Drainage catheter fixing structure for operation

Abstract

A surgical drainage catheter fixing structure disclosed by the present invention comprises an adhesive plate, the rear end of the adhesive plate is provided with a fixing assembly, the rear end fixing assembly comprises a support block arranged at the upper end of the adhesive plate, the upper end of the support block is fixedly connected with a cylinder, the rear side of the cylinder is provided with an annular groove, and the annular groove is fixedly connected with the support block. A contraction ring is slidably connected into the annular groove, the contraction ring is elastically connected with the inner wall of the annular groove through a third spring, a plurality of locking ropes are wound around the outer wall of the contraction ring, two rectangular boxes are fixedly connected to the upper end of the adhesive plate, and moving blocks are slidably connected into the two rectangular boxes; the two ends of the multiple locking ropes are fixedly connected with the two moving blocks correspondingly. Through the arrangement of the rear end fixing assembly, the clamping plates and related adjusting and limiting assemblies, the two ends of the drainage tube can be rapidly fixed, the stability and reliability of fixing of the drainage catheter are improved, and the drainage speed of hydrops in the drainage tube can be adjusted by rotating a rotary knob.

Description

Technical Field

[0001] The invention relates to the technical field of drainage tubes, and in particular to a drainage catheter fixing structure for surgery. Background Art

[0002] In the modern medical field, surgical drainage catheters play a vital role in the treatment and rehabilitation of patients. They can effectively drain the body's accumulated fluid, blood or other secretions, promote wound healing, and prevent complications such as infection. However, the fixation of drainage catheters has always been a key issue in clinical practice. If they are not fixed properly, the catheter may shift or fall off, affecting the drainage effect and even causing secondary damage to the patient.

[0003] At present, traditional drainage catheter fixation methods have many disadvantages. For example, some methods use simple tape sticking, which has a poor fixation effect. The tape is easily affected by the patient's sweat and body fluids and loses its stickiness, causing the catheter to loosen. Others use sutures to fix the catheter to the patient's skin, but this not only increases the patient's pain, but also may cause wound tearing when the sutures are removed, increasing the risk of infection.

[0004] After searching, the US invention patent CN1997414A discloses a self-suture fixing device for a catheter, referring to Figure 8 , which proposed a device for automatically spreading sutures to fix the catheter, which solved the problem of catheter fixation to a certain extent. The device realizes automatic fixation of the catheter through the cooperation of a rotatable ring and sutures, improves the fixation efficiency, and simplifies the operation process. However, the fixing device of this patent still has some shortcomings in actual use. For example, it requires medical staff to constantly pull and wrap the sutures, which has many operating steps and affects the efficiency of fixation.

[0005] Therefore, it is necessary to design a drainage catheter fixing structure for surgery to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings existing in the prior art, and to propose a drainage catheter fixing structure for surgery. By setting a rear end fixing component, a splint and related adjustment and limit components, the two ends of the drainage tube can be quickly fixed, thereby improving the stability and reliability of the drainage catheter fixation, and the drainage speed of the accumulated fluid in the drainage tube can also be adjusted by turning the knob.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A drainage catheter fixing structure for surgery, including an adhesive plate, characterized in that: a fixing component is provided at the rear end of the adhesive plate, and the rear end fixing component includes a support block arranged at the upper end of the adhesive plate. A cylinder is fixedly connected to the upper end of the support block. An annular groove is provided at the rear side of the cylinder. A contraction ring is slidably connected in the annular groove. The contraction ring is elastically connected to the inner wall of the annular groove through a third spring. A plurality of locking ropes are wound around the outer wall of the contraction ring. Two rectangular boxes are fixedly connected to the upper end of the adhesive plate. A moving block is slidably connected in each of the two rectangular boxes. Two ends of each of the plurality of locking ropes are fixedly connected to the two moving blocks respectively. The number of turns of each locking rope wound around the outer wall of the contraction ring is one turn. When the two moving blocks move away from each other, both ends of each locking rope are pulled, and the radius of the circle formed by the winding of the locking rope is reduced.

[0009] Preferably, a plurality of connecting blocks are fixedly connected to the outer wall of the cylinder. A ring is fixedly connected to the rear sides of the plurality of connecting blocks together. A plurality of clamping plates are provided on the front side of the ring. A sliding groove is provided on the ring. A sliding block is slidably connected in each of the sliding grooves. Each sliding block is elastically connected to the inner wall of the corresponding sliding groove through a second spring. Each clamping plate is fixedly connected to the corresponding sliding block. A groove matching with the clamping plate is provided on the outer wall of the contraction ring.

[0010] Preferably, an adhesive layer is provided at the lower end of the adhesive plate. The adhesive layer is a pressure-sensitive adhesive. The adhesive plate is adhered around the wound by using the adhesive layer. A through hole is provided on the adhesive plate, and the through hole is used for the drainage tube to pass through.

[0011] Preferably, a pulling block is slidably connected in each of the two rectangular boxes. A delay component is provided between each pulling block and the corresponding moving block. A horizontal groove is provided on the upper end of the adhesive plate. A vertical block is slidably connected in the horizontal groove. A pull ring is fixedly connected to the upper end of the vertical block. The opposite sides of the two pulling blocks are fixedly connected with second pull ropes respectively. The other ends of the two second pull ropes are fixedly connected to the pull ring. A plurality of first guide rollers are provided on the upper end of the adhesive plate. Both of the two second pull ropes are wound around the corresponding first guide rollers. The two pulling blocks are elastically connected to the inner walls of the corresponding rectangular boxes through fourth springs.

[0012] Preferably, the adjacent sides of the two pulling blocks are fixedly connected with first pull ropes respectively. The other ends of the two first pull ropes are fixedly connected to the contraction ring. A plurality of second guide rollers are rotatably connected to the adhesive plate. Both of the two first pull ropes are wound around the corresponding second guide rollers.

[0013] Preferably, the delay component includes a delay block fixedly connected to the moving block. A T-shaped groove is provided in the delay block. A T-shaped slider is slidably connected in the T-shaped groove. One end of the T-shaped slider is fixedly connected to the pulling block.

[0014] Preferably, a fixed plate is fixedly connected to the upper end of the adhesive plate. An arc-shaped top block is fixedly connected to the inner top of the fixed plate. A fixed sleeve is fixedly connected to the lower end of the adhesive plate. A square block is slidably connected to the fixed sleeve. A threaded hole is provided at the lower end of the square block. A threaded rod is threadedly connected to the threaded hole. The lower end of the threaded rod is rotatably connected to the inner top of the transverse groove. A strip-shaped plate is fixedly connected to the upper end of the square block. A plurality of pressing blocks are fixedly connected to the upper end of the strip-shaped plate. A second gear is provided on the threaded rod. A rack is fixedly connected to the front side of the vertical block. The rack meshes with the second gear.

[0015] Preferably, it further includes a flow rate adjusting component. The flow rate adjusting component includes a rotating groove provided on the right side of the transverse groove. A short rod is rotatably connected to the inner top of the rotating groove. A knob is fixedly connected to the upper end of the short rod. A first gear is provided on the short rod. The first gear meshes with the second gear.

[0016] Preferably, it further includes a limiting component. The limiting component locks the pull ring after it is pulled, ensuring that a plurality of clamping plates can stably clamp the drainage tube. The limiting component includes a limiting post on the adhesive plate. A clamping groove is provided at the rear side of the limiting post. A limiting groove is provided at the upper end of the clamping groove. A convex block is slidably connected to the limiting groove. The convex block is elastically connected to the inner top of the limiting groove through a first spring.

[0017] The present invention has the following beneficial effects:

[0018] 1. Compared with the prior art, through the contraction of the locking rope, the clamping plate of the present invention can closely fit the drainage tube, apply stable pressure from multiple angles, effectively prevent problems such as shaking and displacement of the drainage tube during use, ensure the stability of the drainage process, and improve the safety and effectiveness of treatment;

[0019] 2. Compared with the prior art, after the fixation of the drainage tube is released, the second spring will drive the clamping plate to move back. At the same time, the two moving blocks move relatively to relax the locking rope, and the radius of its circle becomes larger until it returns to its original state. During this process, the clamping plate will be flush with the corresponding groove. Immediately afterwards, under the action of the third spring, the contraction ring resets, prompting the locking rope to wind around the outside of the contraction ring again. The entire reset process is coherent and highly automated. This design greatly improves the convenience of repeated use of the fixing structure, reduces the cumbersome operations of medical staff to manually organize the fixing device, saves time and energy, and improves work efficiency;

[0020] 3. Compared with the prior art, the overall structural design of the present invention fully considers the operational convenience of medical staff. The rear-end fixing component, splint, and related adjusting and limiting components cooperate with each other, making the fixing operation of the drainage tube easy and fast. For example, simply pulling the pull ring can achieve the quick fixation of the drainage tube, without complex steps and special skills, significantly improving the work efficiency of medical staff. Especially in emergency situations, it can gain precious treatment time for patients.

[0021] 4. Compared with the prior art, by rotating the knob, after the front end of the drainage tube is fixed, the threaded rod can be rotated again. At this time, the strip plate can drive multiple pressing blocks to move upward, squeezing the drainage tube, thereby flexibly adjusting the drainage speed of the accumulated fluid in the drainage tube and meeting the personalized treatment needs of different patients and conditions.

[0022] In summary, the present invention is superior to the prior art in terms of the stability of the drainage tube fixation, the convenience of reset, the operational convenience, and the functional diversity, effectively overcoming many defects of the traditional fixation method, providing an efficient, reliable, and fully functional solution for the fixation of surgical drainage catheters, and having extremely high clinical application value and promotion significance. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic structural diagram of a fixation structure of a surgical drainage catheter proposed by the present invention;

[0024] Figure 2 It is Figure 1 the structural schematic diagram after removing the adhesive layer in

[0025] Figure 3 It is Figure 2 the structural schematic diagram from another perspective;

[0026] Figure 4 It is Figure 2 the half-sectional view of

[0027] Figure 5 It is Figure 4 the enlarged structural schematic diagram at A in

[0028] Figure 6 It is Figure 4 the enlarged structural schematic diagram at B in

[0029] Figure 7 It is Figure 4 the enlarged structural schematic diagram at C in

[0030] Figure 8 It is the structural schematic diagram in the comparative document.

[0031] In the figure: 1 adhesive plate, 2 support block, 3 cylinder, 4 ring, 5 rectangular box, 6 moving block, 7 pulling block, 8 locking rope, 9 connecting block, 10 clamping plate, 11 first guide roller, 12 second guide roller, 13 first pulling rope, 14 second pulling rope, 15 vertical block, 16 pull ring, 17 fixing plate, 18 arc-shaped top block, 19 fixed sleeve, 20 limit post, 21 delay block, 22 T-shaped slider, 23 knob, 24 first gear, 25 rack, 26 threaded rod, 27 second gear, 28 card slot, 29 bump, 30 first spring, 31 sliding block, 32 second spring, 33 groove, 34 shrinkage ring, 35 through hole, 36 third spring, 37 strip plate, 38 pressing block, 39 square block. Detailed implementation manner

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0033] Refer to Figure 1 - Figure 7 , a drainage catheter fixing structure for surgical use, including an adhesive plate 1. A sticky layer is provided at the lower end of the adhesive plate 1, and the sticky layer is a pressure-sensitive adhesive. The adhesive plate 1 is adhered around the wound by using the sticky layer, so as to ensure that the fixing structure is closely attached to the patient's body and is not easily detached, providing a stable basis for the subsequent fixing of the drainage catheter. A through hole 35 is provided on the adhesive plate 1, and the through hole 35 is used for the drainage tube to pass through. The size and shape of the through hole 35 are carefully designed to be able to adapt to the diameters of common drainage tubes, and the edges are smooth to avoid abrasion of the drainage tube, ensuring that the drainage tube passes through smoothly and works normally. A fixing component is provided at the rear end of the adhesive plate 1. The rear-end fixing component includes a support block 2 provided at the upper end of the adhesive plate 1. A cylinder 3 is fixedly connected to the upper end of the support block 2. An annular groove is provided at the rear side of the cylinder 3. A shrinkage ring 34 is slidably connected in the annular groove. The shrinkage ring 34 is elastically connected to the inner wall of the annular groove through a third spring 36. The third spring 36 provides a restoring elastic force for the shrinkage ring 34 to ensure that the shrinkage ring 34 can return to its initial position when the fixation is released. A plurality of locking ropes 8 are wound around the outer wall of the shrinkage ring 34. The plurality of locking ropes 8 can be evenly distributed on the outer wall of the shrinkage ring 34 to ensure that the pressure applied to the drainage tube is uniform. Two rectangular boxes 5 are fixedly connected to the upper end of the adhesive plate 1. Moving blocks 6 are slidably connected in both of the two rectangular boxes 5. Both ends of the plurality of locking ropes 8 are fixedly connected to the two moving blocks 6 respectively. The number of turns of each locking rope 8 wound around the outer wall of the shrinkage ring 34 is one turn. Such a winding method not only ensures the stability of the locking rope 8 on the shrinkage ring 34, but also facilitates effectively reducing the radius of the circle formed by the locking rope 8 when the moving block 6 is pulled. When the two moving blocks 6 move away from each other, both ends of each locking rope 8 are pulled, and the radius of the circle formed by the locking rope 8 shrinks, so as to effectively fix the drainage tube.

[0034] Among them, a plurality of connecting blocks 9 are fixedly connected to the outer wall of the cylinder 3. A circular ring 4 is fixedly connected to the rear sides of the plurality of connecting blocks 9. A plurality of clamping plates 10 are arranged on the front side of the circular ring 4. A sliding groove is arranged on the circular ring 4. A sliding block 31 is slidably connected in each sliding groove. Each sliding block 31 is elastically connected to the inner wall of the corresponding sliding groove through a second spring 32. Each clamping plate 10 is fixedly connected to the corresponding sliding block 31. A groove 33 matching the clamping plate 10 is arranged on the outer wall of the shrinkage ring 34. A rubber layer is arranged on one side of each clamping plate 10 in contact with the drainage tube to protect the drainage tube.

[0035] Among them, a pulling block 7 is slidably connected in each of the two rectangular boxes 5. A delay component is arranged between each pulling block 7 and the corresponding moving block 6. The delay component is used to control the sequence of actions of the pulling block 7 and the moving block 6 to ensure the smooth progress of the entire fixing process. A horizontal groove is arranged at the upper end of the adhesive plate 1. A vertical block 15 is slidably connected in the horizontal groove. A pull ring 16 is fixedly connected to the upper end of the vertical block 15. Second pull ropes 14 are fixedly connected to the opposite sides of the two pulling blocks 7. The second pull ropes 14 have a certain strength and flexibility and can stably transmit the pulling force. The other ends of the two second pull ropes 14 are fixedly connected to the pull ring 16. A plurality of first guide rollers 11 are arranged at the upper end of the adhesive plate 1. The first guide rollers 11 can change the pulling force direction of the second pull ropes 14, reduce the friction force, and make the pulling process smoother. The two second pull ropes 14 are wound around the corresponding first guide rollers 11. The two pulling blocks 7 are elastically connected to the inner walls of the corresponding rectangular boxes 5 through fourth springs. The fourth springs provide a restoring elastic force for the pulling blocks 7 for convenient next use. First pull ropes 13 are fixedly connected to the adjacent sides of the two pulling blocks 7. The other ends of the two first pull ropes 13 are fixedly connected to the shrinkage ring 34. A plurality of second guide rollers 12 are rotatably connected to the adhesive plate 1. The second guide rollers 12 further optimize the pulling force transmission path of the first pull ropes 13 and improve the operation flexibility of the entire device. The two first pull ropes 13 are wound around the corresponding second guide rollers 12. The delay component includes a delay block 21 fixedly connected to the moving block 6. A T-shaped groove is arranged in the delay block 21. A T-shaped slider 22 is slidably connected in the T-shaped groove. One end of the T-shaped slider 22 is fixedly connected to the pulling block 7. The matching structure of the T-shaped groove and the T-shaped slider 22 is simple and reliable and can effectively realize the delay function.

[0036] Among them, a fixing plate 17 is fixedly connected to the upper end of the adhesive plate 1. An arc-shaped top block 18 is fixedly connected to the inner top of the fixing plate 17. A fixing sleeve 19 is fixedly connected to the lower end of the adhesive plate 1. A square block 39 is slidably connected to the fixing sleeve 19. A threaded hole is provided at the lower end of the square block 39. A threaded rod 26 is threadedly connected to the threaded hole. The lower end of the threaded rod 26 is rotatably connected to the inner top of the horizontal groove. A strip plate 37 is fixedly connected to the upper end of the square block 39. A plurality of pressing blocks 38 are fixedly connected to the upper end of the strip plate 37. A second gear 27 is provided on the threaded rod 26. A rack 25 is fixedly connected to the front side of the vertical block 15. The rack 25 meshes with the second gear 27. The rotation of the threaded rod 26 can drive the square block 39 to move up and down, realizing the extrusion operation on the drainage tube. By driving the vertical block 15 to move through the pull ring 16, the rack 25 is further driven to drive the second gear 27 to rotate, realizing the adjustment of the extrusion degree of the drainage tube. When the pull ring 16 is initially fixed, the rack 25 and the second gear 27 are no longer meshed, so that the subsequent rotation of the knob 23 will not drive the rack 25 to move.

[0037] Among them, a flow rate adjusting assembly is further included. The flow rate adjusting assembly includes a rotating groove provided on the right side of the horizontal groove. A short rod is rotatably connected to the inner top of the rotating groove. A knob 23 is fixedly connected to the upper end of the short rod. A first gear 24 is provided on the short rod. The first gear 24 meshes with the second gear 27.

[0038] Among them, a limiting assembly is further included. The limiting assembly locks the pull ring 16 after the pull ring 16 is pulled, ensuring that the plurality of clamping plates 10 can stably clamp the drainage tube. The limiting assembly includes a limiting post 20 on the adhesive plate 1. A clamping groove 28 is provided on the rear side of the limiting post 20. A limiting groove is provided at the upper end of the clamping groove 28. A convex block 29 is slidably connected to the limiting groove. The convex block 29 is elastically connected to the inner top of the limiting groove through a first spring 30. The rear side of the convex block 29 is an arc surface, facilitating the smooth movement of the pull ring 16 into the clamping groove 28.

[0039] The functional principle of the present invention can be elaborated through the following operation method: First, use the pressure-sensitive adhesive layer at the lower end of the adhesive plate 1 to firmly adhere the adhesive plate 1 around the wound, ensuring the stable position of the entire fixing structure. At the same time, the drainage tube passes through the through hole 35 of the adhesive plate 1. Then.

[0040] Pull the pull ring 16. When pulling the pull ring 16, the two pulling blocks 7 first move away from each other, thereby driving the contraction ring 34 to move forward through the first pull rope 13, causing the plurality of clamping plates 10 to disengage from the groove 33. When the clamping plates 10 are completely disengaged from the groove 33, at this time, the two T-shaped blocks just move to the side of the T-shaped groove away from the moving block 6. As the pull ring 16 is continuously pulled, the pulling block 7 will drive the moving block 6 to move.

[0041] When the two moving blocks 6 move away from each other, both ends of multiple locking ropes 8 will be pulled. Since each locking rope 8 winds around the outer wall of the contraction ring 34 for one circle, under the action of the pulling force, the radius of the circle wound by the locking rope 8 shrinks. At this time, the contraction ring 34 will move forward under the pulling of the locking rope 8 against the elastic force of the third spring 36. The groove 33 on the outer wall of the contraction ring 34 will push the clamping plate 10 towards the drainage tube. The clamping plate 10 is connected to the sliding block 31. The sliding block 31 slides in the sliding groove and compresses the second spring 32. Finally, the clamping plate 10 presses against the outside of the drainage tube to realize the fixation of the drainage tube.

[0042] When the pull ring 16 moves into the card slot 28, since the rear side of the convex block 29 is an arc surface, the convex block 29 moves upward to compress the first spring 30. When the pull ring 16 completely enters the card slot 28, under the elastic action of the first spring 30, the convex block 29 moves back, thus clamping the pull ring 16 in the card slot 28.

[0043] When it is necessary to release the fixation, push the convex block 29 upward and operate the pull ring 16 in the reverse direction to make the pull ring 16 move out of the card slot 28. Under the action of two fourth springs, the two pulling blocks 7 move relatively. At this time, under the action of the second spring 32, the clamping plate 10 moves back. At the same time, the two moving blocks 6 move relatively to relax the locking rope 8, and the radius of the circle of the locking rope 8 becomes larger until it returns to its original state. At this time, the clamping plate 10 will be flush with the corresponding groove 33. Under the action of the third spring 36, the contraction ring 34 resets, so that the locking rope 8 winds around the outside of the contraction ring 34 again, and the whole fixing structure returns to the initial state.

[0044] When the pull ring 16 moves forward, the rack 25 will move forward, drive the threaded rod 26 to rotate through the second gear 27, so that the square block 39 drives the strip plate 37 and the pressing block 38 to move upward, and the front side of the drainage tube is squeezed between the pressing block 38 and the arc-shaped top block 18.

[0045] If it is necessary to adjust the drainage speed of the liquid accumulation in the drainage tube, rotate the knob 23. The knob 23 drives the short rod to rotate, and the first gear 24 on the short rod rotates accordingly. Since the first gear 24 meshes with the second gear 27, the second gear 27 will drive the threaded rod 26 to rotate. When the threaded rod 26 rotates, the square block 39 threadedly connected to it will slide on the fixed sleeve 19. The square block 39 drives the strip plate 37 and the pressing block 38 to move, and then exerts different degrees of extrusion on the drainage tube to realize the adjustment of the drainage speed.

[0046] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A drainage catheter fixation structure for surgical use, comprising an adhesive plate (1), characterized in that: A fixing component is provided at the rear end of the adhesive plate (1). The rear-end fixing component includes a support block (2) provided at the upper end of the adhesive plate (1). A cylinder (3) is fixedly connected to the upper end of the support block (2). An annular groove is provided at the rear side of the cylinder (3). A shrinkage ring (34) is slidably connected in the annular groove. The shrinkage ring (34) is elastically connected to the inner wall of the annular groove by a third spring (36). A plurality of locking ropes (8) are wound around the outer wall of the shrinkage ring (34). Two rectangular boxes (5) are fixedly connected to the upper end of the adhesive plate (1). A moving block (6) is slidably connected in each of the two rectangular boxes (5). The two ends of each of the plurality of locking ropes (8) are fixedly connected to the two moving blocks (6) respectively. The number of turns of each locking rope (8) wound around the outer wall of the shrinkage ring (34) is one turn. When the two moving blocks (6) move away from each other, the two ends of each locking rope (8) are pulled, and the radius of the circle wound by the locking rope (8) is reduced.

2. The fixed structure of a drainage catheter for surgical use according to claim 1, characterized in that: A plurality of connecting blocks (9) are fixedly connected to the outer wall of the cylinder (3). A circular ring (4) is fixedly connected to the rear sides of the plurality of connecting blocks (9). A plurality of clamping plates (10) are provided at the front side of the circular ring (4). A sliding groove is provided on the circular ring (4). A sliding block (31) is slidably connected in each sliding groove. Each sliding block (31) is elastically connected to the inner wall of the corresponding sliding groove by a second spring (32). Each clamping plate (10) is fixedly connected to the corresponding sliding block (31). A groove (33) matching the clamping plate (10) is provided on the outer wall of the shrinkage ring (34).

3. The drainage catheter fixing structure for surgical use according to claim 1, characterized in that: An adhesive layer is provided at the lower end of the adhesive plate (1). The adhesive layer is a pressure-sensitive adhesive. The adhesive plate (1) is adhered around the wound by using the adhesive layer. A through hole (35) is provided on the adhesive plate (1). The through hole (35) is used for the drainage tube to pass through.

4. The drainage catheter fixing structure for surgical use according to claim 1, characterized in that: A pulling block (7) is slidably connected in each of the two rectangular boxes (5). A delay component is provided between each pulling block (7) and the corresponding moving block (6). A horizontal groove is provided on the upper end of the adhesive plate (1). A vertical block (15) is slidably connected in the horizontal groove. A pull ring (16) is fixedly connected to the upper end of the vertical block (15). Second pull ropes (14) are fixedly connected to the opposite sides of the two pulling blocks (7). The other ends of the two second pull ropes (14) are fixedly connected to the pull ring (16). A plurality of first guide rollers (11) are provided on the upper end of the adhesive plate (1). The two second pull ropes (14) are wound around the corresponding first guide rollers (11). The two pulling blocks (7) are elastically connected to the inner walls of the corresponding rectangular boxes (5) by fourth springs.

5. The drainage catheter fixation structure for surgical use according to claim 4, characterized in that: First pull ropes (13) are fixedly connected to the adjacent sides of the two pulling blocks (7). The other ends of the two first pull ropes (13) are fixedly connected to the shrinkage ring (34). A plurality of second guide rollers (12) are rotatably connected to the adhesive plate (1). The two first pull ropes (13) are wound around the corresponding second guide rollers (12).

6. The fixed structure of a drainage catheter for surgical use according to claim 4, wherein: The delay component includes a delay block (21) fixedly connected to the moving block (6). A T-shaped groove is provided in the delay block (21), and a T-shaped slider (22) is slidably connected in the T-shaped groove. One end of the T-shaped slider (22) is fixedly connected to the pulling block (7).

7. The fixed structure of a drainage catheter for surgical use according to claim 5, characterized in that: The upper end of the adhesive plate (1) is fixedly connected to a fixing plate (17). An arc-shaped top block (18) is fixedly connected to the inner top of the fixing plate (17). The lower end of the adhesive plate (1) is fixedly connected to a fixed sleeve (19). A square block (39) is slidably connected to the fixed sleeve (19). A threaded hole is provided at the lower end of the square block (39), and a threaded rod (26) is threadedly connected in the threaded hole. The lower end of the threaded rod (26) is rotatably connected to the inner top of the horizontal groove. The upper end of the square block (39) is fixedly connected to a strip plate (37). A plurality of pressing blocks (38) are fixedly connected to the upper end of the strip plate (37). A second gear (27) is provided on the threaded rod (26). A rack (25) is fixedly connected to the front side of the vertical block (15), and the rack (25) meshes with the second gear (27).

8. The drainage catheter fixing structure for surgical use according to claim 7, characterized in that: It further includes a flow rate adjusting component. The flow rate adjusting component includes a rotating groove provided on the right side of the horizontal groove. A short rod is rotatably connected to the inner top of the rotating groove. A knob (23) is fixedly connected to the upper end of the short rod. A first gear (24) is provided on the short rod, and the first gear (24) meshes with the second gear (27).

9. The drainage catheter fixing structure for surgical use according to claim 2, characterized in that: It further includes a limiting component. The limiting component locks the pull ring (16) after the pull ring (16) is pulled to ensure that a plurality of clamping plates (10) can stably clamp the drainage tube. The limiting component includes a limiting post (20) on the adhesive plate (1). A clamping groove (28) is provided at the rear side of the limiting post (20). A limiting groove is provided at the upper end of the clamping groove (28), and a convex block (29) is slidably connected in the limiting groove. The convex block (29) is elastically connected to the inner top of the limiting groove through a first spring (30).

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