WO2021180172A1 - 能够测量心电图信号的可穿戴设备 - Google Patents

能够测量心电图信号的可穿戴设备 Download PDF

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Publication number
WO2021180172A1
WO2021180172A1 PCT/CN2021/080200 CN2021080200W WO2021180172A1 WO 2021180172 A1 WO2021180172 A1 WO 2021180172A1 CN 2021080200 W CN2021080200 W CN 2021080200W WO 2021180172 A1 WO2021180172 A1 WO 2021180172A1
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WO
WIPO (PCT)
Prior art keywords
electrode
wearable device
human body
electrodes
limb
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PCT/CN2021/080200
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English (en)
French (fr)
Inventor
张�杰
董辰
陈宜欣
李宏宝
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华为技术有限公司
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Publication of WO2021180172A1 publication Critical patent/WO2021180172A1/zh

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/25—Bioelectric electrodes therefor
    • A61B5/251—Means for maintaining electrode contact with the body
    • A61B5/256—Wearable electrodes, e.g. having straps or bands
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/25—Bioelectric electrodes therefor
    • A61B5/279—Bioelectric electrodes therefor specially adapted for particular uses
    • A61B5/28—Bioelectric electrodes therefor specially adapted for particular uses for electrocardiography [ECG]
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/25—Bioelectric electrodes therefor
    • A61B5/279—Bioelectric electrodes therefor specially adapted for particular uses
    • A61B5/28—Bioelectric electrodes therefor specially adapted for particular uses for electrocardiography [ECG]
    • A61B5/282—Holders for multiple electrodes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/316—Modalities, i.e. specific diagnostic methods
    • A61B5/318—Heart-related electrical modalities, e.g. electrocardiography [ECG]
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/316—Modalities, i.e. specific diagnostic methods
    • A61B5/318—Heart-related electrical modalities, e.g. electrocardiography [ECG]
    • A61B5/332—Portable devices specially adapted therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
    • A61B5/6802—Sensor mounted on worn items
    • A61B5/681—Wristwatch-type devices

Definitions

  • the present invention relates to the technical field of electronic equipment, and in particular to a wearable device capable of measuring electrocardiogram signals.
  • some wristbands in the prior art integrate an electrocardiogram (ECG, Electronic diagram) monitoring function to monitor the heart function of the user.
  • ECG electrocardiogram
  • the bottom surface of the watch body of the wristband is provided with a first electrode
  • the front surface of the watch body is provided with a second electrode.
  • the first electrode is in contact with the wrist wearing the bracelet
  • the second electrode is in contact with the user's other wrist.
  • the ECG signal corresponding to the I lead of both hands can only reflect the ischemic state of the side wall of the heart, and the ability to distinguish arrhythmia is also limited (for example, it is difficult to distinguish between ventricular tachycardia and supraventricular tachycardia with indoor differences only through the I lead of both hands. Conduction), therefore, the above-mentioned prior art does not fully monitor the heart function.
  • Some embodiments of the present application provide a wearable device capable of measuring electrocardiogram signals, which can provide more comprehensive and accurate monitoring of heart function.
  • the embodiments of the present application provide a wearable device capable of measuring electrocardiogram signals.
  • the wearable device includes a watch body and a strap connected to the watch body; the wearable device also includes three electrodes for collecting electrical signals on the surface of the human body, When the wearable device is worn on an upper limb of the human body, the three electrodes can respectively contact an upper limb of the human body, another upper limb of the human body, and a lower limb of the human body.
  • one of the three electrodes is set on the surface body.
  • the surface and bottom electrodes on the bottom surface, and the other two electrodes are surface electrodes provided on the outer peripheral surface of the wearable device.
  • the bottom surface of the watch body is: when the wearable device is worn on the wrist, the surface of the watch body facing 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 the wrist The surface of the department.
  • the wearable device is provided with three electrodes for contact with human limbs, and can collect the surface electrical signals of two upper limbs and one lower limb of the human body.
  • the electrical signals collected by the three electrodes pass through the wearable device After processing by the ECG signal generation unit, the wearable device can obtain the ECG signals corresponding to the six limb leads.
  • the embodiment of the present application can monitor the ischemic state of more myocardial positions, so as to provide a more accurate judgment of the myocardial ischemic position; in addition, the electrocardiogram signals corresponding to the six limb leads are also included in Diagnosis of arrhythmia is more recognized by professional doctors in lead II and aVR electrocardiogram signals, so more types of arrhythmia can be accurately screened.
  • the embodiments of the present application can provide a more comprehensive and accurate monitoring of cardiac function, which is beneficial for users to discover cardiac abnormalities in time.
  • the wearable device of the embodiment of the present application can be worn to the upper limbs of the human body. Therefore, the user can perform ECG measurement while maintaining a normal sitting posture, and the measurement does not need to be restricted by the use occasion.
  • the user can be in a residence, company, or outdoor public It is easy to use to measure anytime and anywhere in the field and other occasions.
  • the three electrodes can be in contact with the two upper limbs and one lower limb of the human body to obtain the ECG signals corresponding to the leads of the six limbs; it can also be the three electrodes. Two of the electrodes are in contact with the limbs of the human body, and the other is an idle electrode, so that the ECG signal corresponding to one of the limb leads (limb I lead, limb II lead or limb III lead) can be obtained.
  • one of the three electrodes is provided on the bottom surface of the watch body.
  • the electrode can be in natural contact with the user's wrist, which not only facilitates the setting of the electrodes
  • the number of electrodes exposed on the outer peripheral surface of the wearable device can be reduced, so that the wearable device has a beautiful appearance.
  • the two surface electrodes are respectively provided on two of the front surface of the watch body, the side surface of the watch body, and the watch band. After this setting, the two surface electrodes are located on two different surfaces of the wearable device, which can prevent one limb from contacting the two surface electrodes at the same time, so that the measurement result is accurate.
  • one of the two surface electrodes is arranged on the side surface of the watch body, and the other is arranged on the front surface of the watch body.
  • the three electrodes are all arranged on the watch body, which can simplify the electrical connection structure between the electrodes and the electrocardiogram signal processing unit, thereby simplifying the structure of the wearable device.
  • the electrode provided on the side of the watch body is used to contact another upper limb of the human body, and the electrode provided on the front surface of the watch body is used to contact the lower limb of the human body.
  • the projections of the two surface electrodes along the thickness direction of the surface body do not overlap. In this way, when the user's right hand touches the electrodes on the side of the watch body, they will not accidentally touch the electrodes on the front of the watch body at the same time, so that the measurement result is accurate.
  • the side surface of the watch body is provided with a crown; the electrodes arranged on the side surface of the watch body are located on the crown.
  • the electrodes on the side surface of the watch body may be electrode pads arranged on the peripheral surface of the crown and/or the end surface of the crown, or may be the crown itself. In this way, combining the electrode and the crown into one can simplify the structure of the wearable device and make the wearable device beautiful in appearance.
  • one of the two surface electrodes is provided on the front surface of the watch body, and the other is provided on the watch band.
  • the user's limbs can be in a natural state, which can improve the comfort during the measurement and improve the user experience.
  • the electrode placed on the front of the watch body is used to contact the other upper limb of the human body, and the electrode placed on the watchband is used to contact the lower limb of the human body; in other usage scenarios, the electrode placed on the front of the watch body The electrode is used to contact the lower limb of the human body, and the electrode set on the watchband is used to contact the other upper limb of the human body
  • the electrode provided on the front surface of the watch body includes one segment or multiple segments of strip-shaped sub-electrodes electrically connected to each other. After this setting, not only can the surface area of the electrode be increased, thereby facilitating the contact between the user and the electrode, but also the appearance of the watch body can be more beautiful.
  • At least one surface electrode of the two surface electrodes is set on the wearable device through a retractable pull wire; when the wearable device is worn on an upper limb of the human body, when the at least one surface electrode is pulled and the retractable pull wire is pulled out , Can make at least one surface electrode detach from the outer peripheral surface of the wearable device and contact another upper limb of the human body or a lower limb of the human body; when the at least one surface electrode is in a free state, the retractable wire automatically retracts, and the at least one surface electrode can be reset To the outer peripheral surface of the wearable device.
  • the convenience and comfort during electrocardiogram measurement can be improved, or the long-term continuous measurement of the electrocardiogram of one limb lead can be realized.
  • the two surface electrodes are both set on the wearable device through the telescopic cable, the long-term continuous measurement of the electrocardiogram of the six limb leads can be realized.
  • the wearable device further includes at least one electrode extension wire, one end of the electrode extension wire is a connection terminal that can be detachably connected to one of the two surface electrodes, and the other end is a connection terminal that can collect human body Electrodes for surface electrical signals; among them, in use, the wearable device is worn to an upper limb of the human body, the connection 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 Contact with the other upper limb of the human body or the lower limb of the human body.
  • the number of electrode extension cords is one, and the connection terminal of the electrode extension cord is detachably connected to one of the two surface electrodes, which can improve the convenience and comfort during electrocardiogram measurement. , Or it can realize the long-term continuous measurement of the ECG of one limb lead.
  • the number of electrode extension wires is two, and the two connection terminals of the two electrode extension wires are respectively connected to the two surface electrodes, so that long-term continuous measurement of the electrocardiogram of six limb leads can be realized.
  • the connecting terminal of the electrode extension line has a slot
  • the surface electrode has a protrusion
  • the connecting terminal can be engaged with the protrusion on the surface electrode through the slot.
  • connection terminal of the electrode extension line has a magnetic attraction member, and the connection terminal can be magnetically connected to the surface electrode through the magnetic attraction member.
  • the watch body of the wearable device is provided with a jack, and the jack is connected to one of the two surface electrodes through a conductive structure provided inside the watch body; and at least one electrode extension wire,
  • One end of the electrode extension line is a plug connector that can be inserted into the jack, and the other end of the electrode extension line is an electrode that can collect electrical signals on the surface of the human body; wherein, in use, the wearable device is worn to an upper limb of the human body, The plug connector of the electrode extension cord is inserted into the socket of the watch body, and the electrode at the other end of the electrode extension cord can contact the other upper limb of the human body or the lower limb of the human body.
  • the wearable device is provided with a jack
  • the electrode extension line is provided with a plug that can be inserted into the jack
  • the electrode extension line is connected to the wearable device by plugging and unplugging, and the connection is reliable ,easy to use.
  • Figures 1a to 1f respectively show schematic diagrams of electrode distribution corresponding to six limb leads
  • FIG. 2 shows a schematic diagram of the structure of a wristband provided by an embodiment of the present application
  • Figures 3a to 3e show a first example of the arrangement of wristband electrodes provided by an embodiment of the present application
  • Figures 4a to 4c show a second example of the arrangement of wristband electrodes provided by an embodiment of the present application
  • Figures 5a to 5c show a third example of the arrangement of wristband electrodes provided by an embodiment of the present application.
  • Figures 6a to 6d show schematic structural diagrams (including telescopic pull wires) of a wristband provided by an embodiment of the present application;
  • FIGS. 7a to 7d show schematic structural diagrams (including electrode extension wires) of a wristband provided by another embodiment of the present application.
  • FIG. 8a shows a scene when the wristband provided by an embodiment of the present application is used for electrocardiogram measurement
  • Fig. 8b shows another scenario when the wristband provided in an embodiment of the present application is used for electrocardiogram measurement.
  • orientation or positional relationship indicated by the terms “upper”, “lower”, “top”, “bottom”, etc. are based on the orientation or positional relationship shown in the drawings, or
  • the orientation or positional relationship that the product of the application is usually placed in use is only for the convenience of describing the application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, Therefore, it cannot be understood as a restriction on this application.
  • the terms "setting” and "connection” should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection. Or integrally connected; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication between the two components.
  • the specific meanings of the above-mentioned terms in this embodiment can be understood in specific situations.
  • the common lead system used for electrocardiogram measurement in medicine is the standard 12-lead.
  • the limb lead system reflects the situation of the cardiac potential projection on the frontal surface, including leads I, II, III, avR, avL and avF;
  • the lead system reflects the level of cardiac potential projection, including: leads V1, V2, V3, V4, V5, and V6.
  • the six limb leads are:
  • the left upper limb electrode E1 and the right upper limb electrode E2 form a limb I lead ( Figure 1a); the right upper limb electrode E2 and the lower limb electrode E3 form a limb II lead ( Figure 1b); the left upper limb electrode E1 and the lower limb electrode E3 form a lead Limb lead III is formed between ( Figure 1c);
  • the electrode on any one of the left upper limb, right upper limb, or lower limb is used as a probe electrode, and an unrelated electrode is connected in series between the electrodes on the remaining two limbs (for example, one can be connected in series between the electrodes on the remaining two limbs).
  • an irrelevant electrode Resistance as an irrelevant electrode, a pressurized unipolar lead is formed between the probe electrode and the irrelevant electrode, that is,
  • the right upper limb electrode E2 is used as a probe electrode, and an irrelevant electrode E4 is connected in series between the left upper limb electrode E1 and the lower limb electrode E3, and the right upper limb electrode E2 and the irrelevant electrode E4 form a monopolar right upper limb aVR lead ( Figure 1d) ;
  • the left upper limb electrode E1 is used as a probe electrode, and the two irrelevant electrodes E5 are connected in series between the right upper limb electrode E2 and the lower limb electrode E3, and the left upper limb electrode E1 and the irrelevant electrode two E5 form a monopolar left upper limb aVL lead ( Figure 1e );
  • the lower limb electrode E3 is used as a probe electrode, and the unrelated electrode E6 is connected in series between the left upper limb electrode E1 and the right upper limb electrode E2. Between the lower limb electrode E3 and the unrelated electrode E6, a pressure unipolar left lower limb aVF lead is formed ( Figure 1f ).
  • upper limb refers to the part below the shoulder, including the hand; “lower limb” refers to the part below the hip joint, including the foot.
  • lower extremity refers to either the left lower extremity or the right lower extremity.
  • the wearable device can measure the ECG signal corresponding to the I lead of both hands, but the ECG signal corresponding to the I lead of both hands can only reflect the ischemic state of the side wall of the heart, and the ability to discriminate arrhythmia is also compared. limited.
  • the embodiments of the present application provide a wearable device (for example, a bracelet, a watch, an armband, etc.), which is used to provide a more comprehensive monitoring of the heart function.
  • the following uses a bracelet as an example to introduce the technical solutions of the implementation of the present application.
  • Fig. 2 shows a wristband 100 provided by an embodiment of the present application.
  • the wristband 100 includes an electrocardiogram signal generating unit (not shown) and three electrodes (not shown) connected to the electrocardiogram signal generating unit.
  • the three electrodes can be connected to the One upper limb, the other upper limb of the human body, and the lower limb of the human body are in contact with each other to collect the electrical signals on the surface of the respective limbs.
  • the electrocardiogram signal generating unit can process the electrical signals collected by the three electrodes to generate the leads corresponding to the six limbs.
  • Corresponding ECG signal Corresponding ECG signal.
  • the material of the "electrode" can be any conductive material such as copper, aluminum, silver, stainless steel, and graphite.
  • the "electrocardiogram signal generating unit” can receive the electrical signal on each electrode, process the received electrical signal to obtain the potential difference between the electrodes, and can amplify the difference between the electrodes through the amplifying circuit. The potential difference between the two, and then obtain the ECG signal corresponding to each limb lead.
  • the "electrocardiogram signal generating unit” may be a micro-control unit or other units with signal processing functions.
  • the wristband 100 of the embodiment of the present application is provided with three electrodes for contact with the human limbs, so that the ECG signals corresponding to the six limb leads can be obtained.
  • the embodiment of the present application can compare Monitoring the ischemic status of multiple myocardial positions can provide a more accurate judgment of the position of myocardial ischemia.
  • the electrocardiogram signals corresponding to the six limb leads are included in the diagnosis of arrhythmia, and are more recognized by professional doctors in the II lead, AVR lead electrocardiogram signal, so more types of arrhythmia can be accurately screened.
  • the embodiments of the present application can provide a more comprehensive and accurate monitoring of cardiac function, which is beneficial for users to discover cardiac abnormalities in time.
  • the wristband 100 is worn to the human wrist. Therefore, the user can perform ECG measurement while maintaining a normal sitting posture. The measurement does not need to be restricted by the use occasion. Measure anytime and anywhere, etc., convenient to use.
  • the three electrodes can be in contact with the two upper limbs and one lower limb of the human body to obtain the ECG signals corresponding to the leads of the six limbs; it can also be the three electrodes. Two of the electrodes are in contact with the limbs of the human body, and the other is an idle electrode, so that the ECG signal corresponding to one of the limb leads (limb I lead, limb II lead or limb III lead) can be obtained.
  • the wristband 100 may also be provided with a reference electrode for noise elimination, and the reference electrode is the fourth electrode in addition to the above three electrodes.
  • the reference electrode is connected to the electrocardiogram signal generating unit, and can be in contact with the surface of the human body to collect electrical signals on the surface of the human body. In the process of generating the electrocardiogram signal by the electrocardiogram signal generating unit, the electrical signal collected by the reference electrode can be used to eliminate noise.
  • the wristband 100 includes a watch body 1 and a wristband 2 connected to the watch body 1.
  • the wristband 2 is used to wear the watch body 1 to the user's wrist, and the electrocardiogram signal generating unit may be located Table body 1.
  • the present application does not limit the connection mode of the watch body 1 and the wristband 2.
  • the wristband 2 can be realized by a flexible strip, and the two ends of the flexible strip are respectively connected to the two ends of the watch body 1.
  • the wristband 2 is also It can be achieved by two flexible strips, one end of each of the two flexible strips is connected to one of the two ends of the watch body 1, each of the two flexible strips
  • the other end of the device can be detachably connected through a connecting structure (for example, a buckle, a hook, an adhesive strip, etc.).
  • the three electrodes on the wristband 100 are the A electrode, the B electrode, and the C electrode.
  • the A electrode is arranged on the bottom surface of the watch body 1, which is referred to herein as the "surface bottom electrode”
  • the B electrode The C and C electrodes are arranged on the outer peripheral surface of the wristband 100 and are referred to herein as "surface electrodes”.
  • the A electrode is provided on the bottom surface of the watch body 1.
  • the A electrode can come into natural contact with the user's wrist. This not only facilitates the setting of the electrode, but also reduces exposure.
  • the number of electrodes on the outer peripheral surface of the wristband 100 makes the appearance of the wristband 100 beautiful.
  • the B electrode and the C electrode are respectively provided on two of the front surface of the watch body 1, the side surface of the watch body 1, and the wristband 2.
  • the B electrode and the C electrode are arranged on two different surfaces, which can prevent one limb from contacting the B electrode and the C electrode at the same time, so that the measurement result is accurate.
  • the outer peripheral surface of the wristband 100 is the surface that does not face the wrist when the wristband 100 is worn on the wrist; the bottom surface of the watch body 1 is when the wristband 100 is worn on the wrist, the watch body 1 The surface facing the wrist; the front of the watch body 1 is the surface of the watch body 1 facing away from the wrist when the bracelet 100 is worn on the wrist.
  • the surface where the display screen is set in Figure 2 is the front of the watch body 1
  • the side surface of the watch body 1 is the surface between the front surface of the watch body 1 and the bottom surface of the watch body 1.
  • the surface where the crown 11 is set in FIG. 2 is the side surface of the watch body 1.
  • the usage scenario of the wristband 100 is introduced.
  • the electrode A in the following description can be replaced with the user's right wrist.
  • the contacting electrode is replaced by contact with the left wrist.
  • Figures 3a to 3e show an example of how the electrodes of the wristband 100 are arranged.
  • the A electrode is arranged on the bottom surface of the watch body 1
  • the B electrode is arranged on the side surface of the watch body 1
  • the C electrode is arranged on the front surface of the watch body 1.
  • the 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 wristband 100.
  • the A electrode is in contact with the user's left wrist
  • the B electrode is in contact with the user's upper right limb
  • the C electrode is in contact with the user's lower limb.
  • the user can maintain a sitting posture, wear the wristband 100 to the left wrist, and the A electrode is in natural contact with the user's left wrist.
  • the front of the watch body 1 is facing down, and then the left hand is naturally placed on the lower extremity, so that the C electrode is in contact with the user's lower extremity.
  • the user can naturally place the left hand on the left lower extremity so that the C electrode is in contact with the left lower extremity, so that the user can maintain a relatively relaxed posture when measuring the electrocardiogram.
  • the B electrode is set on the side of the watch body 1. Therefore, when the left hand is naturally placed on the lower limb, the B electrode will not contact the left upper limb or the lower limb. At this time, the user can use one finger of the right hand (for example, Thumb) touch the B electrode, so that the three electrodes on the wristband 100 respectively contact the two upper limbs and one lower limb of the human body to collect the electrical signals of the corresponding limb surfaces.
  • the electrocardiogram signal generating unit can collect the signals according to the three electrodes. The electrical signals are processed to generate ECG signals corresponding to the six limb leads.
  • the actual use method of the hand ring 100 is not limited.
  • the user may also remove the wristband 100 from the wrist to perform electrocardiogram measurement.
  • the user can maintain a sitting posture, flip body 1 so that the front of body 1 is facing down, and then place body 1 on the user's lower limbs, so that the C electrode on the front of body 1 is in contact with The user's lower extremity touches.
  • the user can press the bottom of the watch with one hand (for example, the left hand) so that the hand is in contact with the A electrode, and the other hand (for example, the right hand) is in contact with the B electrode, so that the three electrodes on the wristband 100
  • the electrocardiogram generating unit can generate electrocardiogram signals corresponding to the leads of the six limbs.
  • the user can maintain a more comfortable posture when measuring the electrocardiogram.
  • the user may also only contact two of the three electrodes to obtain an ECG signal corresponding to one limb lead.
  • the electrocardiogram signal generating unit can obtain the electrocardiogram signal corresponding to the lead I of the limb.
  • a crown 11 is provided on the side of the watch body 1, and the B electrode is provided on the crown 11.
  • the B electrode may be an electrode sheet provided on the peripheral surface of the crown 11 and/or the end surface of the crown 11, or it may be the crown 11 itself.
  • the electrodes and the crown 11 are combined into one, which can simplify the structure of the wristband 100 and make the appearance of the wristband 100 beautiful.
  • the C electrode includes one or more segments of strip-shaped sub-electrodes electrically connected to each other.
  • the C electrode may include a segment of strip-shaped sub-electrodes; or, referring to FIG. 3e, the C electrode includes two segments of strip-shaped sub-electrodes, and the two segments of strip-shaped sub-electrodes are respectively arranged on the upper and lower sides of the display screen.
  • the two strip-shaped sub-electrodes are electrically connected by setting the internal structure of the watch body 1. This implementation method can not only increase the surface area of the electrode, facilitate the user to contact the electrode, but also make the appearance of the watch body 1 more beautiful.
  • the projections of the B electrode and the C electrode along the thickness direction of the watch body 1 do not overlap. In this way, the user’s right hand does not touch the B electrode at the same time. Touching the C electrode by mistake makes the measurement result accurate.
  • Figures 4a to 4c show the second example of how the electrodes of the wristband 100 are arranged.
  • the A electrode is arranged on the bottom surface of the watch body 1
  • the B electrode is arranged on the front surface of the watch body 1
  • the C electrode is arranged on the wrist strap 2.
  • the user's limbs can be in a natural state, which can improve the comfort during the measurement and improve the user experience.
  • the A electrode is in contact with the user's left wrist
  • the B electrode is in contact with the user's upper right limb
  • the C electrode is in contact with the user's lower limb.
  • the user can maintain a sitting posture, wear the wristband 100 to the left wrist, and the A electrode is in natural contact with the user's left wrist.
  • the front of the C electrode faces the lower extremity, and then the left hand is naturally placed on the lower extremity, so that the C electrode is in contact with the user's lower extremity.
  • the user can naturally place the left hand on the left lower extremity so that the C electrode is in contact with the left lower extremity, so that the user can maintain a relatively relaxed posture when measuring the electrocardiogram.
  • the B electrode is set on the front of the watch body 1. Therefore, when the left hand is naturally placed on the lower limb, B will not contact the lower limb, and the user can naturally place the right hand on the B electrode.
  • the watch body 1 can be slightly pressed, which is beneficial to ensure reliable contact between the A electrode and the left wrist.
  • the three electrodes on the wristband 100 are in contact with the two upper limbs and one lower limb of the human body, and can collect the electrical signals of the corresponding limb surfaces.
  • the electrocardiogram signal generating unit can process the electrical signals collected by the three electrodes. To generate ECG signals corresponding to the six limb leads.
  • the A electrode is in contact with the user's left wrist
  • the B electrode is in contact with the user's lower limb
  • the C electrode is in contact with the user's upper right limb.
  • the user can maintain a sitting posture, wear the wristband 100 to the left wrist of the human body, and the A electrode is in natural contact with the left wrist of the user.
  • the front of the watch body 1 is facing down, and then the left hand is naturally placed on the lower limbs, so that the B electrode on the front of the watch body 1 is in contact with the user's lower limbs.
  • the user can naturally place the left hand on the left lower extremity so that the B electrode is in contact with the left lower extremity, so that the user can maintain a relatively relaxed posture when measuring the electrocardiogram.
  • the C electrode is set on the wrist strap 2. Therefore, when the left hand is naturally placed on the lower extremity, the C electrode will not contact the lower extremity. At this time, the user can naturally place the right hand on the C electrode to make the hand
  • the three electrodes on the ring 100 are in contact with the two upper limbs and one lower limb of the human body respectively to collect the electrical signals of the corresponding limb surfaces.
  • the electrocardiogram signal generating unit can process the electrical signals collected by the three electrodes to generate and The ECG signal corresponding to each limb lead.
  • the user may also only contact two of the three electrodes to obtain an electrocardiogram signal corresponding to one limb lead.
  • the electrocardiogram signal generating unit can obtain the electrocardiogram signal corresponding to the lead I of the limb.
  • the B electrode includes one or more segments of strip-shaped sub-electrodes electrically connected to each other.
  • the setting method can refer to the setting method of the C electrode in the first example, which will not be repeated. This implementation not only can increase the surface area of the electrode, thereby facilitating the user to contact the electrode, but also can make the appearance of the watch body 1 more beautiful.
  • the position of the C electrode on the wristband 2 is such that when the wristband 100 is worn on the user's wrist, the C electrode and the watch body 1 can be located on opposite sides of the user's wrist. Further improve the comfort during measurement.
  • the wristband 2 of the wristband 100 includes a first wristband 21 and a second wristband 22 respectively disposed at both ends of the watch body 1, and the C electrode can be disposed on the first wristband 21 away from the watch body At the end of 1, in other implementations, the C electrode may also be provided at the end of the second wristband 22 away from the watch body 1.
  • Figures 5a to 5c show the third example of the electrode arrangement of the wristband 100.
  • the A electrode is arranged on the bottom surface of the watch body 1
  • the B electrode is arranged on the side surface of the watch body 1
  • the C electrode is arranged on the wrist strap 2.
  • the A electrode is in contact with the user's left wrist
  • the B electrode is in contact with the user's upper right limb
  • the C electrode is in contact with the user's lower limb.
  • the user can maintain a sitting posture, wear the wristband 100 to the left wrist, and the A electrode is in natural contact with the user's left wrist.
  • the front of the C electrode is facing down, and then the left hand is naturally placed on the leg, so that the C electrode is in contact with the user's lower limbs.
  • the user can naturally place the left hand on the left lower extremity so that the C electrode is in contact with the left lower extremity, so that the user can maintain a relatively relaxed posture when measuring the electrocardiogram.
  • the B electrode is set on the side of the watch body 1. Therefore, when the left hand is naturally placed on the lower limb, the B electrode will not touch the upper right limb. At this time, the user can use one finger of the right hand (for example, the thumb) Contact the B electrode, so that the three electrodes on the wristband 100 are in contact with the two upper limbs and one lower limb of the human body respectively to collect the electrical signals of the corresponding limb surfaces.
  • the electrocardiogram signal generating unit can be based on the electrical signals collected by the three electrodes. The signals are processed to generate ECG signals corresponding to the six limb leads.
  • the position of the C electrode on the wristband 2 is such that when the wristband 100 is worn on the user's wrist, the C electrode and the watch body 1 can be located on opposite sides of the user's wrist. Further improve the comfort during measurement.
  • the wristband of the wristband 100 includes a first wristband 21 and a second wristband 22 respectively disposed at both ends of the watch body 1.
  • the C electrode can be disposed on the first wristband 21 away from the watch The end of the body 1 ( Figure 5b), or the C electrode can be provided at the end of the second wristband 22 away from the body 1 ( Figure 5c).
  • the user can also only contact two of the three electrodes with the limbs of the human body to obtain an electrocardiogram signal corresponding to one limb lead. For example, if the user wears the wristband 100 on the left wrist while touching the B electrode with the right hand, the ECG signal corresponding to the lead I of the limb can be obtained.
  • At least one of the B electrode and the C electrode may also be arranged on the wristband 100 through the retractable pull wire 3.
  • the convenience and comfort during the electrocardiogram measurement can be improved, or the long-term continuous measurement of the electrocardiogram of one limb lead can be realized.
  • both the B electrode and the C electrode are set on the wristband 100 through the telescopic cable 3, long-term continuous measurement of the electrocardiogram of the six limb leads can be realized.
  • the application scenarios of the long-term continuous measurement of the electrocardiogram are, for example, measurement during sleep, measurement during exercise, and measurement during work.
  • Example 1 takes the electrode setting method of Example 1 as an example to introduce the setting principle of the retractable cable 3.
  • the setting principle of the retractable cable 3 is similar to the principle of Example 1, and will not be repeated.
  • 6a to 6c show the case where the C electrode of the above example 1 is set on the wristband 100 through the retractable pull wire 3.
  • the A electrode is in contact with the user's left wrist
  • the B electrode is in contact with the user's upper right limb
  • the C electrode is in contact with the user's lower limb.
  • 6a shows the state where the electrode C is located on the outer peripheral surface of the wristband 100
  • FIG. 6b shows the intermediate state when the electrode C is pulled
  • FIG. 6c shows the state when the electrode C is pulled to contact with the upper right limb.
  • the wristband 100 is worn on the left wrist of the human body, and the A electrode is in natural contact with the left wrist of the user.
  • the C electrode can be separated from the outer peripheral surface of the wristband 100 and can be in contact with the lower limbs of the human body, and then the C electrode can be fixed on the surface of the human body by a fixing device such as an electrode sticker.
  • a fixing device such as an electrode sticker.
  • touch the B electrode with one finger (for example, thumb) of the right hand so that the three electrodes on the wristband 100 are in contact with the two upper limbs and one lower limb of the human body respectively, so as to collect the electrical signals on the surfaces of the respective limbs, and the electrocardiogram
  • the signal generating unit can process the electrical signals collected by the three electrodes to generate electrocardiogram signals corresponding to the six limb leads.
  • the electrode stickers are torn off to make the B electrode in a free state.
  • the retractable pull wire 3 automatically retracts, so that the C electrode can be reset to the outer peripheral surface of the wristband 100.
  • the C electrode when measuring the ECG, the C electrode is in contact with the lower extremities through the telescopic cable 3, and the body 1 does not need to directly contact the lower extremities. Therefore, the user can perform the ECG measurement in various postures such as sitting, standing, and lying positions, which improves Convenience and comfort during measurement.
  • the above structure can also realize long-term continuous measurement of one limb lead.
  • the A electrode is in contact with the user's left wrist
  • the C electrode is in contact with the user's lower limbs
  • the B electrode is an idle electrode.
  • the wristband 100 is worn on the left wrist of the human body, and the A electrode is in natural contact with the left wrist. Then, the C electrode is pulled and the telescopic cable 3 is pulled out.
  • the C electrode can be separated from the outer peripheral surface of the wristband 100 and can be in contact with the lower limbs of the human body. Then, the C electrode is fixed on the surface of the human body by a fixing device such as an electrode sticker.
  • the electrocardiogram signal corresponding to the limb III lead can be continuously measured for a long time.
  • FIG. 6d shows a situation in which the B electrode and the C electrode of the above example 1 are both set on the wristband 100 through the retractable pull wire 3.
  • the A electrode is in contact with the user's left wrist
  • the B electrode is in contact with the user's upper right limb
  • the C electrode is in contact with the user's lower limb.
  • the wristband 100 is worn on the left wrist of the human body, and the A electrode is in natural contact with the left wrist of the user. Then, the B electrode is pulled and the telescopic cable 3 is pulled out.
  • the B electrode can be separated from the outer peripheral surface of the wristband 100 and can contact the right upper limb of the human body.
  • the B electrode is fixed on the surface of the human body by a fixing device such as an electrode sticker.
  • the C electrode can be separated from the outer peripheral surface of the wristband 100 and can be in contact with the lower limbs of the human body.
  • the C electrode is fixed on the surface of the human body by a fixing device such as an electrode sticker.
  • the human body can perform electrocardiogram measurement in various postures such as standing, sitting, lying, resting, and motion states, and can perform continuous long-term measurement of the electrocardiogram signals corresponding to the six limb leads.
  • the electrode stickers are torn off to make the B electrode and the C electrode in a free state.
  • the retractable pull wire 3 automatically retracts, so that the B electrode and the C electrode can be reset to the outer peripheral surface of the wristband 100.
  • Figures 7a to 7d show another embodiment of the wristband 100 provided by the present application.
  • the wristband 100 further includes at least one electrode extension wire 4, and one end of the electrode extension wire 4 can be connected to the B electrode Or the C electrode realizes a detachable connection terminal, and the other end is an electrode that can collect electrical signals on the surface of the human body.
  • the electrode extension wire 4 that is, when the electrode extension wire 4 is one
  • the convenience and comfort of the electrocardiogram measurement can be improved, or the electrocardiogram of one limb lead can be realized Long-term continuous measurement.
  • both the B electrode and the C electrode are connected to the electrode extension wire 4 (that is, when there are two electrode extension wires 4), long-term continuous measurement of the electrocardiogram of the six limb leads can be realized.
  • the application scenarios of the long-term continuous measurement of the electrocardiogram are, for example, measurement during sleep, measurement during exercise, and measurement during work.
  • the connecting terminal has a card slot
  • the B electrode or the C electrode has a protrusion
  • the connecting terminal can be clamped with the protrusion on the B electrode or the protrusion on the C electrode through the card slot.
  • the connection terminal has a magnetic attraction member
  • the connection terminal can be magnetically connected to the B electrode or the C electrode through the magnetic attraction member (for example, The connection between the electrode extension wire 4 and the C electrode shown in FIG. 7c).
  • the principle of setting the electrode extension line 4 will be introduced by taking the electrode setting methods of Example 1 and Example 3 as examples.
  • the arrangement principle of the electrode extension line 4 is similar to the principles of Example 1 and Example 3, and will not be repeated.
  • FIG. 7a shows the connection of the C electrode and the electrode extension wire 4 in the above example.
  • the A electrode is in contact with the user's left wrist
  • the B electrode is in contact with the user's upper right limb
  • the C electrode is connected to the lower limb through the electrode extension wire 4.
  • the wristband 100 is worn on the left wrist of the human body, and the left wrist of the user with the A electrode is in natural contact.
  • the right hand touches the electrode B, so that the three electrodes on the wristband 100 are respectively connected to the two upper limbs and one lower limb of the human body to collect the electrical signals of the corresponding limb surfaces.
  • the electrocardiogram signal generation unit can collect the three electrodes
  • the received electrical signals are processed to generate ECG signals corresponding to the six limb leads.
  • the C electrode is connected to the lower limbs of the human body through the electrode extension line 4, and the body 1 does not need to directly contact the lower limbs. Therefore, the user can perform the ECG measurement in various postures such as sitting, standing, and lying positions. Improve the convenience and comfort during measurement.
  • the above structure can also realize long-term continuous measurement of one limb lead.
  • the A electrode is in contact with the user's left wrist
  • the C electrode is connected to the right upper limb through the electrode extension line 4
  • the B electrode is an idle electrode.
  • the wristband 100 is worn on the left wrist of the human body, and the A electrode is in natural contact with the left wrist.
  • the C electrode is connected to the lower limbs of the human body through the electrode extension wire 4, and then the C electrode is fixed on the surface of the human body through a fixing device such as an electrode sticker.
  • the limbs of the human body are in a natural state, and the normal activities of the human body will not be affected when the electrocardiogram is measured. Therefore, the electrocardiogram signal corresponding to the limb III lead can be continuously measured for a long time.
  • FIG. 7b shows a situation where the B electrode and the C electrode of the above example 1 are both connected to the electrode extension line 4.
  • the A electrode is in contact with the user's left wrist
  • the B electrode is connected to the user's right upper limb through the electrode extension line 4
  • the C electrode and electrode extension line 4 is connected to the user's lower limb.
  • the wristband 100 is worn on the left wrist of the human body, and the left wrist of the user with the A electrode is in natural contact.
  • the three electrodes on the wristband 100 are respectively connected to the two upper limbs and one lower limb of the human body, and can collect the electrical signals of the corresponding limb surfaces.
  • the electrocardiogram signal generating unit can process the electrical signals collected by the three electrodes.
  • the limbs of the human body are in a natural state, and the measurement process will not affect the normal activities of the user.
  • the human body can perform ECG in various postures such as standing, sitting, lying, resting, and moving.
  • the measurement can be used for continuous long-term measurement of the ECG signals corresponding to the six limb leads.
  • FIG. 7c shows the connection of the C electrode and the electrode extension line 4 in Example 3.
  • the A electrode is in contact with the user's left wrist
  • the B electrode is in contact with the user's upper right limb
  • the C electrode is connected to the lower limb through the electrode extension wire 4.
  • the C electrode is connected to the lower limbs of the human body through the electrode extension line 4, and the body 1 does not need to directly contact the lower limbs. Therefore, the user can perform the ECG measurement in various postures such as sitting, standing, and lying positions. Improve the convenience and comfort during measurement.
  • the C electrode is connected to the lower limbs of the human body through the electrode extension line 4, and the body 1 does not need to directly contact the lower limbs.
  • the human limbs are in a natural state, and the measurement process will not be affected. The normal activity of the human body, therefore, the ECG signal corresponding to lead III of the limb can be measured continuously for a long time.
  • FIG. 7d shows a situation in which the B electrode and the C electrode of Example 3 are both connected to the electrode extension line 4.
  • the A electrode is in contact with the user's left wrist
  • the B electrode is connected to the user's right upper limb through an electrode extension line 4
  • the C electrode is connected to the user's lower limb through another electrode extension line 4.
  • the limbs of the human body are in a natural state, and the measurement process will not affect the normal activities of the user.
  • the human body can perform ECG in various postures such as standing, sitting, lying, resting, and moving.
  • the measurement can be used for continuous long-term measurement of the ECG signals corresponding to the six limb leads.
  • This application also provides another embodiment of a bracelet.
  • the bracelet is modified as follows on the basis of the bracelet 100 shown in Figs.
  • the jack is connected to the B electrode/C electrode through a conductive structure arranged inside the watch body; the connecting terminal at one end of the electrode extension line is replaced with a plug, and the plug can be inserted into the jack on the watch body.
  • the electrode extension wire is inserted into the socket on the watch body through the plug to electrically communicate with the B electrode/C electrode.
  • the other structure of the bracelet can remain the same as the structure of the bracelet in the previous embodiment.
  • the electrode extension wire and the wristband are connected in a plug-in manner, which is reliable in connection and simple in operation.
  • the watch body 1 of the wristband 100 may also be provided with other functional devices, such as a processor, a touch screen (also called a touch panel), a display screen, and a wireless communication module (for example, Bluetooth, Wi-Fi, etc.), power source (for example, battery), etc.
  • the wristband 100 can exchange information with other electronic devices (for example, mobile phones, etc.) through a wireless communication module.
  • the electrocardiogram signal generated by the electrocardiogram signal generating unit may be transmitted to the mobile phone 200 through the wireless communication module.
  • the mobile phone 200 processes and analyzes the electrocardiogram signal to generate an electrocardiogram waveform corresponding to the electrocardiogram signal.
  • the mobile phone 200 can also process and analyze the received electrocardiogram signals to obtain corresponding electrocardiographic indicators, such as P wave, P-R interval, Q wave, Q-T interval, etc.
  • the mobile phone 200 can store ECG waveforms and/or ECG indicator analysis results, and can also send the ECG waveforms and/or ECG indicator analysis results to the wristband 100, and the user can view the ECG waveform and/or heartbeat on the display of the wristband 100. Electricity index analysis result.
  • the electrocardiogram signal generated by the electrocardiogram signal generating unit may be transmitted to the processor in the wristband 100.
  • the processor receives the electrocardiogram signal, it processes and analyzes the electrocardiogram signal, and generates an electrocardiogram waveform corresponding to the electrocardiogram signal.
  • the processor can also process and analyze the received ECG signals to obtain corresponding ECG indicators, such as P wave, PR interval, Q wave, QT interval, etc.
  • the user can view the ECG waveform through the display of the bracelet 100 And/or ECG index analysis results.

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Abstract

一种能够测量心电图信号的可穿戴设备，可穿戴设备包括表体以及与所述表体相连的表带，可穿戴设备还包括三个用于采集人体表面电信号的电极，当可穿戴设备佩戴于人体一上肢时，三个电极能够分别与人体的一上肢、人体的另一上肢、人体的一下肢接触以采集各自对应的肢体表面的电信号，采集到的电信号经可穿戴设备中的心电图信号产生单元进行处理后可以生成与六个肢体导联相对应的心电图信号。相对现有技术而言，本申请的可穿戴设备能够对心脏功能提供更为全面和精准的监测，实现更多的心律失常类型准确筛查以及更准确的心肌缺血位置判断，有利于用户及时发现心脏异常。

Description

能够测量心电图信号的可穿戴设备
本申请要求于2020年03月12日提交中国专利局、申请号为202010169521.5、申请名称为“能够测量心电图信号的可穿戴设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及电子设备技术领域，尤其涉及一种能够测量心电图信号的可穿戴设备。
背景技术
随着电子技术的快速发展以及人们对自身健康状况的日益重视，利用可穿戴设备来辅助健康评估得到日益广泛的应用。
例如，现有技术的一些手环上集成了心电图(ECG，Electronic diagram)监测功能，用于对用户的心脏功能进行监测。手环的表体底面设有第一电极，表体正面设有第二电极，在使用状态下，第一电极与佩戴手环的手腕接触，第二电极与用户另一手腕接触，由此可得到双手I导联所对应的心电图信号。
双手I导联所对应的心电图信号仅能反应心脏部分侧壁的缺血状态，并且对心律失常的鉴别能力也比较有限(例如，仅通过双手I导联难以鉴别室速和室上速伴室内差异传导)，因此，上述现有技术对心脏功能的监测不够全面。
发明内容
本申请的一些实施方式提供了一种能够测量心电图信号的可穿戴设备，能够对心脏功能提供更为全面和精准的监测。
本申请的实施方式提供了一种能够测量心电图信号的可穿戴设备，可穿戴设备包括表体以及与表体相连的表带；可穿戴设备还包括三个用于采集人体表面电信号的电极，当可穿戴设备佩戴至人体的一上肢时，三个电极能够分别与人体的一上肢、人体的另一上肢、人体的一下肢接触；其中，三个电极中的一个电极为设于表体的底面的表底电极，另外两个电极为设于可穿戴设备的外周面的表面电极。
其中，表体的底面为：当可穿戴设备佩戴于腕部时，表体朝向腕部的表面；可穿戴设备的外周面为：当可穿戴设备佩戴于腕部时，可穿戴设备不朝向腕部的表面。
根据本申请的实施方式，可穿戴设备设有三个用于与人体肢体相接触的电极，可以采集人体两个上肢与一个下肢的表面电信号，三个电极采集到的电信号经可穿戴设备中的心电图信号产生单元进行处理后，可穿戴设备可以得到与六个肢体导联相对应的心电图信号。相对于双手I导联，本申请实施方式可以对更多心肌位置的缺血状态进行监测，从而可以提供更准确的心肌缺血位置判断；另外，六个肢体导联对应的心电图信号还包括在诊断心律失常方面更受专业医生认可的II导联、aVR导联心电图信号，因此可以对更多的心律失常类型进行准确筛查。综上，相对现有技术而言，本申请实施例能够对心脏功能提供更为全面和精准的监测，有利于用户及时发现心脏异常。
另外，本申请实施方式的可穿戴设备可佩戴至人体上肢，因此，用户可以在保持正常坐姿的情况下进行心电图测量，测量无需受到使用场合的限制，例如，用户可以在住宅、公司、室外公共场等场合随时随地测量，使用方便。
需要说明的是，在实际使用过程中，可以是三个电极分别与人体的两个上肢与一个下肢接触，以得到与六个肢体导联相对应的心电图信号；也可以是三个电极中的其中两个电极与人体的肢体接触，而另一个为空闲电极，这样可以得到其中一个肢体导联(肢体I导联、肢体II导联或肢体III导联)所对应的心电图信号。
根据本申请的实施方式，三个电极中的一个电极设于表体的底面，当可穿戴设备佩戴于用户腕部时，该电极能够与用户腕部自然接触，这样，不仅可方便电极的设置，同时可减少暴露于可穿戴设备外周面的电极的数量，使得可穿戴设备外形美观。
在一些实施方式中，两个表面电极分别设于表体的正面、表体的侧面以及表带三者中的其中两者上。这样设置后，两个表面电极位于可穿戴设备的两个不同的表面上，可避免一个肢体同时接触到两个表面电极，使得测量结果准确。
在一些实施方式中，两个表面电极中的其中一个设于表体的侧面，另外一个设于表体的正面。这样设置后，三个电极均设于表体上，可简化电极与心电图信号处理单元之间的电连接结构，从而简化可穿戴设备的结构。在一些使用场景中，设于表体侧面的电极用于与人体的另一上肢接触，设于表体正面的电极用于与人体的下肢接触。
在一些实施方式中，两个表面电极沿表体的厚度方向的投影不重叠。这样，用户右手在接触表体侧面的电极时，不会同时误触到表体正面的电极，使得测量结果准确。
在一些实施方式中，表体的侧面设有表冠；设于表体侧面的电极位于表冠上。表体侧面的电极可以为设于表冠周面和/或表冠端面的电极片，也可以为表冠本身。这样，将电极和表冠合二为一，可以简化可穿戴设备的结构，使得可穿戴设备外形美观。
在一些实施方式中，两个表面电极中的其中一个设于表体的正面，另外一个设于表带。这样设置后，在测量心电图时，用户的各肢体都可以处于自然状态，可提高测量时的舒适度，改善用户体验。在一些使用场景中，设于表体正面的电极用于与人体的另一上肢接触，设于表带的电极用于与人体的下肢接触；在另一些使用场景中，设于表体正面的电极用于与人体的下肢接触，设于表带的电极用于与人体的另一上肢接触
在一些实施方式中，设于表体正面的电极包括一段或相互电连通的多段条形子电极。这样设置后，不仅可以增加电极的表面面积，从而方便用户与电极进行接触，还可以使得表体外形更为美观。
在一些实施方式中，两个表面电极中的至少一个表面电极通过伸缩拉线设置在可穿戴设备上；当可穿戴设备佩戴至人体的一上肢时，当拉动至少一个表面电极并带动伸缩拉线拉出，可使得至少一个表面电极脱离可穿戴设备的外周面并与人体的另一上肢或人体的一下肢接触；当使至少一个表面电极处于自由状态伸缩拉线自动回缩，可使得至少一个表面电极复位至可穿戴设备的外周面上。
当两个表面电极中的其中一个表面电极通过伸缩拉线设置在可穿戴设备上时，可提高心电图测量时的便利性和舒适程度，或者可以实现一个肢体导联的心电图的长时间连续测量。当两个表面电极均通过伸缩拉线设置在可穿戴设备上时，可实现六个肢体导联的心电图的长时间连续测量。
在一些实施方式中，可穿戴设备还包括至少一根电极延伸线，电极延伸线的一端为能够与两 个表面电极中的其中一个表面电极可分离地连接的连接端子，另一端为能够采集人体表面电信号的电极；其中，在使用状态下，可穿戴设备佩戴至人体的一上肢，电极延伸线的连接端子连接至两个表面电极中的其中一个表面电极，电极延伸线另一端的电极能够与人体的另一上肢或人体的一下肢接触。
在一些实施方式中，电极延伸线的数量为一根，该电极延伸线的连接端子与两个表面电极中的其中一个表面电极可分离地连接，这样可提高心电图测量时的便利性和舒适程度，或者可以实现一个肢体导联的心电图的长时间连续测量。
在一些实施方式中，电极延伸线的数量为两根，两根电极延伸线的两个连接端子分别与两个表面电极相连，这样可实现六个肢体导联的心电图的长时间连续测量。
在一些实施方式中，电极延伸线的连接端子具有卡槽，表面电极上具有凸出部，连接端子可通过该卡槽与表面电极上的凸出部进行卡合。
在一些实施方式中，电极延伸线的连接端子上具有磁吸件，连接端子可通过该磁吸件与表面电极磁吸连接。
在一些实施方式中，可穿戴设备的表体上设有插孔，插孔通过设于表体内部的导电结构与两个表面电极中的其中一个表面电极连接；以及至少一根电极延伸线，电极延伸线的一端为能够插设于插孔中的插接头，电极延伸线的另一端为能够采集人体表面电信号的电极；其中，在使用状态下，可穿戴设备佩戴至人体的一上肢，电极延伸线的插接头插设于表体的插孔中，电极延伸线另一端的电极能够与人体的另一上肢或人体的一下肢接触。
根据本申请的实施方式，可穿戴设备上设有插孔，电极延伸线上设有可插设在该插孔中的插接头，电极延伸线与可穿戴设备通过插拔的方式连接，连接可靠，操作简单。
附图说明
图1a～图1f分别示出了与六个肢体导联相对应的电极分布示意图；
图2示出了本申请实施例提供的手环结构示意图；
图3a～图3e示出了本申请实施例提供的手环电极设置方式的第一种示例；
图4a～图4c示出了本申请实施例提供的手环电极设置方式的第二种示例；
图5a～图5c示出了本申请实施例提供的手环电极设置方式的第三种示例；
图6a～图6d示出了本申请一个实施例提供的手环的结构示意图(包括伸缩拉线)；
图7a～图7d示出了本申请另一个实施例提供的手环的结构示意图(包括电极延伸线)；
图8a示出了本申请实施例提供的手环用于心电图测量时的一种场景；
图8b示出了本申请实施例提供的手环用于心电图测量时的另一种场景。
具体实施方式
以下由特定的具体实施例说明本发明的实施方式，本领域技术人员可由本说明书所揭示的内容轻易地了解本发明的其他优点及功效。虽然本发明的描述将结合较佳实施例一起介绍，但这并不代表此发明的特征仅限于该实施方式。恰恰相反，结合实施方式作发明介绍的目的是为了覆盖基于本发明的权利要求而有可能延伸出的其它选择或改造。为了提供对本发明的深度了解，以下描述中将包含许多具体的细节。本发明也可以不使用这些细节实施。此外，为了避免混乱或模糊本发明的重点，有些具体细节将在描述中被省略。
应注意的是，在本说明书中，相似的标号和字母在下面的附图中表示类似项，因此，一旦某一项在一个附图中被定义，则在随后的附图中不需要对其进行进一步定义和解释。
在本实施例的描述中，需要说明的是，术语“上”、“下”、“顶”、“底”等指示的方位或位置关系为基于附图所示的方位或位置关系，或者是该申请产品使用时惯常摆放的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。
术语“第一”、“第二”等仅用于区分描述，而不能理解为指示或暗示相对重要性。
在本实施例的描述中，还需要说明的是，除非另有明确的规定和限定，术语“设置”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本实施例中的具体含义。
为使本申请的目的、技术方案和优点更加清楚，下面将结合附图对本申请的实施方式作进一步地详细描述。
医学上用于心电图测量的常用导联体系为标准12导联，其中，肢体导联系统反映心脏电位投影在额面的情况，包括I、II、III、avR、avL和avF导联；胸前导联系统反映心脏电位投影水平面情况，包括：V1、V2、V3、V4、V5、V6导联。
参考图1a～图1f，六个肢体导联分别为：
左上肢电极E1和右上肢电极E2之间形成肢体I导联(图1a)；右上肢电极E2和下肢电极E3之间形成肢体II导联(图1b)；左上肢电极E1和下肢电极E3之间形成肢体III导联(图1c)；
示例性地，将左上肢、右上肢或下肢任意一者上的电极作为探查电极，而将其余二肢体上的电极之间串联一无关电极(例如，可以在其余二肢体的电极之间串联一电阻作为无关电极)，探查电极与无关电极之间形成加压单极导联，即，
将右上肢电极E2作为探查电极，在左上肢电极E1与下肢电极E3之间串联无关电极一E4，右上肢电极E2与无关电极一E4之间形成压单极右上肢aVR导联(图1d)；将左上肢电极E1作为探查电极，在右上肢电极E2与下肢电极E3之间串联无关电极二E5，左上肢电极E1与无关电极二E5之间形成压单极左上肢aVL导联(图1e)；将下肢电极E3作为探查电极，在左上肢电极E1与右上肢电极E2之间串联无关电极三E6，下肢电极E3与无关电极三E6之间形成压单极左下肢aVF导联(图1f)。
本文中，“上肢”为肩膀以下的部分，包括手部；“下肢”为髋关节以下的部分，包括脚部。另外，由于用右下肢代替左下肢进行心电图测量也可以得到准确的心电图信号，因此，本文中的“下肢”为左下肢或右下肢中的任意一者。
现有技术中，可穿戴设备可以对双手I导联对应的心电图信号测量，但双手I导联对应的心电图信号仅能反应心脏部分侧壁的缺血状态，并且对心律失常的鉴别能力也比较有限。为此，本申请实施方式提供了一种可穿戴设备(例如，手环、手表、臂带等)，用于对心脏功能提供更为全面的监测。以下以手环为例，对本申请实施方式的技术方案进行介绍。
图2示出了本申请实施例提供的一种手环100。手环100包括心电图信号产生单元(未示出)以及与心电图信号产生单元相连的三个电极(未示出)，当手环100佩戴至人体的一上肢时，三个电极能够分别与人体的一上肢、人体的另一上肢、人体的一下肢接触以采集各自对应的肢体表面的电信号，心电图信号产生单元能够对三个电极采集到的电信号进行处理以生成与六个肢体导 联相对应的心电图信号。其中，“电极”的材料可以为铜、铝、银、不锈钢、石墨等任意能够导电的材料。
在一些可能的实现方式中，“心电图信号产生单元”能够接收各电极上的电信号，对接收到的电信号进行处理以得到各电极之间的电位差，并能通过放大电路放大各电极之间的电位差，进而得到与各肢体导联相对应的心电图信号。“心电图信号产生单元”可以为微控制单元或者其他具有信号处理功能的单元。
本申请实施例的手环100设有三个用于与人体肢体相接触的电极，从而可以得到与六个肢体导联相对应的心电图信号，相对于双手I导联，本申请实施例可以对更多心肌位置的缺血状态进行监测，从而可以提供更准确的心肌缺血位置判断；另外，六个肢体导联对应的心电图信号包括在诊断心律失常方面，更受专业医生认可的II导联、aVR导联心电图信号，因此可以对更多的心律失常类型进行准确筛查。综上，相对现有技术而言，本申请实施例能够对心脏功能提供更为全面和精准的监测，有利于用户及时发现心脏异常。
另外，本申请实施例中，手环100佩戴至人体腕部，因此，用户可以在保持正常坐姿的情况下进行心电图测量，测量无需受到使用场合的限制，用户可以在住宅、公司、室外公共场等场合随时随地测量，使用方便。
需要说明的是，在实际使用过程中，可以是三个电极分别与人体的两个上肢与一个下肢接触，以得到与六个肢体导联相对应的心电图信号；也可以是三个电极中的其中两个电极与人体的肢体接触，而另一个为空闲电极，这样可以得到其中一个肢体导联(肢体I导联、肢体II导联或肢体III导联)所对应的心电图信号。
另外，可选地，手环100上还可以设置有用于消噪的参考电极，该参考电极为除上述三个电极之外的第四个电极。参考电极与心电图信号产生单元相连，并且能够与人体表面接触以采集人体表面的电信号。在心电图信号产生单元生成心电图信号的过程中，可利用参考电极采集到的电信号来进行噪声消除。
参考图2，本申请实施例中，手环100包括表体1以及与表体1相连的腕带2，腕带2用于将表体1佩戴至用户腕部，心电图信号产生单元可以设于表体1中。
本申请对表体1和腕带2的连接方式不作限定，例如，腕带2可以通过一段柔性条带实现，该柔性条带的两端分别与表体1的两端连接；腕带2也可以通过两段柔性条带实现，这两段柔性条带中的每段柔性条带的一端分别与表体1的两端中的一端连接，这两段柔性条带中的每段柔性条带的另一端通过连接结构(例如，卡扣、连钩、粘条等)实现可拆卸连接。
本申请实施例中，手环100上的三个电极分别为A电极、B电极、C电极，其中，A电极设置为在表体1的底面，本文称之为“表底电极”，B电极和C电极设置在手环100的外周面上，本文称之为“表面电极”。
本申请实施例中，A电极设于表体1的底面，当手环100佩戴于用户腕部时，A电极能够与用户腕部自然接触，这样，不仅可方便电极的设置，同时可减少暴露于手环100外周面的电极的数量，使得手环100外形美观。
在一些可能的实现方式中，B电极和C电极分别设于表体1的正面、表体1的侧面以及腕带2三者中的其中两者上。B电极和C电极设于两个不同的表面上，可避免一个肢体同时接触到B电极和C电极，使得测量结果准确。
本文中，手环100的外周面为，当手环100佩戴于腕部时，手环100不朝向腕部的表面；表 体1的底面为，当手环100佩戴于腕部时，表体1朝向腕部的表面；表体1的正面为，当手环100佩戴于腕部时，表体1背向腕部的表面，例如，图2中设置显示屏的表面为表体1的正面；表体1的侧面为表体1正面与表体1底面之间的表面，例如，图2中设置表冠11的表面为表体1的侧面。
在下文的描述中，以用户将手环100佩戴于左腕为例(即A电极与左腕接触为例)对手环100的使用场景进行介绍。但可以理解，用户也可以将手环100佩戴于右腕上，对于手环100佩戴于右腕时的使用场景，可以将下文描述中的A电极替换为与用户的右腕接触，下文描述中与右上肢接触的电极替换为与左腕接触。
图3a～图3e示出了手环100电极设置方式的示例一。其中，A电极设于表体1的底面，B电极设于表体1的侧面，C电极设于表体1的正面。本示例中，三个电极均设于表体1上，可简化电极与心电图信号产生单元之间的电连接结构，从而简化手环100的结构。
在本示例的一些使用场景中，A电极与用户的左腕接触，B电极与用户的右上肢接触，C电极与用户的下肢接触。在测量心电图时，用户可以保持坐姿，将手环100佩戴至左腕，A电极与用户左腕自然接触。通过转动左腕或者通过转动手环100，使得表体1的正面朝下，然后将左手自然放置在下肢上，使得C电极与用户的下肢接触。可选地，用户可以将左手自然放置在左下肢上，使得C电极与左下肢接触，这样，用户在测量心电图时可保持在比较放松的姿态。
本示例中，B电极设置在表体1的侧面，因此，当左手自然放置在下肢上时，B电极不会与左上肢或下肢接触，此时，用户此时可以用右手一手指(例如，拇指)接触B电极，以使得手环100上的三个电极分别与人体的两个上肢和一个下肢接触，以采集各自对应的肢体表面的电信号，心电图信号产生单元能够根据三个电极采集到的电信号进行处理以生成与六个肢体导联相对应的心电图信号。
需要说明的是，本申请实施例中，并不对手环100的实际使用方法进行限定。例如，在本示例的又一些使用场景中，用户还可以将手环100从腕部取下以进行心电图测量。示例性地，在该场景中，用户可以保持坐姿，翻转表体1，使得表体1的正面朝下，然后将表体1放置在用户的一下肢上，使得表体1正面的C电极与用户的该下肢接触。同时，用户可以用一手部(例如，左手)按压表底，以使得该手部与A电极接触，用另一手部(例如，右手)与B电极接触，以使得手环100上的三个电极分别与人体的两个上肢和一个下肢接触，心电图产生单元能够生成与六个肢体导联相对应的心电图信号。在该使用场景中，用户在测量心电图时可以保持在比较舒适的姿态。
在本示例的另一些使用场景中，用户也可以只与三个电极中的其中两个电极接触，以得到与一个肢体导联相对应的心电图信号。例如，用户将手环100佩戴于左腕上，同时用右手接触B电极，心电图信号产生单元能够得到与肢体I导联相对应的心电图信号。
参考图3a和图3b，在本示例的一些可能的实现方式中，表体1的侧面设有表冠11，B电极设于该表冠11上。例如，B电极可以为设于表冠11周面和/或表冠11端面的电极片，也可以为表冠11本身。本实现方式中，将电极和表冠11合二为一，可以简化手环100的结构，使得手环100外形美观。
参考图3d和图3e，在本示例的一些可能的实现方式中，C电极包括一段或多段相互电连通的条形子电极。示例性地，参考图3d，C电极可以包括一段条形子电极；或者，参考图3e，C电极包括两段条形子电极，两段条形子电极分别设于显示屏的上下两侧，且两段条形子电极通过设置 表体1内部的结构实现电连通。本实现方式不仅可以增加电极的表面面积，方便用户与电极进行接触，还可以使得表体1外形更为美观。
参考图3b、3d和图3e，在本示例的一些可能的实现方式中，B电极和C电极沿表体1的厚度方向的投影不重叠，这样，用户右手在接触B电极时，不会同时误触到C电极，使得测量结果准确。
图4a～图4c示出了手环100电极设置方式的示例二。其中，A电极设于表体1的底面，B电极设于表体1的正面，C电极设于腕带2上。本示例中，在测量心电图时，用户的各肢体都可以处于自然状态，可提高测量时的舒适度，改善用户体验。
在本示例的一种使用场景中，A电极与用户的左腕接触，B电极与用户的右上肢接触，C电极与用户的下肢接触。在测量心电图时，用户可以保持坐姿，将手环100佩戴至左腕，A电极与用户左腕自然接触。通过转动左腕或者转动手环100，使得C电极正面朝向下肢，然后将左手自然放置在下肢上，使得C电极与用户的下肢接触。可选地，用户可以将左手自然放置在左下肢上，使得C电极与左下肢接触，这样，用户在测量心电图时可保持在比较放松的姿态。
本示例中，B电极设于表体1的正面，因此，当左手自然放置的下肢上时，B不会与下肢接触，用户可以将右手自然搭放在B电极上。可选地，用户的右手在与B电极接触的同时，可以轻微按压表体1，有利于保证A电极和左腕的可靠接触。此时，手环100上的三个电极分别与人体的两个上肢和一个下肢接触，可采集各自对应的肢体表面的电信号，心电图信号产生单元能够根据三个电极采集到的电信号进行处理以生成与六个肢体导联相对应的心电图信号。
在本示例的另一种使用场景中，A电极与用户的左腕接触，B电极与用户的下肢接触，C电极与用户的右上肢接触。在测量心电图时，用户可以保持坐姿，将手环100佩戴至人体左腕，A电极与用户左腕自然接触。通过转动左腕或者转动手环100，使得表体1的正面朝下，然后将左手自然放置在下肢上，使得表体1正面的B电极与用户的下肢接触。可选地，用户可以将左手自然放置在左下肢上，使得B电极与左下肢接触，这样，用户在测量心电图时可保持在比较放松的姿态。
本示例中，C电极设置在腕带2上，因此，当左手自然放置在下肢上时，C电极不会与下肢接触，此时，用户可以将右手自然搭放在C电极上，以使得手环100上的三个电极分别与人体的两个上肢和一个下肢接触，以采集各自对应的肢体表面的电信号，心电图信号产生单元能够根据三个电极采集到的电信号进行处理以生成与六个肢体导联相对应的心电图信号。
在本示例的又一些使用场景中，用户也可以只与三个电极中的其中两个电极接触，以得到与一个肢体导联相对应的心电图信号。例如，用户将手环100佩戴于左腕上，同时用右手接触B电极，心电图信号产生单元能够得到与肢体I导联相对应的心电图信号。
在本示例的一些可能的实现方式中，B电极包括一段或多段相互电连通的条形子电极。其设置方式可以参考第一个示例中C电极的设置方式，不再赘述。本实现方式不仅可以增加电极的表面面积，从而方便用户与电极进行接触，还可以使得表体1外形更为美观。
在本示例的一些可能的实现方式中，C电极在腕带2上的位置使得当手环100佩戴于用户腕部时，C电极和表体1可以位于用户腕部的相反两侧，这样可以进一步提高测量时的舒适度。可选地，参考图4c，手环100的腕带2包括分别设于表体1两端的第一腕带21和第二腕带22，C电极可以设于第一腕带21的远离表体1的端部，在另一些实现方式中，C电极也可以设于第二腕带22的远离表体1的端部。
图5a～图5c示出了手环100电极设置方式的示例三。其中，A电极设于表体1的底面，B电极设于表体1的侧面，C电极设于腕带2上。
在本示例的一些使用场景中，A电极与用户的左腕接触，B电极与用户的右上肢接触，C电极与用户的下肢接触。在测量心电图时，用户可以保持坐姿，将手环100佩戴至左腕，A电极与用户左腕自然接触。通过转动左腕或者通过转动手环100，使得C电极的正面朝下，然后将左手自然放置在腿部，使得C电极与用户的下肢接触。可选地，用户可以将左手自然放置在左下肢上，使得C电极与左下肢接触，这样，用户在测量心电图时可保持在比较放松的姿态。
本示例中，B电极设置在表体1的侧面，因此，当左手自然放置在下肢上时，B电极不会与右上肢接触，此时，用户此时可以用右手一手指(例如，拇指)接触B电极，以使得手环100上的三个电极分别与人体的两个上肢和一个下肢接触，以采集各自对应的肢体表面的电信号，心电图信号产生单元能够根据三个电极采集到的电信号进行处理以生成与六个肢体导联相对应的心电图信号。
在本示例的一些可能的实现方式中，C电极在腕带2上的位置使得当手环100佩戴于用户腕部时，C电极和表体1可以位于用户腕部的相反两侧，这样可以进一步提高测量时的舒适度。可选地，参考图5b和图5c，手环100的腕带包括分别设于表体1两端的第一腕带21和第二腕带22，C电极可以设于第一腕带21远离表体1的端部(图5b)，或者，C电极可以设于第二腕带22远离表体1的端部(图5c)。
另外，用户也可以只与三个电极中的其中两个电极与人体的肢体接触，以得到与一个肢体导联相对应的心电图信号。例如，用户将手环100佩戴于左腕上，同时用右手接触B电极，可得到与肢体I导联相对应的心电图信号。
参考图6a～图6d，本申请的一个实施例中，B电极和C电极中的至少一个还可以通过伸缩拉线3设置在手环100上。当B电极和C电极的其中一个通过伸缩拉线3设置在手环100上时，可提高心电图测量时的便利性和舒适程度，或者可以实现一个肢体导联的心电图的长时间连续测量。当B电极和C电极均通过伸缩拉线3设置在手环100上时，可实现六个肢体导联的心电图的长时间连续测量。心电图长时间连续测量的应用场景例如为：睡眠时的测量、运动时的测量、工作时的测量等。
下面以示例一的电极设置方式为例对伸缩拉线3的设置原理进行介绍。对于其他电极设置方式，其伸缩拉线3的设置原理与示例一的原理类似，不再赘述。
图6a～图6c示出了上文示例一的C电极通过伸缩拉线3设置在手环100上的情况。在一些使用场景中，A电极与用户的左腕接触，B电极与用户的右上肢接触，C电极与用户的下肢接触。其中，图6a为电极C位于手环100外周面的状态，图6b为电极C被拉动时的中间状态，图6c为电极C被拉动至与右上肢接触时的状态。在测量心电图时，手环100佩戴至人体左腕，A电极与用户左腕自然接触。拉动C电极并带动伸缩拉线3拉出，C电极能够脱离手环100的外周面并可以与人体的下肢接触，然后可以通过电极贴等固定装置将C电极固定在人体表面。此时，用右手一手指(例如，拇指)接触B电极，以使得手环100上的三个电极分别与人体的两个上肢和一个下肢接触，以采集各自对应的肢体表面的电信号，心电图信号产生单元能够根据三个电极采集到的电信号进行处理以生成与六个肢体导联相对应的心电图信号。
心电图测量结束后，撕掉电极贴，使B电极处于自由状态，此时，伸缩拉线3自动回缩，可使得C电极复位至手环100的外周面。本场景中，在测量心电图时，C电极通过伸缩拉线3与下 肢接触，表体1无需与下肢直接接触，因此，用户可以通过坐姿、站姿、卧姿等各种姿势进行心电图测量，提高了测量时的便利性和舒适程度。
在另一些使用场景中，上述结构还能实现一个肢体导联的长时间连续测量。该使用场景中，A电极与用户的左腕接触，C电极与用户的下肢接触，B电极为空闲电极。在测量心电图时，手环100佩戴至人体左腕，A电极与左腕自然接触。然后，拉动C电极并带动伸缩拉线3拉出，C电极能够脱离手环100的外周面并可以与人体的下肢接触，然后通过电极贴等固定装置将C电极固定在人体表面。此时，人体的肢体都处于自然状态，在测量心电图时，不会影响人体的正常活动，因此可以对肢体III导联所对应的心电图信号进行长时间连续测量。
B电极通过伸缩拉线3设置在手环100上的原理与C电极相似，不再赘述。
图6d示出了上文示例一的B电极和C电极均通过伸缩拉线3设置在手环100上的情况。在一些使用场景中，A电极与用户的左腕接触，B电极与用户的右上肢接触，C电极与用户的下肢接触。在测量心电图时，手环100佩戴至人体左腕，A电极与用户左腕自然接触。然后，拉动B电极并带动伸缩拉线3拉出，B电极能够脱离手环100的外周面并可以与人体的右上肢接触，然后，通过电极贴等固定装置将B电极固定在人体表面。同样地，拉动C电极并带动伸缩拉线3拉出，C电极能够脱离手环100的外周面并可以与人体的下肢接触，然后，通过电极贴等固定装置将C电极固定在人体表面。在测量心电图时，B电极通过伸缩拉线3与右上肢接触，C电极通过伸缩拉线3与人体的下肢接触，因此，在测量过程中，人体的各肢体都处于自然状态，测量过程不会影响用户的正常活动，人体可以以站姿、坐姿、卧姿、静止状态、运动状态等各种姿态进行心电图测量，可以对六个肢体导联相对应的心电图信号进行连续长时间的测量。
心电图测量结束后，撕掉电极贴，使B电极和C电极处于自由状态，此时，伸缩拉线3自动回缩，可使得B电极和C电极复位至手环100的外周面。
图7a～图7d示出了本申请提供的手环100的另一个实施例，本实施例中，手环100还包括至少一根电极延伸线4，电极延伸线4的一端为能够与B电极或C电极实现可分离连接的连接端子，另一端为能够采集人体表面电信号的电极。当B电极和C电极的其中一个与电极延伸线4相连时(即电极延伸线4为一根时)，可提高心电图测量时的便利性和舒适程度，或者可以实现一个肢体导联的心电图的长时间连续测量。当B电极和C电极均与电极延伸线4相连时(即电极延伸线4为两根时)，可实现六个肢体导联的心电图的长时间连续测量。心电图长时间连续测量的应用场景例如为：睡眠时的测量、运动时的测量、工作时的测量等。
在一些可能的实现方式中，连接端子具有卡槽，B电极或C电极上具有凸出部，连接端子可通过该卡槽与B电极上的凸出部或C电极上的凸出部进行卡合(例如，图7a所示的电极延伸线4与C电极的连接方式)；或者，连接端子具有磁吸件，连接端子可通过该磁吸件与B电极或C电极磁吸连接(例如，图7c所示的电极延伸线4与C电极的连接方式)。
下面以示例一和示例三的电极设置方式为例对电极延伸线4的设置原理进行介绍。对于其他电极设置方式，其电极延伸线4的设置原理与示例一、示例三的原理类似，不再赘述。
图7a示出了上文示例一的C电极与电极延伸线4连接的情况。在一些使用场景中，A电极与用户的左腕接触，B电极与用户的右上肢接触，C电极通过电极延伸线4与下肢连接。在测量心电图时，手环100佩戴至人体左腕，A电极用户左腕自然接触。将电极延伸线4一端的连接端子与C电极连接，将电极延伸线4另一端的电极(图示D电极)与人体下肢接触，并通过电极贴等固定装置将D电极固定在人体表面。然后，右手接触电极B，以使得手环100上的三个电极分别 与人体的两个上肢和一个下肢连接，以采集各自对应的肢体表面的电信号，心电图信号产生单元能够根据三个电极采集到的电信号进行处理以生成与六个肢体导联相对应的心电图信号。本场景中，在测量心电图时，C电极通过电极延伸线4与人体下肢相连，表体1无需与下肢直接接触，因此，用户可以通过坐姿、站姿、卧姿等各种姿势进行心电图测量，提高了测量时的便利性和舒适程度。
在另一些使用场景中，上述结构还能实现一个肢体导联的长时间连续测量。该使用场景中，A电极与用户的左腕接触，C电极通过电极延伸线4与右上肢连接，B电极为空闲电极。在测量心电图时，手环100佩戴至人体左腕，A电极与左腕自然接触。然后，C电极通过电极延伸线4与人体下肢相连，然后通过电极贴等固定装置将C电极固定在人体表面。此时，人体的肢体都处于自然状态，在测量心电图时，不会影响人体的正常活动，因此可以对肢体III导联所对应的心电图信号进行长时间连续测量。
图7b示出了上文示例一的B电极、C电极均与电极延伸线4连接的情况。在一些使用场景中，A电极与用户的左腕接触，B电极通过电极延伸线4与用户的右上肢连接，C电极与电极延伸线4与用户的下肢连接。在测量心电图时，手环100佩戴至人体左腕，A电极用户左腕自然接触。将一根电极延伸线4一端的连接端子与C电极连接，将该电极延伸线4另一端的电极(图示D电极)与人体下肢接触，并通过电极贴等固定装置将电极D固定在人体表面。将另一根电极延伸线4一端的连接端子与B电极连接，将该电极延伸线4另一端的电极(图示F电极)与人体下肢接触，并通过电极贴等固定装置将电极F固定在人体表面。此时，手环100上的三个电极分别与人体的两个上肢和一个下肢连接，可采集各自对应的肢体表面的电信号，心电图信号产生单元能够根据三个电极采集到的电信号进行处理以生成与六个肢体导联相对应的心电图信号。本场景中，在测量过程中，人体的各肢体都处于自然状态，测量过程不会影响用户的正常活动，人体可以以站姿、坐姿、卧姿、静止状态、运动状态等各种姿态进行心电图测量，可以对六个肢体导联相对应的心电图信号进行连续长时间的测量。
图7c示出了示例三的C电极与电极延伸线4连接的情况。在一些使用场景中，A电极与用户的左腕接触，B电极与用户的右上肢接触，C电极通过电极延伸线4与下肢连接。本场景中，在测量心电图时，C电极通过电极延伸线4与人体下肢相连，表体1无需与下肢直接接触，因此，用户可以通过坐姿、站姿、卧姿等各种姿势进行心电图测量，提高了测量时的便利性和舒适程度。
另外，在图7c所示的结构中，C电极通过电极延伸线4与人体下肢相连，表体1无需与下肢直接接触，在测量心电图时，人体的肢体都处于自然状态，测量过程不会影响人体的正常活动，因此可以对肢体III导联所对应的心电图信号进行连续长时间的测量。
图7d示出了示例三的B电极、C电极均与电极延伸线4连接的一种情况。在一些使用场景中，A电极与用户的左腕接触，B电极通过一根电极延伸线4与用户的右上肢连接，C电极通过另一根电极延伸线4与用户的下肢连接。本场景中，在测量过程中，人体的各肢体都处于自然状态，测量过程不会影响用户的正常活动，人体可以以站姿、坐姿、卧姿、静止状态、运动状态等各种姿态进行心电图测量，可以对六个肢体导联相对应的心电图信号进行连续长时间的测量。
本申请还提供了手环的又一个实施例，本实施例中，手环在图7a～图7d所示的手环100的基础上进行如下变形：手环的表体上设有插孔，插孔通过设于表体内部的导电结构与B电极/C电极连接；电极延伸线一端的连接端子替换为接插头，且该接插头能够插设于表体上的插孔中。在使用状态下，电极延伸线通过接插头插设于表体上的插孔中，以与B电极/C电极电连通。除上述变 形之外，手环的其他结构可以与上一实施例中手环的结构保持相同。
本实施例提供的手环100，电极延伸线与手环采用插拔的方式进行连接，连接可靠，操作简单。
本申请各实施例提供的手环100，手环100的表体1中还可以设有其他功能器件，例如，处理器、触摸屏(又称触控面板)、显示屏、无线通信模块(例如，蓝牙、Wi-Fi等)、电源(例如，电池)等。手环100可以通过无线通信模块与其他电子设备(例如：手机等)交互信息。
参考图8a，在一些使用场景中，心电图信号产生单元生成的心电图信号可以通过无线通信模块传送至手机200。手机200接收到心电图信号之后，对心电图信号进行处理、分析，生成与心电图信号相对应的心电图波形。手机200还可以对接收到的心电图信号进行处理、分析，得到相应的心电指标，例如P波、P-R间期、Q波、Q-T间期等。手机200可以存储心电图波形和/或心电指标分析结果，还可以将心电图波形和/或心电指标分析结果发送至手环100，用户可以通过手环100的显示屏查看心电图波形和/或心电指标分析结果。
参考图8b，在另一些使用场景中，心电图信号产生单元生成的心电图信号可以传送至手环100中的处理器。处理器接收到心电图信号之后，对心电图信号进行处理、分析，生成与心电图信号相对应的心电图波形。处理器还可以对接收到的心电图信号进行处理、分析，得到相应的心电指标，例如P波、P-R间期、Q波、Q-T间期等，用户可以通过手环100的显示屏查看心电图波形和/或心电指标分析结果。
综上所述，本发明提供的上述实施例仅例示性说明本发明的原理及其功效，而非用于限制本发明。任何熟悉此技术的人士皆可在不违背本发明的精神及范畴下，对上述实施例进行修饰或改变。因此，举凡所属技术领域中具有通常知识者在未脱离本发明所揭示的精神与技术思想下所完成的一切等效修饰或改变，仍应由本发明的权利要求所涵盖。

Claims (11)

  1. 一种能够测量心电图信号的可穿戴设备，其特征在于，所述可穿戴设备包括表体以及与所述表体相连的表带，所述可穿戴设备还包括三个用于采集人体表面电信号的电极，当所述可穿戴设备佩戴至人体的一上肢时，三个电极能够分别与人体的所述一上肢、人体的另一上肢、人体的一下肢接触；
    其中，所述三个电极中的一个电极为设于所述表体的底面的表底电极，另外两个电极为设于所述可穿戴设备的外周面的表面电极。
  2. 根据权利要求1所述的可穿戴设备，其特征在于，两个表面电极分别设于所述表体的正面、所述表体的侧面以及所述表带三者中的其中两者上。
  3. 根据权利要求2所述的可穿戴设备，其特征在于，所述两个表面电极中的其中一个设于所述表体的侧面，另外一个设于所述表体的正面。
  4. 根据权利要求3所述的可穿戴设备，其特征在于，所述两个表面电极沿所述表体的厚度方向的投影不重叠。
  5. 根据权利要求3所述的可穿戴设备，其特征在于，所述表体的侧面设有表冠；设于所述表体侧面的电极位于所述表冠上。
  6. 根据权利要求2所述的可穿戴设备，其特征在于，所述两个表面电极中的其中一个设于所述表体的正面，另外一个设于所述表带。
  7. 根据权利要求2或6所述的可穿戴设备，其特征在于，设于所述表体正面的电极包括一段或相互电连通的多段条形子电极。
  8. 根据权利要求1所述的可穿戴设备，其特征在于，所述两个表面电极中的至少一个表面电极通过伸缩拉线设置在所述可穿戴设备上；
    当所述可穿戴设备佩戴至人体的所述一上肢时，当拉动所述至少一个表面电极并带动所述伸缩拉线拉出，可使得所述至少一个表面电极脱离所述可穿戴设备的外周面并与人体的所述另一上肢或人体的所述一下肢接触；当使所述至少一个表面电极处于自由状态所述伸缩拉线自动回缩，可使得所述至少一个表面电极复位至所述可穿戴设备的外周面上。
  9. 根据权利要求1所述的可穿戴设备，其特征在于，所述可穿戴设备还包括：
    至少一根电极延伸线，所述电极延伸线的一端为能够与所述两个表面电极中的其中一个表面电极可分离地连接的连接端子，另一端为能够采集人体表面电信号的电极；
    其中，在使用状态下，所述可穿戴设备佩戴至人体的所述一上肢，所述电极延伸线的所述连接端子连接至所述两个表面电极中的其中一个表面电极，所述电极延伸线另一端的电极能够与人体的所述另一上肢或人体的所述一下肢接触。
  10. 根据权利要求9所述的可穿戴设备，其特征在于，所述电极延伸线的数量为两根，两根所述电极延伸线用于分别与所述两个表面电极相连。
  11. 根据权利要求1所述的可穿戴设备，其特征在于，
    所述可穿戴设备的表体上设有插孔，所述插孔通过设于所述表体内部的导电结构与所述两个表面电极中的其中一个表面电极连接；以及
    至少一根电极延伸线，所述电极延伸线的一端为能够插设于所述插孔中的插接头，所述电极延伸线的另一端为能够采集人体表面电信号的电极；
    其中，在使用状态下，所述可穿戴设备佩戴至人体的所述一上肢，所述电极延伸线的所述插 接头插设于所述表体的所述插孔中，所述电极延伸线另一端的电极能够与人体的所述另一上肢或人体的所述一下肢接触。
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