Wearable pathway maturation promoting and flow detecting device for dialysis pathway

Abstract

The invention relates to the technical field of passage maturation promoting devices, in particular to a wearable passage maturation promoting and flow detecting device for a dialysis passage, which comprises an oversleeve which can be worn on an arm and is provided with a hole at a position corresponding to arteriovenous fistula of a human body, the miniature blood flow monitor is used for monitoring the blood flow at the arteriovenous fistula position of a human body and is detachably mounted on the hole of the oversleeve, and one end of the interior of the oversleeve is provided with an air bag which is used for hooping an arm after being inflated; massage air bags which periodically extrude muscles on the two sides of the arteriovenous fistula through periodic inflation and deflation are symmetrically arranged in the sleeve and located on the two sides of the hole, the device can be worn on the arm of the human body, passive training on veins at the arteriovenous fistula position is achieved, and therefore the fatigue feeling of a patient is reduced, and the training efficiency is improved. Meanwhile, the micro blood flow monitor can monitor the blood flow at the arteriovenous fistula position, so that the patient can know the arteriovenous fistula condition in real time.

Description

Technical Field

[0001] The present invention relates to the technical field of access maturation promoting devices, and in particular to a wearable access maturation promoting and flow detection device for a dialysis access. Background Art

[0002] The dialysis access is also known as an artificial kidney and is an important "lifeline" for chronic kidney disease patients undergoing hemodialysis. It refers to the channel that draws blood out during hemodialysis, purifies it on the dialyzer, and then returns it to the patient's body. Dialysis treatment requires blood to circulate outside the body, so there needs to be a pathway to drain the blood and ensure sufficient blood flow. This pathway is the vascular access of the dialysis patient, which is the basic guarantee for the smooth conduct of hemodialysis.

[0003] There are two types of dialysis access: temporary vascular access and permanent vascular access. Temporary vascular access is a transitional method that can be established quickly, but can only be used in the short term. Permanent vascular access is the best choice for long-term dialysis patients, including autologous arteriovenous fistula, artificial blood vessels and long-term venous catheterization. Autologous arteriovenous fistula (AVF) is currently recognized as the best and most commonly used vascular access because of its long service life and few complications. Autologous arteriovenous fistula is a surgical connection between the artery and vein in the arm to form an artificial blood flow short circuit.

[0004] An arteriovenous fistula that has just undergone surgery cannot be used for dialysis immediately. It still needs about 2 to 3 months to develop, so that the venous lumen can expand, the wall can thicken, and the venous blood flow can increase, so that sufficient blood flow can be provided to meet the requirements of hemodialysis more than once a week. Only at this time can the arteriovenous fistula be considered mature. In order to ensure that the arteriovenous fistula matures quickly, doctors generally recommend that patients do some exercises that can promote the maturation of the arteriovenous fistula, such as the common abdominal band to tie the arm, and then do the rubber ball gripping action to expand the vein. This kind of long-term active exercise will cause soreness in the palm, and it is not suitable for patients with low cooperation (such as children). In the process of maturation of the arteriovenous fistula, the patient cannot know the maturity status of his own arteriovenous fistula. Based on the above situation, it is necessary to design a wearable dialysis access maturation-promoting access and flow detection device to solve the above problems. Summary of the invention

[0005] The present invention provides a wearable device for promoting access maturation and detecting flow in a dialysis access, which can be worn on the arm of a human body to achieve passive training of the veins at the location of an arteriovenous fistula, thereby reducing the patient's fatigue. At the same time, a micro blood flow monitor can monitor the blood flow at the location of an arteriovenous fistula, so that the patient can know the status of his or her own arteriovenous fistula in real time.

[0006] The technical problem solved by the present invention is achieved by adopting the following technical solutions:

[0007] The present invention provides a wearable device for promoting the maturation of a dialysis access and detecting flow rate, comprising a sleeve that can be worn on an arm and has a hole corresponding to the position of an arteriovenous fistula of a human body, and also comprising a micro blood flow monitor that is used to monitor the blood flow at the position of the arteriovenous fistula of a human body and is detachably installed on the hole of the sleeve, one end of the sleeve is provided with an air bag that can tighten and restrain the arm after being inflated, and massage air bags that are symmetrically provided inside the sleeve and on both sides of the hole and can periodically squeeze the muscles on both sides of the arteriovenous fistula by periodically inflating and deflating air.

[0008] Preferably, it also includes a controller and an air pump for inflating the restraining airbag and the massage airbag through pipelines, the restraining airbag is provided with a first air pressure sensor for monitoring the air pressure inside the restraining airbag, and the massage airbag is provided with a second air pressure sensor for monitoring the air pressure inside the massage airbag, the output ends of the first air pressure sensor and the second air pressure sensor are both connected to the input end of the controller for providing an air pressure signal to the controller, the output end of the controller is used to output a control signal according to the received air pressure signal, and the control signal is used to control the operation of the air pump.

[0009] Preferably, there is one air pump, and the output end of the air pump has two branch pipelines which are respectively connected to the interior of the restraint airbag and the massage airbag. A first solenoid valve is provided on the branch pipeline between the air pump and the restraint airbag, and a second solenoid valve is provided on the branch pipeline between the air pump and the massage airbag. The controller realizes inflation and deflation of the restraint airbag by controlling the coordinated action of the air pump and the first solenoid valve, and the controller realizes inflation and deflation of the massage airbag by controlling the coordinated action of the air pump and the second solenoid valve.

[0010] Preferably, there are two air pumps, which are respectively a first air pump and a second air pump. The first air pump is connected to the restraint airbag via a pipeline equipped with a first solenoid valve, and the second air pump is connected to the massage airbag via a pipeline equipped with a second solenoid valve. The controller inflates and deflates the restraint airbag by controlling the actions of the first air pump and the first solenoid valve, and inflates and deflates the massage airbag by controlling the actions of the second air pump and the second solenoid valve.

[0011] Preferably, a rubber ring is disposed at the position of the sleeve hole, a concave ring groove is provided on the inner wall of the rubber ring, and a convex ring matching with a concave ring is provided on the outer wall of the micro blood flow monitor.

[0012] Preferably, the micro blood flow monitor has a micro sensor for monitoring blood flow and a communication module capable of realizing information exchange with an external terminal.

[0013] Preferably, a vibration device controlled by a controller is also provided on the outer wall of the sleeve.

[0014] Preferably, the inner wall of the sleeve is also provided with a heating device which is controlled by a controller.

[0015] The beneficial effects of the present invention are as follows: by setting a restraining airbag, the arm position of the human body can be tied up, so that the veins in the arm position of the human body are kept in a filled state; by setting a massage airbag, the muscles near the arteriovenous fistula can be massaged to promote local blood circulation near the arteriovenous fistula; at the same time, the massage stimulation effect can accelerate blood flow and increase blood flow, thereby improving the blood supply to the arteriovenous fistula site; a good blood supply is helpful for the nutrition and repair of the blood vessel wall; during the massage process, the blood vessel is squeezed and pulled by external force; this mechanical stimulation can cause relaxation of the vascular smooth muscle, thereby expanding the vascular lumen, and further promoting the maturation of the arteriovenous fistula.

[0016] By setting a controller, an air pressure sensor, an electromagnetic valve, etc., the gas pressure of the restraint airbag and the massage airbag can be controlled, thereby controlling the massage amplitude and the restraint strength.

[0017] The micro blood flow monitor is detachably connected to the hole, so that only training can be performed in the initial stage after surgery without installing the micro blood flow monitor, thereby avoiding compression of the arteriovenous fistula. In the later training process, when the surgical wound has recovered and stabilized, and the blood flow monitoring of the arteriovenous fistula is needed, the micro blood flow monitor can be installed.

[0018] The cuff is provided with a vibration device and a heating device, which can achieve vibration relaxation and auxiliary heating near the human arteriovenous fistula, both of which can achieve the effect of promoting the maturation of the arteriovenous fistula. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention 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 present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the present invention:

[0021] Figure 2 It is a schematic diagram of the structure of the micro blood flow monitor of the present invention being separated from the cuff;

[0022] Figure 3It is a schematic diagram of the installation position of the airbag inside the sleeve of the present invention;

[0023] Figure 4 It is a front perspective view of the sleeve of the present invention after being spread out;

[0024] Figure 5 This is a rear view of the sleeve of the present invention after it is spread out;

[0025] Figure 6 The schematic diagram of the present invention is a single air pump to inflate the restraint airbag and the massage airbag;

[0026] Figure 7 The schematic diagram of the two air pumps of the present invention respectively inflating the restraint airbag and the massage airbag;

[0027] Figure 8 The schematic diagram of the circuit for controlling the electromagnetic valve and the air pump by the controller of the present invention;

[0028] Fig. 9 It is a structural schematic diagram of the solenoid valve of the present invention;

[0029] Fig.10 is a schematic block diagram of the composition of the micro blood flow monitor of the present invention;

[0030] Fig.11 It is a schematic diagram of the present invention performing active motion with a rubber ball.

[0031] In the figure, 1. sleeve; 2. restraint airbag; 3. first massage airbag; 4. second massage airbag; 5. first air pump; 6. second air pump; 7. pipeline; 8. controller; 9. abdominal belt; 10. rubber ring; 1001. groove ring; 11. micro blood flow monitor; 1101. convex ring; 1102. micro sensor; 1103. communication module; 12. shell; 13. hole; 14. heating device; 15. first solenoid valve; 16. second solenoid valve; 17. first air pressure sensor; 18. second air pressure sensor; 19. electromagnet; 20. valve stem; 21. movable plugging head; 22. spring; 23. rubber ball; 24. finger sleeve. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below with reference to specific diagrams.

[0033] For patients with chronic kidney disease, the dialysis access is equivalent to the patient's life channel. Generally, for patients who need dialysis treatment, autologous venous fistula is often used as the dialysis access, that is, the artery and vein in the arm are directly connected through surgery. During the dialysis process, the blood is drawn out and purified on the dialyzer before being returned to the patient's body. After the arteriovenous fistula is established, it usually takes some time for the arteriovenous fistula to mature. In order to promote the maturation speed of the arteriovenous fistula, doctors often require patients to exercise, such as tying the arm with a strap and then putting a rubber ball in the palm of the hand. When the patient's arm is tied, the blood return in the veins in the arm is blocked, causing the veins in the arm to fill. Then, when the palm moves, it drives the muscle tissue in the arm to squeeze the veins, thereby achieving sufficient stimulation of the veins. Under long-term stimulation, the lumen of the veins can expand and the wall of the veins thicken, allowing them to mature sooner. However, some existing patients have poor cooperation and cannot persist for a long time, and long-term exercise causes soreness in the arms and palms. Based on this problem, the present invention provides a wearable dialysis access maturation-promoting and flow detection device to enable patients to perform passive training of their arteriovenous fistulas after wearing it, thereby achieving the effect of promoting the early maturation of the patient's arteriovenous fistula.

[0034] refer to Figure 1-Figure 3 The present invention provides a wearable device for promoting the maturation of a dialysis access and detecting a flow rate, comprising a sleeve 1, which can be worn on an arm. Specifically, the sleeve 1 can be designed to be elastic, and can be adapted to be worn on arms of different sizes by its own elasticity. It can also be tightened by a corset 9 (usually locked with Velcro or a hook) as shown in the figure to achieve the wearing of arms of different sizes. An airbag is arranged inside the sleeve 1, wherein the airbag has two types, one of which is a restraining airbag 2, which is installed at one end of the sleeve 1. After the sleeve 1 is worn, the restraining airbag 2 basically forms a ring to cover the arm, and the other type of airbag is a massage airbag, which is located on both sides of the sleeve 1 (such as Figure 3In the figure, the two massage airbags are respectively the first massage airbag 33 and the second massage airbag 44, which are collectively referred to as massage airbags for the convenience of description below. After wearing the sleeve 1, the massage airbags on both sides correspond to the positions of the arteriovenous fistula on both sides of the human arm. After the human body wears the sleeve 1, the arm is tightened by controlling the restraining airbag 2 to always be inflated, so as to keep the veins on the arm in a filled state. Then, the massage airbag is controlled to be inflated and deflated periodically to massage the muscle tissue on both sides of the arteriovenous fistula on the arm. The muscle contraction and relaxation periodically squeeze the veins to accelerate blood circulation, which will produce a certain pressure on the fistula and the blood vessel walls around it, thereby stimulating the thickening and expansion of the blood vessel walls. In order to facilitate technical personnel in this field to more intuitively know the positions of the massage airbag and the restraining airbag 2, reference can be made to Figure 4 , which is a schematic diagram of the sleeve 1 being unfolded, the restraining airbag 2 occupies the interior of the sleeve 1 horizontally, and the two massage airbags occupy the interior of the sleeve 1 vertically. The present invention also provides a micro blood flow monitor 11 for monitoring blood flow on the sleeve 1, so that the patient can know in real time whether his or her arteriovenous fistula has reached the mature standard during the long-term training process. Considering that in the early stage of arteriovenous fistula surgery, the position of the arteriovenous fistula should be avoided from vertical reciprocating squeezing, and generally when monitoring blood flow, it is necessary to ensure that the arm is stable for monitoring, so the micro blood flow monitor 11 is installed on the sleeve 1 in a detachable manner, such as Figure 2 In the embodiment, a hole 13 corresponding to the position of the arteriovenous fistula of the human body is opened on the sleeve 1, and the micro blood flow monitor 11 is detachably installed on the sleeve 1. When only exercise is needed and the blood flow monitoring of the arteriovenous fistula position is not needed, there is no need to install the micro blood flow monitor 11 at the hole 13 position.

[0035] Further, such as Figure 3 and Figure 8In the embodiment, the massage airbag and the restraint airbag 2 are both supplied with air by an air pump, which is fixed on the sleeve 1 and is covered with a shell 12 for protection. A controller 8 is provided to control the air pump to inflate the massage airbag and the restraint airbag 2. A first air pressure sensor 17 is provided inside the restraint airbag 2, and a second air pressure sensor 18 is provided inside the massage airbag. When the restraint airbag 2 is inflated, the controller 8 controls the air pump to inflate the restraint airbag 2. As the restraint airbag 2 gradually expands, the value of the first pressure sensor inside the restraint airbag 2 increases. When the first pressure sensor detects that the gas pressure inside the restraint airbag 2 reaches the set value, the controller 8 stops the air pump from inflating the restraint airbag 2 to adjust the arm position. The massage airbag is tightened to keep the veins full. When the massage airbag is inflated, the controller 8 controls the air pump to inflate the inside of the massage airbag. When the inside of the massage airbag gradually expands, the gas pressure signal monitored by the second air pressure sensor 18 becomes larger and larger. When the second air pressure sensor 18 monitors that the gas pressure inside the massage airbag reaches the set value, the controller 8 controls the air pump to stop inflating the massage airbag. At the same time, the controller 8 controls other electronic components (such as the solenoid valve below) to deflat the massage airbag. After the gas is released, the gas pressure inside the massage airbag decreases. When the gas pressure inside the massage airbag decreases to the set value, the controller 8 controls the air pump to inflate the inside of the massage airbag, thereby realizing periodic inflation and deflation to drive the muscles near the arteriovenous fistula to move.

[0036] Furthermore, in order to realize the cooperation between the restraining airbag 2 and the massage airbag mentioned above, the number of the air pump can be one, such as Figure 6 As shown, an air pump is used to control the restraining airbag 2 and the massage airbag to cooperate to promote the maturation of the arteriovenous fistula. The air pump has an output end with two branch pipelines 7, one of which is connected to the restraining airbag 2 to supply air to the inside of the restraining airbag 2, and the other branch pipeline 7 is connected to the massage airbag to supply air to the inside of the massage airbag. A first solenoid valve 15 is provided on the branch pipeline 7 between the air pump and the restraining airbag 2. During the inflation process, the first solenoid valve 15 is in an open state, and the branch pipeline 7 between the air pump and the restraining airbag 2 is in a passage state. When the restraining airbag 2 is inflated, the first solenoid valve 15 is in an open state. When the gas pressure inside the bag 2 reaches the set value, the first solenoid valve 15 is closed. At this time, the branch pipeline 7 between the air pump and the restraining airbag 2 is in an open circuit state to maintain the gas pressure of the restraining airbag 2 and tighten the arm. A second solenoid valve 16 is arranged on the branch pipeline 7 between the air pump and the massage airbag. During the process of inflating the inside of the massage airbag, the second solenoid valve 16 is opened, and the branch pipeline 7 between the air pump and the massage airbag is in a passage state. When the pressure inside the massage airbag reaches the set value, the controller 8 controls the second solenoid valve 16 to operate to deflate the massage airbag.

[0037] It is easy to see from the above description that the first solenoid valve 15 is only used to control the passage or disconnection state of the branch pipeline 7 between the air pump and the restraint airbag 2, while the second solenoid valve 16 needs to control the branch pipeline 7 between the air pump and the massage airbag to be in the passage state when the massage airbag is inflated, and it is also necessary to assist the massage airbag in exhausting when the massage airbag is exhausted, so the second solenoid valve 16 is preferably selected as follows Fig. 9 The three-way solenoid valve shown in the figure has the following principle: Fig. 9 As shown in a, port A is the gas input port provided by the air pump, port B is the gas output port connected to the massage airbag, and port C is the exhaust port. The central cavity of the three-way solenoid valve has a valve stem 20, a spring 22 and a movable plugging head 21. An electromagnet 19 is arranged on one side wall of the central cavity. The movable plugging head 21 is a material that can repel each other with the electromagnet 19 after being energized. During the inflation of the massage airbag, the gas needs to be transferred from port A to port B. At this time, the electromagnet 19 is in an unpowered state, and the movable plugging head 21 is at the end of the valve stem 20, closing port B and port C. At the same time, port A and port B are in a passage state. When the inside of the massage airbag needs to be deflated, the gas needs to move from port B to port C. Fig. 9 As shown in Fig. b, the electromagnet 19 is energized, and the movable plugging head 21 is subjected to the repulsive force of the electromagnet 19, and slides the compression spring 22 on the valve stem 20 to move between port A and port B. At this time, port A and port B are closed, and port B and port C are opened, and the gas inside the massage airbag is discharged. The first solenoid valve 15 mentioned above can only adopt a two-way mode, that is, only port A and port B, or port C is in a closed state and is only used to control the connection between port A and port B. It should be noted that the above description is only an example of an implementation method of the second solenoid valve and the first solenoid valve, and it can also be implemented by solenoid valves with other different structures, which will not be elaborated here.

[0038] In order to realize the mutual cooperation between the massage airbag and the restraint airbag 2, the number of air pumps can also be two, such as Figure 7 In the manner shown, the two air pumps are respectively the first air pump 5 and the second air pump 6. The first air pump 5 is connected to the restraining airbag 2 via the pipeline 7 equipped with the first solenoid valve 15, and the second air pump 6 is connected to the massage airbag via the pipeline 7 equipped with the second solenoid valve 16. That is, when the restraining airbag 2 is inflated, the controller 8 controls the first air pump 5 to work and the first solenoid valve 15 to be in an open state, so as to realize the inflation of the restraining airbag 2. When the massage airbag is inflated, the controller 8 controls the second air pump 6 to work, and at the same time controls the passage between the A port and the B port of the second solenoid valve 16 mentioned above to realize inflation. When the massage airbag is deflated, the second air pump 6 stops working, and at the same time the second solenoid valve 16 is actuated, and the controller 8 controls the passage between the B port and the C port, so that the massage airbag is deflated.

[0039] like Figure 2 As shown, the detachable connection method between the micro blood flow monitor 11 and the cuff 1 mentioned above can be that a rubber ring 10 is fixed at the position of the hole 13 of the cuff 1, a concave ring groove is provided on the inner wall of the rubber ring 10, and a convex ring 1101 is provided on the outer wall of the micro blood flow monitor 11, and the micro blood flow monitor 11 is installed by clamping the convex ring 1101 on the concave ring groove.

[0040] Further, such as Fig.10 As shown, the micro blood flow monitor 11 for monitoring blood flow is an existing technology. The working principle of the micro blood flow monitor 11 is mainly based on physical principles such as ultrasound, laser or electromagnetic. The blood flow condition is reflected by measuring the signal changes generated by the blood flow. It has been used in the market. For example, for the current relatively high-end smart watches, the current blood flow condition can be indirectly obtained by internally monitoring the heart rate and blood oxygen saturation. Since the present invention does not innovate the principle of monitoring blood flow by the micro blood flow monitor 11, and it is an existing technology, it will not be elaborated here. In addition to the micro sensor 1102 for collecting human body parameters, the micro blood flow monitor 11 of the present invention also includes a communication module 1103. The communication module 1103 can communicate with an external terminal to realize data exchange, which is convenient for people to view on mobile phones or computers.

[0041] Furthermore, a vibration device is provided on the sleeve 1 and is controlled by the controller 8. When the massage airbag is not used to massage the muscles, the muscles can also be vibrated by starting the vibration device. This method has less stimulation to the muscles and veins and is suitable for a period of time after the operation is completed to avoid large muscle activity, which may lead to instability and damage of the wound at the arteriovenous fistula. The vibration device can be implemented using a miniature vibration motor.

[0042] Further, such as Figure 5 As shown, a heating device 14 operated by the controller 8 is also provided on the inner wall of the sleeve 1 (the side attached to the skin). The heating device 14 can be a heating wire attached to the inner wall of the sleeve 1. By heating, it can also promote the dilation of blood vessels. When the arteriovenous fistula wound has not completely recovered, low-intensity stimulation can be achieved through the cooperation of the vibration device and the heating device 14, thereby achieving the effect of promoting the maturation of the arteriovenous fistula.

[0043] It should be further explained that the present invention is not limited to the above working process during use. Fig.11 As shown, it can also tighten the arm only by inflating the restraining airbag 2, so that the veins on the arm remain filled, and then the palm of the hand can achieve active movement by holding the rubber ball 23, that is, when only the restraining airbag is working, the wearable dialysis access maturation-promoting and flow detection device plays the role of an abdominal belt. Fig.11 A finger sleeve 24 is provided on the outer wall of the middle rubber ball 23 to prevent the rubber ball 23 from falling off the palm.

[0044] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A wearable device for promoting the maturation of a dialysis access and detecting flow rate, comprising a sleeve (1) that can be worn on an arm and has a hole (13) corresponding to the position of an arteriovenous fistula of a human body, characterized in that: It also includes a micro blood flow monitor (11) for monitoring the blood flow at the position of the arteriovenous fistula of the human body and is detachably mounted on the hole (13) of the sleeve (1); one end of the sleeve (1) is provided with a restraining air bag (2) for ring-shaped tightening of the arm after inflation; and massage air bags are symmetrically arranged inside the sleeve (1) and on both sides of the hole (13) for periodically squeezing the muscles on both sides of the arteriovenous fistula by periodic inflation and deflation.

2. A wearable device for promoting dialysis access maturation and flow detection according to claim 1, characterized in that: The invention also comprises a controller (8) and an air pump for inflating the restraining airbag (2) and the massage airbag through a pipeline (7); a first air pressure sensor (17) for monitoring the air pressure inside the restraining airbag (2); a second air pressure sensor (18) for monitoring the air pressure inside the massage airbag; the output ends of the first air pressure sensor (17) and the second air pressure sensor (18) are connected to the input end of the controller (8) for providing an air pressure signal to the controller (8); the output end of the controller (8) is used to output a control signal according to the received air pressure signal; the control signal is used to control the operation of the air pump.

3. A wearable device for promoting dialysis access maturation and detecting flow rate according to claim 2, characterized in that: The number of the air pump is one, and the output end of the air pump has two branch pipelines (7) which are respectively connected to the inside of the restraining airbag (2) and the massage airbag. The branch pipeline (7) between the air pump and the restraining airbag (2) is provided with a first solenoid valve (15), and the branch pipeline (7) between the air pump and the massage airbag is provided with a second solenoid valve (16). The controller (8) controls the air pump to cooperate with the first solenoid valve (15) to realize the inflation and deflation of the restraining airbag (2), and the controller (8) controls the air pump to cooperate with the second solenoid valve (16) to realize the inflation and deflation of the massage airbag.

4. A wearable device for promoting dialysis access maturation and detecting flow rate according to claim 2, characterized in that: The number of the air pumps is two, and the two air pumps are respectively a first air pump (5) and a second air pump (6); the first air pump (5) is connected to the restraining airbag (2) via a pipeline (7) equipped with a first solenoid valve (15); the second air pump (6) is connected to the massage airbag via a pipeline (7) equipped with a second solenoid valve (16); the controller (8) realizes the inflation and deflation of the restraining airbag (2) by controlling the actions of the first air pump (5) and the first solenoid valve (15); and the controller (8) realizes the inflation and deflation of the massage airbag by controlling the actions of the second air pump (6) and the second solenoid valve (16).

5. A wearable device for promoting dialysis access maturation and detecting flow rate according to claim 1, characterized in that: A rubber ring (10) is arranged at the position of the hole (13) of the sleeve (1), and a concave ring groove is provided on the inner wall of the rubber ring (10). A convex ring (1101) is arranged on the outer wall of the micro blood flow monitor (11) to match the concave ring (1001).

6. A wearable device for promoting dialysis access maturation and detecting flow rate according to claim 1 or 5, characterized in that: The micro blood flow monitor (11) has a micro sensor (1102) for monitoring blood flow and a communication module (1103) capable of realizing information exchange with an external terminal.

7. A wearable device for promoting dialysis access maturation and detecting flow rate according to claim 1, characterized in that: A vibration device controlled by a controller (8) is also provided on the outer wall of the sleeve (1).

8. A wearable device for promoting dialysis access maturation and detecting flow rate according to claim 1, characterized in that: The inner side wall of the sleeve (1) is also provided with a heating device (14) which is controlled by a controller (8).

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