Fibula locking bone assembly

Abstract

The application provides a fibula locking bone fracture assembly, and relates to the field of medical instruments. The fibula locking bone fracture assembly comprises a locking plate, a first looped titanium plate and a second looped titanium plate; the locking plate is provided with a locking groove, and the bottom wall of the locking groove is provided with a connecting hole; the first looped titanium plate and the second looped titanium plate are respectively arranged on the two sides of the locking plate, the first looped titanium plate is arranged in the locking groove, and the second looped titanium plate is arranged in a spaced mode with the locking plate; and the first looped titanium plate is connected with the second looped titanium plate through a suture wire penetrating through the connecting hole. The fibula locking bone fracture assembly provided by the application solves the technical problem that internal fixation is prone to breaking when treating lower tibiofibular syndesmosis injury in the prior art.

Description

Technical Field

[0001] This application relates to the field of medical devices, and more specifically, to a fibular locking bone assembly. Background Technology

[0002] The distal tibiofibular syndesmosis, formed by the fibular notch at the distal end of the tibia and the medial surface of the distal end of the fibula, is a slightly movable elastic joint. Under physiological conditions, it can move in accordance with ankle joint movements, exhibiting a complex pattern of rotation and translation. Distal tibiofibular syndesmosis injuries often occur alongside ankle fractures, but rarely alone. Surgical fixation is the primary treatment for distal tibiofibular syndesmosis injuries.

[0003] In the existing technology, the conventional method for treating distal tibiofibular syndesmosis injury is to use screws and bone plates for rigid fixation, that is, to use one or two distal tibiofibular syndesmosis screws for fixation; this fixation method has the problem that the screws are prone to breakage, which can lead to side effects, and that a second surgery is required to remove them. Utility Model Content

[0004] The purpose of this application is to provide a fibular locking bone graft component to alleviate the technical problem of internal fixation fracture that easily occurs when treating distal tibiofibular syndesmosis injuries in the prior art.

[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows:

[0006] The fibular locking bone-setting assembly provided by this utility model includes a locking plate, a first looped titanium plate, and a second looped titanium plate;

[0007] The locking plate has a locking groove, and the bottom wall of the locking groove is provided with a connecting hole;

[0008] The first looped titanium plate and the second looped titanium plate are respectively located on both sides of the locking plate, with the first looped titanium plate placed in the locking groove and the second looped titanium plate spaced apart from the locking plate;

[0009] The first looped titanium plate is connected to the second looped titanium plate by a stitch passing through the connection hole.

[0010] Furthermore, the first looped titanium plate is clearance-fitted with the locking groove.

[0011] Furthermore, the depth of the locking groove is less than or equal to the thickness of the first looped titanium plate.

[0012] Furthermore, the inner wall of the locking groove is configured as a first inclined surface, which gradually slopes away from the center of the locking groove from the side near the connecting hole to the side away from the connecting hole.

[0013] The outer wall of the first looped titanium plate is configured as a second inclined surface that matches the first inclined surface.

[0014] Furthermore, the inner wall of the locking groove is provided with a groove.

[0015] Furthermore, both the first looped titanium plate and the locking groove are elongated, and the inner wall of the locking groove extending along its length is provided with the groove.

[0016] The width of the groove is less than the width of the locking groove, and the length of the groove is less than the length of the locking groove.

[0017] Furthermore, let L1 be the sum of the width of the locking groove and the width of the recess, and L2 be the width of the locking plate at the position of the locking groove on the locking plate, where L1 ≤ 1 / 3 × L2.

[0018] Furthermore, the first looped titanium plate has arc-shaped protrusions at both ends;

[0019] The locking groove has corresponding arc-shaped grooves at both ends.

[0020] Furthermore, both the first looped titanium plate and the second looped titanium plate are provided with two wire-passing holes;

[0021] The two wire-passing holes located on the first looped titanium plate are spaced apart along the length direction of the first looped titanium plate, and both wire-passing holes are connected to the connecting hole;

[0022] The two wire-passing holes located on the second looped titanium plate are spaced apart along the length direction of the second looped titanium plate, and both wire-passing holes are connected to the connecting hole.

[0023] Furthermore, the two wire holes are connected by a connecting groove.

[0024] Based on the above technical solutions, the technical effects achievable by this utility model can be analyzed as follows:

[0025] The fibular locking bone-setting assembly provided by this utility model includes a locking plate, a first looped titanium plate, and a second looped titanium plate. The locking plate has a locking groove, and the bottom wall of the locking groove is provided with a connecting hole. The first looped titanium plate and the second looped titanium plate are respectively located on both sides of the locking plate, with the first looped titanium plate placed in the locking groove and the second looped titanium plate spaced apart from the locking plate. The first looped titanium plate is connected to the second looped titanium plate through a suture passing through the connecting hole. The locking plate is used to support the injured site; the locking groove is used to place the first looped titanium plate and to limit its position; the connecting hole is used for the suture to pass through; the first looped titanium plate and the second looped titanium plate are used in conjunction with the locking plate to elastically fix the injured site.

[0026] When using this fibular locking osteosynthesis assembly, the locking plate and the second looped titanium plate are placed on both sides of the tibia; the first looped titanium plate is placed in the locking groove of the locking plate, and the suture on the first looped titanium plate passes through the connecting hole and can pass through the second looped titanium plate on the opposite side of the tibia; the first looped titanium plate and the second looped titanium plate elastically fix the tibia and fibula, maintaining their micro-movement function, which is conducive to the recovery of ankle joint function, avoids loosening and breakage of lag screws and secondary surgery, and is easy to remove. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the structure of the fibular locking bone assembly provided in the embodiments of this application;

[0029] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0030] Figure 3 An exploded view of the fibular locking bone assembly provided in an embodiment of this application;

[0031] Figure 4 This is a schematic diagram of the locking plate in the fibular locking bone assembly provided in the embodiments of this application;

[0032] Figure 5 for Figure 4 A magnified view of a section at point B in the middle;

[0033] Figure 6 This is a partial structural diagram of the locking plate in the fibular locking bone graft assembly provided in an embodiment of this application;

[0034] Figure 7 This is a side view of the locking plate in the fibular locking bone assembly provided in an embodiment of this application.

[0035] icon:

[0036] 100 - Locking plate; 110 - Locking groove; 111 - Connecting hole; 112 - Groove; 113 - Arc-shaped groove;

[0037] 200 - First loop titanium plate; 210 - Arc-shaped protrusion; 220 - Through hole; 230 - Connecting groove. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0039] In the description of this application, it should be noted that the terms "inner" and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0040] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0041] The conventional method for treating distal tibiofibular syndesmosis injury in the current technology is to use screws and bone plates for rigid fixation. This fixation method has the problem that screws are prone to breakage, which can cause side effects, and requires a second surgery to remove them.

[0042] In view of this, see Figures 1 to 7 The second looped titanium plate is omitted in the figure. The fibular locking bone-setting assembly provided in this embodiment includes a locking plate 100, a first looped titanium plate 200, and a second looped titanium plate. The locking plate 100 has a locking groove 110, and the bottom wall of the locking groove 110 is provided with a connecting hole 111. The first looped titanium plate 200 and the second looped titanium plate are respectively located on both sides of the locking plate 100, and the first looped titanium plate 200 is placed in the locking groove 110, while the second looped titanium plate is spaced apart from the locking plate 100. The first looped titanium plate 200 is connected to the second looped titanium plate by a suture passing through the connecting hole 111.

[0043] Specifically, the locking plate 100 has a plate-like structure extending at both ends; see [link / reference] Figure 4 and Figure 7Along the length of the locking plate 100, the locking plate 100 is not linear; it is divided into a raised portion, a transition portion, and a main body portion. The two ends of the transition portion form an angle with the raised portion and the main body portion respectively, and are connected in an arc-shaped transition. The locking groove 110 is located at one end of the main body portion near the transition portion. The locking plate 100 has multiple circular locking holes and multiple figure-eight locking holes. The multiple circular locking holes are all located in the raised portion and the transition portion, and are all located on the same side of the locking groove 110, and are distributed according to the human body structure. The multiple figure-eight locking holes are all located in the main body portion, and are all located on the other side of the locking groove 110, and are spaced apart along the length of the locking plate 100. Along the width of the locking plate 100, the middle part of the locking plate 100 protrudes upwards. The stitching is multi-strand stitching, made by winding multiple strong and highly elastic non-absorbable threads. It is worth noting that the shape and structure of the first loop titanium plate 200 and the second loop titanium plate may be the same or different. The two can be elastically connected by stitches. The first loop titanium plate 200 can be placed in the locking groove 110, and the second loop titanium plate can be fitted to the damaged part.

[0044] The locking plate 100 is used to support the injured site; the locking groove 110 is used to place the first looped titanium plate 200 and to limit its position; the connecting hole 111 is used for sutures to pass through; the first looped titanium plate 200 and the second looped titanium plate are used in conjunction with the locking plate 100 to elastically fix the injured site. When using this fibular locking bone-setting assembly, the locking plate 100 and the second looped titanium plate are placed on both sides of the tibia; the first looped titanium plate 200 is placed in the locking groove 110 of the locking plate 100, and the sutures on the first looped titanium plate 200 can pass through the connecting hole 111 and then through the second looped titanium plate on the opposite side of the tibia; the first looped titanium plate 200 and the second looped titanium plate elastically fix the tibia and fibula, maintaining their micro-movement function to facilitate the recovery of ankle joint function, avoiding loosening or breakage of lag screws and secondary surgery, and the removal is easy.

[0045] The following is a detailed description of the shape and structure of the fibular locking osteotomy assembly:

[0046] In an optional embodiment of this utility model, the first looped titanium plate 200 and the locking groove 110 are in clearance fit.

[0047] Specifically, the clearance fit between the first loop titanium plate 200 and the locking groove 110 means that there is a certain amount of gap between them, which is used to compensate for errors. Furthermore, both the first loop titanium plate 200 and the locking groove 110 are elongated, and there are small gaps between them in both the length and width directions, which can be adjusted slightly. After adjustment, the position of the first loop titanium plate 200 relative to the locking groove 110 can be locked by stitching.

[0048] The first loop titanium plate 200 and the locking groove 110 are fitted together with a clearance so that they have a gap that can be used to compensate for errors.

[0049] In an optional embodiment of this utility model, the depth of the locking groove 110 is less than or equal to the thickness of the first looped titanium plate 200.

[0050] Specifically, in this embodiment, the depth of the locking groove 110 is equal to the thickness of the first looped titanium plate 200. That is, when the first looped titanium plate 200 is placed in the locking groove 110, the lower surface of the first looped titanium plate 200 is in contact with the bottom wall of the locking groove 110, and the upper surface is flush with the surface of the locking plate 100. If the thickness of the first looped titanium plate 200 is less than the depth of the locking groove 110, when the first looped titanium plate 200 is placed in the locking groove 110, the upper surface of the first looped titanium plate 200 is lower than the surface of the locking plate 100, which easily leads to low overall strength of the fibular locking bone assembly and makes the locking plate 100 prone to deformation. If the thickness of the first loop titanium plate 200 is greater than the depth of the locking groove 110, when the first loop titanium plate 200 is placed in the locking groove 110, the upper surface of the first loop titanium plate 200 protrudes from the surface of the locking plate 100, which can improve the overall strength of the fibular locking bone assembly. However, there is a problem that the part of the first loop titanium plate 200 protruding from the surface of the locking plate 100 rubs against the human body, resulting in reduced comfort.

[0051] The depth of the locking groove 110 is consistent with the thickness of the first loop titanium plate 200 to make the locking plate 100 strong and not easily deformed.

[0052] In an optional embodiment of this utility model, the inner wall of the locking groove 110 is configured as a first inclined surface, which gradually slopes away from the center of the locking groove 110 from the side near the connecting hole 111 to the side away from the connecting hole 111; the outer wall of the first loop titanium plate 200 is configured as a second inclined surface that matches the first inclined surface.

[0053] Specifically, the inner walls of the locking groove 110 are all set as first inclined surfaces, and the first inclined surfaces gradually slope outward from bottom to top; correspondingly, the first loop titanium plate 200 is placed in the locking groove 110, and the outer walls of the first loop titanium plate 200 are all set as second inclined surfaces, and the second inclined surfaces gradually slope outward from top to bottom.

[0054] The inner wall of the locking groove 110 is set as a first inclined surface, and the outer wall of the first loop titanium plate 200 is set as a second inclined surface. The first inclined surface and the second inclined surface fit together to play a guiding role.

[0055] In an optional embodiment of this utility model, the inner wall of the locking groove 110 is provided with a groove 112.

[0056] Specifically, the inner wall of the locking groove 110 is recessed outward to form a groove 112, and the groove 112 is connected to the locking groove 110.

[0057] The inner wall of the locking groove 110 is provided with a groove 112, which facilitates the placement and removal of the first looped titanium plate.

[0058] In an optional embodiment of this utility model, both the first looped titanium plate 200 and the locking groove 110 are elongated, and the inner wall of the locking groove 110 extending along its length direction is provided with a groove 112; the width of the groove 112 is less than the width of the locking groove 110, and the length of the groove 112 is less than the length of the locking groove 110.

[0059] Specifically, both the first loop titanium plate 200 and the second loop titanium plate are made of titanium alloy, while the locking plate 100 is made of pure titanium. In this embodiment, see [reference needed]. Figure 5 The distance between the first end of the groove 112 and the first end of the locking groove 110 is equal to the distance between the second end of the groove 112 and the second end of the locking groove 110; the first end of the groove 112 and the first end of the locking groove 110 are located on one side of the center of the locking groove 110, and the second end of the groove 112 and the second end of the locking groove 110 are located on the other side of the center of the locking groove 110.

[0060] The width of the groove 112 is less than the width of the locking groove 110, and the length of the groove 112 is less than the length of the locking groove 110, which ensures the strength of the locking plate 100 and prevents the locking plate 100 from twisting and deforming.

[0061] In an optional embodiment of this utility model, the sum of the width of the locking groove 110 and the width of the recess 112 is L1, and the width of the locking plate 100 at the position where the locking groove 110 is located is L2, where L1≤1 / 3×L2.

[0062] Specifically, the ratio of the sum of the widths of the locking groove 110 and the recess 112 to the width of the locking groove 110 at its position on the locking plate 100 is less than 1 / 3, to ensure the strength of the locking plate 100 and prevent deformation. Furthermore, two locking grooves 110 may be provided, spaced apart along the length of the locking plate 100; see [link to relevant documentation]. Figure 1 , Figure 3 and Figure 4The locking plate 100 at the location of the first locking groove 110 is wider, and the corresponding locking groove 110 is wider; the locking plate 100 at the location of the second locking groove 110 is narrower, and the corresponding locking groove 110 is narrower. Preferably, the sum of the width of the locking groove 110 and the width of the recess 112 is not greater than the width of other holes, such as the width of a figure-eight locking hole, ensuring that the cross-sectional area of ​​the locking plate 100 is not less than that of other locations, thereby ensuring that the fracture strength of the entire locking plate 100 is not reduced. More preferably, the sum of the width of the locking groove 110 and the width of the recess 112 is equal to the width of other holes, so that the strength of the locking plate 100 is not reduced and that the locking plate 100 is not easily deformed.

[0063] The dimensions of the locking groove 110 and the recess 112 are designed according to the formula L1≤1 / 3×L2 to ensure the strength of the locking plate 100.

[0064] In an optional embodiment of this utility model, the first loop titanium plate 200 has arc-shaped protrusions 210 at both ends; and the locking groove 110 has corresponding arc-shaped grooves 113 at both ends.

[0065] Specifically, the outer edge of the arc-shaped protrusion 210 is an outwardly concave arc shape, and the outer edge of the arc-shaped groove 113 matches the outer edge of the arc-shaped protrusion 210 so that the first loop titanium plate 200 can be placed in the locking groove 110.

[0066] The first loop titanium plate 200 has arc-shaped protrusions 210 at both ends to prevent the sharp ends of the first loop titanium plate 200 from causing accidental injury to the human body; and, compared to the first loop titanium plate 200 being rectangular, the first loop titanium plate 200 has a 90° sharp angle between its long side and short side, and the arc-shaped protrusions 210 prevent the first loop titanium plate 200 from having sharp corner bends, thus avoiding the problem of easy breakage at the sharp corners.

[0067] In an optional embodiment of this utility model, both the first looped titanium plate 200 and the second looped titanium plate are provided with two wire-passing holes 220; the two wire-passing holes 220 on the first looped titanium plate 200 are spaced apart along the length direction of the first looped titanium plate 200, and both wire-passing holes 220 are connected to the connecting hole 111; the two wire-passing holes 220 on the second looped titanium plate are spaced apart along the length direction of the second looped titanium plate, and both wire-passing holes 220 are connected to the connecting hole 111.

[0068] Specifically, in this embodiment, the first loop titanium plate 200 and the second loop titanium plate are identical in shape, size and structure, so that they can be used without distinction, avoiding the problem of complicated operation caused by the need to identify them before operation; and fundamentally solving the problem of usage error.

[0069] Two thread holes 220 are used to allow the suture to pass through, thereby enabling the first looped titanium plate 200 and the second looped titanium plate to be elastically connected by the suture.

[0070] In an optional embodiment of this utility model, the two wire holes 220 are connected by a connecting groove 230.

[0071] Specifically, in this embodiment, see Figure 2 The two wire holes 220 have different shapes; one wire hole 220 is circular, and the other wire hole 220 is pear-shaped.

[0072] The connecting groove 230 allows the suture to be embedded in the first loop titanium plate 200 and the second loop titanium plate, thus avoiding the problem of the suture protruding.

[0073] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0074] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A fibular locking bone graft assembly, characterized in that, include: Locking plate (100), first loop titanium plate (200), and second loop titanium plate; The locking plate (100) has a locking groove (110), and the bottom wall of the locking groove (110) is provided with a connecting hole (111); The first looped titanium plate (200) and the second looped titanium plate are located on both sides of the locking plate (100), and the first looped titanium plate (200) is placed in the locking groove (110), while the second looped titanium plate is spaced apart from the locking plate (100). The first looped titanium plate (200) is connected to the second looped titanium plate by a stitch passing through the connection hole (111).

2. The fibular locking bone assembly according to claim 1, characterized in that, The first looped titanium plate (200) is clearance-fitted with the locking groove (110).

3. The fibular locking bone assembly according to claim 2, characterized in that, The depth of the locking groove (110) is less than or equal to the thickness of the first looped titanium plate (200).

4. The fibular locking bone assembly according to claim 3, characterized in that, The inner wall of the locking groove (110) is configured as a first inclined surface, which gradually slopes away from the center of the locking groove (110) from the side near the connecting hole (111) to the side away from the connecting hole (111). The outer wall of the first looped titanium plate (200) is configured as a second slope that matches the first slope.

5. The fibular locking bone assembly according to any one of claims 1-4, characterized in that, The inner wall of the locking groove (110) is provided with a groove (112).

6. The fibular locking bone assembly according to claim 5, characterized in that, Both the first looped titanium plate (200) and the locking groove (110) are elongated, and the inner wall of the locking groove (110) extending along its length is provided with the groove (112); The width of the groove (112) is less than the width of the locking groove (110), and the length of the groove (112) is less than the length of the locking groove (110).

7. The fibular locking bone assembly according to claim 6, characterized in that, Let L1 be the sum of the width of the locking groove (110) and the width of the recess (112), and L2 be the width of the locking plate (100) at the position of the locking groove (110) on the locking plate (100), where L1 ≤ 1 / 3 × L2.

8. The fibular locking bone assembly according to claim 6, characterized in that, The first looped titanium plate (200) has arc-shaped protrusions (210) at both ends; The locking groove (110) has arc-shaped grooves (113) at both ends.

9. The fibular locking bone assembly according to claim 5, characterized in that, Both the first looped titanium plate (200) and the second looped titanium plate are provided with two wire-passing holes (220); The two wire-passing holes (220) located on the first looped titanium plate (200) are spaced apart along the length direction of the first looped titanium plate (200), and both wire-passing holes (220) are connected to the connecting hole (111); The two wire-passing holes (220) located on the second looped titanium plate are spaced apart along the length direction of the second looped titanium plate, and both wire-passing holes (220) are connected to the connecting hole (111).

10. The fibular locking bone assembly according to claim 9, characterized in that, The two wire holes (220) are connected by a connecting groove (230).

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