weight of the suction electrode (70) are designed to be large. Therefore, the conventional biomedical electrode is a suction electrode during storage.
(70) is entangled at the tip of the cord (64), which causes a problem of impairing operability when measuring an electrocardiogram. As one of the solutions for preventing the entanglement of the chest electrode, a method of using a relatively lightweight and small-sized adhesive electrode is conceivable. However, due to the above-mentioned reason, the adhesive force between the adhesive electrode and the human skin is There is a new problem that it is difficult to maintain contact between the two, and it is difficult to clean and manage the adhesive gel during storage.

[0008]

The present invention is mainly characterized in that an electrode holder for an adhesive electrode is formed with a long side size equal to the maximum interval of electrocardiogram measurement points by using a flexible resin. Further, the main feature of the present invention is that an electrode holder for an adhesive electrode is formed in a substantially similar shape to the line connecting the electrocardiogram measurement points with a soft resin.

[0009]

The structure of the present invention in which the electrode holder is formed in a long side size equal to the maximum interval of the electrocardiogram measurement points by the flexible resin makes the contact between the electrode holder and human skin good, and the contact force is relatively low. Allows the use of adhesive electrodes. Also,
The length of the cord connecting the electrode holder and the adhesive electrode is minimized.

The structure of the present invention in which the electrode holder for the adhesive electrode is formed in a shape substantially similar to the line connecting the electrocardiogram measurement points with the flexible resin is the minimum length of the cord connecting the electrode holder and the adhesive electrode. To be long.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention and one embodiment of the present invention will be described with reference to FIGS. Note that FIG. 1 shows an electrode holder (10), which is the main structure of the biomedical electrode of the present invention, and a part of the thoracic skeleton of a human body (shaded area). The chest electrodes for measuring the electrocardiogram are (1): 4th as shown by the circled numbers in FIG.
Right intercostal sternum, (2): Left intercostal sternum, (3): (2)
(4): Midpoint on line connecting (4), (4): Intersection between left midclavicle and fifth rib, (5): Same level as (4) on left anterior axillary line, (6): On left midaxillary line ( It is set to 6 points at the same level as 4).

The electrode holder (10) of the biomedical electrode of the present invention
Is a material that does not cause dermatitis, etc., and is made of a flexible material, for example, a resin such as silicone rubber or vinyl chloride, and the long side thereof has a size approximately equal to the interval between the electrocardiogram measurement points (1) and (6). The short side is formed to have a size slightly larger than the diameter of the adhesive electrode (20), and a thickness sufficient to withstand the tension of the multi-cord (14) connected to the electrocardiograph, for example, 100 g. It The multi-cord (14) connected to the electrocardiograph is introduced into the electrode holder (10) at a substantially central side surface. This multi-cord (14) is branched inside the electrode holder (10),
0) is introduced from the long side to the outside with a minimum length and is connected to each corresponding adhesive electrode (20).

A plurality of electrodes for supporting and storing the adhesive electrode (20) on the upper surface of the electrode holder (10) during non-measurement or non-use and protecting the adhesive gel (not shown) of the adhesive electrode (20) from contamination. Pads (12) are formed. Note that the adhesive gel of the adhesive electrode (20) may be changed to the pad (1) of the electrode holder (10) depending on the combination of the composition of the adhesive gel of the adhesive electrode (20) and the material of the electrode holder (10).
If it is predicted that the adhesive will adhere to the inside of the electrode 2) more than necessary and peel off from the adhesive electrode 20, the pad 1
2) The surface is mirror-finished or it is made substantially mirror-finished by applying an appropriate paint. It is also effective to make the adhesive gel adhesive surface of the adhesive electrode (20) rough.

The biomedical electrode of the present invention comprises an electrode holder (1
0) is placed on the skin adjacent to the electrocardiogram measurement points (1) to (6), and then the pad (12) of the electrode holder (10).
The adhesive electrode (20) that is adhesively supported on is removed from the pad (12) and set at the nearest electrocardiographic measurement points (1) to (6) to perform electrocardiographic measurement. Although FIG. 1 shows the substantially crank-shaped electrode holder (10) similar to the line connecting the electrocardiogram measurement points (1) to (6), the present invention is not limited to the outer shape.

The biomedical electrode of the present invention constructed as described above comprises a multi-cord (14) connected to an electrocardiograph and an adhesive electrode (2).
Since the electrode holder (10) exists between 0), detachment of the adhesive electrode (20) from the skin due to the tension of the multi-cord (14) is prevented at the time of measurement. When the electrode holder (10) is made of a more flexible material that fits the chest shape, the electrode holder (10) is particularly thin because the drag force against the tension of the multi-cord (14) increases.
It can be lightweight. In that case, the weight of the electrode holder (10) does not give the subject an uncomfortable feeling, and thus a more reliable electrocardiographic measurement can be performed.

Further, the adhesive electrode (20) is set at the nearest electrocardiogram measurement points (1) to (6) to be used for measurement, and therefore the adhesive electrode (2) led out from the electrode holder (10).
The cord 18 connected to 0) only needs to have a length from the nearest electrocardiogram measurement point (1) to (6), does not need an unnecessary length, and may be a minimum length in use. . Furthermore, in combination with the use of the low-weight adhesive electrode (20), the entanglement of the adhesive electrode (20) is prevented and the adhesive electrode (2) is
Since it is sufficient to set 0) to the nearest electrocardiogram measurement points (1) to (6), there is an advantage that operability is improved.

Furthermore, since the adhesive electrode (20) is adhesively supported and stored on the pad (12) on the upper surface of the electrode holder (10) during non-measurement or non-use, contamination of the adhesive gel of the adhesive electrode (20),
Metamorphosis is prevented. Next, an embodiment of the present invention will be described with reference to FIG. Referring to the figure, the biomedical electrode of the present invention is a substantially crank-shaped electrode holder (10) similar to the line connecting the electrocardiogram measurement points (1) to (6), and the long side of the electrode holder (10). It is composed of a plurality of adhesive electrodes (20) connected to a cord (18) derived from.

The electrode holder (10) is made of silicone rubber by casting, and has a long side of 250 mm, a short side of 25 mm, and a thickness of 6 mm.
The multi-cord (14) having a weight of hundreds of tens of grams and introduced to the central side surface of the long side is branched by the distributor (16) (shown by a broken line) inside the electrode holder (10) and is shown by a broken line in the same figure. As described above, the cords (18) are connected to the respective adhesive electrodes (20). The depth of the electrode holder (10) is about 0.
5mm, 25mmφ bottom surface with mirror finish pad
A plurality of (12) are formed.

As shown in an enlarged cross-sectional view of the inside of the circle of FIG. 2, the adhesive electrode (20) is partially hollow with a gripping portion (24) formed,
It is composed of a cylindrical outer electrode box (22), an electrode plate (26) to which one end of the cord (18) is connected, and a conductive adhesive gel (28), and the total weight is several g or less. At the time of electrocardiogram measurement, this adhesive electrode (20) is removed from the pad (12) of the storage destination and set at the electrocardiogram measurement point of the human body using the adhesive property of the adhesive gel (28) to measure the electrocardiogram. . In addition, at the time of non-measurement, it is adhered and stored on the pad (12) of the original electrode holder (10).

The outer electrode box 22 is made of plastic and has a maximum diameter of approximately 23 mmφ. Also, the electrode plate (26)
Is formed by pressing a copper alloy thin plate containing nickel and zinc into a circular shape, and after connecting one end of the cord (18), it is adhered to the hollow portion of the electrode outer case (22). The adhesive gel (28) adhesive surface of the electrode plate (26) is roughened if necessary to improve the adhesiveness between the electrode plate (26) and the adhesive gel (28).

The pressure-sensitive adhesive gel (28) is formed by pressing a known pressure-sensitive adhesive gel sheet containing gelatin, glycerin, sodium alginate or the like as a main agent in a circular shape, and by utilizing the pressure-sensitive adhesive property, it is bonded to the electrode plate (26). . In the present embodiment having the above-mentioned configuration, the electrode holder (10) has a substantially crank shape similar to the line connecting the electrocardiogram measurement points (1) to (6), and thus is derived from the electrode holder (10) and the adhesive electrode (20). The cord (18) connected to the can be minimized and of equal length, the entanglement of the adhesive electrode (20) is prevented, and the adhesive electrode (20) is placed at the nearest ECG measurement point.
Since it only needs to be set in (1) to (6), it has an advantage of extremely improved operability.

Since the electrode holder (10) is made of silicone rubber and the pad (12) is mirror-finished, the adhesive gel (28) of the adhesive electrode (20) is stored in the electrode holder during storage.
The obstacle that adheres to the pad (12) of (10) and peels off from the electrode plate (26) is prevented. In addition, since the pad (12) is formed in a shallow concave shape, there is also an advantage that the position of the pad (12) is clear.

Furthermore, since the adhesive gel (28) is stored in a state of being adhered to the bottom surface of the pad (12) during non-measurement, the adhesive gel (28) is prevented from being transformed, contaminated and damaged. Although the present invention and one embodiment of the present invention have been described above, the present invention can be modified by using a plug for connecting the adhesive electrode (20) and the electrode holder (10). Also, the pad (12) of the electrode holder (10)
Can also be formed in a planar shape. Furthermore, a jack for connecting to the multi-cord (14) can be embedded in the electrode holder (10).

[0024]

As described above, in the biomedical electrode of the present invention, since the electrode holder formed of a flexible material exists between the multi-cord connected to the electrocardiograph and the adhesive electrode, the multi-cord tension causes The detachment of the adhesive electrode from the skin is prevented. In addition, since the cords that are led out from the electrode holder and connected to the adhesive electrode can have a minimum equal length, entanglement of the adhesive electrode (20) can be prevented and the adhesive electrode can be used as the nearest ECG measurement point. Since it only needs to be set, it has the advantage of improving operability.

Further, since the adhesive electrode is adhesively supported and stored on the pad on the upper surface of the electrode holder during non-measurement or non-use, the adhesive gel of the adhesive electrode (20) is prevented from being contaminated and denatured. Furthermore, since the electrode holder can be formed to be lightweight, the weight of the electrode holder does not make the subject feel uncomfortable,
Highly reliable ECG measurement can be performed.

[Brief description of drawings]

FIG. 1 is a diagram illustrating a method of using the biological electrode of the present invention.

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

FIG. 3 is a plan view of a conventional example.

[Explanation of symbols]

 10 Electrode Holder 12 Pad 14 Multi Code 16 Distributor 18 Code 20 Adhesive Electrode 22 Outer Box 24 Grip 26 Electrode Plate 28 Adhesive Gel

Claims (5)

(57) [Claims] 1. An electrode holder formed of a flexible resin, having a long side size equal to the maximum distance between electrocardiogram measurement points, and having a plurality of pads formed at positions corresponding to the electrocardiogram measurement points, and an electrocardiograph. A multi-cord that connects the electrode holder, an electric cord that is connected to each cord of the multi-cord, branches in the electrode holder in a pad-corresponding manner, and the branch destination is led to a predetermined length outside the corresponding pad, Connected to the external lead-out end of the electric cord, housed in the corresponding pad when not measuring, taken out from the corresponding pad when measuring, and adhered to the living body. A biomedical electrode device comprising an electrode. 2. An electrode holder formed of a flexible resin, having a shape substantially corresponding to the line connecting the electrocardiogram measurement points, and having a plurality of pads formed at positions corresponding to the electrocardiogram measurement points; A multi-cord that connects to the electrode holder, an electric cord that is connected to each cord of this multi-cord, branches in the electrode holder in a pad-corresponding manner, and the branching destination is led to the outside of the corresponding pad by a predetermined length, and each electric cord. A plurality of adhesive electrodes corresponding to the pads, which are connected to the externally derived tip of the cord, are accommodated in the corresponding pads when not measuring, and are taken out from the corresponding pads when measuring and adhere to the living body, using a conductive adhesive gel. And a biomedical electrode device comprising: 3. The biomedical electrode device according to claim 1, wherein the pad surface is substantially a mirror surface. 4. The biomedical electrode device according to claim 1, wherein a surface of the electrode plate to which the adhesive gel of the adhesive electrode is connected is roughened. 5. The biomedical electrode device according to claim 1, wherein the electrode holder is made of silicon rubber (or vinyl chloride).