Guide plate suitable for V-shaped osteotomy

Abstract

The utility model relates to a guide shield suitable for V-shaped osteotomy, including shield body and front fixed hole reinforcing plate, the shield body lower surface is equipped with the bone groove of half through -groove shape, the shield body front part is equipped with two parallel front fixed holes, the shield body rear part both sides are equipped with the bulge of downward extension, the opposite rear fixed hole on the bulge, the shield body is equipped with the guide structure near the front fixed hole, the V -shaped guide hole is opened to the guide structure, the utility model discloses the shield body can be fixed on the bone through the setting, and the bone is fixed in the bone groove of shield body with the help of front fixed hole and rear fixed hole, and the bone is fixed, then the V -shaped guide hole on the guide structure is used to limit the slice saw, can assist slice or bone knife fast and accurately carry out osteotomy, reduce the bone loss, and eliminate the body damage.

Description

Technical Field

[0001] This utility model relates to a surgical aid, specifically a guide plate suitable for V-shaped osteotomy. Background Technology

[0002] Clinically, we know that V-shaped osteotomy is superior to transverse osteotomy because it provides a large area of ​​bone contact and also offers mid-lateral and rotational stability. A standard V-shaped osteotomy is performed with a thin, oscillating saw. To avoid damaging the humeral articular cartilage, sawing is stopped near the subchondral cortex, and the final step of the osteotomy is completed with a bone chisel. Currently, violent, uncontrolled oscillation can lead to bone loss at the osteotomy site, especially at the apex of the V-shape sawed from the medial and lateral sides. Simultaneously, the articular surface becomes uneven. In one area, the saw blade may still be embedded in the subchondral bone, while in another location, the blade may have penetrated the joint, damaging the humeral articular surface.

[0003] Currently, a utility model patent with publication number CN210472218U discloses a V-shaped osteotomy device, specifically a V-shaped osteotomy device for orthopedic surgery. Its features include: one end of the transition section is connected to the osteotomy blade body, and the other end is connected to the osteotomy blade rod; the osteotomy blade body has a concave hyperboloid surface, and the osteotomy blade is V-shaped. It has a simple structure, low cost, and precise and quick operation. During surgery: 1. Distal humeral fractures can be reduced and internally fixed under direct vision, making the surgical procedure easier; 2. The V-shaped osteotomy increases the contact area of ​​the fracture ends compared to a transverse osteotomy, ensuring close contact of the osteotomy surface in stable fractures and preventing possible rotation of the osteotomy ends; 3. Combined with tension band fixation, it provides dynamic pressure to the osteotomy surface, which is more conducive to the healing of the osteotomy ends.

[0004] As can be seen from the above-disclosed technical content, as prior art, the utility model with announcement number CN210472218U achieves V-shaped osteotomy by using a V-shaped osteotomy knife. However, the osteotomy knife is chiseled in, which is not only too slow but also prone to causing excessive bone loss, affecting subsequent recovery, and is not very convenient to use. Utility Model Content

[0005] To address the problems existing in the prior art, this utility model provides a guide plate suitable for V-shaped osteotomy, which can assist saw blades or bone cutters in quickly and accurately cutting bones, reducing bone loss and preventing bodily injury.

[0006] To achieve the above objectives, this utility model provides a guide plate suitable for V-shaped osteotomy, comprising a plate body and a front fixation hole reinforcing plate. The lower surface of the plate body has a semi-through groove shaped bone groove. The front part of the plate body has two parallel front fixation holes. The rear part of the plate body has downwardly extending protrusions on both sides, with opposing rear fixation holes on the protrusions. The plate body has a guide structure near the front fixation holes, and the guide structure has V-shaped guide holes.

[0007] In addition, the guide plate for V-shaped osteotomy proposed according to the above embodiments of this utility model may also have the following additional technical features:

[0008] As a further improvement of this utility model, a front fixing hole reinforcing plate is provided at the connection between the guard plate body and the front fixing hole.

[0009] As a further improvement of this utility model, the surface of the bone groove is adapted to the surface of the bone.

[0010] As a further improvement of this utility model, the guide structure is five to seven centimeters higher than the surface of the guard plate body.

[0011] As a further improvement of this utility model, the upper end of the guide structure is curved.

[0012] By means of the above solution, the present invention has at least the following advantages: by setting a protective plate body that can be fixed to the bone, the bone is fixed in the bone groove of the protective plate body by means of the front fixing hole and the rear fixing hole, thus fixing the bone. Then, the saw blade is limited by the V-shaped guide hole on the guide structure, which can assist the saw blade or bone knife to cut the bone quickly and accurately, reduce bone loss, and prevent body injury. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a three-dimensional schematic diagram of a guide plate suitable for V-shaped osteotomy.

[0015] Figure 2 This is a bottom view of a guide plate suitable for V-shaped osteotomy;

[0016] Figure 3 This is a three-dimensional view of the reinforcing plate with the front fixation hole for installing a guide guard suitable for V-shaped osteotomy.

[0017] In the diagram: 1. Protective plate body, 2. Guide structure, 3. V-shaped guide hole, 4. Front fixation hole, 5. Rear fixation hole, 6. Bone groove, 7. Front fixation hole reinforcement plate. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0019] In Embodiment 1 of this application, as Figure 1 and Figure 2 As shown, the guide plate applicable to V-shaped osteotomy (hereinafter referred to as "the present invention") includes a plate body 1, a rear fixation hole 5, a bone groove 6, and a front fixation hole reinforcing plate 7. The lower surface of the plate body 1 is provided with a semi-through groove shaped bone groove 6. The front part of the plate body 1 is provided with two parallel front fixation holes 4. The rear part of the plate body 1 is provided with downwardly extending protrusions on both sides, with opposing rear fixation holes 5 on the protrusions. The plate body 1 is provided with a guide structure 2 near the front fixation holes 4, and a V-shaped guide hole 3 is provided on the guide structure 2.

[0020] The utility model patent CN210472218U discloses a V-shaped osteotomy device (hereinafter referred to as "the patent"). It achieves V-shaped osteotomy by using a V-shaped osteotomy knife. However, the osteotomy knife is chiseled in, which is not only too slow but also prone to causing excessive bone loss, affecting subsequent recovery and is not very convenient to use. The present invention, by setting a protective plate body 1 that can be fixed to the bone, fixes the bone in the bone groove 6 of the protective plate body 1 with the help of the front fixing hole 4 and the rear fixing hole 5, thus fixing the bone. Then, the V-shaped guide hole 3 on the guide structure 2 limits the saw blade, which can assist the saw blade or osteotomy knife to quickly and accurately cut the bone, reduce bone loss, and prevent body injury.

[0021] This second embodiment is basically the same in structure as the first embodiment, the difference being that, as Figure 3 As shown, a front fixing hole reinforcing plate 7 is provided at the connection between the protective plate body 1 and the front fixing hole 4. This reinforces the fixation of the front fixing hole 4.

[0022] To further optimize the working efficiency of this application, and to allow the protective plate body 1 to better conform to the bone surface and improve stability, the surface of the bone groove 6 is designed to conform to the bone surface. To improve visibility and prevent obstruction, the guide structure 2 is positioned five to seven centimeters above the surface of the protective plate body 1. The upper end of the guide structure 2 is curved.

[0023] First, the bone morphology is scanned using CT or ultrasound imaging. Then, a guide plate suitable for V-shaped osteotomy is 3D printed based on the bone morphology. After sterilization, it can be used.

[0024] When this utility model is used, its specific operation is as follows:

[0025] When in use, the bone groove 6 of the plate body 1 is fitted to the corresponding position of the bone, and then the bone pins are inserted into the front fixation hole 4 and the rear fixation hole 5 to fix the plate body 1 to the bone. Then, the doctor can use a blade saw to insert into the V-shaped guide hole 3 of the guide structure 2 to perform osteotomy. Since the height of the guide structure 2 is customized, it can hold the blade saw in place and prevent it from going too deep and damaging other tissues.

[0026] In summary, the guide plate for V-shaped osteotomy of this utility model embodiment, by setting a plate body 1 that can be fixed to the bone, fixes the bone in the bone groove 6 of the plate body 1 with the help of the front fixing hole 4 and the rear fixing hole 5, thereby fixing the bone. Then, the V-shaped guide hole 3 on the guide structure 2 is used to limit the saw blade, which can assist the saw blade or bone knife to quickly and accurately cut the bone, reduce bone loss, and prevent body injury.

[0027] In the description of this specification, the use of terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refers to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0028] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention is limited to these examples; within the framework of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity. Any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. A guide plate suitable for V-shaped osteotomy, comprising a plate body (1) and a front fixation hole reinforcing plate (7), characterized in that, The lower surface of the protective plate body (1) is provided with a bone groove (6) in the shape of a semi-through groove. The front part of the protective plate body (1) is provided with two parallel front fixing holes (4). The rear part of the protective plate body (1) is provided with downwardly extending protrusions on both sides, and the protrusions are provided with opposing rear fixing holes (5). The protective plate body (1) is provided with a guide structure (2) near the front fixing holes (4), and the guide structure (2) is provided with a V-shaped guide hole (3).

2. The guide plate for V-shaped osteotomy according to claim 1, characterized in that, The front fixing hole reinforcement plate (7) is provided at the connection between the protective plate body (1) and the front fixing hole (4).

3. The guide plate for V-shaped osteotomy according to claim 2, characterized in that, The surface of the bone groove (6) is fitted to the bone surface.

4. The guide plate for V-shaped osteotomy according to claim 1, characterized in that, The guide structure (2) is five to seven centimeters higher than the surface of the guard plate body (1).

5. The guide plate for V-shaped osteotomy according to claim 4, characterized in that, The guide structure (2) has an arc at the top.

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