A fistula protection device for nephrology nursing

Abstract

This invention relates to the field of medical device technology, specifically to a fistula protection device for nephrology nursing, comprising a puncture needle, a base, and several arm sleeves. Each arm sleeve is fixedly connected to the top of the base and is equipped with a massage component for massaging the arm. The base contains a drive component for operating the massage component. One arm sleeve has a monitoring component for monitoring the displacement distance of the puncture needle and a protective component for preventing needle dislodgement. When the monitoring component detects needle dislodgement, the drive component activates the protective component to prevent further dislodgement. This invention can monitor the status of the puncture needle in real time and further secure it when it is about to dislodge, preventing further dislodgement, avoiding the risk of blood leakage, and ensuring dialysis safety.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to an arteriovenous fistula protection device for nephrology nursing. Background Technology

[0002] In hemodialysis treatment within the nephrology department, arteriovenous fistulas (AVFs) are the patient's "lifeline," and their functional integrity directly determines the dialysis outcome and the patient's quality of life. Clinically, after AVF puncture, the puncture needle is prone to displacement or dislodgement due to patient limb movement, tubing traction, or improper fixation. The blood flow in AVFs is typically high (200-300 ml / min), and needle dislodgement leads to rapid blood outflow. If hemostasis is not achieved promptly, blood loss can exceed 500 ml within a short period, causing hemorrhagic shock symptoms such as pallor, decreased blood pressure, and confusion. In severe cases, it can lead to organ failure or death.

[0003] According to the conclusions of the journal "Detailed Care in Blood Purification Nursing" (by Ma Zhaodi) published by Zhumadian Municipal Hospital of Traditional Chinese Medicine, "After arteriovenous fistula puncture, proper fixation of the needle wings is crucial. Although the clinical method of using medical tape for fixation can initially fix the needle, it is easy for the needle to shift due to the tape being wrapped too tightly and compressing the blood vessel or not being fixed securely. In addition, there is a lack of real-time monitoring and emergency protection mechanisms. At the same time, manual inspection is difficult to take care of all patients, resulting in a delayed risk response, which can easily lead to puncture complications and affect the protection of fistula function."

[0004] In clinical dialysis nursing scenarios, existing arteriovenous fistula (AVF) protection methods have significant limitations: the fixation method is singular, relying solely on adhesive tape, which is insufficient to withstand external forces from limb movement and tubing traction, resulting in a high risk of needle displacement and dislodgement. Therefore, the fundamental flaw of existing AVF protection methods lies in the insufficient stability of the needle fixation, which easily affects the safety and lifespan of the AVF. Thus, it is necessary to propose a multifunctional AVF vascular protection device for nephrology nursing to address these issues. Summary of the Invention

[0005] To address the aforementioned issues, this invention provides a fistula protection device for nephrology nursing, used to prevent dislodgement after fistula puncture. The device can monitor the status of the puncture needle in real time and further secure it when it is about to dislodge, preventing further dislodgement, avoiding the risk of blood leakage, and ensuring dialysis safety.

[0006] To achieve the above objectives, the technical solution of the present invention is as follows: A fistula protection device for nephrology nursing includes a puncture needle, a base, and several arm sleeves. Each arm sleeve is fixedly connected to the top of the base, and each arm sleeve is provided with a massage component for massaging the arm. The base contains a drive component for driving the massage component. One of the arm sleeves is provided with a monitoring component for monitoring the displacement distance of the puncture needle, and a protective component for preventing the puncture needle from dislodging. When the monitoring component detects needle dislodging, the drive component drives the protective component to prevent the puncture needle from dislodging.

[0007] The technical principles of the above solution are as follows: After the drive component is activated, it outputs power to drive the massage component in alternating expansion and contraction movements, providing a gentle, reciprocating massage to the patient's arm within the arm sleeve. The monitoring component continuously monitors the position and status of the puncture needle in real time, capturing changes in needle displacement. When the puncture needle displacement reaches a preset dislodgement warning threshold, it immediately sends a signal to the drive component. Upon receiving the signal, the drive component quickly switches its operating state, switching from driving the massage component to providing power to the protective component. This drives the protective component to initiate an emergency fixation action, thereby preventing the puncture needle from dislodging.

[0008] The above approach has the following beneficial effects: 1. This solution achieves real-time monitoring and rapid emergency protection against the risk of needle dislodgement through the coordinated design of monitoring, protection, and drive components. It breaks away from the traditional single mode of relying solely on tape fixation, effectively blocking the risk of blood leakage caused by needle displacement or dislodgement, improving the safety of arteriovenous fistula dialysis treatment, reducing the incidence of serious complications such as hemorrhagic shock, and extending the lifespan of the arteriovenous fistula.

[0009] 2. This solution integrates massage and drive components. While providing anti-detachment protection, the alternating expansion and contraction of the massage components can gently massage the patient's arm, promote local blood circulation, relieve soreness and numbness caused by prolonged immobilization of the arm, reduce the risk of thrombosis, balance treatment safety and patient comfort, and enhance the overall dialysis experience.

[0010] 3. The structure of this solution is adapted to clinical dialysis nursing scenarios, without requiring significant adjustments to the existing dialysis process. It is highly versatile, easy to promote and apply in clinical practice, and reduces the inspection pressure and nursing burden on medical staff.

[0011] Furthermore, the massage component includes a plurality of first airbags and second airbags fixedly connected to the inner wall of the arm sleeve.

[0012] Beneficial effects: The combination design of the first and second airbags can form a uniform and gentle massage force through alternating expansion and contraction, avoiding the problem of uneven force caused by single airbag massage.

[0013] Furthermore, the drive assembly includes a piston cylinder, a drive component, and a controller fixedly connected to the inner bottom wall of the base; the controller is used to control the rotation of the output shaft of the drive component; a rotating shaft is coaxially fixedly connected to the output shaft of the drive component, a first gear is coaxially fixedly connected to the rotating shaft, a wheel is coaxially fixedly connected to the end of the rotating shaft away from the drive component, a crank is eccentrically hinged to the side wall of the wheel, a piston connecting rod is hinged to the end of the crank away from the wheel, the end of the piston connecting rod away from the crank extends through the top wall of the piston cylinder into the piston cylinder and is fixedly connected to a piston block, the piston block divides the piston cylinder into an upper chamber and a lower chamber; the first airbags are all connected to the upper chamber, and the second airbags are all connected to the lower chamber.

[0014] Beneficial effects: The alternating drive of the airbags is achieved through a mechanical transmission structure, which is more stable and quieter than structures such as electric air pumps, making it suitable for the quiet treatment environment of dialysis rooms.

[0015] Furthermore, the protective component includes a groove opened in one of the arm sleeve sidewalls, a U-shaped rack slidingly fitted in the groove, and an elastic silicone block fixedly connected to the sidewall of the U-shaped rack.

[0016] A first support rod and a second support rod are fixedly connected to the inner bottom wall of the base. A first drive shaft is rotatably fitted on the first support rod. A second gear is coaxially fixedly connected to one end of the first drive shaft, and a bushing is rotatably fitted to the other end of the first drive shaft. The second gear meshes with the first gear.

[0017] An electromagnet is embedded in the inner circumference of the bushing, and an iron core is embedded in the inner circumference of the first drive shaft. The controller is used to control the electromagnet to be energized and attract the iron core. A second drive shaft is rotatably fitted on the second support rod. A third gear is coaxially fixedly connected to one end of the second drive shaft, and the other end of the second drive shaft is coaxially fixedly connected to the bushing. The third gear meshes with a U-shaped rack.

[0018] Beneficial effects: The switching of power transmission is achieved through the attraction and linkage between the electromagnet and the iron core. The response speed is fast, and the protective action can be activated instantly after the risk of needle detachment is detected.

[0019] Furthermore, the monitoring component includes a flexible pressure sensor patch, which is fixedly connected to the arm. The controller is used to receive the pressure value sent by the flexible pressure sensor patch through puncture, and to control the electromagnet to be energized and attract the iron core based on the pressure value.

[0020] Beneficial effects: The flexible pressure sensor patch is thin, soft, and has a strong fit, allowing it to be tightly fixed to the skin of the arm without affecting the puncture operation or the patient's arm movement comfort, and is suitable for long-term wear during dialysis; it determines the position status by directly collecting the pressure value applied by the puncture needle, and the monitoring logic is intuitive and highly accurate, which can quickly capture pressure changes caused by puncture needle displacement and avoid false triggering or missed triggering.

[0021] Furthermore, the top of the base is symmetrically equipped with limiting components to restrict arm movement.

[0022] The limiting components include a sliding frame fixedly connected to the inner bottom wall of the base, and a first connecting rod symmetrically hinged to the top of the base; a through groove is opened in the top wall of the base; a rack is slidably fitted on the sliding frame, and the top end of the rack passes through the through groove and is fixedly connected to an arc-shaped support plate.

[0023] The first connecting rod is hinged to a second connecting rod at the end furthest from the base. The second connecting rod is hinged to a third connecting rod. The third connecting rod is connected to a sector gear at the end furthest from the second connecting rod, and the sector gears are rotatably engaged with the inner wall of the slot. The sector gears mesh with the rack rod. The second connecting rod is fixedly connected to an arc-shaped clamping plate at the end furthest from the first connecting rod.

[0024] Beneficial effects: The gravity-linked clamping structure allows the patient's arm to be placed on the curved support plate, triggering the clamping action through its own weight. No manual adjustment is required, making it convenient to operate and suitable for dialysis patients with limited limb mobility.

[0025] Furthermore, the base is also equipped with a positioning component for locating the puncture position; the positioning component includes symmetrical sliding grooves on the top of the base, each sliding groove having a sliding rod slidably fitted inside, one of the sliding rods having an elastic band fixedly connected to its top, the other sliding rod having a buckle fixedly connected to its top, and the end of the elastic band away from the sliding rod having a hook fixedly connected to it.

[0026] Beneficial effects: The slide bar can slide along the sliding groove, which makes it easy to accurately adjust the fixed position of the elastic band according to the puncture position. The elastic band can flexibly fix the dialysis tubing through the cooperation of hooks and buckles, effectively avoiding the displacement of the puncture needle caused by the tubing being pulled, and supplementing and strengthening the anti-drop protection effect.

[0027] Furthermore, distance markings are engraved on the top of the base.

[0028] Beneficial effects: The distance scale lines can provide a reference for medical staff to locate the puncture site, making it easier to quickly find the original puncture point when repeating punctures and reducing vascular damage.

[0029] Furthermore, pipe clamps are fixedly connected to the side walls of the slide rod.

[0030] Beneficial effects: Tube clamps can organize and fix dialysis tubing in an orderly manner, preventing tubing from becoming tangled or twisted and affecting blood flow.

[0031] Furthermore, a sponge layer is fixedly connected to the inner wall of the arm sleeve.

[0032] Beneficial effects: The soft and breathable sponge layer increases the comfort of the arm sleeve against the skin, reducing stuffiness and pressure marks caused by prolonged wear. Attached Figure Description

[0033] Figure 1 This is an isometric view of the arteriovenous fistula protection device for nephrology nursing based on the present invention.

[0034] Figure 2 for Figure 1 Enlarged view of section A.

[0035] Figure 3 This is a top view of the arteriovenous fistula protection device for nephrology nursing based on the present invention.

[0036] Figure 4 for Figure 3 Sectional view along the AA direction.

[0037] Figure 5 for Figure 4 Enlarged view of section B.

[0038] Figure 6 for Figure 3 Sectional view along the BB direction.

[0039] Figure 7 This is a top sectional view of the base of the arteriovenous fistula protection device for nephrology nursing of the present invention.

[0040] Figure 8 This is a front sectional view of the sleeve in the arteriovenous fistula protection device for nephrology nursing of the present invention.

[0041] The reference numerals in the accompanying drawings of the instruction manual include: 1. Arm sleeve; 2. Base; 3. First airbag; 4. Second airbag; 5. Piston cylinder; 6. DC motor; 7. Rotating shaft; 8. First gear; 9. Wheel; 10. Crank; 11. Piston connecting rod; 12. Piston block; 13. U-shaped rack; 14. First drive shaft; 15. Second gear; 16. Bushing; 17. Electromagnet; 18. Iron core; 19. Second drive shaft; 20. Third gear; 21. Sliding frame; 22. First connecting rod; 23. Rack rod; 24. Arc-shaped support plate; 25. Second connecting rod; 26. Third connecting rod; 27. Sector gear; 28. Arc-shaped clamping plate; 29. ​​Slide rod; 30. Elastic band; 31. Buckle; 32. Hook; 33. Pipe clamp. Detailed Implementation

[0042] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0044] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0045] The following detailed description illustrates the specific implementation method: Implementation, for example, attached Figure 1 and Figure 3 As shown: A fistula protection device for nephrology nursing includes a puncture needle, a base 2, and several arm sleeves 1. Each arm sleeve 1 is fixedly connected to the top of the base 2 by screws. A sponge layer is fixedly adhered to the inner wall of each arm sleeve 1. Each arm sleeve 1 is equipped with a massage component for massaging the arm. Symmetrical limiting components for restricting arm movement are provided on the top of the base 2.

[0046] The base 2 is equipped with a drive component for driving the massage component; one of the arm sleeves 1 is equipped with a monitoring component for monitoring the displacement distance of the puncture needle, and a protective component for preventing the puncture needle from dislodging; when the monitoring component detects needle dislodging, the drive component drives the protective component to prevent the puncture needle from dislodging.

[0047] like Figure 1 and Figure 7 As shown, specifically, the massage component includes several first airbags 3 and second airbags 4 fixedly adhered to the inner wall of the arm sleeve 1. The drive component includes a piston cylinder 5, a drive element, and a controller, which are fixedly connected to the inner bottom wall of the base 2 by screws. The controller is used to control the rotation of the output shaft of the drive element. In this embodiment, the drive element is a DC motor 6. A rotating shaft 7 is fixedly connected to the output shaft of the DC motor 6 by a coupling. A first gear 8 is coaxially keyed to the rotating shaft 7. A wheel 9 is coaxially fixedly connected to the end of the rotating shaft 7 away from the DC motor 6 by screws.

[0048] like Figure 4 and Figure 5 As shown, a crank 10 is eccentrically hinged to the side wall of the wheel 9. A piston connecting rod 11 is hinged to the end of the crank 10 away from the wheel 9. The end of the piston connecting rod 11 away from the crank 10 extends through the top wall of the piston cylinder 5 into the piston cylinder 5 and is fixedly connected to a piston block 12 by screws. The piston block 12 divides the piston cylinder 5 into an upper chamber and a lower chamber. The first airbags 3 are all connected to the upper chamber, and the second airbags 4 are all connected to the lower chamber.

[0049] Combination Figure 1 As shown, during the arteriovenous fistula dialysis procedure, the patient lies flat with their arm naturally placed in the arm sleeve 1 on top of the base 2. The arm position is adjusted so that the fistula puncture site is aligned with the corresponding area of ​​the arm sleeve 1, which is equipped with monitoring and protective components. The arm is secured by the symmetrical restraint components on top of the base 2 to prevent displacement of the puncture needle due to arm movement. The puncture site is then routinely disinfected, completing the fistula puncture procedure.

[0050] Combination Figure 5 and Figure 7 As shown, during dialysis, the controller controls the DC motor 6 to drive the rotating shaft 7 to rotate. The rotating shaft 7 synchronously drives the wheel 9 to rotate. The wheel 9 pulls the piston connecting rod 11 up and down through the eccentrically hinged crank 10, which in turn drives the piston block 12 to alternately rise and fall inside the piston cylinder 5.

[0051] When piston block 12 descends, the upper chamber of piston cylinder 5 increases in volume, creating negative pressure, while the lower chamber decreases in volume, creating positive pressure. Airflow from the lower chamber is injected into the second airbag 4, causing it to inflate and gently massage the inner side of the arm sleeve 1. When piston block 12 rises, positive pressure is generated in the upper chamber and negative pressure in the lower chamber. Airflow from the upper chamber is injected into the first airbag 3, causing it to inflate and massage. The second airbag 4 deflates and contracts. This cycle alternates between the inflation and massage of the first airbag 3 and the second airbag 4, promoting blood circulation in the arm, increasing blood flow, and reducing the accumulation of blood clots.

[0052] When the monitoring component detects that the displacement of the puncture needle exceeds the set threshold, the controller adjusts the operating state of the drive component and switches the power transmission, switching the power of the drive component to the protection component. At this time, the protection component presses and fixes the puncture needle from the outside, preventing the puncture needle from falling out further and providing a safety guarantee for arteriovenous fistula dialysis.

[0053] like Figure 4 As shown, specifically, the protective component includes a groove opened in the side wall of one of the arm sleeves 1, a U-shaped rack 13 that slides within the groove, and an elastic silicone block that is fixedly bonded to the side wall of the U-shaped rack 13.

[0054] like Figure 7As shown, a first support rod and a second support rod are fixedly connected to the inner bottom wall of the base 2 by screws. A first transmission shaft 14 is rotatably fitted on the first support rod. A second gear 15 is coaxially fixed to one end of the first transmission shaft 14 by screws. A bushing 16 is rotatably fitted to the other end of the first transmission shaft 14. The second gear 15 and the first gear 8 mesh.

[0055] like Figure 8 As shown, an electromagnet 17 is embedded in the inner circumference of the bushing 16, and an iron core 18 is embedded in the inner circumference of the first drive shaft 14. The controller is used to control the electromagnet 17 to be energized and attract the iron core 18.

[0056] The second support rod is rotatably fitted with a second drive shaft 19. One end of the second drive shaft 19 is coaxially fixedly connected to a third gear 20 by screws. The other end of the second drive shaft 19 is coaxially fixedly connected to a bushing 16 by screws. The third gear 20 meshes with a U-shaped rack 13.

[0057] Combination Figure 7 and Figure 8 As shown, when the monitoring component detects that the displacement of the puncture needle exceeds the set threshold, the controller controls the electromagnet 17 to be energized for 2 seconds and then de-energized.

[0058] When the electromagnet 17 is energized, it generates a magnetic force to attract the iron core 18 inside the first drive shaft 14. At this time, the DC motor 6 drives the rotating shaft 7 to rotate. Through the meshing of the first gear 8 and the second gear 15, the first drive shaft 14 is driven to rotate. Then, through the attracted bushing 16, the second drive shaft 19 is driven to rotate synchronously. The third gear 20 at the end of the second drive shaft 19 rotates accordingly. Since the third gear 20 meshes with the U-shaped rack 13, the U-shaped rack 13 rotates clockwise to the locking arm. The U-shaped rack 13 drives the elastic silicone block to move synchronously, pressing and fixing the puncture needle location. At the same time, the soft properties of the elastic silicone block can avoid damage to the skin and puncture point. When the electromagnet 17 is de-energized, it can no longer attract the iron core 18, so the second drive shaft 19 stops rotating. At this time, the U-shaped rack 13 stops rotating, thus avoiding damage to the equipment caused by the continuous rotation of the U-shaped rack 13. It also prevents the risk of the puncture needle coming out. When the U-shaped rack 13 needs to be reset, since the electromagnet 17 is de-energized, the U-shaped rack 13 can be rotated counterclockwise to restore it.

[0059] like Figure 8 As shown, specifically, the monitoring component includes a flexible pressure sensor patch (not shown in the figure). The flexible pressure sensor patch is fixedly adhered to the arm. In this embodiment, the flexible pressure sensor patch is a thin-film piezoelectric pressure sensor, which is electrically connected to the controller through electrode wires. The controller is used to receive the pressure value sent by the flexible pressure sensor patch through the puncture, and control the electromagnet 17 to be energized and attract the iron core 18 based on the pressure value.

[0060] A pressure threshold is set for the controller. After the puncture procedure, the flexible pressure sensor patch is adhered to the skin of the arm corresponding to the needle wing of the puncture needle, allowing the needle wing to naturally conform to the surface of the flexible pressure sensor patch, forming pressure contact. During dialysis, the flexible pressure sensor patch collects the pressure signal applied by the needle wing in real time. Under normal conditions, the puncture needle position is stable, and the pressure value of the needle wing on the flexible pressure sensor patch remains within the normal range, and the controller determines that there is no risk of puncture needle displacement. When the puncture needle is displaced due to limb movement, tubing traction, etc., and the displacement approaches or reaches the 1cm pre-dislodgement threshold, the adhesion between the needle wing and the flexible pressure sensor patch decreases, or even partially detaches from the flexible pressure sensor patch, causing the pressure value collected by the flexible pressure sensor patch to drop sharply below the pressure threshold. The controller then energizes electromagnet 17 for 2 seconds, thereby initiating the emergency fixing action of the protective component to achieve a rapid response to the risk of needle dislodgement. In this embodiment, the flexible pressure sensor patch is made of medical-grade adhesive material, which is firmly fixed and non-irritating to the skin, and is suitable for long-term adhesion throughout dialysis. The surface of the patch is covered with a medical waterproof film, which can effectively isolate sweat and residual disinfectant liquids to avoid affecting the sensing accuracy. At the same time, it is easy to remove after surgery, reducing damage to the patient's skin, and balancing monitoring reliability and safety of use.

[0061] like Figure 6 As shown, specifically, the limiting components include a sliding frame 21 fixedly connected to the inner bottom wall of the base 2 by screws, and a first connecting rod 22 symmetrically hinged to the top of the base 2; a through groove is opened in the top wall of the base 2; a rack 23 is slidably fitted on the sliding frame 21, and the top end of the rack 23 passes through the through groove and is fixedly connected to an arc-shaped support plate 24 by screws.

[0062] The first connecting rod 22 is hinged to a second connecting rod 25 at the end away from the base 2. A third connecting rod 26 is hinged to each of the second connecting rods 25. The end of each third connecting rod 26 away from the second connecting rod 25 passes through a through groove and is integrally formed with a sector gear 27. The sector gears 27 are rotatably engaged with the inner wall of the through groove and mesh with the rack rod 23. The end of each second connecting rod 25 away from the first connecting rod 22 is fixedly connected to an arc-shaped clamping plate 28 by screws. The base 2 is also equipped with a positioning component for locating the puncture position.

[0063] Combination Figure 6As shown, when the arm is placed on the arm sleeve 1, the weight of the arm can press the arc-shaped support plate 24, thereby driving the rack rod 23 to move downward on the sliding frame 21. Since the sector gears 27 are all engaged with the rack rod 23, when the rack rod 23 moves downward, the sector gear 27 on the left rotates clockwise, driving the third link 26 on the left to drive the second link 25 to push the arc-shaped clamping plate 28 on the left to the right. The sector gear 27 on the right rotates counterclockwise, driving the third link 26 on the right to drive the second link 25 to push the arc-shaped clamping plate 28 on the right to the left. This allows the arc-shaped clamping plate 28 to clamp the arm, avoiding the risk of puncture failure caused by the arm accidentally sliding. It also reduces the risk of needle dislodgement caused by the arm pulling on the tubing, further improving safety.

[0064] like Figure 1 and Figure 2 As shown, specifically, the positioning component includes symmetrical sliding grooves on the top of the base 2, with sliding rods 29 slidably fitted within each groove. Each sliding rod 29 has a pipe clamp 33 fixedly connected to its side wall by screws. One sliding rod 29 has an elastic band 30 fixedly connected to its top by screws, and the other sliding rod 29 has a buckle 31 fixedly connected to its top by screws. A hook 32 is fixedly connected to the end of the elastic band 30 away from the sliding rod 29 by screws. Distance scale lines are engraved on the top of the base 2.

[0065] Combination Figure 1 and Figure 2 As shown, before the puncture, medical staff can slide the two sliding rods 29 along the top sliding groove of the base 2 according to the rope ladder puncture specifications (puncture point spacing 0.5-1cm), wrap the elastic band 30 around the patient's arm, and fasten the hook 32 to the buckle 31. At this time, the elastic band 30 can gently press the arm due to its own elasticity. Using the elastic band 30 as a ruler, a medical marker can be used to draw puncture points with consistent spacing on the arm. By repeatedly adjusting by sliding the sliding rod 29, multiple equidistant puncture points can be drawn on the arm, thereby matching the fixed spacing requirements of the rope ladder puncture method and avoiding vascular damage caused by puncture point positioning deviation. At the same time, before the puncture, the dialysis tubing can be inserted into the tube clamp 33 on the side wall of the sliding rod 29. The tube clamp 33 and the elastic band 30 work together to fix the tubing, preventing the tubing from shaking and pulling the puncture needle, and providing a stable environment for the puncture operation. After the puncture is completed, unhook 32 and remove elastic band 30. Slide slide 29 to a position that does not affect the operation of massage and protective components. Tube clamp 33 can continue to assist in fixing the tube, further reducing the risk of tube traction.

[0066] This solution, through the coordinated design of monitoring, protection, and drive components, enables real-time monitoring and rapid emergency protection against needle dislodgement risk. It breaks away from the traditional single-mode reliance on tape fixation, effectively preventing the risk of blood leakage caused by needle displacement or dislodgement. This improves the safety of arteriovenous fistula dialysis treatment, reduces the incidence of serious complications such as hemorrhagic shock, and extends the lifespan of the fistula. While providing anti-dislodgement protection, the alternating expansion and contraction of the massage component gently massages the patient's arm, promoting local blood circulation, relieving soreness and numbness caused by prolonged arm immobilization, and reducing the risk of thrombosis. It balances treatment safety and patient comfort, enhancing the overall dialysis experience.

[0067] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A fistula protection device for nephrology nursing, comprising a puncture needle, a base (2), and several arm sleeves (1), wherein each arm sleeve (1) is fixedly connected to the top of the base (2), characterized in that, All arm sleeves (1) are equipped with massage components for massaging the arms; The base (2) is equipped with a drive component for driving the massage component; one of the arm sleeves (1) is equipped with a monitoring component for monitoring the displacement distance of the puncture needle, and a protective component for preventing the puncture needle from dislodging; when the monitoring component detects needle dislodging, the drive component drives the protective component to prevent the puncture needle from dislodging.

2. The arteriovenous fistula protection device for nephrology nursing according to claim 1, characterized in that, The massage component includes several first airbags (3) and second airbags (4) fixedly connected to the inner wall of the arm sleeve (1).

3. The arteriovenous fistula protection device for nephrology nursing according to claim 2, characterized in that, The drive assembly includes a piston cylinder (5) fixedly connected to the bottom wall of the base (2), a drive component and a controller; the controller is used to control the rotation of the output shaft of the drive component; a rotating shaft (7) is fixedly connected to the output shaft of the drive component, a first gear (8) is fixedly connected to the rotating shaft (7) coaxially, a wheel (9) is fixedly connected to the end of the rotating shaft (7) away from the drive component, a crank (10) is eccentrically hinged to the side wall of the wheel (9), a piston connecting rod (11) is hinged to the end of the crank (10) away from the wheel (9), the end of the piston connecting rod (11) away from the crank (10) extends through the top wall of the piston cylinder (5) into the piston cylinder (5) and is fixedly connected to a piston block (12), the piston block (12) divides the piston cylinder (5) into an upper chamber and a lower chamber; the first airbags (3) are all connected to the upper chamber, and the second airbags (4) are all connected to the lower chamber.

4. The arteriovenous fistula protection device for nephrology nursing according to claim 3, characterized in that, The protective component includes a groove opened in the side wall of one of the arm sleeves (1), a U-shaped rack (13) is slidably fitted in the groove, and an elastic silicone block is fixedly connected to the side wall of the U-shaped rack (13); The base (2) has a first support rod and a second support rod fixedly connected to the inner bottom wall. The first support rod is rotatably fitted with a first transmission shaft (14). One end of the first transmission shaft (14) is coaxially fixedly connected with a second gear (15). The other end of the first transmission shaft (14) is rotatably fitted with a bushing (16). The second gear (15) and the first gear (8) mesh. An electromagnet (17) is embedded in the inner circumference of the bushing (16), and an iron core (18) is embedded in the inner circumference of the first drive shaft (14). The controller is used to control the electromagnet (17) to be energized and attract the iron core (18). The second support rod is rotatably fitted with a second transmission shaft (19). One end of the second transmission shaft (19) is coaxially fixedly connected to a third gear (20). The other end of the second transmission shaft (19) is coaxially fixedly connected to a bushing (16). The third gear (20) meshes with a U-shaped rack (13).

5. The arteriovenous fistula protection device for nephrology nursing according to claim 4, characterized in that, The monitoring component includes a flexible pressure sensor patch, which is fixedly connected to the arm. The controller is used to receive the pressure value sent by the flexible pressure sensor patch through puncture, and to control the electromagnet (17) to be energized and attract the iron core (18) based on the pressure value.

6. The arteriovenous fistula protection device for nephrology nursing according to claim 5, characterized in that, The base (2) has symmetrical limiting components on its top to limit arm movement; The limiting components include a sliding frame (21) fixedly connected to the inner bottom wall of the base (2), and a first connecting rod (22) symmetrically hinged to the top of the base (2); a through groove is opened on the top wall of the base (2); a rack rod (23) is slidably fitted on the sliding frame (21), and the top end of the rack rod (23) passes through the through groove and is fixedly connected to an arc-shaped support plate (24). The first link (22) is hinged to the second link (25) at the end away from the base (2). The second link (25) is hinged to the third link (26). The third link (26) at the end away from the second link (25) passes through the through slot and is fixedly connected to the sector gear (27). The sector gear (27) is rotatably engaged with the inner side wall of the through slot and meshes with the rack (23). The second link (25) at the end away from the first link (22) is fixedly connected to the arc-shaped clamping plate (28).

7. The arteriovenous fistula protection device for nephrology nursing according to claim 6, characterized in that, The base (2) is also equipped with a positioning component for locating the puncture position; The positioning component includes symmetrical sliding grooves on the top of the base (2), and sliding rods (29) are slidably fitted in the sliding grooves. One of the sliding rods (29) is fixedly connected to the top of an elastic band (30), and the other sliding rod (29) is fixedly connected to a buckle (31). A hook (32) is fixedly connected to the end of the elastic band (30) away from the sliding rod (29).

8. The arteriovenous fistula protection device for nephrology nursing according to claim 7, characterized in that, The base (2) has distance scale lines engraved on the top.

9. The arteriovenous fistula protection device for nephrology nursing according to claim 8, characterized in that, Pipe clamps (33) are fixedly connected to the side wall of the slide rod (29).

10. The arteriovenous fistula protection device for nephrology nursing according to claim 9, characterized in that, The inner wall of the arm sleeve (1) is fixedly connected with a sponge layer.

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