Blood seepage prevention and subcutaneous decompression device for internal arteriovenous fistula puncture

Abstract

The invention relates to the technical field of vascular access management auxiliary devices, and discloses an anti-bleeding and subcutaneous decompression device for internal arteriovenous fistula puncture, which comprises a shell, fixing assemblies comprising flexible rods and fixing hooks are arranged on the two sides of the shell so as to flexibly conform to arms and limit dialysis pipelines, an anti-bleeding decompression assembly is arranged in the shell, and the anti-bleeding decompression assembly is arranged in the shell. Comprising a rotating ring, a Y-shaped gasket, a rebound spring and a torsion spring, a pushing block and a protruding block with a bevel edge are fixed to the rotating ring, a limiting sliding groove with a self-locking bayonet is formed in the side wall of a shell, the pushing block is stirred to drive the rotating ring to rotate, the Y-shaped gasket is pressed downwards to stop bleeding through the wedge effect, and the two springs are synchronously compressed to store energy. Mechanical pressure maintaining can be achieved by pushing in the self-locking bayonet, the double springs release energy instantly during unlocking, the rotating ring is driven to return, and the Y-shaped gasket is driven to be lifted rapidly. Linear adjustment and stable locking of compression force are achieved, pressure is thoroughly reduced through one key during unlocking, internal fistula damage and secondary errhysis are effectively avoided, and clinical puncture safety is improved.

Description

Technical Field

[0001] This invention relates to the field of vascular access management auxiliary devices, specifically to a blood leakage prevention and subcutaneous decompression device for arteriovenous fistula puncture. Background Technology

[0002] Arteriovenous fistulas (AVFs) are the life-sustaining vascular access for hemodialysis patients. Effective compression and hemostasis at the puncture site, along with subcutaneous protection, are crucial for prolonging the lifespan of the fistula when the needle is removed after treatment. Currently, clinical practice relies mainly on manual pressure, elastic tourniquets, or adhesive tape to secure the compression pad after needle removal. However, these traditional methods have significant limitations in practical application and cannot meet the ever-increasing clinical demands for puncture protection.

[0003] First, existing tourniquets or adhesive tape fixation mostly rely on "rigid compression," where the applied pressure is difficult to quantify and lacks a stable maintenance mechanism. Prolonged excessive compression not only causes patient pain but also easily induces arteriovenous fistula thrombosis. Conversely, insufficient pressure can easily lead to subcutaneous bleeding or hematoma formation. Furthermore, existing tools lack mechanical energy release and instant decompression mechanisms. When medical staff relieve pressure, their movements are sluggish and dragging, easily disrupting newly formed blood clots and causing friction and traction on the local skin and blood vessels, thus triggering secondary tearing and bleeding at the puncture site.

[0004] Secondly, most existing compression devices only focus on a single compression point, lacking auxiliary fixation and restraint for external dialysis tubing, as well as a flexible buffer structure for the entire device. During dialysis or in the initial stage of needle removal compression, slight movements of the patient's arm or the weight of the suspended tubing can exert continuous mechanical tension on the puncture site, making the device prone to loosening or displacement under stress, significantly increasing the clinical risks of needle displacement and bleeding. Therefore, current technology struggles to simultaneously meet the multiple clinical requirements of precise pressure control and maintenance, rapid and thorough decompression, and prevention of tubing traction. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a blood-proof and subcutaneous decompression device for arteriovenous fistula puncture. It solves the problems of existing traditional compression hemostasis methods, such as the difficulty in accurately adjusting and stably locking the compression force, which leads to fistula damage; slow decompression which easily causes secondary bleeding; and the lack of effective fixation for dialysis tubing, which easily leads to displacement and leakage of the puncture needle due to traction.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: a blood-proof and subcutaneous decompression device for arteriovenous fistula puncture, comprising a shell, wherein a blood-proof and decompression component is provided inside the shell, and fixing components are provided on both sides of the outer wall of the shell; The anti-bleeding and decompression assembly includes a Y-shaped gasket disposed inside the outer shell. A support ring is fixedly connected to the lower side of the inner wall of the outer shell. A rotating ring is rotatably connected to the upper surface of the support ring. A pushing block is fixedly connected to the upper surface of the rotating ring. A protrusion is fixedly connected to the inner wall of the rotating ring. A bevel is provided on the outer wall of the protrusion. A sliding groove is formed on the upper surface of the support ring. A sliding column is fixedly connected inside the sliding groove. A rebound spring is sleeved on the outer wall of the sliding column. A moving block is slidably connected to the outer wall of the sliding column. A second rotating groove is formed on the inner wall of the support ring. A rotating column is rotatably connected to the inner wall of the second rotating groove. A torsion spring is sleeved on the outer wall of the rotating column. A first rotating groove is formed at the end of the bevel near the second rotating groove.

[0007] Preferably, the fixing component includes a flexible rod, one end of which is fixedly connected to both sides of the outer wall of the housing, and the other end of the flexible rod is fixedly connected to a connector. One end of the connector is fixedly connected to a fixing hook, and a support column is fixedly connected to the lower surface of the connector. One end of the support column is fixedly connected to a fixing sticker.

[0008] Preferably, the flexible rod and the lower edge of the fixed hook are fixedly connected to one end of the support column, and the fixed sticker is provided with a rectangle.

[0009] Preferably, the fixing hook is hook-shaped, and the fixing sticker is used to adhere to the arm.

[0010] Preferably, one end of the rebound spring is fixedly connected to the inside of the sliding groove, and the other end of the rebound spring is fixedly connected to the outer wall of the moving block.

[0011] Preferably, the torsion spring is disposed inside the first rotating groove, and the rotating column is disposed inside the first rotating groove.

[0012] Preferably, both ends of the torsion spring are fixedly connected inside the second rotating groove, and the torsion spring drives the Y-shaped washer to reset.

[0013] Preferably, the beveled outer wall is slidably connected to the upper surface of the Y-shaped gasket, and the bevel is used to compress the Y-shaped gasket.

[0014] Preferably, the rotating ring is disposed inside the outer casing, and the upper surface of the moving block is fixedly connected to the lower surface of the rotating ring.

[0015] Preferably, the outer wall of the rotating column is rotatably connected to the inner wall of the Y-shaped gasket. One end of the Y-shaped gasket is disposed inside the second rotating groove. The side wall of the outer shell is provided with a limiting groove for the pushing block to slide laterally. The end of the limiting groove extends downward or upward to form a self-locking slot. When the pushing block slides and engages with the self-locking slot, the rotation of the rotating ring is restricted, thereby achieving locking in the pressed state.

[0016] This invention provides a device for preventing leakage and providing subcutaneous decompression during arteriovenous fistula puncture. It offers the following advantages: 1. This invention transforms horizontal pushing into vertical downward pressure through the cooperation of the rotating ring, the inclined side of the protrusion, and the Y-shaped pad. Combined with the limiting groove and self-locking buckle on the side wall of the outer shell, it achieves linear adjustment and stable locking of the pressing intensity. Compared with the elastic hard compression of traditional tourniquets, this structure can accurately control and maintain the compression force according to the actual bleeding situation of the patient, avoiding long-term excessive compression that may lead to ischemia or thrombosis of arteriovenous fistula.

[0017] 2. The present invention is equipped with a dual energy storage and reset mechanism of a rebound spring and a torsion spring. When the push block moves out of the self-locking slot to release the lock, the rebound spring drives the rotating ring and the inclined side to retract quickly, and the torsion spring releases torque simultaneously to drive the Y-shaped pad to flip upward. This mechanical linkage structure can instantly remove the local pressure after hemostasis is completed, so that the puncture point can quickly get out of the pressure state, avoid secondary bleeding caused by slow manual loosening, and simplify the operation process of medical staff.

[0018] 3. The fixing components on both sides of the present invention adopt a combination of flexible rods and fixing stickers, which can adapt to the physiological curvature of different patients' arms and reduce rigid displacement. At the same time, the fixing hooks set at the ends of the connectors can not only support the secondary arm reinforcement of the external binding rope, but also lock and limit the dialysis tubing. This design effectively eliminates the mechanical traction caused by slight movement of the patient's arm or tubing suspension, and reduces the risk of needle displacement and puncture site tearing and bleeding. Attached Figure Description

[0019] Figure 1 This is a perspective view of the anti-bleeding and subcutaneous decompression device for arteriovenous fistula puncture of the present invention. Figure 2 This is a schematic diagram of the push block portion of the anti-bleeding and subcutaneous decompression device for arteriovenous fistula puncture of the present invention. Figure 3 This is a schematic diagram of the Y-shaped pad portion of the anti-bleeding and subcutaneous decompression device for arteriovenous fistula puncture of the present invention. Figure 4 This is a schematic diagram of the push block portion of the anti-bleeding and subcutaneous decompression device for arteriovenous fistula puncture of the present invention. Figure 5 This is a schematic diagram of the protrusion portion of the anti-bleeding and subcutaneous decompression device for arteriovenous fistula puncture of the present invention. Figure 6 This is a schematic diagram of the support ring portion of the anti-bleeding and subcutaneous decompression device for arteriovenous fistula puncture of the present invention. Figure 7 This is a schematic diagram of the rotating column portion of the anti-bleeding and subcutaneous decompression device for arteriovenous fistula puncture of the present invention. Figure 8 This is a schematic diagram of the torsion spring portion of the anti-bleeding and subcutaneous decompression device for arteriovenous fistula puncture of the present invention.

[0020] The components are as follows: 1. Flexible rod; 2. Connector; 3. Fixing hook; 4. Support column; 5. Fixing sticker; 6. Outer shell; 7. Rotating ring; 8. Push block; 9. Protrusion; 10. Bevel; 11. Y-shaped washer; 12. Support ring; 13. Sliding groove; 14. Rebound spring; 15. Moving block; 16. Sliding column; 17. Rotating groove one; 18. Rotating column; 19. Rotating groove two; 20. Torsion spring. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. 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.

[0022] Example: Please see the appendix Figure 1 -Appendix Figure 8 This invention provides a device for preventing blood leakage and subcutaneous decompression for arteriovenous fistula puncture, comprising: the main body of the device is composed of a shell 6, and both sides of the outer wall of the shell 6 are provided with fixing components for conforming to the patient's arm. In order for the device to adapt to conforming to the arm, the fixing components include flexible rods 1 fixedly connected to both sides of the shell 6, and a connector 2 fixedly connected to the other end of the flexible rod 1. A support column 4 is fixedly connected to the lower surface of the connector 2, and a rectangular fixing patch 5 is fixedly connected to one end of the support column 4. The fixing patch 5 is used to flatly adhere to the skin of the arm. The flexibility of the flexible rod 1 conforms to the physiological curvature of the patient's arm. In addition, the lower side of the flexible rod 1 and the fixing hook 3 are fixedly connected to one end of the support column 4, and a hook-shaped fixing hook 3 is fixedly connected to one end of the connector 2. The fixing hook 3 can be used with an external binding rope to further fix the device, and can also be used to lock and fix the dialysis tubing to prevent the tubing from pulling and causing the puncture point to shift. The outer casing 6 is equipped with a blood-proof decompression assembly. Its actuating end is a Y-shaped gasket 11 located inside the outer casing 6. A support ring 12 is fixedly connected to the lower inner wall of the outer casing 6. A rotating ring 7 is rotatably connected to the upper surface of the support ring 12. The rotating ring 7 is entirely located inside the outer casing 6, and a pushing block 8 is fixedly connected to its upper surface. A protrusion 9 is fixedly connected to the inner wall of the rotating ring 7, and a bevel 10 is provided on the outer wall of the protrusion 9. The outer wall of the bevel 10 is slidably connected to the upper surface of the Y-shaped gasket 11. Through the rotation of the rotating ring 7, the bevel 10 slides and compresses the Y-shaped gasket 11, utilizing the wedge effect to convert the horizontal rotational force into a vertically downward compressive force. To maintain the compressive state, a limiting groove is provided on the side wall of the outer casing 6 for the pushing block 8 to slide laterally. The end of the limiting groove extends downwards or upwards to form a self-locking slot. When the pushing block 8 slides and engages with the self-locking slot, it restricts the rotation of the rotating ring 7, achieving locking of the compressed state. To achieve the reset and decompression functions, a sliding groove 13 is provided on the upper surface of the support ring 12. A sliding column 16 is fixedly connected inside the sliding groove 13. A spring 14 is sleeved on the outer wall of the sliding column 16, and a moving block 15 is slidably connected to the outer wall of the sliding column 16. The upper surface of the moving block 15 is fixedly connected to the lower surface of the rotating ring 7. One end of the spring 14 is fixedly connected inside the sliding groove 13, and the other end is fixedly connected to the outer wall of the moving block 15. A second rotating groove 19 is provided on the inner wall of the support ring 12. A rotating column 18 is rotatably connected to the inner wall of the second rotating groove 19. The outer wall of the rotating column 18 is rotatably connected to the inner wall of the Y-shaped gasket 11, and one end of the Y-shaped gasket 11 is located inside the second rotating groove 19. A rotating groove 17 is provided at one end of the inclined side 10 near the rotating groove 19. The torsion spring 20 sleeved on the outer wall of the rotating column 18 and the rotating column 18 are both located inside the rotating groove 17. Both ends of the torsion spring 20 are fixedly connected inside the rotating groove 19 to drive the Y-shaped pad 11 to flip upward and reset.

[0023] Working principle: When the anti-bleeding and subcutaneous decompression device for arteriovenous fistula puncture is needed, the operator aligns the Y-shaped pad 11 inside the outer shell 6 with the puncture or needle removal site of the arteriovenous fistula, unfolds the fixing components on both sides of the outer shell 6, and utilizes the flexibility of the flexible rod 1 to naturally conform to the physiological curvature of the patient's arm, then smoothly attaches the rectangular fixing patch 5 at the bottom of the support column 4 to the skin of the arm to complete the initial fixation. At the same time, the fixing hook 3 on the outside can be used with external binding ropes to provide secondary reinforcement of the device around the arm, or to clamp the dialysis tubing to prevent the tubing from pulling and causing displacement of the puncture point; When pressure is needed for hemostasis, the operator moves the push block 8 in the direction of the limiting groove on the side wall of the outer shell 6. After the push block 8 is subjected to force, it directly drives the rotating ring 7 to rotate on the upper surface of the support ring 12. As the rotating ring 7 rotates, the protrusion 9 fixed on its inner wall moves synchronously, and the inclined edge 10 of its outer wall gradually slides in and tightly fits against the upper surface of the Y-shaped pad 11. The wedge effect of the inclined edge 10 converts the horizontal rotational force into a vertical downward squeezing force, forcing the Y-shaped pad 11 to flip downward and accurately compress the subcutaneous puncture point. During the downward compression, the moving block 15 at the bottom of the rotating ring 7 continuously compresses the rebound spring 14 to store horizontal energy. At the same time, the Y-shaped pad 11 flips downward, driving the rotating column 18 to rotate, causing the torsion spring 20 to deform and store torsional energy. When the pressure reaches the ideal hemostatic force, the operator will push the push block 8 into the self-locking slot extending from the end of the limiting slide groove. At this time, the physical limiting effect of the slot will counteract the rebound force of the two sets of springs, keeping the rotating ring 7 mechanically locked. The operator can then completely release the pressure, and the device will enter a stable and continuous automatic pressure hemostasis state. When the predetermined hemostasis time is reached or when decompression is required midway, the operator only needs to gently pull the push block 8 out of the self-locking slot to immediately release the mechanical lock on the rotating ring 7. The spring 14, which is in a compressed state, instantly releases its stored energy, pushing the moving block 15 and the rotating ring 7 back to their original positions. The inclined side 10 quickly retracts, releasing the downward pressure. At the same instant that the downward pressure is lost, the torsion spring 20, which is in a torsional deformation state, releases its torque, causing the Y-shaped pad 11 to quickly flip upward and lift. The internal components instantly return to their initial unstressed state, and the Y-shaped pad 11 disengages from the puncture point, achieving rapid and thorough subcutaneous decompression and effectively protecting the arteriovenous fistula.

[0024] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for preventing leakage and providing subcutaneous decompression for arteriovenous fistula puncture, comprising a housing (6), characterized in that, The outer shell (6) is provided with a blood-proof decompression component inside, and the outer walls of the outer shell (6) are provided with fixing components on both sides; The anti-bleeding and decompression assembly includes a Y-shaped gasket (11), which is disposed inside the outer shell (6). A support ring (12) is fixedly connected to the lower side of the inner wall of the outer shell (6). A rotating ring (7) is rotatably connected to the upper surface of the support ring (12). A pushing block (8) is fixedly connected to the upper surface of the rotating ring (7). A protrusion (9) is fixedly connected to the inner wall of the rotating ring (7). A bevel (10) is provided on the outer side wall of the protrusion (9). A sliding groove (13) is provided on the upper surface of the support ring (12). The sliding groove (13) is fixedly connected to a sliding column (16), and a spring spring (14) is sleeved on the outer wall of the sliding column (16). A moving block (15) is slidably connected to the outer wall of the sliding column (16). A second rotating groove (19) is opened on the inner wall of the support ring (12). A rotating column (18) is rotatably connected to the inner wall of the second rotating groove (19). A torsion spring (20) is sleeved on the outer wall of the rotating column (18). A first rotating groove (17) is opened at one end of the inclined side (10) near the second rotating groove (19).

2. The anti-bleeding and subcutaneous decompression device for arteriovenous fistula puncture according to claim 1, characterized in that, The fixing component includes a flexible rod (1), one end of which is fixedly connected to both sides of the outer wall of the outer shell (6), and the other end of the flexible rod (1) is fixedly connected to a connector (2). One end of the connector (2) is fixedly connected to a fixing hook (3), and the lower surface of the connector (2) is fixedly connected to a support column (4). One end of the support column (4) is fixedly connected to a fixing sticker (5).

3. The anti-bleeding and subcutaneous decompression device for arteriovenous fistula puncture according to claim 2, characterized in that, The flexible rod (1) and the fixed hook (3) are fixedly connected to one end of the support column (4) at the bottom, and the fixed sticker (5) is provided with a rectangle.

4. The anti-bleeding and subcutaneous decompression device for arteriovenous fistula puncture according to claim 2, characterized in that, The fixing hook (3) is hook-shaped, and the fixing sticker (5) is used to stick to the arm.

5. The anti-bleeding and subcutaneous decompression device for arteriovenous fistula puncture according to claim 1, characterized in that, One end of the spring (14) is fixedly connected to the inside of the sliding groove (13), and the other end of the spring (14) is fixedly connected to the outer wall of the moving block (15).

6. The anti-bleeding and subcutaneous decompression device for arteriovenous fistula puncture according to claim 1, characterized in that, The torsion spring (20) is disposed inside the first rotating groove (17), and the rotating column (18) is disposed inside the first rotating groove (17).

7. The anti-bleeding and subcutaneous decompression device for arteriovenous fistula puncture according to claim 1, characterized in that, Both ends of the torsion spring (20) are fixedly connected inside the rotating groove (19), and the torsion spring (20) drives the Y-shaped washer (11) to reset.

8. The anti-bleeding and subcutaneous decompression device for arteriovenous fistula puncture according to claim 1, characterized in that, The outer wall of the inclined edge (10) is slidably connected to the upper surface of the Y-shaped gasket (11), and the inclined edge (10) is used to compress the Y-shaped gasket (11).

9. The anti-bleeding and subcutaneous decompression device for arteriovenous fistula puncture according to claim 1, characterized in that, The rotating ring (7) is located inside the outer shell (6), and the upper surface of the moving block (15) is fixedly connected to the lower surface of the rotating ring (7).

10. The anti-bleeding and subcutaneous decompression device for arteriovenous fistula puncture according to claim 1, characterized in that, The outer wall of the rotating column (18) is rotatably connected to the inner wall of the Y-shaped gasket (11). One end of the Y-shaped gasket (11) is located inside the rotating groove (19). The side wall of the outer shell (6) is provided with a limiting groove for the pushing block (8) to slide laterally. The end of the limiting groove extends downward or upward to form a self-locking slot. When the pushing block (8) slides and is locked into the self-locking slot, the rotating ring (7) is restricted from rotating, thereby achieving locking in the pressing state.

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