CN213696944U

CN213696944U - Electrocardiosignal acquisition system

Info

Publication number: CN213696944U
Application number: CN202022134162.8U
Authority: CN
Inventors: 郑辉; 朱龙威
Original assignee: Wuhan United Imaging Zhirong Medical Technology Co Ltd
Current assignee: Wuhan United Imaging Zhirong Medical Technology Co Ltd
Priority date: 2020-09-25
Filing date: 2020-09-25
Publication date: 2021-07-16
Anticipated expiration: 2030-09-25

Abstract

The application relates to an electrocardiosignal acquisition system. The electrocardiosignal acquisition system comprises an electrode, a first magnet, a signal processing device and a second magnet. The electrode includes a first connection interface. The first magnet is disposed on the electrode. The signal processing device comprises a second connection interface. The second magnet is arranged on the signal processing device. When the first magnet and the second magnet are attracted, the second connecting interface is contacted with the first connecting interface, so that the electrode is communicated with the signal processing device. The electrocardiosignal acquisition system utilizes the characteristic that the heteropolarity of the magnet attracts each other, and the first magnet and the second magnet are automatically attracted without applying external force, so that the convenience of disassembly and assembly is improved.

Description

Electrocardiosignal acquisition system

Technical Field

The application relates to the technical field of medical treatment, in particular to an electrocardiosignal acquisition system.

Background

In order to technically discover diseases such as arrhythmia and myocardial ischemia which are not easy to discover conventionally, the continuous 24-hour cardiac electrical activity data of a patient needs to be recorded. The electrocardiogram data under different conditions of rest, activity, dining, working, learning, sleeping and the like is an important objective basis for determining diagnosis and judging curative effect.

The electrode in the electrocardiosignal acquisition system is connected with a signal processing device. The electrodes are adapted to be adhered to the surface of the patient's skin. In order to avoid cross infection among patients, the electrodes need to be replaced frequently, and how to enable the electrocardiosignal acquisition system to be convenient to disassemble and assemble is an urgent problem to be solved.

SUMMERY OF THE UTILITY MODEL

Therefore, the electrocardiosignal acquisition system is needed to be convenient to disassemble and assemble.

The embodiment of the application provides an electrocardiosignal acquisition system, which comprises an electrode, a first magnet, a signal processing device and a second magnet. The electrode includes a first connection interface. The first magnet is disposed on the electrode. The signal processing device comprises a second connection interface. The second magnet is disposed on the signal processing device. The second connection interface is in contact with the first connection interface when the first magnet is attracted to the second magnet. The electrode is connected with the signal processing device.

In one embodiment, a relative positional relationship between the positive pole of the first magnet and the first connection interface is the same as a relative positional relationship between the negative pole of the second magnet and the second connection interface. The relative position relationship between the negative pole of the first magnet and the first connecting interface is the same as the relative position relationship between the positive pole of the second magnet and the second connecting interface.

In one embodiment, the electrode includes an electrode body and a mounting device. The electrode body is used for collecting electrocardiosignals. The electrode body is connected with the first connecting interface. The mounting device is arranged on the electrode body. The first magnet and the first connection interface are arranged on the mounting device.

In one embodiment, a surface of the mounting device is provided with a first groove. The first magnet and the first connection interface are arranged in the first groove. When the first magnet is matched with the second magnet, the signal processing device is received in the first groove.

In one embodiment, the bottom surface of the first groove is provided with a second groove. The first magnet is arranged on the bottom surface of the second groove.

In one embodiment, the first magnet and the second magnet are the same shape.

In one embodiment, the electrode body includes a flexible substrate and a detection body. The flexible substrate includes a first surface and a second surface. The mounting device is fixed to the first surface. The detection body is arranged on the second surface. The detection body is connected with the first connection interface.

In one embodiment, the flexible substrate includes a pooling portion and an extension portion. The detection body is provided to the extension portion. The mounting device is secured to the first surface of the collecting portion.

In one embodiment, the cardiac signal acquisition system further comprises a battery. The cells are disposed on the collecting portion and/or the first surface or the second surface of the collecting portion. The battery is connected with the signal processing device.

In one embodiment, the detection body is conductive silver paste or carbon powder.

In one embodiment, the extension is plural. The plurality of extension portions are respectively connected with the collection portion. The number of the detection bodies is plural. The plurality of detection bodies are arranged on the second surfaces of the plurality of extension parts in a one-to-one correspondence manner.

The electrocardiosignal acquisition system provided by the embodiment of the application comprises an electrode, a first magnet, a signal processing device and a second magnet. The electrode includes a first connection interface. The first magnet is disposed on the electrode. The signal processing device comprises a second connection interface. The second magnet is disposed on the signal processing device. When the first magnet and the second magnet are attracted, the second connecting interface is in contact with the first connecting interface so that the electrode is communicated with the signal processing device.

The electrocardiosignal acquisition system utilizes the characteristic that the heteropolarity of the magnets attract each other by arranging the first magnet and the second magnet, and the first magnet and the second magnet are automatically attracted without applying external force. If the magnet is required to be separated from the signal processing device, the force for taking the signal processing device is only required to be larger than the attractive force between the two magnets. Therefore, the electrocardiosignal acquisition system improves the convenience of assembly and disassembly through the first magnet and the second magnet.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments or the conventional technologies of the present application, the drawings used in the descriptions of the embodiments or the conventional technologies will be briefly introduced below, it is obvious that the drawings in the following descriptions are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of the electrocardiograph signal acquisition system provided in an embodiment of the present application;

FIG. 2 is a schematic structural diagram of the electrode and the signal processing device provided in an embodiment of the present application after being separated;

FIG. 3 is a schematic structural view of the electrode provided in one embodiment of the present application;

FIG. 4 is a schematic structural view of the mounting device provided in an embodiment of the present application;

fig. 5 is a schematic structural diagram of the electrode body and the detection body provided in an embodiment of the present application;

fig. 6 is a schematic structural diagram of the electrode body provided in an embodiment of the present application.

Reference numerals:

10. an electrocardiosignal acquisition system; 20. an electrode; 200. a first connection interface; 30. a first magnet; 40. a signal processing device; 410. a second connection interface; 60. a second magnet; 210. an electrode body; 211. a flexible substrate; 201. a first surface; 202. a second surface; 101. a collecting part; 102. an extension portion; 212. detecting a body; 220. a mounting device; 221. a first groove; 222. a second groove; 70. a battery.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and those skilled in the art will be able to make similar modifications without departing from the spirit of the application and it is therefore not intended to be limited to the embodiments disclosed below.

The numbering of the components as such, e.g., "first", "second", etc., is used herein for the purpose of describing the objects only, and does not have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings). In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present application and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be considered as limiting the present application.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Referring to fig. 1 and 2, an embodiment of the present application provides an electrocardiograph signal acquisition system 10, which includes an electrode 20, a first magnet 30, a signal processing device 40, and a second magnet 60. The electrode 20 comprises a first connection interface 200. The first magnet 30 is disposed on the electrode 20. The signal processing device 40 comprises a second connection interface 410. The second magnet 60 is disposed on the signal processing device 40. When the first magnet 30 is attracted to the second magnet 60, the second connection interface 410 is in contact with the first connection interface 200. The electrode 20 is connected to the signal processing device 40.

The electrocardiosignal acquisition system 10 that this application embodiment provided is through setting up first magnet 30 with second magnet 60 utilizes the characteristic that the heteropolar looks of magnet is inhaled, first magnet 30 with second magnet 60 automatic actuation need not to exert external force. If the magnet needs to be separated from the signal processing device 40, the force for taking the signal processing device 40 is only required to be larger than the attractive force between the two magnets. Therefore, the electrocardiosignal acquiring system 10 improves the convenience of assembling and disassembling the electrode 20 and the signal processing device 40 through the first magnet 30 and the second magnet 60.

The electrode 20 is applied to the skin and used for collecting electrocardiosignals of a human body. The signal processing device 40 is configured to perform signal processing and signal storage on the electrocardiographic signal.

The signal processing device 40 is further configured to upload the processed electrocardiographic signal to an external upper computer.

The first magnet 30 and the second magnet 60 have not only a function of fixing the electrode 20 to the signal processing device 40, but also a function of bringing the first connection interface 200 and the second connection interface 410 into contact and conduction by a characteristic that opposite poles attract each other.

In one embodiment, the relative positional relationship between the positive pole of the first magnet 30 and the first connection interface 200 is the same as the relative positional relationship between the negative pole of the second magnet 60 and the second connection interface 410. The relative positional relationship between the negative pole of the first magnet 30 and the first connection port 200 is the same as the relative positional relationship between the positive pole of the second magnet 60 and the second connection port 410. Due to the specific relative position relationship between the magnets and the communication interface, when the first magnet 30 and the second magnet 60 are attracted, the second connection interface 410 and the first connection interface 200 are automatically aligned, manual alignment is not needed, time is saved, and the speed of disassembly and assembly is increased.

The first connection interface 200 comprises a communication interface and/or a conductive interface for enabling signal and/or power transmission.

The second connection interface 410 includes a communication interface and/or a conductive interface for enabling signal and/or power transmission. In one embodiment, the first magnet 30 and the second magnet 60 are elongated structures. The surface of the elongated structure includes both a positive electrode region and a negative electrode region. The first magnet 30 and the second magnet 60 are rectangular, wavy or elliptical.

The relative positional relationship between the positive pole of the first magnet 30 and the first connection interface 200 includes: the distance of the first connection interface 200 from the positive pole of the first magnet 30; the orientation of the first connection interface 200 relative to the positive pole of the first magnet 30.

The relative positional relationship between the negative pole of the first magnet 30 and the first connection interface 200 includes: the distance of the first connection interface 200 from the negative pole of the first magnet 30; the orientation of the first connection interface 200 relative to the negative pole of the first magnet 30.

The relative position relationship between the positive pole of the second magnet 60 and the second connection interface 410 includes: the distance of the second connection interface 410 from the positive pole of the second magnet 60; the orientation of the second connection interface 410 relative to the positive pole of the second magnet 60.

The relative positional relationship between the negative pole of the second magnet 60 and the second connection interface 410 includes: the distance of the second connection interface 410 from the negative pole of the second magnet 60; the orientation of the second connection interface 410 relative to the negative pole of the second magnet 60.

In one embodiment, the first magnet 30 and the second magnet 60 have the same shape to ensure that the magnetic force of the first magnet 30 and the magnetic force of the second magnet 60 are the same, so as to avoid the magnet occupying too much space, and facilitate the miniaturization design of the electrocardiograph signal acquisition system 10.

In one embodiment, the number of the first magnets 30 and the second magnets 60 may be the same or different.

In one embodiment, the first magnet 30 and the second magnet 60 are plural, and the number of the first magnet 30 and the second magnet 60 is the same. The arrangement positions of the plurality of first magnets 30 are opposite to the arrangement positions of the plurality of second magnets 60, so that the second connection interface 410 is in contact with the first connection interface 200 when the plurality of first magnets 30 and the plurality of second magnets 60 are attracted in a one-to-one correspondence. The electrode 20 is connected to the signal processing device 40.

The first magnet 30 and the second magnet 60 are permanent magnets or electromagnets. When the first magnet 30 and the second magnet 60 are electromagnets, the electromagnets are normally open, and the opening and closing of the electromagnets are controlled by a switch.

The first connection interface 200 and the second connection interface 410 may be in the form of a contact type or a plug type.

The number of first connection interfaces 200 is related to the number of connections of the electrodes 20. In one embodiment, the number of the second connection interfaces 410 is not less than the number of the first connection interfaces 200, so as to ensure that all the electrocardiographic signals of the multiple connected electrodes can be received by the signal processing device 40.

In one embodiment, the electrode 20 includes a plurality of the first connection interfaces 200. The signal processing apparatus 40 includes a plurality of the second connection interfaces 410. When the first magnet 30 is attracted to the second magnet 60, each of the first connection interfaces 200 is in contact with one of the second connection interfaces 410.

In one embodiment, the conductive area of the first connection interface 200 is larger than that of the second connection interface 410, so that the first connection interface 200 can be in contact communication with the second connection interface 410 even if a slight misalignment occurs when the electrode 20 and the signal processing device 40 are mounted.

The shapes of the first connection interface 200 and the second connection interface 410 include a rectangle, a circle, a square, or the like.

In one embodiment, the first connection interface 200 is a bar shape, and the second connection interface 410 is a circle shape. The width of the first connection interface 200 is not smaller than the diameter of the second connection interface 410, so that the first connection interface 200 can be in good contact with the second connection interface 410 even if the electrode 20 and the signal processing device 40 are slightly misaligned.

During use of the cardiac signal acquisition system 10, the electrodes 20 are in contact with the skin surface. The first connection interface 200 is provided at a surface of the electrode 20 that is not in contact with the skin. The electrode 20 is provided separately from the signal processing means 40. The electrodes 20 are designed in a one-shot configuration to reduce cross-contamination between patients. Meanwhile, the signal processing device 40 can be used for multiple times, so that the cost is saved.

In one embodiment, the electrode 20 includes an electrode body 210 and a mounting device 220. The electrode body 210 is used for collecting electrocardiosignals. The electrode body 210 is connected to the first connection interface 200. The mounting device 220 is disposed on the electrode body 210. The first magnet 30 and the first connection interface 200 are disposed on the mounting device 220.

The electrode body 210 is used to contact the skin surface to collect the cardiac electrical signal of the patient. The electrocardiographic signals collected by the electrode body 210 are transmitted to the second connection interface 410 through the first connection interface 200. The electrocardiographic signal is then transmitted to the signal processing device 40 through the second connection interface 410.

The mounting means 220 is disposed on a surface of the electrode body 210 not in contact with the skin.

The mounting device 220 is used for accommodating the signal processing device 40 when the first magnet 30 is attracted to the second magnet 60, so as to protect the signal processing device 40 and avoid the dislocation of the first connecting interface 200 and the second connecting interface 410 caused by scratch.

The mounting device 220 improves the contact stability of the first connection interface 200 and the second connection interface 410, and improves the detection accuracy of the electrocardiograph signal acquisition system 10.

The electrode body 210 is shaped like an elongated strip, a square or a circle. The shape of the electrode body 210 is related to the position of the electrocardiographic signal to be acquired.

The shape of the mounting device 220 may be a disk structure, or a rectangular parallelepiped or a cube structure.

The electrode body 210 and the mounting device 220 are separated or integrated. The electrode body 210 and the mounting device 220 are fixed by means of adhesion, hot melting, binding or clamping.

Referring to fig. 3, in one embodiment, a first groove 221 is formed on a surface of the mounting device 220. The first magnet 30 and the first connection interface 200 are disposed in the first groove 221. When the first magnet 30 is fitted with the second magnet 60, the signal processing device 40 is received in the first groove 221.

The mounting device 220 forms a protection space, surrounds and accommodates the signal processing device 40, and makes the signal processing device 40 not easy to be scratched and damaged.

The shape of the first groove 221 accommodates the shape of the appearance of the signal processing device 40. The shape of the first groove 221 may be the same as or different from the shape of the signal processing device 40. The shape of the first groove 221 may be a regular structure such as a cylinder, a cuboid or a cube, or an irregular shape such as a gourd shape and a stepped hole.

In one embodiment, the shape of the first groove 221 is the same as the shape of the signal processing device 40. When the signal processing device 40 is accommodated in the first groove 221, the signal processing device 40 is clamped in the first groove 221, so that the fixing firmness of the signal processing device 40 is improved.

When the signal processing device 40 is received in the first groove 221, the second connection interface 410 is in contact with the first connection interface 200. The electrode body 210 is electrically connected to the signal processing device 40.

The shape of the first groove 221 is the same as that of the signal processing device 40, which also improves the stability of the contact between the second connection interface 410 and the first connection interface 200, and avoids the virtual connection between the second connection interface 410 and the first connection interface 200.

In one embodiment, the bottom surface of the first groove 221 is opened with a second groove 222. The first magnet 30 is disposed on the bottom surface of the second groove 222, so as to reduce the influence of the first magnet 30 and the second magnet 60 on the transmission of the electrocardiograph signal.

In one embodiment, the height of the surface of the first magnet 30 away from the bottom surface of the second groove 222 from the ground of the first groove 221 is the same as the height of the surface of the second magnet 60 from the mounting surface of the signal processing device 40, so as to ensure that the second connection interface 410 is in contact with the first connection interface 200 when the first magnet 30 is attracted to the second magnet 60.

In one embodiment, the second groove 222 is disposed at the middle of the bottom surface of the first groove 221. The first communication interfaces are located at two sides of the opening of the second groove 222.

The plurality of second connection interfaces 410 are respectively disposed on the surface of the signal processing device 40 and respectively located at two sides of the second magnet 60, so as to fully utilize the surface of the signal processing device 40 and reduce the overall volume.

In one embodiment, a surface of the housing of the signal processing device 40 is provided with a groove, and the second magnet 60 and the second connection interface 410 are disposed at a bottom of the groove. The recess is used for receiving the mounting device 220 to increase the firmness of the connection between the electrode 20 body and the signal processing device 40.

Referring to fig. 4 and 5 together, in one embodiment, the electrode body 210 includes a flexible substrate 211 and a detecting body 212. The flexible substrate 211 includes a first surface 201 and a second surface 202. The mounting device 220 is fixed to the first surface 201. The detecting body 212 is disposed on the second surface 202. The detector 212 is connected to the first connection interface 200.

The thickness of the flexible substrate 211 is between 1um and 100 um. The flexible substrate 211 is made of parylene, polyimide, polydimethylsiloxane or polyurethane. The shape of the flexible substrate 211 is consistent with the shape of the part to be detected. When the flexible substrate 211 is adhered to the skin of a patient.

The detection body 212 includes a flexible detection line or a rigid detection line.

In one embodiment, the detector 212 is a printed conductor. The detection body 212 is printed on the flexible substrate 211. The detection electrode 20 is arranged on the flexible substrate 211 in a printing mode, so that the volume and the mass of the system are reduced. The electrocardiosignal acquisition system 10 has small volume and light weight, and is convenient for the patient to wear next to the skin.

The detector 212 is used to enable signal acquisition and transmission. According to the position and the number of the electrocardiosignals which need to be collected, a plurality of conducting paths with different numbers such as 3 leads, 5 leads, 12 leads and the like can be made. The detecting body 212 includes conductive silver paste or carbon powder.

Referring also to fig. 6, in one embodiment, the flexible substrate 211 includes a collection portion 101 and an extension portion 102. The detection body 212 is provided to the extension portion 102. The mounting device 220 is fixed to the first surface 201 of the collecting portion 101. The extension 102 is adapted to extend to a detection site.

In one embodiment, the extension 102 is plural. The extension portions 102 are connected to the collecting portion 101. The number of the detection bodies 212 is plural. The detecting bodies 212 are disposed on the second surfaces 202 of the extending portions 102 in a one-to-one correspondence.

A plurality of such extensions 102 are used to apply to a plurality of different detection sites. Printed conductors are printed on each extension 102 to collect the ecg signals at the test site.

In one embodiment, the cardiac signal acquisition system 10 further comprises a battery 70. The battery 70 is disposed on the first surface 201 or the second surface 202 of the collecting portion 101 and/or the extending portion 102. The battery 70 is connected to the signal processing device 40. The battery 70 is used for supplying power to the signal processing device 40.

In one embodiment, the battery 70 is electrically connected to the signal processing device 40 through the first connection interface 200.

When the battery 70 is disposed on the first surface 201 of the collecting portion 101, the battery 70 is disposed between the first surface 201 and the mounting device 220, and an insulating layer is disposed between the battery 70 and the mounting device 220, so as to prevent the housing of the mounting device 220 from being charged. The battery 70 includes a lithium battery, a lead battery, a fuel cell, or the like.

In one embodiment, the battery 70 comprises a thin film battery. The thin film battery is a novel rechargeable battery with nano-cellulose as a base material. The thin film battery can be only 20 nanometers thick. The thin film battery has small volume and large electric capacity.

In one embodiment, the battery 70 includes a nanofiber substrate and a battery slurry layer of charged polystyrene plastic, charged plastic, or perovskite coated on the nanofiber substrate. A thin film battery 15 cm in diameter can store up to 1 farad of capacitance, corresponding to the capacity of a super capacitor battery. In one embodiment, the detector 212 is a conductive silver paste. The detection body 212 and the battery 70 are printed on the flexible substrate at the same time, so that the cost of the electrocardiosignal acquisition system 10 is reduced. An insulating layer is provided between the detection body 212 and the battery 70, so that the detection of the detection body 212 on the cardiac electric signal is prevented from being affected.

In one embodiment, the detector 212 is provided separately from the battery 70. The battery 70 and the detecting body 212 are fixedly connected or detachably connected. The battery 70 and the detecting body 212 are connected by adhesion, electrostatic attraction, or the like.

The battery 70 is one or more. The plurality of batteries 70 are provided on one or more of the detection body 212, the flexible base, the mounting device 220, the signal processing device 40, or the human body.

In one embodiment, the cardiac signal acquisition system 10 further comprises a wearable structure. The signal processing device 40 is connected with the wearable structure, so that the signal processing device 40 is prevented from falling and being damaged when the electrocardiosignal acquisition system 10 works. The wearing structure comprises a wrist strap, a ring, a finger strap, a necklace, clothes and the like.

In the description herein, references to the description of "some embodiments," "other embodiments," "desired embodiments," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, a schematic description of the above terminology may not necessarily refer to the same embodiment or example.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. An electrocardiographic signal acquisition system, comprising:

an electrode comprising a first connection interface;

a first magnet disposed on the electrode;

the signal processing device comprises a second connecting interface;

the second magnet is arranged on a second connecting interface of the signal processing device;

when the first magnet and the second magnet are attracted, the second connecting interface is in contact with the first connecting interface, and the electrode is connected with the signal processing device.

2. The system for acquiring electrocardiosignals according to claim 1, wherein the relative position relationship between the positive pole of the first magnet and the first connecting interface is the same as the relative position relationship between the negative pole of the second magnet and the second connecting interface; the relative position relationship between the negative pole of the first magnet and the first connecting interface is the same as the relative position relationship between the positive pole of the second magnet and the second connecting interface.

3. The cardiac signal acquisition system of claim 1, wherein the electrode comprises:

an electrode body connected with the first connection interface;

the mounting device is arranged on the electrode body, and the first magnet and the first connecting interface are arranged on the mounting device.

4. The system of claim 3, wherein a surface of the mounting device defines a first recess, the first magnet and the first connection interface are disposed in the first recess, and the signal processing device is received in the first recess when the first magnet and the second magnet are mated.

5. The system for acquiring electrocardiographic signals according to claim 4, wherein a second recess is formed in a bottom surface of said first recess, and said first magnet is disposed in said second recess.

6. The cardiac signal acquisition system of claim 1, wherein the first magnet and the second magnet are the same shape.

7. The cardiac signal acquisition system of claim 3, wherein the electrode body comprises:

a flexible substrate comprising a first surface and a second surface, the mounting device being secured to the first surface;

a detection body disposed on the second surface, the detection body being connected to the first connection interface.

8. The system of claim 7, wherein the flexible substrate comprises a collection portion and an extension portion, the detection body is disposed on the extension portion, and the mounting device is secured to the first surface of the collection portion.

9. The cardiac signal acquisition system as set forth in claim 8, further comprising:

and the battery is arranged on the collecting part and/or the extending part and is connected with the signal processing device.

10. The system for acquiring cardiac signals according to claim 9, wherein the battery and the detection body are conductive silver paste.

11. The system according to claim 8, wherein a plurality of the extension portions are provided, the plurality of extension portions are connected to the collection portion, respectively, the plurality of the detection bodies are provided, and the plurality of the detection bodies are provided on the second surfaces of the plurality of the extension portions in one-to-one correspondence.