Wearable device for artery waveform acquisition and stiffness calculation

Abstract

The invention relates to the technical field of medical wearable equipment, in particular to wearable equipment for artery waveform acquisition and stiffness calculation, which comprises an equipment part, the equipment part comprises a wearing piece and a sticking piece, the wearing piece comprises an elastic shell, the equipment part is in signal connection with a control part, the sticking piece comprises a sticking belt, and the sticking belt is connected with the control part. A covering shell adheres to the interior of the adhesive tape, the covering shell is detachably connected with an infrared transmitting end and a first pressure sensor, an air bag is fixedly connected to the interior of the shell, an infrared receiving end is arranged on the air bag, a second pressure sensor is further fixedly connected to the air bag, an equipment box body is fixedly connected to the fixed end, and an air pumping assembly is arranged in the equipment box body; the sensing detection function is achieved through the pasting piece, the detection pressurization function is achieved through the wearing piece, and the accuracy of artery waveform detection is improved by combining the separated structure with pressurization control adjustment.

Description

Technical Field

[0001] The present invention relates to the technical field of medical wearable devices, and in particular to a wearable device for arterial waveform acquisition and stiffness calculation. Background Art

[0002] With the continuous advancement of medical technology, wearable devices are increasingly used in the field of health monitoring. In particular, wearable devices provide a convenient and non-invasive solution for monitoring key physiological indicators such as arterial waveform acquisition and stiffness calculation. However, although existing wearable devices have made certain technological progress, there are still some significant defects in the actual detection process.

[0003] Wearable devices currently on the market, such as wristwatch-type detection devices, can initially monitor the user's physiological indicators, but the accuracy of arterial waveform acquisition and stiffness calculation still needs to be improved. Such devices usually use relatively simple sensors and algorithms, without considering the tightness of the cuff (wearing part) and the skin. Too tight may cause user discomfort and high measurement results; too loose may cause the cuff to slip when pressurized, affecting the measurement results.

[0004] Therefore, it is necessary to propose a wearable device for arterial waveform acquisition and stiffness calculation. Through the separate design of the sensor and the pressurized component, the accurate capture and analysis of the arterial waveform is achieved. At the same time, the wearing comfort and stability are fully considered in the design of the device to ensure that the user can wear it stably for a long time and obtain accurate test results. Summary of the invention

[0005] In order to solve the above problems, the present invention provides a wearable device for arterial waveform collection and stiffness calculation. The sensing detection function is realized by an adhesive piece, and the detection and pressurization function is realized by a wearable piece. The separate structure is combined with the control and adjustment of the pressurization to improve the accuracy of arterial waveform detection.

[0006] In order to achieve the above-mentioned object, the technical solution of the present invention is as follows: A wearable device for arterial waveform collection and stiffness calculation includes a device part, the device part includes a wearable part, the wearable part includes an elastic shell, the shell is a circular ring structure with the head and tail not connected, the device part is signal-connected to a control part, and the control part includes a control system for collecting the user's arterial waveform;

[0007] The device part also includes an adhesive member, which includes an adhesive tape, a transparent cover shell is adhered to the adhesive tape, an infrared emitting end and a first pressure sensor are detachably connected in the cover shell from top to bottom, and the first pressure sensor is connected to the control system signal;

[0008] The two ends of the shell are respectively a fixed end and a sleeve end, an airbag corresponding to the internal shape of the shell is fixedly connected inside the shell, an infrared receiving end is provided at a position corresponding to the infrared transmitting end on the airbag, and a second pressure sensor is also fixedly connected to the airbag. When the infrared receiving end is facing the infrared transmitting end, the position of the second pressure sensor is facing the top surface of the covering shell, and the fixed end is fixedly connected to a device box body, and a pump air component for inflating the airbag is provided in the device box body, the pump air component is communicated with the airbag, and the pump air component is connected to the control system signal.

[0009] The technical principle of the above scheme is as follows: before the device starts working, the user needs to first fix the adhesive piece to the radial artery of the wrist through the adhesive tape, align the sleeve end of the wearable piece with the fixed end, and fix the wearable piece on the wrist through the cooperation of the card block and the card slot. When detection is required, the control system will control the pump air component to start working and inflate the airbag. As the airbag expands, it will gradually approach and eventually contact the covering shell. In this process, the second pressure sensor will monitor the pressure applied by the airbag to the covering shell in real time to determine whether the airbag is inflated to an appropriate degree. When the pressure in the airbag reaches or exceeds the preset pressure collection threshold, the control system will control the pump air component to stop working. At this time, the airbag has been tightly attached to the user's wrist, providing a stable force support for the first pressure sensor. Next, the first pressure sensor will continue to collect the user's arterial pulsation pressure signal, and transmit these signals to the control system to calculate the user's arterial stiffness physiological indicators.

[0010] The above scheme has the following beneficial effects:

[0011] 1. In this solution, the device is divided into two parts: the wearable part and the adhesive part. The wearable part is responsible for providing a stable wearing foundation. Its elastic shell is designed as a circular ring structure that is not connected at the head and tail. It can adapt to the wrist sizes of different users, and ensure the wearing stability through the buckle design of the fixed end and the set end. The adhesive part is responsible for the sensing detection function. The adhesive tape tightly fits the cover shell to the artery of the user's wrist to achieve accurate collection of the arterial waveform.

[0012] 2. In this solution, in the cooperation between the adhesive part and the wearable part, the setting of the infrared transmitting end and the infrared receiving end plays a role in precise positioning. Only when the infrared receiving end is facing the infrared transmitting end, the control system will start the pump air assembly to inflate the airbag to ensure that the airbag can accurately fit near the artery and provide stable support for the first pressure sensor. The second pressure sensor is used to monitor the pressure between the airbag and the covering shell to ensure that the expansion degree of the airbag is neither too tight to cause user discomfort or high measurement results, nor too loose to cause the cuff to slip and affect the measurement results.

[0013] Furthermore, the backing material of the adhesive tape is made of PET film material, and the adhesive of the adhesive tape is made of pressure-sensitive adhesive.

[0014] Beneficial effects: The PET film material is thin and light and has a certain degree of air permeability, which can reduce the discomfort caused to users by long-term wearing. It is especially important for users who need long-term monitoring, and can improve wearing comfort and user acceptance; the pressure-sensitive adhesive has excellent adhesion, which can ensure that the adhesive tape fits tightly on the user's skin and is not easy to fall off. Both PET film material and pressure-sensitive adhesive are medical-grade materials, which are friendly to human skin and not easy to cause allergic reactions. They are crucial for wearable medical monitoring equipment and can ensure the safety of users during use.

[0015] Furthermore, a plurality of slots are provided on the side wall of the fixed end, and a card block corresponding to any slot shape is fixedly connected to the sleeve end, and the card block can be inserted into any slot for fixation.

[0016] Beneficial effects: The card slots on the side wall of the fixed end and the corresponding card block design on the sleeve end realize flexible fixation and high stability when the device is worn, so that when the user wears the wearable device, he can choose the appropriate card slot according to the circumference of the wrist, and insert the card block on the sleeve end into the corresponding card slot for fixation, making the wearing process simple and quick, and ensuring the stability of the device during daily activities or specific testing processes, effectively preventing the occurrence of loose equipment affecting the test results. In addition, the buckle-type fixing method also makes it easy for users to quickly adjust or disassemble according to their needs, which improves the convenience and comfort of using the device.

[0017] Furthermore, a plurality of the card slots are provided with pressure-bearing grooves, a third pressure sensor is fixedly connected in the pressure-bearing grooves, and a pad block fused to the side wall of the card slot is provided on the top of the third pressure sensor.

[0018] Beneficial effects: By setting the third pressure sensor in different card slots, the pressure distribution between the wrist and the device at different positions when the user wears the device can be accurately captured, laying the foundation for evaluating the wearing comfort of the device and ensuring the stable wearing of the device. Due to the differences in wrist size and shape of different users, the traditional single pressure threshold setting may not be suitable for everyone. This design uses the third pressure sensor to monitor and feedback the user's specific wrist pressure in real time, and can dynamically adjust the inflation degree of the airbag, thereby ensuring that the first pressure sensor can fit the user's artery with the most appropriate pressure and improve the accuracy of arterial waveform acquisition.

[0019] Furthermore, the airbag is made of a mixed material of silicone and polyurethane.

[0020] Beneficial effects: Both silicone and polyurethane are highly elastic and wear-resistant materials. Their mixed use can further enhance the durability of the airbag, enabling it to withstand repeated inflation and deflation processes, extending the life of the device. In addition, the mixed material of silicone and polyurethane is softer to the touch and can better fit the user's skin, reducing the discomfort caused to the user during long-term wear.

[0021] Furthermore, a button is fixedly connected to the outer wall of the shell, and the button is connected to the control system signal.

[0022] Beneficial effects: Users can operate the device by directly pressing buttons, without going through complicated menus or touch screen operations, which greatly simplifies the operation process and improves the user experience. Button operations can instantly trigger the response of the control system, whether it is starting / stopping detection, adjusting settings or viewing results, feedback can be obtained quickly, improving the interactive efficiency and response speed of the device.

[0023] Further, the control system includes a regulating unit, a positioning unit for monitoring the relative position of the airbag and the first pressure sensor, a driving unit for signal controlling the tightness of the airbag, and a detection unit for collecting the user's arterial waveform and calculating the stiffness;

[0024] The adjustment unit includes a user vital sign collection module, a wearing monitoring module, and a threshold calculation module;

[0025] The user's physical sign collection module is used to collect the name, age, height, weight and cardiovascular disease history input by the user.

[0026] A wearing monitoring module, used to create identifiers for the plurality of third pressure sensors respectively, and link the identifiers to the corresponding wrist circumferences, and continuously receive pressure signals from the plurality of third pressure sensors and monitor the pressure conditions of the plurality of card slots when the user wears the housing. If a third pressure sensor continuously sends a pressure signal, the identifier corresponding to the third pressure sensor is transmitted to the threshold calculation module;

[0027] The threshold calculation module is used to receive the user's height, weight and cardiovascular disease history transmitted by the user vital sign collection module, and the identifier transmitted by the wearing monitoring module, extract the corresponding wrist circumference according to the identifier, and calculate the tightness threshold in combination with the patient's height and weight, that is, the pressure collection threshold of the second pressure sensor, and perform attenuation calculation on the pressure threshold according to the cardiovascular disease history uploaded by the user, and finally transmit the pressure collection threshold after attenuation calculation to the drive unit.

[0028] Beneficial effects: Through the user vital signs collection module, the user's personalized information is obtained, which provides a basis for the subsequent calculation of the tightness threshold, ensuring that the device can be personalized according to the physical characteristics of different users, thereby improving the accuracy of monitoring. The wearing monitoring module monitors the pressure of the card slot in real time during the user's wearing process by creating an identifier for the third pressure sensor and linking the corresponding wrist circumference. Once a stable pressure signal is detected, it means that the device has been worn correctly. At this time, the module will pass the relevant information to the threshold calculation module. This process realizes the intelligent wearing monitoring of the device and automatically calibrates the tightness threshold, reducing the need for manual adjustment by the user. The threshold calculation module dynamically calculates the tightness threshold suitable for the user based on the user's personalized information. At the same time, considering the possible impact of cardiovascular history on arterial waveform acquisition, the module will also perform attenuation calculation on the pressure threshold to ensure the safety and accuracy of the monitoring process, adapt to the physiological characteristics of different users, and improve the reliability and safety of monitoring.

[0029] Further, the positioning unit includes a signal sending module and an infrared receiving module;

[0030] The signal sending module is used to receive the signal transmitted by the user pressing the button, and send a start signal indicating the start of detection to the infrared receiving module; when the user is emotionally stable and the environment is quiet, the user can press the button, and the button is pressed to send a signal to the signal sending module, indicating that the detection is started;

[0031] The infrared receiving module is used to receive the start signal transmitted by the signal sending module, transmit the driving signal to the infrared transmitting end and the infrared receiving end, and continuously collect the signal sent by the infrared receiving end. When the infrared receiving end collects the infrared rays emitted by the infrared transmitting end, the infrared receiving end sends an electrical signal to the infrared receiving module, and the infrared receiving module sends a detection signal indicating position alignment to the driving unit.

[0032] Beneficial effects: The user only needs to press the button when the emotion is stable and the environment is quiet to start the entire detection process, which greatly simplifies the operation process and improves the convenience of use. The infrared receiving module receives the infrared rays emitted by the infrared transmitting end and continuously collects the signals from the infrared receiving end, which can ensure the accuracy of the position of the device during wearing. This positioning method is not only fast, but also accurate, and can effectively avoid monitoring errors caused by improper device positioning. Before the test begins, the user needs to ensure that he is in a stable emotional state and the environment is quiet, which helps to reduce the interference of external factors on the monitoring results and improve the accuracy of monitoring. At the same time, through infrared positioning, the device can issue an alarm in time when an abnormal position is detected, avoiding potential harm to the user due to improper wearing of the device.

[0033] Furthermore, the driving unit includes an inflation driving module, a tension pressure acquisition module and an inflation monitoring module;

[0034] The inflation drive module is used to receive the detection signal transmitted by the infrared receiving module, and after receiving the detection signal, send a drive signal to drive the air pump to start and inflate the airbag;

[0035] The tension pressure acquisition module is used to collect the pressure signal of the airbag and the cover shell through the second pressure sensor, and convert the pressure signal into pressure data and transmit it to the inflation monitoring module;

[0036] The inflation monitoring module is used to receive the pressure collection threshold transmitted by the threshold calculation module and the pressure data transmitted by the tension pressure collection module, and compare the pressure data with the pressure collection threshold. When the pressure data is greater than or equal to the pressure collection threshold, a drive stop signal is sent to the air pump to control the air pump to stop inflation.

[0037] Beneficial effects: The detection signal of the infrared receiving module is received by the inflation drive module, and the air pump is automatically started to inflate the airbag, thereby realizing the automatic control of inflation. This design not only simplifies the operation process, but also improves the accuracy and efficiency of inflation. The loose pressure acquisition module collects the pressure signals of the airbag and the covering shell in real time through the second pressure sensor, and converts them into pressure data and transmits them to the inflation monitoring module. The inflation monitoring module monitors and compares the pressure data in real time according to the preset pressure acquisition threshold. Once the pressure data reaches or exceeds the threshold, a stop signal is immediately sent to the air pump to control it to stop inflating. This process ensures that the airbag can fit the user's artery with appropriate pressure, which not only ensures the accuracy of monitoring, but also avoids the discomfort caused to the user by overinflation. Since the pressure acquisition threshold is calculated based on the personalized information of the user such as height, weight, cardiovascular history, etc., the drive unit can make personalized pressure adjustments according to the physical characteristics of different users. This design enables the device to adapt to the needs of different users more accurately, and improves the accuracy and personalization of monitoring.

[0038] Further, the detection unit includes a waveform detection module and a stiffness calculation module;

[0039] The detection module is used to continuously collect the arterial pulsation pressure signal of the user through the first pressure sensor, filter, amplify and digitally process the pressure signal, and record it as a waveform diagram of periodic pressure changes generated by the artery with the heartbeat, that is, arterial waveform data, and then transmit the arterial waveform data to the stiffness calculation module;

[0040] The stiffness calculation module is used to receive the arterial waveform data extracted by the waveform detection module and evaluate the user's arterial stiffness based on the arterial waveform data.

[0041] Beneficial effects: The waveform detection module continuously and accurately collects the user's arterial pulsation pressure signal through the first pressure sensor, and performs filtering, amplification and digital processing to ensure that the collected arterial waveform data has a high signal-to-noise ratio and clarity. This process provides a reliable data basis for subsequent stiffness calculations. The waveform detection module can record in real time the periodic pressure change waveform generated by the artery with the heartbeat, that is, the arterial waveform data. This real-time recording and analysis capability enables the device to capture changes in the user's arterial status in a timely manner and provide timely health feedback to doctors or users themselves.

[0042] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is a schematic diagram of the overall structure of an embodiment of a wearable device for arterial waveform acquisition and stiffness calculation of the present invention;

[0044] Figure 2 A partial isometric cross-sectional view of a wearable device in an embodiment of the present invention for collecting arterial waveforms and calculating stiffness;

[0045] Figure 3 It is an axonometric cross-sectional view of an adhesive member in an embodiment of a wearable device for arterial waveform acquisition and stiffness calculation of the present invention;

[0046] Figure 4 The wearable device for arterial waveform acquisition and stiffness calculation of the present invention is an embodiment of Figure 1 An enlarged view of the pressure groove at point A in the middle.

[0047] The figure marks in the drawings of the specification include: 1. wearing part; 2. adhesive part; 3. shell; 301. fixed end; 302. sleeve end; 4. adhesive tape; 5. covering shell; 6. infrared transmitting end; 7. first pressure sensor; 8. infrared receiving end; 9. second pressure sensor; 10. pump air assembly; 11. slot; 12. block; 13. pressure groove; 14. third pressure sensor; 15. pad; 16. button. DETAILED DESCRIPTION

[0048] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0050] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] The following is further described in detail through specific implementation methods:

[0052] Embodiment 1:

[0053] As attached Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown: A wearable device for arterial waveform collection and stiffness calculation includes a control unit and a device unit, the control unit is connected to the device unit by signal, the control unit includes a control system for collecting user arterial waveforms, the device unit includes a wearing member 1 and an adhesive member 2, the wearing member 1 includes a shell 3, the shell 3 is a circular ring structure that is not connected at the beginning and the end, and the two ends of the shell 3 are respectively a fixed end 301 and a sleeve end 302; in order to achieve convenient wearing and stability during wearing, a plurality of card slots 11 are opened on the side wall of the fixed end 301, and the sleeve end 302 is provided with a plurality of card slots 11. A card block 12 corresponding to the shape of any card slot 11 is engraved on it, and the card block 12 can be inserted into the card slot 11 for fixation. During the wearing process, the user first aligns the set end 302 of the device with and approaches the fixed end 301, and then selects the corresponding card slot 11 according to the circumference of the wrist, aligns the card slot 11 and pushes the set end 302 to align the card block 12 and slide it into the card slot 11. Once the card block 12 is completely inserted into the card slot 11, the shell 3 is firmly fixed on the wrist, and can maintain extremely high stability whether it is daily activities or specific detection.

[0054] In order to realize the detection of the wearer's arterial waveform, the wearable component 1 and the adhesive component 2 need to cooperate with each other. The adhesive component 2 includes an adhesive tape 4, a covering shell 5 is adhered to the adhesive tape 4, and a first pressure sensor 7 is detachably connected to the covering shell 5 through a snap structure; and since the radial artery is one of the main arteries of the human upper limb, its waveform changes can reflect a variety of physiological information such as heart function, vascular elasticity and blood flow status. Therefore, when using it, the user needs to stick the covering shell 5 to the radial artery of the wrist through the adhesive tape 4 to detect the pressure of the radial artery through the first pressure sensor 7.

[0055] However, the first pressure sensor 7 needs force support when detecting the pressure signal, and it is difficult to detect the pressure of the arterial pulsation by simply supporting it with the adhesive tape 4. Even if it can be detected, its detection accuracy is low. For this reason, an airbag is bonded to the inner wall of the shell 3 by hot melt adhesive. The airbag corresponds to the shape of the inside of the shell 3. The fixed end 301 is sleeved with a device box body, which is welded and fixed to the shell 3. A pump air component 10 is provided in the device box body. The pump air component 10 is preferably an air pump. The airbag is connected to the air pump through a pipeline. When the air pump is started and air is injected into the airbag through the pipeline, as the airbag expands, it fits tightly near the artery and acts as a force support for the first pressure sensor 7, so that the first pressure sensor 7 can accurately capture the pressure signal of the arterial pulsation, thereby improving the detection accuracy of the arterial waveform.

[0056] There are many problems when the balloon is inflated to fit the patient's radial artery:

[0057] Firstly, the position of the airbag needs to be aligned with the position of the first pressure sensor 7, otherwise the support force of the first pressure sensor 7 caused by the expansion of the airbag is a non-linear force. On the one hand, the first pressure sensor 7 may be squeezed and tilted on the user's skin, so that the pressure signal that can be detected by the first pressure sensor 7 is attenuated due to the misalignment, and the detected waveform is smaller than the accurate value. On the other hand, it may not provide force support for the first pressure sensor 7, thereby making the pressure detection invalid. Therefore, an infrared transmitting end 6 is also provided in the covering shell 5. The infrared transmitting end 6 is located between the first pressure sensor 7 and the inner wall of the covering shell 5 and is fused to the inner wall of the covering shell 5. An infrared receiving end 8 is provided on the inner side of the outer wall of the airbag. The infrared receiving end 8 corresponds to the position of the device box. Before the airbag starts to inflate, infrared signals are continuously emitted through the infrared transmitting end 6. These signals communicate and locate with the infrared receiving end 8 on the airbag. Only when the infrared receiving end 8 receives the infrared signal emitted by the infrared transmitting end 6, the airbag starts to inflate again. At this time, the position of the airbag is directly opposite to the position of the covering shell 5.

[0058] Secondly, after the position of the airbag is positioned, compared with conventional blood pressure detection, the waveform detection of the artery requires more accurate waveform peak detection, so it is necessary to monitor the degree of fit between the airbag and the skin. If the airbag fits the skin too well (the airbag is too inflated and the tightening pressure on the wrist is too great), the excessive pressure may block or significantly weaken the blood flow in the artery, causing the detected waveform to be distorted and unable to accurately reflect the true changes in arterial blood pressure. At this time, the waveform peak may increase or decrease abnormally, or even disappear completely, thereby misleading the diagnosis of medical staff; therefore, a second pressure sensor 9 is designed to be provided on the inner side of the outer wall of the airbag. The second pressure sensor 9 is located on the side close to the infrared receiving end 8 and corresponds to the position of the covering shell 5. The second pressure sensor 9 is used to detect the pressure signal between the airbag and the top of the covering shell 5. When the airbag begins to inflate and gradually expands, it will gradually approach and eventually contact the covering shell 5. During the process, the second pressure sensor 9 will monitor the pressure applied by the airbag to the covering shell 5 in real time, and the pressure data detected by the second pressure sensor 9 will reflect the degree of fit between the airbag and the user's skin (tightness).

[0059] In addition, since different users have individual differences, when subjects with individual differences perform arterial waveform detection, in order to improve the accuracy of the detection, the pressure threshold detected by the second pressure sensor 9 (i.e., the maximum tightening degree of the airbag) needs to be determined according to the individual differences of the users; therefore, specifically, Figure 4 As shown, a plurality of card slots 11 are designed to be provided with pressure-bearing grooves 13, and a third pressure sensor 14 is welded in the pressure-bearing grooves 13. A pad 15 welded to the side wall of the card slot 11 is provided on the top of the third pressure sensor 14. When the user wears the shell 3, the card block 12 is inserted into the corresponding card slot 11, and the third pressure sensor 14 in the corresponding card slot 11 will detect whether a pressure signal exists, capture the signal of the close fit between the card block 12 and the card slot 11, and use the arrangement of the plurality of card slots 11 as the thickness of the user's wrist, so as to evaluate the optimal tightening degree of different users and realize personalized pressure waveform detection for the user.

[0060] Embodiment 2:

[0061] The difference from Example 1 is that the airbag is made of a mixed material of silicone and polyurethane, both of which are highly elastic and wear-resistant materials. Their mixed use can further enhance the durability of the airbag, enabling it to withstand repeated inflation and deflation processes, thereby extending the service life of the device. In addition, the mixed material of silicone and polyurethane is softer to the touch, can better fit the user's skin, and reduce the discomfort caused to the user during long-term wear.

[0062] The backing material of the adhesive tape 4 is made of PET film material, and the adhesive of the adhesive tape 4 is made of pressure-sensitive adhesive. The PET film material is thin and light and has a certain air permeability, which can reduce the discomfort caused to users by long-term wearing. This is particularly important for users who need long-term monitoring, and can improve the wearing comfort and user acceptance. The pressure-sensitive adhesive has excellent adhesion, which can ensure that the adhesive tape fits tightly on the user's skin and is not easy to fall off. Both the PET film material and the pressure-sensitive adhesive are medical-grade materials, which are friendly to the human skin and not easy to cause allergic reactions. This is crucial for wearable medical monitoring devices and can ensure the safety of users during use.

[0063] Embodiment 3:

[0064] The difference from Embodiment 2 is that the control system includes an adjustment unit, a positioning unit, a driving unit, and a detection unit.

[0065] The adjustment unit includes a user physical sign acquisition module, a wearing monitoring module, and a threshold calculation module.

[0066] The user physical sign acquisition module acquires the user's entered name, age, height, weight, and cardiovascular disease history.

[0067] The wearing monitoring module creates identifiers for several third pressure sensors 14 respectively, and links the identifiers to the corresponding wrist circumferences. During the process of the user wearing the housing 3, it continuously receives the pressure signals of several third pressure sensors 14, monitors the pressure conditions of several card slots 11. If a certain third pressure sensor 14 continuously sends pressure signals, the identifier corresponding to the third pressure sensor 14 is transmitted to the threshold calculation module.

[0068] The threshold calculation module receives the user's height, weight, and cardiovascular disease history transmitted by the user physical sign acquisition module, and the identifiers transmitted by the wearing monitoring module, extracts the corresponding wrist circumferences according to the identifiers, calculates the tightness threshold, that is, the pressure acquisition threshold of the second pressure sensor 9, in combination with the user's height and weight, and performs attenuation calculation on the pressure threshold according to the cardiovascular disease history uploaded by the user. Finally, the pressure acquisition threshold after attenuation calculation is transmitted to the driving unit.

[0069] The positioning unit includes a signal sending module and an infrared receiving module.

[0070] The signal sending module receives the signal transmitted by the user pressing the button 16 and sends a start signal indicating the start of detection to the infrared receiving module; when the user's mood is stable and the environment is quiet, the user can press the button 16, and the button 16 is pressed to send a signal to the signal sending module, which means the detection is started.

[0071] The infrared receiving module receives the start signal transmitted by the signal sending module, transmits the drive signal to the infrared transmitting end 6 and the infrared receiving end 8, and continuously collects the signal sent by the infrared receiving end 8. When the infrared receiving end 8 collects the infrared rays emitted by the infrared transmitting end 6, the infrared receiving end 8 sends an electrical signal to the infrared receiving module, and the infrared receiving module sends a detection signal indicating position alignment to the drive unit.

[0072] The driving unit includes an inflation driving module, a tension pressure acquisition module and an inflation monitoring module.

[0073] The inflation drive module receives the detection signal transmitted by the infrared receiving module, and after receiving the detection signal, sends a drive signal to drive the air pump to start and inflate the airbag;

[0074] The tension pressure acquisition module collects the pressure signal of the airbag and the cover shell 5 through the second pressure sensor 9, and converts the pressure signal into pressure data and transmits it to the inflation monitoring module;

[0075] The inflation monitoring module receives the pressure collection threshold transmitted by the threshold calculation module and the pressure data transmitted by the tension pressure collection module, and compares the pressure data with the pressure collection threshold. When the pressure data is greater than or equal to the pressure collection threshold, a drive stop signal is sent to the air pump to control the air pump to stop inflation.

[0076] The detection unit includes a waveform detection module and a stiffness calculation module.

[0077] The detection module continuously collects the user's arterial pulsation pressure signal through the first pressure sensor 7, filters, amplifies and digitizes the pressure signal, and records it as a waveform diagram of periodic pressure changes caused by the artery with the heartbeat, that is, arterial waveform data, and then transmits the arterial waveform data to the stiffness calculation module.

[0078] The stiffness calculation module receives the arterial waveform data extracted by the waveform detection module, and calculates the user's arterial stiffness index (β), pressure strain elastic coefficient (Ep), compliance (AC) and other data by extracting key data such as systolic blood pressure (SBP), diastolic blood pressure (DBP), arterial systolic diameter (Ds) and diastolic diameter (Dd), and evaluates the user's arterial stiffness. By calculating arterial stiffness, the user's cardiovascular health status is evaluated.

[0079] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the present invention.

Claims

1. A wearable device for arterial waveform collection and stiffness calculation, comprising a device portion, the device portion comprising a wearable component (1), the wearable component (1) comprising an elastic shell (3), the shell (3) being a circular ring structure with its ends not connected, characterized in that: The device part is signal-connected to a control part, and the control part includes a control system for collecting the user's arterial waveform; The device part also includes an adhesive member (2), the adhesive member (2) includes an adhesive tape (4), a transparent covering shell (5) is adhered to the adhesive tape (4), an infrared emitting end (6) and a first pressure sensor (7) are detachably connected in sequence from top to bottom in the covering shell (5), and the first pressure sensor (7) is connected to the control system signal; The two ends of the shell (3) are respectively a fixed end (301) and a sleeve end (302); an air bag corresponding to the internal shape of the shell (3) is fixedly connected inside the shell (3); an infrared receiving end (8) is provided at a position corresponding to the infrared transmitting end (6) on the air bag; a second pressure sensor (9) is also fixedly connected to the air bag; when the infrared receiving end (8) faces the infrared transmitting end (6), the position of the second pressure sensor (9) faces the top surface of the covering shell (5); the fixed end (301) is fixedly connected to a device box body; a pump air component (10) for inflating the air bag is provided inside the device box body; the pump air component (10) is communicated with the air bag; and the pump air component (10) is connected to a control system signal.

2. The wearable device for arterial waveform acquisition and stiffness calculation according to claim 1, characterized in that: The backing material of the adhesive tape (4) is made of a PET film material, and the adhesive of the adhesive tape (4) is made of a pressure-sensitive adhesive.

3. The wearable device for arterial waveform acquisition and stiffness calculation according to claim 2, characterized in that: A plurality of slots (11) are formed on the side wall of the fixed end (301), and a card block (12) having a shape corresponding to any slot (11) is fixedly connected to the sleeve end (302), and the card block (12) can be inserted into any slot (11) for fixation.

4. The wearable device for arterial waveform acquisition and stiffness calculation according to claim 3, characterized in that: A plurality of card slots (11) are provided with pressure-bearing grooves (13), a third pressure sensor (14) is fixedly connected to the pressure-bearing grooves (13), and a cushion block (15) welded to the side wall of the card slot (11) is provided on the top of the third pressure sensor (14).

5. The wearable device for arterial waveform acquisition and stiffness calculation according to claim 4, characterized in that: The airbag is made of a mixture of silicone and polyurethane.

6. The wearable device for arterial waveform acquisition and stiffness calculation according to claim 5, characterized in that: A button (16) is fixedly connected to the outer wall of the housing (3), and the button (16) is connected to a control system signal.

7. The wearable device for arterial waveform acquisition and stiffness calculation according to claim 6, characterized in that: The control system comprises a regulating unit, a positioning unit for monitoring the relative position of the airbag and the first pressure sensor (7), a driving unit for signal controlling the tightness of the airbag, and a detection unit for collecting the user's arterial waveform and calculating the stiffness; The adjustment unit includes a user vital sign collection module, a wearing monitoring module, and a threshold calculation module; The user's physical sign collection module is used to collect the name, age, height, weight and cardiovascular disease history input by the user. A wearing monitoring module is used to create identifiers for the plurality of third pressure sensors (14) respectively, and link the identifiers to the corresponding wrist circumferences; when the user wears the housing (3), the module continuously receives pressure signals from the plurality of third pressure sensors (14) and monitors the pressure conditions of the plurality of card slots (11); if a third pressure sensor (14) continuously sends a pressure signal, the identifier corresponding to the third pressure sensor (14) is transmitted to the threshold calculation module; The threshold calculation module is used to receive the height, weight and cardiovascular disease history of the user transmitted by the user vital sign collection module, and the identifier transmitted by the wearing monitoring module, extract the corresponding wrist circumference according to the identifier, and calculate the tightness threshold value, i.e., the pressure collection threshold value of the second pressure sensor (9), in combination with the height and weight of the patient, and perform attenuation calculation on the pressure threshold value according to the cardiovascular disease history uploaded by the user, and finally transmit the pressure collection threshold value after attenuation calculation to the driving unit.

8. The wearable device for arterial waveform acquisition and stiffness calculation according to claim 7, characterized in that: The positioning unit includes a signal sending module and an infrared receiving module; The signal sending module is used to receive a signal transmitted by a user pressing a button (16), and send a start signal indicating the start of detection to the infrared receiving module; when the user is emotionally stable and the environment is quiet, the user can press the button (16), and the button (16) is pressed to send a signal to the signal sending module, indicating that the detection is started; The infrared receiving module is used to receive the start signal transmitted by the signal sending module, transmit the driving signal to the infrared transmitting end (6) and the infrared receiving end (8), and continuously collect the signal sent by the infrared receiving end (8); when the infrared receiving end (8) collects the infrared rays emitted by the infrared transmitting end (6), the infrared receiving end (8) sends an electrical signal to the infrared receiving module, and the infrared receiving module sends a detection signal indicating position alignment to the driving unit.

9. The wearable device for arterial waveform acquisition and stiffness calculation according to claim 8, characterized in that: The driving unit includes an inflation driving module, a tension pressure acquisition module and an inflation monitoring module; The inflation drive module is used to receive the detection signal transmitted by the infrared receiving module, and after receiving the detection signal, send a drive signal to drive the air pump to start and inflate the airbag; A tension pressure acquisition module, used for acquiring pressure signals of the airbag and the covering shell (5) through a second pressure sensor (9), and converting the pressure signals into pressure data and transmitting them to the inflation monitoring module; The inflation monitoring module is used to receive the pressure collection threshold transmitted by the threshold calculation module and the pressure data transmitted by the tension pressure collection module, and compare the pressure data with the pressure collection threshold. When the pressure data is greater than or equal to the pressure collection threshold, a drive stop signal is sent to the air pump to control the air pump to stop inflation.

10. The wearable device for arterial waveform acquisition and stiffness calculation according to claim 9, characterized in that: The detection unit includes a waveform detection module and a stiffness calculation module; The detection module is used to continuously collect the arterial pulsation pressure signal of the user through the first pressure sensor (7), filter, amplify and digitally process the pressure signal, and record it as a waveform diagram of periodic pressure changes generated by the artery with the heartbeat, that is, arterial waveform data, and then transmit the arterial waveform data to the stiffness calculation module; The stiffness calculation module is used to receive the arterial waveform data extracted by the waveform detection module and evaluate the user's arterial stiffness based on the arterial waveform data.

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