Reduction fixing device for lateral malleolus oblique fracture
By designing a reduction and fixation device for oblique fractures of the lateral malleolus, and utilizing a groove and slider structure as well as a Z-shaped guide, the problem of reduction of oblique fractures of the lateral malleolus was solved, achieving efficient reduction and fixation with one hand and simplifying the surgical procedure.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-11
- Publication Date
- 2026-03-10
AI Technical Summary
Existing techniques are difficult to effectively reduce oblique fractures of the lateral malleolus, especially due to the traction of ligaments and tendons at the lateral malleolus, which causes oblique fracture fragments to overlap and shift along the fracture line. Furthermore, traditional traction methods are difficult to achieve satisfactory results, require multiple people to work together, and are difficult to maintain after reduction.
A reduction and fixation device including a lateral ankle traction support frame and a lateral ankle traction adjustment rod was designed. Utilizing a sliding groove and slider structure, combined with a Z-shaped guide traction device and a guide, traction and reduction of the fracture ends are achieved. The fracture position can be conveniently adjusted by one hand, and Kirschner wires are inserted into the slots on the guide for fixation.
This method successfully reduced the oblique fracture of the lateral malleolus, reduced manpower requirements, improved operational efficiency, simplified subsequent fixation procedures, and prevented internal and external displacement of the fracture fragments.
Smart Images
Figure CN223979849U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a fracture reduction technical field, concretely is a kind of reduction fixing device for external malleolus oblique fracture. BACKGROUND
[0002] The lower end of fibula is relatively swollen, which is external malleolus, and its medial surface has a flat external malleolus articular surface, which participates in forming the ankle joint. External malleolus fracture is the most common type of ankle joint fracture. External malleolus fracture with obvious displacement usually needs to be fixed by surgery.
[0003] The main difficulty in external malleolus surgery is the reduction of external malleolus oblique fracture. Due to the traction of ligaments and tendons at the external malleolus, the oblique fracture block usually overlaps and shifts along the fracture line. During reduction, the distal bone block needs to be pulled to restore the length, and then anatomical reduction of the fracture is performed. Since the external malleolus block is usually small, the traction of the foot usually cannot achieve satisfactory traction effect, and the external malleolus is mainly composed of cancellous bone, so clamping traction may cause the distal bone block to be crushed. Therefore, a new type of external malleolus oblique fracture traction reduction device is urgently needed.
[0004] Therefore, as described above, there is an urgent need for a reduction fixing device for external malleolus oblique fracture, which is simple in structure, convenient to operate, can be maintained by one hand, saves manpower, effort and space, and can also traction and smoothly reduce external malleolus oblique fracture. UTILITY MODEL CONTENT
[0005] The utility model aims to solve the problems existing in the above-mentioned, and provides a reduction fixing device for external malleolus oblique fracture.
[0006] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of:
[0007] A reduction fixing device for external malleolus oblique fracture, comprising an external malleolus traction support frame and an external malleolus traction adjusting rod located on the external malleolus traction support frame. The two side surfaces of the external malleolus traction support frame are provided with grooves, and the grooves are provided with sliding grooves. The external malleolus traction adjusting rod is slidingly arranged on the sliding grooves. The external malleolus traction adjusting rod comprises a sliding block, an extension rod and a Z-shaped guide tractor. The sliding block is located in the sliding groove of the groove. One end of the extension rod is connected with the sliding block perpendicularly, and the other end extends to the outer end of the external malleolus traction support frame and is connected with the guide tractor perpendicularly.
[0008] The reduction fixing device for external malleolus oblique fracture provided by the utility model can also have the following technical features:
[0009] The external malleolus traction support frame is in the shape of an I-beam.
[0010] The reduction and fixation device for oblique fractures of the lateral malleolus provided by this utility model may also have the following technical features:
[0011] The slider, the extension rod, and the guide traction device are integrally formed.
[0012] The reduction and fixation device for oblique fractures of the lateral malleolus provided by this utility model may also have the following technical features: the lateral malleolus traction support frame is respectively arranged in the grooves at both ends of the lateral malleolus traction support frame, and is arranged in opposite symmetrical ways.
[0013] The reduction and fixation device for oblique fractures of the lateral malleolus provided by this utility model may also have the following technical features: the Z-shaped guide includes an integrally connected L-shaped traction rod and a guide, one end of the traction rod is fixedly connected to the extension rod, and the other end is fixedly connected to the guide.
[0014] The reduction and fixation device for oblique fractures of the lateral malleolus provided by this utility model may also have the following technical features: the guide includes a cylindrical end and a conical end, and a slot is provided on the cylindrical end and the conical end, the slot passing through the cylindrical end and the conical end from top to bottom.
[0015] The advantages of this utility model are:
[0016] 1. This utility model has a simple structure and is easy to operate. It adopts a flexible and movable external ankle traction adjustment rod, which can make it easier to reduce fractures that are difficult to reduce. It can also be maintained by one hand, which facilitates subsequent fixation and other operations.
[0017] 2. The lateral malleolus traction support frame of this utility model has a double-sided lateral malleolus traction adjustment rod, which can better fit the lateral malleolus bone surface and avoid misalignment and movement when clamped. In addition, the extension rod makes the lateral malleolus traction support frame and the lateral malleolus traction adjustment rod open, which makes it easier for the operator to operate. Then, Kirschner wires are inserted into the two ends of the fracture site through the slot on the guide to achieve temporary fixation. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the reduction and fixation device for oblique fractures of the lateral malleolus described in an embodiment of this utility model.
[0019] Figure 2 This is a top view of the reduction and fixation device for oblique fractures of the lateral malleolus described in an embodiment of this utility model.
[0020] Figure 3 This is an embodiment diagram of the reduction and fixation device for oblique fractures of the lateral malleolus described in this utility model. Detailed Implementation
[0021] The present invention will be further described below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the description of the present invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims.
[0022] The reference numerals and components involved in the accompanying drawings are shown below:
[0023] 1. Lateral ankle traction support frame;
[0024] 2. Lateral ankle traction adjustment rod; 21. Sliding block; 22. Extension rod;
[0025] 23. Guide traction device; 231. L-shaped traction rod;
[0026] 232, guide; 2321, cylindrical end; 2322, conical section; 2323, slot;
[0027] 3. Groove; 4. Slide groove.
[0028] Example
[0029] Please see Figures 1-3 As shown, this device primarily addresses the problems of existing bone-holding devices where the inner surface of the bone end cannot effectively conform to and fully contact the fracture site. Traction is typically limited to a parallel line to the body during traction, making reduction difficult. Furthermore, reduction requires multiple people and is challenging to maintain, affecting subsequent fixation procedures. This device addresses these issues by providing a reduction and fixation mechanism for oblique fractures of the lateral malleolus. It pulls the fracture ends together and uses a lateral malleolus traction adjustment rod to adjust the alignment of the fracture ends, thus achieving traction, reduction, or internal fixation of the lateral malleolus fracture. This saves manpower and improves efficiency, creating conditions for final treatment and fixation.
[0030] Based on this, the device includes a lateral ankle traction support frame 1 and a lateral ankle traction adjustment rod 2 located on the lateral ankle traction support frame; such as Figure 1 , Figure 2 As shown, the lateral ankle traction support frame 1 has an I-shaped structure. Grooves 3 are provided on both sides of the frame, and sliding grooves 4 are provided within these grooves 3, with the grooves 3 and sliding grooves 4 perpendicular to each other. Correspondingly, a lateral ankle traction adjustment rod 2 is provided on the sliding groove 4, and this rod slides along it. In use, the fractured lateral ankle can be moved by sliding the lateral ankle traction adjustment rod 2, thereby completing the traction operation on the fractured lateral ankle.
[0031] Specifically, the external ankle traction adjustment rod 2 includes a slider 21, an extension rod 22, and a Z-shaped guide traction device 23, and the slider 21, the extension rod 22, and the Z-shaped guide traction device 23 are integrally formed.
[0032] The slider 21 is placed vertically in the groove 4; one end of the extension rod 22 connected to the slider 21 is vertically connected to the slider 21, and the other end extends to the outer end of the lateral ankle traction support frame 1 and is also vertically connected to the guide traction device 23; the extension rod 22 makes the operation more convenient and allows the entire guide traction device 23 to be exposed under the operation, making it easier for the operator to insert Kirschner wires.
[0033] Correspondingly, the guide traction device 23 includes an integrally connected L-shaped traction rod 231 and guide 232, and one end of the traction rod 231 is fixedly connected to the extension rod 22, while the other end is fixedly connected to the guide 232.
[0034] Furthermore, the guide 232 includes a cylindrical end 2321 and a conical end 2322, and slots 2323 are provided on the cylindrical end 2321 and the conical end 2322, with the slots 2323 passing through the cylindrical end 2321 and the conical end 2322 sequentially from top to bottom. In use, Kirschner wires are inserted through the slots 2323 on the guide 232, so that the Kirschner wires are in close contact with the fractured lateral malleolus, thereby achieving traction on the fracture surface.
[0035] like Figure 3 As shown, in this embodiment, the lateral ankle traction adjustment rods 2 are respectively installed in the grooves 3 at both ends of the lateral ankle traction support frame 1, and are arranged in opposite directions and symmetrically. Specifically, the lateral ankle traction adjustment rods 2 on both sides facilitate manual traction by the surgeon. Correspondingly, during operation, the width of the lateral ankle traction support frame 1 is consistent with the width of the operator's palm, thus easily achieving traction operation. Its opposite symmetrical arrangement can better traction the fractured lateral ankle. Moreover, during traction, traction can be achieved simply by firmly gripping the L-shaped traction rod 231 on the lateral ankle traction adjustment rod 2 with one hand (all components are cylindrical structures, easy to grip, and improve grip comfort). At the same time, the bidirectional sliding groove on the lateral ankle traction support frame 1 and the bidirectional lateral ankle traction adjustment rods 2 can facilitate flexible adjustment of the traction angle (such as lateral traction or oblique traction), thereby making it easier to reduce fractures that are difficult to reduce.
[0036] The method of using this utility model is as follows: When in use, Kirschner wires are inserted into the fracture ends through the slots in the two guides on the bidirectional lateral malleolus traction adjustment rod. Then, the operator holds the L-shaped traction rod on the lateral malleolus traction adjustment rod and slowly moves it along the middle of the fracture bone. Under the action of the sliding groove and slider on the lateral malleolus traction support frame, the lateral malleolus traction adjustment rod can move bidirectionally until the fractured lateral malleolus is restored to its original position. After that, Kirschner wire fixation or direct fixation with a steel plate is performed.
[0037] It should be noted that this utility model has a simple structure and is easy to operate. The flexible and movable lateral malleolar traction adjustment rod can make it easier to reduce fractures that are difficult to reduce. It can also be maintained with one hand, which is convenient for subsequent fixation and other operations. At the same time, the setting of the lateral malleolar traction support frame with bilateral lateral malleolar traction adjustment rods can better fit the lateral malleolar bone surface and avoid misalignment during clamping. Furthermore, the setting of the extension rod allows for a slit between the lateral malleolar traction support frame and the lateral malleolar traction adjustment rod, which facilitates the operator's operation. Kirschner wires can then be inserted into both ends of the fracture site through the slots on the guide to provide temporary fixation.
[0038] The above description is only a preferred embodiment of the present utility model. It should be noted that those skilled in the art can make several improvements and additions without departing from the principle of the present utility model, and these improvements and additions should also be considered within the protection scope of the present utility model.
Claims
1. A reduction and fixation device for lateral malleolus oblique fracture, characterized in that, The application relates to an external malleolus traction support frame and an external malleolus traction adjusting rod arranged on the external malleolus traction support frame; recesses are arranged on the two side surfaces of the external malleolus traction support frame, sliding grooves are arranged in the recesses, and the external malleolus traction adjusting rod is arranged on the sliding grooves in a sliding mode. The external malleolus traction adjusting rod comprises a sliding block, an extension rod and a Z-shaped guide traction device; the sliding block is arranged in the sliding groove of the recess; one end of the extension rod is connected with the sliding block in a perpendicular mode, and the other end of the extension rod extends to the outer end of the external malleolus traction support frame and is connected with the guide traction device in a perpendicular mode.
2. The reduction and fixation device for lateral malleolus oblique fracture according to claim 1, characterized in that, The external malleolus traction support frame is in an I-shaped structure.
3. The reduction and fixation device for lateral malleolus oblique fracture according to claim 1, characterized in that, The sliding block, the extension rod and the guide traction device are integrally formed.
4. The reduction and fixation device for lateral malleolar fracture according to claim 1, wherein The external malleolus traction support frame is arranged in the recesses arranged at the two ends of the external malleolus traction support frame in a reverse symmetrical mode.
5. The reduction and fixation device for lateral malleolar fracture according to claim 1, wherein The Z-shaped guide device comprises an L-shaped traction rod and a guide device which are integrally connected; one end of the traction rod is fixedly connected with the extension rod, and the other end of the traction rod is fixedly connected with the guide device.
6. The reduction and fixation device for lateral malleolar fracture according to claim 5, characterized in that, The guide device comprises a cylindrical end and a pointed end; grooves are arranged on the cylindrical end and the pointed end and sequentially penetrate the cylindrical end and the pointed end from top to bottom.