A bone plate threadable for flexible connection

Abstract

The application relates to a bone plate which can be threaded for flexible connection, comprising a bone plate body, the bone plate body comprising connecting plates connected with bones through bone screws, two connecting plates are arranged along the longitudinal direction, a connecting hole for threading the bone screw is arranged on each connecting plate, a plurality of threading plates are integrally formed on the outer circumferential side of the connecting plate, and a threading hole is arranged in each threading plate. The application can realize the flexible connection between bones, and can meet the fixing effect and bone healing requirements.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to a bone plate that can be threaded for flexible connection. Background Technology

[0002] In orthopedic clinical treatment, for scenarios such as fracture repair and bone defect transplantation, stable connection between bone segments is the core link to ensure the recovery of skeletal function and the quality of bone healing. At present, the bone connection schemes widely used in clinical practice are mostly rigid fixation systems that combine bone plates and bone screws. This connection uses bone plates to connect broken bone segments, and then bone screws are used to rigidly lock the bone plates and bone segments, creating a strong fixation structure between bone segments, thereby achieving alignment and support of bone fracture ends.

[0003] However, the aforementioned bone plates used for rigid connections have limitations in practical clinical applications: First, for areas with continuous tension, such as the patella, rigid connections cannot buffer the impact of tension on the fixation structure, leading to loosening of the bone screws and preventing long-term stable fixation. Second, for children whose bones are not fully developed, excessively rigid fixation can directly damage the epiphyseal tissue, restricting normal bone growth and development and affecting the long-term development of children's skeletal function. Third, rigid connections can cause significant damage to the bone at the fracture site and completely block the transmission of slight compressive stress at the fracture ends. Appropriate compressive stress is a key factor in stimulating callus growth and promoting bone healing; a lack of this stress stimulation will delay the bone healing process and increase the risk of complications such as screw loosening.

[0004] Given the aforementioned limitations of traditional rigid bone plates in clinical applications, and considering the need for both fixation stability and a suitable bone healing microenvironment in bone-to-bone connections, there is an urgent need for a bone plate that can adapt to flexible bone-to-bone connection methods. Utility Model Content

[0005] In order to achieve flexible connection between bones and balance the fixation effect with the bone healing requirements, this application provides a suture-through bone plate for flexible connection.

[0006] The bone plate for flexible connection that can be threaded through is provided in this application, and the technical solution is as follows: A bone plate for flexible connection with threaded connection includes a bone plate body, the bone plate body including a connecting plate connected to the bone by bone screws, two connecting plates are arranged longitudinally, each connecting plate has a connecting hole for the bone screw to pass through, and multiple threading plates are integrally formed on the outer periphery of the connecting plate, each threading plate has a threading hole.

[0007] By adopting the above technical solution, two connecting plates are connected to the bone segment to be fixed through the threaded engagement of the connecting holes and the bone screws, respectively, to achieve the initial positioning of the bone segment and the bone plate body. Then, flexible connecting elements are sequentially inserted through the thread holes on the two connecting plates, and the flexible connecting elements are limited and fixed, thereby forming a flexible connection structure between the bone segments to be connected. This takes into account both the treatment requirements of bone segment fixation stability and bone healing, and makes up for the clinical application limitations of traditional rigid connecting bone plates.

[0008] Optionally, the bone plate body further includes an adjustment section, which connects the two connecting plates.

[0009] By adopting the above technical solution, during the process of inserting the flexible connecting element, the adjusting part can maintain the relative position stability between the two connecting plates, avoiding the displacement of the two connecting plates due to external operation or slight bone movement. This provides a stable operating space for the flexible connecting element to pass through the threading hole in sequence, reduces the difficulty of threading due to the shaking of the connecting plate position, and improves the convenience of inserting and fixing the flexible connecting element. After the flexible element is inserted, the adjusting part is cut off, so that the flexible connecting element connects the two connecting plates to form a flexible connection between bones.

[0010] Optionally, the adjusting part is a tie rod, which is rhomboid in shape and has its two ends, which are opposite each other in the longitudinal direction, connected to the two connecting plates respectively.

[0011] By adopting the above technical solution, when it is necessary to change the distance between the two connecting plates according to the actual needs of bone segment connection, the rhomboid structure ligament can change the angle of the two sides through deformation, thereby causing the overall length of the ligament to expand and contract, so that the spacing between the two connecting plates can adapt to the size requirements of different bone segment connection scenarios, and improve the adaptability of the overall connection system.

[0012] Optionally, the number of adjustment parts in the longitudinal direction is at least one, and multiple adjustment parts are connected to each other, with the adjustment parts located at the beginning and end ends respectively connected to the connecting plate.

[0013] By adopting the above technical solution, compared with a single adjustment part, multiple interconnected tendons can be longitudinally spliced ​​to form a longer connection structure, which can adapt to bone segment connection scenarios with different length requirements: such as the connection of long bone segment spacing in long bone fractures, and the cross-connection of large defect areas during bone defect transplantation. This solves the limitation of a single adjustment part having a fixed length and being unable to meet the adaptation of diverse bone segment spacings, and improves the adaptability of the bone plate to different clinical scenarios.

[0014] Optionally, the number of bone plates in the transverse direction is at least one, and two adjacent threading plates in the transverse direction are connected to each other, and the two threading holes are interconnected.

[0015] By adopting the above technical solution, compared with a single bone plate, the number of multiple transversely arranged bone plates can be flexibly adjusted according to the transverse width of the bone segment to be fixed, avoiding the problem of insufficient coverage of bone plates or uneven local stress caused by the large transverse size of the bone, and improving the adaptability of bone plates to bone segments with different transverse sizes.

[0016] Optionally, one of the connecting plates is provided with a wire threading clamp, which has an inlet groove, an outlet groove, and a tensioning groove. The inlet groove and the outlet groove are parallel to the longitudinal direction, and the tensioning groove is perpendicular to the inlet groove and the outlet groove and communicates with the inlet groove and the outlet groove. A tensioning screw is threaded into the tensioning groove, and the end of the tensioning screw extends into the inlet groove and the outlet groove.

[0017] By adopting the above technical solution, during clinical operation, the flexible connecting element is introduced along the inlet groove, passes through the threading hole in sequence, and then exits through the outlet groove. Subsequently, by tightening the tightening screw, the end of the screw extends into the inlet and outlet grooves and presses against the flexible connecting element. The clamping force between the screw, the element, and the inner wall of the clamp is used to achieve clamping and fixation. This simplifies the process of fixing the flexible element, and the tightness of the flexible connecting element can be adjusted by tightening the screw, which improves the convenience of operation for users.

[0018] Optionally, the cable threading clamp is provided with limiting ribs at both ends opposite each other in the transverse direction, and the end of the limiting rib away from the cable threading clamp is provided on the cable threading plate. The inner side wall of the limiting rib and the outer side wall of the connecting plate form a limiting groove that restricts the direction of the cable.

[0019] By adopting the above technical solution, the limiting groove formed by the limiting rib plate and the connecting plate guides and limits the flexible connecting element, reducing the possibility of lateral displacement or entanglement of the flexible connecting element due to bone micro-movement, operation touch, etc., ensuring that the element is always threaded along the preset path, thereby avoiding the problem of clamping failure or uneven force due to deviation from the preset path during the threading process, and improving the stability of the flexible connection.

[0020] In summary, this application includes at least one of the following beneficial technical effects: 1. This application sets up a connecting plate with connecting holes and thread holes. By connecting the connecting holes and threaded engagement with the bone screws, two connecting plates are connected to the bone segment to be fixed, achieving initial positioning of the bone segment and the bone plate body. Then, flexible connecting elements are sequentially inserted through the thread holes on the two connecting plates and the flexible connecting elements are limited and fixed, thereby forming a flexible connection structure between the bone segments to be connected. This takes into account both the stability of bone segment fixation and the treatment requirements of bone healing, making up for the clinical application limitations of traditional rigid connecting bone plates. 2. This application connects two connecting plates through an adjustment part. During the process of inserting the flexible connecting element, the adjustment part can maintain the relative position stability between the two connecting plates, avoiding the displacement of the two connecting plates due to external operation or bone micro-movement. At the same time, the rhomboid structure ligament can change the angle of the two sides through deformation, thereby causing the overall length of the ligament to expand and contract, so that the spacing between the two connecting plates can adapt to the size requirements of different bone segment connection scenarios, improving the adaptability of the overall connection system. 3. This application, by setting up a threading clamp, allows the flexible connecting element to be introduced along the inlet groove during clinical operation, passed through the threading hole in sequence, and then exited through the outlet groove. Subsequently, by tightening the tightening screw, the end of the screw extends into the inlet and outlet grooves and presses against the flexible connecting element. The clamping force between the screw, the element, and the inner wall of the clamp is used to achieve clamping and fixation. This simplifies the process of fixing the flexible element, and the tightness of the flexible connecting element can be adjusted by tightening the screw, improving the convenience of operation for the user. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the bone plate body in Embodiment 1 of this application.

[0022] Figure 2 This is a front view of the bone plate body in Embodiment 2 of this application.

[0023] Figure 3 This is a front view of the bone plate body in Embodiment 3 of this application.

[0024] Figure 4 This is a schematic diagram of the bone plate body in Embodiment 4 of this application.

[0025] Figure 5 This is a front view of the bone plate body in Embodiment 5 of this application.

[0026] Explanation of reference numerals in the attached drawings: 1. Bone plate body; 101. Connecting plate; 1011. Connecting hole; 102. Threading plate; 103. Adjustment part; 2. Threading clamp; 21. Thread inlet groove; 22. Thread outlet groove; 23. Tightening groove; 3. Tightening screw; 4. Limiting rib plate; 5. Restricting groove. Detailed Implementation

[0027] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0028] This application discloses a bone plate that can be threaded for flexible connection.

[0029] Example 1 Reference Figure 1A bone plate for flexible connection with threaded connection includes a bone plate body 1. The bone plate body 1 includes two connecting plates 101 symmetrically arranged in the longitudinal direction. The connecting plates 101 are cylindrical, and each connecting plate 101 has a connecting hole 1011 for bone screws to pass through at its center. The connecting hole 1011 is a threaded hole. The connection between the connecting plate 101 and the bone segment to be connected by bone screws is the prior art. The specific principle will not be described here.

[0030] Reference Figure 1 Each connecting plate 101 has multiple threading plates 102 integrally formed on its outer periphery. In this embodiment, there are three threading plates 102, with two threading plates 102 located on both sides of the connecting plate 101 in the lateral direction. The third threading plate 102 is located at the opposite ends of the two connecting plates 101. Each threading plate 102 is provided with a threading hole (not shown in the figure) for the flexible connecting element to pass through. The flexible connecting element can be made of materials such as titanium cable.

[0031] After the connecting plate 101 is secured to the bone segment to be connected by the bone screws, the flexible connecting element is inserted sequentially through the thread holes on the two connecting plates 101, and the flexible connecting element is limited and fixed, thereby forming a flexible connection structure between the bone segments to be connected. This takes into account both the stability of bone segment fixation and the treatment needs of bone healing, and makes up for the clinical application limitations of traditional rigid connecting bone plates.

[0032] Reference Figure 1 An adjustment part 103 is provided between the two connecting plates 101. The adjustment part 103 is a tie rod, and the two opposite sides of the tie rod are respectively connected to the two connecting plates 101 in the longitudinal direction.

[0033] Before the flexible connecting element is installed, the two connecting plates 101 are connected by the adjustment part 103 to form the bone plate body 1 unit, maintaining the relative position stability between the two connecting plates 101 and preventing the two connecting plates 101 from shifting due to external operation or bone micro-movement, thus providing a stable operating space for subsequent threading operations; after the flexible connecting element is installed, the operator needs to cut the tie rod so that the two connecting plates 101 are connected only by the flexible connecting element.

[0034] Reference Figure 1 The tie rod is rhomboid in shape. The rhomboid structure tie rod can change the angle of the two sides through deformation, thereby causing the overall length of the tie rod to stretch or contract. Specifically, the operator can stretch the tie rod by pressing it relative to each other and shorten it by spreading it apart. This allows the spacing between the two connecting plates 101 to be finely adjusted according to the size requirements of different bone segment connection scenarios.

[0035] The implementation principle of a threadable bone plate for flexible connection according to an embodiment of this application is as follows: First, the distance between the two connecting plates 101 is finely adjusted by pressing or spreading the adjustment part 103 to adapt the distance between the two connecting plates 101 to the bone segment to be connected. Then, the two connecting plates 101 are connected to the bone segment to be fixed by threading the connecting hole 1011 with the bone screw, thus achieving the initial positioning of the bone segment and the connecting plate 101. Finally, the flexible connecting element is passed through the threading hole on the two connecting plates 101 in sequence. After the threading is completed, the flexible connecting element is limited and fixed. After the fixation is completed, the adjustment part 103 is cut, so that a flexible connection structure between the two connecting plates 101 is formed between the bones. This flexible connection structure takes into account both the stability of bone segment fixation and the treatment requirements of bone healing, and makes up for the clinical application limitations of traditional rigid connecting bone plates.

[0036] Example 2 Reference Figure 2 The difference from Embodiment 1 is that the number of adjustment parts 103 in the longitudinal direction is at least one. In this embodiment, the number of adjustment parts 103 is three. The adjustment part 103 in the middle is connected to the adjustment parts 103 at both ends, and the adjustment parts 103 at both ends are respectively connected to the connecting plate 101.

[0037] The implementation principle of Example 2 is as follows: Compared with the single bone plate 1 in Example 1, the number of multiple transversely arranged bone plates 1 can be flexibly adjusted according to the transverse width of the bone segment to be fixed, avoiding the problem of insufficient coverage of bone plates or uneven local force due to the large transverse size of the bone, and improving the adaptability of bone plates to bone segments with different transverse sizes.

[0038] Example 3 Reference Figure 3 The difference from Embodiment 1 is that the number of bone plate bodies 1 in the transverse direction is at least one. In this embodiment, the number of bone plate bodies 1 is two. The two adjacent threading plates 102 in the transverse direction are connected to each other, and the threading holes inside the threading plates 102 are interconnected.

[0039] The implementation principle of Example 3 is as follows: Compared with the single bone plate 1 in Example 1, the number of multiple transversely arranged bone plates 1 can be flexibly adjusted according to the transverse width of the bone segment to be fixed, avoiding the problem of insufficient coverage of bone plates or uneven local force due to the large transverse size of the bone, and improving the adaptability of bone plates to bone segments with different transverse sizes.

[0040] Example 4 Reference Figure 4The difference from Embodiment 1 is that a wire-threading clamp 2 is provided on one of the connecting plates 101. The wire-threading clamp 2 is integrally formed with the wire-threading plate 102 at the longitudinal end of the connecting plate 101. The wire-threading clamp 2 has an inlet groove 21 and an outlet groove 22 along the longitudinal direction. The inlet groove 21 and the outlet groove 22 are located on both sides in the transverse direction, respectively. The inlet groove 21 is used for introducing the flexible connecting element, and the outlet groove 22 is used for leading out the flexible connecting element.

[0041] Reference Figure 4 The wire clamp 2 has a tensioning groove 23, which is perpendicular to the wire inlet groove 21 and the wire outlet groove 22 and is connected to the wire inlet groove 21 and the wire outlet groove 22. The tensioning groove 23 is threaded with a tensioning screw 3, and the end of the tensioning screw 3 extends into the wire inlet groove 21 and the wire outlet groove.

[0042] The implementation principle of Example 4 is as follows: During clinical operation, the flexible connecting element is introduced along the inlet groove 21, passes through the thread hole in sequence, and exits through the outlet groove 22. Then, the tightening screw 3 is tightened so that the end of the screw extends into the inlet groove 21 and the outlet groove 22 and presses against the flexible connecting element. The clamping force of the tightening screw 3 and the inner wall of the clamp on the flexible connecting element is used to achieve clamping and fixation, thus simplifying the fixing process of the flexible element. Moreover, the operator can freely adjust the length of the flexible connecting element by unscrewing the tightening screw 3, which improves the convenience of operation for the user.

[0043] Example 5 Reference Figure 5 The difference from embodiment 4 is that the end face of the wire clamp 2 near the connecting plate 101 is integrally formed with two limiting ribs 4. The two limiting ribs 4 are arranged on opposite sides in the lateral direction, and the limiting ribs 4 are arc-shaped with the center of the connecting plate 101 as the center. The end of the limiting ribs 4 away from the wire clamp 2 is fixed on the wire plate 102. The inner side wall of the limiting ribs 4 and the outer side wall of the connecting plate 101 form a limiting groove 5 that restricts the direction of the cable.

[0044] The implementation principle of Example 5 is as follows: The limiting groove 5 formed by the limiting rib plate 4 and the connecting plate 101 guides and limits the flexible connecting element, reducing the possibility of lateral displacement or entanglement of the flexible connecting element due to bone micro-movement, operation touch, etc., ensuring that the element is always threaded along the preset path, thereby avoiding the problem of clamping failure or uneven force due to deviation from the preset path during the threading process, and improving the stability of the flexible connection.

[0045] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A bone plate that can be threaded for flexible connection, characterized in that, The device includes a bone plate body (1), which includes a connecting plate (101) connected to the bone by bone screws. Two connecting plates (101) are arranged longitudinally. Each connecting plate (101) has a connecting hole (1011) for the bone screw to pass through. Multiple threading plates (102) are integrally formed on the outer periphery of the connecting plate (101). Each threading plate (102) has a threading hole.

2. The bone plate for flexible connection that can be threaded through, as described in claim 1, is characterized in that... The bone plate body (1) further includes an adjustment part (103), which connects the two connecting plates (101).

3. A bone plate that can be threaded for flexible connection according to claim 2, characterized in that The adjusting part (103) is a tie rod, which is rhomboid in shape and its two ends, which are opposite each other in the longitudinal direction, are respectively connected to the two connecting plates (101).

4. A bone plate for flexible connection that can be threaded through, as described in claim 3, is characterized in that... The number of adjustment parts (103) in the longitudinal direction is at least one, and multiple adjustment parts (103) are connected to each other. The adjustment parts (103) located at the beginning and end are respectively connected to the connecting plate (101).

5. A bone plate that can be threaded for flexible connection according to claim 1, wherein, The number of bone plate bodies (1) in the transverse direction is at least one, and two adjacent threading plates (102) in the transverse direction are connected to each other, and the two threading holes are interconnected.

6. A bone plate that can be threaded for flexible connection according to claim 1, characterized in that, One of the connecting plates (101) is provided with a wire threading clamp (2), which has an inlet groove (21), an outlet groove (22) and a tensioning groove (23). The inlet groove (21) and the outlet groove (22) are parallel to the longitudinal direction. The tensioning groove (23) is perpendicular to the inlet groove (21) and the outlet groove (22) and communicates with the inlet groove (21) and the outlet groove (22). The tensioning groove (23) is threaded with a tensioning screw (3), and the end of the tensioning screw (3) extends into the inlet groove (21) and the outlet groove (22).

7. A bone plate for flexible connection that can be threaded through, according to claim 6, wherein the threading clamp (2) is provided with limiting ribs (4) at opposite ends in the transverse direction, the end of the limiting rib (4) away from the threading clamp (2) is provided on the threading plate (102), and the inner side wall of the limiting rib (4) and the outer side wall of the connecting plate (101) form a limiting groove (5) that restricts the direction of the cable.

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