A tightener capable of adjusting the tightening force of titanium plate suture with loops

Abstract

The present application relates to the technical field of medical devices, and in particular to a tightener for tightening the suture of an adjustable titanium plate with loops, which includes an inner core, a winding rod, a main handle, an adjustment handle, a pressure main rod, a pressure rotor and a pressure adjustment assembly; the winding rod is connected to the inner core and is used to wind the suture; the inner core is inserted into and connected to the main handle, the adjustment handle is connected to the main handle and the interior of the adjustment handle is hollow, the pressure main rod is arranged inside the adjustment handle and is rotatably connected to the adjustment handle, the pressure main rod and the inner core are perpendicular, the inner core and the pressure main rod are formed with V-shaped grooves, the inner core and the pressure main rod are surrounded by a diamond-shaped placement cavity, the pressure rotor is arranged in the placement cavity, and the pressure adjustment assembly is arranged on the pressure main rod to adjust the pressure applied to the pressure rotor. The present application has the effect of being able to replace the doctor's hand pulling of the loop during the process of tightening the adjustable titanium plate with loops in surgery to achieve a safer tightening method.

Description

Technical Field

[0001] The present application relates to the field of medical device technology, and in particular to a tightening device with adjustable tightening force of titanium plate sutures with loops. Background Art

[0002] Titanium plate with loops is a medical device used in ligament or tendon reconstruction surgery. As an important implant, the adjustable titanium plate with loops is widely used in operations such as cruciate ligament reconstruction, acromioclavicular joint dislocation, tibiofibular syndesmotic injury, and medial patellar ligament injury repair. As a connector between bones and ligaments or tendons, the titanium plate with loops can restore the connection between bones and ligaments or tendons. The operation is simple and the recovery effect is good.

[0003] Titanium plates with loops are usually composed of titanium plates, wire loops, traction wires and flip-loop wires. The titanium plate fixation method with loops is a surgical method for cruciate ligament reconstruction. This method does not require an additional lateral condylar incision. The upper end of the ligament graft without bone blocks at both ends can be firmly fixed in the femoral bone tunnel using the built-in titanium plate with loops. It is a relatively mature and effective method of reconstructing ACL using semitendinosus tendon, gracilis tendon and other non-bone grafts.

[0004] During surgery, it is very important to tighten the titanium plate with loops to an appropriate force, which not only plays a fixing role but also prevents the sutures from cutting the ligaments. The tightening method of the titanium plate with loops recorded in the relevant technology is: in most surgeries, the doctor pulls the sutures on the titanium plate with loops by hand to tighten the titanium plate with loops for fixation. Such an operation not only requires the doctor to have rich surgical experience, but also requires the doctor to pay attention to preventing excessive force from causing injury to the doctor's hands during the pulling of the sutures. Therefore, it is of great significance to design a titanium plate tightener with loops with adjustable force. Summary of the invention

[0005] In order to replace the doctor's hands in pulling the strap loop during the process of tightening the adjustable titanium plate with strap loops in surgery to achieve a safer tightening method, the present application provides a tightening device with adjustable tightening force of the suture of the titanium plate with strap loops.

[0006] The present application provides a tightener with adjustable tightening force of titanium plate suture with loops, which adopts the following technical solution:

[0007] A tightener with adjustable tightening force of titanium plate suture with loops, comprising an inner core, a winding rod, a main handle, an adjustment handle, a pressure main rod, a pressure rotor and a pressure adjustment component;

[0008] The winding rod is connected to the inner core and is used for winding the suture;

[0009] The inner core is passed through the main handle and connected to the main handle, the adjusting handle is connected to the main handle and the adjusting handle is hollow inside, the pressure main rod is arranged inside the adjusting handle and is rotatably connected to the adjusting handle, the pressure main rod and the inner core are perpendicular, the inner core and the pressure main rod are both formed with V-shaped grooves, the inner core and the pressure main rod form a diamond-shaped placement cavity, the pressure rotor is arranged in the placement cavity, and the pressure adjustment assembly is arranged on the pressure main rod for adjusting the pressure applied to the pressure rotor.

[0010] By adopting the above technical solution, during the operation, when the suture needs to be tightened, the suture is first wound around the winding rod, and then the pressure applied to the pressure rotor is adjusted by the pressure adjustment component according to the operation requirements, so as to meet the tension when the suture is tightened. After the pressure is adjusted to the appropriate size, hold the main handle with your hand and pull it hard. When the pulling force is not greater than the set pressure value, the pressure rotor will not rotate, thereby ensuring that the suture is tightened. When the pulling force is greater than the set pressure value, the pressure rotor will rotate. Due to the existence of the diamond placement cavity, a "click" sound will be emitted at this time, indicating that the force has reached the appropriate size, and the suture is loosened and tied. In this way, the doctor no longer needs to tighten the suture by hand. The tightener replaces the doctor's hand to pull the belt loop, which solves the problem that the doctor needs to tighten the belt loop titanium plate for fixation based on experience during the operation and prevent the doctor's hands from being cut by the suture, and realizes a safer suture tightening method.

[0011] Optionally, the pressure adjusting assembly includes a first spring, a pressure adjusting handle and a sliding block, the pressure main rod includes a pushing column and a center shaft, the pushing column and the center shaft are rotatably connected, the V-shaped groove is processed on the pushing column, the pressure adjusting handle is fixedly connected to the center shaft, the sliding block is threadedly connected to the center shaft, the first spring is connected between the pushing column and the sliding block, and the adjusting handle is provided with a first limit member for limiting the rotation of the sliding block.

[0012] By adopting the above technical solution, the pressure adjustment handle is rotated to drive the central axis to rotate together. Since the sliding block is threadedly connected to the central axis and the rotation of the sliding block is limited by the first limit member, when the central axis rotates, the sliding block can move toward or away from the pushing column. In this way, the sliding block can move along the length direction of the central axis, thereby squeezing the first spring or relaxing the first spring, thereby achieving pressure adjustment.

[0013] Optionally, a dial is processed on the sliding block, and a notch is opened on the adjusting handle for observing the scale on the dial.

[0014] By adopting the above technical solution and using the dial, the size of the regulated pressure can be clearly seen, thereby ensuring the accuracy of the pressure.

[0015] Optionally, the pressure regulating assembly further comprises a locking nut, the central axis is passed through the locking nut, the locking nut is located at an end of the sliding block away from the pushing column, and the locking nut is connected to the regulating handle.

[0016] By adopting the above technical solution, the locking nut can play a limiting role and prevent the pressure main rod from escaping from the adjustment handle, thereby ensuring the stability and safety of the overall structure.

[0017] Optionally, a retaining ring is integrally formed on the central axis, and the retaining ring is arranged between the sliding block and the locking nut. An anti-slip groove is processed on one side of the retaining ring close to the locking nut, and a toggle piece is screwed on the locking nut, and the toggle piece is inserted in the anti-slip groove.

[0018] By adopting the above technical solution, when the central shaft rotates, it drives the retaining ring to rotate together. Since the anti-skid groove and the toggle piece are in contact, when the toggle piece enters from one anti-skid groove into another, a sound will be made, which can serve as a reminder.

[0019] Optionally, a locking cap is further included, wherein the locking cap is threadedly connected to the wire winding rod, a protrusion is formed on the wire winding rod, and a winding area is formed between the protrusion and the locking cap.

[0020] By adopting the above technical solution, the locking cap can compress the suture to ensure that the suture will not fall off during the pulling process.

[0021] Optionally, the locking cap is processed with anti-slip patterns.

[0022] By adopting the above technical solution, the anti-slip pattern can increase the friction force, making it easier for doctors to screw the locking cap.

[0023] Optionally, a handle cap is provided on the inner core, and the handle cap is detachably connected to the main handle.

[0024] By adopting the above technical solution and utilizing the handle cap, the detachable connection of the inner core can be achieved.

[0025] Optionally, a second spring is further included, with two ends of the second spring respectively connected to the handle cap and the inner core.

[0026] By adopting the above technical solution, the pressure value on the inner core can be adjusted by utilizing the cooperation of the second spring and the handle cap, and the second spring can be used to ensure automatic resetting of the inner core.

[0027] Optionally, a U-shaped groove is provided on the inner core, and a second limiting member is provided on the main handle, and the second limiting member is inserted into the U-shaped groove.

[0028] By adopting the above technical solution and utilizing the cooperation between the second limiting member and the U-shaped groove, the inner core can be restricted from rotating during the pulling process.

[0029] In summary, the present application includes at least one of the following beneficial technical effects:

[0030] 1. The present application provides a tightening device with adjustable tightening force of the titanium plate with loops. During the process of tightening the titanium plate with loops, the tightening device replaces the method of the doctor pulling the loops manually. The titanium plate with loops is tightened by setting a suitable force, thereby solving the problem that the doctor needs to tighten the titanium plate with loops for fixation based on experience during the operation and preventing the doctor's hands from being cut by the sutures.

[0031] 2. In the present application, the tightener with adjustable tightening force of titanium plate suture with loop includes a push column, a dial, a first spring, a pressure main rod and a pressure adjustment handle. The push column is rotatably connected to the pressure main rod, the dial is threadedly connected to the pressure main rod, the first spring is arranged between the push column and the dial, and the pressure adjustment handle is fixedly connected to the pressure main rod. The pressure adjustment handle is rotated to drive the pressure main rod to rotate together. Since the dial and the pressure main rod are threadedly connected, and the limit pin limits the rotation of the dial, the dial can be moved along the length direction of the pressure main rod, thereby squeezing the first spring or relaxing the first spring, so as to adjust the pressure;

[0032] 3. In this application, the tightener with adjustable titanium plate suture tightening force controls the force through the pressure rotor. According to the actual situation of the operation, the appropriate pressure value is set. When the pulling force is not greater than the set pressure value, the pressure rotor will not rotate, thereby ensuring that the suture is tightened; when the pulling force is greater than the set pressure value, the pressure rotor rotates, and a "click" sound can be heard after pulling hard, indicating that the force has reached the appropriate size. Through the setting of the pressure rotor, it can be clearly judged whether the force has met the requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the structure of the tightener with adjustable titanium plate suture tightening force in the present application;

[0034] Figure 2 It is a schematic diagram of the structure of the tightener with adjustable titanium plate suture tightening force with loops in the present application after the main handle and the adjustment handle are hidden;

[0035] Figure 3 It is a schematic diagram of the structure of the sliding block in this application;

[0036] Figure 4 is a schematic diagram of the structure of the adjustment handle in the present application;

[0037] Figure 5 It is a structural schematic diagram of the pressure main rod in this application;

[0038] Figure 6 is an exploded view of the pressure regulating assembly in this application.

[0039] Explanation of the accompanying drawings: 1. inner core; 2. winding rod; 3. main handle; 4. adjustment handle; 5. pressure main rod; 51. pushing column; 52. central axis; 6. pressure rotor; 7. V-shaped groove; 8. placement cavity; 9. pressure adjustment assembly; 91. first spring; 92. pressure adjustment handle; 93. sliding block; 10. dial; 11. notch; 12. locking nut; 13. retaining ring; 14. anti-slip groove; 15. toggle piece; 16. locking cap; 17. protrusion; 18. handle cap; 19. second spring; 20. U-shaped groove; 21. second limit piece; 22. first limit piece; 23. limit groove. DETAILED DESCRIPTION

[0040] The following is combined with Figure 1-6 This application is described in further detail.

[0041] The present application embodiment discloses a tightener with adjustable tightening force of titanium plate suture with loops, referring to Figure 1 and Figure 2 The tightener with adjustable tightening force of titanium plate suture with loop comprises an inner core 1, a wire winding rod 2, a main handle 3, an adjusting handle 4, a pressure main rod 5 and a pressure rotor 6. The wire winding rod 2 is connected to the inner core 1 for winding sutures. The inner core 1 is passed through the main handle 3 and connected to the main handle 3. The adjusting handle 4 is connected to the main handle 3 and the adjusting handle 4 is hollow inside. The pressure main rod 5 and the pressure rotor 6 are both arranged inside the adjusting handle 4. The pressure main rod 5 is perpendicular to the inner core 1. V-shaped grooves 7 are formed on the inner core 1 and the pressure main rod 5. The inner core 1 and the pressure main rod 5 surround a diamond-shaped placement cavity 8, and the pressure rotor 6 is arranged in the placement cavity 8.

[0042] When in use, after assembling the inner core 1 and the main handle 3, wind the suture around the winding rod 2, hold the main handle 3, and pull it hard. When the pulling force is not greater than the set pressure value, the pressure rotor 6 will not rotate, thereby ensuring that the suture is tightened. When the pulling force is greater than the set pressure value, the pressure rotor 6 will rotate. Due to the existence of the diamond placement cavity 8, a "click" sound will be emitted at this time, indicating that the force has reached an appropriate size. The suture is loosened and tied. In this way, the doctor no longer needs to tighten the suture by hand. The tightener replaces the doctor's hand to pull the belt loop, which solves the problem that the doctor needs to tighten the belt loop titanium plate for fixation based on experience during surgery and prevent the doctor's hands from being cut by the suture.

[0043] Specifically, refer to Figure 1 and Figure 2 The pressure main rod 5 includes a pushing column 51 and a central shaft 52, and the pushing column 51 and the central shaft 52 are rotatably connected, that is, a blind hole is formed on the pushing column 51, and the central shaft 52 is inserted in the blind hole. The V-shaped groove 7 is processed on the pushing column 51, wherein the diameter of the pushing column 51 is larger than the diameter of the central shaft 52, so as to facilitate the processing of the V-shaped groove 7. It should be noted that the two V-shaped grooves 7 form a rhombus-shaped placement cavity 8. Since the pressure rotor 6 is circular, when the main handle 3 is pulled, the V-shaped groove 7 on the inner core 1 squeezes the pressure rotor 6. When the pulling force is not greater than the preset pressure value of the pressure rotor 6 (the preset pressure value is the maximum pressure value that can prevent the pressure rotor 6 from rotating), the pressure rotor 6 will not rotate, thereby ensuring that the suture is tightened. When the pulling force is greater than the preset pressure value of the pressure rotor 6, the pressure rotor 6 will rotate. Due to the existence of the rhombus-shaped placement cavity 8, a "click" sound will be emitted at this time, indicating that the pulling force has met the requirements and the suture has been tightened.

[0044] During the operation, it may be necessary to adjust the preset pressure value on the pressure rotor 6 according to the actual situation to meet different surgical requirements. In order to achieve the above requirements, a pressure regulating component 9 is provided on the pressure main rod 5 to adjust the pressure applied to the pressure rotor 6.

[0045] Specifically, refer to Figure 2 and Figure 3 The pressure regulating assembly 9 includes a first spring 91, a pressure regulating handle 92 and a sliding block 93. The pressure regulating handle 92 is fixedly connected to the central shaft 52, and the sliding block 93 is threadedly connected to the central shaft 52. The first spring 91 is connected between the pushing column 51 and the sliding block 93. The regulating handle 4 is provided with a first stopper 22 for limiting the rotation of the sliding block 93. The pressure regulating handle 92 is rotated to drive the central shaft 52 to rotate together. Since the sliding block 93 is threadedly connected to the central shaft 52, and the rotation of the sliding block 93 is limited by the first stopper 22, when the central shaft 52 rotates, the sliding block 93 can move toward or away from the pushing column 51. In this way, the sliding block 93 can move along the length direction of the central shaft 52, thereby squeezing the first spring 91 or relaxing the first spring 91, thereby achieving pressure regulation.

[0046] In this embodiment, the first limiting member 22 is a top screw, and the sliding block 93 is provided with a limiting groove 23, and the end of the top screw is inserted into the limiting groove 23. In this way, when the central shaft 52 rotates, the top screw can limit the rotation of the sliding block 93, and at the same time, the limiting groove 23 can be used to ensure the sliding of the sliding block 93. The pressure regulating handle 92 adopts a detachable fixing method, and the pressure regulating handle 92 and the central shaft 52 are connected by a top screw. In order to facilitate the screwing of the pressure regulating handle 92, the pressure regulating handle 92 is subjected to anti-slip treatment. Specifically, anti-slip patterns, anti-slip protrusions, and anti-slip materials can be processed. In this embodiment, no specific limitation is made.

[0047] Reference Figure 3 and Figure 4 The sliding block 93 is provided with a scale plate 10, and the adjusting handle 4 is provided with a notch 11. The scale on the scale plate 10 can be observed through the notch 11, and the scale is different pressure values. With the scale plate 10, the magnitude of the adjusted pressure can be clearly seen to ensure the accuracy of the pressure adjustment. The scale on the scale plate 10 can be selected according to the actual situation to have the best adjustment range, so as to meet different needs.

[0048] Further, refer to Figure 2 and Figure 3 The pressure regulating assembly 9 further includes a locking nut 12, the central shaft 52 is passed through the locking nut 12 and is rotatably connected to the locking nut 12, the locking nut 12 is located at the end of the sliding block 93 away from the pushing column 51, and the locking nut 12 is connected to the regulating handle 4. The locking nut 12 can play a limiting role, which can prevent the pressure main rod 5 from escaping from the regulating handle 4, thereby ensuring the stability and safety of the overall structure. In this embodiment, the outer wall of the locking nut 12 is processed with threads, so that the locking nut 12 is threadedly connected to the regulating handle 4, that is, a detachable connection is achieved for easy assembly.

[0049] Reference Figure 5 and Figure 6 , a retaining ring 13 is integrally formed on the central shaft 52, and the retaining ring 13 is arranged between the sliding block 93 and the locking nut 12. An anti-skid groove 14 is processed on the side of the retaining ring 13 close to the locking nut 12, and a toggle piece 15 is screwed on the locking nut 12, and the toggle piece 15 is inserted in the anti-skid groove 14. On the one hand, the retaining ring 13 can limit the range of movement of the sliding block 93. On the other hand, when the central shaft 52 rotates, the retaining ring 13 is driven to rotate together. Since the anti-skid groove 14 and the toggle piece 15 are in contact, when the toggle piece 15 enters from one anti-skid groove 14 into another anti-skid groove 14, a sound will be made, which can serve as a reminder, indicating that the device is working normally. In this embodiment, the toggle piece 15 is a top screw, which is screwed on the locking nut 12 for easy replacement, and two toggle pieces 15 are provided.

[0050] Reference Figure 1 and Figure 2 The winding rod 2 is also threadedly connected with a locking cap 16, and a protrusion 17 is formed on the winding rod 2, and a winding area is formed between the protrusion 17 and the locking cap 16. When in use, the suture is wound in the winding area, and then the locking cap 16 is screwed to reduce the area of ​​the winding area, so that the suture can be compressed to ensure that the suture will not fall off during the pulling process.

[0051] Of course, in order to facilitate the screwing of the locking cap 16, the locking cap 16 is subjected to anti-skid treatment, specifically, anti-skid patterns, anti-skid protrusions, and anti-skid materials can be processed. In this embodiment, the anti-skid patterns are used as an example for explanation. In this embodiment, the connection between the inner core 1 and the winding rod 2 is also threaded. The main handle 3 is also subjected to anti-skid treatment, specifically, anti-skid patterns, anti-skid protrusions, and anti-skid materials can be processed. In this embodiment, the anti-skid patterns are used as an example for explanation.

[0052] Reference Figure 1 and Figure 2 The inner core 1 is provided with a handle cap 18, which is detachably connected to the main handle 3. In this embodiment, the detachable connection is a threaded connection. The handle cap 18 can realize the detachable connection of the inner core 1, which is convenient for the assembly and disassembly of the overall structure.

[0053] Reference Figure 1 and Figure 2 A second spring 19 is also connected between the handle cap 18 and the inner core 1. The pressure value on the inner core 1 can be adjusted by the cooperation of the second spring 19 and the handle cap 18. At the same time, the second spring 19 can ensure the automatic reset of the inner core 1.

[0054] Reference Figure 1 and Figure 2 The inner core 1 is provided with a U-shaped groove 20, and the main handle 3 is provided with a second stopper 21, which is inserted into the U-shaped groove 20. The cooperation between the second stopper 21 and the U-shaped groove 20 can prevent the inner core 1 from rotating during the pulling process, thereby improving the stability during the pulling process of the suture. In this embodiment, the second stopper 21 is also a top screw.

[0055] Of course, in this embodiment, the threaded connection can also be selectively replaced by other forms of detachable connection. According to actual conditions, the top screw can also be replaced by other connecting parts, which will not be described in detail in this embodiment.

[0056] It is understandable that, according to the structure of the titanium plate with loops, during the operation, two tighteners need to be provided, and the two tighteners are used in conjunction to complete the tightening of the sutures of the titanium plate with loops.

[0057] The implementation principle of the tightener with adjustable suture tightening force with loop titanium plate in the embodiment of the present application is as follows: when in use, firstly wind the suture around the winding rod 2, screw the locking cap 16 to compress the suture, screw the pressure adjustment handle 92 to drive the central axis 52 to rotate, thereby moving the sliding block 93, and then changing the tightness of the first spring 91, thereby changing the pressure applied to the pressure rotor 6, and adjusting the force to the most appropriate size by judging by the dial 10. Hold the main handle 3 and pull it hard. When the pulling force is not greater than the set pressure value, the pressure rotor 6 will not rotate, thereby ensuring that the suture is tightened. When the pulling force is greater than the set pressure value, the pressure rotor 6 will rotate. Due to the existence of the diamond placement cavity 8, a "click" sound will be emitted at this time, indicating that the force has reached the appropriate size, and the suture is loosened and tied. In this way, the doctor no longer needs to tighten the sutures by hand. The tightener can be used instead of the doctor pulling the strap loops by hand, which solves the problem that the doctor needs to tighten the strap loop titanium plate for fixation based on experience during surgery and prevents the doctor's hands from being cut by the sutures, thus achieving a safer suture tightening method.

[0058] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A tightener with adjustable tightening force of titanium plate suture with loop, characterized in that: It comprises an inner core (1), a winding rod (2), a main handle (3), an adjustment handle (4), a pressure main rod (5), a pressure rotor (6) and a pressure adjustment assembly (9); The winding rod (2) is connected to the inner core (1) and is used for winding sutures; The inner core (1) is inserted into the main handle (3) and connected to the main handle (3); the adjusting handle (4) is connected to the main handle (3) and the adjusting handle (4) is hollow inside; the pressure main rod (5) is arranged inside the adjusting handle (4) and is rotatably connected to the adjusting handle (4); the pressure main rod (5) and the inner core (1) are perpendicular to each other; the inner core (1) and the pressure main rod (5) are both formed with a V-shaped groove (7); the inner core (1) and the pressure main rod (5) form a diamond-shaped placement cavity (8); the pressure rotor (6) is arranged in the placement cavity (8); the pressure adjustment component (9) is arranged on the pressure main rod (5) and is used to adjust the pressure applied to the pressure rotor (6).

2. The tightener with adjustable tightening force of titanium plate suture with loop according to claim 1, characterized in that: The pressure regulating assembly (9) comprises a first spring (91), a pressure regulating handle (92) and a sliding block (93); the pressure main rod (5) comprises a pushing column (51) and a central shaft (52); the pushing column (51) and the central shaft (52) are rotatably connected; the V-shaped groove (7) is machined on the pushing column (51); the pressure regulating handle (92) is fixedly connected to the central shaft (52); the sliding block (93) is threadedly connected to the central shaft (52); the first spring (91) is connected between the pushing column (51) and the sliding block (93); and a first limiting member (22) is provided on the regulating handle (4) for limiting the rotation of the sliding block (93).

3. The tightener with adjustable tightening force of titanium plate suture with loop according to claim 2, characterized in that: The sliding block (93) is processed with a scale plate (10), and the adjusting handle (4) is provided with a notch (11) for observing the scale on the scale plate (10).

4. The tightener with adjustable tightening force of titanium plate suture with loop according to claim 3, characterized in that: The pressure regulating assembly (9) further comprises a locking nut (12), the central axis (52) being passed through the locking nut (12), the locking nut (12) being located at an end of the sliding block (93) away from the pushing column (51), and the locking nut (12) being connected to the regulating handle (4).

5. The tightener with adjustable tightening force of titanium plate suture with loop according to claim 4, characterized in that: A retaining ring (13) is integrally formed on the central shaft (52), and the retaining ring (13) is arranged between the sliding block (93) and the locking nut (12). An anti-skid groove (14) is processed on one side of the retaining ring (13) close to the locking nut (12), and a toggle member (15) is screwed on the locking nut (12), and the toggle member (15) is inserted into the anti-skid groove (14).

6. The tightener with adjustable tightening force of titanium plate suture with loop according to claim 1, characterized in that: It also comprises a locking cap (16), wherein the locking cap (16) is threadedly connected to the winding rod (2), a protrusion (17) is formed on the winding rod (2), and a winding area is formed between the protrusion (17) and the locking cap (16).

7. The tightener with adjustable tightening force of titanium plate suture with loop according to claim 6, characterized in that: The locking cap (16) is processed with anti-slip patterns.

8. The tightener with adjustable tightening force of titanium plate suture with loop according to claim 1, characterized in that: The inner core (1) is provided with a handle cap (18), and the handle cap (18) is detachably connected to the main handle (3).

9. The tightener with adjustable tightening force of titanium plate suture with loop according to claim 8, characterized in that: It also includes a second spring (19), the two ends of which are respectively connected to the handle cap (18) and the inner core (1).

10. The tightener with adjustable tightening force of titanium plate suture with loop according to claim 9, characterized in that: The inner core (1) is provided with a U-shaped groove (20), and the main handle (3) is provided with a second limiting member (21), and the second limiting member (21) is inserted into the U-shaped groove (20).

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