Blood pressure measurement apparatus

Abstract

Provided is a blood pressure measurement apparatus, comprising: a housing (100), a signal processor, a plurality of electrocardiographic electrodes, and a pulse sensor assembly (200). The signal processor is located in an accommodation space. At least some of the electrocardiographic electrodes are located outside the housing (100), and the plurality of electrocardiographic electrodes are configured for acquiring electrocardiographic signals of different parts of a human body. At least a part of the pulse sensor assembly (200) is located outside the housing (100) and is configured for acquiring a pulse signal of the human body. The electrocardiographic electrodes and the pulse sensor assembly (200) are each electrically connected to the signal processor. The signal processor is configured for determining a blood pressure value according to the pulse signal and the electrocardiographic signals. The blood pressure measurement apparatus can calculate the blood pressure of a human body by means of the acquired pulse signal and electrocardiographic signals.

Description

Blood pressure measuring device Technical Field

[0001] This disclosure relates to the field of display technology, and more specifically to a blood pressure measuring device. Background Technology

[0002] With the development of mobile communication and display technologies, smart wearable devices have become an important direction for technological development. Currently, most smart wristbands on the market primarily record exercise information, but as people pay more attention to their health, more and more powerful smart wearable devices (such as smart sports wristbands) have entered the market. At present, some smart wristbands for daily health management have also incorporated health monitoring devices. For example, with the improvement of living standards and the acceleration of the pace of life, cardiovascular and cerebrovascular diseases are a major threat to people's health, claiming millions of lives each year. Timely and continuous blood pressure measurement not only helps prevent hypertension but also helps hypertensive patients control their blood pressure and maintain their health. Summary of the Invention

[0003] This disclosure aims to address at least one of the technical problems existing in the prior art by proposing a blood pressure measuring device.

[0004] To achieve the above objectives, this disclosure provides a blood pressure measuring device, comprising:

[0005] A housing, the housing having an internal accommodating space, and the housing having an opening;

[0006] The signal processor is located in the accommodating space;

[0007] Multiple electrocardiogram (ECG) electrodes, at least a portion of which are located outside the housing, are used to collect ECG signals from different parts of the human body;

[0008] A pulse sensor assembly, at least a portion of which is located outside the housing, the pulse sensor assembly being used to acquire pulse signals from a human body;

[0009] The electrocardiogram (ECG) electrodes and the pulse sensor assembly are electrically connected to the signal processor, which is configured to determine the blood pressure value based on the pulse signal and the ECG signal.

[0010] In some embodiments, the housing has a first opening corresponding to the pulse sensor assembly;

[0011] The pulse sensor assembly includes:

[0012] A fixing frame is disposed in the receiving space and connected to the housing, and the fixing frame has a first receiving hole;

[0013] A sensor, mounted on the mounting bracket, passes through the first opening and is used to collect the pulse signal;

[0014] A first connector is disposed in the receiving space, the first connector passes through the first receiving hole, and both ends of the first connector are electrically connected to the sensor and the signal processor, respectively.

[0015] In some embodiments, the sensor includes:

[0016] The base is detachably connected to the mounting bracket.

[0017] A sensing element for collecting the pulse signal is disposed on the side of the base away from the fixing frame and is electrically connected to the first connector.

[0018] In some embodiments, the pulse sensor assembly further includes a protective film disposed on the side of the sensor away from the mounting bracket.

[0019] In some embodiments, a plurality of positioning posts are provided on the inner wall of the housing;

[0020] The fixing frame is provided with a first positioning hole, which corresponds to the positioning post.

[0021] The pulse sensor assembly also includes a protective film mounting part that is fixedly connected to the edge of the protective film, and the protective film mounting part is provided with a second positioning hole;

[0022] The positioning post passes through the second positioning hole and the first positioning hole, the protective film mounting part is located between the fixing frame and the housing, and the protective film passes through the first opening;

[0023] The housing is also provided with a first buckle and a second buckle, which are used to fix the fixing frame to the housing.

[0024] In some embodiments, the signal processor includes: an analog circuit board and a digital circuit board;

[0025] The analog circuit board is electrically connected to the first ECG electrode, the second ECG electrode and the pulse sensor assembly. The analog circuit board is configured to receive and process the ECG signal and the pulse signal, and transmit the processed signal to the digital circuit board.

[0026] The digital circuit board is configured to determine the blood pressure value based on the processed signal.

[0027] In some embodiments, the plurality of electrocardiogram electrodes includes a first electrocardiogram electrode and a second electrocardiogram electrode;

[0028] The housing has a second opening corresponding to the first electrocardiogram electrode and a third opening corresponding to the second electrocardiogram electrode;

[0029] The analog circuit board has a first connecting electrode on the side near the first ECG electrode. The first connecting electrode passes through the second opening and is electrically connected to the first ECG electrode, and the first ECG electrode is electrically connected to the analog circuit board.

[0030] A second connecting electrode is provided on the side of the analog circuit board near the second ECG electrode. The second connecting electrode passes through the third opening and is electrically connected to the second ECG electrode, for transmitting the second ECG signal collected by the second ECG electrode to the analog circuit board.

[0031] In some embodiments, the plurality of electrocardiogram electrodes includes a first electrocardiogram electrode and a second electrocardiogram electrode;

[0032] The housing has a first opening corresponding to the pulse sensor assembly, a second opening corresponding to the first electrocardiogram electrode, and a third opening corresponding to the second electrocardiogram electrode;

[0033] The housing includes a first housing portion and a second housing portion disposed opposite to and connected to each other, the first housing portion and the second housing portion defining the receiving space;

[0034] The first opening is formed on the first housing portion, and the second and third openings are formed on the second housing portion.

[0035] In some embodiments, the first housing portion includes a support plate and a frame surrounding the support plate;

[0036] The blood pressure measuring device also includes a wristband mounting part and a buckle assembly, wherein the wristband mounting part is detachably connected to the frame via the buckle assembly.

[0037] In some embodiments, the wristband mounting portion includes: a mounting body and a hook disposed on the mounting body;

[0038] The frame has a mounting groove, and the second housing has a mounting hole opposite to the frame. The buckle assembly can pass through the mounting hole and extend into the mounting groove.

[0039] The mounting groove has a locking hole on its side wall, through which the hook can be detachably connected to the buckle assembly.

[0040] In some embodiments, a sliding groove is further provided on the side wall of the mounting groove, and the snap-fit ​​assembly includes: a first mounting post, a second mounting post, a force-applying part, and a limiting part;

[0041] The two ends of the force-applying part are respectively connected to the first mounting post and the second mounting post, and the first mounting post and the second mounting post can pass through the mounting hole and extend into the mounting groove;

[0042] The two ends of the limiting part are respectively connected to the first mounting post and the second mounting post, and there is a gap between the limiting part and the force-applying part;

[0043] The force-applying part is provided with a protrusion that can extend into the sliding groove;

[0044] Both the first mounting post and the second mounting post are fitted with elastic elements. When at least a portion of the first mounting post and at least a portion of the second mounting post are located in the mounting groove and the force-applying part is not subjected to external force, the elastic element is in a compressed state, and the hook can engage with the limiting part. When the force-applying part is pressed along the depth direction of the mounting groove, the limiting element can separate from the hook.

[0045] In some embodiments, the blood pressure measuring device further includes a wristband detachably connected to the wristband mounting portion.

[0046] In some embodiments, the housing is further provided with a light-transmitting window;

[0047] The blood pressure measuring device also includes:

[0048] A display screen is disposed in the receiving space, and the display area of ​​the display screen is disposed opposite to the light-transmitting window;

[0049] A cover plate is located on the side of the housing away from the display screen, and the cover plate covers the light-transmitting window. A first sealing element is provided between the housing and the cover plate, surrounding the light-transmitting window.

[0050] In some embodiments, the housing is provided with a charging port;

[0051] The blood pressure measuring device also includes:

[0052] A rechargeable battery is disposed in the receiving space and is electrically connected to the signal processor;

[0053] A charging component is disposed in the receiving space and electrically connected to the signal processor. The charging end of the charging component is exposed by the charging port. The charging component is used to receive electrical signals provided by an external power source and transmit the electrical signals to the signal processor.

[0054] The signal processor is further configured to perform voltage conversion on the electrical signal and transmit the converted electrical signal to the rechargeable battery.

[0055] In some embodiments, the charging assembly includes at least two charging springs, one end of which is exposed by the charging port, the other end of which is electrically connected to the signal processor, and the charging springs are in a compressed state; a second sealing member is provided on the inner wall of the housing to surround the charging springs, the second sealing member being used to seal the gap between the charging springs and the housing.

[0056] In some embodiments, the charging assembly further includes a magnet located between two adjacent charging pins.

[0057] In some embodiments, the housing includes a first housing portion and a second housing portion disposed opposite to each other and detachably connected, the first housing portion and the second housing portion defining the receiving space;

[0058] The first housing portion includes a first part and a second part connected to the first part; the second housing portion includes a third part opposite to the first part and a fourth part opposite to the second part; the thickness direction of the first part and the thickness direction of the second part intersect, and the thickness direction of the third part and the thickness direction of the fourth part intersect.

[0059] The plurality of electrocardiogram electrodes includes a first electrocardiogram electrode and a second electrocardiogram electrode;

[0060] The first electrocardiogram electrode is disposed opposite to the first part, the second electrocardiogram electrode is disposed opposite to the third part, and the pulse sensor assembly is disposed opposite to the fourth part.

[0061] In some embodiments, at least one of the ECG electrodes has a plurality of conductive protrusions on the surface of the electrode away from the housing.

[0062] In some embodiments, the housing also has a power button hole.

[0063] The blood pressure measuring device also includes a power button, which includes a flexible button part and a rigid button part. A portion of the flexible button part is connected to the inner side of the housing, and the rigid button part is connected to another portion of the flexible button part and passes through the power button hole.

[0064] In some embodiments, the flexible button portion has a through hole opposite to the power button hole;

[0065] The rigid button portion includes a first sub-part, a second sub-part, and a third sub-part connected in sequence. The second sub-part is located inside the through hole, and the first and third sub-parts are located on opposite sides of the through hole in its extension direction. The size of the first sub-part and the size of the third sub-part are both larger than the diameter of the through hole.

[0066] In some embodiments, the plurality of electrocardiogram electrodes includes a first electrocardiogram electrode and a second electrocardiogram electrode;

[0067] The housing has a second opening corresponding to the first ECG electrode, and a third sealing element is provided between the housing and the first ECG electrode, surrounding the second opening;

[0068] The housing has a third opening corresponding to the second ECG electrode, and a fourth sealing element is provided between the housing and the second ECG electrode, surrounding the third opening. Attached Figure Description

[0069] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings:

[0070] Figure 1A is a side view of a blood pressure measuring device in some embodiments of this disclosure;

[0071] Figure 1B is another side view of a blood pressure measuring device in some embodiments of this disclosure;

[0072] Figure 1C is a schematic plan view of the blood pressure measuring device in some embodiments of this disclosure;

[0073] Figure 2A is an exploded view of a blood pressure measuring device in some embodiments of this disclosure;

[0074] Figure 2B is a cross-sectional structural schematic diagram of a blood pressure measuring device in some embodiments of this disclosure.

[0075] Figure 3A is a schematic diagram of the structure of a pulse sensor in some embodiments of this disclosure;

[0076] Figure 3B is a schematic diagram of a portion of the blood pressure measuring device in some embodiments of this disclosure;

[0077] Figure 3C is a schematic diagram of another part of the structure of the blood pressure measuring device in some embodiments of this disclosure;

[0078] Figure 3D is a schematic diagram of another part of the structure of the blood pressure measuring device in some embodiments of this disclosure;

[0079] Figure 4A is a schematic diagram of another part of the structure of the blood pressure measuring device in some embodiments of this disclosure;

[0080] Figure 4B is a schematic diagram of another part of the structure of the blood pressure measuring device in some embodiments of this disclosure;

[0081] Figure 5 is a schematic diagram of another part of the structure of the blood pressure measuring device in some embodiments of this disclosure;

[0082] Figure 6 is a schematic diagram of another part of the structure of the blood pressure measuring device in some embodiments of this disclosure;

[0083] Figure 7A is a schematic diagram of the blood pressure measuring device in some other embodiments of this disclosure;

[0084] Figure 7B is a schematic diagram of the structure of a wrist-worn blood pressure measuring device in some embodiments of this disclosure;

[0085] Figure 7C is a schematic diagram of another part of the structure of the blood pressure measuring device in some embodiments of this disclosure;

[0086] Figure 8 is a schematic diagram of the structure of the snap-fit ​​assembly in some embodiments of this disclosure;

[0087] Figure 9 is a schematic diagram of another part of the structure of the blood pressure measuring device in some embodiments of this disclosure;

[0088] Figure 10 is a schematic diagram of another part of the structure of the blood pressure measuring device in some embodiments of this disclosure;

[0089] Figure 11 is a schematic diagram of the charging process of the blood pressure measuring device in some embodiments of this disclosure;

[0090] Figure 12 is a schematic diagram of the assembly structure of the blood pressure measuring device in some embodiments of this disclosure;

[0091] Figure 13A is a three-dimensional structural diagram of the power button in some embodiments of this disclosure;

[0092] Figure 14 is a partial structural schematic diagram of a blood pressure measuring device in some other embodiments of this disclosure;

[0093] Figure 15 is a schematic diagram of another part of the structure of the blood pressure measuring device in some embodiments of this disclosure;

[0094] Figure 16A is a schematic diagram of another part of the structure of the blood pressure measuring device in some embodiments of this disclosure;

[0095] Figure 16B is a schematic diagram of another part of the structure of the blood pressure measuring device in some embodiments of this disclosure;

[0096] Figure 17 is a schematic diagram of another part of the structure of the blood pressure measuring device in some embodiments of this disclosure;

[0097] Figure 18A is a schematic diagram of another part of the structure of the blood pressure measuring device in some embodiments of this disclosure;

[0098] Figure 18B is a schematic diagram of another part of the structure of the blood pressure measuring device in some embodiments of this disclosure;

[0099] Figure 19 is a schematic diagram of the structure of a blood pressure measuring device in some other embodiments of this disclosure. Detailed Implementation

[0100] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0101] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0102] Unless otherwise defined, the technical or scientific terms used in the embodiments of this disclosure should have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms "first," "second," and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0103] As used herein, “parallel” and “perpendicular” include the described situation and situations that are similar to the described situation, within an acceptable range of deviation, which is determined by those skilled in the art taking into account the measurement under discussion and the error associated with the measurement of a particular quantity (i.e., the limitations of the measurement system). For example, “parallel” includes absolute parallelism and approximate parallelism, where an acceptable range of deviation for approximate parallelism may be, for example, within 5°; “perpendicular” includes absolute perpendicularity and approximate perpendicularity, where an acceptable range of deviation for approximate perpendicularity may also be, for example, within 5°.

[0104] It should be understood that when a layer or element is referred to as being on another layer or substrate, it can mean that the layer or element is directly on the other layer or substrate, or that there is an intermediate layer between the layer or element and the other layer or substrate.

[0105] This document describes exemplary embodiments with reference to sectional views and / or plan views, which are idealized exemplary drawings. In the drawings, the thickness of layers and regions is enlarged for clarity. Therefore, variations in shape relative to the drawings are contemplated due to, for example, manufacturing techniques and / or tolerances. Therefore, exemplary embodiments should not be construed as limited to the shapes of the regions shown herein, but rather include shape deviations due to, for example, manufacturing processes. Thus, the regions shown in the drawings are schematic in nature, and their shapes are not intended to show the actual shapes of the regions of the device, nor are they intended to limit the scope of the exemplary embodiments.

[0106] Currently, with improved living standards and a faster pace of life, cardiovascular and cerebrovascular diseases are major threats to people's health, claiming millions of lives each year. Timely and continuous blood pressure measurement not only helps prevent hypertension but also assists hypertensive patients in controlling their blood pressure and maintaining their health.

[0107] Blood pressure measurement mainly includes two methods: invasive and non-invasive. Invasive methods are the most direct and provide more accurate results, but they are not suitable for consumers to test themselves or for long-term monitoring; they can generally only be performed by a professional doctor in a hospital. Non-invasive methods, such as the Korotkoff sound method, oscillometric method, and pulse method, are more convenient to perform, although they may have some degree of error.

[0108] The Korotkoff sound test involves inflating a cuff to block blood flow, then slowly deflating it. The tester listens to the pulse sound with a stethoscope; the initial sound corresponds to systolic blood pressure, and the sound continues to be deflated until it disappears, representing diastolic blood pressure. This method is simple, but human error can occur due to the operator's visual or auditory limitations, and it is not suitable for continuous measurements.

[0109] The oscillometric method estimates blood pressure based on the relationship between pulse amplitude and cuff pressure, using the principle of pulse waveform. Mean blood pressure corresponds to the maximum pulse value, while systolic and diastolic pressures are determined by the proportion of the maximum pulse amplitude. Many electronic blood pressure monitors use this method, but it has a slightly larger margin of error.

[0110] The above two methods of blood pressure measurement require cuffs, stethoscopes, or oscilloscopes, involve a lot of equipment, and are not very convenient to operate, making them unsuitable for continuous blood pressure measurement and monitoring.

[0111] The pulse is formed by the heartbeat propagating outwards along the arteries and blood flow. As blood circulates within the vessels, the pulse varies slightly at different locations. Based on the correlation between the pulse and blood flow, blood pressure can be indirectly measured through the pulse. This method uses multi-point measurements instead of single-point measurements and utilizes the inherent relationships and changing patterns between points near the systolic and diastolic blood pressure points. Employing approximation and fitting calculation methods, it calculates the true systolic and diastolic blood pressure values, achieving continuous measurement of discontinuous events and obtaining relatively accurate blood pressure values.

[0112] Currently, pulse-based blood pressure measurement devices generally require cuff inflation, making them unsuitable for long-term blood pressure monitoring. For patients with cardiovascular diseases, hypertension, or other similar conditions, long-term monitoring is ideal, allowing them to promptly alert family and friends in emergencies and ensure timely treatment.

[0113] Furthermore, existing measurement devices are unreliable and inconsistent in their testing quality when blood pressure is not measured using a cuff.

[0114] In order to at least alleviate or solve one of the aforementioned technical problems, this disclosure provides a blood pressure measuring device.

[0115] Figure 1A is a side view of a blood pressure measuring device in some embodiments of this disclosure. Figure 1B is another side view of a blood pressure measuring device in some embodiments of this disclosure. Figure 1C is a plan view of a blood pressure measuring device in some embodiments of this disclosure. Figure 2A is an exploded view of a blood pressure measuring device in some embodiments of this disclosure. Figure 2B is a cross-sectional view of a blood pressure measuring device in some embodiments of this disclosure.

[0116] In some embodiments, as shown in Figures 1A, 1B, 2A, and 2B, a blood pressure measuring device of the present disclosure includes: a housing 100, a signal processor, a plurality of electrocardiogram (ECG) electrodes, and a pulse sensor assembly 200. For example, in the embodiments shown in Figures 1A, 1B, 1C, 2A, and 2B, the plurality of ECG electrodes includes a first ECG electrode 2 and a second ECG electrode 14.

[0117] Furthermore, the housing 100 has an internal receiving space where the signal processor is located. At least a portion of the ECG electrodes are located outside the housing 100 for acquiring ECG signals from the human body. Moreover, multiple ECG electrodes can acquire ECG signals from different parts of the human body.

[0118] At least a portion of the pulse sensor assembly 200 is located outside the housing 100 for acquiring pulse signals from a human body.

[0119] The electrocardiogram (ECG) electrodes and pulse sensor assembly 200 are electrically connected to a signal processor, which is configured to determine the blood pressure value based on the pulse signal and the ECG signal.

[0120] This embodiment of the present disclosure acquires electrocardiogram (ECG) signals from different locations on the human body using multiple ECG electrodes, acquires pulse signals from the human body using a pulse sensor assembly, and further calculates the human body's blood pressure based on the ECG and pulse signals using a signal processor, thereby realizing the measurement of human blood pressure.

[0121] In this embodiment of the disclosure, the number and specific location of the ECG electrodes can be set according to actual needs, and this embodiment of the disclosure does not limit this.

[0122] Specifically, in the embodiments shown in Figures 1A, 1B, 2A, and 2B, the first ECG electrode 2 is located on one side of the housing 100 and is used to collect a first ECG signal from a human finger. The second ECG electrode 14 is located on the side of the housing 100 away from the first ECG electrode 2 and is used to collect a second ECG signal from a human wrist. At least a portion of the pulse sensor assembly 200 is located on the side of the housing 100 away from the first ECG electrode 2 and is used to collect a pulse signal from a human wrist.

[0123] The housing 100 has an opening. The first ECG electrode 2, the second ECG electrode 14, and the pulse sensor assembly 200 are electrically connected to the signal processor through the opening.

[0124] The signal processor is configured to determine the blood pressure value based on the pulse signal, the first electrocardiogram signal, and the second electrocardiogram signal.

[0125] In the blood pressure measuring device provided in this embodiment, during use, the second ECG electrode 14 and the pulse sensor assembly 200 can be attached to the inside of the wrist. The pulse sensor assembly 200 collects pulse signals, and the second ECG electrode 14 collects second ECG signals at the wrist. Simultaneously, a finger presses on the first ECG electrode 2, and the first ECG electrode 2 collects first ECG signals at the finger. The blood pressure value is calculated by a signal processor based on the collected signals and the pulse signal, thereby realizing blood pressure detection. For example, the PWTT method is used to measure blood pressure. PWTT refers to the time difference between the peak value of the electrocardiogram (ECG) and the inflection point of the pulse wave (Peripheraw Pulse Wave). Generally, the PWTT method uses this time difference and then directly calculates the patient's blood pressure value based on sample data in a database. For example, a blood pressure calculation model can be constructed based on sample data in the database, and the blood pressure value can be obtained by inputting the time difference into the blood pressure calculation model.

[0126] In this embodiment, a first ECG electrode 2 and a second ECG electrode 14 for collecting ECG signals are respectively disposed on opposite sides of the housing 100, and ECG signals are collected at different positions, which can ensure the accuracy of ECG signal acquisition. Furthermore, this embodiment allows for comfortable and convenient blood pressure measurement without the need for a cuff, and is convenient to carry or wear, allowing for measurement anytime, anywhere.

[0127] In some embodiments, as shown in FIG1B, the surface of the second ECG electrode 14 away from the housing 100 has a plurality of conductive protrusions 14-1.

[0128] In this embodiment, providing multiple conductive protrusions 14-1 on the surface of the second ECG electrode 14 away from the housing 100 increases the contact area between the second ECG electrode 14 and the wrist skin, thereby ensuring the acquisition of ECG signals by the second ECG electrode 14 at the wrist. Simultaneously, providing multiple conductive protrusions 14-1 also avoids large-area direct contact between the second ECG electrode 14 and the wrist skin, which could lead to sweating and affect the accuracy of the acquired signals.

[0129] In some embodiments, as shown in Figures 2A and 2B, the housing 100 includes a first housing portion 3 and a second housing portion 9 disposed opposite to and connected to each other, and the first housing portion 3 and the second housing portion 9 define an accommodating space.

[0130] The embodiments of this disclosure provide a blood pressure measuring device by setting up a first housing part 3 and a second housing part 9 that are connected. This facilitates the assembly of various components, such as the pulse sensor assembly 200 and the signal processor, with the first housing part 3 or the second housing part 9 respectively. After assembly, they are fixedly connected together.

[0131] Figure 3A is a schematic diagram of the structure of a pulse sensor in some embodiments of this disclosure.

[0132] In some embodiments, as shown in Figures 2A and 3A, the opening on the housing 100 includes a first opening 9-8 corresponding to the pulse sensor assembly 200, wherein the first opening 9-8 is formed on the second housing portion 9. The pulse sensor assembly 200 includes: a mounting bracket 10, a sensor 11, and a first connector.

[0133] The mounting bracket 10 is disposed in the receiving space and connected to the housing 100. The mounting bracket 10 has a first receiving hole 10-2. The sensor 11 is disposed on the mounting bracket 10 and passes through the first opening 9-8. The sensor 11 is used to collect pulse signals. A first connector is disposed in the receiving space, passes through the first receiving hole 10-2, and its two ends are electrically connected to the sensor 11 and the signal processor, respectively.

[0134] Optionally, as shown in FIG2A, the first connector includes an electrically connected sensor transmission line 13 and a sensor connection terminal 11-1. At least a portion of the sensor connection terminal 11-1 passes through the first receiving hole 10-2, and the sensor connection terminal 11-1 is electrically connected to the sensor 11.

[0135] In this embodiment, the sensor 11 is fixed on the mounting bracket 10, which facilitates the adjustment of the position of the sensor 11 to achieve contact between the sensor 11 and the skin of the wrist, thereby ensuring the accuracy of the pulse signal.

[0136] Additionally, at least a portion of sensor 11 is located outside the housing. For example, as shown in FIG2B, sensor 11 is located outside housing 100. In another example, a portion of sensor 11 is located outside housing 100, and another portion is located within the housing space.

[0137] In this embodiment of the disclosure, at least a portion of the sensor 11 is located outside the housing, that is, as shown in FIG2B, the sensor 11 can protrude from the housing 100 by a certain height h. In this case, when the housing 100 comes into contact with human skin, the sensor 11 can collect the pulse signal in a timely and accurate manner.

[0138] Figure 3B is a partial structural schematic diagram of the blood pressure measuring device in some embodiments of this disclosure. Figure 3C is another partial structural schematic diagram of the blood pressure measuring device in some embodiments of this disclosure. Figure 3D is another partial structural schematic diagram of the blood pressure measuring device in some embodiments of this disclosure. Furthermore, Figures 3C and 3D are side views of the three-dimensional structure shown in Figure 3B from different perspectives.

[0139] In some embodiments, as shown in FIG3A, the sensor 11 includes a base 111 and a sensing part 112 for acquiring pulse signals.

[0140] The base 111 is detachably connected to the fixing frame 10. For example, as shown in Figure 3A, the fixing frame 10 is provided with a plurality of third limiting parts 10-4 for limiting the base 111. Furthermore, the fixing frame is also provided with a plurality of third buckles 10-1 for mounting the base 111 onto the fixing frame 10.

[0141] The sensing unit 112 is located on the side of the base 111 away from the fixing frame 10 and is electrically connected to the first connector. Specifically, it is electrically connected to the sensor connection terminal 11-1.

[0142] In this embodiment, the sensing unit 112 is fixed on the mounting bracket 10 by the base 111, which facilitates the installation of the sensing unit 112.

[0143] In some embodiments, as shown in Figures 2A and 2B, the pulse sensor assembly 200 further includes a protective film 12 disposed on the side of the sensor 11 away from the mounting bracket 10.

[0144] In this embodiment, a protective film 12 is provided on the side of the sensor 11 away from the mounting bracket 10 to prevent wear on the sensor 11 and extend its service life.

[0145] Optionally, the material of the protective film 12 may include a soft rubber-like material. Choosing a soft rubber-like material to prepare the protective film 12 can make the protective film 12 have greater elasticity and resilience, which can not only transmit pulse pressure well, but also protect the sensing part 112.

[0146] In some embodiments, as shown in FIG2A, a plurality of positioning posts 9-3 are provided on the inner wall of the housing 100. Specifically, for example, the positioning posts 9-3 are provided on the side of the second housing part 9 facing the first housing part 3. The fixing bracket 10 is provided with a first positioning hole 10-3, and the first positioning hole 10-3 corresponds one-to-one with the positioning post 9-3.

[0147] As shown in Figure 3B, the pulse sensor assembly 200 also includes a protective film mounting part 24 that is fixedly connected to the edge of the protective film 12. The protective film mounting part 24 has a second positioning hole 24-1, which corresponds to the positioning post 9-3.

[0148] The positioning pin 9-3 passes through the second positioning hole 24-1 and the first positioning hole 10-3. The protective film mounting part 24 is located between the fixing frame 10 and the housing 100, specifically between the fixing frame 10 and the second housing part 9. The protective film 12 passes through the first opening 9-8.

[0149] As shown in Figure 2A, the housing 100 is also provided with a first latch 9-5 and a second latch 9-6. Specifically, the first latch 9-5 and the second latch 9-6 are located on the side of the second housing part 9 facing the first housing part 3, and are located on opposite sides of the first opening 9-8. The first latch 9-5 and the second latch 9-6 are used to fix the fixing bracket 10 to the housing 100, that is, to the second housing part 9.

[0150] In this embodiment, the initial positioning of the protective film mounting part 24 and the fixing frame 10 can be achieved through the positioning post 9-3 on the housing, the second positioning hole 24-1 on the protective film mounting part 24, and the first positioning hole 10-3 on the fixing frame 10. Then, the fixing frame 10 is restricted to the side of the second housing part 9 facing the first housing part 3 by the first buckle 9-5 and the second buckle 9-6, while the protective film mounting part 24 is restricted between the fixing frame 10 and the second housing part 9, thereby realizing the installation of the fixing frame 10 and the protective film mounting part 24.

[0151] Understandably, the protective film mounting portion 24 and the fixing bracket 10 are together secured between the second housing portion 9 and the latches (first latch 9-5, second latch 9-6). Furthermore, the distance between the second housing portion 9 and the latches can be designed to be less than the sum of the thicknesses of the protective film mounting portion 24 and the fixing bracket 10, thus achieving an interference fit. This ensures that the protective film mounting portion 24 can fit tightly against the inner surface of the second housing portion 9, and a sealing structure can be formed at the joint between the protective film mounting portion 24 and the second housing portion 9. This prevents liquid from entering the receiving space from the joint between the protective film mounting portion 24 and the second housing portion 9.

[0152] Additionally, it is understood that the protective film 12 can form a receiving slot facing the receiving space, and the sensor 11 is located in the receiving slot.

[0153] Specifically, in one example, as shown in Figure 3C, the length L of the protective film 12 is 21 mm. The length L of the protective film 12 refers to the dimension in the direction of extension of the housing.

[0154] As shown in Figure 3D, the thickness H of the protective film 12 is 3.6 mm.

[0155] It should be noted that the thickness of the protective film 12 does not refer to the thickness of the film layer itself, but rather to the dimension of the outer part of the casing that accommodates the slot.

[0156] As shown in Figures 3C and 3D, the width W of the protective film 12 is 11.6 mm. The width W of the protective film 12 is the dimension of the protective film 12 in the width direction of the housing.

[0157] In some embodiments, as shown in Figures 2A and 2B, the signal processor includes an analog circuit board 8 and a digital circuit board 18. The analog circuit board 8 is electrically connected to the first ECG electrode 2, the second ECG electrode 14, and the pulse sensor assembly 200. Specifically, the analog circuit board 8 is electrically connected to the sensor 12 in the pulse sensor assembly 200.

[0158] The analog circuit board 8 is configured to receive and process a first electrocardiogram (ECG) signal, a second ECG signal, and a pulse signal, and transmit the processed signals to the digital circuit board 18. The signal processing by the analog circuit board 8 includes, for example, signal amplification and noise removal.

[0159] The digital circuit board 18 is configured to determine the blood pressure value based on the processed signal.

[0160] In this embodiment, the first ECG electrode 2, the second ECG electrode 14, and the pulse sensor assembly 200 are all electrically connected to the analog circuit board 8, and transmit the collected ECG signal or pulse signal to the analog circuit board 8. After processing, the analog circuit board 8 directly transmits the signal to the digital circuit board 18 for blood pressure calculation, which helps to improve data processing efficiency.

[0161] In some embodiments, as shown in FIG2A, the first housing portion 3 includes a support plate 32 and a frame 31 surrounding the support plate 32. The frame 31 is detachably connected to the second housing portion 9, and the frame 31, the support plate 32, and the second housing portion 9 define an accommodating space. Light-transmitting windows 3-8 are formed on the support plate 32. The cover plate 1 is located on the side of the support plate 32 away from the display screen 25.

[0162] In this embodiment, the first housing part 3 is designed to include a support plate 32 and a frame 31, so that the size of the accommodating space can be adjusted by the size of the frame 31.

[0163] Figure 4A is a schematic diagram of another part of the structure of the blood pressure measuring device in some embodiments of this disclosure. Figure 4B is a schematic diagram of another part of the structure of the blood pressure measuring device in some embodiments of this disclosure.

[0164] In some embodiments, as shown in Figures 4A and 4B, the blood pressure measuring device further includes a display screen 25. Correspondingly, as shown in Figure 2A, the housing 100 also has a light-transmitting window 3-8. The display screen 25 is disposed in the receiving space, and the display area of ​​the display screen 25 is positioned opposite to the light-transmitting window 3-8.

[0165] Optionally, the digital circuit board 18 is provided with a display screen connection terminal 18-1, the bonding area of ​​the display screen 25 is electrically connected to the display screen connection terminal 18-1, and the display screen 25 can be fixed on the digital circuit board 18.

[0166] In this embodiment of the present disclosure, after the digital circuit board 18 calculates the blood pressure value, it can display the blood pressure on the display screen 25, making it convenient for the user to read the blood pressure value information.

[0167] Furthermore, as shown in Figures 2A and 2B, the blood pressure measuring device also includes a cover plate 1. The cover plate 1 is located on the side of the housing 100 away from the second ECG electrode 14, and is positioned opposite the display screen 25. The cover plate 1 covers the light-transmitting window 3-8, and a first sealing member is provided between the housing 100 and the cover plate 1, surrounding the light-transmitting window 3-8. Specifically, the first sealing member is disposed between the first housing portion 3 and the cover plate 1.

[0168] In one example, the first sealant can be a sealant that is bonded to both the cover plate 1 and the first housing portion 3 to achieve a seal. Specifically, for example, as shown in FIG2A, a third sealing groove 3-10 surrounding the light-transmitting window 3-8 can be formed on the support plate 32. Then, sealant is applied to the third sealing groove 3-10, and the edge of the cover plate 1 is bonded to the sealant. After the sealant solidifies, it becomes the first sealant.

[0169] The first seal in this embodiment of the present disclosure can prevent a gap between the housing 100 and the cover plate 1, thereby further preventing liquid from entering the housing.

[0170] In some embodiments, as shown in FIG2A, the openings on the housing 100 include a second opening 3-7 corresponding to the first ECG electrode 2 and a third opening 9-9 corresponding to the second ECG electrode 14, wherein the second opening 3-7 and the third opening 9-9 are formed on the second housing portion 9.

[0171] Optionally, the analog circuit board 8 includes a circuit board body 83, a first connecting electrode 81, and a second electrical connecting electrode 82.

[0172] The first connecting electrode 81 is located on the side of the main body of the circuit board 83 near the first ECG electrode 2, and the first connecting electrode 81 passes through the second opening 3-7 and is electrically connected to the first ECG electrode 2, for transmitting the first ECG signal collected by the first ECG electrode 2 to the main body of the circuit board 83.

[0173] The second electrical connection electrode 82 is located on the side of the main body of the circuit board 83 near the second ECG electrode 14, and the second connection electrode 82 passes through the third opening 9-9 and is electrically connected to the second ECG electrode 14 to transmit the second ECG signal collected by the second ECG electrode 14 to the main body of the circuit board 83.

[0174] The main body 83 of the circuit board is specifically configured to process the first electrocardiogram signal, the second electrocardiogram signal, and the pulse signal.

[0175] Optionally, the main body 83 of the circuit board has a first input terminal and a second input terminal, a first connecting electrode 81 electrically connected to the first input terminal, and a second connecting electrode 82 electrically connected to the second input terminal.

[0176] In this embodiment, the first ECG electrode 2 and the second ECG electrode 14 are disposed on the outside of the housing 100. Therefore, by providing corresponding second openings 3-7 and third openings 9-9 on the housing 100, and by using a first connecting electrode 81 passing through the second opening 3-7 and a second connecting electrode 82 passing through the third opening 9-9, the first ECG electrode 2 and the second ECG electrode 14 are electrically connected to the circuit board body 83, respectively. Furthermore, the first connecting electrode 81 and the second connecting electrode 82 are columnar and also provide support.

[0177] Figure 5 is a schematic diagram of another part of the structure of the blood pressure measuring device in some embodiments of this disclosure.

[0178] In some embodiments, as shown in Figures 2A and 2B, the digital circuit board 18 and the analog circuit board 8 are disposed opposite to each other. As shown in Figure 4A, a first connecting portion 18-2 is provided on the side of the digital circuit board 18 away from the analog circuit board 8. As shown in Figure 5, a second connecting portion 8-1 is provided on the side of the analog circuit board 8 away from the digital circuit board 18.

[0179] The signal processor also includes a second connector 20, one end of which is electrically connected to the first connector 18-2, and the other end of which is electrically connected to the second connector 8-1. Signal transmission occurs between the analog circuit board 8 and the digital circuit board 18 via the second connector 20.

[0180] In this embodiment, by providing a first connecting portion 18-2 on the side of the digital circuit board 18 away from the analog circuit board 8, and a second connecting portion 8-1 on the side of the analog circuit board 8 away from the digital circuit board 18, and electrically connecting the first connecting portion 18-2 and the second connecting portion 8-1 using a second connecting member 20, it is possible to avoid short circuits or severe overheating caused by the first connecting portion 18-2 and the second connecting portion 8-1 being too close together. The second connecting member 20 can be a flexible circuit board. Optionally, as shown in Figures 2A and 5, the digital circuit board 18 and the analog circuit board 8 are connected to the housing 100 by fasteners such as fixing screws 17.

[0181] Figure 6 is a schematic diagram of another part of the structure of the blood pressure measuring device in some embodiments of this disclosure.

[0182] In some embodiments, as shown in Figures 2A and 6, the blood pressure measuring device further includes a wristband mounting portion 4 and a snap-fit ​​assembly 6, wherein the wristband mounting portion 4 is detachably connected to the frame 31 via the snap-fit ​​assembly 6. There may be one or more wristband mounting portions 4. In Figures 2A and 6, there are two wristband mounting portions 4.

[0183] In this embodiment of the present disclosure, by providing a wristband mounting part 4 that is detachably connected to the frame 31, the blood pressure measuring device can be connected to an external portable tool through the wristband mounting part 4, thereby improving the portability of the blood pressure measuring device.

[0184] Figure 7A is a schematic diagram of the structure of a blood pressure measuring device in some other embodiments of this disclosure. Figure 7B is a schematic diagram of the structure of a wrist-worn blood pressure measuring device in some embodiments of this disclosure. Figure 7C is a schematic diagram of another part of the structure of a blood pressure measuring device in some embodiments of this disclosure.

[0185] In some embodiments, as shown in Figures 7A, 7B and 7C, the blood pressure measuring device further includes a wristband 21 detachably connected to the wristband mounting portion 4.

[0186] This embodiment of the disclosure enables the wearable blood pressure measuring device by configuring a detachable wristband, thereby facilitating daily blood pressure measurement. Specifically, as shown in FIG8B, when the blood pressure measuring device is worn on the wrist, the second ECG electrode 14 and the pulse sensor assembly 200 are in contact with the skin of the wrist, and the first ECG electrode 2 can be touched by the fingers of the other hand.

[0187] Optionally, as shown in Figures 8A and 8C, one end of the wristband 21 is fixedly connected to a wristband mounting part 4, and the other end of the wristband 21 is adjustablely connected to another wristband mounting part 4. Specifically, as shown in Figure 8A, the other end of the wristband 21 is provided with multiple locking protrusions 21-1, which are used to adjust the length of the wristband 21.

[0188] In some embodiments, as shown in Figures 2A and 6, the wristband mounting portion 4 includes a mounting body 41 and a hook 42 disposed on the mounting body 41. A first mounting groove 3-1 is provided on the frame 31 for mounting the buckle assembly 6. Specifically, a mounting hole 9-10 is provided on the second housing portion 9 opposite to the first mounting groove 3-1. The buckle assembly 6 can extend into the first mounting groove 3-1 through the mounting hole 9-10. A locking hole 3-9 is provided on the side wall of the first mounting groove 3-1, through which the hook 42 can be detachably connected to the buckle assembly 6.

[0189] Optionally, as shown in Figure 2A, the mounting body 41 includes a mounting wall 411 and a mounting ring 412. The mounting ring 412 is fixedly connected to the mounting wall 411. The mounting ring 412 is used to connect the blood pressure measuring device to an external wearable object, such as a wristband 21.

[0190] Figure 8 is a schematic diagram of the structure of the snap-fit ​​assembly in some embodiments of this disclosure.

[0191] In some embodiments, as shown in Figures 2A and 6, a sliding groove 3-2 is further provided on the side wall of the first mounting groove 3-1. As shown in Figures 6 and 8, the snap-fit ​​assembly 6 includes: a first mounting post 61, a second mounting post 62, a force-applying part 64, and a first limiting part 63. The two ends of the force-applying part 64 are respectively connected to the first mounting post 61 and the second mounting post 62, and the first mounting post 61 and the second mounting post 62 can pass through the mounting hole 9-10 and extend into the first mounting groove 3-1. The two ends of the first limiting part 63 are respectively connected to the first mounting post 61 and the second mounting post 62, and there is a gap between the first limiting part 63 and the force-applying part 64. Optionally, the two ends of the first limiting part 63 are fixedly connected to the force-applying part 64. The gap between the first limiting part 63 and the force-applying part 64 allows the hook 42 to pass through, and the hook 42 passes through the gap between the first limiting part 63 and the force-applying part 64 and engages with the first limiting part 63. Furthermore, the force-applying part 64 is provided with a protrusion 6-1, which can extend into the slide groove 3-2 and slide relative to the slide groove 3-2 along the extending direction of the slide groove 3-2. The slide groove 3-2 extends along the depth direction of the first mounting groove 3-1.

[0192] Both the first mounting post 61 and the second mounting post 62 are fitted with elastic elements 5. When at least a portion of the first mounting post 61 and at least a portion of the second mounting post 62 are located in the first mounting groove 3-1 and the force-applying part 64 is not subjected to external force, the elastic elements 5 are in a compressed state, and the hook 42 can engage with the first limiting part 63. When the force-applying part 64 is pressed along the depth direction of the first mounting groove 3-1, the first limiting part 63 can separate from the hook 42.

[0193] In this embodiment, by applying pressure to the pressing force portion 64, the first limiting portion 63 can be moved, thereby separating from the hook 42 and thus disassembling the wristband mounting portion 4. Furthermore, when not pressed, the elastic member 5 applies a spring force towards the second housing portion to the first limiting portion 63, causing the hook 42 to engage with the first limiting portion 63, thus fixing the wristband mounting portion 4 to the housing. Additionally, the cooperation between the protrusion 6-1 and the sliding groove 3-2 prevents the buckle assembly 6 from being completely pushed out of the first mounting groove 3-1 by the elastic member 5 when the wristband mounting portion 4 is not installed.

[0194] Figure 9 is a schematic diagram of another part of the structure of the blood pressure measuring device in some embodiments of this disclosure.

[0195] In some embodiments, as shown in FIG9, the housing 100 has a charging port 9-2. Specifically, for example, the second housing portion 9 has a charging port 9-2. As shown in FIG2A, the blood pressure measuring device further includes a rechargeable battery 7 and a charging assembly. The rechargeable battery 7 is disposed in the receiving space and is electrically connected to the signal processor. Specifically, the rechargeable battery 7 is electrically connected to the digital circuit board 18. The charging assembly is disposed in the receiving space and is electrically connected to the signal processor. The charging end of the charging assembly is exposed by the charging port 9-2. The charging assembly is used to receive electrical signals provided by an external power source and transmit the electrical signals to the signal processor.

[0196] The signal processor is also configured to perform voltage conversion on the electrical signal and transmit the converted electrical signal to the rechargeable battery 7.

[0197] Figure 10 is a schematic diagram of another part of the structure of the blood pressure measuring device in some embodiments of this disclosure.

[0198] In some embodiments, as shown in FIG10, the charging assembly includes at least two charging pins 16. One end of the charging pin 16 is exposed by the charging port 9-2, which is obviously the charging end. The other end of the charging pin 16 is electrically connected to a signal processor and is in a compressed state. Specifically, the other end of the charging pin 16 is electrically connected to a digital circuit board 18, which is configured to perform voltage conversion on the electrical signal from an external power source and transmit the converted electrical signal to the rechargeable battery 7.

[0199] Optionally, as shown in Figure 5, the analog circuit board 8 has a clearance hole 8-4 corresponding to the charging spring pin 16. The charging spring pin 16 passes through the clearance hole 8-4 and is electrically connected to the digital circuit board 18.

[0200] Optionally, as shown in FIG10, the charging spring 16 includes a first charging part 161 and a second charging part 162. One end of the first charging part 161 extends into and is exposed by the charging port 9-2 for electrical connection with an external power source. The other end of the first charging part 161 is electrically connected to one end of the second charging part 162, and the second charging part 162 is movable relative to the first charging part 161 in a direction away from or towards the first charging part 161. For example, the end of the first charging part 161 near the second charging part 162 has a receiving groove, one end of the second charging part 162 is located in the receiving groove, and the depth of the second charging part 162 in the receiving groove is adjustable. When the charging spring is in a compressed state, the second charging part 162 is deeper in the receiving groove. The other end of the second charging part 162 is electrically connected to the digital circuit board 18.

[0201] In this embodiment of the disclosure, the charging spring 16 is in a compressed state, which can ensure the electrical connection between the charging spring 16 and the digital circuit board 18.

[0202] In some embodiments, a second sealing member is provided on the inner wall of the housing 100, surrounding the charging spring pin 16. The second sealing member is used to seal the gap between the charging spring pin 16 and the housing 100.

[0203] Specifically, a second seal is disposed between the second housing portion 9 and the charging spring pin 16. For example, the second seal can be a sealant, which bonds the second housing portion 9 and the charging spring pin 16 respectively, thereby achieving a seal between the second housing portion 9 and the charging spring pin 16 and preventing liquid from entering the receiving space due to gaps between the second housing portion 9 and the charging spring pin 16.

[0204] In one example, as shown in Figure 10, a groove 9-11 surrounding the charging port 9-2 is formed on the inner side of the second housing portion 9. It is understood that after the charging spring pin 16 is installed in the charging port 9-2, the groove 9-11 surrounds the charging spring pin 16; for example, the groove 9-11 specifically surrounds the first charging portion 161. Sealant is applied to the groove 9-11, and after the sealant solidifies, a second seal is formed.

[0205] In some embodiments, as shown in FIG10, the charging assembly further includes a magnet 15, which is optionally located between two adjacent charging springs 16. The magnet 15 is used to generate an attractive force to an external power source so that the external power source and the first charging part 161 exposed by the charging port 9-2 are attracted to each other.

[0206] Figure 11 is a schematic diagram of the charging process of the blood pressure measuring device in some embodiments of this disclosure.

[0207] As shown in Figure 11, the charging spring pin 16 and the charging head 22 can be magnetically charged.

[0208] Figure 12 is a schematic diagram of the assembly structure of the blood pressure measuring device in some embodiments of this disclosure.

[0209] In some embodiments, as shown in FIG12, the first housing portion 3 includes a first portion 301 and a second portion 302 connected to the first portion 301. For example, the boundary between the first portion 301 and the second portion 302 is located at the position of dashed line a. The second housing portion 9 includes a third portion 901 opposite to the first portion 301 and a fourth portion 902 opposite to the second portion 302. For example, the boundary between the third portion 901 and the fourth portion 902 is located at the position of dashed line b. The thickness direction of the first portion 301 intersects the thickness direction of the second portion 302, and the thickness directions of the third portion 901 and the fourth portion 902 intersect.

[0210] Furthermore, the first ECG electrode 2 is positioned opposite to the first part 301, the second ECG electrode 14 is positioned opposite to the third part 901, and the pulse sensor assembly 200 is positioned opposite to the fourth part 902.

[0211] In this embodiment, the first part and the second part connected to the first part form an angle, which is set to be relatively large, for example, an obtuse angle. The purpose is to achieve contact between the housing 100 and the wrist, thereby ensuring contact between the second ECG electrode 14 and the pulse sensor assembly 200 and the skin of the wrist, and ultimately ensuring accurate measurement of ECG and pulse signals.

[0212] In some embodiments, as shown in FIG2A, the housing 100 also has a power button hole 3-3. For example, the power button hole 3-3 is specifically formed on the first housing portion 3. The blood pressure measuring device also includes a power button 19, which corresponds to and is located in the power button hole 3-3, and a portion of the power button 19 is located on the outside of the housing 100 for easy pressing. The signal processor is provided with a switch 18-3, for example, the switch 18-3 is specifically provided on the digital circuit board 18. When the power button 19 is pressed, the power button 19 can contact the switch 18-3 and apply force to the switch 18-3 to activate the blood pressure measuring device.

[0213] Figure 13A is a three-dimensional structural diagram of the power button in some embodiments of this disclosure. In Figure 13A, (a) and (b) are three-dimensional structural diagrams from two different angles. Figure 13B is a partial cross-sectional structural diagram of the blood pressure measuring device in some embodiments of this disclosure.

[0214] In some embodiments, as shown in Figures 13A and 13B, the power button 19 includes a flexible button portion 192 and a rigid button portion 191. A portion of the flexible button portion 192 is connected to the inner side of the housing 100; for example, as shown in Figure 2A, the flexible button portion 192 can be fixedly connected to the inner side of the first housing portion 3. The rigid button portion 191 is connected to another portion of the flexible button portion 192 and passes through the power button hole 3-3. The rigid button portion 191 has a higher hardness than the flexible button portion 192, or the flexible button portion 192 has a higher elasticity than the rigid button portion 191.

[0215] For example, the flexible button portion 192 can be made of soft silicone. The rigid button portion 191 can be made of a rigid plastic material.

[0216] In this embodiment, the rigid button portion 191 passes through the power button hole 3-3, allowing the user to press the rigid button portion 191. Furthermore, under pressure from the rigid button portion 191, the flexible button portion 192 deforms, thereby contacting the switch 18-3 on the digital circuit board 18 to activate the blood pressure measuring device. Even further, a portion of the flexible button portion 192 is sealed to the inside of the first housing portion 3; for example, the flexible button portion 192 and the first housing portion 3 are bonded together with sealant to achieve a seal and prevent liquid from entering the containment space.

[0217] In some embodiments, as shown in FIG13B, the flexible button portion 192 has a through hole 19-1 opposite to the power button hole 3-3. The rigid button portion 191 includes a first sub-part 1911, a second sub-part 1912, and a third sub-part 1913 connected in sequence. The second sub-part 1912 is located inside the through hole 19-1, and the first sub-part 1911 and the third sub-part 1913 are located on opposite sides of the through hole 19-1 in its extending direction. The dimensions of both the first sub-part 1911 and the third sub-part 1913 are larger than the diameter of the through hole 19-1. It is understood that the fact that the dimensions of both the first sub-part 1911 and the third sub-part 1913 are larger than the diameter of the through hole 19-1 means that neither the first sub-part 1911 nor the third sub-part 1913 can extend into or pass through the through hole 19-1.

[0218] In this embodiment, the second sub-part 1912 fills the through hole 19-1, and neither the first sub-part 1911 nor the third sub-part 1913 can extend into or pass through the through hole 19-1. This ensures the connection between the rigid button part 191 and the flexible button part 192 while simultaneously sealing the through hole 19-1, preventing liquid from entering the power button 19 through the through hole 19-1. Furthermore, the first sub-part 1911 and the flexible button part 192, as well as the third sub-part 1913 and the flexible button part 192, can be bonded and fixed using sealant, thereby improving the sealing performance of the power button 19.

[0219] In some embodiments, as shown in FIG13B, the first housing portion 3 includes a second limiting portion 3-12 facing the power button hole 3-3. Optionally, the second limiting portion 3-12 is located at the edge of the power button hole 3-3 away from the receiving space. The second limiting portion 3-12 is used to restrict the first sub-part 1911 within the power button hole 3-3. Specifically, when the user presses the power button 19, the rigid button portion 191 moves towards the receiving space. The flexible button portion 192 deforms in the direction away from the power button hole 3-3. When the user releases the button, the rigid button portion 191 rebounds under the elastic force of the flexible button portion 192. The second limiting portion 3-12 can prevent the flexible button portion 192 from rebounding too much and damaging the power button 19.

[0220] In some embodiments, a third sealing member surrounding the second opening 3-7 is provided between the housing 100 and the first ECG electrode 2. For example, the third sealing member is specifically provided between the first housing portion 3 and the first ECG electrode 2. And / or, a fourth sealing member surrounding the third opening 9-9 is provided between the housing 100 and the second ECG electrode 14. For example, the fourth sealing member is specifically provided between the second housing portion 9 and the second ECG electrode 14.

[0221] In one example, the third seal can be a sealant, which is bonded to both the first ECG electrode 2 and the first housing portion 3 to achieve a seal. Specifically, for example, as shown in FIG2A, a second sealing groove 3-11 is formed on the support plate 32 of the first housing portion 3, which surrounds the second opening 3-7. Then, sealant is applied to the second sealing groove 3-11, and the edge of the first ECG electrode 2 is bonded to the sealant. After the sealant solidifies, it becomes the third seal. This embodiment of the present disclosure can prevent a gap between the first housing portion 3 and the first ECG electrode 2 by providing a third seal, thereby further preventing liquid from entering the containment space.

[0222] Figure 14 is a partial structural schematic diagram of the blood pressure measuring device in some other embodiments of this disclosure. Among them, (a) and (b) in Figure 14 are three-dimensional structural schematic diagrams from different angles.

[0223] In another example, the fourth seal can be a sealant, which is bonded to both the second ECG electrode 14 and the second housing portion 9 to achieve a seal. Specifically, for example, as shown in FIG14, a first sealing groove 9-1 is formed on the second housing portion 9, which surrounds the third opening 9-9. Simultaneously, as shown in FIG14, a fourth sealing groove 14-2 is provided on the side of the second ECG electrode 14 facing the second housing portion 9, corresponding to the first sealing groove 9-1. Sealant is then applied to either the first sealing groove 9-1 or the fourth sealing groove 14-2 to bond the second ECG electrode 14 to the second housing portion 9. After the sealant solidifies, it forms the fourth seal. This embodiment of the present disclosure avoids gaps between the second housing portion 9 and the second ECG electrode 14 by providing a fourth seal, thereby further preventing liquid from entering the containment space.

[0224] In some embodiments, the blood pressure measuring device further includes a fifth seal located between the first housing portion 3 and the second housing portion 9. The fifth seal is used to securely bond the first housing portion 3 and the second housing portion 9 to seal the connection between the first housing portion 3 and the second housing portion 9, preventing liquid from entering the receiving space.

[0225] In some embodiments, as shown in FIG2A, the blood pressure measuring device further includes an antenna 23 for providing communication signals to the blood pressure measuring device. Specifically, the antenna 23 is electrically connected to the digital circuit board 18.

[0226] In this embodiment of the disclosure, the blood pressure measuring device has a length of 3 to 8 cm, a width of 1 to 3 cm, and a thickness of 0.5 to 1.2 cm.

[0227] For example, the blood pressure measuring device shown in Figure 1A of this disclosure has dimensions of 56mm × 24mm × 9mm, or 51mm × 24mm × 10mm.

[0228] The embodiments disclosed herein integrate the acquisition and processing of electrocardiogram signals and pulse signals into a blood pressure measuring device, which facilitates the miniaturization of the blood pressure measuring device.

[0229] The structure and assembly process of this disclosure are described below with reference to a specific embodiment. The assembly process of the blood pressure measuring device in this embodiment includes the following steps:

[0230] As shown in Figure 9, a first sealing groove 9-1 is provided on the surface of the second housing part 9 away from the first housing part 3. The first sealing groove 9-1 is used to fill the fourth sealing element for a fixed and sealed connection with the second ECG electrode 14. A third opening 9-9 is formed at the bottom of the first sealing groove 9-1.

[0231] Figure 15 is a schematic diagram of another part of the structure of the blood pressure measuring device in some embodiments of this disclosure.

[0232] Step 1: Apply sealant, such as 3M adhesive, to the surface of the first sealing groove 9-1 in Figure 9. Use the sealant to fix and adhere the second ECG electrode 14 to the surface of the first sealing groove 9-1. Then, fix the charging spring 16 in the charging port 9-2 to obtain the structure shown in Figure 15. In this embodiment, fixing the second ECG electrode 14 in the first sealing groove 9-1 improves the stability of the second ECG electrode 14 and avoids excessive protrusion of the second ECG electrode 14 relative to the second housing portion 9, thus preventing discomfort for the user when carrying the blood pressure test device.

[0233] Step 2: Fix the sensor protective film 12 to the second housing part 9. Specifically, as shown in FIG10, the second housing part 9 is provided with a plurality of positioning posts 9-3. As shown in FIG2A, the pulse sensor assembly 200 also includes a protective film mounting part 24. The protective film mounting part 24 is arranged around the protective film 12, and the edge of the protective film 12 is fixedly connected to the protective film mounting part 24. The protective film mounting part 24 is fixed between the fixing frame 10 and the second housing part 9. Specifically, as shown in FIG2A, the fixing frame 10 is provided with a first positioning hole 10-3, and the protective film mounting part 24 is provided with a second positioning hole 24-1. The positioning posts 9-3 can pass through the second positioning hole 24-1 and the first positioning hole 10-3 to position the protective film mounting part 24 and the fixing frame 10 on the second housing part 9. Further, the protective film mounting part 24 and the fixing frame 10 can be fixedly connected to the second housing part 9 by tightening the positioning posts 9-3 with screws or other fasteners on the side of the fixing frame 10 away from the protective film mounting part 24.

[0234] Step 3: As shown in Figure 10, the second housing part 9 has a fixing groove 9-4 for fixing the magnet 15. The magnet 15 is glued and fixed in the fixing groove 9-4 of the second housing part 9 using sealant.

[0235] Step 4: As shown in Figure 3A, the mounting bracket 10 has two opposing third clips 10-1. The sensor 11 is fixed to the mounting bracket 10 via the third clips 10-1, thus obtaining the pulse sensor assembly 200. Specifically, referring to Figures 2A and 3A, the base 111 is fixed in the first receiving hole 10-2 via the third clips 10-1, and at least a portion of the sensor connection terminal 11-1 is located in the first receiving hole 10-2.

[0236] Figure 16A is a schematic diagram of another part of the structure of the blood pressure measuring device in some embodiments of this disclosure. Figure 16B is a schematic diagram of another part of the structure of the blood pressure measuring device in some embodiments of this disclosure. Specifically, Figure 16B is a plan view of the fixing frame 10 on the other side of the structure shown in Figure 16A.

[0237] Step 5: Fix the prepared pulse sensor assembly 200 onto the second housing part 9. Specifically, the second housing part 9 is provided with a first buckle 9-5 and a second buckle 9-6. Fix the structure in Figure 3A onto the second housing part 9 using the first buckle 9-5 and the second buckle 9-6. Specifically, fix the fixing bracket 10 onto the second housing part 9 using the first buckle 9-5 and the second buckle 9-6. Then fix the sensor transmission line 13 onto the sensor connection terminal 11-1 of the sensor 11, forming the structure shown in Figure 16A.

[0238] Figure 17A is a schematic diagram of another part of the structure of the blood pressure measuring device in some embodiments of this disclosure. Figure 17B is a schematic diagram of another part of the structure of the blood pressure measuring device in some embodiments of this disclosure.

[0239] Step 6: As shown in Figure 17A, fix the cover plate 1 to the first housing part 3 with sealant, and attach the first ECG electrode 2 to the side of the first housing part 3 where the second opening 3-7 is provided to obtain the structure shown in Figure 1A.

[0240] Specifically, as shown in Figure 17B, the surface of the first housing portion 3 away from the second housing portion 9 is provided with a third sealing groove 3-10 corresponding to the cover plate 1 and a second sealing groove 3-11 corresponding to the first ECG electrode 2. Specifically, the second sealing groove 3-11 is provided on the surface of the first portion 301 facing the first ECG electrode 2, and the third sealing groove 3-10 is provided on the surface of the second portion 302 facing the cover plate 1. Sealant is applied to the third sealing groove 3-10, and the cover plate 1 is adhered to the sealant within the third sealing groove 3-10. After the sealant solidifies, it forms a first seal, preventing liquid from crossing the cover plate 1 and entering the receiving space. Simultaneously, sealant is applied to the second sealing groove 3-11, and the first ECG electrode 2 is adhered to the sealant within the second sealing groove 3-11. After the sealant solidifies, it forms a third seal, preventing liquid from crossing the first ECG electrode 2 and entering the receiving space.

[0241] Step 7: As shown in Figure 6, fix the elastic element 5 to the first mounting post 61 and the second mounting post 62, and then press it into the first housing part 3 along the first mounting groove 3-1. Through the cooperation of the protrusion 6-1 and the sliding groove 3-2, ensure that the buckle assembly 6 will not be completely pushed out of the mounting groove 3-1 by the elastic element 5. The elastic element 5 can be, for example, a spring.

[0242] Step 8: As shown in Figures 4A and 4B, securely connect the rechargeable battery 7 and the display screen 25 to the digital circuit board 18. As shown in Figure 4A, connect and install the second connector 20 onto the first connector 18-2.

[0243] Figure 18A is a schematic diagram of another part of the structure of the blood pressure measuring device in some embodiments of this disclosure. Figure 18B is a schematic diagram of another part of the structure of the blood pressure measuring device in some embodiments of this disclosure.

[0244] Step 9: As shown in Figure 18A, place the power button 19 into the power button hole 3-3, then fix the display screen 25 on the digital circuit board 18 into the second mounting slot 3-4 of the first housing part 3, and then, as shown in Figure 18B, fix the digital circuit board 18 onto the first housing part 3. Specifically, for example, it can be fixed by two screw posts 3-5.

[0245] Step 10: As shown in Figure 5, fix the second connecting part 8-1 and the second connecting piece 20 of the analog circuit board 8, and then fix the analog circuit board 8 with the fixing screw 17. The first housing assembly is completed.

[0246] Step 11: As shown in Figure 12, combine the structures shown in Figure 5 and Figure 14 to form a complete blood pressure measuring device. Specifically, a transmission line connection terminal 8-2 is provided on the side of the analog circuit board 8 near the sensor 11. Connect the sensor transmission line 13 to the transmission line connection terminal 8-2 on the analog circuit board 8. Also, as shown in Figure 5, a fifth sealing groove 3-6 is provided on the edge of the first housing part 3. As shown in Figure 12 or Figure 16A, a sixth sealing groove 9-7 is provided on the edge of the second housing part 9. The fifth sealing groove 3-6 and the sixth sealing groove 9-7 are arranged opposite to each other. Apply sealant to at least one of the fifth sealing groove 3-6 and the sixth sealing groove 9-7. After the sealant solidifies, the first housing part 3 and the second housing part 9 are bonded and fixed together, thus forming a complete blood pressure measuring device. Simultaneously, the first housing part 3 and the second housing part 9 can also be sealed with sealant to prevent liquid from entering the containing space.

[0247] The steps in this embodiment are for the purpose of further understanding the structure of the blood pressure measuring device in this embodiment and are not intended to limit the assembly order. The actual assembly order can be selected according to the actual situation.

[0248] In addition, as shown in Figure 8A, the wristband 21 and the wristband buckle 4 are connected. The wristband buckle 4 can be combined and fixed together with the first housing part 3 and the mounting buckle 6, which facilitates the carrying of the blood pressure measuring device.

[0249] Figure 19 is a schematic diagram of the blood pressure measuring device in some other embodiments of the present disclosure. In particular, Figure 19(a) is a planar structural schematic diagram of the blood pressure measuring device in some other embodiments of the present disclosure, and Figure 19(b) is a three-dimensional structural schematic diagram of the blood pressure measuring device in some other embodiments of the present disclosure.

[0250] In this disclosure, the position, shape, and number of each opening in the shell can be set according to actual needs, and this disclosure does not impose any limitations.

[0251] For example, in the embodiment shown in Figure 19, there are two third openings 9-9 corresponding to the same second ECG electrode 14. In the embodiment shown in Figure 10, the third opening 9-9 corresponding to the same second ECG electrode is an elongated hole or a rounded rectangle. Different settings of the opening shape and position in the embodiments of this disclosure can meet the needs of different scenarios. Regarding the shape of other openings, it is similar to the above, and this disclosure will not repeat it.

[0252] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of this disclosure, and this disclosure is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and substance of this disclosure, and these modifications and improvements are also considered to be within the scope of protection of this disclosure.

Claims

1. A blood pressure measuring device, characterized by, include: A housing, the interior of which has a receiving space; The signal processor is located in the accommodating space; Multiple electrocardiogram (ECG) electrodes, at least a portion of which are located outside the housing, are used to collect ECG signals from different parts of the human body; A pulse sensor assembly, at least a portion of which is located outside the housing, the pulse sensor assembly being used to acquire pulse signals from a human body; The electrocardiogram (ECG) electrodes and the pulse sensor assembly are electrically connected to the signal processor, which is configured to determine the blood pressure value based on the pulse signal and the ECG signal.

2. The blood pressure measuring device according to claim 1, characterized in that, The housing has a first opening corresponding to the pulse sensor assembly; The pulse sensor assembly includes: A fixing frame is disposed in the receiving space and connected to the housing, and the fixing frame has a first receiving hole; A sensor, mounted on the mounting bracket, passes through the first opening for acquiring the pulse signal, and at least a portion of the sensor is located outside the housing; A first connector is disposed in the receiving space, the first connector passes through the first receiving hole, and both ends of the first connector are electrically connected to the sensor and the signal processor, respectively.

3. The blood pressure measuring device according to claim 2, characterized in that The sensor includes: The base is detachably connected to the mounting bracket; A sensing element for collecting the pulse signal is disposed on the side of the base away from the fixing frame and is electrically connected to the first connector.

4. The blood pressure measurement device of claim 2, wherein, The pulse sensor assembly also includes a protective film disposed on the side of the sensor away from the mounting bracket.

5. The blood pressure measuring device according to claim 4, characterized in that, The inner wall of the housing is provided with multiple positioning posts; The fixing frame is provided with a first positioning hole, which corresponds to the positioning post. The pulse sensor assembly also includes a protective film mounting part that is fixedly connected to the edge of the protective film, and the protective film mounting part is provided with a second positioning hole; The positioning post passes through the second positioning hole and the first positioning hole, the protective film mounting part is located between the fixing frame and the housing, and the protective film passes through the first opening; The housing is also provided with a first buckle and a second buckle, which are used to fix the fixing frame to the housing.

6. The blood pressure measuring device according to any one of claims 1 to 5, characterized in that, The signal processor includes: an analog circuit board and a digital circuit board; The analog circuit board is electrically connected to the electrocardiogram electrodes and the pulse sensor assembly. The analog circuit board is configured to receive and process the electrocardiogram signal and the pulse signal, and transmit the processed signal to the digital circuit board. The digital circuit board is configured to determine the blood pressure value based on the processed signal.

7. The blood pressure measuring device according to claim 6, characterized in that The plurality of electrocardiogram electrodes includes a first electrocardiogram electrode and a second electrocardiogram electrode; The housing has a second opening corresponding to the first electrocardiogram electrode and a third opening corresponding to the second electrocardiogram electrode; The analog circuit board has a first connecting electrode on the side near the first ECG electrode. The first connecting electrode passes through the second opening and is electrically connected to the first ECG electrode, and the first ECG electrode is electrically connected to the analog circuit board. A second connecting electrode is provided on the side of the analog circuit board near the second ECG electrode. The second connecting electrode passes through the third opening and is electrically connected to the second ECG electrode, for transmitting the second ECG signal collected by the second ECG electrode to the analog circuit board.

8. The blood pressure measuring device according to any one of claims 1 to 5, characterized in that, The plurality of electrocardiogram electrodes includes a first electrocardiogram electrode and a second electrocardiogram electrode; The housing has a first opening corresponding to the pulse sensor assembly, a second opening corresponding to the first electrocardiogram electrode, and a third opening corresponding to the second electrocardiogram electrode; The housing includes a first housing portion and a second housing portion disposed opposite to and connected to each other, the first housing portion and the second housing portion defining the receiving space; The first opening is formed on the first housing portion, and the second and third openings are formed on the second housing portion.

9. The blood pressure measuring device according to claim 8, characterized in that, The first housing portion includes a support plate and a frame surrounding the support plate; The blood pressure measuring device also includes a wristband mounting part and a buckle assembly, wherein the wristband mounting part is detachably connected to the frame via the buckle assembly.

10. The blood pressure measuring device according to claim 9, characterized in that, The wristband mounting part includes: a mounting body and a hook disposed on the mounting body; The frame has a mounting groove, and the second housing has a mounting hole opposite to the frame. The buckle assembly can pass through the mounting hole and extend into the mounting groove. The mounting groove has a locking hole on its side wall, through which the hook can be detachably connected to the buckle assembly.

11. The blood pressure measuring device according to claim 10, characterized in that, The side wall of the mounting groove is also provided with a sliding groove, and the buckle assembly includes: a first mounting post, a second mounting post, a force-applying part, and a limiting part; The two ends of the force-applying part are respectively connected to the first mounting post and the second mounting post, and the first mounting post and the second mounting post can pass through the mounting hole and extend into the mounting groove; The two ends of the limiting part are respectively connected to the first mounting post and the second mounting post, and there is a gap between the limiting part and the force-applying part; The force-applying part is provided with a protrusion that can extend into the sliding groove; Both the first mounting post and the second mounting post are fitted with elastic elements. When at least a portion of the first mounting post and at least a portion of the second mounting post are located in the mounting groove and the force-applying part is not subjected to external force, the elastic element is in a compressed state, and the hook can engage with the limiting part. When the force-applying part is pressed along the depth direction of the mounting groove, the limiting element can separate from the hook.

12. The blood pressure measurement device of claim 9, wherein, The blood pressure measuring device also includes a wristband that is detachably connected to the wristband mounting portion.

13. The blood pressure measuring device according to any one of claims 1 to 5, characterized in that, The housing is also provided with a light-transmitting window; The blood pressure measuring device also includes: A display screen is disposed in the receiving space, and the display area of ​​the display screen is disposed opposite to the light-transmitting window; A cover plate is located on the side of the housing away from the display screen, the cover plate covers the light-transmitting window, and a first sealing element is provided between the housing and the cover plate surrounding the light-transmitting window.

14. The blood pressure measuring device according to any one of claims 1 to 5, characterized in that, The housing is provided with a charging port; The blood pressure measuring device also includes: A rechargeable battery is disposed in the receiving space and is electrically connected to the signal processor; A charging component is disposed in the receiving space and electrically connected to the signal processor. The charging end of the charging component is exposed by the charging port. The charging component is used to receive electrical signals provided by an external power source and transmit the electrical signals to the signal processor. The signal processor is further configured to perform voltage conversion on the electrical signal and transmit the converted electrical signal to the rechargeable battery.

15. The blood pressure measuring device according to claim 14, characterized in that, The charging assembly includes at least two charging springs, one end of which is exposed by the charging port, and the other end of which is electrically connected to the signal processor, and the charging springs are in a compressed state. A second sealing element is provided on the inner wall of the housing, which surrounds the charging spring needle and is used to seal the gap between the charging spring needle and the housing.

16. The blood pressure measurement device of claim 15, wherein, The charging assembly also includes a magnet located between two adjacent charging pins.

17. The blood pressure measuring device according to any one of claims 1 to 5, characterized in that, The housing includes a first housing portion and a second housing portion that are disposed opposite to each other and detachably connected, the first housing portion and the second housing portion defining the receiving space; The first housing portion includes a first part and a second part connected to the first part; the second housing portion includes a third part opposite to the first part and a fourth part opposite to the second part; the thickness direction of the first part and the thickness direction of the second part intersect, and the thickness direction of the third part and the thickness direction of the fourth part intersect. The plurality of electrocardiogram electrodes includes a first electrocardiogram electrode and a second electrocardiogram electrode; The first electrocardiogram electrode is disposed opposite to the first part, the second electrocardiogram electrode is disposed opposite to the third part, and the pulse sensor assembly is disposed opposite to the fourth part.

18. The blood pressure measuring device according to any one of claims 1 to 5, characterized in that, At least one of the ECG electrodes has a plurality of conductive protrusions on the surface away from the housing.

19. The blood pressure measuring device according to any one of claims 1 to 5, characterized in that, The housing also has a power button hole. The blood pressure measuring device also includes a power button, which includes a flexible button part and a rigid button part. A portion of the flexible button part is connected to the inner side of the housing, and the rigid button part is connected to another portion of the flexible button part and passes through the power button hole.

20. The blood pressure measurement device of claim 19, wherein, The flexible button section has a through hole opposite to the power button hole; The rigid button portion includes a first sub-part, a second sub-part, and a third sub-part connected in sequence. The second sub-part is located inside the through hole, and the first and third sub-parts are located on opposite sides of the through hole in its extension direction. The size of the first sub-part and the size of the third sub-part are both larger than the diameter of the through hole.

21. The blood pressure measuring device according to any one of claims 1 to 5, characterized in that, The plurality of electrocardiogram electrodes includes a first electrocardiogram electrode and a second electrocardiogram electrode; The housing has a second opening corresponding to the first ECG electrode, and a third sealing element is provided between the housing and the first ECG electrode, surrounding the second opening; The housing has a third opening corresponding to the second ECG electrode, and a fourth sealing element is provided between the housing and the second ECG electrode, surrounding the third opening.

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