Shearing fixing device for reduction of anterior arch fracture of atlas

Abstract

The utility model belongs to the technical field of medical instruments, and particularly relates to an atlas anterior arch fracture reduction fixing device capable of shearing, which comprises a reduction plate, a plurality of fixing holes are arranged on the reduction plate, a plurality of uniformly distributed steel rings are fixedly connected to two ends of the reduction plate, a sliding groove is arranged on the reduction plate, and the fixing holes are arranged in the sliding groove. The reduction plate is connected with the steel ring through a connecting block, the connecting block is connected with the reduction plate and the steel ring in a shearable mode, the reduction plate is of a shearable structure, and redundant parts can be sheared off according to a bony anatomical structure of an atlas in an operation so as to adjust the shape of the reduction plate. According to the atlas reduction plate, the reduction plate is of a cuttable structure, redundant parts can be accurately cut off according to a bony anatomical structure of an atlas in an operation, and then the shape can be flexibly adjusted, so that the reduction plate is tightly attached to the atlas. The fitness not only helps to improve the stability of fixation, but also can better adapt to individual differences of different patients, and provides more accurate support and fixation for fracture parts.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a shearable fixation device for reducing anterior arch fractures of the atlas. Background Technology

[0002] The atlas (C1), also known as the first cervical vertebra, connects to the occipital bone. It has a ring-shaped shape, lacks a vertebral body, and is composed of an anterior arch, a posterior arch, and lateral masses. The atlas possesses considerable flexibility and a wide range of motion. However, the junction between the lateral masses and the anterior and posterior arches is relatively thin, making it the weakest point of C1 and prone to fracture. A fracture of the anterior arch of the atlas significantly compromises spinal stability, often requiring surgical intervention.

[0003] In existing technologies, early reconstruction plates are not designed according to the anterior anatomical features of the atlas, making them difficult to fit; some plates only provide fixation and lack an intraoperative mechanism for immediate fracture reduction, making the operation difficult; and postoperative CT scans show that screws are close to the vertebral artery groove, which poses potential risks even without symptoms.

[0004] It should be noted that the above content falls within the inventor's technical knowledge and does not necessarily constitute prior art. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a shearable fixation device for reducing anterior arch fractures of the atlas, thus solving the current problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a shearable fixation device for reduction of anterior arch fracture of the atlas, comprising a reduction plate, wherein the reduction plate is provided with multiple fixation holes, and multiple evenly distributed steel rings are fixedly connected to both ends of the reduction plate. The reduction plate is provided with a sliding groove, and the reduction plate is connected to the steel rings through a connecting block. The connection between the connecting block and the reduction plate and the steel rings is a shearable connection.

[0007] As a preferred technical solution of this utility model, the repositioning plate is a cuttable structure, and the excess part can be cut off according to the bony anatomy of the atlas during the operation to adjust the shape and make it fit the atlas better.

[0008] As a preferred embodiment of this invention, the groove area serves as a temporary fixing point.

[0009] As a preferred technical solution of this utility model, the design of multiple fixation holes allows the surgeon to select a suitable nail entry point according to the specific situation during the operation, so as to effectively avoid the vertebral artery groove.

[0010] As a preferred technical solution of this utility model, the shape and size of the steel ring are adapted to the lateral mass of the atlas, and are used to assist in the positioning of the fixing device on the atlas.

[0011] As a preferred technical solution of this utility model, the connecting block can maintain the connection stability between the reset plate and the steel ring when it is not cut, and can be cut when it is necessary to adjust the shape of the device or adapt to a special anatomical structure.

[0012] As a preferred technical solution of this utility model, the reset plate and the steel ring are made of medical-grade metal materials, which have sufficient strength and biocompatibility.

[0013] Compared with the prior art, this utility model provides a shearable fixation device for reduction of anterior arch fracture of the atlas, which has the following beneficial effects:

[0014] 1. This is a shearable fixation device for reducing anterior arch fractures of the atlas. The reduction plate has a cuttable structure, which can precisely cut off the excess part according to the bony anatomy of the atlas during surgery, and then flexibly adjust its shape to fit the atlas closely. This fit not only helps to improve the stability of fixation, but also better adapts to the individual differences of different patients, providing more precise support and fixation for the fracture site;

[0015] 2. This shearable fixation device for reducing anterior arch fractures of the atlas uses a grooved area as a placement point for temporary fixation screws, effectively providing temporary fixation to the fracture site of the anterior arch of the atlas. By applying appropriate pressure to the temporary fixation screws, precise reduction of the fracture site can be achieved, promoting fracture healing. During the reduction process, the spinal canal of the atlas can be effectively expanded, reducing the pressure on the spinal cord and lowering the risk of spinal cord injury. Simultaneously, it preserves the normal range of motion of the cervical spine, minimizing the adverse effects of surgery on cervical function, and contributing to the patient's rapid postoperative recovery and improved quality of life. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the slide groove structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the fixing hole structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the connecting block structure of this utility model.

[0020] In the diagram: 1. Reset plate; 2. Fixing hole; 3. Steel ring; 4. Slide groove; 5. Connecting block. Detailed Implementation

[0021] 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.

[0022] refer to Figure 1 , Figure 3 and Figure 4 In this embodiment: a shearable fixation device for reduction of anterior arch fracture of atlas includes a reduction plate 1, the reduction plate 1 is provided with a plurality of fixation holes 2, a plurality of evenly distributed steel rings 3 are fixedly connected to both ends of the reduction plate 1, the reduction plate 1 is provided with a sliding groove 4, the reduction plate 1 is connected to the steel rings 3 through a connecting block 5, and the connection between the connecting block 5 and the reduction plate 1 and the steel rings 3 is a shearable connection.

[0023] Specifically, the reduction plate 1 is a cuttable structure that allows for precise cutting of excess material based on the bony anatomy of the atlas during surgery, enabling flexible adjustment of its shape to ensure a close fit to the atlas. This fit not only helps improve fixation stability but also better adapts to individual differences among patients, providing more precise support and fixation for the fracture site.

[0024] refer to Figure 1 and Figure 2 In this embodiment, the repositioning plate 1 is a cuttable structure, which can be cut off according to the bony anatomy of the atlas during the operation to adjust its shape and make it fit the atlas better. The groove 4 area serves as the placement point for temporary fixation nails. The design of multiple fixation holes 2 allows the surgeon to select the appropriate nail entry point according to the specific situation during the operation, so as to effectively avoid the vertebral artery groove.

[0025] Specifically, the design of multiple fixation holes 2 provides the surgeon with the flexibility to select the appropriate entry point according to the specific situation during the operation, effectively avoiding the vertebral artery groove, greatly reducing the risk of screw damage to the vertebral artery, reducing serious complications that may be caused by surgical operation, and improving the safety of the operation.

[0026] refer to Figure 1 and Figure 4 In this embodiment, the shape and size of the steel ring 3 are adapted to the lateral mass of the atlas, and are used to assist in fixing the position of the device on the atlas. The connecting block 5 can maintain the connection stability between the reset plate 1 and the steel ring 3 when it is not cut. It can be cut when it is necessary to adjust the shape of the device or adapt to special anatomical structures. The reset plate 1 and the steel ring 3 are made of medical-grade metal materials, which have sufficient strength and biocompatibility.

[0027] Specifically, the connecting block 5 ensures a stable and reliable connection between the reduction plate 1 and the steel ring 3 when it is not cut, but can be cut when the shape of the device needs to be adjusted or adapted to special anatomical structures. This design allows the device to provide stable support under normal circumstances and to be flexibly adjusted under special circumstances to meet diverse surgical needs. The reduction plate 1 and the steel ring 3 are made of medical-grade metal materials, which have sufficient strength to withstand physiological loads and ensure the effectiveness of the fixation device in the fracture healing process. At the same time, they have good biocompatibility, which can reduce adverse reactions to human tissues, reduce the probability of complications such as infection, and benefit the patient's physical recovery.

[0028] The working principle and usage procedure of this utility model are as follows: The fixation device of this utility model is removed. Based on the preoperative planning and the actual anatomical condition of the atlas observed during the operation, the shape of the reduction plate 1 is initially adjusted. If there are excess parts on the reduction plate 1 that affect fit, the doctor uses professional surgical scissors or other suitable cutting tools to cut off the excess parts along the predetermined cutting line. Then, the curvature of the porous connecting part is carefully adjusted manually or with the aid of specific instruments to make the reduction plate 1 fit as closely as possible to the surface contour of the anterior arch of the atlas, thus initially ensuring the compatibility between the fixation device and the atlas. The adjusted reduction plate 1 is placed above the fracture site of the anterior arch of the atlas, with the steel rings 3 at both ends corresponding to the two sides of the atlas. Since the shape and size of the steel ring 3 are adapted to the lateral mass of the atlas, the steel ring 3 can fit on the lateral mass relatively naturally at this time, playing a preliminary positioning and auxiliary fixation role, preventing the entire device from easily shifting in subsequent operations. The temporary fixation nail is accurately inserted into the area of ​​the groove 4 on the reduction plate 1. Through the contact between the temporary fixation nail and the fracture site, the fracture ends of the anterior arch of the atlas are initially stabilized and positioned, keeping them in a relatively appropriate position, creating conditions for subsequent precise reduction.

[0029] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the 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 this utility model should be included within the protection scope of this utility model.

Claims

1. A shearing device for atlantal anterior arch fracture reduction, comprising a reduction plate (1), characterized in that: The reset plate (1) is provided with multiple fixing holes (2), and multiple evenly distributed steel rings (3) are fixedly connected to both ends of the reset plate (1). The reset plate (1) is provided with a sliding groove (4). The reset plate (1) is connected to the steel rings (3) through a connecting block (5). The connection method between the connecting block (5) and the reset plate (1) and the steel rings (3) is a shearable connection.

2. An atlas anterior arch fracture reduction sheathable fixation device according to claim 1, wherein: The repositioning plate (1) is a cuttable structure. The excess part can be cut off according to the bony anatomy of the atlas during the operation to adjust the shape and make it fit the atlas better.

3. An atlas anterior arch fracture reduction sheathable fixation device according to claim 1, wherein: The groove (4) area serves as a temporary fixing point.

4. An atlas anterior arch fracture reduction sheathable fixation device according to claim 1, wherein: The design of multiple fixation holes (2) allows the surgeon to select the appropriate entry point based on the specific situation during the operation, so as to effectively avoid the vertebral artery groove.

5. An atlas anterior arch fracture reduction sheathable fixation device according to claim 1, wherein: The shape and size of the steel ring (3) are adapted to the lateral mass of the atlas and are used to assist in the positioning of the fixation device on the atlas.

6. An atlas anterior arch fracture reduction sheathable fixation device according to claim 1, wherein: The connecting block (5) can maintain the connection stability between the reset plate (1) and the steel ring (3) when it is not cut, but can be cut when it is necessary to adjust the shape of the device or adapt to a special anatomical structure.

7. An atlas anterior arch fracture reduction sheathable fixation device according to claim 1, wherein: The reset plate (1) and the steel ring (3) are made of medical-grade metal materials and have sufficient strength and biocompatibility.

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