Lateral malleolus reconstruction osteotomy guide plate based on 3D printing

Abstract

The utility model discloses a lateral malleolus reconstruction osteotomy guide plate based on 3D printing, which belongs to the technical field of medical instruments and comprises a guide plate body. Through the arrangement of a fixing assembly, a first horizontal positioning groove, an indicating groove, a first inclined positioning groove, a first kirschner wire hole, a second horizontal positioning groove, a second inclined positioning groove, a second kirschner wire hole and a third kirschner wire hole, the first horizontal positioning groove, the first inclined positioning groove, the second horizontal positioning groove and the second inclined positioning groove cooperate with one another; a positioning surface can be provided for proximal fibula cutting, an osteotomy starting plane can be conveniently positioned by naked eyes in an operation through the indication groove, and then the proximal fibula can be fixed under the action of the fixing assembly, the first kirschner wire hole, the second kirschner wire hole and the third kirschner wire hole so as to ensure the stability of osteotomy. Therefore, a more stable and standard osteotomy environment is provided for fibula near-end wedge-shaped osteotomy, and stability, reliability and accuracy of osteotomy are ensured.

Description

Technical Field

[0001] This utility model relates to the field of proximal fibular osteotomy guide plate technology, and in particular to a 3D-printed lateral malleolus reconstruction osteotomy guide plate. Background Technology

[0002] In foot and ankle surgery, lateral malleolar fractures or injuries are common clinical problems. Traditional surgical treatments often rely on the surgeon's experience and two-dimensional imaging data, making it difficult to achieve precise three-dimensional localization of fracture fragments and individualized surgical planning. However, 3D-printed lateral malleolar reconstruction osteotomy guides can be created by three-dimensionally reconstructing and precisely measuring the patient's individual skeletal structure to produce a guide that perfectly matches the patient's bone structure, thereby guiding the surgeon to perform precise osteotomy and reconstruction surgery.

[0003] However, existing osteotomy guides have limited accuracy and stability, which reduces the success rate of surgery and the quality of patient recovery. To address these issues, we provide a 3D-printed lateral ankle reconstruction osteotomy guide. Utility Model Content

[0004] The purpose of this invention is to solve the problems of limited accuracy and insufficient stability in the use of osteotomy guides in the prior art, and to propose a 3D-printed lateral ankle reconstruction osteotomy guide.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A 3D-printed lateral malleolus reconstruction osteotomy guide plate includes a guide plate body. The guide plate body features a three-sided wrap-around design, comprising a front side, a right side, and a left side. Two fixing components are mounted on the guide plate body. The front side has a first horizontal positioning groove, two equally spaced indicator grooves, two symmetrical first oblique positioning grooves, and equally spaced first Kirschner wire holes. The right side has a second horizontal positioning groove, two second oblique positioning grooves, multiple second Kirschner wire holes, and equally spaced third Kirschner wire holes. Two observation holes are located on the left side.

[0007] Preferably, the fixing component includes a first component cavity and a second component cavity. The inner wall of the first component cavity is formed on the outer surface of the right side of the guide plate, and the inner wall of the second component cavity is formed on the outer surface of the left side of the guide plate. The inner wall of the first component cavity is provided with four circumferentially arranged first slots.

[0008] Preferably, the inner wall of the second component cavity is provided with an insertion hole, and the inner wall of the insertion hole is provided with two second slots. The inner wall of the first component cavity is inserted with a rod, and the outer surface of the rod is fixedly connected with four circumferentially arrayed blocks, which are adapted to the first slots.

[0009] Preferably, one end of the insertion rod is rotatably connected to a rotating block, the inner wall of the insertion rod is provided with an annular groove, and the inner side of the rotating block is rotatably connected to the inner wall of the annular groove. Both ends of the rotating block are fixedly installed with protrusions, and the shape of the rotating block is adapted to the inner wall of the insertion hole and the inner wall of the second slot.

[0010] Compared with the prior art, this utility model provides a 3D-printed lateral ankle reconstruction osteotomy guide plate, which has the following beneficial effects.

[0011] 1. This utility model, through the coordinated action of a fixing component, a first horizontal positioning groove, an indicator groove, a first oblique positioning groove, a first Kirschner wire hole, a second horizontal positioning groove, a second oblique positioning groove, and a second and third Kirschner wire holes, utilizes the functions of the first horizontal positioning groove, the first oblique positioning groove, the second horizontal positioning groove, and the second oblique positioning groove to provide a positioning surface for proximal fibular osteotomy. The indicator groove facilitates the visual positioning of the osteotomy starting plane during the operation. Subsequently, with the action of the fixing component, the first Kirschner wire hole, the second Kirschner wire hole, and the third Kirschner wire hole, the proximal fibular bone can be fixed to ensure the stability of the osteotomy. This provides a more stable and standard osteotomy environment for proximal fibular wedge osteotomy, ensuring the stability, reliability, and accuracy of the osteotomy.

[0012] 2. By providing an observation hole, this utility model facilitates observation of the position of the fibula in the osteotomy guide, thereby improving the success rate of the surgery. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0014] Figure 2 This is a three-dimensional structural schematic diagram of the present invention from another perspective.

[0015] Figure 3 This is a three-dimensional structural diagram of the fixing component of this utility model.

[0016] Figure 4 This is a schematic diagram of the internal structure of the insertion rod of this utility model.

[0017] In the figure: 1. Guide plate body; 2. Front of guide plate; 3. Right side of guide plate; 4. Left side of guide plate; 5. Fixing component; 501. First component cavity; 502. First slot; 503. Second component cavity; 504. Insertion hole; 505. Second slot; 506. Insert rod; 507. Locking block; 508. Rotating block; 509. Annular groove; 6. First horizontal positioning groove; 7. Indicator groove; 8. First oblique positioning groove; 9. First Kirschner wire hole; 10. Second horizontal positioning groove; 11. Second oblique positioning groove; 12. Second Kirschner wire hole; 13. Third Kirschner wire hole; 14. Observation hole. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Reference Figure 1-4 A 3D-printed lateral malleolus reconstruction osteotomy guide plate includes a guide plate body 1. In this utility model, the guide plate body 1 has a three-sided wrap-around design. The guide plate body 1 includes a guide plate front 2, a guide plate right side 3, and a guide plate left side 4. In this embodiment, the guide plate body 1 is designed according to each patient's individual needs, and the guide plate material selected for the guide plate body 1 is made of biocompatible SG resin. Two fixing components 5 are provided on the guide plate body 1.

[0020] The fixing component 5 includes a first component cavity 501 and a second component cavity 503. In this embodiment, the entire guide plate of the fixing component 5 is made of biocompatible SG resin. The inner wall of the first component cavity 501 is opened on the outer surface of the right side 3 of the guide plate, and the inner wall of the second component cavity 503 is opened on the outer surface of the left side 4 of the guide plate. The inner wall of the first component cavity 501 is provided with four circumferentially arranged first slots 502.

[0021] The inner wall of the second component cavity 503 is provided with an insertion hole 504, and the inner wall of the insertion hole 504 is provided with two second slots 505. The inner wall of the first component cavity 501 is inserted with a rod 506. The outer surface of the rod 506 is fixedly connected with four circumferentially arrayed locking blocks 507. The four locking blocks 507 are adapted to the first slots 502. In this embodiment, the locking blocks 507 can limit the rod 506 in the first slots 502 to prevent it from shaking and thus improve stability.

[0022] One end of the insertion rod 506 is rotatably connected to a rotating block 508. The inner wall of the insertion rod 506 is provided with an annular groove 509, and the inner side of the rotating block 508 is rotatably connected to the inner wall of the annular groove 509. Both ends of the rotating block 508 are fixedly installed with protrusions. The shape of the rotating block 508 is adapted to the inner wall of the insertion hole 504 and the inner wall of the second slot 505. In this embodiment, when the rotating block 508 is inserted into the interior of the second component cavity 503, the rotating block 508 is rotated to abut against the inner wall of the second component cavity 503, thereby initially fixing the fibula.

[0023] The guide plate 2 has a first horizontal positioning groove 6 and equidistantly arranged indicator grooves 7. In this embodiment, the spacing between the equidistantly arranged indicator grooves 7 is 1mm, which facilitates the positioning of the osteotomy starting plane under the naked eye during the operation. The guide plate 2 has two symmetrical first oblique positioning grooves 8 and equidistantly arranged first Kirschner wire holes 9. In this embodiment, the first Kirschner wire holes 9, the second Kirschner wire holes 12, and the third Kirschner wire holes 13, together with Kirschner wires, can fix the proximal fibula to ensure the stability of the osteotomy. The right side 3 of the guide plate has a second horizontal positioning groove 10. Two second oblique positioning grooves 11 are provided on the side 3. In this embodiment, the first horizontal positioning groove 6, the first oblique positioning groove 8, the second horizontal positioning groove 10, and the second oblique positioning groove 11 are used to provide a positioning surface for the proximal fibula cutting, thereby ensuring the accuracy of the fibula. Multiple second Kirschner wire holes 12 are provided on the right side 3 of the guide plate, and third Kirschner wire holes 13 are provided on the right side 3 of the guide plate at equal intervals. Two observation holes 14 are provided on the left side 4 of the guide plate. In this embodiment, the observation holes 14 can make it easier for doctors to observe the position of the fibula in the osteotomy guide plate, thereby improving the success rate of the operation.

[0024] Working principle: When using this device, preoperative planning is first performed by reconstructing the patient's CT image in three dimensions to locate the target lesion. Then, the osteotomy guide plate for the lesion inside the lateral malleolus is fabricated using 3D printing. The guide plate body 1 is then placed to cover it. Next, the insertion rod 506 and rotating block 508 are manually inserted into the first component cavity 501. The rotating block 508 is then rotated to align with the insertion hole 504 and the second slot 505. Thus, after pushing the insertion rod 506 to its extreme point, the locking block 507 is positioned inside the first slot 502, and the rotating block 508 is inserted into the second component cavity 503. Then, the rotation is performed again... The movable block 508 abuts against the inner wall of the second component cavity 503, thereby initially fixing the fibula. Finally, it is positioned according to the fixing points marked in the design. Then, the proximal fibula can be fixed by the first Kirschner hole 9, the second Kirschner hole 12, and the third Kirschner hole 13 to ensure the stability of the osteotomy. The first horizontal positioning groove 6, the first oblique positioning groove 8, the second horizontal positioning groove 10, and the second oblique positioning groove 11 can provide a positioning surface for the proximal fibula cutting, thereby providing a more stable and standard osteotomy environment for the wedge osteotomy of the proximal fibula, ensuring the stability, reliability, and accuracy of the osteotomy.

[0025] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. 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 3D printing based osteotomy guide for lateral malleolus reconstruction comprising a guide body (1), characterized in that, The guide plate body (1) is a three-sided wrap-around design. The guide plate body (1) includes a front side (2), a right side (3), and a left side (4). Two fixing components (5) are provided on the guide plate body (1). A first horizontal positioning groove (6) is provided on the front side (2). An equidistant indicator groove (7) is provided on the front side (2). Two symmetrical first oblique positioning grooves (8) are provided on the front side (2). An equidistant first Kirschner wire hole (9) is provided on the front side (2). A second horizontal positioning groove (10) is provided on the right side (3). Two second oblique positioning grooves (11) are provided on the right side (3). Multiple second Kirschner wire holes (12) are provided on the right side (3). An equidistant third Kirschner wire hole (13) is provided on the right side (3). Two observation holes (14) are provided on the left side (4).

2. The 3D printing based osteotomy guide for lateral malleolus reconstruction according to claim 1, wherein, The fixing component (5) includes a first component cavity (501) and a second component cavity (503). The inner wall of the first component cavity (501) is opened on the outer surface of the right side (3) of the guide plate, and the inner wall of the second component cavity (503) is opened on the outer surface of the left side (4) of the guide plate. The inner wall of the first component cavity (501) is provided with four circumferentially arranged first slots (502).

3. The 3D printing based osteotomy guide for lateral malleolus reconstruction according to claim 2, wherein, The inner wall of the second component cavity (503) is provided with an insertion hole (504), and the inner wall of the insertion hole (504) is provided with two second slots (505). The inner wall of the first component cavity (501) is inserted with a rod (506), and the outer surface of the rod (506) is fixedly connected with four circumferentially arrayed locking blocks (507), and the four locking blocks (507) are adapted to the first slots (502).

4. The 3D-printed lateral malleolus reconstruction osteotomy guide plate according to claim 3, characterized in that, One end of the insertion rod (506) is rotatably connected to a rotating block (508). The inner wall of the insertion rod (506) is provided with an annular groove (509), and the inner side of the rotating block (508) is rotatably connected to the inner wall of the annular groove (509). Both ends of the rotating block (508) are fixedly installed with protrusions. The shape of the rotating block (508) is adapted to the inner wall of the insertion hole (504) and the inner wall of the second slot (505).

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