Wearable vascular elasticity detection and evaluation device

Abstract

The utility model discloses a wearable vascular elasticity detection and evaluation device, the wearable vascular elasticity detection and evaluation device comprises a host, a wearable wrist strap, a detection module and a control module, the detection module is arranged on the wearable wrist strap, and the position of the detection module corresponds to the radial artery of the wrist of a human body and the position nearby the radial artery; the control module is arranged in the host, the control module is in communication connection with the detection module, and the control module is used for controlling the detection module to obtain the pulse wave signal according to a preset instruction so as to generate a pulse wave waveform. According to the wearable vascular elasticity detection and evaluation device, radial artery pulse wave information is directly measured, optical pulse waves, measured by PPG, of arteries or blood capillaries or muscular tissue are more accurate, support is provided for more accurate evaluation of artery and blood vessel elasticity, meanwhile, detection is actively initiated by the wearable vascular elasticity detection and evaluation device, and the detection accuracy is improved. The user compliance and the equipment use efficiency are improved, and the health state of the user can be better detected and evaluated.

Description

Technical Field

[0001] The utility model relates to the technical field of intelligent wearable devices, and in particular to a wearable vascular elasticity detection and evaluation device. Background Art

[0002] Pulse wave velocity (PWV) refers to the speed at which the pulse wave propagates from a specific location of the artery along the wall to another specific location. It is a non-invasive indicator used to reflect the elasticity and distensibility of the artery. In other words, the pulse wave velocity is equal to the distance between the two test points divided by the pulse wave transmission time (PWTT). Hardening of the aorta will shorten the pulse wave transmission time and speed up the pulse wave transmission velocity. The higher the PWV value, the weaker the elasticity of the blood vessel wall, and the lower the PWV value, the stronger the elasticity of the blood vessel wall.

[0003] In order to accurately measure the pulse wave transmission time (PWTT), we often combine the synchronous electrocardiogram (ECG) signal and the photoplethysmogram (PPG) signal to calculate the PWTT, taking the R wave of the ECG signal as the starting point and the peak point of the PPG signal as the end point, as follows: Figure 1 shown.

[0004] At present, the PPG measurement position of wearable products is generally on the back of the wrist or the fingertips. The measurement object is micro-arteries (diameter about 0.3 mm) or capillaries or muscle tissue. Due to the greater vascular resistance, the waveform is prone to errors, especially for patients with peripheral diseases. In addition, PWV measurement requires the user to put his other hand on the crown to form an ECG measurement circuit, which requires the user to actively participate in the measurement, increasing the measurement steps, affecting the user's willingness to take the initiative to measure, and making it difficult to effectively evaluate the user's health status. Utility Model Content

[0005] In view of this, the purpose of the utility model is to provide a wearable vascular elasticity detection and evaluation device to provide support for more accurate evaluation of arterial vascular elasticity, improve the utilization rate of the equipment and user compliance, and better detect and evaluate the user's health status.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A wearable vascular elasticity detection and evaluation device comprises a host and a wearable wristband, wherein the wearable wristband is used to fix the host to a human wrist, and the wearable vascular elasticity detection and evaluation device further comprises:

[0008] A detection module, wherein the detection module is disposed on the wearable wristband, and the position of the detection module corresponds to the radial artery and the vicinity of the radial artery on the human wrist;

[0009] A control module is disposed in the host, the control module is in communication with the detection module, and the control module is used to control the detection module to obtain a pulse wave signal according to a preset instruction to generate a pulse wave waveform.

[0010] Optionally, the detection module is a pressure detection module and / or a photoelectric detection module.

[0011] Optionally, the pressure detection module includes an inflatable airbag, a flexible pressure sensor and an inflation / deflation module, the flexible pressure sensor is arranged on the surface of the inflatable airbag facing the human wrist, and the position of the flexible pressure sensor corresponds to the radial artery and its vicinity of the human wrist, the inflation / deflation module is arranged in the host, the inflation / deflation module is communicatively connected to the control module, and the inflation / deflation module is connected to the inflatable airbag through an inflation / deflation pipeline.

[0012] Optionally, the pressure detection module includes one or more inflatable airbags that have finger-shaped protruding structures after inflation, and the inflatable airbags are only arranged at the radial artery and its accessories on the wearable wristband corresponding to the human wrist.

[0013] Optionally, the pressure detection module includes a plurality of the inflatable airbags, and the inflatable airbags are arranged in sequence along the extension direction of the radial artery of the human wrist.

[0014] Optionally, the inflatable airbags are distributed throughout the wearable wristband along an extension direction of the wearable wristband, and the flexible pressure sensor is arranged in an area of ​​the inflatable airbags facing the radial artery and its accessory position on the human wrist.

[0015] Optionally, the inflation and deflation module includes an air pump and an electromagnetic deflation valve, the inflation and deflation pipeline includes an inflation pipeline and a deflation pipeline, the air pump is connected to the inflation and deflation port of the inflatable airbag through the inflation pipeline, the electromagnetic deflation valve is connected to the inflation and deflation port of the inflatable airbag through the deflation pipeline, and the air pump and the electromagnetic deflation valve are respectively communicatively connected to the control module.

[0016] Optionally, the air charging and discharging pipeline is built into the wearable wristband.

[0017] Optionally, the photoelectric detection module is a photoelectric sensor.

[0018] Optionally, the wearable vascular elasticity detection and evaluation device also includes a display module and a power supply module arranged on the host, the display module is communicatively connected to the control module, and the power supply module is electrically connected to the control module, the display module and the detection module respectively.

[0019] It can be seen from the above technical scheme that an embodiment of the utility model provides a wearable vascular elasticity detection and evaluation device, which includes a host, a wearable wristband, a detection module and a control module, wherein the wearable wristband is used to fix the host to the human wrist, the detection module is arranged on the wearable wristband, and the position of the detection module corresponds to the radial artery and its vicinity on the human wrist; the control module is arranged in the host, the control module is communicated with the detection module, and the control module is used to control the detection module to obtain a pulse wave signal according to preset instructions to generate a pulse wave waveform.

[0020] When in use, the control module controls the detection module to collect the pulse wave at the radial artery according to the preset instructions. When the peripheral resistance of the human body and the degree of sclerosis of the blood vessel wall increase, the dynamic changes in the pulse wave waveform characteristics are reflected in the gradual decrease in the absolute height of the main wave. Secondly, the tidal wave (pre-wave of the dicrotic wave) gradually becomes obvious from being unclear, and its position relative to the main wave gradually increases, and it approaches the main wave from back to front and merges to varying degrees, and even exceeds the main wave. At the same time, the dicrotic wave and the dicrotic wave trough gradually merge into one. That is, as the hardness of blood vessels increases, the shape of the pulse wave, the number of peaks, the slope of the main wave, the width of the main wave, etc. have undergone significant changes. We can predict vascular sclerosis based on the characteristic changes of the pulse wave. The wearable vascular elasticity detection and evaluation device directly measures the radial artery pulse wave information, which is more accurate than the optical pulse waves of arterioles, capillaries or muscle tissues measured by PPG, and provides support for more accurate evaluation of arterial vascular elasticity. At the same time, the wearable vascular elasticity detection and evaluation device does not require the user to actively initiate the detection of the radial artery pulse wave, which can be actively initiated by the wearable vascular elasticity detection and evaluation device, thereby improving the user's compliance and the efficiency of equipment use, and can better detect and evaluate the user's health status. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 Schematic diagram of ECG and PPG waveforms;

[0023] Figure 2 This is a pulse wave diagram of a healthy human body;

[0024] Figure 3 It is the pulse wave waveform diagram under different vascular elasticity;

[0025] Figure 4A schematic diagram showing the comparison between the pulse wave waveform of a normal person and the pulse wave waveform of patients with different degrees of arteriosclerosis

[0026] Figure 5 A schematic diagram of the structure of a wearable vascular elasticity detection and evaluation device provided in an embodiment of the utility model;

[0027] Figure 6 This is a schematic diagram of the connection structure of various parts of the wearable vascular elasticity detection and evaluation device provided in an embodiment of the utility model.

[0028] In the figure:

[0029] 1 is the host; 2 is the wearable wristband; 3 is the detection module; 301 is the inflatable airbag; 302 is the air pump; 303 is the electromagnetic air release valve; 4 is the control module; 5 is the display module; and 6 is the power supply module. DETAILED DESCRIPTION

[0030] The core of the utility model is to provide a wearable vascular elasticity detection and evaluation device. The structural design of the wearable vascular elasticity detection and evaluation device enables it to provide support for more accurate evaluation of arterial vascular elasticity, improve the utilization rate of the equipment and user compliance, and better detect and evaluate the user's health status.

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] First, the relationship between the pulse wave shape and the degree of arteriosclerosis is introduced.

[0033] The pulse waveform of a healthy human body is as follows: Figure 2As shown. It can be seen from the figure that point b is the starting point of the pulse, that is, the starting point of the aorta to eject blood, which mainly reflects the situation of the blood vessel volume and pressure during the contraction period of the heart. Point c is the highest point of the pulse waveform and the point with the highest pressure in the blood vessel. This is the main wave, which is the curve that rises from the lowest pressure point to the highest pressure point and is the curve with the fastest rising speed. It reflects the rapid ejection of the ventricle. The pressure inside the artery rises rapidly and the capacity of the blood vessel expands rapidly. The speed of the rise of this curve is related to the strength of the ventricular ejection, the elasticity of the arterial blood vessels, and the resistance of the blood vessels to the ejection of blood. If the ejection force is large, the elasticity of the arterial blood vessels is small, and the resistance of the blood vessels is small, the slope is large; otherwise, the slope is small. Point d is the process of rapid decrease in the pressure and capacity in the blood vessel. The arrival of the replay front wave causes a short rise in the pressure and capacity in the blood vessel, forming a trough. Point e marks the cessation of ventricular ejection, also known as the tidal wave. It is located on the descending branch of the pulse wave curve and is located after the main wave and before the replay front wave. It is a reflection wave formed when the arteries expand and blood pressure drops rapidly during the period when the ventricles stop ejecting blood, and the blood in the arteries begins to flow in the reverse direction. It is mainly related to vascular elasticity and vascular resistance. Point f is the trough of the dicrotic wave, which is a notch wave composed of the ascending branch of the main wave and the descending branch of the dicrotic wave. It mainly reflects the time when the aorta empties blood under static pressure. It is the intersection of the systolic and diastolic periods of the heart and is easily affected by peripheral resistance. The elastic retraction wave of the aorta at point g is usually called the dicrotic wave. It is a small bulge located after the trough of the dicrotic wave. It reflects that when the heart stops ejecting blood and enters the diastolic period, the pressure in the ventricle drops rapidly, so that it is significantly lower than the pressure inside the aorta, and the blood inside the aorta begins to flow back to the heart. Due to the reverse flow of blood, the aortic valve closes quickly, and the blood flowing back quickly hits the closed aortic valve and is bounced back into the aorta, causing a short-term pressure rise in the aorta and an increase in the volume of the blood vessels. Therefore, a small wave appears in the middle section of the descending branch of the pulse wave, which is called the descending middle wave. Its changes mainly reflect the condition of the aortic valve, the elasticity of the blood vessels and the state of blood flow. hl represents the peak height of the main wave, which reflects the heart's ejection function and the compliance of the large arteries. h2 represents the height of the pre-wave of the dicrotic wave, that is, the height of the tidal wave. The compliance of the arterial blood vessels, the peripheral resistance and the tension of the arterial blood vessels are reflected. h3 represents the height of the trough of the dicrotic wave, which mainly reflects the peripheral resistance. The greater the peripheral resistance, the higher h3; conversely, the smaller the peripheral resistance, the lower h3.

[0034] Atherosclerosis develops slowly, and its symptoms are mild before clinical lesions appear. When the body's peripheral resistance and the degree of vascular wall hardening increase, the dynamic changes in the waveform characteristics are reflected in the gradual decrease in the absolute height of the main wave. Secondly, the tidal wave (pre-dixic wave) gradually becomes obvious, and its position relative to the main wave gradually increases, and it approaches the main wave from back to front and merges to varying degrees, and even exceeds the main wave. At the same time, the dicrotic wave and the dicrotic wave trough gradually merge into one. As the degree of arteriosclerosis increases, the pulse wave shape changes like Figure 3 shown.

[0035] Depend on Figure 3 It can be seen that the regular dynamic changes in the height of the tidal wave can best reflect the main characteristics of arteriosclerosis expressed by the pulse wave. It is also an important indicator for clinically judging the size of vascular resistance and the level of arterial elasticity.

[0036] Figure 4 This further illustrates the correlation between arteriosclerosis and pulse waveform. Figure 4 As shown in (a), the main wave of a normal person appears high and narrow, the tidal wave after the main wave is not obvious, and the dicrotic wave is more obvious. The clinical manifestations are low vascular resistance and good arterial elasticity; Figure 4 (b) is the pulse waveform of a patient with mild arteriosclerosis. In patients with mild arteriosclerosis, the tidal wave after the main wave gradually rises, and the dicrotic wave is not obvious. The clinical manifestations are moderate vascular resistance and arterial elasticity. Figure 4 (c) is the pulse waveform of a patient with moderate arteriosclerosis. The tidal wave is prominent after the main wave of the patient with moderate arteriosclerosis, and is fused with the main wave and the dicrotic wave to varying degrees. The dicrotic wave becomes flat and difficult to distinguish. The clinical manifestations are poor vascular resistance and arterial elasticity. Figure 4 (c) is the pulse waveform of a patient with severe arteriosclerosis. The tidal wave after the main wave merges with the main wave and exceeds the main wave. The dicrotic wave is also mixed with the tidal wave. The clinical manifestations are poor vascular resistance and arterial elasticity.

[0037] In summary, as the hardness of blood vessels increases, the shape, number of peaks, main wave slope, and main wave width of the pulse wave change significantly. We can predict vascular hardening based on the characteristic changes in the pulse wave waveform.

[0038] Based on the above principle, the present utility model discloses a wearable vascular elasticity detection and evaluation device. Figure 5 , Figure 5 This is a schematic structural diagram of a wearable vascular elasticity detection and evaluation device provided in an embodiment of the present utility model.

[0039] The wearable vascular elasticity detection and evaluation device comprises a host 1, a wearable wristband 2, a detection module 3 and a control module 4.

[0040] Among them, the wearable wristband 2 is used to fix the host 1 to the human wrist, the detection module 3 is arranged on the wearable wristband 2, and the position of the detection module 3 corresponds to the radial artery and its vicinity on the human wrist, the detection module 3 includes but is not limited to the photoelectric detection module 3 and the pressure detection module 3, that is, the detection module 3 can be composed of at least one of the photoelectric detection module 3 and the pressure detection module 3, and only one of the photoelectric detection module 3 and the pressure detection module 3 is needed to complete the detection of the pulse wave; the control module 4 is arranged in the host 1, the control module 4 is communicated with the detection module 3, and the control module 4 is used to control the detection module 3 to obtain the pulse wave signal according to the preset instructions to generate a pulse wave waveform.

[0041] When applied, the control module 4 controls the detection module 3 to collect the pulse wave at the radial artery according to the preset instructions. When the peripheral resistance of the human body and the degree of sclerosis of the vascular wall increase, the dynamic change of the pulse wave waveform characteristic quantity is reflected in the gradual reduction of the absolute height of the main wave. Secondly, the tidal wave (pre-wave of the dicrotic wave) gradually becomes obvious from being not obvious, and its position relative to the main wave also gradually rises, and approaches the main wave from back to front and merges to varying degrees, even exceeding the main wave. At the same time, the dicrotic wave and the dicrotic wave trough also gradually merge into one. That is, along with the increase of vascular hardness, the shape of the pulse wave, the number of crests, the slope of the main wave, the width of the main wave, etc., have changed significantly, and we can predict vascular sclerosis according to the characteristic changes of the pulse wave.

[0042] Compared with the prior art, the wearable vascular elasticity detection and evaluation device provided in the embodiment of the utility model directly measures the radial artery pulse wave information, and only needs one of the photoelectric detection module 3 and the pressure detection module 3 to complete the detection of the pulse wave. Compared with the existing PWV technology that requires at least two sensors, ECG and PPG, or a 2-way PPG sensor solution, fewer sensors are required, which is more conducive to cost control. At the same time, compared with the optical pulse wave of arterioles, capillaries or muscle tissues measured by PPG, it is more accurate and has more medical value, and can provide support for more accurate evaluation of arterial vascular elasticity. At the same time, the above-mentioned wearable vascular elasticity detection and evaluation device does not require the user to actively initiate the detection of the radial artery pulse wave, which can be actively initiated by the wearable vascular elasticity detection and evaluation device, thereby improving the user's compliance and the efficiency of equipment use, and can better detect and evaluate the user's health status.

[0043] In a specific embodiment of the present invention, Figure 6 As shown, the pressure detection module 3 includes an inflatable airbag 301, a flexible pressure sensor and an inflation / deflation module. The flexible pressure sensor is arranged on the surface of the inflatable airbag 301 facing the human wrist, and the position of the flexible pressure sensor corresponds to the radial artery of the human wrist and its vicinity. The inflation / deflation module is arranged in the host 1, and the inflation / deflation module is communicatively connected with the control module 4, and the inflation / deflation module is connected with the inflatable airbag 301 through an inflation / deflation pipeline.

[0044] The above-mentioned inflatable airbag 301 can be arranged only in the part of the wearable wristband 2 corresponding to the radial artery, or a full wristband wrapping design similar to a wrist blood pressure monitor cuff can be adopted. Even if the inflatable airbag 301 is distributed throughout the wearable wristband 2 along the extension direction of the wearable wristband 2, a flexible pressure sensor is set in the area where the inflatable airbag 301 faces the radial artery of the human wrist and its accessories.

[0045] like Figure 5 As shown, in an embodiment of the utility model, the inflatable airbag 301 in the pressure detection module 3 adopts a local arrangement scheme, which has the least impact on normal wearing. In this embodiment, the pressure detection module 3 includes one or more inflatable airbags 301 that have a finger-shaped protrusion structure after inflation. The inflatable airbag 301 is only arranged at the radial artery and its accessory position on the wearable wristband 2 corresponding to the human wrist.

[0046] To further optimize the above technical solution, in an embodiment of the utility model, the pressure detection module 3 includes a plurality of inflatable airbags 301, and the inflatable airbags 301 are arranged in sequence along the extension direction of the radial artery of the human wrist to more accurately measure the pulse wave signal.

[0047] like Figure 6 As shown, in an embodiment of the utility model, the above-mentioned inflation and deflation module includes an air pump 302 and an electromagnetic deflation valve 303, the inflation and deflation pipelines include an inflation pipeline and a deflation pipeline, the air pump 302 is connected to the inflation and deflation port of the inflatable airbag 301 through the inflation pipeline, the electromagnetic deflation valve 303 is connected to the inflation and deflation port of the inflatable airbag 301 through the deflation pipeline, the air pump 302 and the electromagnetic deflation valve 303 are respectively communicated with the control module 4.

[0048] Preferably, the charging and discharging pipelines are built into the wearable wristband 2, which not only makes the overall appearance of the device more simple and beautiful, but also avoids the problem of easy damage caused by the exposed charging and discharging pipelines, making the wearable vascular elasticity detection and evaluation device more reliable.

[0049] In the embodiment of the utility model, the working process of the wearable vascular elasticity detection and evaluation device using the pressure detection module 3 is as follows:

[0050] The control module 4 controls the inflation and deflation module to inflate the inflatable airbag 301 according to preset instructions, so that the inflatable airbag 301 squeezes the human wrist to closely fit the flexible pressure sensor to the surface of the human wrist corresponding to the radial artery and its vicinity.

[0051] The control module 4 acquires the detection value of the flexible pressure sensor in real time. When the acquired minimum detection value is greater than or equal to the preset pressure value, the control module 4 starts to collect a preset number of periodic pulse wave signals and generates a pulse wave waveform.

[0052] Since the pulse wave will change due to the immobility of the human body's peripheral resistance, in order to more accurately realize the pulse wave waveform, the working process of the wearable vascular elasticity detection and evaluation device using the pressure detection module 3 also includes:

[0053] The inflatable airbag 301 is pressurized in a stepwise manner, and a preset number of periodic pulse wave signals are collected after each pressurization to generate a pulse wave waveform after each pressurization. In this way, pulse wave waveforms of various forms can be obtained to provide more references for subsequent evaluation and analysis.

[0054] The control module 4 controls the inflation and deflation module to deflate the inflatable airbag 301 to restore the normal wearing state, and the vascular elasticity detection and evaluation is completed.

[0055] In another embodiment of the present invention, the photoelectric detection module 3 is a photoelectric sensor, which is used to detect the radial artery pulse wave.

[0056] like Figure 6 As shown, the wearable vascular elasticity detection and evaluation device also includes a display module 5 and a power supply module 6 arranged on the host 1. The display module 5 is communicatively connected to the control module 4, and the power supply module 6 is electrically connected to the control module 4, the display module 5 and the detection module 3 respectively. The display module 5 is used to display the measured pulse wave waveform to the user and to feed back the analysis and evaluation results. In addition to the above-mentioned display module 5 and power supply module 6, the host 1 can also integrate functional modules such as human-computer interaction, posture detection, and Bluetooth communication.

[0057] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0058] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications 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 invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will be applied to the widest range consistent with the principles and novel features disclosed herein.

Claims

1. A wearable vascular elasticity detection and evaluation device, comprising a host and a wearable wristband, wherein the wearable wristband is used to fix the host to a human wrist, characterized in that: The wearable vascular elasticity detection and evaluation device also includes: A detection module, wherein the detection module is disposed on the wearable wristband, and the position of the detection module corresponds to the radial artery and the vicinity of the radial artery on the human wrist; A control module is disposed in the host, the control module is in communication with the detection module, and the control module is used to control the detection module to obtain a pulse wave signal according to a preset instruction to generate a pulse wave waveform.

2. The wearable vascular elasticity detection and evaluation device according to claim 1, characterized in that: The detection module is a pressure detection module and / or a photoelectric detection module.

3. The wearable vascular elasticity detection and evaluation device according to claim 2, characterized in that: The pressure detection module includes an inflatable airbag, a flexible pressure sensor and an inflation / deflation module. The flexible pressure sensor is arranged on the surface of the inflatable airbag facing the human wrist, and the position of the flexible pressure sensor corresponds to the radial artery and its vicinity on the human wrist. The inflation / deflation module is arranged in the host, the inflation / deflation module is communicatively connected with the control module, and the inflation / deflation module is connected with the inflatable airbag through an inflation / deflation pipeline.

4. The wearable vascular elasticity detection and evaluation device according to claim 3, characterized in that: The pressure detection module includes one or more inflatable airbags that present finger-shaped protruding structures after being inflated. The inflatable airbags are only arranged at the radial artery and its accessories on the wearable wristband corresponding to the human wrist.

5. The wearable vascular elasticity detection and evaluation device according to claim 4, characterized in that: The pressure detection module includes a plurality of inflatable airbags, and the inflatable airbags are arranged in sequence along the extension direction of the radial artery of the human wrist.

6. The wearable vascular elasticity detection and evaluation device according to claim 3, characterized in that: The inflatable airbags are distributed throughout the wearable wristband along the extension direction of the wearable wristband, and the flexible pressure sensor is arranged in the area where the inflatable airbags face the radial artery and its attachment positions on the human wrist.

7. The wearable vascular elasticity detection and evaluation device according to any one of claims 3 to 6, characterized in that: The inflation and deflation module includes an air pump and an electromagnetic deflation valve, the inflation and deflation pipeline includes an inflation pipeline and a deflation pipeline, the air pump is connected to the inflation and deflation port of the inflatable airbag through the inflation pipeline, the electromagnetic deflation valve is connected to the inflation and deflation port of the inflatable airbag through the deflation pipeline, and the air pump and the electromagnetic deflation valve are respectively communicatively connected to the control module.

8. The wearable vascular elasticity detection and evaluation device according to any one of claims 3 to 6, characterized in that: The gas charging and discharging pipeline is built into the wearable wristband.

9. The wearable vascular elasticity detection and evaluation device according to claim 2, characterized in that: The photoelectric detection module is a photoelectric sensor.

10. The wearable vascular elasticity detection and evaluation device according to any one of claims 1 to 6 and 9, characterized in that: The wearable vascular elasticity detection and evaluation device also includes a display module and a power supply module arranged on the host, the display module is communicatively connected to the control module, and the power supply module is electrically connected to the control module, the display module and the detection module respectively.

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