Distraction reduction fibula far-end bone fracture plate

Abstract

The utility model relates to the technical field of medical instruments, in particular to a distraction reduction fibula far-end bone fracture plate which comprises a head portion, a neck-trunk portion and a trunk portion which are integrally arranged, the width of the head portion is larger than that of the trunk portion, the head portion is provided with a plurality of locking holes arranged at intervals, the trunk portion is provided with a plurality of through holes arranged at intervals, and the through holes are communicated with the neck-trunk portion. The through hole is a combination hole formed by overlapping a threaded round hole and a non-threaded pressurizing hole groove part, the long axis X of the combination hole is arranged in the length direction of the stem part, and the pressurizing hole groove is arranged close to one side of the head part. The pressurizing hole groove in the combination hole is arranged close to one side of the head of the bone fracture plate, so that the pressurizing direction of the pressurizing hole groove is far away from the fracture end of the far end of the fibula, the stretching reduction of the fracture end is realized, and the treatment effect of the fracture of the far end of the fibula is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a distraction reduction distal fibular bone plate. Background Technology

[0002] In routine clinical practice, the management of distal fibular fractures presents a common challenge: the fracture site often exhibits shortening and displacement. Therefore, during surgical treatment, distraction reduction of the fracture site is necessary to ensure correct anatomical positioning, thereby promoting fracture healing and patient recovery.

[0003] However, the widely used distal fibular plates currently on the market are primarily designed based on compression fixation of the fracture ends. While this fixation method is effective for non-shortening fractures, it further exacerbates the shortening displacement common in distal fibular fractures, hindering proper reduction and stable fixation. This is particularly true for patients with osteoporosis; using existing fibular plates for compression fixation can more easily worsen the shortening displacement, increasing treatment difficulty and the risk of complications. For example, the distal fibular plates disclosed in publications CN206836954U and CN208114641U, when used with bone screws, all involve compression directed towards the distal fibular fracture end, causing the fibula to move towards the fracture end and resulting in further shortening displacement of the fracture site.

[0004] Therefore, given the shortcomings of existing distal fibular plates in addressing shortening and displacement of fracture ends, those skilled in the art urgently need to improve existing distal fibular plates to enhance the treatment outcomes of distal fibular fractures. Summary of the Invention

[0005] To address the aforementioned technical problems, this utility model provides a distraction-reduction distal fibular bone plate, which can distraction-reduction of the fracture site, achieving effective fracture reduction and fixation, and improving the treatment effect of distal fibular fractures.

[0006] The technical solution provided by this utility model is as follows:

[0007] A distraction reduction distal fibular bone plate includes: an integrally formed head, neck, and trunk, wherein the width of the head is greater than the width of the trunk, the head has a plurality of spaced locking holes, and the trunk has a plurality of spaced through holes, wherein the through holes are combined holes formed by overlapping threaded round holes and unthreaded pressure grooves, the major axis X of the combined holes is arranged along the length direction of the trunk, and the pressure grooves are located near the head.

[0008] The working principle of this distal fibular bone plate is as follows: by adjusting the position of the pressure groove and the threaded hole in the existing technology, the pressure direction of the pressure groove is directed away from the distal fibular fracture end. In this way, the bone plate can drive the fracture fragment to move away from the fracture end, thereby enabling the distal fibular bone plate to have a distraction separation function.

[0009] Preferably, the threaded circular hole is a tapered threaded hole with a taper of 0-30°.

[0010] Preferably, the locking hole is a round hole with a tapered thread.

[0011] Preferably, the head is also provided with several positioning holes.

[0012] Preferably, the number of positioning holes is 3-5.

[0013] Preferably, the tail of the cadre is also provided with the positioning hole.

[0014] Preferably, the tail of the cadre has one positioning hole.

[0015] Preferably, the neck is further provided with a locking and pressurizing elongated hole, which is formed by the overlapping of a non-threaded waist-shaped hole and a threaded hole. The long axis of the waist-shaped hole and the center of the threaded hole are located on the extension line of the center line of the neck length direction, and the waist-shaped hole is located on the side close to the head.

[0016] Preferably, the head and neck are twisted to one side.

[0017] The beneficial effects of this distal fibular bone plate are as follows: by swapping the positions of the pressure groove and the threaded circular hole in the existing technology, the pressure groove is positioned on the side closer to the head of the bone plate. This structural design ensures that the pressure direction of the pressure groove is away from the distal fibular fracture end, thereby achieving distraction reduction of the fracture end and effectively improving the treatment effect of distal fibular fractures. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the existing distal fibular bone plate.

[0019] Figure 2 This is a schematic diagram of the structure of the distal fibular bone plate of this utility model;

[0020] Figure 3 This is a diagram showing the usage state of the distal fibular bone plate of this utility model.

[0021] In the figure, 1 is the distal fibular bone plate, 10 is the shaft, 11 is the through hole, 12 is the threaded round hole, 13 is the pressure groove, 20 is the neck shaft, 21 is the locking pressure joint elongated hole, 22 is the waist-shaped hole, 23 is the threaded hole, 30 is the head, 31 is the locking hole, and 32 is the positioning hole. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the distal fibular bone plate of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings, so as to better understand the structure and working principle of this utility model. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit this utility model.

[0023] Existing distal fibular plates, such as Figure 1 As shown, the pressure groove in the connecting hole is located on the side of the bone plate away from the distal fibula, causing the pressure direction A to point towards the distal fibular fracture end. This results in compression of the fracture fragments at the fracture line, causing shortening and displacement of the fracture site. Therefore, this bone plate is not suitable for treating distal fibular fractures. The specific structure of the connecting hole in the bone plate is described in patent document CN100415182C.

[0024] like Figures 2-3 As shown, this embodiment provides a distraction reduction distal fibular bone plate 1, comprising an integrally formed head 30, neck 20, and shaft 10. The width of the head 30 is greater than the width of the shaft 10. The head 30 has multiple spaced locking holes 31, which are preferably circular holes with tapered threads. The number and distribution of the locking holes 31 can be adjusted according to actual needs. The shaft 10 has multiple spaced through holes 11. The through holes 11 are combined holes formed by the overlapping of threaded circular holes 12 and unthreaded pressure grooves 13. The long axis X of the combined holes is arranged along the length direction of the shaft 10, and the pressure grooves 13 are set on the side close to the head 30 of the distal fibular bone plate 1. This makes the pressure direction of the pressure grooves 13 away from the distal fibular fracture end, thereby achieving distraction reduction of the fracture end.

[0025] As a preferred option, the threaded round hole 12 is preferably a tapered threaded hole, the taper of which is adjustable between 0 and 30° to accommodate screws of different sizes and types.

[0026] As a preferred embodiment, the head 30 is also provided with 3-5 positioning holes 32, which are used to insert Kirschner wires. The number of positioning holes 32 is preferably 4.

[0027] As a preferred option, the tail of the cadre 10 is also provided with a positioning hole to position and fix the tail of the bone plate, ensuring the accuracy and stability of the bone plate position during the operation.

[0028] As a preferred embodiment, the neck 10 is provided with a locking and pressurizing elongated hole 21, which is formed by the overlapping of a threadless oblong hole 22 and a threaded hole 23. The long axis of the oblong hole 22 and the center of the threaded hole 23 are located on the extension line of the center line of the neck 10 along its length. The oblong hole 22 is located on the head 30 side near the distal fibular plate 1. This design provides greater flexibility and adaptability, allowing the screw position to be adjusted according to the specific fracture situation, thereby achieving more precise positioning and fixation.

[0029] As a preferred option, in order to better adapt to the anatomical structure of the distal fibula and improve the stability and fit of the bone plate, the head 30 and neck 20 are twisted to one side.

[0030] like Figure 3 As shown, during operation, the distal fibular bone plate 1 of this invention is placed at the distal fibular fracture site, and Kirschner wires are used for initial positioning of it relative to the fracture site. Next, locking screws are used to fix the head of the distal fibular bone plate 1 to the bone fragment on the distal side of the fibula. Subsequently, a bone screw is screwed into the waist-shaped hole 22 of the locking pressure-fitting hole 21 to pre-fix the neck of the bone plate 1 to the bone fragment on the proximal side of the fibula. Finally, a bone screw is screwed into the pressure groove 13 to completely fix the neck of the bone plate 1 to the bone fragment on the proximal side of the fibula. During this process, the pressure direction B of the distal fibular bone plate 1 is away from the fracture end. This pressure process causes the fracture fragment at the fracture line to be distracted and separated, achieving the effect of distraction reduction.

[0031] In summary, the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A distraction-reduction distal fibular bone plate, comprising: The head (30), neck (20) and body (10) are integrally formed. The width of the head (30) is greater than the width of the body (10). The head (30) has a plurality of spaced locking holes (31). The body (10) has a plurality of spaced through holes (11). The through holes are combined holes formed by overlapping threaded round holes and unthreaded pressure grooves. The major axis X of the combined holes is arranged along the length direction of the body. The pressure groove is provided on the side close to the head (30).

2. The distal fibular bone plate according to claim 1, characterized in that, The threaded round hole (12) is a tapered thread hole with a taper of 0-30°.

3. The distal fibular bone plate according to claim 1, characterized in that, The locking hole (31) is a round hole with a tapered thread.

4. The distal fibular bone plate according to claim 1, characterized in that, The head (30) is also provided with several positioning holes (32).

5. The distal fibular bone plate according to claim 4, characterized in that, The number of positioning holes (32) is 3-5.

6. The distal fibular bone plate according to claim 4, characterized in that, The tail of the cadre (10) is also provided with the positioning hole (32).

7. The distal fibular bone plate according to claim 6, characterized in that, The number of positioning holes (32) at the tail of the cadre (10) is 1.

8. The distal fibular bone plate according to any one of claims 1-7, characterized in that, The neck (20) is also provided with a locking and pressurizing elongated hole (21), which is formed by the overlapping of a non-threaded waist-shaped hole (22) and a threaded hole (23). The long axis of the waist-shaped hole (22) and the center of the threaded hole (23) are located on the extension line of the center line of the length direction of the neck (10), and the waist-shaped hole (22) is located on the side close to the head (30).

9. The distal fibular bone plate according to claim 8, characterized in that, The head (30) and the neck (20) are twisted to one side.

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