Novel osteotomy fixator

Abstract

According to the novel osteotomy fixator, a plurality of through holes and positioning holes are formed in a connecting plate and are accurately matched with connecting holes in a supporting plate, so that a multi-point fixing system is formed, and it is ensured that the supporting plate and the connecting plate are stressed in a balanced and stable mode in any direction. In addition, mounting rings are arranged at the two ends of the supporting plate, and a third screw is arranged in each mounting ring to serve as an auxiliary fixing point. By means of the design, the fixing strength is improved, concentrated pressure generated by the device on the sclerotin is further dispersed, stress is more uniform, and therefore the risk of sclerotin injury is effectively reduced. The mechanical stability of the device is greatly improved through combination of the mounting ring and the multiple screws, and displacement or looseness caused by external force or movement of the patient is prevented.

Description

Technical Field

[0001] This utility model belongs to the field of osteotomy fixation devices, specifically, it relates to a novel osteotomy fixation device. Background Technology

[0002] Knee varus deformity is a common bony deformity characterized by the inability to bring the legs together, sometimes with a significant gap between them. Knee varus deformity disrupts the normal force distribution of the knee joint, increasing the biomechanical stress on one side of the joint while relatively reducing it on the other. This leg deformity not only affects physique and aesthetics, but over time it can also cause knee pain during walking, impair joint mobility, and ultimately increase the risk of osteoarthritis of the knee.

[0003] For this type of leg deformity, osteotomy with internal fixation can be used for reconstructive treatment. This mainly involves a high tibial osteotomy, inserting a plate into the medial aspect of the osteotomy site, and then fixing the plate to the two adjacent osteotomies with screws. While this surgical method has achieved good clinical results, it also has some drawbacks: 1. The plate only serves to connect the two osteotomies and cannot provide adequate support at the osteotomy site; the large gap between the two osteotomies can affect the evenness of force distribution. 2. To enhance the connection, the plate needs to be connected to the two osteotomies with multiple screws; therefore, the plate length usually needs to be over 10cm, resulting in a larger area of ​​soft tissue dissection during surgery and greater trauma to the patient.

[0004] In view of this, this utility model is hereby proposed. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a new type of osteotomy fixation device, which solves the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0007] A novel osteotomy fixation device includes: a support plate and a connecting plate. Multiple through holes are formed on opposite sides of the connecting plate, and a first screw is inserted into each through hole for connection with the bone during use. A positioning hole is formed between every two through holes. A connecting hole corresponding to the position of the positioning hole is formed on one side of the support plate, and a second screw is inserted into the positioning hole and located within the connecting hole. Mounting rings are connected to both ends of the support plate, and third screws are inserted into the mounting rings.

[0008] Optionally, the support plate has a V-shaped top view and a wedge-shaped side view, and the wedge-shaped end of the support plate is used to insert into the opening of the osteotomy gap.

[0009] Optionally, the support plate is made of peek material or absorbable material.

[0010] Optionally, the angle of the V-shaped opening of the support plate ranges from 10° to 30°.

[0011] Optionally, the cross section of the connecting plate is T-shaped, and the length of the connecting plate is 2.5-5 cm.

[0012] After the above technical solution, the utility model has the following beneficial effects compared with the prior art, of course, any product implementing the utility model does not necessarily need to achieve all the advantages described below:

[0013] By setting multiple through holes and positioning holes on the connecting plate and accurately matching the connecting holes on the support plate, a multi-point fixing system is formed to ensure that the stress of the support plate and the connecting plate is balanced and stable in any direction. In addition, the two ends of the support plate are provided with mounting rings, and each mounting ring is internally provided with a third screw as an auxiliary fixing point. This design not only increases the fixing strength, but also further disperses the concentrated pressure generated by the device on the bone, making the stress more uniform, thereby effectively reducing the risk of bone damage. The combination of the mounting ring and the multiple screws greatly improves the mechanical stability of the device, preventing displacement or loosening caused by external force or patient activity.

[0014] The specific embodiments of the utility model will be described in further detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0015] The drawings in the following description are only some embodiments, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings. In the drawings:

[0016] Figure 1 It is one of the schematic diagrams of the three-dimensional structure of the bone cutting fixator;

[0017] Figure 2 It is the second schematic diagram of the three-dimensional structure of the bone cutting fixator;

[0018] Figure 3 It is Figure 1 It is the schematic diagram of structure A in the middle.

[0019] In the drawings, the component list represented by each number is as follows:

[0020] 1, support plate; 2, connecting plate; 3, first screw; 4, positioning hole; 5, connecting hole; 6, second screw; 7, mounting ring; 8, third screw. It should be noted that these drawings and textual descriptions are not intended to limit the scope of the concept of the utility model in any way, but to illustrate the concept of the utility model to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0021] The utility model will be explained in further detail in combination with the drawings.

[0022] Please refer to Figures 1-3 As shown in the figure, in the embodiment, a new type of osteotomy fixator is provided, which comprises a support plate 1 and a connecting plate 2. A plurality of through holes are formed through opposite sides of the connecting plate 2. First screws 3 are inserted into the through holes. A plurality of through holes are formed on the surface of the connecting plate 2. First screws 3 are inserted into the through holes. In use, the first screws 3 are used to connect the connecting plate 2 and the bone. A positioning hole 4 is formed between every two through holes. A connecting hole 5 corresponding to the positioning hole 4 is formed through one side of the support plate 1. A second screw 6 is inserted into the positioning hole 4 and located in the connecting hole 5. A mounting ring 7 is connected to each end of the support plate 1. A third screw 8 is inserted into the mounting ring 7. A connecting hole 5 corresponding to the positioning hole 4 of the connecting plate 2 is formed through one side of the support plate 1. A second screw 6 is inserted into the positioning hole 4. The second screw 6 is used to stably connect the support plate 1 and the connecting plate 2. The double screw connection structure significantly improves the stability and tolerance of the fixator.

[0023] The mounting ring 7 is connected to each end of the support plate 1. The third screw 8 is inserted into the mounting ring 7. The third screw 8 provides an additional fixing point for the support plate 1, further improving the stability of the device. The multi-screw combination structure effectively disperses external forces, ensuring that the device remains stable under various stress conditions.

[0024] More specifically, since the support plate 1 is fitted with the two sections of the osteotomy, the support plate 1 can provide good support for the osteotomy, and the point of action of the support force is at the maximum opening of the osteotomy, which can ensure good support effect and avoid angle loss, and can also ensure the uniformity of the stress.

[0025] Since the support plate 1 mainly plays a supporting role, and the connecting plate 2 mainly plays a fixing role, in the case of good support of the support plate 1, the two ends of the connecting plate 2 can be connected to the bone through one screw respectively, therefore, the length of the connecting plate 2 can be greatly shortened, usually not more than 5 cm. Compared with the traditional steel plate which is more than 10 cm long, the range of soft tissue dissection during the operation is greatly reduced, and the damage to the patient is greatly reduced. Not only can the operation process be accelerated, but also the patient's pain can be reduced.

[0026] The support plate 1 is made of peek material or absorbable magnesium alloy material, which has good tissue compatibility and no rejection reaction. It does not need to be taken out from the patient's body in the later stage, and has the characteristics of light weight and high strength, which can enhance the stability of the bone.

[0027] The support plate 1 of the embodiment has a V-shaped top view and a wedge-shaped side view, and the wedge-shaped end of the support plate 1 is used to be inserted into the opening of the osteotomy gap.

[0028] The support plate 1 of the embodiment is made of peek material or absorbable material. The support plate 1 is made of peek material or other absorbable magnesium alloy material, which has good tissue compatibility and no rejection reaction, and does not need to be taken out from the patient's body in the later stage. In addition, the support plate 1 has the characteristics of light weight and high strength, which can enhance the stability of the bone.

[0029] The angle of the V-shaped opening of the support plate 1 is designed to be 10° to 30°. The angle of the V-shaped opening of the support plate 1 is designed to be 10° to 30°. Such angle design can adapt to the bone characteristics of different patients. Through X-ray film or three-dimensional CT data analysis before operation, the doctor can choose the most suitable angle and size of the support plate 1, so as to ensure that the support plate 1 can perfectly fit the osteotomy gap and improve the postoperative effect.

[0030] The cross section of the connecting plate 2 is T-shaped, and the length of the connecting plate 2 is 2.5-5cm. The cross section of the connecting plate 2 is T-shaped, which is conducive to enhancing the stable contact with the bone. A plurality of through holes are provided on the opposite sides of the connecting plate 2, and a first screw 3 is inserted into each through hole. These first screws 3 are used to fix the connecting plate 2 and the bone, so as to ensure the stability of the connecting plate 2 and the bone. At the same time, the length of the connecting plate 2 is designed to be 2.5-5cm, which is shorter than the traditional length, which helps to reduce the range of soft tissue stripping during operation, thereby reducing the difficulty and pain of postoperative recovery of the patient.

[0031] During the operation, the wedge-shaped end of the support plate 1 is inserted into the opening of the osteotomy gap. Because the top view of the support plate 1 is V-shaped and the side view is wedge-shaped, the design makes the support plate 1 form a close fit between the two sections of the osteotomy, providing strong support. The main function of the support plate 1 is to provide support for the osteotomy site to prevent deformation due to uneven stress.

[0032] Before the operation, the bone force line information of the patient is obtained through X-ray film and three-dimensional CT data, and the personalized size suitable for the patient is selected according to the data, and the 3D printing technology is used to customize the exclusive support plate 1 and connecting plate 2. In addition, the doctor can also choose to pre-manufacture a variety of specifications of the support plate 1 and the connecting plate 2, and quickly select the appropriate model during the operation according to the actual situation of the patient. Such flexibility ensures the best fit of the device with the patient's bone.

[0033] During the operation, the wedge-shaped end of the support plate 1 is inserted into the osteotomy gap, and tightly fits with the two sections. The wedge-shaped design of the support plate 1 can adapt to different opening of the osteotomy, and at the same time, forms a strong support at the maximum opening, thereby dispersing the pressure and maintaining the stability of the osteotomy site. This design can effectively prevent the deformation of the bone due to uneven stress.

[0034] The connecting plate 2 is placed outside the bone, and is aligned with the support plate 1. The multiple through holes on the connecting plate 2 correspond to the connecting holes 5 on the support plate 1, and the preliminary fixation is achieved by passing the first screw 3 through the through hole and fixing it to the bone. This multi-hole structure can ensure the stability between the connecting plate 2 and the bone, and at the same time, provides additional support for the support plate 1.

[0035] In order to enhance the fixing effect between the support plate 1 and the connecting plate 2, the connecting plate 2 is provided with a positioning hole 4 between every two through holes. After the second screw 6 is inserted into the positioning hole 4 and passes through the connecting hole 5 on the support plate 1, the connection strength of the two can be effectively improved. This multi-point fixing design enhances the mechanical stability of the whole device, and ensures that it will not loosen in long-term use.

[0036] The two ends of the support plate 1 are provided with mounting rings 7, and the third screw 8 is inserted into each mounting ring 7. The mounting ring 7 and the third screw 8 provide additional fixing points, further strengthening the connection between the support plate 1 and the bone. This multi-fixing structure disperses the external force borne by the support plate 1, and significantly improves the anti-displacement performance of the fixator.

[0037] After the fixation of all the screws is completed, the support plate 1 and the connecting plate 2 together form a high-strength fixing device. The support plate 1 provides support for the osteotomy site through its unique V-shaped and wedge-shaped design, and the connecting plate 2 is connected with the bone through the screw, ensuring that the whole device is firm and immovable. This cooperation can effectively disperse the mechanical stress of the osteotomy site, and improve the operation effect.

[0038] The utility model is not limited to the above-mentioned embodiment, anyone should know that the structural change made under the inspiration of the utility model, any technical scheme with the same or similar technical scheme of the utility model falls into the protection scope of the utility model. The utility model is not described in detail, and the technical, shape and structure parts are all known technologies.

Claims

1. A novel osteotomy fixation device, characterized in that, include: The support plate (1) and the connecting plate (2) have multiple through holes on opposite sides. A first screw (3) is inserted inside the through hole. During use, the first screw (3) is used to connect with the bone. A positioning hole (4) is opened between every two through holes. A connecting hole (5) corresponding to the position of the positioning hole (4) is opened on one side of the support plate (1). A second screw (6) is inserted in the positioning hole (4) and located in the connecting hole (5). Both ends of the support plate (1) are connected to mounting rings (7). A third screw (8) is inserted in the mounting rings (7).

2. The novel osteotomy fixator according to claim 1, characterized in that, The top view of the support plate (1) is V-shaped and the side view is wedge-shaped. The wedge-shaped end of the support plate (1) is used to insert into the opening of the osteotomy gap.

3. The novel osteotomy fixator according to claim 1, characterized in that, The support plate (1) is made of PEek material or absorbable material.

4. The novel osteotomy fixator according to claim 1, characterized in that, The angle range of the V-shaped opening of the support plate (1) is 10° to 30°.

5. A novel osteotomy fixator according to claim 1, characterized in that, The cross-section of the connecting plate (2) is T-shaped, and the length of the connecting plate (2) is 2.5 to 5 cm.

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