CN113384278A

CN113384278A - Wearable device capable of measuring electrocardiogram signals

Info

Publication number: CN113384278A
Application number: CN202010169521.5A
Authority: CN
Inventors: 张�杰; 董辰; 陈宜欣; 李宏宝
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2020-03-12
Filing date: 2020-03-12
Publication date: 2021-09-14
Also published as: WO2021180172A1

Abstract

The application relates to the technical field of electronic equipment, and relates to wearable equipment capable of measuring electrocardiogram signals. Wearable equipment including the table body and with the watchband that the table body links to each other, wearable equipment still includes three electrodes that are used for gathering human surface signal of telecommunication, and when wearable equipment was worn in a human upper limbs, three electrodes can contact with a human upper limbs, another upper limbs of human body, a human lower limb of human body respectively in order to gather the signal of telecommunication on the limb surface that corresponds separately, and the signal of telecommunication that gathers can generate the ECG signal corresponding with six limbs leads after the ECG signal production unit in wearable equipment is handled. Compared with the prior art, the wearable device can provide more comprehensive and accurate monitoring for cardiac functions, realizes more accurate screening of arrhythmia types and more accurate judgment of myocardial ischemia positions, and is favorable for users to find cardiac anomalies in time.

Description

Wearable device capable of measuring electrocardiogram signals

Technical Field

The invention relates to the technical field of electronic equipment, in particular to wearable equipment capable of measuring electrocardiogram signals.

Background

With the rapid development of electronic technology and the increasing importance of people on their health conditions, wearable devices are increasingly widely used to assist health assessment.

For example, some bracelets of the prior art incorporate an Electrocardiogram (ECG) monitoring function for monitoring the heart function of the user. The table body bottom surface of bracelet is equipped with first electrode, and the table body openly is equipped with the second electrode, and under the user state, first electrode and the wrist contact of wearing the bracelet, the second electrode contacts with another wrist of user, can obtain the electrocardiogram signal that both hands I leads and corresponds from this.

The electrocardiographic signals corresponding to the two-handed I-leads only reflect the ischemic state of the heart portion, and the capability of discriminating arrhythmia is relatively limited (for example, it is difficult to discriminate ventricular velocity from supraventricular velocity with differential conduction only through the two-handed I-leads), so the above-mentioned prior art is not comprehensive in monitoring the heart function.

Disclosure of Invention

Some embodiments of the present application provide a wearable device that can measure electrocardiogram signals, which can provide more comprehensive and accurate monitoring of cardiac function.

The embodiment of the application provides wearable equipment capable of measuring electrocardiogram signals, and the wearable equipment comprises a watch body and a watchband connected with the watch body; the wearable device also comprises three electrodes for collecting electric signals on the surface of the human body, and when the wearable device is worn on one upper limb of the human body, the three electrodes can be respectively contacted with one upper limb of the human body, the other upper limb of the human body and one lower limb of the human body; one of the three electrodes is a bottom electrode provided on the bottom surface of the watch body, and the other two electrodes are surface electrodes provided on the outer peripheral surface of the wearable device.

Wherein, the bottom surface of the table body is: when the wearable device is worn on the wrist, the watch body faces the surface of the wrist; the outer peripheral surface of the wearable device is: when the wearable device is worn on the wrist, the wearable device does not face a surface of the wrist.

According to the embodiment of the application, the wearable device is provided with three electrodes which are used for being in contact with limbs of a human body, surface electric signals of two upper limbs and one lower limb of the human body can be collected, and after the electric signals collected by the three electrodes are processed by the electrocardiogram signal generating unit in the wearable device, the wearable device can obtain electrocardiogram signals corresponding to six limb leads. Compared with the two-hand I-lead, the method and the device can monitor the ischemic state of more myocardial positions, so that more accurate myocardial ischemic position judgment can be provided; in addition, the electrocardiogram signals corresponding to the six limb leads also comprise II-lead and aVR-lead electrocardiogram signals which are more approved by doctors in the aspect of arrhythmia diagnosis, so that more arrhythmia types can be accurately screened. Compared with the prior art, the method and the device for monitoring the heart function can provide more comprehensive and accurate monitoring for the heart function, and are beneficial to timely finding out heart abnormality for a user.

In addition, the wearable device of the embodiment of the application can be worn on the upper limbs of a human body, so that a user can perform electrocardiogram measurement under the condition of keeping normal sitting posture, the measurement is not limited by using occasions, for example, the user can perform measurement in houses, companies, outdoor public places and the like at any time and any place, and the use is convenient.

It should be noted that, in the actual use process, three electrodes may be respectively contacted with two upper limbs and one lower limb of the human body to obtain electrocardiogram signals corresponding to the six limb leads; or two of the three electrodes can be in contact with limbs of the human body, and the other electrode is an idle electrode, so that an electrocardiogram signal corresponding to one limb lead (limb I lead, limb II lead or limb III lead) can be obtained.

According to the embodiment of the application, one electrode in the three electrodes is arranged on the bottom surface of the watch body, and when the wearable device is worn on the wrist of a user, the electrode can be in natural contact with the wrist of the user, so that the electrode can be conveniently arranged, the number of the electrodes exposed on the outer peripheral surface of the wearable device can be reduced, and the appearance of the wearable device is attractive.

In some embodiments, the two surface electrodes are respectively disposed on two of the front surface of the watch body, the side surface of the watch body, and the watch band. After the arrangement, the two surface electrodes are positioned on two different surfaces of the wearable device, so that one limb can be prevented from contacting the two surface electrodes at the same time, and the measurement result is accurate.

In some embodiments, one of the two surface electrodes is disposed on a side surface of the watch body, and the other is disposed on a front surface of the watch body. After setting up like this, three electrode all is located on the table body, can simplify the electric connection structure between electrode and the heart electrograph signal processing unit to simplify wearable equipment's structure. In some usage scenarios, the electrodes disposed on the side of the watch body are used to contact another upper limb of the human body, and the electrodes disposed on the front of the watch body are used to contact a lower limb of the human body.

In some embodiments, projections of the two surface electrodes in a thickness direction of the watch body do not overlap. Therefore, when the right hand of the user contacts the electrode on the side face of the watch body, the electrode on the front face of the watch body cannot be touched by mistake at the same time, and the measurement result is accurate.

In some embodiments, the watch body is provided with a crown on a side thereof; the electrode arranged on the side surface of the watch body is positioned on the crown. The electrode on the side surface of the watch body may be an electrode plate provided on the peripheral surface and/or the end surface of the crown, or may be the crown itself. Therefore, the electrode and the crown are combined into a whole, the structure of the wearable device can be simplified, and the wearable device is attractive in appearance.

In some embodiments, one of the two surface electrodes is disposed on the front surface of the watch body, and the other is disposed on the wristband. After setting up like this, when measuring the heart electrograph, each limbs of user can be in natural state, comfort level when can improving the measurement improves user experience. In some use scenes, the electrode arranged on the front surface of the watch body is used for contacting with the other upper limb of the human body, and the electrode arranged on the watchband is used for contacting with the lower limb of the human body; in other usage scenarios, the electrodes on the front face of the watch body are configured to contact the lower limb of the human body, and the electrodes on the wristband are configured to contact the other upper limb of the human body

In some embodiments, the electrode disposed on the front surface of the watch body includes one or more strip-shaped sub-electrodes in electrical communication with each other. After the arrangement, the surface area of the electrode can be increased, so that a user can conveniently contact with the electrode, and the appearance of the watch body is more attractive.

In some embodiments, at least one of the two surface electrodes is disposed on the wearable device by a retractable pull wire; when the wearable device is worn on one upper limb of the human body, the at least one surface electrode is pulled and the telescopic pull wire is driven to be pulled out, so that the at least one surface electrode is separated from the peripheral surface of the wearable device and is contacted with the other upper limb of the human body or one lower limb of the human body; when the telescopic pull wire is automatically retracted when the at least one surface electrode is in a free state, the at least one surface electrode can be reset to the outer peripheral surface of the wearable device.

When one of the two surface electrodes is arranged on the wearable device through the telescopic pull wire, the convenience and comfort degree in electrocardiogram measurement can be improved, or the long-time continuous measurement of the electrocardiogram of one limb lead can be realized. When the two surface electrodes are arranged on the wearable device through the telescopic pull wires, the long-time continuous measurement of the electrocardiogram of the six limb leads can be realized.

In some embodiments, the wearable device further comprises at least one electrode extension wire, one end of the electrode extension wire is a connecting terminal which can be detachably connected with one of the two surface electrodes, and the other end of the electrode extension wire is an electrode which can collect electric signals on the surface of the human body; wherein, in the use state, wearable equipment wears to an upper limbs of human body, and the connecting terminal of electrode extension line is connected to one of two surface electrodes, and the electrode of electrode extension line other end can contact with another upper limbs of human body or a lower limbs of human body.

In some embodiments, the number of the electrode extension lines is one, and the connection terminals of the electrode extension lines are detachably connected to one of the two surface electrodes, so that convenience and comfort in measuring the electrocardiogram can be improved, or long-term continuous measurement of the electrocardiogram of one limb lead can be realized.

In some embodiments, the number of the electrode extension lines is two, and two connection terminals of the two electrode extension lines are respectively connected with the two surface electrodes, so that long-time continuous measurement of six limb lead electrocardiograms can be realized.

In some embodiments, the connection terminal of the electrode extension line has a catching groove, and the surface electrode has a protrusion, through which the connection terminal can be caught with the protrusion on the surface electrode.

In some embodiments, the connecting terminal of the electrode extension line has a magnetic member thereon, and the connecting terminal can be magnetically connected to the surface electrode via the magnetic member.

In some embodiments, the wearable device is provided with a jack on the watch body, and the jack is connected with one of the two surface electrodes through a conductive structure arranged inside the watch body; one end of the electrode extension wire is a plug-in connector which can be inserted into the jack, and the other end of the electrode extension wire is an electrode which can collect electric signals on the surface of a human body; when the wearable device is used, the wearable device is worn on one upper limb of a human body, the plug connector of the electrode extension line is inserted into the jack of the watch body, and the electrode at the other end of the electrode extension line can be in contact with the other upper limb of the human body or one lower limb of the human body.

According to the embodiment of the application, the wearable equipment is provided with the jack, the electrode extension line is provided with the plug-in connector which can be plugged in the jack, the electrode extension line is connected with the wearable equipment in a plugging mode, the connection is reliable, and the operation is simple.

Drawings

FIGS. 1 a-1 f show schematic electrode distributions corresponding to six limb leads, respectively;

fig. 2 shows a schematic view of a bracelet structure provided in an embodiment of the present application;

fig. 3a to 3e show a first example of a bracelet electrode arrangement manner provided by an embodiment of the application;

fig. 4a to 4c show a second example of the manner of arranging the bracelet electrodes provided by the embodiment of the application;

fig. 5a to 5c show a third example of the manner of arranging the bracelet electrodes provided by the embodiment of the application;

fig. 6a to 6d are schematic structural diagrams of a bracelet (including a telescopic pull wire) according to an embodiment of the present application;

fig. 7a to 7d are schematic structural diagrams (including electrode extension lines) of a bracelet according to another embodiment of the present application;

fig. 8a shows a scenario of the bracelet used for electrocardiogram measurement according to the embodiment of the present application;

fig. 8b shows another scenario when the bracelet provided by the embodiment of the present application is used for electrocardiogram measurement.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure. While the invention will be described in conjunction with the preferred embodiments, it is not intended that features of the invention be limited to these embodiments. On the contrary, the invention is described in connection with the embodiments for the purpose of covering alternatives or modifications that may be extended based on the claims of the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be practiced without these particulars. Moreover, some of the specific details have been left out of the description in order to avoid obscuring or obscuring the focus of the present invention.

It should be noted that in this specification, like reference numerals and letters refer to like items in the following drawings, and thus, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.

In the description of the present embodiment, it should be noted that the terms "upper", "lower", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that are conventionally arranged when products of the application are used, and are only used for convenience in describing the application and simplifying the description, but do not indicate or imply that the devices or elements to be referred must have specific orientations, be constructed in specific orientations, and be operated, and thus, cannot be construed as limiting the application.

The terms "first," "second," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

In the description of the present embodiment, it should be further noted that, unless explicitly stated or limited otherwise, the terms "disposed" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present embodiment can be understood in specific cases by those of ordinary skill in the art.

To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

The common medical lead system for electrocardiographic measurement is the standard 12-lead, in which the limb lead system reflects the condition of projecting cardiac potential on the frontal plane, including the I, II, III, avR, avL and avF leads; the precordial lead system reflects the condition of the heart potential projection horizontal plane and comprises: the V1, V2, V3, V4, V5, V6 leads.

Referring to fig. 1a to 1f, the six limb leads are respectively:

limb I lead is formed between the left upper limb electrode E1 and the right upper limb electrode E2 (fig. 1 a); limb II leads are formed between the right upper limb electrode E2 and the lower limb electrode E3 (fig. 1 b); limb III lead formation between the left upper limb electrode E1 and the lower limb electrode E3 (fig. 1 c);

illustratively, an electrode on any one of the left upper limb, the right upper limb or the lower limb is taken as a probe electrode, and an irrelevant electrode is connected in series between the electrodes on the other two limbs (for example, a resistor can be connected in series between the electrodes of the other two limbs as the irrelevant electrode), a pressurized unipolar lead is formed between the probe electrode and the irrelevant electrode, namely,

the right upper limb electrode E2 is used as a probe electrode, an irrelevant electrode E4 is connected in series between the left upper limb electrode E1 and the lower limb electrode E3, and a unipolar and pressed right upper limb aVR lead is formed between the right upper limb electrode E2 and the irrelevant electrode E4 (figure 1 d); a left upper limb electrode E1 is used as a probe electrode, a second irrelevant electrode E5 is connected in series between the right upper limb electrode E2 and a lower limb electrode E3, and a unipolar and pressed left upper limb aVL lead is formed between the left upper limb electrode E1 and the second irrelevant electrode E5 (figure 1E); the lower limb electrode E3 was used as a probe electrode, and the indifferent electrode three E6 was connected in series between the left upper limb electrode E1 and the right upper limb electrode E2, and the unipolar left lower limb aVF lead was formed between the lower limb electrode E3 and the indifferent electrode three E6 (fig. 1 f).

Herein, "upper limb" is a part below the shoulder, including the hand; the "lower limb" is the part below the hip joint, including the feet. In addition, since an accurate electrocardiogram signal can be obtained by performing an electrocardiogram measurement using the right lower limb instead of the left lower limb, the "lower limb" herein is either the left lower limb or the right lower limb.

In the prior art, the wearable device can measure electrocardiogram signals corresponding to the I leads of both hands, but the electrocardiogram signals corresponding to the I leads of both hands can only reflect the ischemic state of partial side walls of the heart, and the capacity of distinguishing arrhythmia is relatively limited. To this end, embodiments of the present application provide a wearable device (e.g., a bracelet, a watch, an armband, etc.) for providing more comprehensive monitoring of cardiac function. The technical solution of the embodiment of the present application is described below by taking a bracelet as an example.

Fig. 2 shows a bracelet 100 according to an embodiment of the present application. The bracelet 100 includes an electrocardiogram signal generating unit (not shown) and three electrodes (not shown) connected to the electrocardiogram signal generating unit, when the bracelet 100 is worn on an upper limb of a human body, the three electrodes can be respectively contacted with the upper limb of the human body, another upper limb of the human body, and a lower limb of the human body to collect electrical signals of respective corresponding limb surfaces, and the electrocardiogram signal generating unit can process the electrical signals collected by the three electrodes to generate electrocardiogram signals corresponding to six limb leads. The material of the "electrode" may be any conductive material such as copper, aluminum, silver, stainless steel, or graphite.

In some possible implementations, the "electrocardiogram signal generating unit" can receive the electrical signals on the electrodes, process the received electrical signals to obtain the potential differences between the electrodes, and amplify the potential differences between the electrodes through the amplifying circuit to obtain the electrocardiogram signals corresponding to the leads of the limbs. The "electrocardiogram signal generating unit" may be a micro-control unit or other unit having a signal processing function.

The bracelet 100 of the embodiment of the application is provided with three electrodes which are used for being in contact with limbs of a human body, so that electrocardiogram signals corresponding to six limb leads can be obtained, and compared with the I leads of two hands, the embodiment of the application can monitor the ischemic state of more myocardial positions, so that more accurate myocardial ischemic position judgment can be provided; in addition, the electrocardiogram signals corresponding to the six limb leads comprise II-lead and aVR-lead electrocardiogram signals which are more approved by doctors in the aspect of arrhythmia diagnosis, so that more arrhythmia types can be accurately screened. Compared with the prior art, the method and the device for monitoring the heart function can provide more comprehensive and accurate monitoring for the heart function, and are beneficial to timely finding out heart abnormality for a user.

In addition, in this embodiment of the application, the bracelet 100 is worn to the wrist of a human body, so that a user can perform electrocardiogram measurement while keeping a normal sitting posture, the measurement is not limited by use occasions, the user can perform measurement in places such as houses, companies and outdoor public places at any time and any place, and the use is convenient.

In addition, optionally, a reference electrode for noise elimination may be further disposed on the bracelet 100, and the reference electrode is a fourth electrode in addition to the above three electrodes. The reference electrode is connected to the electrocardiogram signal generating unit and is capable of contacting the surface of the human body to acquire an electric signal of the surface of the human body. In the process of generating the electrocardiogram signal by the electrocardiogram signal generating unit, noise elimination can be performed by using the electric signal acquired by the reference electrode.

Referring to fig. 2, in the embodiment of the present application, the bracelet 100 includes a watch body 1 and a wrist strap 2 connected to the watch body 1, the wrist strap 2 is used for wearing the watch body 1 to the wrist of a user, and an electrocardiogram signal generating unit may be disposed in the watch body 1.

The connection mode of the watch body 1 and the wrist strap 2 is not limited in the application, for example, the wrist strap 2 may be implemented by a section of flexible strap, and two ends of the flexible strap are respectively connected with two ends of the watch body 1; the wrist band 2 may also be implemented by two flexible bands, one end of each of the two flexible bands is connected to one of the two ends of the watch body 1, and the other end of each of the two flexible bands is detachably connected by a connecting structure (e.g., a buckle, a connecting hook, a sticky strip, etc.).

In the embodiment of the present application, the three electrodes on the bracelet 100 are an electrode a, an electrode B, and an electrode C, where the electrode a is disposed on the bottom surface of the watch body 1 and is referred to as a "watch bottom electrode" herein, and the electrode B and the electrode C are disposed on the outer peripheral surface of the bracelet 100 and are referred to as a "surface electrode" herein.

In this application embodiment, the bottom surface of table body 1 is located to the A electrode, and when bracelet 100 worn in user's wrist, the A electrode can with user's wrist natural contact, like this, not only can make things convenient for the setting of electrode, the reducible quantity of exposing the electrode on bracelet 100 outer peripheral face simultaneously for bracelet 100 appearance is pleasing to the eye.

In some possible implementations, the B electrode and the C electrode are respectively disposed on two of the front surface of the watch body 1, the side surface of the watch body 1, and the wrist band 2. The electrode B and the electrode C are arranged on two different surfaces, so that one limb can be prevented from contacting the electrode B and the electrode C at the same time, and the measurement result is accurate.

Here, the outer circumferential surface of the bracelet 100 is a surface of the bracelet 100 that does not face the wrist when the bracelet 100 is worn on the wrist; the bottom surface of the watch body 1 is the surface of the watch body 1 facing the wrist when the bracelet 100 is worn on the wrist; the front surface of the watch body 1 is a surface of the watch body 1 facing away from the wrist when the bracelet 100 is worn on the wrist, for example, the surface provided with the display screen in fig. 2 is the front surface of the watch body 1; the side surface of watch body 1 is a surface between the front surface of watch body 1 and the bottom surface of watch body 1, and for example, the surface on which crown 11 is provided in fig. 2 is the side surface of watch body 1.

In the following description, a usage scenario of the bracelet 100 is described by taking an example in which the user wears the bracelet 100 on the left wrist (i.e., the a electrode is in contact with the left wrist). However, it is understood that the user may wear the bracelet 100 on the right wrist, and for a usage scenario when the bracelet 100 is worn on the right wrist, the electrode a in the following description may be replaced by contacting with the right wrist of the user, and the electrode contacting with the right upper limb in the following description may be replaced by contacting with the left wrist.

Fig. 3a to 3e show an example of an electrode arrangement manner of the bracelet 100. The electrode A is arranged on the bottom surface of the watch body 1, the electrode B is arranged on the side surface of the watch body 1, and the electrode C is arranged on the front surface of the watch body 1. In this example, three electrodes are all provided on the watch body 1, which can simplify the electrical connection structure between the electrodes and the electrocardiogram signal generating unit, thereby simplifying the structure of the bracelet 100.

In some use scenarios of the present example, the a electrode is in contact with the user's left wrist, the B electrode is in contact with the user's right upper limb, and the C electrode is in contact with the user's lower limb. When measuring the electrocardiogram, the user can keep the sitting posture, wear bracelet 100 to the left wrist, and the a electrode is in natural contact with the user's left wrist. By rotating the left wrist or by rotating the bracelet 100, the front of the watch body 1 faces downward, and then the left hand is naturally placed on the lower limb, so that the C electrode is in contact with the lower limb of the user. Alternatively, the user may naturally place the left hand on the left lower limb such that the C-electrode is in contact with the left lower limb, so that the user may be kept in a relatively relaxed posture when measuring the electrocardiogram.

In this example, the B electrode is disposed on the side of the watch body 1, and therefore, when the left hand is naturally placed on the lower limb, the B electrode does not contact with the left upper limb or the lower limb, at this time, the user may contact the B electrode with one finger (e.g., thumb) of the right hand at this time, so that the three electrodes on the bracelet 100 are respectively in contact with two upper limbs and one lower limb of the human body to collect the electrical signals of the respective corresponding limb surfaces, and the electrocardiogram signal generating unit can process the electrical signals collected by the three electrodes to generate the electrocardiogram signals corresponding to the six limb leads.

In the embodiment of the present application, the actual use method of the hand ring 100 is not limited. For example, in still other use scenarios of the present example, the user may also remove the bracelet 100 from the wrist to make an electrocardiogram measurement. For example, in this scenario, the user may keep a sitting posture, turn the watch body 1 so that the front of the watch body 1 faces downward, and then place the watch body 1 on one of the lower limbs of the user so that the C electrode on the front of the watch body 1 is in contact with the lower limb of the user. Meanwhile, the user may press the bottom watch with one hand (e.g., left hand) so that the hand is in contact with the a electrode and the other hand (e.g., right hand) is in contact with the B electrode so that the three electrodes on the bracelet 100 are in contact with two upper limbs and one lower limb of the human body, respectively, and the electrocardiogram generating unit can generate electrocardiogram signals corresponding to the six limb leads. In this use scenario, the user may be kept in a more comfortable position while measuring the electrocardiogram.

In other usage scenarios of the present example, the user may also contact only two of the three electrodes to obtain an electrocardiogram signal corresponding to one limb lead. For example, the user wears the bracelet 100 on the left wrist while touching the B electrode with the right hand, and the electrocardiogram signal generating unit can obtain electrocardiogram signals corresponding to limb I leads.

Referring to fig. 3a and 3B, in some possible implementations of the present example, the side of the watch body 1 is provided with a crown 11, and the B electrode is provided on this crown 11. For example, the B electrode may be an electrode pad provided on the peripheral surface of the crown 11 and/or the end surface of the crown 11, or may be the crown 11 itself. In this implementation, unite two into one electrode and crown 11, can simplify bracelet 100's structure for bracelet 100 appearance is pleasing to the eye.

Referring to fig. 3d and 3e, in some possible implementations of the present example, the C electrode includes one or more sections of strip-shaped sub-electrodes in electrical communication with each other. Illustratively, referring to fig. 3d, the C electrode may comprise a segment of a strip-shaped sub-electrode; or, referring to fig. 3e, the electrode C includes two sections of strip-shaped sub-electrodes, the two sections of strip-shaped sub-electrodes are respectively disposed on the upper and lower sides of the display screen, and the two sections of strip-shaped sub-electrodes are electrically connected by setting the structure inside the watch body 1. This implementation not only can increase the surface area of electrode, and convenience of customers contacts with the electrode, can also make the appearance of table body 1 more pleasing to the eye.

Referring to fig. 3B, 3d and 3e, in some possible implementations of the present example, projections of the B electrode and the C electrode along the thickness direction of the watch body 1 do not overlap, so that when the right hand of the user touches the B electrode, the C electrode is not touched by mistake at the same time, so that the measurement result is accurate.

Fig. 4a to 4c show an example two of the electrode arrangement manner of the bracelet 100. Wherein, the electrode A is arranged on the bottom surface of the watch body 1, the electrode B is arranged on the front surface of the watch body 1, and the electrode C is arranged on the wrist strap 2. In this example, when measuring an electrocardiogram, each limb of the user can be in a natural state, which can improve the comfort level during measurement and improve the user experience.

In one use scenario of the present example, the a electrode is in contact with the user's left wrist, the B electrode is in contact with the user's right upper limb, and the C electrode is in contact with the user's lower limb. When measuring the electrocardiogram, the user can keep the sitting posture, wear bracelet 100 to the left wrist, and the a electrode is in natural contact with the user's left wrist. By rotating the left wrist or the bracelet 100, the C electrode is made to face the lower limb frontally, and then the left hand is naturally placed on the lower limb, so that the C electrode is made to contact with the lower limb of the user. Alternatively, the user may naturally place the left hand on the left lower limb such that the C-electrode is in contact with the left lower limb, so that the user may be kept in a relatively relaxed posture when measuring the electrocardiogram.

In this example, the B electrode is provided on the front surface of the watch body 1, and therefore, when the left hand is naturally placed on the lower limb, B does not contact the lower limb, and the user can naturally place the right hand on the B electrode. Optionally, the right hand of the user can slightly press the watch body 1 while contacting with the B electrode, which is beneficial to ensure reliable contact between the a electrode and the left wrist. At this time, the three electrodes on the bracelet 100 are respectively in contact with two upper limbs and one lower limb of the human body, and can collect the electrical signals of the surfaces of the respective corresponding limbs, and the electrocardiogram signal generating unit can process the electrical signals collected by the three electrodes to generate the electrocardiogram signals corresponding to the six limb leads.

In another usage scenario of the present example, the a electrode is in contact with the user's left wrist, the B electrode is in contact with the user's lower limb, and the C electrode is in contact with the user's right upper limb. When measuring the electrocardiogram, the user can keep the sitting posture, wears bracelet 100 to human left wrist, and the A electrode is in natural contact with user's left wrist. By rotating the left wrist or the wristband 100, the front of the watch body 1 faces downward, and then the left hand is naturally placed on the lower limb, so that the B electrode on the front of the watch body 1 contacts the lower limb of the user. Alternatively, the user may naturally place the left hand on the left lower limb such that the B-electrode is in contact with the left lower limb, so that the user may be kept in a relatively relaxed posture when measuring the electrocardiogram.

In this example, the C electrode is disposed on the wrist band 2, and therefore, when the left hand is naturally placed on the lower limb, the C electrode does not contact the lower limb, and at this time, the user can naturally place the right hand on the C electrode, so that the three electrodes on the bracelet 100 are respectively in contact with two upper limbs and one lower limb of the human body, so as to collect the electrical signals on the surfaces of the limbs respectively corresponding to the three electrodes, and the electrocardiogram signal generating unit can process the electrical signals collected by the three electrodes to generate the electrocardiogram signals corresponding to the six limb leads.

In still other usage scenarios of the present example, the user may also contact only two of the three electrodes to obtain an electrocardiogram signal corresponding to one limb lead. For example, the user wears the bracelet 100 on the left wrist while touching the B electrode with the right hand, and the electrocardiogram signal generating unit can obtain electrocardiogram signals corresponding to limb I leads.

In some possible implementations of the present example, the B electrode includes one or more strip-shaped sub-electrodes in electrical communication with each other. The arrangement manner of the C electrode in the first example can be referred to, and is not described again. This implementation not only can increase the surface area of electrode to convenience of customers contacts with the electrode, can also make the appearance of table body 1 more pleasing to the eye.

In some possible implementations of the present example, the position of the C electrode on the wrist band 2 is such that when the bracelet 100 is worn on the wrist of the user, the C electrode and the watch body 1 can be located on opposite sides of the wrist of the user, which can further improve the comfort during measurement. Alternatively, referring to fig. 4C, the wrist band 2 of the bracelet 100 includes a first wrist band 21 and a second wrist band 22 respectively disposed at two ends of the watch body 1, and the C electrode may be disposed at an end of the first wrist band 21 away from the watch body 1, and in other implementations, the C electrode may also be disposed at an end of the second wrist band 22 away from the watch body 1.

Fig. 5a to 5c show an example three of the electrode arrangement manner of the bracelet 100. Wherein, the electrode A is arranged on the bottom surface of the watch body 1, the electrode B is arranged on the side surface of the watch body 1, and the electrode C is arranged on the wrist strap 2.

In some use scenarios of the present example, the a electrode is in contact with the user's left wrist, the B electrode is in contact with the user's right upper limb, and the C electrode is in contact with the user's lower limb. When measuring the electrocardiogram, the user can keep the sitting posture, wear bracelet 100 to the left wrist, and the a electrode is in natural contact with the user's left wrist. By rotating the left wrist or by rotating the bracelet 100, the front of the C electrode faces downward, and then the left hand is naturally placed on the leg, so that the C electrode is in contact with the lower limb of the user. Alternatively, the user may naturally place the left hand on the left lower limb such that the C-electrode is in contact with the left lower limb, so that the user may be kept in a relatively relaxed posture when measuring the electrocardiogram.

In this example, the B electrode is disposed on the side of the watch body 1, so that when the left hand is naturally placed on the lower limb, the B electrode does not contact the right upper limb, and at this time, the user can contact the B electrode with one finger (e.g., thumb) of the right hand, so that the three electrodes on the bracelet 100 are respectively in contact with two upper limbs and one lower limb of the human body to collect the electrical signals of the respective corresponding limb surfaces, and the electrocardiogram signal generation unit can process the electrical signals collected by the three electrodes to generate electrocardiogram signals corresponding to the six limb leads.

In some possible implementations of the present example, the position of the C electrode on the wrist band 2 is such that when the bracelet 100 is worn on the wrist of the user, the C electrode and the watch body 1 can be located on opposite sides of the wrist of the user, which can further improve the comfort during measurement. Alternatively, referring to fig. 5b and 5C, the wrist band of the bracelet 100 includes a first wrist band 21 and a second wrist band 22 respectively disposed at both ends of the watch body 1, and the C electrode may be disposed at an end of the first wrist band 21 away from the watch body 1 (fig. 5b), or the C electrode may be disposed at an end of the second wrist band 22 away from the watch body 1 (fig. 5C).

In addition, the user can only contact two of the three electrodes with the limbs of the human body to obtain the electrocardiogram signal corresponding to one limb lead. For example, when the user wears the bracelet 100 on the left wrist while touching the B electrode with the right hand, an electrocardiogram signal corresponding to the limb I-lead can be obtained.

Referring to fig. 6a to 6d, in an embodiment of the present application, at least one of the B electrode and the C electrode may be further disposed on the bracelet 100 through the telescopic pull wire 3. When one of the B electrode and the C electrode is disposed on the bracelet 100 through the telescopic stay 3, convenience and comfort in electrocardiographic measurement can be improved, or long-time continuous measurement of electrocardiographic of one limb lead can be realized. When the B electrode and the C electrode are both arranged on the bracelet 100 through the telescopic stay wires 3, the long-time continuous measurement of the electrocardiogram of six limb leads can be realized. The application scenarios of the long-time continuous measurement of the electrocardiogram are as follows: measurement while sleeping, measurement while exercising, measurement while working, etc.

The principle of the arrangement of the extension cord 3 will be described below by taking the electrode arrangement of example one as an example. For other electrode arrangement modes, the arrangement principle of the telescopic pull wire 3 is similar to that of the first example, and the description is omitted.

Fig. 6a to 6C show a case where the C electrode of the above example one is provided on the bracelet 100 through the telescopic cord 3. In some usage scenarios, the a electrode is in contact with the user's left wrist, the B electrode is in contact with the user's right upper limb, and the C electrode is in contact with the user's lower limb. Fig. 6a shows a state where the electrode C is located on the outer peripheral surface of the bracelet 100, fig. 6b shows an intermediate state when the electrode C is pulled, and fig. 6C shows a state when the electrode C is pulled into contact with the right upper limb. When measuring an electrocardiogram, the bracelet 100 is worn to the left wrist of a human body, and the a electrode is naturally contacted with the left wrist of a user. Pulling the C electrode and driving the telescopic pull wire 3 to be pulled out, wherein the C electrode can be separated from the outer peripheral surface of the bracelet 100 and can be contacted with the lower limbs of the human body, and then the C electrode can be fixed on the surface of the human body through fixing devices such as an electrode sticker. At this time, the B electrode is contacted with one finger (e.g., thumb) of the right hand so that the three electrodes on the bracelet 100 are contacted with two upper limbs and one lower limb of the human body, respectively, to collect electrical signals of the respective corresponding limb surfaces, and the electrocardiogram signal generating unit can process the electrical signals collected by the three electrodes to generate electrocardiogram signals corresponding to the six limb leads.

After the electrocardiogram measurement is finished, the electrode paste is torn off, the electrode B is in a free state, at the moment, the telescopic stay wire 3 automatically retracts, and the electrode C can be reset to the outer peripheral surface of the bracelet 100. In this scenario, when measuring the electrocardiogram, the C electrode is in contact with the lower limb through the retractable cord 3, and the watch body 1 does not need to be in direct contact with the lower limb, so that the user can perform the electrocardiogram measurement through various postures such as sitting, standing, lying and the like, thereby improving the convenience and comfort level during the measurement.

In other use scenarios, the structure can also realize long-time continuous measurement of one limb lead. In the use scene, the electrode A is in contact with the left wrist of a user, the electrode C is in contact with the lower limb of the user, and the electrode B is an idle electrode. When measuring electrocardiogram, the bracelet 100 is worn to the left wrist of a human body, and the A electrode is naturally contacted with the left wrist. Then, pull the C electrode and drive flexible acting line 3 and pull out, the C electrode can break away from the outer peripheral face of bracelet 100 and can contact with human low limbs, then fixes the C electrode on human surface through fixing device such as electrode subsides. At this time, the limbs of the human body are in a natural state, and the normal activity of the human body is not influenced when the electrocardiogram is measured, so that the electrocardiogram signals corresponding to the limb III leads can be continuously measured for a long time.

The principle that the B electrode is arranged on the bracelet 100 through the telescopic pull wire 3 is similar to the C electrode, and the description is omitted.

Fig. 6d shows a case where both the B electrode and the C electrode of the above example one are disposed on the bracelet 100 through the telescopic cord 3. In some usage scenarios, the a electrode is in contact with the user's left wrist, the B electrode is in contact with the user's right upper limb, and the C electrode is in contact with the user's lower limb. When measuring an electrocardiogram, the bracelet 100 is worn to the left wrist of a human body, and the a electrode is naturally contacted with the left wrist of a user. Then, pulling the B electrode and driving the telescopic pull wire 3 to be pulled out, the B electrode can be separated from the outer peripheral surface of the bracelet 100 and can be contacted with the right upper limb of the human body, and then the B electrode is fixed on the surface of the human body through fixing devices such as an electrode sticker. Similarly, pulling the C electrode and pulling out the telescopic pull wire 3, the C electrode can be separated from the outer peripheral surface of the bracelet 100 and can be contacted with the lower limbs of the human body, and then the C electrode is fixed on the surface of the human body by a fixing device such as an electrode sticker. When measuring the electrocardiogram, the electrode B is contacted with the right upper limb through the telescopic pull wire 3, and the electrode C is contacted with the lower limb of the human body through the telescopic pull wire 3, so that each limb of the human body is in a natural state in the measuring process, the normal activity of a user is not influenced in the measuring process, the human body can carry out electrocardiogram measurement in various postures such as standing posture, sitting posture, lying posture, static state, motion state and the like, and the electrocardiogram signals corresponding to six limb leads can be continuously measured for a long time.

After the electrocardiogram measurement is finished, the electrode paste is torn off, the B electrode and the C electrode are in a free state, at the moment, the telescopic pull wire 3 automatically retracts, and the B electrode and the C electrode can be reset to the outer peripheral surface of the bracelet 100.

Fig. 7a to 7d illustrate another embodiment of the bracelet 100 provided by the present application, in this embodiment, the bracelet 100 further includes at least one electrode extension line 4, one end of the electrode extension line 4 is a connection terminal capable of being detachably connected to a B electrode or a C electrode, and the other end is an electrode capable of collecting an electrical signal on a surface of a human body. When one of the B electrode and the C electrode is connected to the electrode extension wire 4 (i.e., when the electrode extension wire 4 is one), convenience and comfort in electrocardiographic measurement can be improved, or long-term continuous measurement of an electrocardiogram of one limb lead can be realized. When the B electrode and the C electrode are both connected with the electrode extension line 4 (namely, when the electrode extension line 4 is two), the long-time continuous measurement of the electrocardiogram of the six limb leads can be realized. The application scenarios of the long-time continuous measurement of the electrocardiogram are as follows: measurement while sleeping, measurement while exercising, measurement while working, etc.

In some possible implementations, the connection terminal has a slot, and the B electrode or the C electrode has a protrusion, and the connection terminal can be engaged with the protrusion on the B electrode or the protrusion on the C electrode through the slot (for example, the connection mode of the electrode extension line 4 and the C electrode shown in fig. 7 a); alternatively, the connection terminal has a magnetic member, through which the connection terminal can be magnetically connected to the B electrode or the C electrode (for example, the connection mode between the electrode extension line 4 and the C electrode shown in fig. 7C).

The principle of disposing the electrode extension lines 4 will be described below by taking the electrode disposing manners of example one and example three as examples. For other electrode arrangement modes, the arrangement principle of the electrode extension lines 4 is similar to that of the first example and the third example, and the description is omitted.

Fig. 7a shows a case where the C electrode of the above example one is connected to the electrode extension line 4. In some usage scenarios, the a electrode is in contact with the user's left wrist, the B electrode is in contact with the user's right upper limb, and the C electrode is connected to the lower limb by an electrode extension wire 4. When measuring an electrocardiogram, the bracelet 100 is worn to the left wrist of a human body, and the left wrist of a user with the A electrode is naturally contacted. The connection terminal at one end of the electrode extension wire 4 is connected to the C electrode, and the electrode (D electrode shown in the figure) at the other end of the electrode extension wire 4 is brought into contact with the lower limb of the human body, and the D electrode is fixed to the surface of the human body by a fixing means such as an electrode patch. Then, the right hand contacts the electrode B so that the three electrodes on the bracelet 100 are connected with two upper limbs and one lower limb of the human body respectively to collect the electrical signals of the respective corresponding limb surfaces, and the electrocardiogram signal generating unit can process the electrical signals collected by the three electrodes to generate electrocardiogram signals corresponding to the six limb leads. In the scene, when measuring the electrocardiogram, the C electrode is connected with the lower limbs of the human body through the electrode extension lines 4, and the watch body 1 does not need to be in direct contact with the lower limbs, so that a user can measure the electrocardiogram through various postures such as sitting posture, standing posture, lying posture and the like, and the convenience and the comfort degree during measurement are improved.

In other use scenarios, the structure can also realize long-time continuous measurement of one limb lead. In the use scene, the electrode A is contacted with the left wrist of a user, the electrode C is connected with the right upper limb through an electrode extension wire 4, and the electrode B is an idle electrode. When measuring electrocardiogram, the bracelet 100 is worn to the left wrist of a human body, and the A electrode is naturally contacted with the left wrist. Then, the C electrode is connected with the lower limbs of the human body through the electrode extension wires 4, and then is fixed on the surface of the human body through a fixing device such as an electrode patch. At this time, the limbs of the human body are in a natural state, and the normal activity of the human body is not influenced when the electrocardiogram is measured, so that the electrocardiogram signals corresponding to the limb III leads can be continuously measured for a long time.

Fig. 7B shows a case where both the B electrode and the C electrode of the above example one are connected to the electrode extension line 4. In some usage scenarios, the a electrode is in contact with the user's left wrist, the B electrode is connected to the user's right upper limb via electrode extension 4, and the C electrode is connected to the user's lower limb via electrode extension 4. When measuring an electrocardiogram, the bracelet 100 is worn to the left wrist of a human body, and the left wrist of a user with the A electrode is naturally contacted. The connection terminal at one end of one electrode extension wire 4 is connected to the C electrode, and the electrode (electrode D shown in the figure) at the other end of the electrode extension wire 4 is brought into contact with the lower limb of the human body, and the electrode D is fixed to the surface of the human body by a fixing means such as an electrode patch. The other electrode extension wire 4 is connected at one end thereof to the electrode B, and the other electrode extension wire 4 is brought into contact with the lower limb of the human body (electrode F shown in the figure) and fixed to the surface of the human body by a fixing means such as an electrode patch. At this time, the three electrodes on the bracelet 100 are respectively connected with two upper limbs and one lower limb of the human body, and can collect the electrical signals of the surfaces of the respective corresponding limbs, and the electrocardiogram signal generating unit can process the electrical signals collected by the three electrodes to generate the electrocardiogram signals corresponding to the six limb leads. In the scene, in the measuring process, all limbs of the human body are in a natural state, the normal activity of a user cannot be influenced in the measuring process, the human body can carry out electrocardiogram measurement in various postures such as a standing posture, a sitting posture, a lying posture, a static state and a moving state, and continuous and long-time measurement can be carried out on electrocardiogram signals corresponding to six limb leads.

Fig. 7C shows a case where the C electrode of example three is connected to the electrode extension line 4. In some usage scenarios, the a electrode is in contact with the user's left wrist, the B electrode is in contact with the user's right upper limb, and the C electrode is connected to the lower limb by an electrode extension wire 4. In the scene, when measuring the electrocardiogram, the C electrode is connected with the lower limbs of the human body through the electrode extension lines 4, and the watch body 1 does not need to be in direct contact with the lower limbs, so that a user can measure the electrocardiogram through various postures such as sitting posture, standing posture, lying posture and the like, and the convenience and the comfort degree during measurement are improved.

In addition, in the structure shown in fig. 7C, the C electrode is connected with the lower limbs of the human body through the electrode extension lines 4, the watch body 1 does not need to be in direct contact with the lower limbs, when the electrocardiogram is measured, the limbs of the human body are in a natural state, and the normal activity of the human body is not influenced in the measuring process, so that the electrocardiogram signals corresponding to the III leads of the limbs can be continuously measured for a long time.

Fig. 7d shows a case where the B electrode and the C electrode of example three are both connected to the electrode extension line 4. In some usage scenarios, the a electrode is in contact with the user's left wrist, the B electrode is connected to the user's right upper limb by one electrode extension wire 4, and the C electrode is connected to the user's lower limb by another electrode extension wire 4. In the scene, in the measuring process, all limbs of the human body are in a natural state, the normal activity of a user cannot be influenced in the measuring process, the human body can carry out electrocardiogram measurement in various postures such as a standing posture, a sitting posture, a lying posture, a static state and a moving state, and continuous and long-time measurement can be carried out on electrocardiogram signals corresponding to six limb leads.

The present application further provides another embodiment of the bracelet, in this embodiment, the bracelet is deformed as follows on the basis of the bracelet 100 shown in fig. 7a to 7 d: the watch body of the bracelet is provided with jacks, and the jacks are connected with the B electrode/C electrode through a conductive structure arranged inside the watch body; the connecting terminal of one end of the electrode extension wire is replaced by a plug, and the plug can be inserted into a jack on the watch body. In the use state, the electrode extension line is inserted into the jack on the watch body through the plug so as to be electrically communicated with the B electrode/C electrode. Other structures of the bracelet may remain the same as those in the previous embodiment except for the above-described modification.

The bracelet 100 that this embodiment provided, the mode that electrode extension line and bracelet adopted the plug is connected, connects reliably easy operation.

The bracelet 100 provided in each embodiment of the present application, the watch body 1 of the bracelet 100 may further include other functional devices, for example, a processor, a touch screen (also called a touch panel), a display screen, a wireless communication module (e.g., bluetooth, Wi-Fi, etc.), a power source (e.g., a battery), and the like. The bracelet 100 can interact with other electronic devices (e.g., mobile phones, etc.) through a wireless communication module.

Referring to fig. 8a, in some usage scenarios, the electrocardiogram signal generated by the electrocardiogram signal generating unit may be transmitted to the handset 200 through the wireless communication module. After receiving the electrocardiogram signal, the mobile phone 200 processes and analyzes the electrocardiogram signal to generate an electrocardiogram waveform corresponding to the electrocardiogram signal. The mobile phone 200 may further process and analyze the received electrocardiogram signal to obtain corresponding electrocardiogram indexes, such as P-wave, P-R interval, Q-wave, Q-T interval, and the like. The mobile phone 200 may store the electrocardiogram waveform and/or the electrocardiogram index analysis result, and may also send the electrocardiogram waveform and/or the electrocardiogram index analysis result to the bracelet 100, so that the user may view the electrocardiogram waveform and/or the electrocardiogram index analysis result through a display screen of the bracelet 100.

Referring to fig. 8b, in other usage scenarios, the electrocardiogram signal generated by the electrocardiogram signal generating unit may be transmitted to a processor in the bracelet 100. After the processor receives the electrocardiogram signal, the electrocardiogram signal is processed and analyzed to generate an electrocardiogram waveform corresponding to the electrocardiogram signal. The processor may further process and analyze the received electrocardiogram signal to obtain corresponding electrocardiogram indexes, such as P-wave, P-R interval, Q-wave, Q-T interval, etc., and the user may view the electrocardiogram waveform and/or electrocardiogram index analysis result through the display screen of the bracelet 100.

In summary, the above-mentioned embodiments are provided only for illustrating the principles and effects of the present invention, and not for limiting the present invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. The wearable device is characterized by comprising a watch body and a watchband connected with the watch body, and further comprising three electrodes for collecting electric signals on the surface of a human body, wherein when the wearable device is worn on one upper limb of the human body, the three electrodes can be respectively contacted with the one upper limb of the human body, the other upper limb of the human body and one lower limb of the human body;

one of the three electrodes is a surface bottom electrode provided on the bottom surface of the watch body, and the other two electrodes are surface electrodes provided on the outer peripheral surface of the wearable device.

2. The wearable device of claim 1, wherein two surface electrodes are disposed on two of a front surface of the watch body, a side surface of the watch body, and the wristband.

3. The wearable device according to claim 2, wherein one of the two surface electrodes is provided on a side surface of the watch body, and the other is provided on a front surface of the watch body.

4. The wearable device according to claim 3, wherein projections of the two surface electrodes in a thickness direction of the watch body do not overlap.

5. The wearable device according to claim 3, wherein a crown is provided on a side of the watch body; the electrode arranged on the side face of the watch body is positioned on the watch crown.

6. The wearable device of claim 2, wherein one of the two surface electrodes is disposed on a front surface of the watch body and the other is disposed on the wristband.

7. The wearable device according to claim 2 or 6, wherein the electrode provided on the front surface of the watch body comprises one or more sub-electrodes in the form of strips in electrical communication with each other.

8. The wearable device according to claim 1, wherein at least one of the two surface electrodes is disposed on the wearable device by a retractable pull wire;

when the wearable device is worn on the upper limb of the human body, the at least one surface electrode is pulled and the telescopic pull wire is driven to be pulled out, so that the at least one surface electrode is separated from the outer peripheral surface of the wearable device and is contacted with the other upper limb of the human body or the lower limb of the human body; when the at least one surface electrode is in a free state, the telescopic pull wire automatically retracts, so that the at least one surface electrode can be reset to the outer peripheral surface of the wearable device.

9. The wearable device of claim 1, further comprising:

one end of the electrode extension wire is a connecting terminal which can be detachably connected with one of the two surface electrodes, and the other end of the electrode extension wire is an electrode which can collect electric signals on the surface of a human body;

wherein, in a use state, the wearable device is worn to the upper limb of the human body, the connecting terminal of the electrode extension line is connected to one of the two surface electrodes, and the electrode at the other end of the electrode extension line can be in contact with the other upper limb of the human body or the lower limb of the human body.

10. The wearable device according to claim 9, wherein the number of the electrode extension wires is two, and the two electrode extension wires are used for being connected to the two surface electrodes, respectively.

11. The wearable device of claim 1,

the meter body of the wearable device is provided with a jack, and the jack is connected with one of the two surface electrodes through a conductive structure arranged in the meter body; and

one end of the electrode extension wire is a plug-in connector which can be inserted into the jack, and the other end of the electrode extension wire is an electrode which can collect electric signals on the surface of a human body;

in a use state, the wearable device is worn on the upper limb of the human body, the plug-in connector of the electrode extension line is inserted into the plug hole of the watch body, and the electrode at the other end of the electrode extension line can be in contact with the other upper limb of the human body or the lower limb of the human body.