An osteotomy guide

Abstract

The application relates to an osteotomy guide plate, belonging to the technical field of medical instruments, which comprises an osteotomy positioning block used for being mounted on an osteotomy surface, an adjusting guide block provided with a bone saw groove, an adjusting mechanism comprising a depth adjusting assembly and an angle adjusting assembly, one end of the depth adjusting assembly being movably connected to the osteotomy positioning block, the other end being fixed with the angle adjusting assembly, the adjusting guide block being provided with an arc-shaped adjusting surface, the angle adjusting assembly being movably connected to the arc-shaped adjusting surface, and a fixing assembly arranged on the adjusting mechanism, the fixing assembly being used for locking the depth adjusting assembly and the osteotomy positioning block and locking the angle adjusting assembly and the adjusting guide block. According to real-time evaluation in operation, a surgeon manually slides the depth adjusting assembly to move along the osteotomy positioning block, dynamically adjusts the osteotomy depth, and matches the current bone surface state; meanwhile, the angle adjusting assembly is pushed to slide on the arc-shaped adjusting surface of the adjusting guide block, and the osteotomy angle is real-timely finely adjusted.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to an osteotomy guide plate. Background Technology

[0002] Total knee arthroplasty (TKA) is the ultimate and effective treatment for end-stage knee osteoarthritis and other diseases. Postoperative outcomes and patient satisfaction are highly dependent on the precision of the osteotomy during the procedure. Accurate control of the osteotomy angle and depth is crucial for restoring normal lower limb alignment, ensuring joint stability, and extending prosthesis lifespan. Any minute deviation can lead to serious complications such as abnormal alignment, joint imbalance, patellar tracking problems, or premature prosthesis loosening.

[0003] With the rapid development of digital orthopedic technology, 3D reconstruction and 3D printing of personalized osteotomy guides based on preoperative CT or MRI data have emerged as key auxiliary tools for improving the precision of total knee arthroplasty (TKA). Currently, the core process of the fixed personalized 3D-printed osteotomy guide technology, widely used in clinical practice and research, includes: creating a 3D model of the skeleton based on the patient's medical images; planning the surgery and designing the guide model in software according to standard osteotomy parameters; and finally, manufacturing the physical guide through 3D printing. During surgery, this guide serves as a "static" positioning tool to guide the osteotomy operation.

[0004] However, this design relies entirely on preoperative static planning data. Once installed, the osteotomy angle and depth are fixed and cannot be fine-tuned according to changes in soft tissue tension during surgery, changes in bone surface morphology after osteophyte removal, or the surgeon's real-time assessment of the force line. This results in a severe lack of adaptability in cases of complex anatomical variations or severe deformities, making it difficult to cope with real-time changes during surgery. Summary of the Invention

[0005] This application provides an osteotomy guide plate to solve the problem that fixed personalized 3D printed osteotomy guide plate technology in related technologies cannot adapt to changes in soft tissue tension, changes in bone surface morphology, or force line assessment in real time, resulting in uncorrectable errors and high systemic risks.

[0006] An osteotomy guide plate is provided, comprising: an osteotomy positioning block for mounting on an osteotomy surface; an adjustment guide block having a bone saw groove; an adjustment mechanism including a depth adjustment component and an angle adjustment component, one end of the depth adjustment component being movably connected to the osteotomy positioning block and the other end being fixed to the angle adjustment component, the adjustment guide block having an arc-shaped adjustment surface, and the angle adjustment component being movably connected to the arc-shaped adjustment surface; and a fixing component disposed on the adjustment mechanism, the fixing component being used to lock the depth adjustment component to the osteotomy positioning block and to lock the angle adjustment component to the adjustment guide block.

[0007] By adopting the above technical solution: based on real-time intraoperative assessment, the surgeon manually slides the depth adjustment component along the osteotomy positioning block to dynamically adjust the osteotomy depth to match the current bone surface condition; simultaneously, by pushing the angle adjustment component to slide on the arc-shaped adjustment surface of the adjustment guide block, the osteotomy angle is finely adjusted in real time; once the angle and depth reach the ideal state, the fixation component is immediately operated: first, the depth adjustment component is locked to the osteotomy positioning block to prevent depth deviation; then, the angle adjustment component is locked to the adjustment guide block to ensure angle stability. At this time, the bone saw groove precisely guides the osteotomy operation, and the surgeon cuts along the bone saw groove. The entire process does not rely on preoperative static planning, improving surgical accuracy and safety.

[0008] In some embodiments, the osteotomy positioning block is provided with an installation interface for fixing to the osteotomy surface.

[0009] By adopting the above technical solution, an installation interface is integrated on the osteotomy positioning block 1, and the osteotomy positioning block and osteotomy surface are quickly and stably installed through a standardized fixing method, which significantly improves the efficiency of intraoperative operation and eliminates manual alignment error.

[0010] In some embodiments, the mounting interface is also used to mount a fixed osteotomy guide plate.

[0011] By adopting the above technical solution, the installation interface is not only used to firmly fix the osteotomy positioning block to the osteotomy surface, but also compatible with the installation of the fixed osteotomy guide plate, thus realizing the dual function of the interface.

[0012] In some embodiments, the depth adjustment component includes a first adjustment slider, the osteotomy positioning block has a perforation, the first adjustment slider is inserted into the perforation, and the fixing component is used to lock the first adjustment slider in the perforation.

[0013] By adopting the above technical solution, the surgeon can manually push the first adjustment slider to slide within the perforation track during the operation, accurately matching the current bone surface condition, and avoiding reliance on preoperative static planning data.

[0014] In some embodiments, the angle adjustment component includes a second adjustment slider, the second adjustment slider having an arc-shaped guide groove, the arc-shaped adjustment surface being connected to the arc-shaped guide groove, and the fixing component being used to lock the arc-shaped adjustment surface within the arc-shaped guide groove.

[0015] By adopting the above technical solution: dynamic angle adjustment is achieved through the precise cooperation between the arc-shaped guide groove of the second adjusting slider and the arc-shaped adjusting surface of the adjusting guide block. When the surgeon pushes the angle adjustment component during the operation, the arc-shaped adjusting surface slides along the arc-shaped guide groove to correct the osteotomy angle in real time to match the changes in the force line during the operation. The fixing component locks the arc-shaped adjusting surface in the arc-shaped guide groove to ensure the stability after the angle adjustment.

[0016] In some embodiments, the fixing component includes: an extension block connected to the osteotomy positioning block and the second adjusting slider, the extension block having a moving groove; a locking pin movably connected within the moving groove, and both the first adjusting slider and the adjusting guide block having multiple locking holes adapted to the locking pin, one end of the locking pin passing through the moving groove and engaging within the locking hole.

[0017] By adopting the above technical solution: the moving groove on the extension block allows the locking pin to slide; after the locking pin passes through the moving groove, it is engaged in multiple locking holes of the first adjusting slider and the adjusting guide block, ensuring precise fixation after depth and angle adjustment.

[0018] In some embodiments, the locking pin is provided with a stabilizing pin, the extension block is provided with a stabilizing groove, and the stabilizing pin is engaged in the stabilizing groove.

[0019] By adopting the above technical solution: the locking pin passes through the moving groove of the extension block and is engaged in the locking hole of the first adjusting slider and the adjusting guide block, while the stabilizing pin is engaged in the stabilizing groove of the extension block 50, forming a double locking mechanism.

[0020] In some embodiments, the locking pin is fitted with an anti-loosening washer.

[0021] By adopting the above technical solution, the anti-loosening washer uses axial preload to counteract the vibration of the bone saw and external disturbances, preventing the locking pin from loosening unexpectedly.

[0022] In some embodiments, the stabilizing pin has an enhanced texture.

[0023] By adopting the above technical solution, the enhanced texture significantly improves the friction coefficient between the stabilizing pin and the stabilizing groove, completely eliminating the rotational degree of freedom.

[0024] In some embodiments, both the adjusting guide block and the first adjusting slider are provided with scale bars.

[0025] By adopting the above technical solution, the depth and angle of osteotomy can be intuitively and accurately adjusted through a visual ruler with a scale bar.

[0026] The beneficial effects of the technical solution provided in this application include: This application provides an osteotomy guide plate. The surgeon precisely installs the osteotomy positioning block on the predetermined osteotomy surface of the patient's knee joint as a basic positioning reference. Subsequently, based on real-time intraoperative assessment, the surgeon manually slides the depth adjustment component along the osteotomy positioning block to dynamically adjust the osteotomy depth to match the current bone surface condition. Simultaneously, the surgeon fine-tunes the osteotomy angle in real time by pushing the angle adjustment component to slide on the arc-shaped adjustment surface of the adjustment guide block. Once the angle and depth reach the ideal state, the fixation component is immediately operated: first, the depth adjustment component is locked to the osteotomy positioning block to prevent depth deviation; then, the angle adjustment component is locked to the adjustment guide block to ensure angle stability. At this time, the bone saw groove precisely guides the osteotomy operation, and the surgeon cuts along the bone saw groove. The entire process does not rely on preoperative static planning, improving surgical accuracy and safety. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of this application; Figure 2 A schematic diagram illustrating the adjustment mechanism provided for an embodiment of this application; Figure 3 This is a schematic diagram illustrating a fixed component, provided for an embodiment of this application.

[0029] In the diagram: 1. Osteotomy positioning block; 10. Perforation; 2. Adjustment guide block; 20. Arc-shaped adjustment surface; 3. Bone saw groove; 4. Adjustment mechanism; 40. First adjustment slider; 41. Second adjustment slider; 410. Arc-shaped guide groove; 5. Fixing component; 50. Extension block; 500. Moving groove; 51. Locking pin; 510. Anti-loosening washer; 6. Mounting interface; 7. Locking hole; 8. Stabilizing pin; 80. Stabilizing groove; 81. Reinforcing texture; 9. Scale strip. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0031] This application provides an osteotomy guide plate that can solve the problem in related technologies where fixed personalized 3D printed osteotomy guide plates cannot adapt to changes in soft tissue tension, changes in bone surface morphology, or force line assessment in real time, resulting in uncorrectable errors and high systemic risks.

[0032] Reference Figure 1-3 An osteotomy guide plate includes: an osteotomy positioning block 1, an adjusting guide block 2, an adjusting mechanism 4, and a fixing component 5. The osteotomy positioning block 1, adjusting guide block 2, adjusting mechanism 4, and fixing component 5 can all be made of medical-grade stainless steel or titanium alloy. The osteotomy positioning block 1 is mounted on the osteotomy surface, and the adjusting guide block 2 has a bone saw groove 3. The adjusting mechanism 4 includes a depth adjusting component and an angle adjusting component. One end of the depth adjusting component is movably connected to the osteotomy positioning block 1, and the other end is fixed to the angle adjusting component. The adjusting guide block 2 has an arc-shaped adjusting surface 20, and the angle adjusting component is movably connected to the arc-shaped adjusting surface 20. The fixing component 5 is disposed on the adjusting mechanism 4 and is used to lock the depth adjusting component to the osteotomy positioning block 1 and to lock the angle adjusting component to the adjusting guide block 2.

[0033] The osteotomy positioning block 1 serves as the basic installation reference, with the depth adjustment component movably connected to it to adjust the osteotomy depth in real time. The angle adjustment component slides on the arc-shaped adjustment surface 20 of the adjustment guide block 2 to achieve precise correction of the osteotomy angle, and the fixation component 5 provides a dual locking function. During the surgical procedure, the surgeon first fixes the osteotomy positioning block 1 to the predetermined osteotomy surface. Then, based on changes in soft tissue tension during the operation or the bone surface morphology after osteophyte removal, the surgeon manually moves the depth adjustment component along the osteotomy positioning block 1 to adjust the depth, while simultaneously pushing the angle adjustment component to slide on the arc-shaped adjustment surface 20 to fine-tune the angle, ensuring that the lower limb force line matches the anatomical requirements in real time. During the adjustment process, the force line balance can be repeatedly verified. After the parameters meet the standards, the depth adjustment component and the osteotomy positioning block 1 are first locked to prevent depth deviation, and then the angle adjustment component and the adjustment guide block 2 are locked to ensure angle stability. Finally, the bone saw groove 3 of the adjustment guide block 2 guides the precise osteotomy. This structure eliminates the need for preoperative static planning, effectively avoiding complications such as abnormal force line and joint imbalance, especially improving the adaptability of complex deformity cases, and significantly improving osteotomy accuracy and long-term prosthesis stability.

[0034] In this application, to facilitate the installation of the osteotomy positioning block 1 onto the osteotomy surface, an installation interface 6 is provided on the osteotomy positioning block 1. The installation interface 6 is used for fixing to the osteotomy surface. By integrating the installation interface 6 onto the osteotomy positioning block 1, a standardized fixing method is used to achieve rapid and stable installation of the osteotomy positioning block 1 onto the osteotomy surface, significantly improving intraoperative operation efficiency and eliminating manual alignment errors.

[0035] In addition, the designed mounting interface 6 is also used for mounting a fixed osteotomy guide. This technical solution integrates a standardized mounting interface 6 onto the osteotomy positioning block 1, which not only securely fixes the osteotomy positioning block 1 to the osteotomy surface but also accommodates the mounting of a fixed osteotomy guide, achieving a dual function of the interface. This design, through a unified interface standard, enables the same surgical system to support both dynamically adjustable osteotomy guides and rapid deployment of fixed osteotomy guides. In terms of effectiveness, the interface's compatibility significantly improves surgical efficiency: in complex cases, dynamically adjustable guides can be seamlessly switched, avoiding force line misalignment caused by equipment conversion.

[0036] In this application, the depth adjustment component includes a first adjustment slider 40 with a trapezoidal cross-section. A perforation 10 is provided on the osteotomy positioning block 1, and the first adjustment slider 40 is inserted into the perforation 10 to form a sliding fit. To improve the stability of the first adjustment slider 40, it has a groove, and the inner wall of the perforation 10 has a protrusion that matches the groove. The protrusion and groove engage, ensuring stable movement and adjustment of the first adjustment slider 40. The fixing component 5 is used to lock the first adjustment slider 40 within the perforation 10, ensuring stability after depth adjustment. During surgery, the surgeon can manually push the first adjustment slider 40 to slide within the track of the perforation 10, precisely matching the current bone surface condition, avoiding reliance on preoperative static planning data.

[0037] In this application, the angle adjustment component includes a second adjustment slider 41 with an arc-shaped guide groove 410. An arc-shaped adjustment surface 20 is connected within the arc-shaped guide groove 410, and a fixing component 5 is used to lock the arc-shaped adjustment surface 20 within the arc-shaped guide groove 410. Dynamic angle adjustment is achieved through the precise cooperation between the arc-shaped guide groove 410 of the second adjustment slider 41 and the arc-shaped adjustment surface 20 of the adjustment guide block 2: when the surgeon pushes the angle adjustment component during surgery, the arc-shaped adjustment surface 20 slides along the arc-shaped guide groove 410, correcting the osteotomy angle in real time to match changes in the force line during surgery; the fixing component 5 locks the arc-shaped adjustment surface 20 within the arc-shaped guide groove 410, ensuring the stability after angle adjustment.

[0038] In this application, the fixing component 5 includes an extension block 50 and a locking pin 51. The extension block 50 is connected to the osteotomy positioning block 1 and the second adjusting slider 41, respectively. The extension block 50 is provided with a moving groove 500. The locking pin 51 is movably connected within the moving groove 500. Both the first adjusting slider 40 and the adjusting guide block 2 are provided with multiple locking holes 7 that are adapted to the locking pin 51. One end of the locking pin 51 passes through the moving groove 500 and is engaged within the locking hole 7. In this application, adjacent locking holes 7 are arranged with a hole spacing of 1 mm and an adjustment range of ±5 mm. In practical applications, additional or adjusted holes can be added as needed.

[0039] The extension block 50 has a movable groove 500 that allows the locking pin 51 to slide. After passing through the movable groove 500, the locking pin 51 engages with the first adjusting slider 40 and multiple locking holes 7 of the adjusting guide block 2, ensuring precise fixation after depth and angle adjustments. In principle, this design transforms the dynamic adjustment requirements during surgery into a mechanical locking mechanism, achieving millimeter-level depth fine-tuning through a 1mm hole spacing, avoiding the static limitations of traditional guide plates. The effect significantly improves surgical reliability: fine-tuning of osteotomy depth within a ±5mm range with 1mm accuracy, and fine-tuning of angle within a ±5° range with 1° accuracy, effectively preventing complications such as abnormal force lines and joint imbalances.

[0040] In this application, a stabilizing pin 8 is also provided on the locking pin 51, and a stabilizing groove 80 is provided on the extension block 50. The stabilizing pin 8 is engaged in the stabilizing groove 80. During the surgical procedure, the surgeon first securely installs the osteotomy positioning block 1 on the predetermined osteotomy surface as a basic positioning reference. Subsequently, the surgeon dynamically adjusts the osteotomy depth by manually sliding the first adjusting slider 40 within the perforation 10 of the osteotomy positioning block 1, while simultaneously pushing the second adjusting slider 41 along the arc-shaped guide groove 410 to adjust the osteotomy angle, matching the changes in bone surface morphology and force line assessment requirements during the operation in real time. After adjustment, the locking pin 51 is operated to pass through the moving groove 500 of the extension block 50 and engage in the locking hole 7 of the first adjusting slider 40 and the adjusting guide block 2. At the same time, the stabilizing pin 8 is engaged in the stabilizing groove 80 of the extension block 50, forming a double locking mechanism.

[0041] In this application, an anti-loosening washer 510 is further fitted onto the locking pin 51. The stabilizing pin 8 has a reinforcing texture 81. The anti-loosening washer 510 is fitted onto the locking pin 51. The anti-loosening washer 510 is preferably made of medical-grade elastic silicone or a metal elastic gasket, which uses axial preload to counteract bone saw vibration and external disturbances, preventing accidental loosening of the locking pin 51. Simultaneously, the addition of reinforcing texture 81, such as micro-protrusions or spiral grooves, to the surface of the stabilizing pin 8 significantly increases the coefficient of friction with the stabilizing groove 80 on the extension block 50, completely eliminating rotational freedom.

[0042] In this application, a scale bar 9 is also provided on both the adjusting guide block 2 and the first adjusting slider 40. This technical solution integrates a high-precision scale bar 9 on the adjusting guide block 2 and the first adjusting slider 40, enabling intuitive and precise adjustment of the osteotomy depth and angle through a visual scale. In principle, the scale bar 9 and the locking pin 51 and locking hole 7 form a collaborative calibration system: the surgeon can directly read the scale value during dynamic adjustment, avoiding subjective estimation errors and ensuring millimeter-level fine-tuning of depth and angle. This significantly improves the reliability of the surgery.

[0043] The implementation principle of this application's technical solution is as follows: The osteotomy positioning block 1 serves as a reference installation platform, and is quickly and securely fixed to the predetermined osteotomy surface through the standardized installation interface 6, ensuring the reliability of the basic positioning. The depth adjustment module uses the linear sliding cooperation between the first adjustment slider 40 and the perforation 10 of the osteotomy positioning block 1 to achieve millimeter-level dynamic compensation of the osteotomy depth: the slider can move smoothly within the track of the perforation 10 within a range of ±5mm, and the surgeon can manually adjust the depth according to the change in bone surface height. The scale bar 9 provides a 1mm-level intuitive reading to avoid subjective estimation errors. After the depth adjustment is completed, the locking pin 51 is inserted into the locking hole 7 of the first adjustment slider 40 through the moving groove 500 of the extension block 50, and the anti-loosening washer 510 on the locking pin 51 effectively counteracts the vibration of the bone saw and external force disturbances, preventing accidental loosening. The angle adjustment module achieves sliding correction of the osteotomy angle through the precise engagement of the arc-shaped guide groove 410 of the second adjustment slider 41 with the arc-shaped adjustment surface 20 of the adjustment guide block 2. The surgeon pushes the adjustment guide block 2 along the arc-shaped trajectory to match the lower limb force line requirements in real time. The scale bar 9 displays the angle value with a precision of 1°. After the angle adjustment is completed, the locking pin 51 is engaged with the locking hole 7 of the adjustment guide block 2 through the moving groove 500 of the extension block 50. The anti-loosening washer 510 on the locking pin 51 effectively counteracts the vibration of the bone saw and external force disturbance. Another key feature is the fitting design of the stabilizing pin 8 and the stabilizing groove 80 of the extension block 50. Its surface-enhanced texture 81 increases the coefficient of friction, completely eliminating rotational freedom and ensuring the absolute stability of depth and angle locking. The dual locking function of the locking pin 51 further strengthens the rigidity of the system. By integrating the locking functions of depth and angle adjustment into the same operating interface, the surgeon only needs to complete the dual locking in one operation: first lock the depth adjustment component, then lock the angle adjustment component. The whole process does not rely on external tools, shortening the operation time. During the procedure, the surgeon first completes the baseline installation of the osteotomy positioning block 1. Then, under real-time intraoperative evaluation, the depth and angle are dynamically optimized through the sliding adjustment component. During this process, the parameters can be repeatedly verified using the scale bar 9. Once the force line is restored to the ideal state, the locking operation is immediately performed. This eliminates the root cause of force line deviation caused by the difference between preoperative planning and actual intraoperative conditions in traditional guides.

[0044] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0045] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0046] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. An osteotomy guide plate, characterized in that, It includes: Osteotomy positioning block (1), which is used to be installed on the osteotomy surface; Adjustable guide block (2), which is provided with bone saw groove (3); The adjustment mechanism (4) includes a depth adjustment component and an angle adjustment component. One end of the depth adjustment component is movably connected to the osteotomy positioning block (1), and the other end is fixed to the angle adjustment component. The adjustment guide block (2) is provided with an arc-shaped adjustment surface (20), and the angle adjustment component is movably connected to the arc-shaped adjustment surface (20). A fixing component (5) is provided on the adjustment mechanism (4). The fixing component (5) is used to lock the depth adjustment component with the osteotomy positioning block (1) and to lock the angle adjustment component and the adjustment guide block (2).

2. The osteotomy guide plate as described in claim 1, characterized in that: The osteotomy positioning block (1) is provided with an installation interface (6), which is used to fix it to the osteotomy surface.

3. The osteotomy guide plate as described in claim 2, characterized in that: The mounting interface (6) is also used to mount a fixed osteotomy guide plate.

4. The osteotomy guide plate as described in claim 1, characterized in that: The depth adjustment component includes a first adjustment slider (40), the osteotomy positioning block (1) is provided with a perforation (10), the first adjustment slider (40) is inserted into the perforation (10), and the fixing component (5) is used to lock the first adjustment slider (40) into the perforation (10).

5. The osteotomy guide plate as described in claim 4, characterized in that: The angle adjustment component includes a second adjustment slider (41), on which an arc-shaped guide groove (410) is provided. The arc-shaped adjustment surface (20) is connected to the arc-shaped guide groove (410), and the fixing component (5) is used to lock the arc-shaped adjustment surface (20) in the arc-shaped guide groove (410).

6. The osteotomy guide plate as described in claim 5, characterized in that: The fixing component (5) includes: An extension block (50) is connected to the osteotomy positioning block (1) and the second adjusting slider (41) respectively, and the extension block (50) is provided with a moving groove (500). A locking pin (51) is movably connected in the moving groove (500), and the first adjusting slider (40) and the adjusting guide block (2) are provided with a plurality of locking holes (7) that are adapted to the locking pin (51). One end of the locking pin (51) passes through the moving groove (500) and is engaged in the locking hole (7).

7. The osteotomy guide plate as described in claim 6, characterized in that: The locking pin (51) is provided with a stabilizing pin (8), and the extension block (50) is provided with a stabilizing groove (80). The stabilizing pin (8) is engaged in the stabilizing groove (80).

8. The osteotomy guide plate as described in claim 6, characterized in that: The locking pin (51) is fitted with an anti-loosening washer (510).

9. The osteotomy guide plate as described in claim 7, characterized in that: The stabilizing pin (8) is provided with an enhanced texture (81).

10. The osteotomy guide plate as described in claim 4, characterized in that: Both the adjusting guide block (2) and the first adjusting slider (40) are provided with scale bars (9).

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