Blood pressure collection component, sphygmomanometer and blood pressure measurement method

Abstract

Relating to the field of medical device technology, the present application discloses a blood pressure collection component, a sphygmomanometer, and a blood pressure measurement method. The blood pressure collection component includes a cuff, a shell, and a pressure sensor. An airbag component is provided inside the cuff. The airbag component includes a large airbag and a small airbag. The large airbag and the small airbag are selectively connected, and both the large airbag and the small airbag are arranged in a ring-shaped structure. The shell is provided on the cuff, and a connected air pump and a first air valve are provided inside the shell. The first air valve is connected to the large airbag or the small airbag, and the pressure sensor is provided on the shell. The airbag component is pressurized by the air pump. The large airbag and the small airbag continue to maintain selective connection during the pressurization process. The inflation volume of the airbag component is changed under the same pressure to detect the pulse signal. The change value of the pulse signal under the same pressure is compared in real time to obtain the actual blood pressure measurement value of the person being measured, thereby ensuring the accuracy of the test results and the test experience of the person being measured.

Description

Technical Field

[0001] The present application generally relates to the field of medical device technology, and in particular discloses a blood pressure collection component, a blood pressure monitor, and a blood pressure measurement method. Background Art

[0002] Blood pressure is one of the indicators used to analyze circulatory system diseases. Risk analysis based on blood pressure can effectively prevent cardiovascular diseases such as stroke, heart failure, and myocardial infarction. A sphygmomanometer, also known as a blood pressure monitor, is an instrument used to measure blood pressure. Sphygmomanometers mainly include auscultatory and oscillometric methods. Sphygmomanometers are easy to use and offer intuitive readings. Simply turning on the switch automatically initiates the measurement, making them suitable for home use.

[0003] The existing pulse wave sphygmomanometer uses dual-balloon dual-sensor blood pressure measurement technology. When the upstream pressure cuff is decompressed and deflated, the downstream pulse wave sensor ball receives the blood flow signal. It collects pulses through two sensors, which greatly increases the cost of the device. Summary of the Invention

[0004] The purpose of this application is to provide a blood pressure collection component, a sphygmomanometer and a blood pressure measurement method, which solve the technical problem of high device cost while ensuring test accuracy.

[0005] To achieve the above-mentioned invention objectives, this application adopts the following technical solutions:

[0006] In a first aspect, the present application provides a blood pressure collection assembly, comprising:

[0007] A cuff having an airbag assembly disposed therein, the airbag assembly comprising a large airbag and a small airbag, the large airbag and the small airbag being selectively connectable, and both the large airbag and the small airbag being arranged in an annular structure;

[0008] a housing, disposed on the cuff, wherein an air pump and a first air valve are disposed in the housing, wherein the first air valve is in communication with the large air bag or the small air bag; and

[0009] A pressure sensor is arranged in the housing and is used to collect pulse signals.

[0010] According to one embodiment of the present application, a double-vent valve connected to the first air valve is provided in the shell, the double-vent valve is connected to the large air bag through a first connecting pipe, and the double-vent valve is connected to the small air bag through a second connecting pipe.

[0011] According to one embodiment of the present application, the large airbag and the small airbag are arranged side by side.

[0012] According to one embodiment of the present application, the volume ratio of the large airbag to the small airbag is 6:4.

[0013] According to one embodiment of the present application, an electrical control component and a processor electrically connected to the electrical control component are provided in the shell, and the first air valve, the air pump, the dual-vent valve and the pressure sensor are all electrically connected to the electrical control component.

[0014] According to one embodiment of the present application, the electrical component is also electrically connected to a battery.

[0015] According to one embodiment of the present application, the electrical control component is connected to a data port, and the data port is connected to the terminal via a data line.

[0016] In a second aspect, a blood pressure monitor is provided, comprising: the blood pressure collection component described above.

[0017] In a third aspect, a blood pressure measurement method is provided, which is applied to the aforementioned blood pressure acquisition component, and the method comprises:

[0018] Controlling the air pump to pressurize the airbag assembly to a first pressure, controlling the airbag assembly to be at a first volume, and obtaining a first pulse signal;

[0019] controlling the airbag assembly to be in a second volume, the second volume being different from the first volume, obtaining a second pulse signal, wherein an absolute value of a difference between the second pulse signal and the first pulse signal is a pulse fluctuation signal;

[0020] Controlling the air pump to continuously pressurize the airbag assembly, that is, pressurizing from the first pressure to the Nth pressure, and repeating the above operation in this process to obtain N pulse fluctuation signals;

[0021] Each of the pulse fluctuation signals obtains low pressure, average pressure and high pressure according to a preset scheme.

[0022] According to one embodiment of the present application, the preset scheme includes:

[0023] A function curve is drawn for each of the pulse fluctuation signals according to different pressure values ​​during the pressurization process, and an inflection point value in the function curve is obtained. Each inflection point value corresponds to the low pressure, the average pressure and the high pressure in sequence as the pressure value increases.

[0024] According to the blood pressure collection assembly, sphygmomanometer and blood pressure measurement method disclosed in the embodiments of the present application, the blood pressure collection assembly includes a cuff, a housing and a pressure sensor. The cuff is provided with an airbag assembly, the airbag assembly includes a large airbag and a small airbag, the large airbag and the small airbag are selectively connected, and the large airbag and the small airbag are both arranged in a ring structure; the housing is provided on the cuff, and an air pump and a first air valve are provided in the housing, the first air valve is connected to the large airbag or the small airbag. The pressure sensor is provided on the housing, and the pressure sensor is used to collect pulse signals. The air pump pressurizes the interior of the airbag assembly, and the large airbag and the small airbag are continuously selectively connected during this process. The pressure sensor detects the pulse signal in real time. By changing the inflated volume of the airbag assembly under the same pressure and detecting the pulse signal, the change value of the pulse signal under the same pressure is compared in real time to obtain the actual blood pressure measurement value of the measured person. In this way, only one pressure sensor is required for detection to obtain the user's blood pressure value, ensuring the miniaturization structure of the product and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0027] Figure 1 FIG1 is a schematic diagram of the overall structure of a blood pressure collection component according to an exemplary embodiment.

[0028] Figure 2 It is a structural schematic diagram for embodying an electrical control component in a blood pressure acquisition component according to an exemplary embodiment.

[0029] Figure 3 yes Figure 2 A partial enlarged view of part A.

[0030] Figure 4 It is a structural diagram for embodying a voice module in a blood pressure acquisition component according to an exemplary embodiment.

[0031] Figure 5 yes Figure 4 A partial enlarged view of part B.

[0032] Figure 6 FIG. 1 is a flow chart showing a blood pressure measurement method according to an exemplary embodiment.

[0033] The description of the accompanying drawings is as follows:

[0034] 1. Large airbag; 2. Small airbag; 3. Air pump; 4. First air valve; 5. Housing; 6. Dual-vent valve; 7. Pressure sensor; 8. First connecting pipe; 9. Second connecting pipe; 10. Electrical control unit; 11. Battery; 12. Data port; 13. Voice module; 14. Display screen. DETAILED DESCRIPTION

[0035] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0036] It should be noted that, in the specification and claims of this application and the above-mentioned drawings, relational terms such as "first" and "second" are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or specific order or precedence between these entities or operations. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present application described herein can, for example, be implemented in an order other than those illustrated or described herein.

[0037] Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, or any other variants thereof, are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also includes other elements not expressly listed or that are inherent to such process, method, article, or apparatus. For example, a process, method, system, product, or apparatus that includes a list of steps or units is not necessarily limited to those steps or units expressly listed but may include other steps or units not expressly listed or that are inherent to such process, method, product, or apparatus. In the absence of further limitations, an element limited by the phrase "comprising a . . . ." does not preclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0038] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0039] Reference Figure 1-Figure 5 The embodiment of the present disclosure provides a blood pressure collection assembly, including a cuff, a housing 5, and a pressure sensor 7. An airbag assembly is provided inside the cuff, and the airbag assembly includes a large airbag 1 and a small airbag 2. The large airbag 1 and the small airbag 2 can be selectively connected, and both the large airbag 1 and the small airbag 2 are arranged in an annular structure. The housing 5 is provided on the cuff, and an air pump 3 and a first air valve 4 are provided in the housing 5. The first air valve 4 is in communication with the large airbag 1 or the small airbag 2. The pressure sensor 7 is provided in the housing 5 and is used to collect pulse signals.

[0040] During actual use, the person being measured puts the cuff on his arm and pressurizes the interior of the airbag assembly through the air pump 3. The large airbag 1 and the small airbag 2 are continuously and selectively connected during this process, and the pressure sensor 7 detects the pulse signal in real time. By changing the inflation volume of the airbag assembly under the same pressure and detecting the pulse signal, the change value of the pulse signal under the same pressure is compared in real time to obtain the actual blood pressure measurement value of the person being measured. In this way, only one pressure sensor 7 is needed for detection to obtain the user's blood pressure value, ensuring the miniaturization of the product structure and reducing costs. At the same time, compared with the blood pressure measurement method in the prior art, this technical solution does not require the staff to measure by listening, making the test accuracy more accurate. In addition, since the blood pressure measurement in this technical solution can be completed during the pressurization process, it is not necessary to maintain a uniform pressure drop during the pressure relief process of the device as in the prior art, thereby improving the test experience of the person being measured.

[0041] In some embodiments, the large airbag 1 and the small airbag 2 are arranged side by side. By placing the large airbag 1 and the small airbag 2 adjacent to each other in the airbag assembly, the communication between the large airbag 1 and the small airbag 2 is facilitated while also reducing the overall volume of the airbag 2 assembly. Similarly, the large airbag 1 and the small airbag 2 can also be arranged at intervals.

[0042] In some embodiments, the volumes of the large airbag 1 and the small airbag 2 can be the same or different. Specifically, when the volumes of the large airbag 1 and the small airbag 2 are the same, the volume of the airbag assembly when the large airbag 1 and the small airbag 2 are connected is considered to be V, while the volume of the airbag assembly when either the large airbag 1 or the small airbag 2 is pressurized is considered to be V / 2. During blood pressure measurement, the airbag assembly squeezes the subject's artery, and the pulse wave amplitude collected under different airbag assembly pressures varies. Furthermore, the size of the airbag assembly also affects the transmission of the pulse wave signal to varying degrees. Therefore, to ensure the accuracy of blood pressure testing, there should be a significant difference between the volume of the airbag assembly connected to the first air valve 4 and the total volume of the airbag assembly.

[0043] Similarly, on this basis, the applicant conducted experiments using large air bags 1 of different volumes and small air bags 2 of different volumes in order to obtain the optimal value of the volume ratio of the large air bag 1 to the small air bag 2. After a large number of experimental verifications, it was found that if the volume value of the smaller of the large air bag 1 and the small air bag 2 is too small, when it is filled with air, it will cause the pressure on the arm of the person being measured to be too small, and its anti-fluctuation ability will be poor, thus causing inaccurate pressure signal detection. For the sake of convenience of description, the small air bag 2 in the air bag assembly is the smaller of the large air bag 1 and the small air bag 2, while the large air bag 1 is the larger of the large air bag 1 and the small air bag 2. In addition, the first air valve 4 is connected to the small air bag 2; therefore, in order to ensure the accuracy of the pressure signal detection when the small air bag 2 works alone, the volume of the small air bag 2 should be greater than 3V / 10, and correspondingly, the volume of the large air bag 1 should not exceed 7V / 10. In addition, after a large number of experimental verifications, it can be seen that when the volume of the small airbag 2 is within the volume range of 0.35V-0.55V, correspondingly, when the volume of the large airbag 1 is within the volume range of 0.45V-0.65V, the blood pressure value detected by this device at this time has better anti-fluctuation ability, small test error, and more accurate test data.

[0044] Optionally, the volume ratio of the large airbag 1 and the small airbag 2 is 6:4, and the first air valve 4 is connected to the small airbag 2; therefore, when the large airbag 1 and the small airbag 2 are not connected to each other, the air pump 3 is only connected to the small airbag 2, and the air pump 3 can inflate the small airbag 2 to apply pressure to the small airbag 2. Similarly, when the large airbag 1 and the small airbag 2 are connected, the volume of the airbag assembly is V. When only one of the airbag assemblies is connected to the air pump 3, that is, the small airbag 2 is connected to the air pump 3, the volume of the airbag assembly is 2V / 5. In this case, there is a significant difference between the volume of the airbag assembly and the volume of the airbag assembly when the large airbag 1 and the small airbag 2 are connected to each other, so that the difference in the pulse signal obtained by the pressure sensor 7 during detection is also significant, thereby improving the accuracy of the test.

[0045] Reference Figure 1-Figure 5 In some embodiments, a dual-vent valve 6 is disposed within the housing 5 and is in communication with the first air valve 4. The dual-vent valve 6 is in communication with the large air bag 1 via a first connecting tube 8, and is in communication with the small air bag 2 via a second connecting tube 9. The dual-vent valve 6 can selectively connect to either the large air bag 1 or the small air bag 2. Specifically, a first on-off valve and a second on-off valve are disposed within the dual-vent valve 6. The first on-off valve is used to connect or disconnect the first connecting tube 8, and the second on-off valve is used to connect or disconnect the second connecting tube 9. Since the small air bag 2 is constantly inflated during use, only the second on-off valve is disposed within the dual-vent valve 6 to control the connection or disconnection between the dual-vent valve 6 and the large air bag 1.

[0046] In some embodiments, an electronic control unit 10 and a processor electrically connected to the electronic control unit 10 are disposed within the housing 5. The first air valve 4, the air pump 3, the dual-vent valve 6, and the pressure sensor 7 are all electrically connected to the electronic control unit 10. The pressure sensor 7 senses the pressure signal of the airbag assembly and transmits the pressure signal to the processor, which calculates the obtained pressure signal to obtain the blood pressure of the subject.

[0047] Specifically, the first air valve 4 is connected between the air pump 3 and the airbag assembly. The air pump 3 is used to inflate the large airbag 1 and the small airbag 2 in the airbag assembly, and the first air valve 4 is used to deflate the airbag assembly.

[0048] Optionally, the processor includes a micro control unit. Specifically, the processor is an Omron intellisense chip. The pressure sensor 7 can be a PSG010 pressure sensor 7 or a Taiwan Quanlei MPS-3117-006GC pressure sensor for blood pressure monitors.

[0049] In some embodiments, a display screen 14 is mounted on the housing 5. The display screen 14 is electrically connected to the electronic control 10 and is in communication with the processor. The display screen 14 is used to display data processed by the processor. Specifically, the display screen 14 can display the blood pressure value of the person being measured.

[0050] Optionally, the display screen 14 is provided on the side of the housing 5 away from the cuff to facilitate viewing of the display screen 14 by the measurer. Preferably, a through hole is provided in the housing 5 at a position corresponding to the display screen 14, the display screen 14 is installed in the through hole, and the display surface of the display screen 14 is flush with the outer surface of the housing 5, thereby protecting the edge of the display screen 14 through the housing 5. Exemplarily, the display screen 14 is a touch screen 14, and the touch screen 14 adopts a capacitive IPS touch LCD screen of a customized size according to customer requirements. Optionally, a high-definition face recognition camera can also be provided on the display screen 14, and the high-definition face recognition camera adopts a 5-megapixel or 8-megapixel camera module.

[0051] Reference Figure 1-Figure 5 Optionally, the display screen 14 is detachably arranged on the shell 5. Exemplarily, a magnet is provided at a position of the shell 5 corresponding to the display screen 14, and a metal piece for magnetic adsorption with the magnet is provided on the side of the display screen 14 facing away from its own display surface, and a detachable connection is achieved through the magnetic adsorption of the display screen 14 and the shell 5. It should be noted that in order to ensure that the setting of the metal piece does not affect the display of the display screen 14, an insulating piece may be further provided between the display screen 14 and the metal piece. In addition, a buckle may be further provided on the display screen 14, and a card slot is provided on the shell 5, and a detachable connection between the display screen 14 and the shell 5 is achieved through the snap-fit ​​between the buckle and the card slot.

[0052] In some embodiments, the housing 5 may also be provided with a communication module electrically connected to the electronic control unit 10. The communication module may be at least one of a GSM module, a Bluetooth module, and a WiFi module. This module enables communication between the blood pressure collection component and a terminal device, allowing the user to view test data through the terminal device. The WiFi module utilizes a USR-C215 or USR-C322 ultra-low power module, and the GSM module utilizes a VK2217-GPS module or a Huawei EM310 GSM module.

[0053] Optionally, the communication module can also be a voice module 13, which is disposed on the electrical control unit 10 and is in communication with the processor. The voice module 13 is used to receive data processed by the processor and broadcast it via voice, allowing the user to hear the test data without having to watch it, and is convenient for use. Preferably, the voice module 13 is also electrically connected to a speaker, which controls the volume of the voice broadcast by the voice module 13. For example, if the user has poor hearing, the speaker can increase the volume of the voice broadcast so that the user can hear the test data, thereby meeting the needs of different users.

[0054] Optionally, the electrical control unit 10 is also provided with a remote diagnosis and treatment module electrically connected to the processor, and the remote diagnosis and treatment module is used to collect data obtained by the processor and transmit it to a remote diagnosis and treatment platform, and the remote diagnosis and treatment platform is used to provide remote disease monitoring and audiological consultation services.

[0055] In some embodiments, the shell 5 is buckled onto the cuff so that a receiving cavity is formed between the shell 5 and the cuff, and the air pump 3, the first air valve 4, the electrical control unit 10 and the dual-vent valve 6 are arranged in the receiving cavity. The shell 5 plays a protective role and can also hide the air path of the air connection and the wires of the electrical connection to ensure the overall aesthetics of the device.

[0056] Reference Figure 1-Figure 5 In some embodiments, a battery 11 is provided in the housing 5 and is electrically connected to the electronic control unit 10. By providing the battery 11 in the housing 5, the blood pressure collection component can provide its own power supply without the need for an external power supply device, which is convenient for users to use.

[0057] Optionally, the battery 11 includes a rechargeable lithium battery 11 or a button battery 11. When the battery 11 is a rechargeable lithium battery 11, the electronic control 10 is provided with a charging terminal for connecting to the lithium battery 11, and the charging terminal protrudes from the housing 5 to connect with an external component to achieve the charging effect of the lithium battery 11.

[0058] Optionally, the battery 11 is detachably mounted on the housing 5 . By detachably mounting the battery 11 in the housing 5 , the lithium battery 11 can be easily repaired and replaced.

[0059] In some embodiments, the electrical control unit 10 is connected to a data port 12, which is used to connect to a power supply device. An opening is provided at a position corresponding to the data port 12 in the shell 5, and the data port 12 protrudes from the shell 5 through the opening; therefore, power can be transmitted to the electrical control unit 10 by electrical connection through the data port 12. At this time, there is no need to set a power supply unit inside the shell 5, thereby reducing the volume of the blood pressure collection component.

[0060] Optionally, the data port 12 can also be connected to a terminal via a data cable to transmit data processed by the processor to the terminal device, and the terminal device can display and store the data. It should be noted that in actual use, the data port 12 is connected to a multi-head data cable, so that one data port 12 can be electrically connected to at least one terminal device at the same time.

[0061] Reference Figure 1-Figure 5 The embodiment of the present disclosure also provides a blood pressure meter, which includes the blood pressure collection component described above.

[0062] Reference Figures 1-6 The present disclosure also provides a blood pressure measurement method, which is applied to the blood pressure acquisition component as described in the above embodiment. The method includes:

[0063] S101: Controlling the air pump 3 to pressurize the airbag assembly to a first pressure, controlling the airbag assembly to be in a first volume, and obtaining a first pulse signal;

[0064] S102: Controlling the airbag assembly to be in a second volume, where the second volume is different from the first volume, obtaining a second pulse signal, where the absolute value of the difference between the second pulse signal and the first pulse signal is a pulse fluctuation signal;

[0065] S103: Controlling the air pump 3 to continuously pressurize the airbag assembly, that is, pressurizing from the first pressure to the Nth pressure, repeating the above operation in this process to obtain N pulse fluctuation signals;

[0066] S104: The pulse fluctuation signals are converted into low pressure, average pressure and high pressure according to a preset scheme.

[0067] Specifically, the first volume can be the total volume of the airbag assembly or the volume value of the large airbag 1 and the small airbag 2 that are continuously connected to the first air valve 4. For the convenience of description, in this embodiment, the first air valve 4 is continuously connected to the small airbag 2; therefore, the first volume can be the total volume of the airbag assembly or the volume value of the small airbag 2. Similarly, when the first volume is the total volume of the airbag assembly, the second volume is the volume value of the small airbag 2; when the first volume is the volume value of the small airbag 2, the second volume is the total volume value of the airbag assembly.

[0068] For example, in this embodiment, the first volume is the total volume of the airbag assembly, and the second volume is the volume of the small airbag 2. Specifically, the blood pressure testing method involves connecting the air pump 3 to both the large airbag 1 and the small airbag 2 via the dual-vent valve 6. The air pump 3 is controlled to pressurize the airbag assembly to a first pressure and then stops inflating. The pulse signal at this point is detected via the pressure sensor 7, which is referred to as the first pulse signal. Subsequently, the dual-vent valve 6 is controlled to connect only to the small airbag 2, and the pulse signal at this point is detected via the pressure sensor 7, which is referred to as the second pulse signal. Based on the first and second pulse signals, a pulse fluctuation signal at the first pressure is obtained. Specifically, the pulse fluctuation signal is the absolute value of the difference between the first and second pulse signals.

[0069] Subsequently, the dual-vent valve 6 is controlled to be connected to both the large airbag 1 and the small airbag 2 again, and the airbag assembly is pressurized by the air pump 3, from the first pressure to the second pressure and the pressurization is stopped, and the pulse signal at this time is detected by the pressure sensor 7. Then, the dual-vent valve 6 is controlled to be connected to only the small airbag 2 again, and the pulse signal at this time is detected by the pressure sensor 7, thereby obtaining a second pulse fluctuation signal.

[0070] By the same token, the air pump 3 is controlled to continuously pressurize the airbag assembly, that is, from the first pressure to the Nth pressure. The above operation is repeated in this process to obtain N pulse fluctuation signals, and the N pulse fluctuation signals obtained are analyzed according to a preset scheme to obtain the low pressure, average pressure and high pressure of the measured person.

[0071] Through this testing method, the user can obtain blood pressure test data while the blood pressure collection component is continuously pressurized, and can quickly deflate the air after the test. Compared to the existing technology of detecting blood pressure data during the deflation process, this testing method greatly shortens the test time of the user and improves the test experience. At the same time, there is no need to control the uniform speed stability during the pressure release process. Moreover, this testing method performs full-process testing during the pressurization of the airbag component, improving the accuracy of the test data. In addition, only one pressure sensor 7 is required to complete the blood pressure test, reducing the use of components within the device and reducing the cost of the device.

[0072] Specifically, the preset scheme includes plotting a function curve for each pulse fluctuation signal according to different pressure values ​​during the pressurization process, obtaining inflection point values ​​in the function curve, wherein each inflection point value corresponds to the low pressure, the average pressure, and the high pressure, respectively, as the pressure value increases. Specifically, a function curve is plotted for the multiple pulse fluctuation signal values ​​within a coordinate system with the pressure value on the horizontal axis and the signal value on the vertical axis. Based on actual test data, it is known that the function curve plotted for the multiple pulse fluctuation signals is typically a parabola.

[0073] Extensive experimental data indicates that when the pressure within the airbag assembly is below the low pressure, the airbag assembly has little effect on pulse transmission. Obtaining the inflection point values ​​in the function curve, i.e., obtaining the inflection point values ​​in the parabola, each corresponds to the low pressure, average pressure, and high pressure, respectively. Specifically, the applicant compresses the artery using the airbag assembly. The pulse wave amplitudes collected under different pressures of the airbag assembly vary. Furthermore, the degree to which the airbag assembly transmits the pulse wave signal varies when the airbag assembly is in different volumes. Specifically, the larger the volume of the airbag assembly, the greater its absorption of the pulse, resulting in a smaller pulse amplitude, and vice versa, which in turn causes changes in the pulse amplitude collected by the blood pressure collection assembly.

[0074] When the pressure of the airbag assembly is at low pressure, the airbag assembly has little effect on the conduction of the pulse. The pulses measured when the large airbag 1, the small airbag 2, or the large airbag 1 and the small airbag 2 are connected in the airbag assembly are almost the same. When the pressure in the airbag assembly gradually rises and exceeds the low pressure, the airbag assembly compresses the tester's blood vessels, causing blood flow to be obstructed, and the airbag assembly's conduction effect on the pulse begins to increase. Under the same pressure, the pulse collected by the small airbag 2 and the pulse collected when the large airbag 1 and the small airbag 2 are connected begin to differ; when the pressure value of the airbag assembly continues to rise and reaches the average pressure, the airbag assembly's effect on the pulse The pulse transmission effect reaches its maximum, and the difference between the pulse collected by small airbag 2 and the pulse collected when large airbag 1 and small airbag 2 are connected is the largest. The pulse amplitudes collected by the airbag assembly under different connection methods show the greatest difference. When the pressure value of the airbag assembly continues to rise and exceeds the high pressure, the blood vessel is compressed to complete closure. The pulse signal collected by the airbag assembly is simply the blood pressure upstream of the blood vessel transmitted to the airbag assembly through the blood vessel wall and muscle components. Therefore, the pulse signal collected by small airbag 2 and the pulse signal collected when large airbag 1 and small airbag 2 are connected are very weak, and the difference between the two is close to zero. Therefore, by comparing the difference between the pulse signals collected by small airbag 2 and the pulse signals collected when large airbag 1 and small airbag 2 are connected under different pressure conditions during the process of increasing the pressure of the airbag assembly, the low pressure, mean pressure, and high pressure of blood pressure can be obtained.

[0075] The foregoing is merely a specific embodiment of the present application, which enables those skilled in the art to understand or implement the present application. Various modifications and variations to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but shall conform to the widest scope consistent with the principles and novel features of the present application.

Claims

1. A blood pressure collection component, characterized in that: include: A cuff having an airbag assembly disposed therein, wherein the airbag assembly comprises a large airbag (1) and a small airbag (2), wherein the large airbag (1) and the small airbag (2) are selectively connectable, and the large airbag (1) and the small airbag (2) are both arranged in an annular structure; A housing (5) is provided on the cuff, wherein an air pump (3) and a first air valve (4) are provided in the housing (5), and the first air valve (4) is in communication with the large air bag (1) or the small air bag (2); and A pressure sensor (7) is disposed in the housing (5), and the pressure sensor (7) is used to collect a pulse signal; Wherein, a double vent valve (6) in communication with the first air valve (4) is provided in the housing (5); the double vent valve (6) is in communication with the large air bag (1) via a first connecting pipe (8); and the double vent valve (6) is in communication with the small air bag (2) via a second connecting pipe (9); Wherein, the volume ratio of the large airbag (1) to the small airbag (2) is 6:4; wherein the air pump (3) is controlled to pressurize the airbag assembly to a first pressure, the airbag assembly is controlled to be in a first volume, and a first pulse signal is obtained; controlling the airbag assembly to be in a second volume, the second volume being different from the first volume, obtaining a second pulse signal, wherein an absolute value of a difference between the second pulse signal and the first pulse signal is a pulse fluctuation signal; When the first volume is the total volume of the airbag assembly, the second volume is the volume value of the small airbag (2).

2. The blood pressure collection assembly according to claim 1, wherein: The large airbag (1) and the small airbag (2) are arranged side by side.

3. The blood pressure collection assembly according to claim 1, wherein: An electric control unit (10) and a processor electrically connected to the electric control unit (10) are provided in the housing (5); the first air valve (4), the air pump (3), the dual-vent valve (6) and the pressure sensor (7) are all electrically connected to the electric control unit (10).

4. The blood pressure collection assembly according to claim 3, wherein: The electrical control unit (10) is also electrically connected to a battery (11).

5. The blood pressure collection assembly according to claim 3, wherein: The electric control unit (10) is connected to a data port (12), and the data port (12) is connected to a terminal via a data line.

6. A blood pressure monitor, characterized in that: include: A blood pressure collection assembly according to any one of claims 1 to 5.

7. A blood pressure measurement method, characterized in that: Applied to the blood pressure collection assembly according to any one of claims 1 to 5, the method comprises: Controlling the air pump (3) to pressurize the airbag assembly to a first pressure, controlling the airbag assembly to be in a first volume, and obtaining a first pulse signal; controlling the airbag assembly to be in a second volume, the second volume being different from the first volume, obtaining a second pulse signal, wherein an absolute value of a difference between the second pulse signal and the first pulse signal is a pulse fluctuation signal; Controlling the air pump (3) to continuously pressurize the airbag assembly, that is, pressurizing from the first pressure to the Nth pressure, repeating the above operation in this process to obtain N pulse fluctuation signals; Each of the pulse fluctuation signals obtains low pressure, average pressure and high pressure according to a preset scheme.

8. The blood pressure measurement method according to claim 7, wherein: The preset scheme includes: A function curve is drawn for each of the pulse fluctuation signals according to different pressure values ​​during the pressurization process, and an inflection point value in the function curve is obtained. Each inflection point value corresponds to the low pressure, the average pressure and the high pressure in sequence as the pressure value increases.

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