Integrated foldable portable electrocardiograph

Abstract

The invention relates to an integrated foldable portable electrocardiograph which comprises a first machine body and a second machine body, the first machine body and the second machine body are configured to be folded or unfolded in a half-and-half mode, the integrated foldable portable electrocardiograph further comprises a plurality of chest lead electrodes, and each chest lead electrode is connected to the inner side face of the first machine body or the second machine body in a position-adjustable mode. The chest lead electrodes are used for abutting against the positions of the chest of the human body when the first machine body and the second machine body are unfolded, the chest lead electrodes are configured to be capable of locking the positions of the chest lead electrodes after the positions of the chest lead electrodes are adjusted, and a coordinate system for indicating the positions of the chest lead electrodes is arranged in the position adjusting area of each chest lead electrode. The positions of the chest lead electrodes of the electrocardiograph can be parameterized, better flexibility and applicability are achieved, and the threshold of using the electrocardiograph at home is greatly lowered.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and particularly to an integrated foldable and portable electrocardiograph Background Art

[0002] An electrocardiograph is a medical device used to record the physiological electrical signals generated during heart activity, namely electrocardiogram signals. It captures the tiny currents generated by myocardial excitation by using multiple electrodes attached to the body surface, and converts these signals into visual graphs, usually referred to as electrocardiograms (ECGs). These graphs can show the electrical activity of the heart during each heartbeat cycle, thereby helping doctors evaluate the heart's health condition. An electrocardiograph generally includes a main unit, lead wires, and electrodes. The electrodes are used to be attached to the patient's body to receive the heart's electrical signals. The lead wires are connected between the main unit and the electrodes to transmit the electrical signals. The main unit includes a data processing unit, a display screen, and a recording device, which are used to receive, process, and display electrocardiogram data. During an electrocardiogram examination, the electrodes are attached to positions such as the patient's chest and limbs to capture the electrical signals from the heart.

[0003] In the prior art, the main unit is usually placed on a trolley or in a cabinet, far from the patient, resulting in a very long length of the lead wires extending out of the main unit. Coupled with the relatively large size of the main unit, the portability is very poor. Therefore, existing electrocardiographs are generally only used in hospitals or other medical institutions. However, some patients have the need for long-term or frequent detection of electrocardiogram signals, which requires a portable electrocardiograph. Although the existing portable electrocardiographs on the market generally reduce the size of the main unit, there are still the following problems:

[0004] 1. The length of the lead wires extending out of the main unit is still very long, prone to knotting, and inconvenient for storage and carrying.

[0005] 2. Electrocardiogram examination requires professional knowledge related to electrocardiogram. One needs to know the positions where each electrode is attached. During hospital examinations, professional medical staff assist in the operation. However, when an individual conducts a self-examination, one needs to clearly remember the attachment positions of each electrode on the body (especially the chest lead electrodes), resulting in very cumbersome operation. If an electrocardiograph with fixed electrode positions customized for an individual's body type is used, this electrocardiograph may not be suitable for other people in the family, with poor versatility and an increased use cost invisibly. Summary of the Invention

[0006] In view of the above problems, the present invention proposes an integrated foldable and portable electrocardiograph.

[0007] The present invention is implemented by adopting the following technical solutions:

[0008] The present invention provides an integrated foldable and portable electrocardiograph, which includes a first body and a second body. The first body and the second body are configured to be foldable or unfolded in half. It further includes several chest lead electrodes, and each chest lead electrode is connected to the inner side of the first body or the second body in an adjustable position. The chest lead electrodes are used to press against the position of the human chest when the first body and the second body are unfolded. The chest lead electrodes are configured to be able to lock their own positions after adjusting the positions, and a coordinate system indicating the positions of the chest lead electrodes is provided within the position adjustment area of each chest lead electrode.

[0009] Preferably, a slide rail is provided on the inner side of the first body and / or the second body, and the chest lead electrodes are slidably connected to the slide rail.

[0010] Preferably, the slide rail includes a damping portion for providing a sliding damping force to the chest lead electrodes so that the chest lead electrodes can lock their own positions after the sliding stops.

[0011] Preferably, both the first body and the second body are hollow structures. A main unit for receiving and processing electrocardiogram data is provided inside the first body and / or the second body. The chest lead electrodes are connected to the main unit through lead wires, and the lead wires are completely arranged inside the first body or the second body.

[0012] Preferably, a magnetic attraction portion is provided on the inner side of the first body and / or the second body, and the chest lead electrodes are magnetically connected to the magnetic attraction portion.

[0013] Preferably, the coordinate system includes a horizontal and vertical coordinate system grid provided within the range of the magnetic attraction portion.

[0014] Preferably, both the first body and the second body are hollow structures. A main unit for receiving and processing electrocardiogram data is provided inside the first body and / or the second body. The chest lead electrodes are connected to the main unit through lead wires, and a wire passing hole is further provided on the first body or the second body, and a part of the lead wires passes out through the wire passing hole.

[0015] Preferably, it further includes an LL electrode and a telescopic rod slidably connected to the body. The LL electrode is connected to the telescopic rod, and the LL electrode is extended to the position corresponding to the left abdomen of the human body by sliding the telescopic rod.

[0016] Preferably, the body further includes a third body. The first body and the second body are respectively rotatably connected to the left and right sides of the third body. A vertically extending chute is provided on the third body, and the telescopic rod is slidably connected to the chute and can extend out from the lower end of the third body. A push button located in the chute is provided at the upper end of the telescopic rod, and a coordinate system indicating the telescopic distance of the telescopic rod is provided on the side of the chute.

[0017] Preferably, the first body in the unfolded state is relatively located on the left side of the second body, and the second body in the unfolded state is relatively located on the right side of the first body. An LA electrode plate is further provided on the outer side surface of the first body, and an RA electrode plate is further provided on the outer side surface of the second body.

[0018] Preferably, there are six chest lead electrodes in total, namely V1 electrode, V2 electrode, V3 electrode, V4 electrode, V5 electrode and V6 electrode. Among them, the V4 electrode, V5 electrode and V6 electrode are arranged on the inner side surface of the first body, and the V1 electrode, V2 electrode and V3 electrode are arranged on the inner side surface of the second body; A display screen for displaying electrocardiogram data and a button for starting or closing the electrocardiograph are further provided on the outer side of the first body and / or the second body.

[0019] The present invention has the following beneficial effects:

[0020] 1. The positions of the chest lead electrodes of the electrocardiograph of the present invention can be parameterized. For people of different body types, as long as they are guided by professional medical staff to use the electrocardiograph of this embodiment once, they can record the coordinate positions of each chest lead electrode that conform to their own body types. When an individual conducts a self-examination, they only need to adjust each chest lead electrode to the corresponding coordinate position. Therefore, the process of requiring professional medical staff to help attach the electrodes every time an electrocardiogram is measured is eliminated.

[0021] 2. The electrocardiograph of the present invention has better flexibility and applicability. All people in a family can record the coordinate positions of their own chest lead electrodes. When each person needs to use it, they only need to adjust each chest lead electrode to the coordinate position corresponding to themselves, which greatly reduces the threshold for using an electrocardiograph at home.

[0022] 3. The electrocardiograph of the present invention is of an integrated foldable design, integrating a main body, a display screen and lead wires, simplifying the electrocardiograph and making it convenient for storage and carrying. The electrocardiograph is easy to operate. When using it, only need to unfold the electrocardiograph and press it on the appropriate position of the chest with both hands to conduct an examination. One person can complete the examination. At the same time, the main body can be connected to the network and the electrocardiogram data can be uploaded to a third party for diagnosis with one key. Description of the Drawings

[0023] Figure 1 is a perspective view of the integrated foldable and portable electrocardiograph in the unfolded state in Embodiment 1;

[0024] Figure 2 is a schematic diagram of the outer side surface of the integrated foldable and portable electrocardiograph in the unfolded state in Embodiment 1;

[0025] Figure 3It is a schematic diagram of the inner side of the integrated foldable and portable electrocardiograph in the unfolded state in Embodiment 2. Detailed implementation manners

[0026] To further illustrate each embodiment, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention, mainly used to illustrate the embodiments, and can be combined with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those of ordinary skill in the art should be able to understand other possible implementation manners and the advantages of the present invention. The components in the drawings are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0027] Now, the present invention will be further described in conjunction with the accompanying drawings and specific implementation manners.

[0028] Embodiment 1:

[0029] Refer to Figure 1 、 Figure 2 As shown, as a preferred embodiment of the present invention, there is provided an integrated foldable and portable electrocardiograph, including a body, and the body further includes a first body 10, a second body 20, and a third body 30. Among them, the first body 10 and the second body 20 are respectively rotatably connected to the left and right sides of the third body 30, so that the first body 10 and the second body 20 can be folded in half or unfolded by relative rotation. The first body 10, the second body 20, and the third body 30 are in a sheet or plate structure. When the electrocardiograph is folded, the first body 10 and the second body 20 are folded in half into a "U" shape, which is more conducive to the storage of the electrocardiograph. When the electrocardiograph is unfolded, the unfolded planes of the first body 10 and the second body 20 can just cover the chest of the human body.

[0030] The body constitutes the outer shell and installation base of the electrocardiograph, and all functional units of the electrocardiograph are integrated on the body. The functional units of the electrocardiograph include: a main unit, lead wires, and electrodes. Among them, the electrodes are used to abut against the patient's body to receive the electrical signals of the heart, the lead wires are connected between the main unit and the electrodes to transmit electrical signals, and the main unit is used to receive and process electrocardiogram data. The electrocardiograph can be provided with a rechargeable power source or can be externally connected to a power source through a wire. There are several electrodes and they are all connected to the body. The body is a hollow structure, and the main unit and the lead wires are both integrated inside the body. On the outer side of the first body 10 and / or the second body 20, there is also a display screen 15 for displaying electrocardiogram data and a button 16 for starting or closing the electrocardiograph.

[0031] The electrode further includes a chest lead electrode, an RA electrode plate 8 (RA stands for right arm, and the RA electrode is also called the right upper limb electrode, which is generally used to contact the right arm of the human body), an LA electrode plate 9 (LA stands for left arm, and the LA electrode is also called the left upper limb electrode, which is generally used to contact the left arm of the human body), and an LL electrode 7 (LL stands for left leg, and the LL electrode is also called the left lower limb electrode, which is generally used to contact the left leg or the left lower abdomen of the human body) in this embodiment. There are six chest lead electrodes in total, which are generally used to contact the chest of the human body. The six chest lead electrodes are the V1 electrode 1, the V2 electrode 2, the V3 electrode 3, the V4 electrode 4, the V5 electrode 5, and the V6 electrode 6 respectively. The lead system of the limb leads and chest leads adopted above is a commonly used electrocardiogram lead system in the art. According to actual needs, the specific number of limb lead electrodes and chest lead electrodes can be increased or decreased. This example only uses the above specific embodiment for illustration. The chest lead electrodes used in this embodiment are pressing electrodes.

[0032] In the unfolded state, the first body 10 is relatively located on the left side of the second body 20, and the unfolded second body 20 is relatively located on the right side of the first body 10. The LA electrode plate 9 is arranged on the outer side surface of the first body 10, and the RA electrode plate 9 is arranged on the outer side surface of the second body 20. When the electrocardiograph is unfolded, when a person holds the first body 10 and the second body 20 with the left and right hands, they can press on the LA electrode plate 9 and the RA electrode plate 8, respectively, to collect the electrical signals of the left upper limb and the right upper limb.

[0033] Six chest lead electrodes are all arranged on the inner sides of the first body 10 and the second body 20. In this way, when the first body 10 and the second body 20 are unfolded, the chest lead electrodes can press against the position of the human chest. Among them, the V4 electrode 4, the V5 electrode 5 and the V6 electrode 6 are arranged on the inner side of the first body 10, and the V1 electrode 1, the V2 electrode 2 and the V3 electrode 3 are arranged on the inner side of the second body 20. Slide rails are arranged on the inner sides of the first body 10 and the second body 20. For example, the slide rail 17 arranged on the first body 10, and each chest lead electrode can be slidably connected to the slide rail arranged on the first body 10 or the second body 20. According to the different body types of each person, during electrocardiogram measurement, the positions of the chest lead electrodes always need to be adjusted to a certain extent, and the slide rails are arranged according to the adjustment directions of each chest lead electrode. For example, the V1 electrode 1, the V2 electrode 2 and the V3 electrode 3 usually only need to be adjusted vertically, so the slide rails corresponding to the V1 electrode 1, the V2 electrode 2 and the V3 electrode 3 are arranged vertically. The V4 electrode 4, the V5 electrode 5 and the V6 electrode 6 usually only need to be adjusted horizontally, so the slide rails corresponding to the V4 electrode 4, the V5 electrode 5 and the V6 electrode 6 are arranged horizontally. At the same time, the V4 electrode 4, the V5 electrode 5 and the V6 electrode 6 are generally at the same height, so they can share a slide rail. For example, in this embodiment, the V4 electrode 4, the V5 electrode 5 and the V6 electrode 6 are all slidably connected to a slide rail 17.

[0034] By sliding the chest lead electrodes in the slide rails, the positions of the chest lead electrodes can be adjusted. Further, the chest lead electrodes can lock their own positions after the positions are adjusted to prevent the chest lead electrodes from shifting after the position adjustment. In this embodiment, the slide rail corresponding to each chest lead electrode includes a damping part for providing a sliding damping force for the chest lead electrode. For example, the damping part can be a rubber strip extending along the slide rail. Only by applying a certain force to the chest lead electrode can the chest lead electrode overcome the resistance of the damping part and slide. After the chest lead electrode stops sliding, its own position can be locked.

[0035] Within the position adjustment area of each chest lead electrode, a coordinate system indicating the position of the chest lead electrode is provided. For example, the coordinate system 40 provided on the slide rail of the V1 electrode 1. After the above settings, the positions of the chest lead electrodes can be parameterized. For people with different body types, as long as they are guided by professional medical staff to use the electrocardiograph of this embodiment once, they can record the coordinate positions of each chest lead electrode that conforms to their body type. When an individual conducts a self-examination, they only need to adjust each chest lead electrode to the corresponding coordinate position, thus eliminating the process of requiring professional medical staff to help press the electrodes during each electrocardiogram measurement. Moreover, the electrocardiograph of this embodiment has better flexibility and applicability. All people in a family can record the coordinate positions of their own chest lead electrodes. When each person needs to use it, they only need to adjust each chest lead electrode to the coordinate position corresponding to themselves, greatly reducing the threshold for using an electrocardiograph at home. In addition, the electrocardiograph of this embodiment is an integrated foldable design, integrating the host, display screen, and lead wires, simplifying the electrocardiograph and facilitating storage and carrying. The electrocardiograph of this embodiment is easy to operate. When in use, only need to unfold the electrocardiograph and press it with both hands on the appropriate position of the chest to conduct the examination. One person can complete the examination. At the same time, the host can be connected to the network and upload the electrocardiogram data to a third-party diagnosis with one key.

[0036] The LL electrode 7 is configured to be able to extend out of the body to correspondingly move to the position of the left abdomen of the human body. On the other hand, the LL electrode 7 can also retract into the body to facilitate storage. That is to say, the LL electrode 7 is installed on a structure that can be telescopic relative to the body. Therefore, when the first body 10 and the second body 20 are spread on the chest of the human body, the LL electrode 7 can extend out of the body to move to the position of the left abdomen of the human body. In this embodiment, the LL electrode 7 is connected to the telescopic rod 100. The lead wire connecting the LL electrode 7 and the host passes through the inside of the telescopic rod 100. A vertically extending chute 101 is provided on the third body 30. The telescopic rod 100 is slidably connected to the chute 101 and can extend out from the lower end of the third body 30. A push button 102 located in the chute 101 is provided at the upper end of the telescopic rod 100. By pushing the push button 102, the telescopic rod 100 can be driven to expand and contract. Further. A coordinate system indicating the expansion and contraction distance of the telescopic rod 100 is provided on the side of the chute 101.

[0037] In other embodiments, the telescopic structure of the LL electrode 7 can adopt other solutions. For example, in a variant, the lead wire connecting the LL electrode 7 to the main body is configured to be elastically retractable, similar to the retractable structure in a tape measure. In this way, the LL electrode 7 can be pulled out of the body or retracted into the body. When performing electrocardiogram measurement, the LL electrode 7 is pulled out and pressed against the left abdominal position to simulate the acquisition of the left foot electrical signal. Although this variant can also achieve the telescoping of the LL electrode 7, since the lead wire needs to be retracted, it must be set as a flexible wire. Therefore, it is impossible to perform the examination alone during use, and others are needed to help pull out the LL electrode 7 and press it against the left abdominal position. In contrast, in this embodiment, a rigid telescopic rod 100 is used to drive the LL electrode 7 to expand and contract. During use, when holding the main body with both hands and pressing it against the human body, the LL electrode 7 on the telescopic rod 100 will also be pressed against the human body at the same time. Therefore, one person is sufficient to complete the examination action. The setting of the third main body 30 is not necessary. In other embodiments, the third main body 30 can be simplified to a hinge mechanism for rotatably connecting the first main body 10 and the second main body 20. However, in this embodiment, the plate-shaped third main body 30 can limit the incomplete fitting when the first main body 10 and the second main body 20 are folded, avoiding damage to the chest lead electrodes and the slide rails on the inner sides of the first main body 10 and the second main body 20 due to the pressure during folding. On the other hand, the plate-shaped third main body 30 also provides an installation site for the LL electrode 7, making the distribution of each electrode more dispersed. If the third main body 30 is not provided, the LL electrode 7 can also be installed on the first main body 10 or the second main body 20, but this is more likely to cause wiring congestion.

[0038] Since the chest lead electrodes, the RA electrode plate 8, and the LA electrode plate 9 in this embodiment are all connected to the main body, the lead wires of these electrodes can be completely arranged inside the first main body 10 or the second main body 20, and the lead wire of the LL electrode 7 is completely hidden inside the main body. Therefore, the lead wires of the entire electrocardiograph are hidden inside the main body when not in use, avoiding the problems of easy knotting and mess caused by the excessive length of the lead wires extending out of the main body.

[0039] Embodiment 2:

[0040] Refer to Figure 3As shown in the figure, this embodiment provides an integrated foldable and portable electrocardiograph, which is generally the same as Embodiment 1. The main difference lies in the movable connection mode between the chest lead electrodes and the body. The chest lead electrodes are magnetically connected to the inner side of the first body 10A or the second body 20A. For example, in this embodiment, a flat first magnetic attraction part 11 is provided on the inner side of the second body 20A, and the V1 electrode, V2 electrode, and V3 electrode are magnetically connected to the first magnetic attraction part 11. A strip-shaped second magnetic attraction part 104 is provided on the inner side of the first body 10A, and the V4 electrode, V5 electrode, and V6 electrode are magnetically connected to the second magnetic attraction part 104. Using this magnetically connected structure can, on the one hand, expand the position adjustment area of the chest lead electrodes, and on the other hand, it is also more convenient to lock the positions of the chest lead electrodes, because as long as the chest lead electrodes are magnetically attracted to a specific position, the chest lead electrodes will not easily shift without applying a large force. Existing electrodes are usually made of metal, which is also beneficial for arranging the magnetic attraction parts. The magnetic attraction part can be realized by using a permanent magnet or an electromagnet.

[0041] For this embodiment, because the position adjustment area of the V1 electrode, V2 electrode, and V3 electrode is larger and there are more adjustment directions, the chest lead electrodes can move arbitrarily within the entire plane of the first magnetic attraction part 11. Therefore, an inner two-dimensional horizontal and vertical coordinate system grid is set within the range of the first magnetic attraction part 11 to more clearly indicate the positions of the V1 electrode, V2 electrode, and V3 electrode. The adjustment areas of the V4 electrode, V5 electrode, and V6 electrode are basically at the same height, so the second magnetic attraction part 104 is configured as a strip shape. Therefore, a one-dimensional coordinate system is set within the range of the second magnetic attraction part 104. In addition, the magnetic attraction structure can also be used as a damping structure and can also be applied to the slide rail 17 in Embodiment 1 as a magnetic damping structure for locking the positions of the chest lead electrodes.

[0042] In Embodiment 1, the chest lead electrodes are slidably connected to the outside through the slide rail, so the lead wires can be directly connected to the inner ends of the chest lead electrodes, and thus can not be exposed outside the body at all. In this embodiment, the inner ends of the chest lead electrodes are connected to the magnetic attraction part 11. Therefore, the lead wires can be connected to the outside of the chest lead electrodes. For example, the lead wire 12 is connected to the outside of the V1 electrode. A wire passing hole is also provided on the first body 10A or the second body 20A. For example, a wire passing hole 13 is provided on the second body 20A. One end of the lead wire 12 is connected to the main unit inside the body, and the other end passes through the wire passing hole 13 and is connected to the chest lead electrode. Therefore, only part of the lead wire 12 is exposed outside the body, and because the chest lead electrodes are magnetically fixed, the risk of knotting of each lead wire is also very low, and the wiring of the lead wires is still in order.

[0043] Although the present invention has been specifically shown and described in connection with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined by the appended claims, and all such changes fall within the scope of protection of the present invention.

Claims

1. An integrated foldable and portable electrocardiograph, characterized in that: It includes a body which consists of a first body and a second body. The first body and the second body are configured to be able to fold or unfold in half. It also includes several chest lead electrodes, and each chest lead electrode is connected to the inner side surface of the first body or the second body in an adjustable position form. The chest lead electrodes are used to press against the positions on the human chest when the first body and the second body are unfolded. The chest lead electrodes are configured to be able to lock their own positions after adjusting the positions, and a coordinate system indicating the positions of the chest lead electrodes is provided within the position adjustment area of each chest lead electrode.

2. The integrated foldable and portable electrocardiograph according to claim 1, wherein: Sliding rails are provided on the inner side surface of the first body and / or the second body, and the chest lead electrodes are slidably connected to the sliding rails.

3. The integrated foldable and portable electrocardiograph according to claim 2, characterized in that: The sliding rails include damping portions for providing a sliding damping force to the chest lead electrodes so that the chest lead electrodes can lock their own positions after the sliding stops.

4. The integrated foldable and portable electrocardiograph according to claim 2, characterized in that: Both the first body and the second body are of hollow structures. A main machine for receiving and processing electrocardiogram data is provided inside the first body and / or the second body. The chest lead electrodes are connected to the main machine through lead wires, and the lead wires are completely arranged inside the first body or the second body.

5. The integrated foldable and portable electrocardiograph according to claim 1, characterized in that: Magnetic attraction portions are provided on the inner side surface of the first body and / or the second body, and the chest lead electrodes are magnetically connected to the magnetic attraction portions.

6. The integrated foldable and portable electrocardiograph according to claim 5, wherein: Both the first body and the second body are of hollow structures. A main machine for receiving and processing electrocardiogram data is provided inside the first body and / or the second body. The chest lead electrodes are connected to the main machine through lead wires, and threading holes are also provided on the first body or the second body, and a part of the lead wires passes out from the threading holes.

7. The integrated foldable and portable electrocardiograph according to claim 1, wherein: It further includes an LL electrode and a telescopic rod slidably connected to the body. The LL electrode is connected to the telescopic rod, and the LL electrode is extended to the position corresponding to the left abdomen of the human body by the sliding of the telescopic rod.

8. The integrated foldable and portable electrocardiograph according to claim 7, characterized in that: The body further includes a third body. The first body and the second body are respectively rotatably connected to the left and right sides of the third body. A vertically extending chute is provided on the third body. The telescopic rod is slidably connected to the chute and can extend out from the lower end of the third body. A push button located in the chute is provided at the upper end of the telescopic rod, and a coordinate system indicating the telescopic distance of the telescopic rod is provided on the side of the chute.

9. The integrated foldable and portable electrocardiograph according to claim 1, wherein: With the first body in the unfolded state being relatively located on the left side of the second body and the second body in the unfolded state being relatively located on the right side of the first body, an LA electrode plate is further provided on the outer side surface of the first body, and an RA electrode plate is further provided on the outer side surface of the second body.

10. The integrated foldable and portable electrocardiograph according to claim 1, wherein: With the first body in the unfolded state being relatively located on the left side of the second body and the second body in the unfolded state being relatively located on the right side of the first body, there are a total of six chest lead electrodes, namely V1 electrode, V2 electrode, V3 electrode, V4 electrode, V5 electrode and V6 electrode. Among them, the V4 electrode, V5 electrode and V6 electrode are arranged on the inner side surface of the first body, and the V1 electrode, V2 electrode and V3 electrode are arranged on the inner side surface of the second body; a display screen for displaying electrocardiogram data and a button for starting or shutting down the electrocardiograph are further provided on the outer side of the first body and / or the second body.

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