A quick connection type anti-falling connection structure of a kidney dialysis indwelling tube

Abstract

This invention relates to the field of renal dialysis medical equipment technology, and in particular to a quick-connect anti-dislodgement connection structure for renal dialysis indwelling catheters. The structure includes a mounting base, a connecting component connected to the top of the mounting base, a protective component connected to the left end of the connecting component, a clamping component connected to the top of the protective component, and a limiting component connected to the clamping component. By setting a limiting component composed of an arc-shaped limiting box, an arc-shaped rod, a spherical stop block, and multiple sets of elastic and sliding components, a multi-layered mechanical locking anti-dislodgement structure is formed after clamping. This effectively resists the pulling force generated by the patient turning over or moving their limbs, fundamentally solving the problem of easy loosening and dislodgement caused by traditional connection methods relying solely on threaded engagement. It eliminates serious safety hazards such as blood gushing out and dialysis interruption due to accidental catheter dislodgement, significantly improving the safety and reliability of the renal dialysis treatment process and providing a stable and reliable access for dialysis treatment of end-stage renal disease patients.

Description

Technical Field

[0001] This invention relates to the field of kidney dialysis medical equipment technology, and in particular to a quick-connect anti-dislodgement connection structure for kidney dialysis indwelling catheters. Background Technology

[0002] Kidney dialysis is the core treatment for end-stage renal disease patients to maintain their lives. The indwelling dialysis catheter, as a crucial pathway for blood to enter and exit the body, directly affects the patient's treatment safety and dialysis effectiveness through its connection to the dialysis tubing; it is the "lifeline" ensuring the smooth progress of dialysis treatment. In clinical practice, the connection between the indwelling dialysis catheter and the dialysis tubing needs to be frequently disassembled (e.g., sealing the catheter after dialysis and reconnecting it for the next dialysis session). Furthermore, patients may turn over or move their limbs during dialysis, easily generating traction forces on the connection. Therefore, the anti-dislodgement performance and ease of operation of the connection structure are core requirements in clinical application.

[0003] Currently, most existing renal dialysis catheter connection structures use the traditional spiral connection method. This method has a significant core problem: the connection is not reliable enough to prevent dislodgement and cannot withstand the external force exerted by the patient during daily activities or dialysis. The traditional spiral connection relies solely on the thread engagement for fixation and lacks a dedicated limiting and locking mechanism. When the patient turns over, bends over, or inadvertently pulls on the catheter, the threads can easily loosen, leading to dislodgement. Once dislodgement occurs, it can cause a massive outflow of blood, resulting in hemorrhagic shock and directly interrupting dialysis treatment. If treatment is not timely, it can seriously endanger the patient's life. To improve the dislodgement prevention effect, some connection structures are designed to be overly complex, requiring medical staff to spend a lot of time on docking and locking operations. Dialysis treatment requires speed, and complex procedures can reduce the work efficiency of medical staff, especially in emergencies, potentially delaying treatment. Based on this, a quick-connect anti-dislodgement connection structure for renal dialysis catheters is proposed to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to solve the problems in the background art, and to propose a quick-connect anti-dislodgement connection structure for renal dialysis indwelling catheters.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A quick-connect anti-dislodgement connection structure for a renal dialysis indwelling catheter includes a mounting base plate, a connecting component connected to the top of the mounting base plate, a protective component connected to the left end of the connecting component, a clamping component connected to the top of the protective component, and a limiting component connected to the clamping component. The limiting component includes an arc-shaped limiting box. Arc-shaped rods are fixedly connected to the outer walls of both the front and rear ends of the arc-shaped limiting box. A limiting spring is sleeved on the lower outer wall of each set of arc-shaped rods. A sliding slider is slidably connected to the upper outer wall of each set of arc-shaped rods. A fixed sliding rod is fixedly connected to the top of each set of sliding sliders. An abutment spring is sleeved on the upper outer wall of each set of fixed sliding rods. A limiting sliding rod is fixedly connected to the top of each set of fixed sliding rods. A connecting slider is slidably connected to the outer wall of each set of fixed sliding rods. Each of the following components is fixedly connected to a connecting rod at one end on its inner side. Each set of connecting rods is fixedly connected to a plug at its bottom. The connecting rods at the front and rear ends are fixedly connected to a truss beam on their inner sides. The sliding sliders at the front and rear ends are fixedly connected to a connecting crossbar on one end on their inner side. The connecting crossbar is rotatably connected to a central rotating shaft in its middle section. The central rotating shaft is fixedly connected to a stop rod on its outer wall. The stop rod is slidably connected to a movable slider on its outer wall. The stop rod is fixedly connected to a spherical stop block at its outer end. The movable slider is fixedly connected to a return spring at its top. The movable slider is slidably connected to a limit frame on its outer wall.

[0006] In the above-mentioned quick-connect anti-dislodgement connection structure for a renal dialysis indwelling catheter, the connection assembly includes a support column fixedly connected to the top of the mounting base plate. A limiting sleeve is fixedly connected to the left end of the top of the support column. A pressure spring is rotatably connected to the inner wall of the right end of the limiting sleeve. A limiting tooth block is fixedly connected to the left end of the pressure spring. A connecting shaft is fixedly connected to the left end of the limiting tooth block.

[0007] In the aforementioned quick-connect anti-dislodgement connection structure for a renal dialysis indwelling catheter, the protective component includes an arc-shaped protective cover. Arc-shaped side baffles are fixedly connected to the front and rear ends of the arc-shaped protective cover. An arc-shaped lower clamping plate is fixedly installed on the inner outer wall of the arc-shaped side baffles. Fixed frames are slidably connected to the front and rear sections of the bottom outer wall of the arc-shaped lower clamping plate. A connecting slide rod is fixedly connected to the inner wall of each set of fixed frames. A connecting spring is sleeved on the outer wall of the lower section of each set of connecting slide rods. An arc-shaped rack plate is slidably connected to the outer wall of the upper section of each set of connecting slide rods. A connecting frame is hinged to one end of the top of each set of arc-shaped rack plates.

[0008] In the above-mentioned quick-connect anti-dislodgement connection structure for a renal dialysis catheter, the clamping assembly includes an arc-shaped upper clamp plate. Arc-shaped rack plates are fixedly connected to the front and rear sections of the top of the arc-shaped upper clamp plate. A fixing frame is slidably connected to the inner side of each set of arc-shaped rack plates. A transmission gear is rotatably connected to each set of fixing frames. A sealing edge is fixedly connected to the bottom right end of the arc-shaped upper clamp plate, and an elastic pad is fixedly connected to the bottom of the sealing edge.

[0009] In the aforementioned quick-connect anti-dislodgement connection structure for a renal dialysis catheter, the limiting component is located on the front and rear sections of the left side of the arc-shaped upper clamping plate. The arc-shaped limiting box is fixedly connected to the inner wall of the front and rear sections of the arc-shaped upper clamping plate, and the front and rear sections of the arc-shaped limiting box have limiting sliding openings. The connecting crossbar is slidably connected to the inner wall of the limiting sliding opening. Multiple sets of limiting insertion ports are equidistantly arranged on the circumference of the front and rear sections of the arc-shaped limiting box. The insertion block is slidably connected to the inner wall of the limiting insertion port. The abutment spring is located on the top of the connecting slider. The connecting rod is slidably connected to the inner wall of the limiting sliding rod. The top of the limiting frame is fixedly connected to the inner wall of the bottom of the arc-shaped limiting box.

[0010] In the above-mentioned quick-connect anti-dislodgement connection structure for a renal dialysis indwelling catheter, a toothed groove with the same size as the limiting toothed block is provided on the left side of the inner wall of the limiting sleeve, and a material ejection groove is provided on the right side of the inner wall of the limiting sleeve, and the connecting shaft is sleeved on the left inner wall of the limiting sleeve.

[0011] In the above-mentioned quick-connect anti-dislodgement connection structure for a renal dialysis indwelling catheter, the arc-shaped protective cover is fixedly connected to the left end of the connecting shaft, the outer wall of the right section of the arc-shaped rack plate is slidably connected to the inner wall of the fixed frame, the fixed frame is slidably connected to the inner wall of the arc-shaped groove opened at the front and rear sections of the arc-shaped protective cover, and the bottom of the connecting frame is slidably connected to the outer wall of the arc-shaped upper clamping plate.

[0012] In the above-mentioned quick-connect anti-dislodgement connection structure for a renal dialysis indwelling catheter, the bottom outer wall of the transmission gear meshes with the second arc-shaped rack plate, the upper outer wall of the transmission gear meshes with the bottom of the first arc-shaped rack plate, and the sealing edge is fixedly connected to the top right end of the arc-shaped lower clamping plate. The two sets of sealing edges have the same size, and the bottom left end of the arc-shaped upper clamping plate is hinged to the top left end of the arc-shaped lower clamping plate.

[0013] Compared with existing technologies, the advantages of this invention are: 1. This invention, by setting up a limiting assembly consisting of an arc-shaped limiting box, an arc-shaped rod, a limiting spring, a plug, a stop rod, a spherical stop block, and multiple sets of elastic and sliding components, can form a multi-layered mechanical locking anti-dislodgement structure after clamping. This can effectively resist the pulling force generated by the patient turning over and moving limbs, fundamentally solving the problem of easy loosening and dislodgement of traditional connection methods that rely solely on threaded engagement. It eliminates serious safety hazards such as blood gushing out and dialysis interruption caused by accidental dislodgement of the tubing, greatly improving the safety and reliability of the kidney dialysis treatment process, and providing a stable and reliable access guarantee for the dialysis treatment of end-stage renal disease patients.

[0014] 2. This invention utilizes a clamping and transmission structure comprised of an arc-shaped lower clamping plate, an arc-shaped upper clamping plate, a transmission gear, an arc-shaped rack plate (first type), and an arc-shaped rack plate (second type). Combined with an arc-shaped protective cover and arc-shaped side baffles, this structure provides comprehensive protection, ensuring stable clamping and buffering of the connection between the indwelling catheter and the dialysis tubing. This prevents external dust and impurities from intruding and causing infection risks, while the elastic pads reduce catheter clamping damage. Structurally, this reduces the possibility of loosening at the connection point under tension or impact, significantly improving the stability and safety of the tubing connection.

[0015] 3. This invention, through the setting of a connecting component consisting of a limiting sleeve, a pressure spring, a limiting tooth block, and a connecting shaft, combined with an angle-adjustable arc-shaped protective cover and matching protective and clamping structures, enables rapid docking and angle adaptive adjustment between the renal dialysis indwelling catheter and the dialysis tubing. It eliminates the cumbersome twisting operation of traditional spiral connections, allowing medical staff to complete docking and disassembly simply by inserting and pressing, significantly shortening the tubing connection time and effectively improving the efficiency of clinical dialysis operations. It is especially suitable for emergency dialysis scenarios, avoiding delays in treatment due to complex connection procedures. At the same time, the angle-adjustable design can adapt to the insertion angle of different patients' indwelling catheters, improving the versatility and adaptability of the device. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure proposed in this invention; Figure 2 This is a schematic diagram of the oblique side structure proposed in this invention; Figure 3 The present invention proposes Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 The present invention proposes Figure 2 Enlarged structural diagram at point B; Figure 5 This is a schematic diagram of a partially enlarged structure proposed in this invention; Figure 6 The present invention proposes Figure 2 Enlarged structural diagram at point C; Figure 7 This is a schematic diagram of the inclined tilting structure proposed in this invention; Figure 8 The present invention proposes Figure 7 Enlarged structural diagram at point D.

[0017] In the diagram: 1. Mounting base plate; 2. Support column; 3. Limiting sleeve; 4. Compression spring; 5. Limiting tooth block; 6. Connecting shaft; 7. Arc-shaped lower clamping plate; 8. Arc-shaped side baffle; 9. Arc-shaped protective cover; 10. Fixing frame; 11. Connecting slide rod; 12. Connecting spring; 13. Arc-shaped rack plate one; 14. Connecting frame; 15. Transmission gear; 16. Fixing frame; 17. Arc-shaped limiting box; 18. Arc-shaped rod; 19. Limiting spring 20. Spring; 21. Sliding slider; 22. Fixed slider; 23. Connecting slider; 24. Abutment spring; 25. Limiting slider; 26. Connecting rod; 27. Insert block; 28. Truss beam; 29. ​​Connecting crossbar; 30. Central pivot; 31. Abutment rod; 32. Spherical abutment block; 33. Moving slider; 34. Limiting frame; 35. Return spring; 36. Arc-shaped upper clamping plate; 37. Arc-shaped rack plate II; 38. Edge sealing; 39. Elastic pad block. Detailed Implementation

[0018] 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.

[0019] Example 1: As Figure 1-8 As shown, the present invention discloses a quick-connect anti-dislodgement connection structure for a renal dialysis catheter, comprising a mounting base 1, a connecting component connected to the top of the mounting base 1, a protective component connected to the left end of the connecting component, a clamping component connected to the top of the protective component, and a limiting component connected to the clamping component; the limiting component includes an arc-shaped limiting box 17, with arc-shaped rods 18 fixedly connected to the outer walls of both the front and rear ends of the arc-shaped limiting box 17; a limiting spring 19 is sleeved on the lower outer wall of each set of arc-shaped rods 18; a sliding slider 20 is slidably connected to the upper outer wall of each set of arc-shaped rods 18; a fixed sliding rod 21 is fixedly connected to the top of each set of sliding sliders 20; an abutment spring 23 is sleeved on the upper outer wall of each set of fixed sliding rods 21; and a fixed sliding rod 21 is fixed to the top of each set of fixed sliding rods 21. A limiting slide bar 24 is connected. A connecting slider 22 is slidably connected to the outer wall of each set of fixed slide bars 21. A connecting rod 25 is fixedly connected to one end of the inner side of each set of connecting sliders 22. An insert block 26 is fixedly connected to the bottom of each set of connecting rods 25. A truss beam 27 is fixedly connected to the inner side of the front and rear connecting rods 25. A connecting crossbar 28 is fixedly connected to one end of the inner side of the front and rear sliding sliders 20. A central rotating shaft 29 is rotatably connected to the middle section of the connecting crossbar 28. A stop rod 30 is fixedly connected to the outer wall of the central rotating shaft 29. A movable slider 32 is slidably connected to the outer wall of the stop rod 30. A spherical stop block 31 is fixedly connected to the outer end of the stop rod 30. A return spring 34 is fixedly connected to the top of the movable slider 32. A limiting frame 33 is slidably connected to the outer wall of the movable slider 32.

[0020] In this embodiment, the insert 26 at the bottom of the connecting rod 25 moves synchronously with the connecting rod 25, disengaging from the initial limiting slot on the arc-shaped limiting box 17. At this time, the sliding slider 20 slides downward along the arc-shaped rod 18 under the elastic force of the limiting spring 19. The sliding slider 20 drives the connecting crossbar 28 to slide downward along the limiting slots of the front and rear sections of the arc-shaped limiting box 17. The central pivot 29 of the middle section of the connecting crossbar 28 moves downward synchronously, driving the abutment rod 30 and the spherical abutment block 31 to move downward. When the sliding slider 20 slides to the preset position of the lower section of the arc-shaped rod 18, the truss beam 27 is released, the abutment spring 23 releases its elastic potential energy, and pushes the connecting slider 22 to reset downward along the fixed slide rod 21. The connecting rod 25 drives the insert 26 to insert into the corresponding limiting slot on the arc-shaped limiting box 17, thereby fixing the position of the sliding slider 20.

[0021] Furthermore, the limiting components are set on the front and rear sections of the left side of the arc-shaped upper clamping plate 35, the arc-shaped limiting box 17 is fixedly connected to the inner wall of the front and rear sections of the arc-shaped upper clamping plate 35, and the front and rear sections of the arc-shaped limiting box 17 are provided with limiting slides, the connecting crossbar 28 is slidably connected to the inner wall of the limiting slide, the front and rear sections of the arc-shaped limiting box 17 are provided with multiple sets of limiting slots at equal intervals around the circumference, the insert block 26 is slidably connected to the inner wall of the limiting slot, the abutting spring 23 is set on the top of the connecting slider 22, the connecting rod 25 is slidably connected to the inner wall of the limiting slide bar 24, and the top of the limiting frame 33 is fixedly connected to the bottom inner wall of the arc-shaped limiting box 17.

[0022] Furthermore, the spherical abutment 31 at the outer end of the abutment rod 30 abuts tightly against the outer wall of the connecting slider 22, thus limiting the connecting slider 22 and preventing the insert block 26 from disengaging from the limiting socket due to accidental sliding of the connecting slider 22. At the same time, under the elastic force of the return spring 34, the moving slider 32 moves along the abutment rod 30 toward the spherical abutment 31, further enhancing the abutment force between the spherical abutment 31 and the connecting slider 22. The limiting frame 33 guides and limits the moving slider 32, preventing the moving slider 32 from disengaging from the abutment rod 30 and ensuring the stability of the locking structure.

[0023] Example 2: Compared with Example 1, another embodiment of the present invention is as follows: The connecting component includes a support column 2 fixedly connected to the top of the mounting base plate 1. A limiting sleeve 3 is fixedly connected to the top left end of the support column 2. A pressure spring 4 is rotatably connected to the inner wall of the right end of the limiting sleeve 3. A limiting tooth block 5 is fixedly connected to the left end of the pressure spring 4. A connecting shaft 6 is fixedly connected to the left end of the limiting tooth block 5.

[0024] In this embodiment, since the right end of the limiting tooth block 5 is fixedly connected to the pressure spring 4, when the limiting tooth block 5 slides to the right, it will exert a squeezing force on the pressure spring 4, causing the pressure spring 4, which is fixedly connected to the right end of the limiting tooth block 5 and the inner wall of the right end of the limiting sleeve 3, to compress and accumulate elastic potential energy. When the limiting tooth block 5 slides into the unloading groove on the right side of the limiting sleeve 3, the tooth groove of the limiting sleeve 3 no longer forms a circumferential limit on the limiting tooth block 5.

[0025] Furthermore, the left side of the inner wall of the limiting sleeve 3 is provided with a toothed groove that is the same size as the limiting toothed block 5, and the right side of the inner wall of the limiting sleeve 3 is provided with a material ejection groove, and the connecting shaft 6 is sleeved on the left inner wall of the limiting sleeve 3.

[0026] Furthermore, the arc-shaped protective cover 9 drives all its connected components to rotate synchronously, adjusting to a suitable angle that matches the docking end of the indwelling tube. After the angle adjustment is completed, the external force pulling the arc-shaped protective cover 9 is released, and the compressed pressure spring 4 releases its elastic potential energy, pushing the limit tooth block 5 fixedly connected to it to move to the left. The moved limit tooth block 5 slides back into the inner wall of the corresponding tooth block groove on the left side of the limit sleeve 3. Through the engagement of the tooth block groove and the limit tooth block 5, the angle of the connecting shaft 6 and the arc-shaped protective cover 9 is fixed, thereby keeping the angle of each component connected to the arc-shaped protective cover 9 fixed and completing the angle adjustment of the connecting components.

[0027] Example 3: Comparing Example 1 and Example 2, another embodiment of the present invention is as follows: The protective component includes an arc-shaped protective cover 9, with arc-shaped side baffles 8 fixedly connected to the front and rear ends of the arc-shaped protective cover 9. An arc-shaped lower clamping plate 7 is fixedly installed on the inner outer wall of the arc-shaped side baffle 8. Fixed frames 10 are slidably connected to the front and rear sections of the bottom outer wall of the arc-shaped lower clamping plate 7. A connecting slide rod 11 is fixedly connected to the inner wall of each set of fixed frames 10. A connecting spring 12 is sleeved on the lower outer wall of each set of connecting slide rods 11. The upper outer wall is slidably connected with an arc-shaped rack plate 13, and a connecting frame 14 is hinged to one end of the top of each arc-shaped rack plate 13; the clamping assembly includes an arc-shaped upper clamping plate 35, and arc-shaped rack plates 36 are fixedly connected to the front and rear sections of the top of the arc-shaped upper clamping plate 35. A fixing frame 16 is slidably connected to the inner side of each arc-shaped rack plate 36, and a transmission gear 15 is rotatably connected to each fixing frame 16. A sealing edge 37 is fixedly connected to the bottom right end of the arc-shaped upper clamping plate 35, and an elastic pad 38 is fixedly connected to the bottom of the sealing edge 37.

[0028] In this embodiment, the sealing edge 37 at the bottom right end of the arc-shaped upper clamping plate 35 fits against the top right end of the arc-shaped lower clamping plate 7, and the elastic pad 38 at the bottom of the sealing edge 37 is in close contact with the outer wall of the conduit. This achieves both sealing protection of the docking part, preventing dust and impurities from entering the docking part and causing infection, and also reduces the squeezing damage to the conduit during clamping through the buffering effect of the elastic pad 38. At the same time, the fixing frame 10 slides along the arc-shaped grooves of the front and rear sections of the arc-shaped protective cover 9, driving the arc-shaped rack plate 13 and the connecting frame 14 to adjust their positions synchronously, ensuring uniform clamping force.

[0029] Furthermore, the arc-shaped protective cover 9 is fixedly connected to the left end of the connecting shaft 6, the outer wall of the right section of the arc-shaped rack plate 13 is slidably connected to the inner wall of the fixed frame 10, the fixed frame 10 is slidably connected to the inner wall of the arc-shaped groove opened in the front and rear sections of the arc-shaped protective cover 9, and the bottom of the connecting frame 14 is slidably connected to the outer wall of the arc-shaped upper clamping plate 35; the bottom outer wall of the transmission gear 15 meshes with the arc-shaped rack plate 2 36, the upper outer wall of the transmission gear 15 meshes with the bottom of the arc-shaped rack plate 13, and the sealing edge 37 is fixedly connected to the top right end of the arc-shaped lower clamping plate 7. The two sets of sealing edges 37 have the same size, and the bottom left end of the arc-shaped upper clamping plate 35 is hinged to the top left end of the arc-shaped lower clamping plate 7.

[0030] Furthermore, the arc-shaped protective cover 9 and the arc-shaped side baffle 8 provide side protection for the docking parts, preventing external forces from directly impacting the docking parts and further improving the protection effect. When it is necessary to loosen the clamping structure, the arc-shaped upper clamping plate 35 is flipped in the opposite direction, the arc-shaped rack plate 2 36 moves upward, driving the transmission gear 15 to rotate counterclockwise, the arc-shaped rack plate 13 resets downward under the elastic force of the connecting spring 12, the connecting frame 14 resets simultaneously, and the arc-shaped upper clamping plate 35 and the arc-shaped lower clamping plate 7 reopen, facilitating the disassembly and maintenance of the docking parts.

[0031] Working principle: Before using the device, the overall fixation and connection component angle adjustment must be completed to match the indwelling catheter docking angle. The mounting base 1 is fixed in a suitable position for the patient during dialysis, such as a bedside bracket or a special fixing seat. The fixing effect of the mounting base 1 ensures the overall stability of the device and prevents displacement caused by the patient turning over or moving their limbs, which would affect the docking stability of the indwelling catheter. According to the docking angle of the renal dialysis indwelling catheter, the arc-shaped protective cover 9, which is fixedly connected to the connecting shaft 6, is manually pulled to the right. The arc-shaped protective cover 9 drives the connecting shaft 6, which is fixedly connected to the left end, to move to the right simultaneously. The limiting tooth block 5, which is fixedly connected to the right end of the connecting shaft 6, slides along the tooth block groove on the left inner wall of the limiting sleeve 3. Since the right end of the limiting tooth block 5 is fixedly connected to the pressure spring 4, when the limiting tooth block 5 slides to the right, it will generate a squeezing force on the pressure spring 4, so that the limiting tooth block 5, which is fixedly connected to the right end of the limiting tooth block 5, slides along the tooth block groove on the left inner wall of the limiting sleeve 3. The pressure spring 4 on the inner wall of the right end of the sleeve 3 is compressed, accumulating elastic potential energy. When the limiting tooth block 5 slides into the material return groove on the right side of the limiting sleeve 3, the tooth block groove of the limiting sleeve 3 no longer forms a circumferential limit on the limiting tooth block 5. At this time, the traction arc-shaped protective cover 9 can be rotated. The arc-shaped protective cover 9 drives all the components connected to it to rotate synchronously and adjust to a suitable angle that matches the docking end of the indwelling tube. After the angle adjustment is completed, the external force pulling the arc-shaped protective cover 9 is released, and the compressed pressure spring 4 releases its elastic potential energy, pushing the limiting tooth block 5 fixedly connected to it to move to the left. The moved limiting tooth block 5 slides back into the inner wall of the corresponding tooth block groove on the left side of the limiting sleeve 3. Through the engagement of the tooth block groove and the limiting tooth block 5, the angle of the connecting shaft 6 and the arc-shaped protective cover 9 is fixed, thereby keeping the angle of each component connected to the arc-shaped protective cover 9 fixed, completing the angle adjustment of the connecting components, and preparing for the subsequent docking of the indwelling tube. The protective and clamping components work together to wrap and clamp the connection point between the indwelling tube and the dialysis tubing, preventing direct external pulling on the connection point. After the indwelling tube is connected to the connecting component, the connection end of the dialysis tubing is aligned with the connection end of the indwelling tube. Then, the upper arc-shaped clamp 35 is pushed to rotate towards the lower arc-shaped clamp 7. During the rotation of the upper arc-shaped clamp 35, the arc-shaped rack plates 36 at its top front and rear sections move downwards simultaneously. The arc-shaped rack plates 36 and the transmission plates on the fixing frame 16... The bottom of the moving gear 15 meshes, driving the transmission gear 15 to rotate clockwise; the upper section of the transmission gear 15 meshes with the bottom of the arc-shaped rack plate 13. When the transmission gear 15 rotates, it drives the arc-shaped rack plate 13 to slide upward along the connecting slide rod 11, while stretching the connecting spring 12, so that the connecting spring 12 accumulates elastic potential energy; when the arc-shaped rack plate 13 slides upward, the connecting frame 14 at its top moves upward synchronously, forming auxiliary support for the arc-shaped upper clamping plate 35, ensuring that the arc-shaped upper clamping plate 35 can be rotated smoothly; When the upper arc-shaped clamp 35 is flipped to fit against the lower arc-shaped clamp 7, the lower arc-shaped clamp 7 and the upper arc-shaped clamp 35 together form an annular clamping space, enclosing the connection point between the indwelling tube and the dialysis tubing. At this time, the sealing edge 37 at the bottom right end of the upper arc-shaped clamp 35 fits against the top right end of the lower arc-shaped clamp 7, and the elastic pad 38 at the bottom of the sealing edge 37 is in close contact with the outer wall of the catheter. This achieves both sealing protection of the connection point, preventing dust and impurities from entering and causing infection, and also reduces the squeezing damage to the catheter during clamping through the buffering effect of the elastic pad 38. At the same time, the fixing frame 10 along the arc of the front and rear sections of the arc-shaped protective cover 9... The sliding groove drives the arc-shaped rack plate 13 and the connecting frame 14 to adjust their positions synchronously, ensuring uniform clamping force. The arc-shaped protective cover 9 and the arc-shaped side baffle 8 provide side protection for the docking part, preventing external forces from directly impacting the docking part and further improving the protection effect. When it is necessary to loosen the clamping structure, the arc-shaped upper clamping plate 35 is flipped in the opposite direction, the arc-shaped rack plate 2 36 moves upward, driving the transmission gear 15 to rotate counterclockwise. The arc-shaped rack plate 13 resets downward under the elastic force of the connecting spring 12, the connecting frame 14 resets synchronously, and the arc-shaped upper clamping plate 35 and the arc-shaped lower clamping plate 7 reopen, facilitating the disassembly and maintenance of the docking part. The limiting components are located on the left front and rear sections of the arc-shaped upper clamping plate 35. Their function is to lock and fix the clamping components, preventing the arc-shaped upper clamping plate 35 from opening accidentally, and thus preventing the docking parts from falling off due to external force. When the arc-shaped upper clamping plate 35 and the arc-shaped lower clamping plate 7 are in contact and clamping is completed, the front and rear truss beams 27 are pushed. The truss beams 27 drive the front and rear connecting rods 25 to move inward synchronously. The connecting rods 25 drive the connecting slider 22 to slide upward along the fixed slide rod 21, while compressing the abutment spring 23, so that the abutment spring 23 accumulates elastic potential energy. The insert block 26 at the bottom of the connecting rod 25 moves synchronously with the connecting rod 25 and disengages from the initial limiting insertion port on the arc-shaped limiting box 17. At this time, the sliding slider 20 slides downward along the arc-shaped rod 18 under the elastic force of the limiting spring 19. The sliding slider 20 drives the connecting crossbar 28 to slide downward along the limiting sliding port of the front and rear sections of the arc-shaped limiting box 17. The central pivot 29 of the middle section of the connecting crossbar 28 moves downward synchronously. The abutment rod 30 and the spherical abutment block 31 move downwards. When the sliding slider 20 slides to the preset position of the lower section of the arc rod 18, the truss beam 27 is released, the abutment spring 23 releases its elastic potential energy, and pushes the connecting slider 22 to return downwards along the fixed slide rod 21. The connecting rod 25 drives the insert block 26 to insert into the corresponding limit socket on the arc-shaped limit box 17, thereby fixing the position of the sliding slider 20. At this time, the spherical abutment block 31 at the outer end of the abutment rod 30 abuts tightly against the outer wall of the connecting slider 22, forming a limit on the connecting slider 22 and preventing the connecting slider 22 from sliding accidentally and causing the insert block 26 to disengage from the limit socket. At the same time, under the elastic force of the return spring 34, the moving slider 32 moves along the abutment rod 30 towards the spherical abutment block 31, further enhancing the abutment force between the spherical abutment block 31 and the connecting slider 22. The limit frame 33 plays a guiding and limiting role for the moving slider 32, preventing the moving slider 32 from disengaging from the abutment rod 30 and ensuring the stability of the locking structure. When a patient turns over or moves their limbs during dialysis, the traction force exerted on the catheter is transmitted to the clamping assembly, attempting to open the arc-shaped upper clamp 35. However, the limiting assembly forms a double lock through the engagement of the insert 26 with the limiting port and the contact of the spherical abutment 31 with the connecting slider 22, firmly fixing the position of the arc-shaped upper clamp 35 and preventing it from opening accidentally, thus avoiding loosening or detachment of the connection part. To release the lock, simply pull the limiting slide bar 24 upward, causing the fixed slide bar 21 and the connecting slider 22 to move upward. The insert 26 disengages from the limiting port, and at the same time, the connecting slider 22 presses the spherical abutment 31, causing the abutment 30 to rotate around the central axis 29. The moving slider 32 compresses the reset spring 34 and moves towards the inner end of the abutment 30. At this time, the sliding slider 20 returns to its original position under the action of the limiting spring 19, thus releasing the lock of the limiting assembly and facilitating subsequent disassembly operations.

[0032] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A quick-connect anti-dislodgement connection structure for a renal dialysis indwelling catheter, comprising a mounting base plate (1), characterized in that, The mounting base plate (1) is connected to a connecting component at its top, a protective component is connected to the left end of the connecting component, a clamping component is connected to the top of the protective component, and a limit component is connected to the clamping component. The limiting component includes an arc-shaped limiting box (17). Arc-shaped rods (18) are fixedly connected to the outer walls of the front and rear ends of the arc-shaped limiting box (17). A limiting spring (19) is sleeved on the lower outer wall of each set of arc-shaped rods (18). A sliding slider (20) is slidably connected to the upper outer wall of each set of arc-shaped rods (18). A fixed sliding rod (21) is fixedly connected to the top of each set of sliding sliders (20). An abutment spring (23) is sleeved on the upper outer wall of each set of fixed sliding rods (21). A limiting sliding rod (24) is fixedly connected to the top of each set of fixed sliding rods (21). A connecting slider (22) is slidably connected to the outer wall of each set of fixed sliding rods (21). One end of the inner side of each set of connecting sliders (22) is fixedly connected to the upper outer wall. A connecting rod (25) is fixedly connected to the bottom of each connecting rod (25). A truss beam (27) is fixedly connected to the inner side of the connecting rod (25) at the front and rear ends. A connecting crossbar (28) is fixedly connected to one end of the inner side of the sliding slider (20) at the front and rear ends. A central rotating shaft (29) is rotatably connected to the middle section of the connecting crossbar (28). A stop rod (30) is fixedly connected to the outer wall of the central rotating shaft (29). A movable slider (32) is slidably connected to the outer wall of the stop rod (30). A spherical stop block (31) is fixedly connected to the outer end of the stop rod (30). A return spring (34) is fixedly connected to the top of the movable slider (32). A limit frame (33) is slidably connected to the outer wall of the movable slider (32).

2. The quick-connect anti-dislodgement connection structure for a renal dialysis indwelling catheter according to claim 1, characterized in that, The connecting assembly includes a support column (2) fixedly connected to the top of the mounting base plate (1). A limiting sleeve (3) is fixedly connected to the left end of the top of the support column (2). A pressure spring (4) is rotatably connected to the inner wall of the right end of the limiting sleeve (3). A limiting tooth block (5) is fixedly connected to the left end of the pressure spring (4). A connecting shaft (6) is fixedly connected to the left end of the limiting tooth block (5).

3. The quick-connect anti-dislodgement connection structure for a renal dialysis catheter according to claim 1, characterized in that, The protective assembly includes an arc-shaped protective cover (9), with arc-shaped side baffles (8) fixedly connected to the front and rear ends of the arc-shaped protective cover (9). An arc-shaped lower clamping plate (7) is fixedly installed on the inner outer wall of the arc-shaped side baffle (8). A fixed frame (10) is slidably connected to the front and rear sections of the bottom outer wall of the arc-shaped lower clamping plate (7). A connecting slide rod (11) is fixedly connected to the inner wall of each set of fixed frames (10). A connecting spring (12) is sleeved on the lower outer wall of each set of connecting slide rods (11). An arc-shaped rack plate (13) is slidably connected to the upper outer wall of each set of connecting slide rods (11). A connecting frame (14) is hinged to one end of the top of each set of arc-shaped rack plates (13).

4. The quick-connect anti-dislodgement connection structure for a renal dialysis indwelling catheter according to claim 1, characterized in that, The clamping assembly includes an arc-shaped upper clamping plate (35), and arc-shaped rack plates (36) are fixedly connected to the front and rear sections of the top of the arc-shaped upper clamping plate (35). A fixing frame (16) is slidably connected to the inner side of each set of arc-shaped rack plates (36). A transmission gear (15) is rotatably connected to each set of fixing frames (16). A sealing edge (37) is fixedly connected to the bottom right end of the arc-shaped upper clamping plate (35), and an elastic pad (38) is fixedly connected to the bottom of the sealing edge (37).

5. The quick-connect anti-dislodgement connection structure for a renal dialysis catheter according to claim 1, characterized in that, The limiting component is set on the front and rear sections of the left side of the arc-shaped upper clamping plate (35). The arc-shaped limiting box (17) is fixedly connected to the inner wall of the front and rear sections of the arc-shaped upper clamping plate (35). The front and rear sections of the arc-shaped limiting box (17) are provided with limiting slides. The connecting crossbar (28) is slidably connected to the inner wall of the limiting slide. The front and rear sections of the arc-shaped limiting box (17) are provided with multiple sets of limiting slots at equal intervals. The insert (26) is slidably connected to the inner wall of the limiting slot. The abutting spring (23) is set on the top of the connecting slider (22). The connecting rod (25) is slidably connected to the inner wall of the limiting slide bar (24). The top of the limiting frame (33) is fixedly connected to the bottom inner wall of the arc-shaped limiting box (17).

6. The quick-connect anti-dislodgement connection structure for a renal dialysis indwelling catheter according to claim 2, characterized in that, The left side of the inner wall of the limiting sleeve (3) is provided with a tooth block groove with the same size as the limiting tooth block (5), and the right side of the inner wall of the limiting sleeve (3) is provided with a material ejection groove. The connecting shaft (6) is sleeved on the left inner wall of the limiting sleeve (3).

7. The quick-connect anti-dislodgement connection structure for a renal dialysis catheter according to claim 3, characterized in that, The arc-shaped protective cover (9) is fixedly connected to the left end of the connecting shaft (6), the outer wall of the right section of the arc-shaped rack plate (13) is slidably connected to the inner wall of the fixed frame (10), the fixed frame (10) is slidably connected to the inner wall of the arc-shaped sliding groove opened in the front and rear sections of the arc-shaped protective cover (9), and the bottom of the connecting frame (14) is slidably connected to the outer wall of the arc-shaped upper clamping plate (35).

8. The quick-connect anti-dislodgement connection structure for a renal dialysis catheter according to claim 4, characterized in that, The bottom outer wall of the transmission gear (15) meshes with the arc-shaped rack plate two (36), the upper section outer wall of the transmission gear (15) meshes with the bottom of the arc-shaped rack plate one (13), and the sealing edge (37) is fixedly connected to the top right end of the arc-shaped lower clamping plate (7). The two sets of sealing edges (37) have the same size. The bottom left end of the arc-shaped upper clamping plate (35) is hinged to the top left end of the arc-shaped lower clamping plate (7).

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