Tibial distal medial anatomical locking bone plate with integrated fixation function for medial malleolus

Abstract

The utility model relates to the technical field of orthopedic medical apparatus and discloses a tibial distal end medial anatomical locking bone plate with internal malleolus integrated fixing function, which comprises a main support plate body, an internal malleolus fixing module is fixedly connected to the distal end of the main support plate body and extends inward, five dynamic pressure holes and one long combined hole are arranged on the distal end of the main support plate body, eight universal locking holes and six micro suture holes are arranged on the surface of the internal malleolus fixing module. The tibial distal end medial anatomical locking bone plate with internal malleolus integrated fixing function meets the internal fixation selection of different types of internal malleolus fractures, even comminuted internal malleolus fractures, in addition, the six micro suture holes can be used for suture repair of ligaments, in the lower area of the Pilon fracture articular surface, two rows of a total of five 3.5mm dynamic pressure holes are designed, effective double-layer raft nail fixation can be provided from the medial side, and different plate length designs also meet the fixation requirements of tibial distal end shaft fractures.

Description

Technical Field

[0001] This utility model relates to the field of orthopedic medical device technology, specifically to an anatomical locking bone plate for the distal medial aspect of the tibia with integrated medial malleolus fixation function. Background Technology

[0002] Comminuted Pilon fractures of the distal tibia are a challenging condition to treat in trauma orthopedics. Traditional internal fixation methods often employ anterior or medial distal tibia plates. For varus injuries, medial distal tibia plates are preferred for medial support. However, due to the limitations of the medial distal tibia anatomical locking plate design, it cannot effectively fix medial malleolar fractures. For concomitant medial malleolar fractures, lag screws are often used for fixation. Furthermore, the medial distal tibia anatomical locking plate lacks a specific subarticular raft fixation design, making it unsuitable for comminuted Pilon fractures of the distal tibia with concomitant medial malleolar fractures.

[0003] Based on this, the present invention provides a distal medial anatomical locking bone plate with integrated medial malleolar fixation function. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a distal tibial medial anatomical locking bone plate with integrated medial malleolar fixation function, which has the advantage of integrated fixation for medial malleolar fracture combined with distal tibial comminuted Pilon fracture, and solves the problems mentioned in the background art.

[0005] This utility model provides the following technical solution: a distal medial anatomical locking bone plate with medial malleolus integrated fixation function, including a main support plate body, the distal end of the main support plate body extends medially and is fixedly connected to a medial malleolus fixation module, the distal end of the main support plate body is provided with five dynamic pressure holes and one elongated combination hole, and the surface of the medial malleolus fixation module is provided with eight universal locking holes and six micro suture holes.

[0006] Preferably, the contact surface of the medial malleolus fixation module is a three-dimensional anatomical curved surface with a radius of curvature R of 7.5-8.5 mm.

[0007] Preferably, the dynamic pressure hole is an elliptical hole with dimensions of 6.0 mm major axis × 3.5 mm minor axis.

[0008] Preferably, the elongated combination hole has a length of 10.2 mm, and the interior of the elongated combination hole is compatible with 4.5 mm cortical bone screws and 3.5 mm locking screws.

[0009] Preferably, the universal locking hole has a tapered threaded surface, and the universal locking hole allows for locking at multiple angles of 15°.

[0010] Preferably, the micro-suture hole is a 1.0mm through hole, and the edge of the micro-suture hole is rounded to R0.2mm.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] This distal tibial medial anatomical locking plate with integrated medial malleolar fixation features eight 2.7mm universal locking holes at the distal end, accommodating internal fixation options for different types of medial malleolar fractures, including comminuted medial malleolar fractures. In addition, there are six micro-suture holes for ligament repair. Two rows of five 3.5mm dynamic compression holes are designed in the subarticular region of the Pilon fracture, providing effective double-layer raft fixation from the medial side. Different plate lengths are also available to meet the fixation needs of cases with concurrent distal tibial shaft fractures. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the device of this utility model;

[0014] Figure 2 This is a schematic diagram illustrating the intended effect of using the bone plate of this utility model;

[0015] Figure 3 This is a side view of the screw position after the present invention has been used;

[0016] Figure 4 This is a schematic diagram of the back of the present invention after use.

[0017] In the diagram: 1. Main support plate; 2. Medial malleolus fixation module; 3. Dynamic pressure hole; 4. Long combination hole; 5. Universal locking hole; 6. Miniature suture hole. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] A pilon fracture is a fracture involving the distal articular surface of the tibia, the part of the lower leg bone near the ankle. A comminuted fracture in this area means the bone fragments are broken into three or more pieces, with the fracture line extending to the articular surface. This severely damages the normal structure and function of the joint and is usually caused by high-energy trauma, such as falls from heights, traffic accidents, or being struck by heavy objects. These powerful external forces act on the distal tibia, causing severe compression, twisting, or impact to the bone, thus leading to a comminuted fracture. For example, when falling from a height and landing on the ankle, the body weight and impact force are concentrated on the distal tibia, easily causing this type of fracture. Severe pain will occur at the injury site. This is because the fracture causes damage to the periosteum, surrounding muscles, ligaments and other tissues, which stimulates nerve endings. The fracture site and surrounding soft tissues will swell rapidly because the fracture causes local blood vessels to rupture and bleed, forming a hematoma. At the same time, tissue fluid exudation also increases. Due to the displacement of the fracture fragments, deformities may occur at the injured site, such as limb shortening, angulation or rotational deformities, which are significantly different from the normal limb shape. Patients cannot walk normally or perform activities such as flexion, extension and rotation of the ankle joint because the fracture disrupts the stability of the joint and the continuity of the bones, affecting the normal control of the joint by muscles and ligaments.

[0021] Most comminuted tibialis pilon fractures usually require surgical treatment. The purpose of surgery is to restore the smoothness of the distal tibia articular surface, rebuild fracture stability, and minimize complications. During surgery, doctors use internal fixation materials such as plates and screws to fix the fracture fragments, allowing the fracture to heal in the correct position. In some cases, such as when the patient's physical condition is poor and cannot tolerate surgery, or when the fracture displacement is not significant and the articular surface damage is minor, non-surgical treatment may be considered. Non-surgical treatment mainly includes manual reduction, plaster cast or brace fixation, but close monitoring of fracture healing and joint function recovery is necessary. The prognosis of comminuted tibialis pilon fractures is usually related to factors such as the severity of the fracture, the treatment method, and the rehabilitation process. Generally, because fractures in this location involve the articular surface, they are prone to complications such as traumatic arthritis, joint stiffness, and infection, affecting joint function recovery. This can lead to pain and limited mobility in daily activities such as walking and standing. Therefore, after fracture healing, patients usually need long-term rehabilitation training to restore joint function as much as possible and improve their quality of life.

[0022] Comminuted Pilon fractures of the distal tibia are a challenging condition to treat in trauma orthopedics. Traditional internal fixation methods often employ anterior or medial distal tibia plates. For varus injuries, medial distal tibia plates are preferred for medial support. However, due to the limitations of the medial distal tibia anatomical locking plate design, it cannot effectively fix medial malleolar fractures. For concomitant medial malleolar fractures, lag screws are often used for fixation. Furthermore, the medial distal tibia anatomical locking plate lacks a specific subarticular raft fixation design, making it unsuitable for comminuted Pilon fractures of the distal tibia with concomitant medial malleolar fractures.

[0023] Please see Figure 1-4 A medial distal tibial anatomical locking plate with integrated medial malleolar fixation function includes a main support plate 1. The distal end of the main support plate 1 extends medially and is fixedly connected to a medial malleolar fixation module 2. The distal end of the main support plate 1 is provided with five dynamic compression holes 3 and one elongated combination hole 4. The surface of the medial malleolar fixation module 2 is provided with eight universal locking holes 5 and six micro suture holes 6. The distal end includes eight 2.7mm universal locking holes 5 to meet the internal fixation selection for different types of medial malleolar fractures, even comminuted medial malleolar fractures. In addition, there are six micro suture holes 6 that can be used for ligament suture repair. In the subarticular region of the Pilon fracture, two rows of five 3.5mm dynamic compression holes 3 are designed to provide effective double-layer raft nail fixation from the medial side. Different plate length designs also meet the fixation needs of combined distal tibial shaft fractures.

[0024] Among them, the contact surface of the medial malleolus fixation module 2 is a three-dimensional anatomical curved surface with a radius of curvature R7.5-8.5mm, which matches the average data of distal tibial CT in Asian adults.

[0025] Among them, the dynamic pressure hole 3 is an elliptical hole with dimensions of 6.0mm major axis × 3.5mm minor axis.

[0026] The elongated combination hole 4 has a length of 10.2 mm and is compatible with 4.5 mm cortical bone screws and 3.5 mm locking screws.

[0027] Among them, the universal locking hole 5 has a tapered thread surface, and the universal locking hole 5 allows for locking at multiple angles of 15°.

[0028] Among them, the micro-suture hole 6 is a 1.0mm through hole, and the edge of the micro-suture hole 6 is rounded to R0.2mm.

[0029] The procedure includes eight 2.7mm universal locking holes 5 at the distal end to accommodate different types of medial malleolar fractures, including comminuted medial malleolar fractures. In addition, there are six micro-suture holes 6 for ligament repair. In the subarticular region of the Pilon fracture, two rows of five 3.5mm dynamic compression holes 3 are designed to provide effective double-layer raft nail fixation from the medial side. Different plate lengths are also available to meet the fixation needs of fractures involving the distal tibial shaft.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A distal tibial medial anatomical locking plate with integrated medial malleolar fixation function, characterized in that, It includes a main support plate (1), and the distal end of the main support plate (1) extends inward and is fixedly connected to an internal ankle fixation module (2). The distal end of the main support plate (1) is provided with five dynamic pressure holes (3) and one elongated combination hole (4). The surface of the internal ankle fixation module (2) is provided with eight universal locking holes (5) and six micro suture holes (6).

2. The distal medial tibial anatomical locking plate with integrated medial malleolar fixation function according to claim 1, characterized in that: The fitting surface of the medial malleolus fixation module (2) is a three-dimensional anatomical curved surface with a radius of curvature R7.5-8.5mm.

3. The distal medial tibial anatomical locking plate with integrated medial malleolar fixation function according to claim 1, characterized in that: The dynamic pressure hole (3) is an elliptical hole, and the dimensions of the dynamic pressure hole (3) are 6.0 mm for the major axis and 3.5 mm for the minor axis.

4. The distal medial tibial anatomical locking plate with integrated medial malleolar fixation function according to claim 1, characterized in that: The elongated combination hole (4) is 10.2 mm long and its interior is compatible with 4.5 mm cortical bone screws and 3.5 mm locking screws.

5. The distal medial tibial anatomical locking plate with integrated medial malleolar fixation function according to claim 1, characterized in that: The universal locking hole (5) has a tapered threaded surface.

6. The distal medial tibial anatomical locking plate with integrated medial malleolar fixation function according to claim 1, characterized in that: The micro-suture hole (6) is a 1.0mm through hole, and the edge of the micro-suture hole (6) is rounded to R0.2mm.

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