JP3228648U - Distributor and distributor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a distributor and a distributor for an electrocardiogram, which can prepare a working environment for acquiring an electrocardiogram with a plurality of electrocardiographs and eliminate a complicated state. SOLUTION: The distribution device 1 distributes an electric signal for an electrocardiogram Ec to a plurality of electrocardiographs E, and has a plurality of electrodes 4 and a plurality of input side electric cords 5 connected to each of the plurality of electrodes 4. A distributor 2 to which a plurality of input-side electric cords 5 are connected, and the distributor 2 includes a plurality of input-side terminal portions 8 electrically connected to each of the plurality of input-side electric cords 5. A plurality of output side terminal units 9 electrically connected to a plurality of input side terminal units 8 are provided, and the plurality of output side terminal units 9 are divided into a plurality of terminal groups corresponding to a plurality of electrocardiographs E. Each of the plurality of input side terminal portions 8 is electrically connected to each of the plurality of terminal groups. [Selection diagram] Fig. 2

Description

The present invention relates to a distributor and a distributor that distributes an electric signal for an electrocardiogram to a plurality of electrocardiographs.

Various devices for displaying or printing an electrocardiogram are known (see Patent Document 1 and Patent Document 2). A plurality of electric cords connected to a plurality of electrodes are connected to this type of device. For example, in the case of a standard 12-lead ECG, limb electrodes attached to the left and right limbs (4 locations in total) and chest electrodes attached to 6 locations on the chest are used as electrodes. For example, among the limb electrodes, the electrode attached to the right foot is used as a reference, and an electrocardiogram can be obtained by acquiring the potential difference between each electrode.

Jikkenhei No. 1-84608 Special Table 2019-534735

When performing an operation, an examination, or the like on a subject such as a patient, an electrocardiogram may be acquired by each of a plurality of devices having a function as an electrocardiograph. In this case, each device independently acquires an electric signal from the subject. Therefore, each device requires a plurality of electrodes to be attached to the subject, and further, electric cords connected to the plurality of electrodes are intricately present, so that a work environment for performing a treatment or an inspection is performed. Was very complicated and easy to get.

An object of the present invention is to provide a distributor and a distributor for an electrocardiogram, which can prepare a working environment for acquiring an electrocardiogram with a plurality of electrocardiographs and eliminate a complicated state.

The present invention is a distribution device that distributes an electric signal for an electrocardiogram to a plurality of electrocardiographs, and is connected to a plurality of electrodes, a plurality of electric cords connected to each of the plurality of electrodes, and a plurality of electric cords. The distributor includes a plurality of input side terminals electrically connected to each of a plurality of electric cords, and a plurality of output sides electrically connected to a plurality of input side terminals. A terminal unit is provided, and the plurality of output side terminal units are divided into a plurality of terminal groups corresponding to a plurality of electrocardiographs, and each of the plurality of input side terminal units is electrically connected to each of the plurality of terminal groups. Is connected.

The distributor of this distributor is provided with a plurality of output side terminal portions divided into a plurality of terminal groups corresponding to a plurality of electrocardiographs, and each of the plurality of input side terminal portions is of a plurality of terminal groups. It is electrically connected to each. The plurality of terminals correspond to different electrocardiographs. Therefore, the electric signal for the electrocardiogram obtained from the common electrode can be distributed to a plurality of different electrocardiographs, and the number of electrodes and electric cords can be reduced for simplification. As a result, according to the above-mentioned distributor or distributor, it is possible to prepare a working environment for acquiring an electrocardiogram with a plurality of electrocardiographs and eliminate a complicated state.

The plurality of electrodes may include a plurality of limb electrodes, a plurality of chest electrodes, and one or more auxiliary reference electrodes for obtaining an auxiliary potential that assists the reference potential obtained by one limb electrode. .. If an attempt is made to distribute an electric signal obtained from a common electrode to a plurality of electrocardiographs, the output of the potential difference from the reference potential may become unstable. However, by providing one or a plurality of auxiliary reference electrodes, it is possible to obtain an auxiliary potential that assists the reference potential, which is advantageous in increasing the reliability of the electrocardiogram acquired by the plurality of electrocardiographs.

Of the plurality of input-side terminal portions, the auxiliary terminal portion connected to the auxiliary reference electrode may be electrically connected to each of the plurality of terminal groups. A plurality of output terminal portions belonging to one terminal group are connected to one electrocardiograph via an output side electric cord. Since the auxiliary terminal part is electrically connected not only to one terminal group but also to each of a plurality of terminal groups, the reliability of the electrocardiogram acquired not only by one electrocardiograph but also by multiple electrocardiographs. It is advantageous to enhance the sex.

The distributor includes a housing provided with an input side terminal portion and an output side terminal portion, and a circuit board housed in the housing and electrically connecting the input side terminal portion and the output side terminal portion. May be good. The input side terminal portion and the output side terminal portion can be electrically connected securely and in a stable state via the circuit board.

Identification information that distinguishes each of the plurality of input-side terminal portions may be displayed on the housing. Each of the plurality of electrodes has a role, and the input side terminal portion for connecting the plurality of electrodes can be visually distinguished, so that the handleability is improved.

The identification information may be at least one of characters, symbols, colors, and patterns. At least one of letters, symbols, colors and patterns can be easily distinguished visually, and more easily by a combination of a plurality of kinds, for example, a combination of letters and colors.

The identification information includes at least a color, and the plurality of electric cords may have the same color as the color that distinguishes the input side terminal portion to be connected from the other input side terminal portions. When connecting the electric cord to the input side terminal part, the input side terminal part to be connected becomes clear, and the handleability is improved.

Connection information indicating the connection relationship between each of the plurality of output-side terminal portions and the input-side terminal portion may be displayed on the housing. Since the connection relationship between the plurality of output side terminal portions and the input side terminal portion can be visually recognized, the handleability is improved.

The electric circuit mounted on the circuit board may be provided with a backflow regulation unit that prevents a high current from flowing between the electrodes due to the backflow of current from the output side terminal portion. By providing the backflow regulation unit, it is possible to prevent a high voltage from being applied between the electrodes. Further, by providing a backflow regulation unit provided with a constant voltage diode that maintains a constant voltage between the electrodes, the backflow regulation unit can be realized with a simple configuration.

Further, the present invention is a distributor that distributes an electric signal for an electrocardiogram to a plurality of electrocardiographs, and has a plurality of input side terminal portions electrically connected to each of the plurality of electrodes via an electric cord. It is provided with a plurality of output side terminals electrically connected to a plurality of input side terminals, and the plurality of output side terminals are divided into a plurality of terminal groups corresponding to a plurality of electrocardiographs. Each of the plurality of input side terminal portions is electrically connected to each of the plurality of terminal groups.

According to this distributor, it is possible to prepare a working environment for acquiring an electrocardiogram with a plurality of electrocardiographs and eliminate a complicated state.

Further, the plurality of electrodes are one or more auxiliary reference electrodes for obtaining a plurality of limb electrodes, a plurality of chest electrodes, and an auxiliary potential for assisting the reference potential obtained by one limb electrode, and a plurality of inputs. Of the side terminal portions, the auxiliary terminal portion connected to the auxiliary reference electrode may be electrically connected to each of the plurality of terminal groups. By assisting the reference potential with one or a plurality of auxiliary reference electrodes, a stable potential difference can be obtained, which is advantageous in improving the reliability of the electrocardiogram acquired by a plurality of electrocardiographs.

Further, it may be provided with a housing provided with an input side terminal portion and an output side terminal portion, and a circuit board housed in the housing and electrically connecting the input side terminal portion and the output side terminal portion. .. The input side terminal portion and the output side terminal portion can be electrically connected securely and in a stable state via the circuit board.

According to the present invention, it is possible to prepare a working environment for acquiring an electrocardiogram with a plurality of electrocardiographs and eliminate a complicated state.

FIG. 1 is an explanatory diagram schematically showing a distribution device in a state in which a plurality of electrodes are attached to a subject and electrical signals obtained from the plurality of electrodes are distributed to a plurality of electrocardiographs. FIG. 2 is a perspective view mainly showing the distribution device. FIG. 3 is a plan view of the distributor. FIG. 4 is a schematic view schematically showing an electric circuit mounted on a circuit board.

Hereinafter, embodiments of the distribution device according to the present invention will be described in detail with reference to the drawings.

First, an electrocardiograph E that acquires an electrocardiogram Ec will be described. The electrocardiograph E (also referred to as an ECG device) assumed in the present embodiment includes a wide range of devices having a function of acquiring an electrocardiogram Ec, from a small movable device to a large device installed at a predetermined position. Widely included. Further, the output method of the electrocardiogram Ec in the electrocardiograph E is not limited to the two-dimensional monitor display and printing, and may be a 3D display or the like. For example, the electrocardiograph E is not limited to the basic electrocardiograph E that monitors and prints the body surface electrocardiogram, but also a polygraph that monitors the body surface electrocardiogram, the intracardiac electrocardiogram, the blood pressure, and the oxygen saturation. It may be a device that displays the electrical flow in the heart from the indwelling catheter as a 3D image, various electrophysiological examination devices that display the body surface electrocardiogram and the electric potential of the catheter placed in the heart.

The distribution device 1 includes a distributor 2 that distributes an electric signal for an electrocardiogram Ec obtained from a subject H such as an examinee or a patient to a plurality of electrocardiographs E. A plurality of output-side electric cords 3 are connected to the distributor 2. A carbon electric wire can be used as the output side electric cord 3. Each of the plurality of output-side electric cords 3 is connected to a plurality of electrocardiographs E. As the output side electric cord 3, a vinyl cord in which an electric wire is coated with a resin or the like may be used.

In the present embodiment, ten output-side electric cords 3 are connected to one electrocardiograph E as one unit. In addition, in FIG. 1, for convenience, it is described that five output side electric cords 3 are connected to one electrocardiograph E as one unit. Further, in the present embodiment, an embodiment in which an electric signal is distributed from the distributors 2 to 4 electrocardiographs E is illustrated, but even if the number of electrocardiographs E is 2, 3, or 5 or more. Good.

As shown in FIGS. 1 and 2, the distribution device 1 includes a plurality of electrodes 4 mounted on the subject H and a plurality of input-side electric cords 5 (an example of an electric cord) connected to each electrode 4. ) And. For the input side electric cord 5, for example, a carbon electric wire can be used. An electrode 4 is electrically connected to one end of the input side electric cord 5, and a connector 51 for connecting to the distributor 2 is attached to the other end. The electrode 4 and the input side electric cord 5 may be a disposable type or a reusable type. Further, as the input side electric cord 5, a vinyl cord in which an electric wire is coated with a resin or the like may be used.

The plurality of electrodes 4 include limb electrodes 4a, 4b, 4c, 4d attached to the right wrist, left wrist, left ankle, and right ankle, and chest electrodes 4x attached to six locations on the chest. .. Of the limb electrodes 4a to 4d, the electrode attached to the right ankle is a ground electrode, and is a reference electrode 4c (also referred to as a reference electrode) attached to obtain a reference potential. Further, the plurality of electrodes 4 are additionally provided with an auxiliary reference electrode 4e which is additionally attached to the right foot. The auxiliary reference electrode 4e obtains an auxiliary potential that assists the reference potential obtained by the reference electrode 4c. The plurality of electrodes 4 may be provided with a structure for mounting on a predetermined portion of the subject H, for example, an adhesive portion.

The distributor 2 includes a rectangular housing 6 in a plan view and a circuit board 7 housed in the housing 6. The housing 6 is provided with a plurality of input side terminal portions 8 to which a plurality of input side electric cords 5 are connected, and a plurality of output side terminal portions 9 to which a plurality of output side electric cords 3 are connected. .. An electric circuit 11 (see FIG. 4) that electrically connects the input side terminal portion 8 and the output side terminal portion 9 is mounted on the circuit board 7.

As shown in FIGS. 2 and 3, the plurality of input side terminal portions 8 are arranged side by side in a vertical row, and 11 input side terminal portions 8 are provided according to the number of electrodes 4. .. Of the plurality of 11 input-side terminal portions 8 arranged in a row, one input-side terminal portion 8 at the end is arranged at a distance from the other 10 input-side terminal portions 8. One input side terminal portion 8 at this end is an auxiliary terminal portion 8x connected to the auxiliary reference electrode 4e. Further, the input side terminal portion 8 adjacent to the auxiliary terminal portion 8x is a reference terminal portion 8a connected to the reference electrode 4c.

The plurality of output-side terminal portions 9 are arranged separately in four (plural) terminal groups 10 according to the electrocardiograph E to be connected. One terminal group 10 includes 10 output-side terminal portions 9 arranged vertically, and is arranged so as to form four rows of terminal groups 10. The terminal group 10 in each row is connected to one electrocardiograph E.

The housing 6 of the distributor 2 includes a bottom portion 61 mounted on an installation table or the like, a side wall portion 62 surrounding the bottom portion 61, and a lid portion 63 facing the bottom portion 61. The lid portion 63 includes a back surface facing the bottom portion 61 and a front surface 63a on the opposite side to the back surface, and a circuit board 7 is attached to the back surface. On the surface 63a of the lid portion 63, identification information for distinguishing each of the plurality of input side terminal portions 8 is displayed.

As shown in FIG. 3, on the lid 63, as an example of the identification information, the characters "RL", "RA", "V1" to "V6", "LA", "LL", and "RL" "Ref" is displayed. Here, "RL" means a reference terminal portion 8a connected to a limb electrode (reference electrode 4c) attached to the right foot. Further, "RA" is an input side terminal portion 8 connected to the limb electrode 4a mounted on the right hand, "LA" is an input side terminal portion 8 connected to the limb electrode 4b mounted on the left hand, and "LL" is an input side terminal portion 8. It means the input side terminal portion 8 connected to the limb electrode 4d mounted on the left foot. Further, "RL Ref" means an auxiliary terminal portion 8x connected to the auxiliary reference electrode 4e mounted on the right foot. Further, "V1" to "V6" mean that they are input side terminal portions 8 connected to the chest electrodes 4x, respectively.

Further, a different color is displayed on the lid 63 as another example of the identification information. Specifically, the input side terminal portions 8 excluding the auxiliary terminal portion 8x are arranged at the ends of the strip-shaped pattern 64 having the same outer shape as each other. The plurality of strip patterns 64 have at least different colors of adjacent strip patterns 64 and can be distinguished from each other. In FIG. 3, this difference in color is expressed by a difference in patterns such as hatching. Further, the auxiliary terminal portion 8x is arranged in the pattern 65 in which the middle of the band-shaped pattern 64 is cut diagonally, and is distinguished from other band-shaped patterns 64. Although the identification information of the present embodiment is a combination of characters and colors, it may be a simple substance (a kind) such as characters, symbols, colors, and patterns, and may be a combination thereof.

The band-shaped pattern 64 also functions as connection information indicating the connection relationship between each of the plurality of output side terminal portions 9 and the input side terminal portion 8. For example, the reference terminal portion 8a connected to the reference electrode 4c is arranged in the band-shaped pattern 64 with the letters “RL”, and the band-shaped pattern 64 extends while being bent diagonally in the middle. It has reached the four output side terminal portions 9. The four output-side terminal portions 9 reached by the band-shaped pattern 64 are all connected to the reference electrode 4c via a common reference terminal portion 8a. The four output-side terminal portions 9 belong to different terminal groups 10, and are connected to different electrocardiographs E. That is, this single band-shaped pattern 64 shows the connection relationship between the reference terminal portion 8a and the four output-side terminal portions 9 connected to different electrocardiographs E. Similarly, the other band-shaped pattern 64 also functions as connection information indicating the connection relationship between each of the plurality of output side terminal portions 9 and the input side terminal portion 8.

The input-side electric cord 5 according to the present embodiment is color-coded, and each has a color scheme that matches the color-coding of the strip pattern 64. For example, the color of the input side electric cord 5 connected to the reference electrode 4c is the same color as the band pattern 64 at the place where the reference terminal portion 8a is arranged. That is, the plurality of input-side electric cords 5 have the same color as the color that distinguishes the input-side terminal portion 8 to be connected from the other input-side terminal portions 8. The same color in this case is the identification color of the input side terminal portion 8 to be visually connected (color of the strip pattern 64) among the identification colors of the plurality of input side terminal portions 8 (color of the band pattern 64). It means that it is the closest color to.

As shown in FIG. 4, the plurality of input side terminal portions 8 and the plurality of output side terminal portions 9 are electrically connected by an electric circuit 11 mounted on the circuit board 7. FIG. 4 is a diagram schematically showing the electric circuit 11, and some wirings are omitted. Further, in FIG. 4, symbols such as resistors and diodes are omitted for convenience. For example, the reference terminal portion 8a is branched into four and each is electrically connected to the output side terminal portion 9. Further, the auxiliary terminal portion 8x connected to the auxiliary reference electrode 4e is electrically connected to the reference terminal portion 8a to assist the reference potential obtained from the reference electrode 4c. Further, the input side terminal portion 8b connected to the limb electrode 4a mounted on the right hand is branched into four, and each is electrically connected to the output side terminal portion 9.

The current from each output side terminal 9 is between the lead wire connecting the reference terminal 8a and each output side terminal 9 and the lead wire connecting the input side terminal 8b and each output side terminal 9. A backflow control unit 12 is provided to prevent a high current from flowing between the reference electrode 4c and the limb electrode 4a due to the backflow of the above. The backflow regulation unit 12 is provided with, for example, a constant voltage diode, and maintains a constant voltage (low voltage) between the reference electrode 4c and the limb electrode 4a to guarantee safety. As the constant voltage diode, for example, a bidirectional Zener diode or the like can be arranged.

Although omitted in FIG. 4, each input side terminal portion 8 connected to the other limb electrodes 4b and 4d and the chest electrode 4x is electrically connected to the corresponding output side terminal portion 9. There is. Then, between the lead wire connecting the reference terminal portion 8a and each output side terminal portion 9 and the lead wire connecting each input side terminal portion 8 and each output side terminal portion 9, the backflow regulation unit is as described above. 12 is provided.

Next, the operation and effect of the distribution device 1 according to the present embodiment will be described. First, as a general explanation of the electrocardiograph E, an electrocardiogram Ec can be obtained by repeatedly contracting and relaxing the heart and measuring the electricity generated at that time. There are two types of induction methods for this electrocardiogram Ec: bipolar lead and unipolar lead. For standard 12-lead ECG, standard limb leads, unipolar limb leads, and unipolar chest leads are measured. In order to measure these, it is necessary to mount a plurality of electrodes 4 at predetermined positions of the subject H. Specifically, the limb electrodes 4a to 4d are attached to the left and right wrists and the left and right ankles, and the auxiliary reference electrode 4e is attached to the right foot. In addition, the six chest electrodes 4x are attached to predetermined positions with respect to the heart.

The distribution device 1 includes an input-side electric cord 5 connected to each electrode 4 and a distributor 2 to which the input-side electric cord 5 is connected. The distributor 2 includes a plurality of output-side terminal portions 9, and the plurality of output-side terminal portions 9 are divided into a plurality of terminal groups 10 corresponding to the plurality of electrocardiographs E. Further, each of the plurality of input side terminal portions 8 is electrically connected to each of the plurality of terminal groups 10. That is, according to the distributor 1 or the distributor 2, the electric signals obtained from the common plurality of electrodes 4 can be distributed to the plurality of electrocardiographs E, and the number of the electrodes 4 and the input side electric cord 5 is reduced to make it simple. Can be achieved. As a result, according to the distributor 1 or the distributor 2, the working environment for acquiring the electrocardiogram Ec with the plurality of electrocardiographs E can be prepared, and the complicated state can be eliminated.

Further, for example, when an attempt is made to distribute an electric signal obtained from a common electrode to a plurality of electrocardiographs, the output of the potential difference from the reference potential may become unstable. However, in the present embodiment, the auxiliary reference electrode 4e is provided, and the auxiliary reference electrode 4e can obtain an auxiliary potential that assists the reference potential. Therefore, the reliability of the electrocardiogram Ec acquired by a plurality of electrocardiographs E is reliable. It becomes advantageous to increase. The auxiliary reference electrode 4e is not limited to a single unit, and may be a plurality. Similarly, the auxiliary terminal portion 8x is not limited to a single unit, and may be a number (plurality) corresponding to a plurality of auxiliary reference electrodes 4e.

Further, the auxiliary terminal portion 8x according to the present embodiment is electrically connected to each of the plurality of terminal groups 10. A plurality of output-side terminal portions 9 belonging to one terminal group 10 are connected to one electrocardiograph E via an output-side electric cord 3. Since the auxiliary terminal portion 8x is electrically connected not only to one terminal group 10 but also to each of a plurality of terminal groups 10, it is acquired not only by one electrocardiograph E but also by a plurality of electrocardiographs E. It is advantageous to increase the reliability of the electrocardiogram Ec to be performed.

Further, the distributor 2 includes a housing 6 and a circuit board 7 housed in the housing 6, and securely connects the input side terminal portion 8 and the output side terminal portion 9 via the circuit board 7. Moreover, it can be electrically connected in a stable state.

Further, on the housing 6, characters and a strip pattern 64 are displayed as identification information for distinguishing each of the plurality of input side terminal portions 8. Each of the plurality of electrodes 4 has a role, and the input side terminal portion 8 connecting the plurality of electrodes 4 can be visually distinguished, so that the handleability is improved. This identification information can be easily visually distinguished, for example, by at least one of characters, symbols, colors, and patterns, and more easily by a combination of a plurality of types, for example, a combination of characters and colors. Can be distinguished.

Further, the band-shaped pattern 64 is color-coded, and the plurality of input-side electric cords 5 have the same color as the identification color of the band-shaped pattern 64 that distinguishes the input-side terminal portion 8 to be connected from the other input-side terminal portions 8. .. As a result, when the input-side electric cord 5 is connected to the input-side terminal portion 8, the input-side terminal portion 8 to be connected becomes clear, and the handleability is improved.

The band-shaped pattern 64 also functions as connection information indicating the connection relationship between each of the plurality of output side terminal portions 9 and the input side terminal portion 8. The band-shaped pattern 64 makes it possible to visually recognize the connection relationship between the plurality of output-side terminal portions 9 and the input-side terminal portions 8, so that the handleability is improved.

Further, the electric circuit 11 according to the present embodiment includes a backflow regulation unit 12, and can prevent a high voltage from being applied between the electrodes 4. Further, by forming the backflow regulation unit 12 provided with the constant voltage diode that maintains the constant voltage between the electrodes 4, the backflow regulation unit 12 can be realized with a simple configuration.

Although the distributor and the distributor according to the present invention have been described above with reference to the embodiments, the present invention is not limited to these embodiments, and may be other embodiments. For example, the shape of the housing of the distributor is not limited to a rectangle, and may be a circle or the like. Further, the number of electrodes is not limited to 10, and the number of electrocardiographs is not limited to 4. If the reference potential obtained from the reference electrode is stable, the auxiliary reference electrode can be omitted.

1 ... Distributor, 2 ... Distributor, 4 ... Electrode, 4a-4d ... Extremity electrode, 4c ... Reference electrode, 4x ... Chest electrode, 4e ... Auxiliary reference electrode, 5 ... Input side electric cord (electric cord), 6 ... Housing, 7 ... circuit board, 8 ... input side terminal part, 8a ... reference terminal part, 8x ... auxiliary terminal part, 9 ... output side terminal part, 10 ... terminal group, 11 ... electric circuit, 12 ... backflow regulation part, 64 ... Strip pattern (identification information), E ... Electrocardiograph, Ec ... Electrocardiogram, H ... Subject.

Claims (13)

It is a distribution device that distributes electrical signals for electrocardiogram to multiple electrocardiographs.
With multiple electrodes,
A plurality of electric cords connected to each of the plurality of electrodes,
A distributor to which the plurality of electric cords are connected is provided.
The distributor
A plurality of input side terminals electrically connected to each of the plurality of electric cords, and
A plurality of output side terminal portions electrically connected to the plurality of input side terminal portions are provided.
The plurality of output side terminal portions are divided into a plurality of terminal groups corresponding to the plurality of electrocardiographs.
A distribution device in which each of the plurality of input-side terminal portions is electrically connected to each of the plurality of terminal groups. The plurality of electrodes include a plurality of limb electrodes, a plurality of chest electrodes, and one or a plurality of auxiliary reference electrodes for obtaining an auxiliary potential that assists the reference potential obtained by the one limb electrode. The distribution device according to claim 1. The distribution device according to claim 2, wherein among the plurality of input-side terminal portions, the auxiliary terminal portion connected to the auxiliary reference electrode is electrically connected to each of the plurality of terminal groups. The distributor is a circuit that is housed in the housing provided with the input side terminal portion and the output side terminal portion and electrically connects the input side terminal portion and the output side terminal portion. The distribution device according to any one of claims 1 to 3, further comprising a substrate. The distribution device according to claim 4, wherein identification information for distinguishing each of the plurality of input side terminal portions is displayed on the housing. The distribution device according to claim 5, wherein the identification information is at least one of characters, symbols, colors, and patterns. The identification information includes at least a color.
The distribution device according to claim 6, wherein the plurality of electric cords have the same color as the color that distinguishes the input side terminal portion to be connected from the other input side terminal portions. The distribution device according to any one of claims 4 to 7, wherein connection information indicating a connection relationship between each of the plurality of output side terminal portions and the input side terminal portion is displayed on the housing. Any of claims 4 to 8, wherein the electric circuit mounted on the circuit board includes a backflow restricting portion for preventing a high current from flowing between the electrodes due to a backflow of a current from the output side terminal portion. The distribution device according to one item. The distribution device according to claim 9, wherein the backflow regulation unit includes a constant voltage diode that maintains a constant voltage between the electrodes. A distributor that distributes electrical signals for electrocardiogram to multiple electrocardiographs.
Multiple input side terminals that are electrically connected to each of the multiple electrodes via an electric cord,
A plurality of output side terminal portions electrically connected to the plurality of input side terminal portions are provided.
The plurality of output side terminal portions are divided into a plurality of terminal groups corresponding to the plurality of electrocardiographs.
A distributor in which each of the plurality of input-side terminal portions is electrically connected to each of the plurality of terminal groups. The plurality of electrodes are a plurality of limb electrodes, a plurality of chest electrodes, and one or a plurality of auxiliary reference electrodes for obtaining an auxiliary potential that assists the reference potential obtained by the one limb electrode.
The distributor according to claim 11, wherein among the plurality of input-side terminal portions, the auxiliary terminal portion connected to the auxiliary reference electrode is electrically connected to each of the plurality of terminal groups. A housing provided with the input side terminal portion and the output side terminal portion, and a circuit board housed in the housing and electrically connecting the input side terminal portion and the output side terminal portion are provided. The distributor according to claim 11 or 12.

Images