Arthroscopic tibial plateau fracture positioning and resetting tool

Abstract

The utility model relates to the technical field of medical instruments, in particular to a tibial plateau fracture positioning and resetting tool under an arthroscope, which comprises a positioning cross rod, a positioning adjusting handle and an ejector rod, a positioning crank arm is fixedly connected to the right end of the positioning cross rod, and an adjusting groove is formed in the upper end of the positioning crank arm. A plurality of first adjusting holes are formed in the front end of the positioning crank arm. According to the tibial plateau fracture positioning and resetting tool under the arthroscope, a traditional hook-shaped positioning end is arranged to be round, a kirschner wire can pass through the positioning hole in the center of the round positioning ring, accurate positioning can be provided, meanwhile, the kirschner wire is allowed to be inserted from multiple angles through the design, and the positioning and resetting effects are good. According to the kirschner wire fixing device, an operator can flexibly select the insertion angle of the kirschner wire according to the actual condition of an operation, the flexibility and adaptability of the operation are improved, the kirschner wire is reset through the top rod with the hole after being positioned, and a good reset effect can be achieved through reset under direct vision of an arthroscope.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a tool for arthroscopic localization and reduction of tibial plateau fractures. Background Technology

[0002] In daily life, ordinary people are prone to ligament sprains during strenuous activities. When making rapid movements that exceed the range of motion of the joint, the ligaments are easily torn or completely ruptured due to passive traction, often accompanied by sprains and fractures. After injury, timely diagnosis, treatment and resetting are necessary. The tibial plateau fracture locator is an essential surgical instrument for patients undergoing knee joint repair surgery.

[0003] Existing anterior and posterior cruciate ligament reconstruction positioning devices for tibial plateau fractures have hook-shaped positioning circles on the locators. These hooks are large and sharp, making them difficult to access due to the small joint space, thus affecting the progress of the surgery and making it difficult to position the Kirschner wires. Therefore, we have introduced a new arthroscopic tool for tibial plateau fracture positioning and reduction. Utility Model Content

[0004] The main purpose of this invention is to provide an arthroscopic tool for locating and reducing tibial plateau fractures, which can effectively solve the problems in the background art.

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

[0006] An arthroscopic tool for locating and reducing tibial plateau fractures includes a positioning crossbar and a positioning adjustment handle. A positioning curved arm is fixedly connected to the right end of the positioning crossbar. An adjustment groove is provided at the upper end of the positioning curved arm. Several No. 1 adjustment holes are provided at the front end of the positioning curved arm. A positioning circle is fixedly connected to the left end of the positioning crossbar. A positioning hole is provided at the upper end of the positioning circle. A through guide groove is provided at the upper part of the right end of the positioning adjustment handle. A positioning drill sleeve is inserted into the guide groove. Several No. 2 adjustment holes are provided at the front end of the positioning adjustment handle. An adjustment screw is inserted into the No. 2 adjustment hole below.

[0007] Preferably, the positioning crossbar, positioning curved arm, and positioning circle are an integral structure, and all three are made of metal.

[0008] By adopting the above technical solution, the traditional hook-shaped positioning circle is set to a circle. When the circular positioning circle contacts the Kirschner wire, it can provide an all-round contact interface. Compared with other shapes, the circle can make the Kirschner wire maintain a relatively stable position at all angles, reducing the shaking and offset of the Kirschner wire during the positioning process, thereby ensuring that the Kirschner wire can be inserted in the predetermined position and direction, and improving the positioning accuracy.

[0009] Preferably, the positioning adjustment handle is located inside the adjustment groove, and the positioning adjustment handle is made of metal.

[0010] By adopting the above technical solution, the adjustment of the positioning and adjusting handle can be facilitated.

[0011] Preferably, the rear of the positioning crank arm is provided with scale lines, and the adjustment groove is provided with anti-slip texture.

[0012] Preferably, the diameter of the positioning hole is 2mm.

[0013] By adopting the above technical solution, the positioning of Kirschner wires becomes easier.

[0014] Preferably, the adjusting screw passes through the corresponding first adjusting hole and is interlocked with the corresponding second adjusting hole.

[0015] By adopting the above technical solution, the angle of the positioning adjustment handle can be locked.

[0016] Preferably, the top rod is an all-metal structure and has a hollow interior.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. By inserting the forearm locator into the knee joint, its positioning circle contacts the tibial plateau. The positioning circle has a positioning hole to facilitate the positioning of the tibial guide wire. The tibial guide wire is a Kirschner wire with a diameter of 2mm or less. By changing the traditional hook-shaped positioning end to a circle, the circular positioning circle provides a 360-degree contact interface when it contacts the Kirschner wire. Compared with other shapes, the circle can keep the Kirschner wire in a relatively stable position at all angles, reducing the shaking and displacement of the Kirschner wire during the positioning process. This ensures that the Kirschner wire can be inserted in the predetermined position and direction, improving the positioning accuracy. The locator handle has a hollow design, which conforms to ergonomics and makes it easy and stable to hold. In addition, the top rod is made of all-metal material with a hollow internal structure, which facilitates the passage of Kirschner wire and facilitates repeated sterilization. At the same time, this design allows the Kirschner wire to be inserted from multiple angles, allowing the operator to flexibly choose the insertion angle of the Kirschner wire according to the actual situation of the surgery, improving the flexibility and adaptability of the operation. After the Kirschner wire is positioned, it is reduced through the perforated top rod. Reduction under direct arthroscopic vision can achieve a good reduction effect.

[0019] 2. By inserting the positioning adjustment handle into the adjustment slot and connecting the adjustment screw through the corresponding adjustment hole No. 1 and the corresponding adjustment hole No. 2, the angle of the positioning drill sleeve can be easily adjusted. Different patients have different ligament injuries and different surgical needs. The easily adjustable positioning drill sleeve can be adjusted according to the patient's injury site to ensure that the positioner can accurately adapt to various complex surgical situations. For different types of ligament surgeries, such as anterior cruciate ligament reconstruction and posterior cruciate ligament repair, the positioning drill sleeve can be adjusted to meet the specific requirements of different surgeries, thereby improving the pertinence and effectiveness of the surgery. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of an arthroscopic tibial plateau fracture localization and reduction tool according to the present invention;

[0021] Figure 2 This is a schematic diagram of the planar structure of an arthroscopic tibial plateau fracture localization and reduction tool according to the present invention;

[0022] Figure 3 This is a schematic diagram of the overall structure of the positioning crossbar of the arthroscopic tibial plateau fracture localization and reduction tool of this utility model;

[0023] Figure 4 This is a schematic diagram of the overall structure of the positioning adjustment handle of the arthroscopic tibial plateau fracture localization and reduction tool of this utility model.

[0024] In the diagram: 1. Positioning crossbar; 2. Positioning adjustment handle; 3. Positioning crank arm; 4. Adjustment groove; 5. No. 1 adjustment hole; 6. Positioning circle; 7. Positioning hole; 8. Guide groove; 9. Positioning drill sleeve; 10. No. 2 adjustment hole; 11. Adjusting screw; 12. Top bar. Detailed Implementation

[0025] 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.

[0026] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and 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 utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] Please see Figure 1-4 This utility model provides a technical solution:

[0029] An arthroscopic tool for locating and reducing tibial plateau fractures includes a positioning crossbar 1 and a positioning adjustment handle 2. A positioning curved arm 3 is fixedly connected to the right end of the positioning crossbar 1. An adjustment groove 4 is provided at the upper end of the positioning curved arm 3. Several first adjustment holes 5 are provided at the front end of the positioning curved arm 3. A positioning circle 6 is fixedly connected to the left end of the positioning crossbar 1. A positioning hole 7 is provided at the upper end of the positioning circle 6. A through guide groove 8 is provided at the upper part of the right end of the positioning adjustment handle 2. A positioning drill sleeve 9 is inserted inside the guide groove 8. Several second adjustment holes 10 are provided at the front end of the positioning adjustment handle 2. An adjustment screw 11 is inserted inside the second adjustment hole 10 at the bottom.

[0030] In this embodiment, the positioning crossbar 1, the positioning curved arm 3, and the positioning circle 6 are an integral structure, and the positioning crossbar 1, the positioning curved arm 3, and the positioning circle 6 are all made of metal. The positioning adjustment handle 2 is located inside the adjustment groove 4, and the positioning adjustment handle 2 is made of metal. The rear of the positioning curved arm 3 is provided with scale lines, and the adjustment groove 4 is provided with anti-slip texture.

[0031] The above solution involves setting a positioning circle 6 at the end of the positioning crossbar 1, with a positioning hole 7 of 2mm in diameter, to facilitate the positioning of the Kirschner wire. By making the traditional hook-shaped positioning end circular, the circular positioning circle 6 provides a 360-degree contact interface when it contacts the Kirschner wire. Compared to other shapes, the circular shape allows the Kirschner wire to maintain a relatively stable position at all angles, reducing the shaking and offset of the Kirschner wire during the positioning process. This ensures that the Kirschner wire can be inserted in the predetermined position and direction, improving the positioning accuracy.

[0032] In this embodiment, the diameter of the positioning hole 7 is 2mm, the adjusting screw 11 passes through the corresponding first adjusting hole 5 and is inserted and connected to the corresponding second adjusting hole 10, the top rod 12 is an all-metal structure, and the inside of the top rod 12 is a hollow structure.

[0033] The above scheme involves inserting the positioning adjustment handle 2 into the adjustment slot 4, and connecting the adjustment screw 11 through the corresponding first adjustment hole 5 and the corresponding second adjustment hole 10. This facilitates the adjustment of the angle of the positioning drill sleeve 9. Since different patients have varying ligament injuries and surgical needs, the positioning drill sleeve 9 can be adjusted to be customized according to the patient's injury site, ensuring that the positioner can accurately adapt to various complex surgical situations. For different types of ligament surgeries, such as anterior cruciate ligament reconstruction and posterior cruciate ligament repair, the specific requirements of different surgeries can be met by adjusting the positioning drill sleeve 9, thereby improving the targetedness and effectiveness of the surgery.

[0034] It should be noted that this utility model is an arthroscopic tool for locating and reducing tibial plateau fractures. During use, when the plateau collapses or forms a step, with a collapse exceeding 3mm or 4mm, surgical treatment to restore the anatomical structure of the articular surface and secure internal fixation is necessary. For displaced, unstable, or poorly aligned tibial plateau fractures with a step, open reduction and internal fixation or external fixation can be chosen. For some less severe Schatzker fractures, minimally invasive treatment can be performed under arthroscopic assistance using a tibial plateau locator. In specific use, the push rod 12 is used to press and support the fracture fragments during fracture reduction, helping the surgeon to place the fracture fragments... To restore the fracture to its normal anatomical position and promote healing, the mandrel 12 is made entirely of metal, capable of withstanding significant pressure. Its smooth surface prevents damage to surrounding tissues, and its hollow interior facilitates the passage of Kirschner wires and allows for repeated sterilization. By inserting the locator into the joint cavity and accurately positioning it at the fracture site, the mandrel 12, guided by the locator, applies pressure and support to the fracture fragments, enabling their reduction. Finally, after fracture reduction, arthroscopy is used to re-examine the reduction status, ensuring the fracture fragments have returned to their normal position. A positioning circle 6 is positioned at the end of the positioning crossbar 1, and the positioning circle 6 is chiseled... The 2mm diameter positioning hole 7 is specifically designed for precise Kirschner wire positioning, facilitating accurate operation during surgery. The positioning circle 6 features a rounded contour design, providing a 360-degree contact interface when in contact with the Kirschner wire. Compared to other shapes, the round shape allows the Kirschner wire to maintain a relatively stable position at all angles, reducing wobbling and offset during positioning. This ensures that the Kirschner wire is inserted in the predetermined position and direction, improving positioning accuracy. Furthermore, the locator handle has a hollow design, conforming to ergonomics for a lightweight and stable grip. This design also allows for insertion of the Kirschner wire from multiple angles, making the operation more precise. The surgeon can flexibly choose the insertion angle of the Kirschner wire according to the actual situation of the surgery, which improves the flexibility and adaptability of the operation. After the Kirschner wire is positioned, it is reduced by the perforated top rod 12. The reduction under direct arthroscopic vision can achieve a good reduction effect. In addition, by embedding the positioning adjustment handle 2 into the adjustment groove 4, and using the adjustment screw 11 to pass through the first adjustment hole 5 and the second adjustment hole 10 for precise docking, the angle of the positioning drill sleeve 9 can be flexibly adjusted. Taking into account the diversity of patient injury conditions and the individual differences in surgical needs, the doctor can flexibly adjust the angle of the positioning drill sleeve 9 according to the specific injury of the patient, ensuring that the positioner can accurately adapt to various complex surgical scenarios.

[0035] 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. An arthroscopic tool for locating and reducing tibial plateau fractures, comprising a positioning crossbar (1), a positioning adjustment handle (2), and a top rod (12), characterized in that: The right end of the positioning crossbar (1) is fixedly connected to a positioning crank arm (3). The upper end of the positioning crank arm (3) is provided with an adjustment groove (4). The front end of the positioning crank arm (3) is provided with several first adjustment holes (5). The left end of the positioning crossbar (1) is fixedly connected to a positioning circle (6). The upper end of the positioning circle (6) is provided with a positioning hole (7). The upper part of the right end of the positioning adjustment handle (2) is provided with a through guide groove (8). The inside of the guide groove (8) is connected to a positioning drill sleeve (9). The front end of the positioning adjustment handle (2) is provided with several second adjustment holes (10). The lower second adjustment hole (10) is connected to an adjustment screw (11).

2. The arthroscopic tibial plateau fracture localization and reduction tool according to claim 1, characterized in that: The positioning crossbar (1), positioning curved arm (3), and positioning circle (6) are an integral structure, and the positioning crossbar (1), positioning curved arm (3), and positioning circle (6) are all made of metal.

3. The arthroscopic tibial plateau fracture localization and reduction tool according to claim 1, characterized in that: The positioning adjustment handle (2) is located inside the adjustment groove (4), and the positioning adjustment handle (2) is made of metal.

4. The arthroscopic tibial plateau fracture localization and reduction tool according to claim 1, characterized in that: The rear of the positioning crank arm (3) is provided with scale lines, and the adjustment groove (4) is provided with anti-slip texture.

5. The arthroscopic tibial plateau fracture localization and reduction tool according to claim 1, characterized in that: The diameter of the positioning hole (7) is 2 mm.

6. The arthroscopic tibial plateau fracture localization and reduction tool according to claim 1, characterized in that: The adjusting screw (11) passes through the corresponding first adjusting hole (5) and is interlocked with the corresponding second adjusting hole (10).

7. The arthroscopic tibial plateau fracture localization and reduction tool according to claim 1, characterized in that: The top rod (12) is an all-metal structure, and the inside of the top rod (12) is a hollow structure.

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