Dynamic blood pressure monitoring device based on wireless data transmission

Abstract

The utility model belongs to the technical field of medical instruments, particularly relates to an ambulatory blood pressure monitoring device based on wireless data transmission, and provides the following scheme aiming at the problem of inaccurate measurement data caused by cuff loosening, large measurement interference and poor comfort in the long-term wearing process of the existing device: the ambulatory blood pressure monitoring device comprises a main body bandage and a control box. An anti-loosening pre-tightening unit and a double-layer air bag unit are arranged in the main body bandage; the anti-loosening pre-tightening unit comprises a plurality of memory alloy strips. The memory alloy strips can be uniformly contracted after being electrified so as to intelligently tighten the bandage. The double-layer air bag unit comprises a buffering air bag which always keeps diastolic pressure and a monitoring air bag which works at regular systolic pressure, dynamic looseness prevention is achieved through a memory alloy strip, continuous comfortable attachment and accurate intermittent measurement are considered through the independent double-air-bag design, and pressure interference is avoided through double-air-path independent control.

Description

Technical Field

[0001] This utility model relates to a blood pressure monitoring device, specifically a dynamic blood pressure monitoring device based on wireless data transmission, belonging to the field of medical device technology. Background Technology

[0002] Ambulatory blood pressure monitoring (ABPM) is crucial for the long-term management of hypertension, as it automatically and periodically measures blood pressure during daily activities or sleep, providing a more accurate reflection of blood pressure fluctuations. However, current ABPM devices still have significant shortcomings in ensuring long-term comfort, measurement signal accuracy, and intelligent maintenance of cuff fit.

[0003] For example, a blood pressure monitoring device disclosed in CN120323945A has a cuff comprising an adjustment bladder and a detection bladder. The detection bladder is pushed towards the arm to achieve a tight fit by adjusting the inflation of the adjustment bladder. While this solution improves ease of use, the two bladders are connected through the same inflation component, posing a risk of pressure interference. Furthermore, the pushing-type tightening only applies to the initial stage before measurement and cannot address cuff loosening caused by limb movement, muscle relaxation, or fabric deformation after prolonged wear. Once loosened, measurement accuracy will significantly decrease. Another example is a rapid arm-worn blood pressure acquisition device disclosed in CN105193399A, which uses a quick-fit cuff composed of a shape-memory metal spring and a covering layer, utilizing the automatic memory capability of the shape-memory metal for rapid wear. While this technology incorporates shape memory metal to improve ease of wear, the core function of its shape memory metal spring is to achieve an initial "click-and-fit" fit. The force it generates is fixed and passive, lacking the ability to dynamically, actively, and repeatedly adjust based on cuff loosening during the monitoring period. This fails to address the need for continuous anti-loosening during long-term dynamic monitoring. In summary, existing technologies either focus on the ease of initial tightening while lacking long-term dynamic anti-loosening capabilities, or only address the wearing speed issue without maintaining optimal measurement fit. Furthermore, traditional single-airbag structures require frequent overall inflation and deflation during dynamic monitoring, resulting in intense pressure and disturbance that severely impacts user experience, especially sleep quality during nighttime monitoring. Utility Model Content

[0004] This invention provides a dynamic blood pressure monitoring device based on wireless data transmission to solve the problem of inaccurate measurement data caused by cuff loosening, large measurement interference, and poor comfort during long-term wear of existing devices.

[0005] The present invention achieves the above objectives through the following technical solution: a dynamic blood pressure monitoring device based on wireless data transmission, comprising a main strap and a control box connected to the strap, wherein the main strap is provided with an anti-loosening pre-tightening unit and a double-layer airbag unit; the double-layer airbag unit includes a buffer airbag and a monitoring airbag, wherein the buffer airbag is always kept in a diastolic pressure inflated state during the period when the device is strapped, and the monitoring airbag is kept in a systolic pressure inflated state during the period when the device is performing timed measurements.

[0006] The anti-loosening pre-tightening unit includes multiple shape memory alloy strips. When the shape memory alloy strips are not energized, they are in a relaxed state. When the shape memory alloy strips are energized and heated, they are in a state of uniform shrinkage phase change along their length, utilizing the thermal phase change characteristics of the shape memory alloy strips.

[0007] The control box integrates a buffer air pump and a monitoring air pump. The outlet of the buffer air pump is connected to the buffer airbag, and the outlet of the monitoring air pump is connected to the monitoring airbag. The control box is wirelessly connected to the peripheral terminal.

[0008] As a further embodiment of this utility model: the main strap includes an outer fabric layer and a skin-friendly inner layer, the edges of the outer fabric layer and the skin-friendly inner layer are tightly and fixedly connected, and the outer fabric layer and the skin-friendly inner layer are wrapped around the outside of the buffer airbag and the monitoring airbag which are in an upper and lower layered shape.

[0009] As a further improvement of this utility model: a honeycomb isolation net is provided between the buffer airbag and the monitoring airbag, and the outer edge of the honeycomb isolation net is fixedly clamped at the edge joint of the outer fabric layer and the skin-friendly inner layer.

[0010] As a further embodiment of this utility model: the control box includes an outer box body, a battery and a circuit board are fixedly connected inside the outer box body, and a wireless communication module and a microprocessor are also integrated on the circuit board body. A touch screen is embedded in the upper box surface of the outer box body. The battery is electrically connected to each electrical component, and the microprocessor is signal connected to each electrical component.

[0011] As a further improvement of this utility model: the buffer air pump is installed inside the outer box, the buffer air pump and the buffer airbag are connected by a buffer inflation tube, a buffer pressure sensor is fixedly connected inside the buffer airbag, and an electromagnetic vent valve is fixedly connected to the body of the buffer airbag.

[0012] As a further embodiment of this utility model: the monitoring air pump is installed inside the outer box, a monitoring inflation tube is connected between the monitoring air pump and the monitoring airbag, and a monitoring pressure sensor is fixedly connected inside the monitoring airbag.

[0013] As a further improvement of this utility model: the monitoring inflation tube is connected to a three-way solenoid valve on the tube body inside the outer box, and the three-way solenoid valve is also connected to a pressure relief tube. The other port of the pressure relief tube is located directly above the circuit board, and several heat dissipation holes are opened on the side wall of the outer box.

[0014] As a further improvement of this utility model: shape memory alloy strips are woven into the outer layer of the fabric along the length of the main strap, and multiple shape memory alloy strips are distributed in parallel at equal intervals.

[0015] As a further improvement of this utility model: the two ends of the main strap are respectively provided with a Velcro closure and a Velcro closure, and the Velcro closure is fixedly connected to the outer layer of the fabric, and the Velcro closure is fixedly connected to the skin-friendly inner layer.

[0016] The beneficial effects of this utility model are:

[0017] 1. This utility model is equipped with a main strap and a control box. The main strap contains an anti-loosening pre-tightening unit and a double-layer airbag unit. The double-layer airbag unit includes a buffer airbag and a monitoring airbag. The buffer airbag is always inflated at diastolic pressure during the binding period, while the monitoring airbag is inflated at systolic pressure during the timed measurement period. By integrating the buffer airbag and monitoring airbag with independent functions and completely different working modes, the buffer airbag can provide constant and gentle diastolic pressure support during the binding period, which greatly improves the comfort of wearing for a long time. At the same time, it ensures that the monitoring airbag only works during a short measurement cycle, which greatly reduces the frequency and intensity of disturbance to the user. It completely eliminates the problem of wearing without feeling and easy displacement caused by the complete loosening of traditional cuffs after deflation. It also avoids the strong discomfort and sleep disturbance caused by frequent and violent overall inflation and deflation. Since the basic fit is completed by the buffer airbag, the monitoring airbag does not need to inflate from zero to tighten the arm. It only needs to add pressure to the required measurement level on the basis of the diastolic pressure provided by the buffer airbag, which shortens the single measurement time.

[0018] 2. The anti-loosening pre-tightening unit of this utility model includes multiple shape memory alloy strips. When not energized, the shape memory alloy strips are in a relaxed state. When energized and heated, they undergo a uniform contraction phase change along their length. Utilizing the thermal phase change characteristics of the shape memory alloy strips, the relaxed state when not energized ensures the softness and comfort of the main strap during initial and daily wear, preventing unnecessary pressure on the user. Furthermore, when tightening is required, the phase change contraction triggered by the energized shape memory alloy strips occurs uniformly along the length, ensuring that the tightening force applied to the limb is a continuous and evenly distributed circumferential force, avoiding localized excessive tightness or pressure points, and also ensuring a fully optimized fit between the double-layer airbag unit and the arm.

[0019] 3. The control box of this utility model integrates a buffer air pump and a monitoring air pump. The outlet of the buffer air pump is connected to the buffer airbag, and the outlet of the monitoring air pump is connected to the monitoring airbag. The control box is wirelessly connected to the external terminal. The two independently operating buffer air pumps and monitoring air pumps avoid gas exchange and pressure crosstalk between the buffer airbag and the monitoring airbag, ensuring that the monitoring airbag is not affected by the pressure fluctuation of the buffer airbag. In addition, the dual air pump design also ensures that the failure of one air path will not cause the entire device to become unusable. The wireless connection between the control box and the external terminal enables wearable and freely mobile monitoring. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the outer side structure of the present invention in its flat state;

[0021] Figure 2 This is a schematic diagram of the inner side structure of the present invention in its flat state;

[0022] Figure 3 This is a schematic cross-sectional view of the present invention.

[0023] Figure 4 This is a schematic diagram of the disassembled structure in cross-sectional view of this utility model;

[0024] Figure 5 This is a schematic diagram of the connection structure between the shape memory alloy strip and the outer layer of the fabric according to this utility model;

[0025] Figure 6 This is a schematic diagram of the internal structure of the control box of this utility model;

[0026] Figure 7 This is a schematic diagram of the internal structure of the buffer airbag of this utility model;

[0027] Figure 8 This is a schematic diagram of the internal structure of the monitoring airbag of this utility model.

[0028] In the diagram: 1. Main strap; 11. Outer fabric layer; 12. Skin-friendly inner layer; 2. Control box; 21. Outer box; 22. Touch screen; 23. Buffer air pump; 24. Monitoring air pump; 25. Buffer inflation tube; 26. Monitoring inflation tube; 27. Three-way solenoid valve; 28. Pressure relief tube; 29. ​​Circuit board; 210. Microprocessor; 211. Wireless communication module; 212. Battery; 213. Heat dissipation hole; 3. Velcro; 4. Velcro; 5. Memory alloy strip; 6. Buffer airbag; 61. Buffer pressure sensor; 62. Electromagnetic pressure relief valve; 7. Honeycomb isolation mesh; 8. Monitoring airbag; 81. Monitoring pressure sensor. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Example 1

[0031] like Figures 1 to 8 As shown, a dynamic blood pressure monitoring device based on wireless data transmission includes a main strap 1 and a control box 2 connected to the strap. The main strap 1 contains an anti-loosening pre-tensioning unit and a double-layer airbag unit. The double-layer airbag unit includes a buffer airbag 6 and a monitoring airbag 8. The buffer airbag 6 maintains diastolic pressure inflation during the device's strapping period, while the monitoring airbag 8 maintains systolic pressure inflation during timed measurements. By integrating the buffer airbag 6 and the monitoring airbag 8, which have independent functions and distinct operating modes, the buffer airbag 6 provides constant and gentle diastolic pressure throughout the strapping period. The pressure support greatly improves the comfort of wearing for a long time, while ensuring that the monitoring airbag 8 only works during a short measurement cycle, which greatly reduces the frequency and intensity of disturbance to the user. It completely eliminates the problem of wearing without feeling and easy displacement caused by the complete loosening of the traditional cuff after deflation. At the same time, it avoids the strong discomfort and sleep disturbance caused by frequent and violent overall inflation and deflation. Since the basic fit has been completed by the cushioning airbag 6, the monitoring airbag 8 does not need to inflate from zero to wrap the arm tightly. It only needs to add pressure to the required level of measurement on the basis of the diastolic pressure provided by the cushioning airbag 6, which shortens the single measurement time.

[0032] The anti-loosening pretensioning unit includes multiple shape memory alloy strips 5. When not energized, the shape memory alloy strips 5 are in a relaxed state. When energized and heated, they undergo a uniform contraction phase change along their length. Utilizing the thermal phase change characteristics of the shape memory alloy strips 5, the relaxed state when not energized ensures the softness and comfort of the main strap 1 during initial and daily wear, preventing unnecessary pressure on the user. Secondly, when tightening is required, the phase change contraction triggered by the energized shape memory alloy strips 5 occurs uniformly along their length, ensuring that the tightening force applied to the limb is a continuous and evenly distributed circumferential force, avoiding localized excessive tightness or pressure points, and also ensuring a fully optimized fit between the dual-layer airbag unit and the arm.

[0033] The control box 2 integrates a buffer air pump 23 and a monitoring air pump 24. The outlet of the buffer air pump 23 is connected to the buffer airbag 6, and the outlet of the monitoring air pump 24 is connected to the monitoring airbag 8. The control box 2 is wirelessly connected to an external terminal. The two independently operating buffer air pumps 23 and 24 avoid gas exchange and pressure crosstalk between the buffer airbag 6 and the monitoring airbag 8, ensuring that the monitoring airbag 8 is not affected by pressure fluctuations in the buffer airbag 6. In addition, the dual air pump design ensures that a failure in one air path will not render the entire device unusable. The wireless connection between the control box 2 and the external terminal enables wearable, mobile monitoring. It should be noted that the buffer air pump 23 can use a low-power, intermittent micro-inflation mode to maintain a constant diastolic pressure, which is quiet and energy-efficient. The monitoring air pump 24 is optimized for rapid and accurate measurement needs.

[0034] Example 2

[0035] Improvements based on Example 1:

[0036] like Figures 1 to 5 As shown, the main strap 1 includes an outer fabric layer 11 and a skin-friendly inner layer 12. The edges of the outer fabric layer 11 and the skin-friendly inner layer 12 are tightly and fixedly connected. The outer fabric layer 11 and the skin-friendly inner layer 12 are wrapped around the outside of the layered buffer airbag 6 and monitoring airbag 8. The outer fabric layer 11, as the part in contact with the outside world, can prevent the internal buffer airbag 6, monitoring airbag 8 and shape memory alloy strip 5 from being damaged by external friction, scratches or liquid splashes. The skin-friendly inner layer 12 ensures skin comfort during long-term wear. The tight connection between the two at the edge joints forms a closed and secure cavity, which safely encapsulates the buffer airbag 6 and monitoring airbag 8, preventing them from moving or wrinkling inside, and ensuring uniform pressure transmission. It should be noted that the outer fabric layer 11 includes, but is not limited to, nylon or polyester fiber; the skin-friendly inner layer 12 includes, but is not limited to, pure cotton fabric or medical degreased cotton gauze.

[0037] Furthermore, a honeycomb isolation net 7 is provided between the buffer airbag 6 and the monitoring airbag 8. The outer edge of the honeycomb isolation net 7 is fixedly clamped at the edge joint of the outer fabric layer 11 and the skin-friendly inner layer 12. The honeycomb isolation net 7 establishes an isolation barrier between the two airbags. Its honeycomb porous structure can completely separate the two airbags, forming two independent chambers, avoiding possible squeezing deformation interference caused by direct contact between the two airbags. On the other hand, the honeycomb structure itself has good structural strength, which can effectively resist the constant pressure of the buffer airbag 6, prevent it from squeezing and encroaching on the space of the monitoring airbag 8, and ensure that the monitoring airbag 8 can expand evenly according to the predetermined shape when inflated, thereby obtaining a regular and accurate pulse wave signal.

[0038] like Figure 1 , Figure 3 , Figure 6 , Figure 7 and Figure 8 As shown, the control box 2 includes an outer box 21, inside which a battery 212 and a circuit board 29 are fixedly connected. The circuit board 29 also integrates a wireless communication module 211 and a microprocessor 210. A touch screen 22 is embedded in the upper surface of the outer box 21. The battery 212 is electrically connected to each electrical component, and the microprocessor 210 is signal connected to each electrical component. It should be noted that the control box 2 can adopt the circuit integration and mounting part involved in the portable non-invasive blood pressure monitoring device disclosed in announcement number CN205758539U.

[0039] Furthermore, the buffer air pump 23 is installed inside the outer casing 21. A buffer inflation tube 25 connects the buffer air pump 23 and the buffer airbag 6. A buffer pressure sensor 61 is fixedly connected inside the buffer airbag 6. An electromagnetic vent valve 62 is fixedly connected to the body of the buffer airbag 6. The buffer pressure sensor 61 is fixedly connected inside the buffer airbag 6 and can directly monitor the actual pressure inside the airbag and feed the pressure signal back to the microprocessor 210 in the control box 2. When the pressure is lower than the target value due to changes in ambient temperature or slight leakage, the microprocessor 210 instructs the buffer air pump 23 to start and replenish a small amount of air into the buffer airbag 6 through the buffer inflation tube 25. If the pressure rises abnormally and exceeds the target value for some reason, the electromagnetic vent valve 62 can be controlled to open to release a small amount of pressure, maintain a constant pressure inside the buffer airbag 6, and avoid loss of fit due to insufficient pressure or pressure on the arm due to excessive pressure.

[0040] Furthermore, the monitoring air pump 24 is installed inside the outer casing 21, and a monitoring inflation tube 26 is connected between the monitoring air pump 24 and the monitoring airbag 8. A monitoring pressure sensor 81 is fixedly connected inside the monitoring airbag 8. The monitoring pressure sensor 81 is built into the monitoring airbag 8 and can directly sense the tiny pressure oscillations caused by arterial pulsation during the pressurization process of the monitoring airbag 8, avoiding the adverse effects of signal delay, pipeline deformation noise and pressure loss, and ensuring that the collected pulse wave signal is the most authentic.

[0041] Furthermore, the inflation tube 26, located inside the outer casing 21, is connected to a three-way solenoid valve 27, which is also connected to a pressure relief tube 28. The other end of the pressure relief tube 28 is located directly above the circuit board 29. Several heat dissipation holes 213 are provided on the side wall of the outer casing 21. After the blood pressure measurement is completed, the microprocessor 210 can instruct the three-way solenoid valve 27 to switch the path, so that the gas in the monitoring airbag 8 is not slowly released in reverse through the monitoring air pump 24, but is quickly discharged directly through the pressure relief tube 28, achieving an instantaneous drop in the pressure of the monitoring airbag 8. This not only shortens the total time of a single measurement and reduces the discomfort time of continuous pressure on the user, but also, by placing the outlet of the pressure relief tube 28 directly above the circuit board 29, the discharged gas can help remove some of the heat generated during circuit operation. Together with the heat dissipation holes 213 on the side wall of the outer casing, this helps maintain the microprocessor 210 and other components at a suitable temperature.

[0042] like Figure 1 , Figure 2 and Figure 5 As shown, the shape memory alloy strip 5 is woven into the outer layer 11 of the fabric along the length of the main strap 1. Multiple shape memory alloy strips 5 are distributed in parallel and at equal intervals. The weaving method makes the shape memory alloy strip 5 tightly bonded to the textile fibers, and the stress transmission is more evenly distributed when under force. The parallel and evenly distributed shape memory alloy strips 5 can evenly apply the tightening force to the entire width and circumference of the armband, avoiding the marks or local pressure that may be caused by a single strip or uneven distribution, and ensuring the comfort of the wearer's arm.

[0043] Furthermore, the two ends of the main strap 1 are respectively provided with Velcro 3 and Velcro 4, and Velcro 3 is fixedly connected to the outer fabric layer 11, and Velcro 4 is fixedly connected to the skin-friendly inner layer 12. The armband can be easily put on and taken off with one hand, and the length can be adjusted in a wide range of stepless manner to meet the personalized needs of users with different arm circumferences. This ensures that the armband is tight enough to prevent slipping when worn initially, but not too tight to cause discomfort.

[0044] Working principle: When wearing it, the user wraps the main strap 1 around the upper arm and uses the Velcro 3 and Velcro 4 to complete the initial fixation. At this time, the multiple memory alloy strips 5 woven in the outer layer 11 of the fabric are in a loose state without power, ensuring comfortable and pressure-free wearing.

[0045] After wearing, the microprocessor 210 in the control box 2 first instructs the buffer air pump 23 to work, and inflates the outer buffer airbag 6 with gas through the buffer inflation tube 25 until the built-in buffer pressure sensor 61 detects that the pressure has reached the preset constant diastolic pressure value and feeds it back to the microprocessor 210. Then it enters the closed-loop maintenance state. The microprocessor 210 dynamically maintains the diastolic pressure by controlling the micro-inflation of the buffer air pump 23 or the opening of the electromagnetic deflator 62, so that the buffer airbag 6 can continuously provide a soft and comfortable fit.

[0046] When the preset blood pressure measurement time is reached, the monitoring process is started. If the device is loose at this time, the microprocessor 210 can send a pulse current to the shape memory alloy strip 5. The shape memory alloy strip 5 heats up and undergoes a phase change, shrinking uniformly along its length, thereby driving the entire main strap 1 to generate a uniform radial tightening force and maintain the tightened shape. At the same time, the microprocessor 210 controls the monitoring air pump 24 to quickly inflate the inner monitoring airbag 8 through the monitoring inflation tube 26. The monitoring pressure sensor 81 located inside collects the pressure oscillation signal generated by arterial pulsation in real time and transmits it to the microprocessor 210 for analysis and calculation to obtain the blood pressure value.

[0047] After the measurement is completed, the microprocessor 210 switches the passage of the three-way solenoid valve 27, so that the systolic pressure gas in the monitoring airbag 8 is quickly discharged through the pressure relief pipe 28. The discharged airflow will help to remove some of the heat generated during the operation of the circuit. Together with the heat dissipation holes 213 opened on the side wall of the outer box, it helps to maintain the microprocessor 210 and other components at a suitable temperature.

[0048] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0049] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A dynamic blood pressure monitoring device based on wireless data transmission, comprising a main strap (1) and a control box (2) connected to the strap, characterized in that: The main strap (1) is provided with an anti-loosening pre-tightening unit and a double-layer airbag unit inside the strap; The dual-layer airbag unit includes a buffer airbag (6) and a monitoring airbag (8). The buffer airbag (6) remains inflated at diastolic pressure during the period when the device is strapped in place, and the monitoring airbag (8) remains inflated at systolic pressure during the period when the device is in timed measurement. The anti-loosening pre-tightening unit includes multiple shape memory alloy strips (5). When the shape memory alloy strips (5) are not energized, they are in a relaxed state. When the shape memory alloy strips (5) are energized and heated, they are in a state of uniform shrinkage phase change along their length. The control box (2) integrates a buffer air pump (23) and a monitoring air pump (24). The air outlet of the buffer air pump (23) is connected to the buffer airbag (6), and the air outlet of the monitoring air pump (24) is connected to the monitoring airbag (8). The control box (2) is wirelessly connected to the peripheral terminal.

2. The dynamic blood pressure monitoring device based on wireless data transmission according to claim 1, characterized in that: The main strap (1) includes an outer fabric layer (11) and a skin-friendly inner layer (12). The outer fabric layer (11) and the skin-friendly inner layer (12) are tightly and fixedly connected at their edges. The outer fabric layer (11) and the skin-friendly inner layer (12) are wrapped around the outside of the buffer airbag (6) and the monitoring airbag (8) which are in a layered manner.

3. The dynamic blood pressure monitoring device based on wireless data transmission according to claim 2, characterized in that: A honeycomb isolation net (7) is provided between the buffer airbag (6) and the monitoring airbag (8), and the outer edge of the honeycomb isolation net (7) is fixedly clamped at the edge joint of the outer fabric layer (11) and the skin-friendly inner layer (12).

4. The dynamic blood pressure monitoring device based on wireless data transmission according to claim 1, characterized in that: The control box (2) includes an outer box (21), in which a battery (212) and a circuit board (29) are fixedly connected. A wireless communication module (211) and a microprocessor (210) are also integrated on the circuit board (29). A touch screen (22) is embedded in the upper box surface of the outer box (21). The battery (212) is electrically connected to each electrical component, and the microprocessor (210) is signal connected to each electrical component.

5. The dynamic blood pressure monitoring device based on wireless data transmission according to claim 4, characterized in that: The buffer air pump (23) is installed inside the outer box (21). The buffer air pump (23) and the buffer airbag (6) are connected by a buffer inflation tube (25). A buffer pressure sensor (61) is fixedly connected inside the buffer airbag (6). An electromagnetic vent valve (62) is fixedly connected to the body of the buffer airbag (6).

6. The dynamic blood pressure monitoring device based on wireless data transmission according to claim 4, characterized in that: The monitoring air pump (24) is installed inside the outer casing (21). A monitoring inflation tube (26) is connected between the monitoring air pump (24) and the monitoring airbag (8). A monitoring pressure sensor (81) is fixedly connected inside the monitoring airbag (8).

7. The dynamic blood pressure monitoring device based on wireless data transmission according to claim 6, characterized in that: The monitoring inflation tube (26) is located inside the outer box (21) and is connected to a three-way solenoid valve (27). The three-way solenoid valve (27) is also connected to a pressure relief tube (28). The other end of the pressure relief tube (28) is located directly above the circuit board (29). Several heat dissipation holes (213) are provided on the side wall of the outer box (21).

8. The dynamic blood pressure monitoring device based on wireless data transmission according to claim 2, characterized in that: The shape memory alloy strips (5) are woven into the outer layer (11) of the fabric along the length of the main strap (1), and multiple shape memory alloy strips (5) are distributed in parallel at equal intervals.

9. The dynamic blood pressure monitoring device based on wireless data transmission according to claim 1, characterized in that: The main strap (1) is provided with a Velcro 3 and a Velcro 4 at both ends, and the Velcro 3 is fixedly connected to the outer fabric layer (11), and the Velcro 4 is fixedly connected to the skin-friendly inner layer (12).

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