Electronic devices for measuring blood pressure

Abstract

The present application provides an electronic device for measuring blood pressure. The electronic device for measuring blood pressure of the present application comprises a measuring assembly, an airbag and a fluid pipeline; the fluid pump and the pressure sensor in the measuring assembly are connected to the airbag through a first fluid pipeline and a second fluid pipeline respectively, the first pipe opening of the first fluid pipeline and the second pipe opening of the second fluid pipeline are located on the same side of the airbag, and the opening direction of one of the first pipe opening and the second pipe opening is away from the other, so that the first pipe opening and the second pipe opening are far away from each other. In this way, the interference of the airbag airflow on the pressure sensor is reduced, and the measurement accuracy of blood pressure is improved.

Description

Technical Field

[0001] The present application relates to the field of electronic equipment, and in particular to an electronic equipment for measuring blood pressure. Background Art

[0002] As modern people pay more attention to health, more and more wearable devices or other electronic devices are integrated with blood pressure measurement functions to monitor human blood pressure and other physiological indicators anytime and anywhere.

[0003] At present, devices with blood pressure measurement functions generally measure by oscillometric method. Specifically, the oscillometric method uses an airbag to compress the subject's artery, and the blood pressure in the subject's artery will impact the airbag, causing the air pressure inside the airbag to produce pressure fluctuations. After obtaining the fluctuation of the air pressure inside the airbag, the blood pressure of the subject and other indicators can be calculated. For example, in an existing terminal device, it specifically includes components such as an airbag, a fluid pump for inflation, and a sensor for measuring the pressure inside the airbag. Among them, the fluid pump and the pressure sensor are connected to the airbag through the corresponding airflow channels, respectively, and the air supply port corresponding to the fluid pump and the air inlet port corresponding to the sensor are generally arranged in parallel, so as to respectively realize the functions of supplying air to the airbag and allowing the airflow in the airbag to flow to the sensor.

[0004] However, since the size of wearable devices is generally compact, the distance between the ports of each airflow channel is small. During the measurement process, the fluid pump may generate air flow shock when supplying air to the airbag, thereby interfering with the measurement of the sensor and affecting the measurement accuracy. Summary of the invention

[0005] The present application provides an electronic device for measuring blood pressure, which has good blood pressure measurement accuracy.

[0006] The present application provides an electronic device for measuring blood pressure, comprising a measuring component, an airbag and a fluid pipeline connected between the measuring component and the airbag; the measuring component comprises a fluid pump and a pressure sensor, the fluid pump is connected to the airbag through a first fluid pipeline, the pressure sensor is connected to the airbag through a second fluid pipeline, the first fluid pipeline has a first pipe opening connected to the airbag, the second fluid pipeline has a second pipe opening connected to the airbag, the first pipe opening and the second pipe opening are located on the same side of the airbag, and the opening direction of one of the first pipe opening and the second pipe opening is away from the other, so that the first pipe opening and the second pipe opening are away from each other. In this way, when the fluid pump in the electronic device for measuring blood pressure provides fluid to the inside of the airbag, the fluid from the fluid pump will flow in a direction away from the pipe opening of the pressure sensor, and there is a certain distance between the pipe opening of the fluid pump and the pipe opening of the pressure sensor, so the pipe opening of the pressure sensor will not be directly impacted by the fluid, and the impact and influence received are small, which can avoid the impact of the fluid impact on the detection of the pressure sensor, and has good blood pressure measurement accuracy.

[0007] As an optional embodiment, one of the first fluid pipeline and the second fluid pipeline forms an outer tube section, and the other forms an inner tube section, the outer tube section is sleeved on the outer side of the inner tube section, and there is a gap between the outer wall of the inner tube section and the inner wall of the outer tube section. The space occupied by the part where the fluid pipeline is connected to the airbag is small, which can make the airbag and the entire electronic device for measuring blood pressure have a more compact structure, which is conducive to the miniaturization and portability of the electronic device for measuring blood pressure.

[0008] As an optional embodiment, at least one of the first fluid pipeline and the second fluid pipeline has an internal pipe section extending into the interior of the airbag, so that at least one of the first pipe opening and the second pipe opening is located inside the airbag. In this way, the internal pipe section extends into the interior of the airbag, and a large distance can be provided between the two pipe openings. Only the direction of the first pipe opening or the second pipe opening extending into the interior of the airbag is controlled to keep the two pipe openings away from each other, and the structure of the fluid pipeline is relatively simple.

[0009] As an optional embodiment, one of the first and second pipe openings extends into the airbag and is suspended, and the other is flush with the inner wall of the airbag. In this way, when the space inside the airbag is limited, one of the pipe openings is arranged flush with the inner wall of the airbag, so that the second pipe opening and the first pipe opening are as far apart as possible, which helps to reduce the impact of the airflow from the first pipe opening on the second pipe opening.

[0010] As an optional embodiment, the built-in pipe section includes a bending section, and the pipe section before the bending section and the pipe section after the bending section of the built-in pipe section have an angle. In this way, on the one hand, when the airflow of the fluid pump rushes out from the first pipe opening, it will not directly impact the second pipe opening; on the other hand, because the first fluid pipeline has an extension section, there will be a certain distance between the first pipe opening and the second pipe opening. In this way, it can be ensured that the second pipe opening can achieve a relatively stable air intake, so that the pressure sensor is less disturbed when performing detection.

[0011] As an optional embodiment, the pipe section between the bent sections and the pipe section after the bent section of the built-in pipe section are perpendicular to each other. In this way, the airflow velocity in the first fluid pipeline is reduced, reducing the influence of the first pipe opening on the second pipe opening.

[0012] As an optional implementation, the built-in pipe section is located in the first fluid pipeline, and the second fluid pipeline extends to a position flush with the inner wall of the airbag.

[0013] As an optional embodiment, the built-in tube segment is a soft tube segment, and the built-in tube segment fits the inner wall of the airbag. In this way, the built-in tube segment can move and deform accordingly with the expansion or contraction of the airbag, and will not be separated from the inner wall of the airbag. In addition, the first fluid pipeline can expand or collapse accordingly with the deformation of the airbag, and will not form a hard protrusion inside the airbag, so that the subject is more comfortable to wear.

[0014] As an optional embodiment, the built-in pipe segment is a hard pipe segment; the built-in pipe segment is suspended inside the airbag, and there is a distance between the first pipe opening and the inner wall of the airbag. This allows the built-in pipe segment to have a certain rigidity, and after extending into the inner wall of the airbag, it can maintain this shape and keep a relatively certain distance from the inner wall of the airbag; it will not bend or collapse and adhere to the inner wall of the airbag.

[0015] As an optional implementation, each pipe section of the first fluid pipeline is an integrated structure, so that the entire first fluid pipeline can be uniformly manufactured and formed, reducing the difficulty of assembly and manufacturing.

[0016] As an optional implementation, the built-in pipe section is located in the second fluid pipeline, and the first fluid pipeline extends to a position flush with the inner wall of the airbag.

[0017] As an optional embodiment, the built-in pipe section is suspended inside the airbag, and there is a gap between the second pipe opening and the inner wall of the airbag; or the built-in pipe section fits the inner wall of the airbag. In this way, similar to the first fluid pipeline, the built-in pipe section of the second fluid pipeline can extend to different positions inside the airbag.

[0018] As an optional implementation, when the electronic device for measuring blood pressure is worn on the human body, the position of the second nozzle inside the airbag corresponds to the position of the human artery. Since the artery is close to the second nozzle, the air pressure change at the second nozzle responds to the blood impact in the artery more promptly, and the pressure sensor detects more quickly and directly; at the same time, the air pressure change at the second nozzle is less affected by other parts of the airbag, which improves the accuracy of the detection. In this way, the second nozzle can collect the airbag pressure changes close to the artery, so that the pressure sensor detection has a faster response speed and higher accuracy.

[0019] As an optional embodiment, the built-in pipe section is a hard pipe section. In this way, even if the airbag compresses the second fluid pipeline due to the reduction of the internal space, the built-in pipe section of the second fluid pipeline will maintain its original shape and cross-sectional area, thereby maintaining the normal flow of gas in the second fluid pipeline and preventing the airbag from collapsing and hindering the normal detection of the pressure sensor.

[0020] As an optional implementation, each pipe section of the second fluid pipeline is an integrated structure, so that the second fluid pipeline can be uniformly manufactured and formed, reducing the difficulty of assembly and manufacturing.

[0021] As an optional embodiment, the electronic device for measuring blood pressure further includes a fluid valve and a third fluid pipeline, wherein a first end of the third fluid pipeline is connected to the fluid valve, and a second end is used to be connected to the airbag. The inflated airbag can be deflated through the fluid valve, and the pressure sensor can detect the change in the airbag pressure during deflation, thereby obtaining a blood pressure measurement value.

[0022] As an optional implementation, the second end of the third fluid pipeline is connected to the first fluid pipeline. In this way, the space occupied by the fluid pipeline and the airbag at the connection point is small, which can effectively utilize the relatively limited surface space of the airbag, and is conducive to the miniaturization and compactness of the airbag and the entire electronic device for measuring blood pressure; at the same time, the airflow in the third fluid pipeline will not interfere with the second fluid pipeline, so the impact on the detection of the pressure sensor is also small.

[0023] As an optional embodiment, at least part of the first fluid pipeline is a collapsible soft pipeline, and the second end of the third fluid pipeline is connected to the second fluid pipeline. In this way, even if the first fluid pipeline collapses due to pressure changes when the fluid pump is not working, the third fluid pipeline can still be ventilated normally to ensure the deflation operation.

[0024] As an optional implementation, the electronic device for measuring blood pressure also includes a main body and a wristband, wherein the wristband is connected to the main body, the measuring component is arranged inside the shell of the main body, and the airbag is arranged on the wristband. In this way, the electronic device for measuring blood pressure can be worn on the wrist, upper arm or other limbs of the wearer through the wristband, so as to measure the wearer's blood pressure.

[0025] The electronic device for measuring blood pressure specifically comprises an airbag and a measuring component, wherein the measuring component comprises a processing unit, a fluid pump and a pressure sensor, wherein the fluid pump and the sensor are both electrically connected to the processing unit; and the fluid pipeline comprises a first fluid pipeline connected between the fluid pump and the airbag, and a second fluid pipeline connected between the pressure sensor and the airbag. The first fluid pipeline has a first pipe opening connected to the airbag, and the second fluid pipeline has a second pipe opening connected to the airbag, and the opening direction of one of the first pipe opening and the second pipe opening will deviate from the other, so that the first pipe opening and the second pipe opening are far away from each other. In this way, when the fluid pump in the electronic device for measuring blood pressure provides fluid to the inside of the airbag, the fluid rushed out of the first pipe opening will flow in a direction away from the second pipe opening, and there is a certain distance between the first pipe opening and the second pipe opening, so the second pipe opening will not be directly impacted by the fluid, and the impact and influence received are small, which can avoid the impact of the fluid impact on the detection of the pressure sensor, and has good blood pressure measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic diagram of the appearance of an electronic device for measuring blood pressure provided in an embodiment of the present application when the electronic device is a wearable device;

[0027] Figure 2 yes Figure 1 Schematic diagram of the position of the electronic device for measuring blood pressure worn on the human wrist;

[0028] Figure 3a yes Figure 1 A schematic diagram of the internal structure of an electronic device for measuring blood pressure;

[0029] Figure 3b yes Figure 1 Another schematic diagram of the internal structure of an electronic device for measuring blood pressure;

[0030] Figure 4 yes Figure 1 A block diagram of the internal structure of a measuring component in an electronic device for measuring blood pressure;

[0031] Figure 5a yes Figure 1 A side view of the electronic device for measuring blood pressure when not measuring blood pressure;

[0032] Figure 5b yes Figure 1 A side view of the electronic device for measuring blood pressure in a blood pressure measuring state;

[0033] Figure 6a It is a schematic diagram of the change of the air bag pressure when the electronic device measuring blood pressure is measuring;

[0034] Figure 6b It is a waveform diagram of the air bag pressure pulse wave formed by the electronic device for measuring blood pressure during measurement;

[0035] Figure 6c It is a schematic diagram of the envelope curve of the pressure pulse wave obtained by the electronic device measuring blood pressure during measurement;

[0036] Figure 7 is a schematic diagram of the structure of an electronic device for measuring blood pressure provided in an embodiment of the present application;

[0037] Figure 8 yes Figure 7 Schematic diagram of the flow state of the fluid in the fluid passage;

[0038] Fig. 9 yes Figure 7 A schematic diagram of the specific structure of the connection area between the fluid pipeline and the air bag in the electronic device for measuring blood pressure;

[0039] Fig.10 yes Figure 7 A schematic diagram of a nested structure of a first fluid pipeline and a second fluid pipeline;

[0040] Fig.11 yes Figure 7 A schematic diagram of the relative positions between a first nozzle and a second nozzle in an electronic device for measuring blood pressure;

[0041] Fig.12 is a schematic structural diagram of another electronic device for measuring blood pressure provided in an embodiment of the present application;

[0042] Fig.13 yes Fig.12 A schematic diagram of the specific structure of the connection area between the fluid pipeline and the air bag in the electronic device for measuring blood pressure;

[0043] Fig.14 is a schematic structural diagram of a third electronic device for measuring blood pressure provided in an embodiment of the present application;

[0044] Fig.15 yes Fig.14 Schematic diagram of the flow state of the fluid in the fluid passage;

[0045] Fig.16 yes Fig.14 A schematic diagram of the specific structure of the connection area between the fluid pipeline and the air bag in the electronic device for measuring blood pressure;

[0046] Fig.17 yes Fig.14 A schematic diagram of the position of the second nozzle of the electronic device for measuring blood pressure during measurement;

[0047] Fig.18 is a schematic structural diagram of a fourth electronic device for measuring blood pressure provided in an embodiment of the present application;

[0048] Fig.19 yes Fig.18 A schematic diagram of the specific structure of the connection area between the fluid pipeline and the air bag of the electronic device for measuring blood pressure.

[0049] Description of reference numerals:

[0050] 1-airbag; 2-measuring component; 3-first fluid pipeline; 4-second fluid pipeline; 5-third fluid pipeline;

[0051] 11-first inner wall; 12, 13-adhesive; 20-processing unit; 21-fluid pump; 22-pressure sensor; 23-fluid valve; 30-fluid pipeline; 31-first pipe section; 32-second pipe section; 41-second bending section; 42-third pipe section; 43-fourth pipe section;

[0052] 110-RF circuit; 111-antenna; 120-memory; 130-other input devices; 140-screen; 141-display panel; 142-touch panel; 150-other sensors; 160-audio circuit; 170-I / O subsystem; 171-other input device controller; 172-sensor controller; 173-display controller; 201-housing; 301-first nozzle; 321-first extension section; 322-second extension section; 323-first bending section; 401-second nozzle; 431-third extension section; 432-fourth extension section; 433-third bending section; 501-main body; 502-wristband; 503-wrist;

[0053] 100, 200, 300, 400 - electronic devices for measuring blood pressure;

[0054] c-radial artery. DETAILED DESCRIPTION

[0055] Before describing the embodiments of the present application, in order to facilitate understanding of the technical solution of the present application, the basic concepts and terms involved in the embodiments of the present application are first explained:

[0056] Blood pressure (BP): refers to the lateral pressure on the side wall of a blood vessel per unit area when the blood pressure flows inside the blood vessel. Blood pressure is the main driving force for blood flow. The human body's blood pressure needs to be kept within a normal fluctuation range. Too high or too low will have an adverse effect on human health. Due to the differences in blood vessels, blood pressure is called arterial blood pressure, venous blood pressure, and capillary blood pressure. The blood pressure measured in general is arterial blood pressure.

[0057] Oscillometric blood pressure measurement: The vibration caused by the blood colliding with the blood vessel wall when flowing is used to obtain the pulsation envelope originating from the blood vessel wall, and the blood pressure value is obtained through the relationship between the pulsation envelope and the arterial blood pressure. The oscillometric method can specifically include the amplitude coefficient method and the waveform characteristic method. When measuring, an air bag is tied to a person's limbs and pressurized inside the air bag to detect the vibration or pressure generated by the impact of blood in the human body under the pressure of the air bag.

[0058] At present, as people pay more and more attention to health, they pay more and more attention to the measurement of human indicators such as blood pressure. In order to measure blood pressure anytime and anywhere, electronic sphygmomanometers or other electronic devices with blood pressure measurement functions have been widely used. Among them, in order to take into account the portability of the equipment and the accuracy of the measurement, electronic sphygmomanometers or electronic devices with blood pressure measurement functions often use the oscillometric method to measure blood pressure. For the convenience of description below, electronic sphygmomanometers and electronic devices with blood pressure measurement functions are collectively referred to as electronic devices for measuring blood pressure. It can be understood that electronic devices for measuring blood pressure include but are not limited to electronic sphygmomanometers, mobile phones, or smart wearable devices.

[0059] The following description takes the electronic device for measuring blood pressure as a wearable device as an example. Figure 1 This is a schematic diagram of the appearance of an electronic device for measuring blood pressure provided in an embodiment of the present application when it is a wearable device. Figure 2 yes Figure 1 Schematic diagram of the position of the electronic device for measuring blood pressure worn on the human wrist. Figure 1 and Figure 2 As shown, when the electronic device 100 for measuring blood pressure is a wearable device, it has components such as a main body 20 and a wristband 10; the main body 20 can be worn on the wrist, upper arm or other body parts of the wearer through the wristband 10. At this time, the electronic device for measuring blood pressure can perform the blood pressure measurement function and other common functions of wearable devices.

[0060] Figure 3a yes Figure 1 Schematic diagram of the internal structure of an electronic device for measuring blood pressure. Figure 3b yes Figure 1 Another schematic diagram of the internal structure of an electronic device for measuring blood pressure. Figure 3a and Figure 3b As shown, in order to measure blood pressure by oscillometric method, the interior of the electronic device 100 for measuring blood pressure may generally include components such as an airbag 1, a measuring component 2, and a fluid passage 30 connected between the airbag 1 and the measuring component 2. Figure 3a In the electronic device 100 for measuring blood pressure, the airbag 1 extends all the way to the bottom of the housing 201 in the electronic device 100 for measuring blood pressure, and the fluid passage 30 is connected to the airbag 1 from the bottom of the housing 201; and Figure 3b In the electronic device 100 for measuring blood pressure, the airbag 1 only extends to the side of the housing 201 , and the fluid passage 30 is connected to the airbag 1 from the side of the housing 201 .

[0061] Among them, the airbag 1 is the component of the electronic device 100 for measuring blood pressure that directly acts on the human body. The airbag 1 can have a variety of different structures and forms, for example, it can be attached to a cuff or a wristband 10. At this time, the airbag 1 can be wrapped around and tied to the subject's limbs, such as tied to the subject's upper arm or wrist. The airbag 1 is mainly composed of soft materials, so when the inside of the airbag 1 is inflated, the size of the airbag 1 will change, and the outer wall of the airbag 1 will exert pressure on the subject's limbs. Depending on the type of electronic device, the airbag 1 can be an independent structure, or it can be attached to other structures of the electronic device for measuring blood pressure. For example, when the electronic device for measuring blood pressure is a smart watch or a smart bracelet, the airbag 1 can be correspondingly set on the wristband of the smart watch, or on the ring body of the smart bracelet. Exemplary, such as Figure 1 and Figure 2 The airbag 1 shown can be arranged on the inner side of the wristband 10, that is, the side of the wristband 10 that contacts the user's limbs.

[0062] The measuring component 2 is the main functional element inside the electronic device 100 for measuring blood pressure, and can be specifically located inside the main body 20 in the wearable device, for example, it is contained in the housing 201 of the main body 20. The measuring component 2 may include various components such as a processing unit 20, a fluid pump 21, a pressure sensor 22, and a fluid valve 23. Among them, the processing unit 20 may be a component with control and data processing functions, and various interfaces and lines are used to connect various parts of the entire electronic device 100 for measuring blood pressure, perform various functions of the electronic device 100 for measuring blood pressure and process data, so as to monitor the work of the electronic device 100 for measuring blood pressure as a whole. Exemplarily, the processing unit 20 may be a central processing unit (CPU), a graphics processing unit (GPU), a field programmable gate array (FPGA), or a microcontroller unit (MCU). Optionally, the processing unit 20 may be an independent module, or it may be integrated with other components or control circuits of the electronic device for measuring blood pressure. The fluid pump 21, the fluid valve 23 and the pressure sensor 22 are all electrically connected to the processing unit 20 in the measuring assembly 2, so that the processing unit 20 can control the actions of the fluid pump 1 and the fluid valve 23, and receive the pressure signal detected by the pressure sensor 22. In order to receive the control signal of the processing unit, the fluid pump 21 and the fluid valve 23 are both electronically controlled components and are electrically connected to the processing unit 20.

[0063] As an optional method, the fluid pump 21 may include components such as a motor 211 and a pump body 212, wherein the pump body 212 may drive the fluid forward through a piston or an impeller, and the motor 211 and the processing unit 20 may be electrically connected. In addition, in this scenario, the fluid valve 23 may be a solenoid valve, and the pressure sensor 22 may be a piezoresistive pressure sensor, etc. Therefore, the motor 211, the pressure sensor 22, and the fluid valve 23 may all be electrically connected to the processing unit 20, and signal transmission and control may be achieved.

[0064] In order to connect the fluid pump 21, the pressure sensor 22 and the fluid valve 23 with the airbag 1, a fluid passage 30 is provided between the measuring component 2 and the airbag 1, and the fluid passage 30 can be formed by a hard or soft sealed pipe. Among them, the fluid flowing through the fluid passage 30 and the airbag 1 can generally be gas. In order to connect different components in the measuring component 2, the fluid passage 30 can include an air supply passage connected between the airbag 1 and the fluid pump 21, an air discharge passage connected between the airbag 1 and the fluid valve 23, and a detection passage connected between the airbag 1 and the pressure sensor 22. Since the fluid pump 21, the pressure sensor 22 and the fluid valve 23 in the measuring component 2 need to be connected to the airbag 1 respectively, correspondingly, the fluid passage 30 can also have multiple passages, and different gas passages can connect different components. It should be noted that the fluid passage in Figure 3 only shows the overall connection state between the various components in the measuring component 2 and the airbag 1, and the specific shape and implementation form of the fluid passage can refer to the description in the specific scene below.

[0065] It is understandable that the fluid passage 30 can be combined with other components in the electronic device 100 for measuring blood pressure. For example, a connecting component can be provided between the airbag 1 and the measuring component 2, and the fluid passage 30 can be opened inside the connecting component.

[0066] It is understandable that the electronic device for measuring blood pressure may have other functions besides performing the blood pressure measurement operation. Accordingly, the electronic device for measuring blood pressure may include other components or structures, which may be partially or completely arranged on the measuring component 2.

[0067] The following takes the electronic device for measuring blood pressure as a wearable device as an example to explain other possible internal structures of the electronic device for measuring blood pressure. Figure 4 yes Figure 1 The internal structure block diagram of the measuring component in the electronic device for measuring blood pressure. Figure 4As shown, in order to realize various functions and operations of the wearable device, in addition to the above-mentioned processing unit 20, fluid pump 21, pressure sensor 22 and other components, the measurement component of the wearable device may also include a radio frequency (RF) unit 110, a memory 120, other input devices 130, a screen 140, other sensors 150, an audio circuit 160, an I / O subsystem 170, and a power supply 180 and other components. Those skilled in the art will understand that Figure 4 The wearable device structure shown in the figure does not constitute a limitation on the wearable device, and may include more or fewer components than shown in the figure, or combine some components, or separate some components, or arrange the components differently.

[0068] To facilitate understanding of the overall structure of the measurement component 2, the following specifically introduces the various components of the measurement component 2 in conjunction with FIG. 3 :

[0069] The RF unit 110 can be used to receive and send signals during information transmission or calls. In particular, after receiving the downlink information of the base station, it is sent to the processor 180 for processing; in addition, the designed uplink data is sent to the base station. Usually, the RF unit 110 is connected to the antenna 111, so as to communicate with the network and other devices using the antenna 111. The RF unit 111 includes but is not limited to at least one amplifier, a transceiver, a coupler, a low noise amplifier (LNA), a duplexer, etc.

[0070] The memory 120 can be used to store software programs and modules. The processing unit 20 executes various functional applications and data processing of the wearable device by running the software programs and modules stored in the memory 120. The memory 120 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; the data storage area may store data created according to the use of the wearable device (such as audio data, a phone book, etc.), etc. In addition, the memory 120 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other volatile solid-state storage devices.

[0071] In order to enable the wearable device to perform interactive operations such as display and input. The wearable device includes other input devices 130, screen 140, other sensors 150, audio circuit 160, etc. Among them, other input devices 130 can be used to receive input digital or character information, and generate key signal input related to user settings and function control of mobile terminal 100. Other input devices 130 are connected to other input device controllers 171 of I / O subsystem 170, and perform signal interaction with processing unit 20 under the control of other device input controller 171. Screen 140 can be used to display information input by the user or information provided to the user and various menus of the wearable device, and can also accept user input. The specific screen 140 may include a display panel 141, a touch panel 142, etc. In addition, other sensors 150 included in the wearable device can identify and sense the environmental parameter information around the wearable device, as well as the wearer's human physiological information, etc. Specifically, the other sensors 150 may include a light sensor, a motion sensor, a gyroscope, a barometer, a hygrometer, a thermometer, an infrared sensor, etc., for sensing environmental parameter information around the wearable device.

[0072] The I / O subsystem 170 is used to control external input and output devices. The display controller 173 in the I / O subsystem 170 receives signals from the screen 140 and / or sends signals to the screen 140. After the screen 140 detects user input, the display controller 173 converts the detected user input into interaction with the user interface object displayed on the screen 140, that is, realizes human-computer interaction. The sensor controller 172 can receive signals from one or more sensors 150 and / or send signals to one or more sensors 150.

[0073] In addition, the measuring component 2 also includes a power supply 180 for supplying power to various components, as well as other components or structures, which will not be described in detail here.

[0074] When the blood pressure measuring electronic device with the above-mentioned overall structure measures the blood pressure of a subject, the airbag 1 is first tied to the subject's limb, and then the airbag 1 is inflated through the fluid pump 21 so that the outer wall of the airbag 1 presses the subject's blood vessels. Figure 5a yes Figure 1 A side view of an electronic device for measuring blood pressure when not measuring blood pressure. Figure 5b yes Figure 1 A side view of the electronic device for measuring blood pressure in the blood pressure measuring state. Figure 5a and Figure 5bAs shown, taking the structure of an electronic device for measuring blood pressure in which the fluid passage 30 is connected to the airbag 1 through the bottom of the housing 201 as an example, when measuring blood pressure, as the airbag 1 is inflated, the size of the airbag 1 will change, and at this time, the airbag 1 arranged on the inner side of the wristband 10 will exert force on the user's wrist 40 in the circumferential direction of the user's wrist 40, thereby compressing the blood vessel at the radial artery c. Accordingly, the blood inside the blood vessel at the radial artery c will impact the blood vessel wall and cause a certain fluctuation in the air pressure inside the airbag. Figure 6a This is a schematic diagram of the changes in the airbag pressure of an electronic device that measures blood pressure during measurement. Figure 6a As shown, after the airbag 1 is inflated to a certain pressure (160 mm Hg in the figure), it will slowly deflate so that the internal pressure of the airbag 1 gradually decreases until it reaches the rated pressure (50 mm Hg in the figure). During the deflation process of the airbag 1, the blood will impact the blood vessel wall under the action of blood pressure. Under the impact, the air pressure inside the airbag 1 does not change smoothly, but produces multiple small fluctuations. The pressure sensor 22 can detect the fluctuation of air pressure through the detection path and send the fluctuation to the processing unit 20 for subsequent processing. Figure 6b This is a waveform diagram of the airbag pressure pulse wave formed by the electronic device measuring blood pressure during measurement. Figure 6b As shown, after obtaining the fluctuation of air pressure, the processing unit 20 can extract the fluctuation signal superimposed on the pressure of the airbag 1 through signal processing calculation, thereby obtaining a pressure pulse wave. Figure 6c It is a schematic diagram of the envelope curve of the pressure pulse wave obtained by the electronic device measuring blood pressure during measurement. Figure 6c As shown, the processing unit 20 performs envelope processing on the pressure pulse wave and corresponding conversion to obtain the blood pressure change of the subject during the measurement process, and extracts blood pressure information such as systolic pressure and diastolic pressure from it. After the measurement is completed, the processing unit 20 controls the fluid valve 23 to open, so that the airbag 1 is deflated through the deflation passage to release the pressure on the subject.

[0075] It can be seen from the above measurement process that when the electronic device 100 for measuring blood pressure realizes the measurement, it is necessary to allow the fluid pump 21 to inflate the inside of the airbag 1, and allow the pressure sensor 22 to communicate with the airbag 1 through the detection path to detect the pressure change inside the airbag 1. However, during the entire measurement process of the pressure sensor 22, the inside of the airbag 1 will undergo a complete inflation-deflation process of inflation-deflation. During the inflation and deflation process, especially during the inflation process, the fluid pump 21 will pressurize the inside of the airbag 1 through the air supply pipeline, and generate a certain airflow impact in the air supply pipeline and inside the airbag 1. In the inside of the conventional electronic device for measuring blood pressure, such as the electronic sphygmomanometer, since the air supply port of the air supply pipeline and the air inlet port of the detection pipeline are arranged in parallel, and the two ports are arranged adjacent to each other, the airflow impact generated by the fluid pump 21 will affect the air pressure near the air inlet port of the detection pipeline, thereby interfering with the normal detection of the pressure sensor and affecting the accuracy of the blood pressure detection of the electronic device 100 for measuring blood pressure.

[0076] To this end, the present application provides an electronic device for measuring blood pressure, wherein when the subject is tested, the airflow impact generated by the inflation of the fluid pump 21 is small, and the pressure sensor 22 inside the electronic device has a high measurement accuracy. To further introduce the electronic device for measuring blood pressure of the present application, the specific structure and various possible implementation forms of the electronic device for measuring blood pressure are described in detail below, taking different scenarios as examples.

[0077] Scene 1

[0078] Figure 7 Schematic diagram of the structure of an electronic device for measuring blood pressure provided in an embodiment of the present application. Figure 7 As shown, the electronic device 100 for measuring blood pressure provided by the present application specifically includes different components such as an airbag 1 and a measuring component 2. The measuring component 2 is located inside the main body 20 of the electronic device 100 for measuring blood pressure, and the measuring component 2 includes a processing unit 20, a fluid pump 21 and a pressure sensor 22. The fluid pump 21 and the sensor 22 are both electrically connected to the processing unit 20, so as to perform corresponding actions or detection operations under the control of the processing unit 20; and in order to achieve the connection between the airbag 1 and the measuring component 2, the electronic device for measuring blood pressure also includes a fluid pipeline. There are multiple fluid pipelines, which are respectively connected between the airbag 1 and different components. Specifically, the fluid pipeline includes a first fluid pipeline 3 connected between the fluid pump 21 and the airbag 1, and a second fluid pipeline 4 connected between the pressure sensor 22 and the airbag 1. Among them, the first fluid pipeline 3 has a first pipe opening 301 connected to the airbag 1, and the second fluid pipeline 4 has a second pipe opening 401 connected to the airbag 1. The opening direction of one of the first pipe opening 301 and the second pipe opening 401 will deviate from the other, so that the first pipe opening 301 and the second pipe opening 401 are far away from each other.

[0079] At this time, at least one of the first fluid pipeline 3 and the second fluid pipeline 4 will have a partial pipe section extending into the interior of the airbag 1, so at least one of the first pipe opening 301 and the second pipe opening 401 will extend all the way into the interior of the airbag 1. The pipe sections of the first fluid pipeline 3 and the second fluid pipeline 4 extending into the interior of the airbag 1 can be defined as built-in pipe sections.

[0080] Specifically, the first tube opening 301 and the second tube opening 401 may both extend into the airbag 1, or one of the first tube opening 301 or the second tube opening 401 may extend into the airbag 1, while the other is connected to the inner wall of the airbag 1. When the first tube opening 301 and the second tube opening 401 both extend into the airbag 1, the opening directions of the first tube opening 301 and the second tube opening 401 may deviate from each other; and when only one of the first tube opening 301 and the second tube opening 401 extends into the airbag 1, the other has a relatively fixed opening direction because it is connected to the inner wall of the airbag 1. In this case, only the direction of the first tube opening 301 or the second tube opening 401 extending into the airbag 1 needs to be controlled to make the two of them move away from each other, and the structure of the fluid pipeline 3 is relatively simple. For the convenience of description, the following description is made by taking the example that one of the first tube opening 301 and the second tube opening 401 extends into the airbag 1, while the other only maintains communication with the inner wall of the airbag 1.

[0081] Specifically, in this embodiment, part of the first fluid pipeline 3 will extend to the interior of the airbag 1, and accordingly, the first pipe opening 301 in the first fluid pipeline 3 will also be located inside the airbag 1; while the pipe section of the second fluid pipeline 4 will not extend into the interior of the airbag 1, so that the second pipe opening 401 of the second fluid pipeline 4 will extend to a position communicating with the inner wall of the airbag 1. At this time, the opening direction of the second pipe opening 401 will face the interior of the airbag 1, and in order to keep the first pipe opening 301 and the second pipe opening 401 away from each other, the opening direction of the first pipe opening 301 will be away from the second pipe opening 401.

[0082] In order to make the electronic device for measuring blood pressure more compact and more portable, the first fluid pipeline 3 and the second fluid pipeline 4 can be connected to the same side of the airbag 1, that is, the first fluid pipeline 3 and the second fluid pipeline 4 will generally remain parallel or approximately parallel to each other, and the first fluid pipeline 3 and the second fluid pipeline 4 will be connected to the airbag 1 in the same or similar direction; at this time, the opening direction of the second pipe opening 401 will be consistent with the extension direction of the second fluid pipeline 4. In order to make the opening direction of the first pipe opening 301 deviate from the second pipe opening 401, the pipe section of the first fluid pipeline 3 extending into the airbag 1 can have a bending section. In this way, the pipe section of the first fluid pipeline 3 from the bending section to the first pipe opening 301 will have an angle with other pipe sections of the first fluid pipeline 3, so that the first pipe opening 301 can face another direction different from the original extension direction of the first fluid pipeline 3. Obviously, since the second fluid pipeline 4 and the first fluid pipeline 3 are connected to the airbag 1 in the same or similar direction, there will be an angle between the second pipe opening 401 and the first pipe opening 301, that is, the directions of the first pipe opening 301 and the second pipe opening 401 are staggered. At this time, the direction of the line between the first pipe opening 301 and the second pipe opening 401 will also have an angle with the direction of the first pipe opening 301, and the size of the angle can be greater than 0° and less than 180°.

[0083] In order to further make the first pipe opening 301 and the second pipe opening 401 move away from each other, the first pipe opening 301 can be away from the second pipe opening 401. At this time, since the opening direction of the first pipe opening 301 will be toward the side inside the airbag 1, the second pipe opening 401 can be set on the side of the first pipe opening 301 away from the opening direction. Exemplarily, after the first fluid pipeline 3 extends into the airbag 1, it can be bent toward the first side of the airbag 1, that is, the direction A shown in the figure; in this way, the first pipe opening 301 will also face this direction. The second pipe opening 401 of the second fluid pipeline 4 can be located at the position of the first fluid pipeline 3 facing the second side of the airbag 1, that is, the direction B shown in the figure. It can be understood that at this time, the direction of the line between the first pipe opening 301 and the second pipe opening 401 will have an angle of approximately 90° with the direction of the first pipe opening 301. Since the opening direction of the first pipe port 301 is away from the second pipe port 401, when the fluid pump 21 provides fluid to the inside of the airbag 1, the fluid rushed out of the first pipe port 301 will flow in the direction away from the second pipe port 401, and the second pipe port 401 will not be directly impacted by the fluid, so the impact and influence it receives are relatively small, which can avoid the impact of the fluid impact on the detection of the pressure sensor 22.

[0084] In addition, since the opening direction of the first pipe opening 301 is away from the second pipe opening 401, when the first fluid pipeline 3 extends inside the airbag, the distance between the first pipe opening 301 and the second pipe opening 401 can be increased to reduce the influence of the airflow rushing out of the first pipe opening 301 on the second pipe opening 401.

[0085] Specifically, as can be seen from the above, a portion of the first fluid pipeline 3 will extend all the way to the inside of the airbag 1, and the portion of the pipeline has a bending section, so that the opening direction of the first pipe opening 301 will be different from the original extension direction of the first fluid pipeline 3. The second fluid pipeline 4 is only connected to the inner wall of the airbag 1, and will not continue to extend to the inside of the airbag 1. At this time, the direction of the second pipe opening 401 can be considered to extend to the inside of the airbag 1, and is consistent with the original extension direction of the second fluid pipeline 4. Therefore, the opening direction of the first pipe opening 301, that is, the air outlet direction of the fluid pump 21 will deviate from the second pipe opening 401, so that when the airflow of the fluid pump 21 rushes out from the first pipe opening 301, it will not directly impact the second pipe opening 401; on the other hand, since the first fluid pipeline 3 has an extension section, there will be a certain distance between the first pipe opening 301 and the second pipe opening 401. In this way, it can be ensured that the second pipe opening 401 can achieve a relatively stable air intake, so that the pressure sensor 22 is less disturbed when performing detection.

[0086] Optionally, the edge of the second pipe opening 401 is kept flush with the inner wall of the airbag 1. This not only facilitates the positioning and connection between the second pipe opening 401 and the airbag 1, but also, when the internal space of the airbag 1 is limited, the second pipe opening 401 is set at a position flush with the inner wall of the airbag 1, so that the second pipe opening 401 and the first pipe opening 301 are as far apart as possible, which helps to reduce the impact of the airflow from the first pipe opening 301 on the second pipe opening 401.

[0087] In an optional embodiment, the first fluid pipeline 3 and the second fluid pipeline 4 may be nested inside and outside, that is, the first fluid pipeline 3 and the second fluid pipeline 4 are connected to the inside of the airbag 1 at the same position.

[0088] Specifically, in the electronic device 200 for measuring blood pressure, in order to facilitate the accommodation of the first fluid pipeline 3, the part of the second fluid pipeline 4 adjacent to the airbag 1 will have a larger inner diameter, so that the first fluid pipeline 3 is arranged inside the part of the second fluid pipeline 4. In this way, the first fluid pipeline 3 forms an inner pipeline section, and the second fluid pipeline 4 forms an outer pipeline section, and a gap for fluid flow can be formed between the inner pipeline section and the outer pipeline section. In order to allow the first fluid pipeline 3 and the second fluid pipeline 4 to independently pass fluid, the first fluid pipeline 3 and the second fluid pipeline 4 are not connected to each other. At this time, since the second fluid pipeline 4 is connected to the airbag 1 through the second pipe opening 401, accordingly, the first end of the first fluid pipeline 3 can extend from the second pipe opening 401 into the airbag 1, and form the first pipe opening 301 and other pipe sections extending inside the airbag 1; and the other end of the first fluid pipeline 3 will penetrate the pipe wall of the second fluid pipeline 4 and be used to connect with the fluid pump 21.

[0089] For ease of understanding, Figure 7 The direction of fluid flow in the electronic device for measuring blood pressure is specifically described. Figure 8 yes Figure 7 Schematic diagram of the flow state of the fluid in the fluid path. Figure 8 As shown, the fluid pump 21 drives the fluid to flow along the first fluid pipeline 3 and enter the interior of the airbag 1 through the first pipe opening 301. Since the airbag 1 has a relatively high pressure, the fluid in the airbag 1 will flow into the second fluid pipeline 4 through the second pipe opening 401 under the action of pressure, and will reach the pressure sensor 22. In this way, the pressure sensor 22 can detect the pressure. When the airbag is deflated, the fluid valve 23 is opened, and a part of the first fluid pipeline 3 will serve as a pipeline for the fluid to flow out, and the flow direction of the fluid is opposite to that when the airbag 1 is inflated, so that the fluid flows out from the fluid valve 23 along the fluid pipeline.

[0090] Fig. 9 yes Figure 7 A schematic diagram of the specific structure of the connection area between the fluid pipeline and the air bag in an electronic device for measuring blood pressure. Fig.10 yes Figure 7 Schematic diagram of the nested structure of the first fluid pipeline and the second fluid pipeline. Fig. 9 and Fig.10As shown, the pipe section of the first fluid pipeline 3 disposed inside the second fluid pipeline 4 can be defined as the first pipe section 31. It can be understood that there is a certain gap between the first pipe section 31 and the pipe section of the second fluid pipeline 4 located outside the first pipe section 31, so that the fluid can flow into the second fluid pipeline 4 through the gap. The shape of the gap between the first pipe section 31 and the peripheral pipe section can be changed accordingly according to the relative positions of the first pipe section 31 and the second fluid pipeline 4. For example, there is a gap between the first pipe section 31 and the inner wall of the second fluid pipeline 4 in the circumferential direction, so that an annular gap is formed between the first pipe section 31 and the second fluid pipeline 4, and the gas inside the airbag 1 can enter the second fluid pipeline 4 through the annular gap and reach the pressure sensor 22.

[0091] In this way, the first fluid pipeline 3 and the second fluid pipeline 4 are arranged in a manner of being nested inside and outside, and the first fluid pipeline 3 and the second fluid pipeline 4 are connected to the same part of the airbag 1, that is, the first fluid pipeline 3 and the second fluid pipeline 4 are connected to the same connection point on the airbag 1. Compared with the manner in which the first fluid pipeline 3 and the second fluid pipeline 4 are arranged side by side, the space occupied by the part of the fluid pipeline connected to the airbag 1 in the manner of nesting inside and outside and the airbag 1 is smaller, which can make the airbag 1 and the entire electronic device for measuring blood pressure have a more compact structure, which is conducive to the miniaturization and portability of the electronic device for measuring blood pressure.

[0092] As for the first fluid pipeline 3, a part of the pipe section will extend to the inside of the airbag 1 and bend to one side of the airbag 1. The pipe section of the first fluid pipeline 3 extending to the inside of the airbag 1 can be the second pipe section 32, and the second pipe section 32 and the first pipe section 31 are connected in sequence, and a first pipe opening 301 is formed at the end position of the second pipe section 32, which is set away from the second pipe opening 401. At this time, the second pipe section 32 is the built-in pipe section of the first fluid pipeline 3. The first pipe opening 301 can have a variety of different positions relative to the inner wall of the airbag 1, such as being close to and close to the inner wall of the airbag 1, or having a large distance from the inner wall of the airbag 1. In this embodiment, the first pipe opening 301 is attached to the inner wall of the airbag 1 as an example for explanation.

[0093] Specific as Fig. 9As shown, the second pipe section 32 as the built-in pipe section includes a first extension section 321 and a second extension section 322 extending into the inner side of the airbag 1. The first extension section 321 and the second extension section 322 are arranged in sequence along the air outlet direction. The first extension section 321 is connected to the first pipe section 31. The first pipe opening 301 is located at the end of the second extension section 322, and the first extension section 321 and the second extension section 322 are connected through a first bending section 323. The first bending section 323 will bend to one side of the airbag 1, for example, the A side in the figure, so that the opening direction of the first pipe opening 301 is toward the A side. The airbag 1 can have multiple inner walls facing different directions, and the inner wall of one side of the airbag 1 connected to the fluid pipeline can be set as the first inner wall 11. The first extension section 321 will bend to the A side just after it extends into the inner wall of the airbag 1. In this way, the second extension section 322 and the first pipe opening 301 will both be attached to the first inner wall 11 and can be supported by the first inner wall 11. When the electronic device for measuring blood pressure is working, the fluid will rush out of the first nozzle 301 at a high speed. At this time, the second extension section 322 and the first nozzle 301 can be supported by the first inner wall 11, which prevents the extension part of the first fluid pipeline 3 extending into the airbag 1 (including the first extension section 321 and the second extension section 322) from shaking, trembling, or even changing the direction of the air outlet under the impact of fluid such as airflow, thereby enhancing the stability of the electronic device for measuring blood pressure when working and improving the accuracy of the measurement. In addition, it can be understood by those skilled in the art that when the second extension section 322 has different extension lengths, the first nozzle 301 can have different positions inside the airbag 1. For example, the first nozzle 301 can extend along the inner wall direction of the airbag 1 and fit with the inner wall in other directions different from the first inner wall 11.

[0094] In order to reduce the influence of the first pipe opening 301 on the second pipe opening 401, the first extension section 321 and the second extension section 322 can maintain a vertical or approximately vertical angle. In this embodiment, the first extension section 321 and the second extension section 322 are arranged perpendicular to each other. At this time, the extension direction of the first extension section 321 can be parallel to the extension direction of the first pipe section 31, that is, parallel to the second fluid pipeline 4, and the second extension section 322 extends to the A side perpendicular to the first extension section 321. It can be understood that the extension direction of the second extension section 322 is perpendicular to the directions of the first extension section 321 and the second pipe opening 401. Fig.11 yes Figure 7 A schematic diagram of the relative positions of the first tube opening and the second tube opening in the electronic device for measuring blood pressure. Fig.11As shown, from the length direction of the airbag 1, that is, along the C direction, since the first pipe opening 301 extends to the inside of the airbag 1 through the second pipe section 32, there is a certain distance between the first pipe opening 301 and the second pipe opening 401. At this time, the length a of the second extension section 322 can be approximately equal to the distance between the first pipe opening 301 and the second pipe opening 401.

[0095] exist Figures 7 to 11 In the structure shown, the second bending section 312 is connected to the first inner wall 11, so that the first pipe mouth 301 is supported by the first inner wall 11. Specifically, the second bending section 312 can be bonded to the first inner wall 11 by an adhesive 12, or fixed to the first inner wall 11 by other fixing structures. The second bending section 312 can be fixed to the first inner wall 11 by a whole section, or fixed to the first inner wall 11 by a plurality of fixed points arranged at intervals, as long as the second bending section 312 can be reliably and firmly fixed to the first inner wall 11, and the first pipe mouth 301 will not shake or change direction when subjected to fluid impact.

[0096] When the first tube opening 301 and the inner wall of the airbag 1 are arranged in close contact, since the airbag 1 is made of a relatively soft material, in order to prevent the first fluid pipeline 3 from interfering with the normal deformation of the airbag 1, as an optional method, the extension section of the first fluid pipeline 3 extending into the interior of the airbag 1, that is, the second tube section 32, can be a soft tube section that can produce elastic deformation (as shown by the tube wall boundary indicated by the dotted line in Figure 6). In this way, the second extension section 322 and the first tube opening 301 can move and deform accordingly with the expansion or contraction of the airbag 1, and will not be separated from the first inner wall 11 of the airbag 1. In addition, the first fluid pipeline 3 can expand or collapse accordingly with the deformation of the airbag 1, and will not form a hard protrusion inside the airbag 1, so that the subject is more comfortable to wear.

[0097] The second pipe section 32 may be made of a variety of different soft materials. For example, the second pipe section 32 may be a latex tube or a rubber tube, etc., which is not limited here.

[0098] When the first fluid pipeline 3 and the second fluid pipeline 4 are nested inside and outside, in order to avoid the first fluid pipeline 3 and the second fluid pipeline 4 from influencing each other under the internal fluid pressure, the first pipe section 31 in the first fluid pipeline 3 and the pipe section of the second fluid pipeline 4 located outside the airbag can be hard pipe sections that are not easy to deform. In this way, even if there is a large airflow impact in the first fluid pipeline 3, the pipe wall of the first fluid pipeline 3 can maintain its original shape, so that the second fluid pipeline 4 has a relatively stable state, avoiding the fluid in the second fluid pipeline 4 from being affected by the first fluid pipeline 3 or the external environment and causing pressure changes, thereby improving the detection accuracy of the pressure sensor, which is conducive to the correct measurement and display of blood pressure values. In addition, making the pipe sections of the first fluid pipeline 3 and the second fluid pipeline 4 located outside the airbag 1 hard pipe sections is also conducive to maintaining the pipeline connection between the measuring component 2 and the airbag 1, and improving the structural strength of the electronic device for measuring blood pressure.

[0099] It can be understood by those skilled in the art that the pipe sections of the first fluid pipeline 3 and the second fluid pipeline 4 located outside the airbag 1 can have a certain elastic strain capacity while ensuring that the inside of the fluid pipeline has a relatively stable state. At this time, this part of the pipe section of the first fluid pipeline 3 and the second fluid pipeline 4 can have both good support performance and a certain elastic deformation capacity, so that it can absorb part of the energy of the airflow impact during operation, so that the airflow pipeline has a relatively stable working state during operation, and ensure the normal operation of the electronic device for measuring blood pressure. Among them, optionally, the pipe section of the first fluid pipeline 3 and the second fluid pipeline 4 located outside the airbag 1 can be formed by skeleton rubber or other flexible materials with a certain support capacity.

[0100] In order to buffer the airflow entering the second fluid pipeline 4 and reduce the interference of the airflow impact on the pressure sensor, the second fluid pipeline 4 may also have a structure for buffering the airflow. As an optional embodiment, the second fluid pipeline 4 may have at least one second bending section 41.

[0101] Specifically, since the second fluid pipeline 4 has the second bending section 41, there is a certain angle between the pipe section of the second fluid pipeline 4 located before the second bending section 41 and the pipe section located after the second bending section 41. When the airflow flows through the second fluid pipeline 4, it collides with the pipe wall of the second bending section 41 when encountering the second bending section 41, and consumes the impact energy of the airflow, thereby reducing the impact of the airflow when it reaches the pressure sensor.

[0102] In order to achieve a better buffering effect, the second bending section 41 may have a relatively large bending angle. Optionally, the bending angle of the second bending section 41 may be maintained at about 90 degrees, that is, the pipe sections located before and after the second bending section 41 remain perpendicular to each other. In this way, when the airflow flows through the second bending section 41, the airflow direction changes greatly, which can achieve better buffering and attenuation of the airflow impact.

[0103] Optionally, the number of the second bending sections 41 may be one or more. When there are multiple second bending sections 41, the gas can change direction multiple times after entering the second fluid pipeline 4 through multiple different second bending sections 41, so as to consume the impact energy of the gas multiple times, thereby having a better buffering effect.

[0104] In addition, during the detection process of the electronic device for measuring blood pressure, the airbag 1 will slowly deflate after being inflated and compressing the limbs of the subject, so that the pressure sensor can detect the pressure fluctuation caused by the air pressure shock during the process. In order to realize the deflation operation of the airbag 1, the electronic device for measuring blood pressure includes a fluid valve 23 for deflation, and accordingly, the fluid pipeline includes a third fluid pipeline 5 connected between the fluid valve 23 and the airbag 1. When the airbag 1 needs to be deflated, the fluid valve 23 can be opened to allow the gas in the airbag 1 to flow out through the third fluid pipeline 5 and the fluid valve 23. In this embodiment, in order to realize the control of the fluid valve 23, the fluid valve 23 can be a solenoid valve, and the fluid valve 23 is electrically connected to the processing unit in the electronic device for measuring blood pressure, so that the opening or closing of the fluid valve is controlled by the control instruction of the processing unit.

[0105] The third fluid pipeline 5 may also have a structure similar to other fluid pipelines. For example, in an optional embodiment, the third fluid pipeline 5 may be connected to the airbag 1 through a third pipe opening.

[0106] Since the airflow in the third fluid pipeline 5 is relatively gentle and the airflow speed is relatively slow when the electronic device for measuring blood pressure performs the deflation operation of the airbag 1, the airflow in the third fluid pipeline 5 has a relatively small effect on the detection accuracy of the pressure sensor, and the setting method and structure of the third fluid pipeline 5 are also less restricted. At this time, as an optional method, the third pipe opening can have a relatively similar structure to the second pipe opening 401. Specifically, similar to the second pipe opening 401, the third pipe opening can also extend to a position connected to the inner wall of the airbag 1, for example, on the first inner wall 11. At this time, the edge of the third pipe opening can be kept flush with the first inner wall 11.

[0107] In addition, since the airflow in the third fluid pipeline 5 is less affected, in another optional manner, the third fluid pipeline 5 can also share part of the pipeline with other fluid pipelines, for example, sharing the pipeline with the first fluid pipeline 3 or the second fluid pipeline 4. In this embodiment, since the first pipe opening 301 and part of the pipe section of the first fluid pipeline 3 are made of soft materials, when the fluid pump 21 connected to the first fluid pipeline 3 is not working, the first pipe opening 301 and the connected pipe section may collapse, affecting the gas in the airbag entering the first fluid pipeline 3. Therefore, in order to allow the third fluid pipeline 5 to ventilate normally, this embodiment is described by taking the third fluid pipeline 5 and the second fluid pipeline 4 sharing part of the pipe section, for example, the pipe section of the second fluid pipeline 4 connected to the airbag 1 as an example. At this time, the third fluid pipeline 5 and the second fluid pipeline 4 will be connected to the fluid valve 23 and the fluid pump 21 respectively, and the third fluid pipeline 5 and the second fluid pipeline 4 will be merged into the same pipe section in the process of extending to the airbag 1, and connected to the airbag 1 through the first pipe opening 301.

[0108] At this time, since the third fluid pipeline 5 and the second fluid pipeline 4 are both connected to the airbag 1 via the second pipe opening 401, the space occupied at the connection between the fluid pipeline and the airbag 1 is relatively small, and the relatively limited surface space of the airbag 1 can be effectively utilized, which is beneficial to the miniaturization and compactness of the airbag and the entire electronic device for measuring blood pressure.

[0109] As an optional implementation, the pipe section of the third fluid pipeline 5 located outside the airbag 1 can be a hard pipe section that is not easily deformed. The material of the third fluid pipeline 5 can be skeleton rubber or other flexible materials with certain support capabilities.

[0110] In this embodiment, the electronic device for measuring blood pressure specifically includes an airbag and a measuring component, wherein the measuring component includes a processing unit, a fluid pump and a pressure sensor, and the fluid pump and the sensor are electrically connected to the processing unit; the fluid pipeline includes a first fluid pipeline connected between the fluid pump and the airbag, and a second fluid pipeline connected between the pressure sensor and the airbag. Among them, the first fluid pipeline has a first pipe opening connected to the airbag, and the second fluid pipeline has a second pipe opening connected to the airbag, and the opening direction of one of the first pipe opening and the second pipe opening will deviate from the other, so that the first pipe opening and the second pipe opening are far away from each other. In this way, when the fluid pump in the electronic device for measuring blood pressure provides fluid to the inside of the airbag, the fluid rushed out of the first pipe opening will flow in a direction away from the second pipe opening, and there is a certain distance between the first pipe opening and the second pipe opening, so the second pipe opening will not be directly impacted by the fluid, and the impact and influence received are small, which can avoid the impact of the fluid impact on the detection of the pressure sensor, and has good blood pressure measurement accuracy.

[0111] Scene 2

[0112] In an electronic device for measuring blood pressure, in order to reduce the influence of airflow on the pressure sensor, the distance between the first tube opening and the second tube opening can be increased. For example, in addition to the method of fitting the first tube opening and the inner wall of the airbag in the aforementioned embodiment, the first tube opening can also be extended to a position with a certain distance from the inner wall of the airbag. Fig.12 FIG. 1 is a schematic diagram of another electronic device for measuring blood pressure provided in an embodiment of the present application. Fig.12 As shown, the electronic device 200 for measuring blood pressure provided in this scenario has an overall structure, function and working principle similar to the electronic device for measuring blood pressure in the aforementioned scenario, and will not be described in detail here. The difference is that in the electronic device 200 for measuring blood pressure in this scenario, the second nozzle 401 of the second fluid pipeline 4 will be located flush with the inner wall of the airbag 1, and the portion of the first fluid pipeline 3 extending into the interior of the airbag 1, where the bending and changing direction occurs, is at a certain distance from the inner wall of the airbag 1, so that the first nozzle 301 and the inner wall of the airbag 1 maintain a certain distance.

[0113] It should be noted that in this scenario, the first fluid pipeline 3 and the second fluid pipeline 4 are nested inside and outside. The specific structure and nesting method of the first fluid pipeline 3 and the second fluid pipeline 4 can refer to the description of the above scenario one.

[0114] In the second fluid pipeline 4 of the electronic device 200 for measuring blood pressure, the second nozzle 401 does not extend into the interior of the airbag 1, but remains flush with the inner wall of the airbag 1. Exemplarily, the edge of the second nozzle 401 can be flush with the first inner wall 11 of the airbag 1. At this time, if the first nozzle 301 is also arranged in close contact with the first inner wall 11 of the airbag 1, although the opening direction of the first nozzle 301 will deviate from the second nozzle 401, there is a closer distance between the first nozzle 301 and the second nozzle 401. Therefore, a certain distance can be provided between the first nozzle 301 and the inner wall of the side of the airbag 1, that is, the first inner wall 11, so as to increase the distance between the first nozzle 301 and the second nozzle 401.

[0115] Fig.13 yes Fig.12 A schematic diagram of the specific structure of the connection area between the fluid pipeline and the air bag in the electronic device for measuring blood pressure. Fig.13As shown, for the first fluid pipeline 3, the first pipe section 31 of the first fluid pipeline 3 is nested inside the second fluid pipeline 4, and the built-in pipe section in the first fluid pipeline 3 extending to the inside of the airbag 1 can be the second pipe section 32. The second pipe section 32 has a first extension section 321 and a second extension section 322 connected in sequence along the gas outlet direction, and the first pipe opening 301 will be located at the end of the second extension section 322, and the first extension section 321 and the second extension section 322 are connected through the first bending section 323. In the second pipe section 32, after the first extension section 321 extends into the inside of the airbag 1, it will extend to a position with a certain distance from the first inner wall 11 of the airbag 1, and the first bending section 323 located between the first extension section 321 and the second extension section 322 will also have a distance from the inner wall of the airbag 1. At this time, the second extension section 322 connected to the first bending section 323 and the first pipe opening 301 located at the end of the second extension section 322 will have a corresponding distance from the first inner wall 11 of the airbag 1. At this time, since the second pipe opening 401 is arranged at the inner wall of the airbag 1, a certain distance can be formed between the first pipe opening 301 and the second pipe opening 401, and the distance between the first pipe opening 301 and the second pipe opening 401 can be determined by the length and direction of each part in the second pipe section 32. Specifically, compared with the aforementioned scenario 1, the distance between the first pipe opening 301 and the second pipe opening 401 is not only determined by the length a of the second extension section 322, but also depends on the length b of the first extension section 321.

[0116] Optionally, the first extension section 321 can extend into the middle area inside the airbag 1. At this time, the first bending section 323 in the second tube section 32 has a certain distance from the inner walls in all directions of the airbag 1. In this way, the airflow rushing out of the first tube opening 301 will have a smaller impact on the inner wall of the airbag 1, and thus the second tube opening 401 located on the inner wall of the airbag 1 is also less impacted, which is beneficial to improving the measurement accuracy.

[0117] For example, in this embodiment, the first extension section 321 and the second fluid pipeline 4 can be kept parallel or approximately parallel to each other, and a substantially vertical bending angle is formed between the second extension section 322 and the first extension section 321. At this time, a right triangle can be approximately formed between the first pipe opening 301, the second pipe opening 401 and the first bending section 323, and the distance between the first pipe opening 301 and the second pipe opening 401 will be greater than the length of each individual pipe section in the second pipe section 32.

[0118] In addition, the first extension section 321 and the second extension section 322 may also have other different directions. For example, the second extension section 322 may extend in a direction away from the first inner wall 11 to increase the distance between the first pipe opening 301 and the first inner wall 11. It is understood by those skilled in the art that the bending angle between the first extension section 321 and the second extension section 322 may be greater than or equal to 90 degrees to form a larger distance between the first pipe opening 301 and the second pipe opening 401.

[0119] In order to ensure that the first pipe opening 301 of the first fluid pipeline 3 always maintains a certain distance from the inner wall of the airbag 1, as an optional form, the second pipe section 32 of the first fluid pipeline 3 can be a hard pipeline. Specifically, the airbag 1 is made of a retractable material, and the second pipe section 32 can be formed of skeleton rubber or other materials with a certain support capacity. At this time, the airbag 1 can shrink or expand with the change of air pressure, and the second pipe section 32 will have a certain rigidity. After extending into the inner wall of the airbag 1, it can maintain this shape and maintain a relatively certain distance from the inner wall of the airbag 1; it will not bend or collapse and stick to the inner wall of the airbag 1.

[0120] In order to simplify the manufacturing process of the first fluid pipeline 3, optionally, the entire first fluid pipeline 3 including the second pipe section 32 and the first pipe section 31 can be made of skeleton rubber or other materials with similar properties. Fig.12 In this way, the first fluid pipeline 3 can be uniformly manufactured and formed, which reduces the difficulty of assembly and manufacturing.

[0121] In addition, optionally, the second fluid pipeline 4 can also be made entirely of skeleton rubber or other similar materials mentioned above, so that the first fluid pipeline 3 and the second fluid pipeline 4 can be manufactured through the same process, the manufacturing process is relatively simple, and the cost is low.

[0122] When the fluid pipeline includes a third fluid pipeline 5 connected between the fluid valve 23 and the airbag 1, in an optional manner, the third fluid pipeline 5 can also share part of the pipeline with other fluid pipelines, for example, sharing the pipeline with the first fluid pipeline 3 or the second fluid pipeline 4. Exemplarily, in order to reduce the influence of the fluid valve 23 on the pressure sensor 22, in this embodiment, the third fluid pipeline 5 and the first fluid pipeline 3 share part of the pipe section, for example, the pipe section of the first fluid pipeline 3 connected to the airbag 1 is used as an example for explanation. At this time, the third fluid pipeline 5 and the first fluid pipeline 3 will be connected to the fluid valve 23 and the fluid pump 21 respectively, and the third fluid pipeline 5 and the first fluid pipeline 3 will be merged into the same pipe section in the process of extending to the airbag 1, and connected to the airbag 1 through the first pipe opening 301. Since the first fluid pipeline 3 is composed of a hard pipe section, it will not collapse or cause ventilation inconvenience, so the normal ventilation of the third fluid pipeline 5 can be guaranteed. Moreover, since the third fluid pipeline 5 and the first fluid pipeline 3 are both connected to the airbag 1 via the first pipe opening 301, the space occupied by the connection between the fluid pipeline and the airbag 1 is relatively small, and the relatively limited surface space of the airbag 1 can be effectively utilized, which is conducive to the miniaturization and compactness of the airbag and the entire electronic device for measuring blood pressure.

[0123] In this embodiment, the electronic device for measuring blood pressure includes a measuring assembly, an airbag, and a fluid pipeline, and the first pipe opening in the first fluid pipeline and the second pipe opening in the second fluid pipeline are oriented in opposite directions; wherein, the portion of the first fluid pipeline extending into the airbag, where the portion where the bend and the direction change occur, is spaced a certain distance from the inner wall of the airbag, so that the first pipe opening and the inner wall of the airbag are kept at a certain distance. In this way, the airflow rushing out of the first pipe opening will have a smaller impact on the inner wall of the airbag, and thus the second pipe opening located on the inner wall of the airbag will also be impacted less, which is conducive to improving the measurement accuracy.

[0124] Scene 3

[0125] In order to reduce the influence of the airflow of the fluid pump on the pressure sensor, in addition to extending the first fluid pipeline to the interior of the airbag, the second fluid pipeline can also be extended to the interior of the airbag. Fig.14 Schematic diagram of the structure of the third electronic device for measuring blood pressure provided in the embodiment of the present application. Fig.14 As shown, the electronic device 400 for measuring blood pressure provided in this scenario has an overall structure, function and working principle similar to those of the aforementioned embodiment, and will not be described in detail here. Different from the scenario of the aforementioned embodiment, in this scenario, the second fluid pipeline 4 has a portion of the pipeline extending into the interior of the airbag 1, while the first fluid pipeline 3 does not extend into the interior of the airbag 1.

[0126] Specifically, the pipe section of the first fluid pipeline 3 only maintains communication with the airbag 1, and does not extend into the airbag 1. In this way, the first pipe opening 301 of the first fluid pipeline 3 will extend to a position communicating with the inner wall of the airbag 1. At this time, the opening direction of the first pipe opening 301 will face the inside of the airbag 1, and in order to keep the first pipe opening 30 and the second pipe opening 401 of the second fluid pipeline 4 away from each other, the opening direction of the second pipe opening 401 can be made to face away from the first pipe opening 301.

[0127] In this scenario, the first tube opening 301 and the second tube opening 401 can also be nested inside and outside. In this way, the first tube opening 301 and the second tube opening 401 will be connected to the same part of the airbag 1 to effectively utilize the limited space of the airbag 1, thereby reducing the volume of the airbag 1 and the entire electronic device 400 for measuring blood pressure, which is conducive to the miniaturization and portability of the electronic device 400 for measuring blood pressure.

[0128] Specifically, the second pipe opening 401 can be arranged inside the first pipe opening 301, and there is a gap between the outer wall of the second pipe opening 401 and the inner wall of the first pipe opening 301. In this case, one end of the second fluid pipeline 4 can extend into the airbag through the first pipe opening 301, and constitute the part of the second fluid pipeline 4 extending inside the airbag 1 and the second pipe opening 401; while the other end of the second fluid pipeline 4 will penetrate the wall of the first fluid pipeline 3 and be connected to the pressure sensor 22. For ease of understanding, the following is a description of the structure of the second fluid pipeline 4. Fig.14 The direction of fluid flow in the embodiment is described in detail. Fig.15 yes Fig.14 Schematic diagram of the flow state of the fluid in the fluid path. Fig.15 As shown, similar to the above scenario, the fluid pump 21 drives the fluid to flow along the first fluid pipeline 3 and enter the interior of the airbag 1 through the first pipe port 301. Since the airbag 1 has a relatively high pressure, the fluid in the airbag 1 will flow into the second fluid pipeline 4 through the second pipe port 401 under the action of pressure, and will reach the pressure sensor 22. In this way, the pressure sensor 22 can detect the pressure. When the airbag is deflated, the fluid valve 23 is opened. At this time, part of the first fluid pipeline 3 will serve as the outflow pipeline, and the flow direction of the fluid is opposite to that when the airbag is inflated, so that the fluid flows out from the fluid valve 23 along the fluid pipeline.

[0129] Fig.16 yes Fig.14 A schematic diagram of the specific structure of the connection area between the fluid pipeline and the air bag in an electronic device for measuring blood pressure. Figures 14 to 16As shown, part of the pipe section of the second fluid pipeline 4 will be nested with the first fluid pipeline 3, and the pipe section of the second fluid pipeline 4 surrounded by the first fluid pipeline 3 can be set as the third pipe section 42. For the second fluid pipeline 4, part of the pipe section will extend to the inside of the airbag 1 and bend to one side of the airbag 1. The built-in pipe section of the second fluid pipeline 4 extending to the inside of the airbag 1 can be the fourth pipe section 43, and the fourth pipe section 43 will be connected to the third pipe section 42 in sequence.

[0130] In which, in an optional embodiment, the fourth pipe segment 43 as a built-in pipe segment may include a third extension segment 431 and a fourth extension segment 432, and the third extension segment 431 and the fourth extension segment 432 are arranged in sequence along the flow direction of the airflow in the second fluid pipeline 4, and the third extension segment 431 and the fourth extension segment 432 are connected by a third bending segment 433.

[0131] like Fig.16 As shown, the second pipe opening 401 is located at the end of the third extension section 431, and the end of the third extension section 431 facing away from the second pipe opening 401 is connected to the fourth extension section 432 via the third bending section 433. Similar to the aforementioned scenario one, the third bending section 433 will bend toward one side of the airbag 1, such as side A, so that the opening direction of the first pipe opening 301 is toward side A. The airbag 1 can have multiple inner walls facing different directions, and the inner wall of one side of the airbag 1 connected to the fluid pipeline can be set as the first inner wall 11. After the fourth extension section 432 extends into the inner wall of the airbag 1, it will bend toward side A. In this way, the second pipe opening 401 can face an opening direction different from that of the first pipe opening 301. Among them, the second pipe opening 401 and the inner wall of the airbag 1 can have a variety of different relative positions. For example, in an optional embodiment, for example Fig.13 and Fig.14 As shown, the third extension section 431 and the second nozzle 401 can be attached to the first inner wall 11 and supported by the first inner wall 11. At this time, the second nozzle 401 can be well fixed and positioned by the inner wall of the airbag 1 to avoid the second nozzle 401 shaking inside the airbag and other situations that interfere with the detection accuracy. Optionally, the third extension section 431 can be fixed to the first inner wall 11 by an adhesive 13 or the like.

[0132] In addition, in order to increase the distance between the second nozzle 401 and the first nozzle 301, in another optional manner, a certain distance may be provided between the second nozzle 401 and the first inner wall 11. When there is a distance between the second nozzle 401 and the first inner wall 11, and the first nozzle 301 is in a position flush with the first inner wall 11, there is a large distance between the second nozzle 401 and the first nozzle 301, so that the airflow rushing out of the first nozzle 301 will be slowed down when it flows to the position of the second nozzle 401, thereby avoiding the impact of the airflow on the normal detection of the pressure sensor and ensuring the accuracy of the measurement. At this time, the specific structure of the third extension section 431, the fourth extension section 432 and the second nozzle 401 in the second fluid pipeline 4 can have a structure similar to that of the first fluid pipeline 3 in the aforementioned scenario 2, which will not be repeated here.

[0133] In this embodiment, the structure in which the third extension section 431 and the second nozzle 401 are both attached to the first inner wall 11 is used as an example for description. In order to reduce the influence of the first nozzle 301 on the second nozzle 401, the third extension section 431 and the fourth extension section 432 can maintain a vertical or approximately vertical angle. In this embodiment, the third extension section 431 and the fourth extension section 432 are arranged perpendicular to each other. At this time, the extension direction of the fourth extension section 432 can be parallel to the extension direction of the first nozzle 301, and the third extension section 431 extends in a direction perpendicular to the fourth extension section 432 and is approximately perpendicular to the first nozzle 301.

[0134] Since the second fluid pipeline 4 connected to the second tube opening 401 is in communication with the pressure sensor, as an optional implementation, the position of the second tube opening 401 inside the airbag 1 may correspond to the position of the artery of the subject.

[0135] Specifically, when the airbag 1 is tied to the limb of the subject, the artery on the limb of the subject will be close to and fit with a certain part of the airbag; when the second tube port 401 is located at the part inside the airbag 1, since the distance between the artery and the second tube port 401 is relatively close, the air pressure change at the second tube port 401 responds more promptly to the blood impact in the artery, and the detection of the pressure sensor is also relatively fast and direct; at the same time, the air pressure change at the second tube port 401 is less affected by other parts of the airbag 1, which improves the accuracy of the detection. In this way, the second tube port 401 can collect the airbag pressure change near the artery, so that the detection of the pressure sensor has a faster response speed and higher accuracy.

[0136] Fig.17 yes Fig.14 Schematic diagram of the position of the second nozzle of the electronic device for measuring blood pressure during measurement. Fig.17As shown, specifically, when the electronic device 300 for measuring blood pressure is set on the wrist of the subject, the position of the second tube opening 401 on the airbag 1 can correspond to the position of the radial artery c of the subject. At this time, the airbag 1 can surround the wrist of the subject, and after the second fluid pipeline 4 extends into the airbag 1, it can extend along the circumference of the wrist (which can be the length direction of the airbag), so that the second tube opening 401 is located at or near the radial artery c of the subject.

[0137] In addition, in order to enable the second fluid pipeline 4 itself to buffer the impact of the airflow, as an optional method, the part of the second fluid pipeline 4 located outside the airbag 1 may also have a second bending section 41. Among them, since there are inner and outer nested pipe sections between the second fluid pipeline 4 and the first fluid pipeline 3, in order to avoid mutual interference between the two fluid pipelines, the second bending section 41 of the second fluid pipeline 4 is located outside the mutually nested pipe sections. Specifically, the second bending section 41 of the second fluid pipeline 4 can be located between the third pipe section 42 and the pressure sensor 22. There is a certain angle between the pipe section of the second fluid pipeline 4 located between the second bending section 41 and the pipe section located after the second bending section 41, so that the airflow passing through the second bending section 41 collides with the pipe wall of the second fluid pipeline 4, thereby consuming the airflow energy and reducing the impact.

[0138] In addition, since the second pipe opening 401 is mainly used to supply the gas in the airbag 1 to enter the second fluid pipeline 4, and the second pipe opening 401 itself does not generate airflow. When the airbag 1 is deflated and contracted, the internal space of the airbag 1 continues to decrease. At this time, if the fourth pipe section 43 of the second fluid pipeline 4 located inside the airbag 1 does not have sufficient support capacity, the second pipe opening 401 may be deformed under the pressure of the airbag 1, and the pipe opening cross-sectional area of ​​the second pipe opening 401 will be reduced accordingly. At this time, the normal gas flow inside the second fluid pipeline 4 and the airbag 1 will be disturbed, and further affect the normal detection of the pressure sensor.

[0139] In order to prevent the deformation of the airbag 1 from affecting the normal ventilation of the second pipe opening 401, as an optional method, the fourth pipe section 43 of the second fluid pipeline 4 located inside the airbag 1 is a hard pipe. In this way, even if the airbag 1 compresses the second fluid pipeline 4 due to the reduction of the internal space, the fourth pipe section 43 and the second pipe opening 401 will maintain the original shape and cross-sectional area, thereby maintaining the normal circulation of the gas in the second fluid pipeline 4. Specifically, the extension section of the second fluid pipeline 4 located inside the airbag 1 can be made of skeleton rubber, or other anti-deformation materials commonly used by those skilled in the art, which is not limited here.

[0140] In addition, similar to the aforementioned scenario, in order to allow the airbag 1 to perform the deflation operation, the electronic device 400 for measuring blood pressure also includes a fluid valve 23 and a third fluid pipeline 5 connecting the fluid valve 23 and the airbag 1. Various possible implementation forms and structures of the third fluid pipeline 5 are similar to those of the third fluid pipeline in the aforementioned embodiment, and will not be described in detail here.

[0141] In order to reduce the number of connection points between the fluid pipeline and the airbag 1, the third fluid pipeline 5 can share a portion of the pipe section with other fluid pipelines. In this embodiment, as an optional method, the first end of the third fluid pipeline 5 can be connected to the first fluid pipeline 3, thereby sharing a portion of the pipe section with the first fluid pipeline 3, and being connected to the airbag through the first pipe port 301; and the second end of the third fluid pipeline 5 is connected to the fluid valve 23. Since the third fluid pipeline 5 and the first fluid pipeline 3 are both connected to the airbag 1 through the first pipe port 301, the space occupied by the fluid pipeline and the airbag 1 is small, and the relatively limited surface space of the airbag 1 can be effectively utilized, which is conducive to the miniaturization and compactness of the airbag 1 and the entire electronic device 300 for measuring blood pressure; at the same time, the airflow in the third fluid pipeline 5 will not interfere with the second fluid pipeline 2, so the detection effect on the pressure sensor 22 is also small.

[0142] In this embodiment, the electronic device for measuring blood pressure includes a measuring assembly, an air bag, and a fluid pipeline, and the first pipe opening and the second pipe opening in the fluid pipeline are oriented in opposite directions; wherein, a portion of the second fluid pipeline is nested inside the first fluid pipeline, and a portion of the second fluid pipeline extends to the inside of the air bag and bends toward one side of the air bag. Thus, when the fluid pump in the electronic device for measuring blood pressure provides fluid to the inside of the air bag, the fluid rushing out of the first pipe opening will flow in a direction away from the second pipe opening, and there is a certain distance between the first pipe opening and the second pipe opening, so the second pipe opening will not be directly impacted by the fluid, and the impact and influence received are relatively small, which can avoid the impact of the fluid impact on the detection of the pressure sensor and has better blood pressure measurement accuracy.

[0143] Scene 4

[0144] When part of the second fluid pipeline extends into the airbag and the first fluid pipeline does not extend into the airbag, the section of the second fluid pipeline extending into the airbag may also extend to a position with a certain distance from the inner wall of the airbag. Fig.18 Schematic diagram of the structure of the fourth electronic device for measuring blood pressure provided in the embodiment of the present application. Fig.18As shown, the electronic device 400 for measuring blood pressure provided in this scenario has the same overall structure, function and working principle as the electronic device for measuring blood pressure in the aforementioned scenario three, and will not be described in detail here. The difference from the aforementioned scenario three is that in the electronic device for measuring blood pressure in this scenario, the first nozzle 301 of the first fluid pipeline 3 is located flush with the inner wall of the airbag 1, and the part of the second fluid pipeline 4 extending into the interior of the airbag 1, the part where the bend is formed is not close to the inner wall of the airbag 1, but has a certain distance from the inner wall of the airbag 1, so that the second nozzle 401 and the inner wall of the airbag 1 will maintain a certain distance.

[0145] Since the first pipe opening 301 does not extend into the airbag 1, but maintains a position flush with the inner wall of the airbag 1, in order to increase the distance between the first pipe opening 301 and the second pipe opening 401, a certain distance can be provided between the second pipe opening 401 and the inner wall of the airbag 1 connected to the fluid pipeline, that is, the first inner wall 11. Fig.19 yes Fig.18 A schematic diagram of the specific structure of the fluid pipeline of the electronic device and the connection area of ​​the airbag. Fig.19 As shown, specifically, in the fourth pipe section 43 extending from the second fluid pipeline 4 to the interior of the airbag 1, after the fourth extension section 432 extends into the interior of the airbag 1, it will extend all the way to a position with a certain distance from the first inner wall 11 of the airbag 1, and the third bending section 433 at the end of the fourth extension section 432 and the third extension section 431 connected to the third bending section 433 will also have a corresponding distance from the inner wall of the airbag 1. At this time, since the first pipe opening 301 is arranged at the inner wall of the airbag 1, a certain distance can be formed between the first pipe opening 301 and the second pipe opening 401. Specifically, compared with the aforementioned scenario three, the distance between the first pipe opening 301 and the second pipe opening 401 will be determined by the length d of the third extension section and the length e of the fourth extension section.

[0146] Optionally, the fourth extension section 432 can extend into the middle area inside the airbag 1, so that the third bending section 433 has a certain distance from the inner walls in all directions of the airbag 1. At this time, the second pipe opening 401 will also be located in the middle area inside the airbag 1, which is far away from the first pipe opening 301, and a more accurate air pressure value can be collected.

[0147] Exemplarily, similar to the aforementioned scenario 2, in this embodiment, the fourth extension section 432 and the first fluid pipeline 3 can be kept parallel or approximately parallel to each other, and a substantially vertical bending angle is formed between the third extension section 431 and the fourth extension section 432 .

[0148] In addition, the third extension section 431 and the fourth extension section 432 may also have other different directions. For example, the fourth extension section 432 may extend in a direction away from the first inner wall 11 to increase the distance between the second pipe opening 401 and the first inner wall 11. It is understood by those skilled in the art that the bending angle between the third extension section 431 and the fourth extension section 432 may be greater than or equal to 90 degrees to form a larger distance between the first pipe opening 301 and the second pipe opening 401.

[0149] In order to prevent the deformation of the airbag 1 from affecting the normal ventilation of the second pipe opening 401, similar to the aforementioned scenario three, as an optional method, the fourth pipe section 43 of the second fluid pipeline 4 located inside the airbag 1 can be a hard pipeline. In this way, even if the airbag 1 compresses the second fluid pipeline 4 due to the reduction of the internal space, the fourth pipe section 43 and the second pipe opening 401 will maintain the original shape and cross-sectional area, thereby maintaining the normal circulation of the gas in the second fluid pipeline 4. In addition, when the fourth pipe section 43 is a hard pipeline, the second pipe opening 401 can also always maintain a distance from the inner wall of the airbag 1 to prevent the position of the second pipe opening 401 from moving. Specifically, the extension section of the second fluid pipeline 4 located inside the airbag 1 can be made of skeleton rubber, or other anti-deformation materials commonly used by those skilled in the art, which are not limited here.

[0150] Optionally, the entire second fluid pipeline 4 can be made of skeleton rubber or other materials with similar properties, so that the second fluid pipeline 4 can be uniformly manufactured and formed, reducing the difficulty of assembly and manufacturing.

[0151] In addition, optionally, the first fluid pipeline 3 can also be made entirely of skeleton rubber or other similar materials mentioned above, so that the first fluid pipeline 3 and the second fluid pipeline 4 can be manufactured through the same process, the manufacturing process is relatively simple, and the cost is low.

[0152] In this embodiment, the electronic device for measuring blood pressure includes a measuring component, an air bag, and a fluid pipeline, and the first pipe opening and the second pipe opening in the fluid pipeline are oriented in opposite directions; a portion of the second fluid pipeline is embedded in the first fluid pipeline, and a portion of the second fluid pipeline extends into the air bag and bends toward one side of the air bag; wherein, the portion of the second fluid pipeline extending into the air bag, where the bending and direction-changing portion occurs, is spaced a certain distance from the inner wall of the air bag, so that the second pipe opening and the inner wall of the air bag are kept at a certain distance. In this way, the second pipe opening is at a greater distance from the first pipe opening, and is less impacted by the airflow, which is conducive to improving the measurement accuracy.

Claims

1. An electronic device for measuring blood pressure, characterized in that: The invention comprises a measuring component, an airbag and a fluid pipeline connected between the measuring component and the airbag; the measuring component comprises a fluid pump, a pressure sensor and a processing unit, the fluid pump and the sensor are both electrically connected to the processing unit, the fluid pump is connected to the airbag through a first fluid pipeline, the pressure sensor is connected to the airbag through a second fluid pipeline, the first fluid pipeline has a first pipe opening connected to the airbag, the second fluid pipeline has a second pipe opening connected to the airbag, the first pipe opening and the second pipe opening are located on the same side of the airbag, and the opening direction of one of the first pipe opening and the second pipe opening is away from the other, so that the first pipe opening and the second pipe opening are far away from each other; One of the first fluid pipeline and the second fluid pipeline forms an outer pipe section, and the other forms an inner pipe section. The outer pipe section is sleeved on the outer side of the inner pipe section, and there is a gap between the outer wall of the inner pipe section and the inner wall of the outer pipe section.

2. The electronic device for measuring blood pressure according to claim 1, characterized in that: At least one of the first fluid conduit and the second fluid conduit has an internal conduit section extending into the interior of the airbag, so that at least one of the first conduit opening and the second conduit opening is located inside the airbag.

3. The electronic device for measuring blood pressure according to claim 2, characterized in that: One of the first pipe opening and the second pipe opening extends into the interior of the airbag and is suspended in the air, and the other is flush with the inner wall of the airbag.

4. The electronic device for measuring blood pressure according to claim 2 or 3, characterized in that: The built-in pipe segment includes a bending segment, and an angle is formed between the pipe segment located before the bending segment and the pipe segment located after the bending segment.

5. The electronic device for measuring blood pressure according to claim 4, characterized in that: The pipe section of the built-in pipe section located between the bending sections and the pipe section located behind the bending section are perpendicular to each other.

6. The electronic device for measuring blood pressure according to any one of claims 2 to 3 and 5, characterized in that: The built-in pipe section is located in the first fluid pipeline, and the second fluid pipeline extends to a position flush with the inner wall of the airbag.

7. The electronic device for measuring blood pressure according to claim 6, characterized in that: The built-in pipe section is a soft pipe section, and the built-in pipe section is in contact with the inner wall of the airbag.

8. The electronic device for measuring blood pressure according to claim 6, characterized in that: The built-in pipe section is a hard pipe section; the built-in pipe section is suspended inside the airbag, and there is a distance between the first pipe opening and the inner wall of the airbag.

9. The electronic device for measuring blood pressure according to claim 8, characterized in that: Each pipe section of the first fluid pipeline is an integrated structure.

10. The electronic device for measuring blood pressure according to any one of claims 2-3 and 5, characterized in that: The built-in pipe section is located in the second fluid pipeline, and the first fluid pipeline extends to a position flush with the inner wall of the airbag.

11. The electronic device for measuring blood pressure according to claim 10, characterized in that: The built-in pipe section is suspended inside the airbag, and there is a distance between the second pipe opening and the inner wall of the airbag; or, The built-in tube section is in contact with the inner wall of the airbag.

12. The electronic device for measuring blood pressure according to claim 11, characterized in that: When the electronic device for measuring blood pressure is worn on a human body, the position of the second tube opening inside the airbag corresponds to the position of the artery of the human body.

13. The electronic device for measuring blood pressure according to any one of claims 11 to 12, characterized in that: The built-in pipe section is a hard pipe section.

14. The electronic device for measuring blood pressure according to claim 13, characterized in that: Each pipe section of the second fluid pipeline is an integrated structure.

15. The electronic device for measuring blood pressure according to any one of claims 1-3, 5, 7-9, 11-12, and 14, characterized in that: It also includes a fluid valve and a third fluid pipeline, wherein a first end of the third fluid pipeline is connected to the fluid valve, and a second end of the third fluid pipeline is used to communicate with the airbag.

16. The electronic device for measuring blood pressure according to claim 15, characterized in that: The second end of the third fluid pipeline is in communication with the first fluid pipeline.

17. The electronic device for measuring blood pressure according to claim 15, characterized in that: At least a portion of the first fluid pipeline is a collapsible soft pipeline, and the second end of the third fluid pipeline is connected to the second fluid pipeline.

18. The electronic device for measuring blood pressure according to any one of claims 1-3, 5, 7-9, 11-12, 14, 16-17, characterized in that: The electronic device for measuring blood pressure also includes a main body and a wristband, wherein the wristband is connected to the main body, the measuring component is arranged inside the shell of the main body, and the airbag is arranged on the wristband.

Images