Drainage nursing tool for breathing and critical diseases

Abstract

The invention relates to the technical field of medical instruments, in particular to a breathing and critical disease drainage nursing tool which comprises a fixing plate and a mounting shell, a notch for a drainage tube to pass through is formed in the fixing plate, the breathing and critical disease drainage nursing tool further comprises the mounting shell and is movably mounted on the fixing plate, a moving assembly is movably arranged in the mounting shell, and the moving assembly can slide in the mounting shell; the reciprocating type torsion assembly is arranged on the moving assembly and can move in the mounting shell along with the moving assembly; the clamping assembly is arranged on the reciprocating type torsion assembly and can clamp the drainage tube, then the reciprocating type torsion assembly can drive the drainage tube to conduct reciprocating type torsion, and according to the breathing and critical disease drainage nursing tool, through the automatic and mechanical design, the drainage tube pulling efficiency is remarkably improved, and the drainage tube pulling efficiency is greatly improved. The time and difficulty of manual operation are reduced, and compared with manual operation, the operation is quicker and more accurate.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, in particular to a respiratory and critical illness drainage nursing tool. Background Art

[0002] For respiratory and critically ill patients, the main goal of drainage is to remove abnormal secretions, gases or blood from the body, aiming to restore and maintain the patency of key parts such as the chest cavity and airway, thereby accelerating the patient's recovery process. As an important treatment method, closed chest drainage plays a key role in the treatment of traumatic or spontaneous pneumothorax, hemothorax, empyema and after cardiothoracic surgery. It can effectively remove fluid, gas or blood accumulation in the chest cavity and provide patients with necessary respiratory support.

[0003] However, in clinical practice, when the patient's condition is stable and there are indications for extubation, the removal of the drainage tube becomes a critical operation. Improper extubation may lead to wound infection, bleeding and other complications. Therefore, medical staff must carefully judge and choose the appropriate extubation method based on the patient's specific situation.

[0004] Traditional methods of tube removal are mainly divided into one-time removal and gradual removal. During one-time removal, medical staff need to first rotate the drainage tube to loosen its adhesion to the surrounding tissues, and then remove it smoothly. Gradual removal requires medical staff to proceed slowly and in steps to ensure that the wound can be gradually filled with granulation tissue, thereby avoiding premature wound healing or fistula formation.

[0005] However, both of these traditional extubation methods have certain limitations. On the one hand, manual operation makes it difficult to accurately control the speed and strength of extubation, which may cause pain or discomfort to the patient. On the other hand, manual extubation is also time-consuming, which increases the workload of medical staff. Therefore, we propose a respiratory and critical care drainage nursing tool. Summary of the invention

[0006] In order to solve the above technical problems, the embodiment of the present application provides a respiratory and critical care drainage nursing tool, including a fixing plate, a notch for the drainage tube to pass through is formed on the fixing plate, and also includes:

[0007] A mounting shell, movably mounted on the fixed plate, wherein a moving component is movably arranged in the mounting shell, and the moving component can slide in the mounting shell;

[0008] A reciprocating torsion assembly is arranged on the moving assembly and can move within the mounting shell following the moving assembly;

[0009] The clamping assembly is arranged on the reciprocating torsion assembly and can clamp the drainage tube, thereby enabling the reciprocating torsion assembly to drive the drainage tube to perform reciprocating torsion.

[0010] In some embodiments, a socket is provided on the fixing plate, a mounting frame is fixedly provided on the side wall of the mounting shell, and the mounting frame is plugged into and matched with the socket.

[0011] In some embodiments, the moving component includes a driving screw rotatably set on the mounting shell, the driving screw rotatably passes through the top of the mounting shell and has a handle at the end, a connecting frame movably set in the mounting shell, a guide rod passing through the mounting shell is set on the connecting frame, the driving screw threadedly passes through the connecting frame, a connecting spring is fixedly connected to the bottom of the connecting frame, a moving plate is connected to the bottom of the connecting spring, and the moving plate is slidably set in the mounting shell.

[0012] In some embodiments, a slide groove is provided on the inner wall of the mounting shell, a damping plate is fixedly provided on the side wall of the movable plate, the damping plate contacts the inner wall of the mounting shell and the two are connected in a damping manner, and a slider is fixedly provided on the damping plate and slidably cooperates with the slide groove.

[0013] In some embodiments, the reciprocating torsion assembly includes a fixed ring and a fixed disk fixedly arranged at the bottom of the movable plate, a torsion groove is opened in the fixed ring, a torsion block is slidably arranged in the torsion groove, the clamping assembly is fixedly arranged at the bottom of the torsion block, a reset spring is connected to the torsion block, the end of the reset spring is fixedly connected to the side wall of the torsion groove, a friction block is fixedly arranged on the side wall of the torsion block, a rotating disk is rotatably connected to the bottom of the fixed disk, and a plurality of transmission blocks are fixedly arranged on the outer side of the rotating disk. When the rotating disk rotates, it can drive the transmission block to rotate and contact the outer wall of the friction block, thereby driving the friction block to move.

[0014] In some embodiments, a damping belt is also fixedly provided on the inner wall of the fixing ring, and a damping connection is formed between the transmission block and the damping belt.

[0015] In some embodiments, an adjustment groove is further provided on the inner side of the fixing ring, an adjustment rod is slidably arranged in the adjustment groove, and when the adjustment rod moves, its end can move into the torsion groove, and an adjustment handle fixedly connected to the adjustment rod is provided in the adjustment groove, a positioning screw is threaded through the adjustment handle, and the end of the positioning screw abuts against the side wall of the fixing ring.

[0016] In some embodiments, a cavity is provided in the fixed disk, a one-way shaft is rotatably arranged in the middle of the cavity, the one-way shaft is connected to the fixed disk through a one-way bearing, a transmission roller is fixedly arranged on the outer side of the one-way shaft, and a driving roller is also rotatably arranged in the cavity, the outer side of the driving roller abuts against the outer wall of the transmission roller, and can drive the transmission roller to rotate when the driving roller rotates, a coil spring is provided at the bottom of the fixed disk, and the two ends of the coil spring are respectively fixedly connected to the one-way shaft and the rotating disk.

[0017] In some embodiments, the clamping assembly includes a placement block fixedly arranged at the bottom of the torsion block, clamping blocks are slidably arranged on both sides of the placement block, an adjusting screw is rotatably arranged inside the placement block, the adjusting screw thread passes through the two clamping blocks, and the thread directions on both sides of the adjusting screw are opposite, so that the two clamping blocks can be driven to move toward each other when rotated, and a knob is fixedly connected to the outer end of the adjusting screw.

[0018] In some embodiments, a pressurized airbag is provided at the bottom of the fixing plate, and a blocking block is threadedly connected to the notch in the middle of the fixing plate.

[0019] The present invention has at least the following beneficial effects:

[0020] 1. Improve removal efficiency: Through automated and mechanized design, the efficiency of drainage tube removal is significantly improved, the time and difficulty of manual operation are reduced, and it is faster and more accurate than manual operation;

[0021] 2. Enhance patient comfort: The tool's slow, even movement and reciprocating twisting function effectively reduce pain and discomfort during extubation. It is smoother and gentler than manual operation, improving patient comfort.

[0022] 3. Reduce the burden on medical staff: Automated operation reduces manual operation of medical staff, reduces work intensity and risk, and is more stable and reliable than manual operation, allowing medical staff to focus more on the overall care of patients;

[0023] 4. Personalized adjustment: The design of the tool allows for personalized adjustment based on the patient's specific situation, such as adjusting the torsion amplitude and extubation speed, ensuring its wide applicability and flexibility, and is more precise and controllable than manual operation;

[0024] 5. Improve operational stability: Compared with manual operation, this tool achieves a more stable and controllable operation process through precise mechanical structure and design, reducing errors and risks that may be caused by improper manual operation or fatigue. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 For the present invention Figure 1 Another structural diagram;

[0027] Figure 3 For the present invention Figure 1 Schematic diagram of local structure;

[0028] Figure 4 This is a schematic diagram of the cross-sectional structure of the installation shell of the present invention;

[0029] Figure 5 For the present invention Figure 3 Schematic diagram of local structure;

[0030] Figure 6 For the present invention Figure 5 Schematic diagram of partial cross-section structure;

[0031] Figure 7 It is a schematic diagram of the cross-sectional structure of the fixing ring of the present invention;

[0032] Figure 8 For the present invention Figure 7 Schematic diagram of the structure at A in the middle;

[0033] Fig. 9 It is a schematic diagram of the block structure of the present invention;

[0034] Fig.10 This is a schematic diagram of the structure of the fixed plate in Example 2 of the present invention.

[0035] In the figure: 1. fixed plate; 2. mounting shell; 3. moving assembly; 31. driving screw; 32. connecting frame; 33. connecting spring; 34. moving plate; 35. slide groove; 36. damping plate; 37. slider; 4. reciprocating torsion assembly; 41. fixed ring; 42. fixed disk; 43. torsion groove; 44. torsion block; 45. reset spring; 46. friction block; 47. rotating disk; 48. transmission block; 49. damping belt; 410. adjustment groove; 411. adjustment rod; 412. adjustment handle; 413. positioning screw; 5. clamping assembly; 51. placement block; 52. clamping block; 53. adjusting screw; 6. mounting frame; 7. one-way shaft; 8. transmission roller; 9. driving roller; 10. coil spring; 11. pressurized airbag; 12. blocking block. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Example 1: Please refer to Figure 1-Figure 9The present invention provides a technical solution: a respiratory and critical drainage nursing tool, comprising a fixed plate 1, a notch for a drainage tube to pass through is provided on the fixed plate 1, and a mounting shell 2 movably mounted on the fixed plate 1, a moving component 3 is movably arranged in the mounting shell 2, the moving component 3 can slide in the mounting shell 2, a reciprocating torsion component 4 is arranged at the bottom of the moving component 3, and can move in the mounting shell 2 following the moving component 3, a clamping component 5 is arranged on the reciprocating torsion component 4, which can clamp the drainage tube, so that the reciprocating torsion component 4 can drive the drainage tube to reciprocate:

[0038] A socket is provided on the fixing plate 1, and a mounting frame 6 is fixedly provided on the side wall of the mounting shell 2. The mounting frame 6 is plugged into the socket, and the outer diameter of the bottom end of the mounting frame 6 is slightly larger than the inner diameter of the socket, so that the mounting frame 6 can be stably installed on the fixing plate 1.

[0039] The moving assembly 3 includes a driving screw rod 31 rotatably arranged on the mounting shell 2, the driving screw rod 31 rotatably penetrates the top of the mounting shell 2 and is provided with a handle at the end, a connecting frame 32 is movably arranged in the mounting shell 2, a guide rod penetrating the mounting shell 2 is arranged on the connecting frame 32, the driving screw rod 31 is threadedly penetrated through the connecting frame 32, a connecting spring 33 is fixedly connected to the bottom of the connecting frame 32, a moving plate 34 is connected to the bottom of the connecting spring 33, and the moving plate 34 is slidably arranged in the mounting shell 2;

[0040] The driving screw rod 31 is driven to rotate by the handle, and the driving screw rod 31 drives the connecting frame 32 to move in the installation shell 2, and the connecting frame 32 drives the moving plate 34 to follow the movement through the connecting spring 33.

[0041] A slide groove 35 is provided on the inner wall of the mounting shell 2, and a damping plate 36 is fixedly provided on the side wall of the movable plate 34. The damping plate 36 contacts the inner wall of the mounting shell 2 and the two are connected in a damping manner. A slider 37 is fixedly provided on the damping plate 36 and slidably cooperates with the slide groove 35. When the connecting frame 32 moves, it will drive the movable plate 34 to move. However, due to the friction between the damping plate 36 provided on the movable plate 34 and the inner wall of the mounting shell 2, after the connecting frame 32 finishes moving, the movable plate 34 continues to move, and the moving speed is slow and uniform.

[0042] The reciprocating torsion assembly 4 includes a fixed ring 41 and a fixed disk 42 fixedly arranged at the bottom of the moving plate 34, a torsion groove 43 is provided in the fixed ring 41, a torsion block 44 is slidably arranged in the torsion groove 43, a clamping assembly 5 is fixedly arranged at the bottom end of the torsion block 44, a return spring 45 is connected to the torsion block 44, the end of the return spring 45 is fixedly connected to the side wall of the torsion groove 43, a friction block 46 is fixedly arranged on the side wall of the torsion block 44, a rotating disk 47 is rotatably connected to the bottom of the fixed disk 42, and a plurality of transmission blocks 48 are fixedly arranged on the outer side of the rotating disk 47;

[0043] When the rotating disk 47 rotates, it can drive the transmission block 48 to rotate and contact the outer wall of the friction block 46, thereby driving the friction block 46 to move, and the friction block 46 drives the torsion block 44 to move in the torsion groove 43. When the torsion block 44 moves to the other end of the torsion groove 43, the torsion block 44 cannot continue to move. At this time, the rotating disk 47 drives the transmission block 48 to continue to rotate, which will cause the transmission block 48 and the friction block 46 to be offset. The friction block 46 is reset under the action of the reset spring 45, and then the rotating disk 47 continues to rotate to drive the next transmission block 48 to contact the friction block 46, so that the friction block 46 drives the torsion block 44 to move.

[0044] A damping belt 49 is also fixedly provided on the inner wall of the fixing ring 41 , and a damping connection is formed between the transmission block 48 and the damping belt 49 , thereby causing friction between the transmission block 48 and the damping belt 49 , so that the transmission block 48 rotates at a uniform speed.

[0045] An adjusting groove 410 is also provided inside the fixing ring 41, and an adjusting rod 411 is slidably provided inside the adjusting groove 410. When the adjusting rod 411 moves, its end can move into the torsion groove 43. An adjusting handle 412 fixedly connected to the adjusting rod 411 is provided inside the adjusting groove 410, and a positioning screw 413 is threadedly penetrated on the adjusting handle 412, and the end of the positioning screw 413 abuts against the side wall of the fixing ring 41;

[0046] By adjusting the distance that the adjusting rod 411 extends into the torsion groove 43, the movement amplitude of the torsion block 44 can be adjusted. That is, in the initial state, the torsion block 44 needs to move from one end of the torsion groove 43 to the other end in order to disengage the friction block 46 from the transmission block 48. However, when the adjusting rod 411 extends into the torsion groove 43, the movement of the torsion block 44 is from one end of the torsion groove 43 to the end abutting against the adjusting rod 411. In this way, the torsion amplitude can be adjusted, and then the amplitude of the reciprocating rotation of the drainage tube can be adjusted.

[0047] A cavity is provided in the fixed disk 42, and a one-way shaft 7 is rotatably provided in the middle of the cavity. The one-way shaft 7 is connected to the fixed disk 42 through a one-way bearing, so that the one-way shaft 7 can only rotate in one direction in the fixed disk 42. A transmission roller 8 is fixedly provided on the outer side of the one-way shaft 7. A driving roller 9 is also rotatably provided in the cavity. The outer side of the driving roller 9 abuts against the outer wall of the transmission roller 8. When the driving roller 9 rotates, it can drive the transmission roller 8 to rotate, thereby driving the one-way shaft 7 to rotate. A coil spring 10 is provided at the bottom of the fixed disk 42, and the two ends of the coil spring 10 are fixedly connected to the one-way shaft 7 and the rotating disk 47 respectively.

[0048] When the one-way shaft 7 rotates, the coil spring 10 can be driven to store force, and due to the one-way rotation of the one-way shaft 7, the coil spring 10 is released from the other end when released.

[0049] The clamping assembly 5 includes a placement block 51 fixedly arranged at the bottom of the torsion block 44, and clamping blocks 52 are slidably arranged on both sides of the placement block 51. An adjusting screw 53 is rotatably arranged inside the placement block 51. The adjusting screw 53 threads through the two clamping blocks 52, and the threads on both sides of the adjusting screw 53 are in opposite directions, so that the two clamping blocks 52 can be driven to move toward each other when rotated, thereby enabling the clamping blocks 52 to clamp the drainage tube, and a knob is fixedly connected to the outer end of the adjusting screw 53.

[0050] In summary, when in use, firstly, the fixing plate 1 is attached to the drainage site of the patient. The fixing plate 1 can be connected to the patient's skin using medical tape so that the fixing plate 1 is stably placed at the drainage site. When placed, the drainage tube can pass through the notch on the fixing plate 1, so that the drainage tube is located at the center of the fixing plate 1. Then, the knob is turned to drive the adjusting screw 53 to rotate, and the adjusting screw 53 drives the two clamping blocks 52 to move toward each other to clamp the drainage tube.

[0051] Then the medical staff can choose the extraction method according to the actual situation of the patient. When the drainage tube is adhered to the tissue, the medical staff can rotate the driving roller 9, and the driving roller 9 drives the transmission roller 8, and then drives the one-way shaft 7 to rotate, so that the coil spring 10 can store force, and due to the friction between the transmission block 48 and the damping belt 49, the end of the coil spring 10 can be released, but it is very slow, so the force storage can be completed smoothly, and then the driving screw 31 is rotated, and the driving screw 31 drives the connecting frame 32 to move in the mounting shell 2, and the mounting shell 2 drives the moving plate 34 to follow the connecting frame 32 to move through the connecting spring 33, but due to the damping provided on the moving plate 34 The friction between the plate 36 and the inner wall of the mounting shell 2 causes the movable plate 34 to rise slowly. That is, when the tube is pulled out in this way, the movable plate 34 drives the placement block 51 to move slowly, and the placement block 51 drives the drainage tube to rise slowly. At the same time, the release of the coil spring 10 can drive the rotating disk 47 to rotate. The rotating disk 47 rotates slowly and uniformly under the action of the damping connection, so that each transmission block 48 contacts and disengages from the friction block 46 in turn, driving the torsion block 44 to move back and forth in the torsion groove 43, realizing the reciprocating torsion of the drainage tube, that is, the drainage tube slowly moves upward while reciprocatingly twisting until the drainage tube is pulled out. Medical staff only need to observe nearby to prevent emergencies.

[0052] When the drainage tube is not adhered to the tissue, it is only necessary to drive the moving plate 34 to move.

[0053] Example 2: Please refer to Fig.10 The main structure of embodiment 2 is the same as that of embodiment 1, except that a pressurized air bag 11 is provided at the bottom of the fixing plate 1, and a blocking block 12 is threadedly connected to the notch in the middle of the fixing plate 1;

[0054] Since it is generally necessary to add dressings and apply pressure to the wound after extubation, after extubation and adding dressings, the airbag can be inflated to expand it to achieve a pressurization effect, and the wound is pressurized through the blocking block 12.

[0055] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0056] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A respiratory and critical care drainage nursing tool, comprising a fixing plate (1), the fixing plate (1) being provided with a notch for a drainage tube to pass through, characterized in that: Also included are: A mounting shell (2) is movably mounted on the fixed plate (1), a moving component (3) is movably arranged in the mounting shell (2), and the moving component (3) is capable of sliding in the mounting shell (2); A reciprocating torsion assembly (4) is arranged on the moving assembly (3) and is capable of following the moving assembly (3) to move within the mounting shell (2); The clamping assembly (5) is arranged on the reciprocating twisting assembly (4) and is capable of clamping the drainage tube, thereby enabling the reciprocating twisting assembly (4) to drive the drainage tube to perform reciprocating twisting.

2. The respiratory and critical care drainage nursing tool according to claim 1, characterized in that: The fixing plate (1) is provided with a plug hole, and a mounting frame (6) is fixedly provided on the side wall of the mounting shell (2), and the mounting frame (6) is plug-fitted with the plug hole.

3. The respiratory and critical care drainage nursing tool according to claim 2, characterized in that: The moving assembly (3) comprises a driving screw (31) rotatably arranged on the mounting shell (2); the driving screw (31) rotatably penetrates the top of the mounting shell (2) and is provided with a handle at the end; a connecting frame (32) is movably arranged in the mounting shell (2); a guide rod penetrating the mounting shell (2) is arranged on the connecting frame (32); the driving screw (31) is threadedly penetrated through the connecting frame (32); a connecting spring (33) is fixedly connected to the bottom of the connecting frame (32); a moving plate (34) is connected to the bottom of the connecting spring (33); and the moving plate (34) is slidably arranged in the mounting shell (2).

4. The respiratory and critical care drainage nursing tool according to claim 3, characterized in that: The inner wall of the mounting shell (2) is provided with a slide groove (35), and the side wall of the movable plate (34) is fixedly provided with a damping plate (36), the damping plate (36) is in contact with the inner wall of the mounting shell (2) and the two are dampingly connected, and a sliding block (37) is fixedly provided on the damping plate (36) and is slidably matched with the slide groove (35).

5. The respiratory and critical care drainage nursing tool according to claim 4, characterized in that: The reciprocating torsion assembly (4) comprises a fixed ring (41) and a fixed disk (42) fixedly arranged at the bottom of the movable plate (34); a torsion groove (43) is provided in the fixed ring (41); a torsion block (44) is slidably arranged in the torsion groove (43); the clamping assembly (5) is fixedly arranged at the bottom end of the torsion block (44); a return spring (45) is connected to the torsion block (44); the end of the return spring (45) is fixedly connected to the side wall of the torsion groove (43); a friction block (46) is fixedly arranged on the side wall of the torsion block (44); a rotating disk (47) is rotatably connected to the bottom of the fixed disk (42); a plurality of transmission blocks (48) are fixedly arranged on the outer side of the rotating disk (47); when the rotating disk (47) rotates, the transmission block (48) can be driven to rotate and contact the outer wall of the friction block (46), thereby driving the friction block (46) to move.

6. The respiratory and critical care drainage nursing tool according to claim 5, characterized in that: A damping belt (49) is also fixedly arranged on the inner wall of the fixing ring (41), and a damping connection is formed between the transmission block (48) and the damping belt (49).

7. The respiratory and critical care drainage nursing tool according to claim 6, characterized in that: An adjusting groove (410) is also provided on the inner side of the fixing ring (41), an adjusting rod (411) is slidably provided in the adjusting groove (410), and when the adjusting rod (411) moves, its end can move into the torsion groove (43), an adjusting handle (412) fixedly connected to the adjusting rod (411) is provided in the adjusting groove (410), a positioning screw (413) is threadedly passed through the adjusting handle (412), and the end of the positioning screw (413) abuts against the side wall of the fixing ring (41).

8. The respiratory and critical care drainage nursing tool according to claim 7, characterized in that: The fixed disk (42) is provided with a cavity, a one-way shaft (7) is rotatably arranged in the middle of the cavity, the one-way shaft (7) is connected to the fixed disk (42) through a one-way bearing, a transmission roller (8) is fixedly arranged on the outer side of the one-way shaft (7), a driving roller (9) is also rotatably arranged in the cavity, the outer side of the driving roller (9) abuts against the outer wall of the transmission roller (8), and can drive the transmission roller (8) to rotate when the driving roller (9) rotates, and a coil spring (10) is arranged at the bottom of the fixed disk (42), and the two ends of the coil spring (10) are respectively fixedly connected to the one-way shaft (7) and the rotating disk (47).

9. The respiratory and critical care drainage nursing tool according to claim 8, characterized in that: The clamping assembly (5) comprises a placement block (51) fixedly arranged at the bottom of the torsion block (44), clamping blocks (52) are slidably arranged on both sides of the placement block (51), an adjusting screw (53) is rotatably arranged inside the placement block (51), the adjusting screw (53) is threadedly passed through the two clamping blocks (52), and the threads on both sides of the adjusting screw (53) are in opposite directions, so that the two clamping blocks (52) can be driven to move towards each other when rotating, and a knob is fixedly connected to the outer end of the adjusting screw (53).

10. The respiratory and critical care drainage nursing tool according to claim 9, characterized in that: A pressurized air bag (11) is arranged at the bottom of the fixing plate (1), and a blocking block (12) is threadedly connected to the notch in the middle of the fixing plate (1).

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