Metal cable inner fixing system capable of achieving crossed double locking

Abstract

The invention relates to the technical field of metal cable internal fixing systems, in particular to a metal cable internal fixing system capable of achieving cross double locking, and solves the problem that in the prior art, after a cable is tightened, medical staff need to manually clamp a lock catch. The step not only increases the complexity of operation, but also has great uncertainty. And if the lock catch is not enough in clamping, the fixing effect can be influenced, so that the fixing is loosened, and the risk of a patient is undoubtedly increased. The invention discloses a metal cable internal fixing system capable of realizing crossed double locking. The metal cable internal fixing system comprises a cable, a retaining assembly, a lock catch and four bone nails, the retaining assembly comprises two symmetrically arranged retaining sleeves, and the two retaining sleeves are arranged in a stacked mode. According to the double-locking mechanism, the double functions of the retaining structure and the locking cable are achieved, the stability of the cable in the locking state is ensured, and the problem of fixing failure caused by insufficient clamping or excessive clamping is solved.

Description

Technical Field

[0001] The invention relates to the technical field of metal cable internal fixation systems, and in particular to a metal cable internal fixation system capable of cross-double locking. Background Art

[0002] In the field of modern medicine, metal cable internal fixation systems have been widely used for binding and fixation after limb fractures. Such systems are mainly made of non-degradable stainless steel or titanium alloy to ensure their durability and stability. Traditional metal cable internal fixation systems usually include two parts: a cable and a buckle. The buckle is designed with two locking holes to receive and fix the two ends of the cable.

[0003] In actual operation, medical staff will first wrap the cable around the bone to be fixed and the fixation plate. Then, they will insert the two ends of the cable into the two locking holes on the buckle. In order to ensure the stability of the fixation, medical staff will tighten the cable with a cable tightener. However, this step is not over yet. They also need to use a clamp to clamp the buckle to deform the buckle and the locking hole, thereby tightly clamping the cable. This series of operations is aimed at achieving a firm binding between the bone and the fixation plate.

[0004] However, although the above technology can meet the needs of fracture fixation to a certain extent, it still has some obvious disadvantages. The main problem is that after tightening the cable, medical staff still need to manually clamp the buckle. This step not only increases the complexity of the operation, but also has a lot of uncertainty. If the buckle is not clamped enough, the fixation effect may be affected, resulting in loose fixation, which will undoubtedly increase the risk to the patient. On the contrary, if it is clamped too much, it may damage the product, weaken its strength, and eventually lead to fixation failure. This situation will not only affect the patient's recovery process, but may also cause more medical problems. Summary of the invention

[0005] The purpose of the present invention is to provide a cross-double-locked metal cable internal fixation system, which solves the problem that after tightening the cable, medical personnel still need to manually clamp the buckle. This step not only increases the complexity of the operation, but also has great uncertainty. If the buckle is not clamped enough, the fixation effect may be affected, resulting in loose fixation, which will undoubtedly increase the risk of patients.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A cross-double-lockable metal cable internal fixation system comprises a cable, a backstop assembly, a locking buckle and four bone screws;

[0008] The backstop assembly comprises two symmetrically arranged backstop sleeves, the two backstop sleeves are stacked, the backstop sleeve at the bottom and the corresponding side of the backstop sleeve at the bottom are connected with a locking sleeve, the two locking sleeves are rotatably connected through a rotating structure, and a plurality of backstop structures are arranged on both sides of the interior of each backstop sleeve;

[0009] One end of the cable passes through the interior of the anti-retraction sleeve at the top and is detachably connected to one end of the lock buckle, and the other end passes through the interior of the anti-retraction sleeve at the bottom and is detachably connected to the other end of the lock buckle;

[0010] The two ends of the cable are connected to the two ends of the lock buckle after passing through the two stop sleeves to form an 8-shaped locking structure. The four bone screws are respectively arranged at the four corners inside the cable.

[0011] A locking cable is detachably connected to the interior of each locking sleeve, and one end of the locking cable is connected to the side wall of the cable.

[0012] Preferably, the lock includes a center column and two docking sleeves, which are respectively arranged at both ends of the center column. One end of the docking sleeve is provided with a docking groove that is adapted to be plugged into the end of the cable, and the other end is connected to the end of the center column through a horizontal adjustment structure. The end of the cable is detachably connected to the inner wall of the docking groove.

[0013] Preferably, a through hole communicating with the interior of the butt joint sleeve is provided on one side of the top of the butt joint sleeve, and a fixing screw is connected to the internal thread of the butt joint sleeve, and one end of the fixing screw contacts and presses against the side wall of the cable.

[0014] Preferably, the horizontal adjustment structure includes a locking screw sleeve rotatably connected to one end of the docking sleeve and an adjusting stud threadedly connected inside the locking screw sleeve, and one end of the adjusting stud is fixedly connected to the end of the center column.

[0015] Preferably, the rotating structure includes a rotating shaft, both ends of which are rotatably connected to the side walls of adjacent locking sleeves respectively, an elastic rope is fixedly connected to the center of one side of the central column, and one end of the elastic rope is fixedly connected to the side wall bolt of the rotating shaft.

[0016] Preferably, a plurality of mounting grooves are provided on both sides of the inner wall of the anti-recoil sleeve, and the anti-recoil structure includes an anti-recoil plate arranged inside the mounting groove, and the top side and the bottom side of the anti-recoil plate are connected to connecting plates through a rotating shaft and a torsion spring, and the opposite sides of the two connecting plates are respectively connected to the top and the bottom of the inner cavity of the mounting groove.

[0017] Preferably, a limit rod is vertically arranged on one side of the stop plate, and both ends of the limit rod are respectively connected to adjacent connecting plates. The length of the stop plate is greater than the length of the connecting plate, and the position of one end of the stop plate exceeds the horizontal plane position of one side of the mounting groove. The outer ring of the cable is connected to a plurality of stop rings, and the diameter of the stop ring gradually expands, with the diameter of one end being the same as the diameter of the cable and the diameter of the other end being greater than the diameter of the cable.

[0018] Preferably, two locking holes communicating with the interior of the locking sleeve are formed on one side of the locking sleeve, and a locking screw is threadedly connected to the interior of the locking hole, and one end of the locking screw contacts and tightens against the side wall of the locking cable.

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

[0020] The cross-double-locking metal cable internal fixation system of the present invention provides significant improvements to the problems of operational complexity and uncertainty of fixation effect in traditional fixation systems. First, through the innovative zigzag locking structure design, the cables are more evenly distributed around the bones, effectively dispersing stress and improving the overall stability and safety of fixation. At the same time, the double locking mechanism - including the dual functions of the stop structure and the locking cable - ensures the stability of the cable in the locked state, avoiding the problem of fixation failure caused by insufficient or excessive clamping.

[0021] In addition, the operation process of this system is more concise and efficient, reducing the workload and operation time of medical staff and the risk of human error. The integrated design of the lock and the stop assembly makes the installation and adjustment process more intuitive and convenient, without the need for additional tighteners and clamping tools, thus improving the efficiency of the operation.

[0022] More importantly, the application of this system significantly improves the treatment effect and recovery speed of patients. The stable fixation effect reduces the micro-motion of the fracture site, promotes fracture healing, and reduces the risk of secondary injury caused by loose fixation.

[0023] The present invention has at least the following beneficial effects:

[0024] 1. The practicality and effectiveness of the cross-double-locked metal cable internal fixation system of the present invention are enhanced. First of all, the combination of the docking groove of the lock buckle and the fixing screw simplifies the fixing process of the cable end, and the initial fixation can be completed without complex tools, thereby improving the efficiency of the operation. At the same time, the tightening operation of the fixing screw directly acts on the side wall of the cable, ensuring the reliability and stability of the fixation and reducing the risk of loosening due to loose fixation. The introduction of the horizontal adjustment structure gives the system higher flexibility and precision. Through the fine-tuning mechanism, medical staff can adjust the tension of the cable in real time without dismantling the fixation system to adapt to the individual differences and fracture conditions of different patients. This dynamic adjustment capability not only improves the personalized level of fixation, but also helps to promote faster healing of fractures and reduce the risk of complications caused by improper fixation. In summary, the optimized design further improves the ease of use, stability and personalization of the system while maintaining the original double locking mechanism. These improvements not only solve the problems of operational complexity and uncertainty of fixation effect in traditional fixation techniques, but also provide new ideas and methods for fracture fixation treatment, which have significant clinical application value and social benefits;

[0025] 2. The overall performance and clinical applicability of the cross-double-locked metal cable internal fixation system of the present invention are significantly improved. First, the introduction of the rotating structure not only simplifies the adjustment process of the cable direction, but also improves the accuracy and flexibility of the adjustment, so that medical staff can customize personalized fixation solutions according to the fracture conditions of different patients. Secondly, the innovative design of the stop structure effectively solves the problem of cable slippage during fixation. The synergistic effect of the stop plate, the connecting plate, the torsion spring and the limit rod forms a reliable self-locking mechanism that can automatically adapt to the diameter change of the cable and firmly lock its position. At the same time, the gradually expanding diameter design of the stop ring further enhances the stop effect and ensures the stability of the cable under stress. Finally, the consolidation of the double locking mechanism has brought the stability of the entire fixation system to a new height. The close cooperation between the locking cable and the locking screw provides additional fixing force for the cable, effectively preventing loosening or falling off due to external force. This design not only improves the reliability of fixation, but also extends the service life of the fixation system, and reduces the medical cost and time consumption caused by repeated adjustment or replacement of fixings. In summary, the improved design further enhances the flexibility, accuracy and stability of the system while maintaining the original advantages. These improvements not only solve the operational complexity and uncertainty of fixation effects in traditional fixation techniques, but also provide a more efficient and reliable solution for fracture fixation treatment, which has important clinical value and social significance. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0027] Figure 1 It is a schematic diagram of the structure of the present invention;

[0028] Figure 2 This is a schematic diagram of the lock structure of the present invention;

[0029] Figure 3 It is a schematic diagram of the structure of the backstop assembly of the present invention;

[0030] Figure 4 This is a schematic diagram of the locking hole structure of the present invention;

[0031] Figure 5 It is a schematic diagram of the structure of the anti-retraction structure of the present invention;

[0032] Figure 6 It is a schematic diagram of the structure of the stop ring of the present invention.

[0033] In the figure: 1. Lock buckle; 2. Cable; 3. Backstop assembly; 4. Bone screw; 5. Locking screw sleeve; 6. Center column; 7. Adjusting stud; 8. Docking groove; 9. Through hole; 10. Fixing screw; 11. Rotating shaft; 12. Backstop sleeve; 13. Backstop structure; 14. Locking sleeve; 15. Locking screw; 16. Locking hole; 17. Mounting groove; 18. Torsion spring; 19. Backstop plate; 20. Limit rod; 21. Connecting plate; 22. Backstop ring; 23. Locking cable. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0035] Embodiment 1, refer to Figure 1-6 , a cross-double-lockable metal cable internal fixation system, comprising a cable 2, a backstop assembly 3, a lock buckle 1 and four bone screws 4;

[0036] The backstop assembly 3 includes two symmetrically arranged backstop sleeves 12, the two backstop sleeves 12 are stacked, the bottom backstop sleeve 12 and the corresponding side of the bottom backstop sleeve 12 are connected with a locking sleeve 14, the two locking sleeves 14 are rotatably connected through a rotating structure, and a plurality of backstop structures 13 are arranged on both sides of the interior of each backstop sleeve 12;

[0037] One end of the cable 2 passes through the interior of the top stop sleeve 12 and is detachably connected to one end of the lock buckle 1, and the other end passes through the interior of the bottom stop sleeve 12 and is detachably connected to the other end of the lock buckle 1;

[0038] The two ends of the cable 2 are connected to the two ends of the lock buckle 1 after passing through the two stop sleeves 12 to form an 8-shaped locking structure. The four bone screws 4 are respectively arranged at the four corners inside the cable 2;

[0039] A locking cable 23 is detachably connected to the interior of each locking sleeve 14 , and one end of the locking cable 23 is connected to the side wall of the cable 2 .

[0040] According to the above embodiments, it can be known that: in actual application, the workflow of the cross-double-locking metal cable internal fixation system of the present invention is meticulous and efficient. First, according to the specific situation of the fracture site, the medical staff will wrap the cable 2 around the bone to be fixed and the fixation plate to ensure that the cable can evenly disperse and support the stress of the fracture end. Subsequently, one end of the cable is passed through the top stop sleeve 12, and continues to pass through the bone fixation structure to the other end, and then passes through the bottom stop sleeve 12, and finally detachably connected to the two ends of the buckle 1 to form a unique 8-shaped locking structure. In this process, four bone screws 4 are pre-implanted at the four corners of the bone to provide additional anchor points for the cable, further enhancing the stability of the fixation.

[0041] After completing the initial connection between the cable and the buckle, the medical staff rotates the rotating structure between the two locking sleeves 14 to make the anti-retraction structure 13 fit tightly against the cable and initially lock the position of the cable. Next, one end of the locking cable 23 is fixed to the side wall of the cable, and the other end is inserted into the interior of the locking sleeve 14 and firmly connected to realize a double locking mechanism. This step not only simplifies the complex operation of using cable tighteners and clamps in traditional methods, but also greatly improves the accuracy and reliability of locking. The double locking mechanism ensures that the fixation between the cable and the bone is still firm even in a high-stress environment, reducing the risk of loose fixation due to improper operation.

[0042] The cross-double-locking metal cable internal fixation system of the present invention provides significant improvements to the problems of operational complexity and uncertainty of fixation effect in traditional fixation systems. First, through the innovative 8-shaped locking structure design, the cables are more evenly distributed around the bones, effectively dispersing stress and improving the overall stability and safety of fixation. At the same time, the double locking mechanism - including the dual functions of the stop structure 13 and the locking cable 23 - ensures the stability of the cable in the locked state, avoiding the problem of fixation failure caused by insufficient or excessive clamping.

[0043] In addition, the operation process of the system is more concise and efficient, reducing the workload and operation time of medical staff and the risk of human operation errors. The integrated design of the lock buckle 1 and the backstop assembly 3 makes the installation and adjustment process more intuitive and convenient, without the need for additional tighteners and clamping tools, thus improving the efficiency of the operation.

[0044] More importantly, the application of this system significantly improves the treatment effect and recovery speed of patients. The stable fixation effect reduces the micro-motion of the fracture site, promotes fracture healing, and reduces the risk of secondary injury caused by loose fixation.

[0045] Example 2, refer to Figure 1-6 ,

[0046] The lock buckle 1 includes a center column 6 and two docking sleeves, which are respectively arranged at the two ends of the center column 6. One end of the docking sleeve is provided with a docking groove 8 that is compatible with the end of the cable 2, and the other end is connected to the end of the center column 6 through a horizontal adjustment structure. The end of the cable 2 is detachably connected to the inner wall of the docking groove 8.

[0047] A through hole 9 communicating with the interior of the docking groove 8 is provided on one side of the top of the docking sleeve. A fixing screw 10 is threadedly connected to the interior of the through hole 9. One end of the fixing screw 10 contacts and presses against the side wall of the cable 2.

[0048] The horizontal adjustment structure includes a locking screw sleeve 5 rotatably connected to one end of the docking sleeve and an adjusting stud 7 threadedly connected inside the locking screw sleeve 5 , and one end of the adjusting stud 7 is fixedly connected to the end of the center column 6 .

[0049] According to the above embodiments, the workflow of the cross-double-locking metal cable internal fixation system of the present invention is further optimized, and the accuracy and flexibility of installation are improved. First, the medical staff arranges the cable 2 around the fracture site and the fixation plate, and then aligns the two ends of the cable with the docking groove 8 in the lock buckle 1. The lock buckle 1 is composed of a central column 6 and two docking sleeves. The design of the docking sleeves allows the cable to be easily inserted and initially positioned.

[0050] Then, the medical staff rotates the fixing screw 10 to move it downward along the thread in the through hole 9 until it is in close contact with the side wall of the cable 2 and exerts a certain pressure, thereby achieving the initial fixation of the cable end. This step not only simplifies the operation that requires additional tools in the traditional fixing method, but also ensures the stable connection between the cable and the buckle.

[0051] Next, in order to adjust the tension of the cable and further optimize the fixation effect, the medical staff can operate the horizontal adjustment structure. This structure consists of a locking screw sleeve 5 and an adjustment stud 7, one end of which is fixedly connected to the center column 6 and the other end is threadedly engaged with the locking screw sleeve 5. By rotating the locking screw sleeve 5, the position of the adjustment stud 7 in the locking screw sleeve 5 can be adjusted, thereby driving the center column 6 and the end of the cable connected thereto to move slightly in the axial direction. This fine-tuning mechanism allows medical staff to accurately adjust the tension of the cable according to actual conditions during the fixation process to ensure the best fixation effect.

[0052] After completing the above steps, the entire cable internal fixation system is installed and debugged. The double locking mechanism, including the stop assembly 3, the fixing screw 10 in the lock buckle 1 and the horizontal adjustment structure, ensures that the cable is firmly fixed around the bone, providing strong support for the patient's rehabilitation.

[0053] The practicality and effectiveness of the cross-double-locking metal cable internal fixation system of the present invention are enhanced. First, the combination of the docking groove 8 of the lock buckle 1 and the fixing screw 10 simplifies the fixing process of the cable end, and the initial fixation can be completed without complex tools, thereby improving the efficiency of the operation. At the same time, the tightening operation of the fixing screw 10 directly acts on the side wall of the cable, ensuring the reliability and stability of the fixation and reducing the risk of loosening due to loose fixation.

[0054] The introduction of the horizontal adjustment structure gives the system greater flexibility and precision. Through the fine-tuning mechanism, medical staff can adjust the tension of the cable in real time without removing the fixation system to adapt to the individual differences and fracture conditions of different patients. This dynamic adjustment capability not only improves the level of personalized fixation, but also helps promote faster healing of fractures and reduces the risk of complications caused by improper fixation.

[0055] In summary, the optimized design further improves the ease of use, stability and personalization of the system while maintaining the original double locking mechanism. These improvements not only solve the operational complexity and uncertainty of fixation effects in traditional fixation techniques, but also provide new ideas and methods for fracture fixation treatment, which have significant clinical application value and social benefits.

[0056] Example 3, refer to Figure 1-6 ,

[0057] The rotating structure includes a rotating shaft 11 , both ends of which are rotatably connected to the side walls of the adjacent locking sleeves 14 , an elastic rope is fixedly connected to the center of one side of the central column 6 , and one end of the elastic rope is fixedly connected to the side wall bolt of the rotating shaft 11 .

[0058] A plurality of mounting grooves 17 are provided on both sides of the inner wall of the anti-recoil sleeve 12. The anti-recoil structure 13 includes an anti-recoil plate 19 arranged inside the mounting groove 17. The top side and the bottom side of the anti-recoil plate 19 are connected to connecting plates 21 through a rotating shaft and a torsion spring 18. The opposite sides of the two connecting plates 21 are respectively connected to the top and the bottom of the inner cavity of the mounting groove 17.

[0059] A limit rod 20 is vertically arranged on one side of the stop plate 19, and both ends of the limit rod 20 are respectively connected to adjacent connecting plates 21. The length of the stop plate 19 is greater than the length of the connecting plate 21, and one end of the stop plate 19 is located beyond the horizontal plane position on one side of the mounting groove 17. The outer ring of the cable 2 is connected to a plurality of stop rings 22, and the diameter of the stop ring 22 gradually expands. The diameter of one end is the same as the diameter of the cable 2, and the diameter of the other end is greater than the diameter of the cable 2.

[0060] One side of the locking sleeve 14 is provided with two locking holes 16 communicating with the interior of the locking sleeve 14 . The internal threads of the locking holes 16 are connected with locking screws 15 . One end of the locking screw 15 contacts and presses against the side wall of the locking cable 23 .

[0061] According to the above embodiments, in Embodiment 3, the working process of the cross-double-locking metal cable internal fixation system of the present invention further incorporates the innovative design of the rotation structure and the stop structure on the basis of retaining the advantages of Embodiment 2, so that the operation process is more perfect and the fixation effect is more reliable. First, the medical staff follows the previous working process, arranges the cable 2 around the fracture site, and performs preliminary fixation through the docking groove 8 of the lock buckle 1 and the fixing screw 10.

[0062] Subsequently, with the intervention of the rotating structure, medical personnel can easily realize the relative rotation between the two locking sleeves 14 through the rotating shaft 11. In this process, the introduction of the elastic rope provides a certain reset force for the rotating shaft 11, ensuring that the locking sleeve 14 can remain in the desired position after the adjustment is completed to avoid accidental loosening. At the same time, this design also makes it easy for medical personnel to fine-tune the direction of the cable according to actual needs to adapt to complex fracture situations.

[0063] Next, the activation of the backstop structure 13 is a key step to ensure that the cable is firmly fixed. When the cable 2 passes through the backstop sleeve 12, the backstop ring 22 on it will contact the backstop plate 19 in turn. Due to the gradually expanding diameter design of the backstop ring 22, when the cable tries to move outward, the backstop ring 22 will push the backstop plate 19 to open outward to overcome the resistance of the torsion spring 18, thereby locking the cable position. At the same time, the cooperation of the limit rod 20 and the connecting plate 21 further limits the movement range of the backstop plate 19, ensuring that the backstop effect is stable and reliable.

[0064] Finally, the medical staff rotates the locking screw 15 and moves it downward along the thread in the locking hole 16 until it is in close contact with the side wall of the locking cable 23 and applies pressure to achieve double locking. The connection between the locking cable 23 and the side wall of the cable 2, and the tightening of the locking screw 15 on the locking cable 23, together constitute the second locking mechanism of the system, further enhancing the stability of the fixation.

[0065] The overall performance and clinical applicability of the cross-double-locking metal cable internal fixation system of the present invention are significantly improved. First, the introduction of the rotating structure not only simplifies the adjustment process of the cable direction, but also improves the accuracy and flexibility of the adjustment, allowing medical staff to customize personalized fixation solutions according to the fracture conditions of different patients.

[0066] Secondly, the innovative design of the anti-retraction structure effectively solves the problem of cable slippage during the fixing process. The synergistic effect of the anti-retraction plate 19, the connecting plate 21, the torsion spring 18 and the limit rod 20 forms a reliable self-locking mechanism that can automatically adapt to the diameter change of the cable and firmly lock its position. At the same time, the gradually expanding diameter design of the anti-retraction ring 22 further enhances the anti-retraction effect and ensures the stability of the cable under stress.

[0067] Finally, the consolidation of the double locking mechanism has brought the stability of the entire fixation system to a new level. The close fit between the locking cable 23 and the locking screw 15 provides additional fixing force for the cable, effectively preventing loosening or falling off due to external forces. This design not only improves the reliability of fixation, but also extends the service life of the fixation system, reducing the medical costs and time consumption caused by repeated adjustment or replacement of fixings.

[0068] In summary, the improved design further enhances the flexibility, accuracy and stability of the system while maintaining the original advantages. These improvements not only solve the operational complexity and uncertainty of fixation effects in traditional fixation techniques, but also provide a more efficient and reliable solution for fracture fixation treatment, which has important clinical value and social significance.

[0069] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A cross-double-lockable metal cable internal fixation system, characterized in that: include: A cable (2), a backstop assembly (3), a lock buckle (1) and four bone screws (4); The anti-retraction assembly (3) comprises two symmetrically arranged anti-retraction sleeves (12), the two anti-retraction sleeves (12) are stacked, the anti-retraction sleeve (12) at the bottom and the corresponding side of the anti-retraction sleeve (12) at the bottom are both connected with a locking sleeve (14), the two locking sleeves (14) are rotatably connected via a rotating structure, and a plurality of anti-retraction structures (13) are arranged on both sides of the interior of each anti-retraction sleeve (12); One end of the cable (2) passes through the interior of the anti-retraction sleeve (12) at the top and is detachably connected to one end of the lock buckle (1), and the other end passes through the interior of the anti-retraction sleeve (12) at the bottom and is detachably connected to the other end of the lock buckle (1); The two ends of the cable (2) are respectively passed through two stop sleeves (12) and then connected to the two ends of the lock buckle (1) to form an 8-shaped locking structure. The four bone screws (4) are respectively arranged at the four inner corners of the cable (2); A locking cable (23) is detachably connected to the interior of each locking sleeve (14), and one end of the locking cable (23) is connected to the side wall of the cable (2).

2. A cross-double-lockable metal cable internal fixation system according to claim 1, characterized in that: The lock buckle (1) comprises a central column (6) and two docking sleeves, the two docking sleeves are respectively arranged at the two ends of the central column (6), one end of the docking sleeve is provided with a docking groove (8) adapted to be plugged into the end of the cable (2), and the other end is connected to the end of the central column (6) through a horizontal adjustment structure, and the end of the cable (2) is detachably connected to the inner wall of the docking groove (8).

3. A cross-double-lockable metal cable internal fixation system according to claim 2, characterized in that: A through hole (9) communicating with the interior of the docking groove (8) is provided on one side of the top of the docking sleeve, and a fixing screw (10) is connected to the internal thread of the through hole (9), and one end of the fixing screw (10) contacts and presses against the side wall of the cable (2).

4. A cross-double-lockable metal cable internal fixation system according to claim 3, characterized in that: The horizontal adjustment structure comprises a locking screw sleeve (5) rotatably connected to one end of the docking sleeve and an adjusting stud (7) threadedly connected inside the locking screw sleeve (5); one end of the adjusting stud (7) is fixedly connected to the end of the center column (6).

5. The cross-double-lockable metal cable internal fixation system according to claim 2, characterized in that: The rotating structure comprises a rotating shaft (11), the two ends of the rotating shaft (11) are respectively rotatably connected to the side walls of the adjacent locking sleeves (14), an elastic rope is fixedly connected to the center of one side of the central column (6), and one end of the elastic rope is fixedly connected to the side wall bolt of the rotating shaft (11).

6. A cross-double-lockable metal cable internal fixation system according to claim 5, characterized in that: A plurality of mounting grooves (17) are provided on both sides of the inner wall of the anti-recoil sleeve (12); the anti-recoil structure (13) comprises an anti-recoil plate (19) arranged inside the mounting groove (17); the top side and the bottom side of the anti-recoil plate (19) are connected to connecting plates (21) via a rotating shaft and a torsion spring (18); and the opposite sides of the two connecting plates (21) are respectively connected to the top and the bottom of the inner cavity of the mounting groove (17).

7. A cross-double-lockable metal cable internal fixation system according to claim 6, characterized in that: A limit rod (20) is vertically arranged on one side of the stop plate (19), and the two ends of the limit rod (20) are respectively connected to adjacent connecting plates (21). The length of the stop plate (19) is greater than the length of the connecting plate (21), and the position of one end of the stop plate (19) exceeds the horizontal plane position of one side of the installation groove (17). The outer ring of the cable (2) is connected to a plurality of stop rings (22), and the diameter of the stop ring (22) gradually expands, with the diameter of one end being the same as the diameter of the cable (2) and the diameter of the other end being greater than the diameter of the cable (2).

8. A cross-double-lockable metal cable internal fixation system according to claim 7, characterized in that: Two locking holes (16) communicating with the interior of the locking sleeve (14) are formed on one side of the locking sleeve (14); a locking screw (15) is connected to the interior of the locking hole (16) through internal threads; one end of the locking screw (15) contacts and tightens against the side wall of the locking cable (23).

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