Bone fracture plate for fixing posterior ankle fracture

Abstract

The utility model discloses a bone fracture plate for fixing posterior ankle fracture, and particularly relates to the technical field of bone fracture plates, the bone fracture plate comprises a bone fracture plate body, one side of the bone fracture plate body is provided with a plurality of moving holes, a plurality of fixing blocks are arranged in the moving holes, and the left side and the right side of the outer surface of each fixing block are fixedly provided with supporting plates. According to the bone fracture plate for fixing the posterior ankle fracture, in actual work, the fixing head is pressed towards the interior of the telescopic hole to extrude the spring so that the fixing block can be moved, when the fixing block moves to the fixing hole, the extruded spring can push the fixing head to reset, the fixing head can penetrate through the fixing hole so that the fixing block can be fixed, and the fracture of the posterior ankle fracture can be fixed. The positions of the fixing blocks can be adjusted within a certain range, so that the distance between the fixing blocks can be adjusted conveniently, and the situation that the number of screws on the bone fracture plate is reduced due to the fact that some positions in a posterior ankle skeleton are not suitable for screwing is effectively avoided.

Description

Technical Field

[0001] This utility model relates to the field of bone plate technology, and in particular to a bone plate for fixing posterior ankle fractures. Background Technology

[0002] Posterior malleolar fractures are a very important component of ankle fractures, accounting for a high proportion of all ankle fractures. They are frequently encountered in clinical practice and are often caused by the combined effects of high-energy vertical force and low-energy rotational shear force. The conventional treatment for posterior malleolar fractures is to use a bone plate for fixation, which ensures strength while achieving good fixation function.

[0003] A search revealed, for example, a utility model with publication number CN214761417U, which discloses a bone plate for fixing posterior malleolar fractures. The tibial fixation plate is a longitudinal strip, and the bent connecting plate is an oblique strip. The upper end of the bent connecting plate is connected to the lower end of one side of the tibial fixation plate, and there is an angle between the surface of the bent connecting plate and the surface of the tibial fixation plate. The spacing of the fixing screw holes in this utility model is relatively fixed. However, some locations in the posterior malleolar bone are not suitable for screws, which reduces the number of screws on the bone plate. This makes the bone plate prone to insecure fixation, affecting the healing of the posterior malleolar bone and thus prolonging the treatment period. Therefore, in order to solve the above defects, the inventors propose a bone plate for fixing posterior malleolar fractures. Utility Model Content

[0004] The main purpose of this invention is to provide a bone plate for fixing posterior ankle fractures, which can effectively solve the problem that the spacing of the fixing screw holes in existing bone plates is relatively fixed.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A bone plate for fixing a posterior ankle fracture includes a bone plate body. A plurality of movable holes are provided on one side of the bone plate body. A plurality of fixing blocks are provided inside the movable holes. Support plates are fixedly installed on both the left and right sides of the outer surface of the fixing blocks. Telescopic holes are provided in the middle of the side of the two support plates away from the fixing blocks. Springs are fixedly installed inside the two telescopic holes. Fixing heads are fixedly installed at the ends of the two springs near the openings of the telescopic holes.

[0007] Preferably, movable slots are provided on both the left and right sides of the movable hole, and multiple movable holes are provided on both the upper and lower sides of the two movable slots. A movable ball is movably connected inside the movable hole. Multiple fixed holes are provided on one side of the two movable slots, and the multiple fixed holes are arranged at equal intervals.

[0008] Preferably, the size of the fixing head is the same as the size of the fixing hole.

[0009] Preferably, the top surface of the fixing block is provided with an installation hole, and the installation hole is provided with an installation sleeve. Guide blocks are fixedly installed on both sides of the outer surface of the installation sleeve. A connecting hole is provided on one side of the outer surface of the installation sleeve, and a baffle is fixedly installed on the top surface of the installation sleeve.

[0010] Preferably, guide holes are provided on both sides of the mounting hole, and a fastening hole is provided in the middle of one side of the outer surface of the fixing block, and the size of the fastening hole is the same as the size of the connecting hole.

[0011] Preferably, the size of the baffle is larger than the size of the opening on the top surface of the mounting hole.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] This utility model discloses a bone plate for fixing posterior malleolar fractures. By setting a fixing block, in actual work, screws are inserted into the patient's posterior malleolar bone through the mounting sleeve to complete the fixation of the bone plate. Pressing the fixing head into the telescopic hole compresses the spring, which moves the fixing block. When the fixing block moves to the fixing hole, the compressed spring pushes the fixing head to return to its original position, allowing the fixing head to pass through the fixing hole and fix the fixing block. This allows the position of the fixing block to be adjusted within a certain range, thus facilitating the adjustment of the spacing between the fixing blocks. This effectively avoids the problem of the bone plate being unstable due to the number of screws on the bone plate being reduced because some positions in the posterior malleolar bone are not suitable for screw insertion. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a cross-sectional view of the support plate of this utility model;

[0016] Figure 3 This is a schematic diagram of the movable groove structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the mounting sleeve structure of this utility model;

[0018] Figure 5 This is a schematic diagram of the guide hole structure of this utility model.

[0019] In the diagram: 1. Bone plate body; 2. Moving hole; 3. Fixing block; 301. Support plate; 302. Telescopic hole; 303. Spring; 304. Fixing head; 101. Movable groove; 102. Fixing hole; 103. Movable hole; 104. Moving ball; 3011. Mounting hole; 3012. Guide hole; 3013. Mounting sleeve; 3014. Connecting hole; 3015. Guide block; 3016. Baffle; 3021. Fastening hole. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0021] This utility model discloses a bone plate for fixing posterior ankle fractures, such as... Figure 1-5 As shown, the bone plate body 1 is provided. Multiple moving holes 2 are provided on one side of the bone plate body 1. Multiple fixing blocks 3 are provided inside the moving holes 2. The fixing blocks 3 can move inside the moving holes 2, thereby adjusting the position of the fixing blocks 3 within a certain range. This is to avoid the problem of unstable fixation caused by reducing the number of screws on the bone plate when fixing the patient's posterior ankle because some positions in the posterior ankle bone are not suitable for screws.

[0022] Support plates 301 are fixedly installed on both the left and right sides of the outer surface of the fixed block 3. Each of the two support plates 301 has a telescopic hole 302 in the middle of the side away from the fixed block 3. A spring 303 is fixedly installed inside each of the two telescopic holes 302. A fixing head 304 is fixedly installed at one end of each spring 303 near the opening of the telescopic hole 302. When the fixing head 304 moves into the telescopic hole 302, it will compress the spring 303.

[0023] Movable grooves 101 are provided on both the left and right sides of the movable hole 2. Two support plates 301 are located inside the movable grooves 101, so that the fixed block 3 can move along the two movable grooves 101. Multiple movable holes 103 are provided on both the upper and lower sides of the two movable grooves 101. Movable balls 104 are movably connected inside the movable holes 103. The movable balls 104 can roll inside the movable holes 103. The support plates 301 are in contact with the movable balls 104 on the upper and lower sides of the movable groove. So when the fixed block 3 moves the support plates 301, the movable balls 104 will roll, thus making the movement of the fixed block 3 smoother.

[0024] Multiple fixing holes 102 are provided on one side of the interior of each of the two movable slots 101, and the multiple fixing holes 102 are arranged at equal intervals. When the fixing block 3 moves inside the movable slot 101, the fixing head 304 will move towards the interior of the telescopic hole 302 due to the influence of the inner wall of the movable slot 101, so that the fixing head 304 compresses the spring 303. When the fixing block 3 moves to the fixing hole 102, the compressed spring 303 will push the fixing head 304 to reset, so that the fixing head 304 can pass through the fixing hole 102 to fix the fixing block 3. The position of multiple fixing blocks 3 can be adjusted. The size of the fixing head 304 is the same as the size of the fixing hole 102.

[0025] The top surface of the fixing block 3 is provided with a mounting hole 3011, and the inside of the mounting hole 3011 is provided with a mounting sleeve 3013. After the position of the fixing block 3 is adjusted, the screw can be inserted into the patient's posterior ankle bone through the mounting sleeve 3013. By changing the mounting sleeve 3013 with different inner diameters, different sizes of screws can be changed according to the actual situation of the patient's posterior ankle bone.

[0026] Guide blocks 3015 are fixedly installed on both sides of the outer surface of the mounting sleeve 3013. A connection hole 3014 is opened on one side of the outer surface of the mounting sleeve 3013. A baffle 3016 is fixedly installed on the outer top surface of the mounting sleeve 3013. The user can pull the mounting sleeve 3013 out of the mounting hole 3011 by pulling the baffle 3016.

[0027] Guide holes 3012 are provided on both sides of the mounting hole 3011. When the mounting sleeve 3013 is inserted into the mounting hole 3011, the two guide blocks 3015 will be inserted into the two guide holes 3012. A fastening hole 3021 is provided in the middle of one side of the outer surface of the fixing block 3. The size of the fastening hole 3021 is the same as that of the connecting hole 3014. When the mounting sleeve 3013 is fully inserted into the mounting hole 3011, the fastening hole 3021 will coincide with the connecting hole 3014. Then, the bolt is inserted into the coincided fastening hole 3021 and connecting hole 3014 to fix the mounting sleeve 3013. This allows the mounting sleeve 3013 to be installed or replaced.

[0028] Since the size of the baffle 3016 is larger than the size of the opening on the top surface of the mounting hole 3011, when the mounting sleeve 3013 is inserted into the mounting hole 3011, the baffle 3016 will be located outside the mounting hole 3011, so that the mounting sleeve 3013 can be pulled out later.

[0029] The working principle of this utility model is as follows: Pressing the fixing head 304 into the telescopic hole 302 compresses the spring 303, thus moving the fixing block 3. When the fixing block 3 moves to the fixing hole 102, the compressed spring 303 pushes the fixing head 304 to reset, allowing the fixing head 304 to pass through the fixing hole 102 and fix the fixing block 3. The position of the fixing block 3 can be adjusted within a certain range. After the position of the fixing block 3 is adjusted, the fixing screw can be inserted through the mounting sleeve 3013 into the patient's posterior ankle. The device is installed inside the bone to fix the patient's posterior ankle. When different sizes of fixation screws are needed, the mounting sleeve 3013 is inserted into the mounting hole 3011, and the two guide blocks 3015 will then be inserted into the two guide holes 3012. The fastening hole 3021 will then coincide with the connecting hole 3014. After that, the bolt is inserted into the coincided fastening hole 3021 and connecting hole 3014 to fix the mounting sleeve 3013. This allows the mounting sleeve 3013 to be replaced so that mounting sleeves with different internal diameters can be used.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A bone plate for fixing a posterior malleolar fracture, comprising a bone plate body (1), characterized in that: The bone plate body (1) has multiple moving holes (2) on one side. Multiple fixing blocks (3) are provided inside the moving holes (2). Support plates (301) are fixedly installed on both the left and right sides of the outer surface of the fixing blocks (3). Telescopic holes (302) are provided in the middle of the side of the two support plates (301) away from the fixing blocks (3). Springs (303) are fixedly installed inside the two telescopic holes (302). Fixing heads (304) are fixedly installed at the end of the two springs (303) near the opening of the telescopic holes (302).

2. The bone plate for fixing a posterior malleolar fracture according to claim 1, characterized in that: The movable hole (2) has movable slots (101) on both the left and right sides inside. The movable slots (101) have multiple movable holes (103) on both the upper and lower sides inside. The movable holes (103) are movably connected to movable balls (104). The movable slots (101) have multiple fixed holes (102) on one side inside. The multiple fixed holes (102) are arranged at equal intervals.

3. The bone plate for fixing a posterior malleolar fracture according to claim 2, characterized in that: The size of the fixing head (304) is the same as the size of the fixing hole (102).

4. The bone plate for fixing a posterior malleolar fracture according to claim 1, characterized in that: The top surface of the fixing block (3) is provided with a mounting hole (3011), and the mounting hole (3011) is provided with a mounting sleeve (3013). Guide blocks (3015) are fixedly installed on both sides of the outer surface of the mounting sleeve (3013). A connecting hole (3014) is provided on one side of the outer surface of the mounting sleeve (3013). A baffle (3016) is fixedly installed on the top surface of the mounting sleeve (3013).

5. The bone plate for fixing a posterior malleolar fracture according to claim 4, characterized in that: Guide holes (3012) are provided on both sides of the mounting hole (3011), and a fastening hole (3021) is provided in the middle of one side of the outer surface of the fixing block (3), and the size of the fastening hole (3021) is the same as the size of the connecting hole (3014).

6. The bone plate for fixing a posterior malleolar fracture according to claim 4, characterized in that: The size of the baffle (3016) is larger than the size of the opening on the top surface of the mounting hole (3011).

Images