Fibula unilateral external fixator

Abstract

The utility model relates to the field of external fixators, and discloses a fibula unilateral external fixator which comprises a threaded column, the upper end of the outer surface of the threaded column is sleeved with an upper nut in a threaded mode, the middle of the outer surface of the threaded column is sleeved with a clamping block in a threaded mode, and a clamping groove is formed in one side of the lower end face of the clamping block. The lower end of the outer surface of the threaded column is sleeved with a lower nut in a threaded mode. In the utility model, in a surgical operation, a steel plate is usually used for treating a fracture through a screw, and the steel plate is fixed on a skeleton through a screw to provide stable support and promote the healing of the fracture, but the screw steel plate needs to be disassembled after being used, and meanwhile, the screw steel plate possibly causes injury to a patient when being disassembled; when the fibula unilateral external fixator is used, external fixation is convenient, the broken end of the fibula can be reset through a small incision or closing, the outer surface of the threaded column is sleeved with the upper nut and the lower nut, and the positions of the clamping block and the clamping piece can be adjusted when the upper nut and the lower nut are rotated.

Description

Technical Field

[0001] This utility model relates to the field of external fixators, and in particular to a unilateral external fixator for the fibula. Background Technology

[0002] Surgical procedures are an important treatment method in the medical field. They involve cutting, suturing, repairing, and removing human tissues using surgical instruments to treat diseases, repair injuries, improve bodily functions, and save lives. Surgical procedures cover multiple specialties, including general surgery, cardiothoracic surgery, neurosurgery, orthopedics, urology, and obstetrics and gynecology. Orthopedic surgery is the surgical treatment of diseases or injuries of the musculoskeletal system, such as bones, muscles, ligaments, and joints. Its purpose is to repair damaged tissue structures, relieve pain, restore limb function, correct deformities, and prevent and treat related complications. Plate and screw placement is a common surgical technique, mainly used for the treatment of fractures.

[0003] When treating fractures with existing plate and screw fixation methods, doctors make an incision at the fracture site to insert the plate and screws. During plate placement, a plate suitable for the curvature of the injured segment is selected, and its length must at least include the injured segment and two spinous processes above and below it. Two plates are placed on either side of the spinous processes and temporarily fixed with instruments, but the holes in the plates must be kept symmetrical. Holes are drilled through the slots in the plates on both sides to insert appropriately sized screws, whose flat ends fit precisely into the slots in the plates. Nuts are then inserted and tightened, and the remaining screws and nuts are then inserted and tightened in sequence. This process is very cumbersome. Furthermore, removing the plates after recovery is also very difficult and can easily cause secondary injury to the patient during removal.

[0004] Therefore, those skilled in the art have provided a unilateral external fixator for the fibula to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a unilateral external fixator for the fibula. An upper nut and a lower nut are fitted onto the outer surface of the threaded post. Rotating the upper and lower threads allows adjustment of the positions of the locking block and clamping plate, making the external fixator more flexible than a steel plate with pins. The device allows for adjustment of the threaded pin position according to actual conditions. The locking block and clamping plate can rotate on the outer surface of the threaded post, enabling multi-angle and multi-directional adjustment based on the position of the threaded pin.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a unilateral external fixator for the fibula, comprising a threaded post, wherein an upper nut is threadedly fitted onto the upper end of the outer surface of the threaded post, and a snap-fit ​​block is threadedly fitted onto the middle of the outer surface of the threaded post;

[0007] A clamping groove is provided on one side of the lower end face of the snap-fit ​​block, a lower nut is threadedly fitted on the lower end of the outer surface of the threaded column, and a clamping piece is slidably disposed in the middle of the outer surface of the threaded column.

[0008] Furthermore, the thickness of the clip is set to 1.5 mm.

[0009] Furthermore, the snap-fit ​​block is movably positioned at the lower end of the upper nut.

[0010] Furthermore, the clamping piece is movably positioned at the upper end of the lower nut.

[0011] Furthermore, the clip is movably positioned at the lower end of the snap-fit ​​block.

[0012] Furthermore, the material used for the snap-fit ​​block is stainless steel.

[0013] Furthermore, the clamping piece is made of stainless steel.

[0014] This utility model has the following beneficial effects:

[0015] 1. This utility model proposes a unilateral external fixator for the fibula. In surgical procedures, steel plates and screws are commonly used to treat fractures. The steel plate is fixed to the bone with screws to provide stable support and promote fracture healing. However, the screws and plates need to be removed after use, which may cause injury to the patient. Screw dislodgement is a common late-stage complication, usually due to drilling into the spinous process, lack of a firm bony base above or below the spinous process, or insufficient tightening of the nuts. The unilateral external fixator for the fibula is convenient for external fixation, allowing for small incisions or closed reduction of the fibular fracture ends. The outer surface of the threaded post is fitted with an upper nut and a lower nut. Rotating the upper nut and lower thread allows adjustment of the position of the clamping block and clip, making the external fixator more flexible than steel plate and screw fixation. The device can be adjusted according to the actual situation during use.

[0016] 2. This utility model proposes a unilateral external fixator for the fibula. During use, the threaded post has an upper nut and a lower nut fitted on its outer surface. These nuts can be adjusted using a wrench, allowing them to move up and down. After movement, the locking block and clamping plate can move closer together, pressing and fixing the threaded half-needle. Simultaneously, the locking block and clamping plate can rotate on the outer surface of the threaded post, allowing for multi-angle and multi-directional adjustment based on the position of the threaded pin. After use, the locking block and clamping plate can be separated by rotating the upper and lower nuts, allowing the unilateral external fixator for the fibula to detach from the threaded half-needle. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main axial view of the present invention;

[0018] Figure 2 This is a bottom-view axial side view of the present invention;

[0019] Figure 3 This is a front view schematic diagram of the present invention;

[0020] Figure 4 This is a top-view axonometric schematic diagram of the present invention.

[0021] Legend:

[0022] 1. Threaded post; 2. Upper nut; 3. Clamping block; 4. Clamping plate; 5. Lower nut; 6. Clamping groove. Detailed Implementation

[0023] 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.

[0024] Reference Figure 1-4 An embodiment of this utility model is provided: a unilateral external fixator for the fibula, including a threaded post 1, an upper nut 2 threadedly fitted on the upper end of the outer surface of the threaded post 1, a snap-fit ​​block 3 threadedly fitted on the middle of the outer surface of the threaded post 1, a clamping groove 6 opened on one side of the lower end face of the snap-fit ​​block 3, a lower nut 5 threadedly fitted on the lower end of the outer surface of the threaded post 1, and a clip 4 slidably fitted on the middle of the outer surface of the threaded post 1.

[0025] Specifically, the main structure of the fibular unilateral external fixator includes a threaded post 1. Multiple fixing mechanisms are threaded onto the outer surface of the threaded post 1. These fixing mechanisms compress and fix the threaded half-needle during use. When the threaded half-needle is connected to the fibula, the fibular unilateral external fixator can secure it. The main structures of the fixing mechanisms include an upper nut 2 and a lower nut 5. The upper nut 2 and lower nut 5 can be rotated with a wrench, allowing the fixing mechanism to adjust its position on the threaded post 1 according to the patient's needs, thus better securing it to the threaded half-needle. A locking block 3 is fitted onto the outer surface of the threaded post 1, and a clip 4 slides on its outer surface. The locking block 3 and clip 4 move closer together when the upper nut 2 and lower nut 5 rotate. This allows the clip 4 to compress the threaded half-needle when the lower end of the locking block 3 is engaged with the groove 6, making the connection between the locking block 3 and the threaded half-needle more secure.

[0026] Reference Figure 3 , Figure 4 The thickness of the clamping piece 4 is set to 1.5 mm. The snap-fit ​​block 3 is movably set at the lower end of the upper nut 2. The clamping piece 4 is movably set at the upper end of the lower nut 5. The clamping piece 4 is movably set at the lower end of the snap-fit ​​block 3. The snap-fit ​​block 3 is made of stainless steel. The clamping piece 4 is made of stainless steel.

[0027] Specifically, the clamp 4 is made of stainless steel and has a thickness of 1.5 mm, so that the clamp 4 will not be too heavy when in use. The snap-fit ​​block 3 is located at the lower end of the upper nut 2. When the upper nut 2 is rotated downward, the snap-fit ​​block 3 can move downward. When the lower nut 5 is moved upward, it can drive the clamp 4 to move upward. After the upper nut 2 moves downward and the lower nut 5 rotates upward, the snap-fit ​​block 3 and the clamp 4 can fix the threaded half needle.

[0028] Working principle: In surgical procedures, plate placement is primarily used to treat fractures. During surgery, the surgeon fixes a plate to the fracture site and then secures it to the bone with screws to provide stable support and promote fracture healing. During plate placement, the surgeon makes an incision at the fracture site to insert the plate and screws. A plate suitable for the curvature of the injured segment is selected, and its length must at least include the injured segment and two spinous processes above and below it. Two plates are placed on either side of the spinous processes and temporarily fixed with instruments, ensuring that the plate channels are symmetrical. Drill holes in the spinous process through the slots in the steel plates on both sides, and place screws of appropriate length. The flat part of the screw should fit precisely into the slot in the steel plate. Place and tighten the nuts, and then place the remaining screws and nuts in sequence and tighten them one by one. After installation, suture the incision, rinse the incision with isotonic saline, remove tissue debris, achieve thorough hemostasis, suture layer by layer, and leave a negative pressure drainage tube. Screw dislodgement is a common postoperative complication. Due to the drilling of the spinous process, there is a lack of a firm bony base above or below the spinous process, which often causes the screws to fall out. Insufficient tightening of the nuts is also a cause of screw dislodgement after surgery.

[0029] When fixing the threaded half-needle with the fibular unilateral external fixator, multiple fixing mechanisms are provided on the outer surface of the threaded post 1. The fixing mechanisms can rotate at multiple angles on the outer surface of the threaded post 1, so that the fibular unilateral external fixator can better fix the threaded half-needle during use. The main structure of the fixing mechanism is the upper nut 2 and the lower nut 5. The upper nut 2 and the lower nut 5 can be rotated by a wrench. When the upper nut 2 and the lower nut 5 are rotated, the clamping block 3 and the clamping piece 4 can move closer to each other, so that when the clamping groove 6 opened at the lower end of the clamping block 3 clamps the threaded half-needle, the clamping piece 4 can squeeze the threaded half-needle, so that the clamping piece 4 and the clamping block 3 can firmly fix the threaded half-needle.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., 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 fibula unilaterial external fixator comprising a threaded column (1), characterized in that: The upper end of the outer surface of the threaded column (1) is threaded with an upper nut (2), and the middle part of the outer surface of the threaded column (1) is threaded with a snap-fit ​​block (3). The snap-fit ​​block (3) has a clamping groove (6) on one side of its lower end face, and a lower nut (5) is threaded onto the lower end of the outer surface of the threaded post (1). A clamping piece (4) is slidably disposed in the middle of the outer surface of the threaded post (1).

2. The fibula unilateral external fixator of claim 1, wherein: The thickness of the clip (4) is set to 1.5 mm.

3. The fibula unilaterial external fixator of claim 1, wherein: The snap-fit ​​block (3) is movably positioned at the lower end of the upper nut (2).

4. The fibula unilateral external fixator of claim 1, wherein: The clamping piece (4) is movably mounted on the upper end of the lower nut (5).

5. The fibula unilaterial external fixator of claim 1, wherein: The clip (4) is movably positioned at the lower end of the snap-fit ​​block (3).

6. The fibula unilaterial external fixator of claim 1, wherein: The material used for the snap-fit ​​block (3) is stainless steel.

7. The fibula unilaterial external fixator of claim 1, wherein: The clamp (4) is made of stainless steel.

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