CN116509499A - Multi-functional fine setting shin bone marrow chamber location cuts bone device - Google Patents

Abstract

This application relates to the field of medical devices, in particular to a multifunctional fine-tuning tibial medullary canal positioning osteotomy device, which includes a tibial medullary canal positioning assembly, including a fixation block, a medullary needle block installed on the fixation block, and a perforation A needle for insertion into the medullary cavity at the center of the needle block; a tibial osteotomy assembly, including a tibial positioner, a mounting rod, and a tibial osteotomy guide sleeved on the mounting rod; tibial varus and varus The angle adjustment assembly includes a slider, and an angle plate rotatably mounted on the fixed block; the tibial retroversion adjustment assembly includes a retroversion block, and a retroversion adjustment block that limits the retroversion block; Wherein, the sliding block and the backward tilting block are both slidably arranged on the medullary needle, and after adjustment, the sliding block and the backward tilting block are slid toward the direction of the tibia until they are respectively connected with the angle plate and the backward tilting adjustment block. Fits in place. The application has the effect of precisely adjusting the valgus-valgus angle and the posterior inclination angle of the tibia.

Description

A multi-functional fine-tuning tibial medullary cavity positioning osteotomy device

technical field

The present application relates to the field of medical devices, in particular to a multifunctional fine-tuning tibial medullary cavity positioning osteotomy device.

Background technique

Knee replacement is a surgical method that uses artificial prosthesis to relieve knee joint pain and correct knee joint deformity, thereby improving knee joint function and improving people's quality of life. Tibial osteotomy is an indispensable key step in knee replacement. At present, extramedullary positioning osteotomy is generally used in surgery, which is generally composed of tibial osteotomy plate, extramedullary force line rod, force line adjustment rod and ankle grasper. , there is also an osteotomy device positioned in the tibial marrow, which is relatively rare on the operating table at present.

For the existing extramedullary positioning, multiple verifications are required to ensure that the extramedullary locator can accurately locate the medullary cavity of the human body (ie, the anatomical axis of the tibia). When extramedullary osteotomy is used for tibial osteotomy, the varus and varus angles cannot be adjusted accurately. Although the varus and varus angles are engraved on the ankle holder, it is necessary to adjust the extramedullary force line rod in the force line adjustment rod during the actual operation. The overall height changes, causing the angle scale at the bottom to be inaccurate in actual use. Similarly, during tibial osteotomy, the retroversion angle cannot be accurately determined. The retroversion angle is engraved on the ankle holder, but in the actual operation process, the height of the extramedullary line of force locator needs to be adjusted, resulting in the fact that the retroversion angle scale is not used in practice. Inaccurate.

For the existing tibial medullary cavity positioning osteotomy device, only the positioning of the tibial medullary cavity can be realized, and the valgus and valgus angle cannot be adjusted. its line of force. Therefore, doctors often need to adjust the tibial varus and varus angles according to the patient's skeletal condition in order to cut out a suitable tibial plane. The current tibial medullary cavity positioning osteotomy device cannot adjust the retroversion angle, which needs to be adjusted according to the individual conditions of the knee replacement product. For example, if the tibial plateau pad does not have a 3-degree retroversion angle, the tibial osteotomy surface needs to be cut out. The plane with a 3-degree retroversion and whether the vertical column on the tibial plateau support product also has an impact on the tibial osteotomy surface. Generally speaking, the tibial osteotomy is chosen to be cut into a 3-degree posterior osteotomy surface.

With regard to the related technologies mentioned above, the inventor believes that during the operation, the prior art has the defect of being unable to accurately adjust the valgus-valgus angle and the retroversion angle of the tibia.

Contents of the invention

In order to achieve the effect of precise adjustment of tibial valgus and posterior inclination, the present application provides a multifunctional fine-tuning tibial medullary canal positioning osteotomy device.

The application provides a multi-functional fine-tuning tibial medullary canal positioning osteotomy device, which adopts the following technical scheme:

Multifunctional fine-tuning tibial medullary canal positioning osteotomy device, including:

The tibial medullary canal positioning assembly includes a fixed block abutted against the end of the tibia away from the ankle, a needle block pierced on the fixed block, and a needle pierced at the center of the needle block for insertion into the medullary cavity ;

A tibial osteotomy assembly, a tibial positioner, a mounting rod fixed on the side of the tibial positioner facing the tibia, and a tibial osteotomy guide sleeved on the mounting rod;

The tibial valgus-valgus adjustment assembly includes a slider set on the side of the needle block away from the tibia and sleeved on the needle, and a slider that is rotatably mounted on the fixed block and whose peripheral surface is in line with the An angle plate fitted with a slider, the slider and the angle plate are fitted at different angles to adjust the angle of the varus and varus angles of the tibial osteotomy guide;

The tibial reclining angle adjustment assembly includes a reclining block arranged above the fixed block and fitted to the fixed block, and is used in conjunction with the reclining block to be installed on the fixed block for adjusting the The reclining adjustment block is limited by the reclining block, and the reclining adjusting block is provided with an angle scale, and the reclining blocking block and the reclining adjusting block have different positions on the angle scale to fit and adjust the tibia The angle of back tilt of the osteotomy guide;

Wherein, both the slider and the retroverted block are slidably arranged on the medullary needle, and the valgus and retroversion angles are adjusted after sliding the slider and the retroverted block toward the direction away from the tibia. To adjust, slide the slider and the reclining block toward the direction of the tibia until they are fixed to the angle plate and the reclining adjustment block respectively.

By adopting the above-mentioned technical scheme, during the operation, it is necessary to open a hole above the tibial medullary cavity first, then assemble the whole set of medullary cavity positioning osteotomy device, insert the medullary needle into the medullary cavity, and slide the sliding bone on the medullary Lift the block away from the tibia, swing the medullary cavity locator left and right to adjust the varus and varus angle, the angle plate can reflect the specific angle of varus and varus, release the slider after adjusting the angle, and adjust the A good valgus angle is fixed; lift the retroverted block sliding on the medullary needle away from the tibia, and tilt the tibial osteotomy guide backward to drive the retroverted adjustment block on the medullary cavity locator to adjust the tibial osteotomy The reclining angle of the face, the angle scale on the reclining adjustment block can reflect the angle of the reclining angle. After adjustment, put down the reclining block so that the reclining block and the reclining adjusting block fit together, which can adjust the reclining angle of the tibial section. Locking, adjust the tibial osteotomy plate to the appropriate osteotomy position through the installation rod, so as to achieve the effect of precise adjustment of the tibial varus, posterior inclination and osteotomy position, and perform more precise tibial osteotomy.

Preferably, a first positioning block is provided on the end surface of the slider close to the angle plate, and a plurality of first positioning slots are evenly opened on the peripheral surface of the angle plate according to the angle, and the first positioning block is locked connected to the first positioning slot corresponding to one of the angles.

By adopting the above technical solution, after the valgus angle is adjusted, the first positioning block is clamped in the corresponding first positioning groove according to the required angle, so as to achieve the effect of fixing after adjusting the angle.

Preferably, the angle plate has a symmetrical structure, the angle bisector of the angle plate is a zero reticle, and the angle range of both sides of the zero reticle is 0-11°.

By adopting the above technical scheme, the scale on the front view angle plate reflects the specific angle of valgus and valgus, and the angle of valgus and valgus is generally ±10° to meet the clinical needs, so the angle range of the angle plate can fully meet the clinical needs, and more Allows for precise adjustments.

Preferably, the backward tilting block includes a base fitted to the fixed block, and a positioning rod disposed on the side of the base away from the tibia, and the end of the positioning rod away from the base is provided with a second positioning rod. The reclining adjustment block includes a rotating part and a moving part. The end surface of the rotating part away from the moving part is uniformly provided with a plurality of second positioning grooves according to the angle, and the positioning block is snapped into one of them. In the second positioning slot corresponding to the angle.

By adopting the above-mentioned technical solution, after the reclining angle is adjusted, the reclining block is lifted away from the tibia. At this time, the base also leaves the fixed block, and the positioning block moves away from the tibia. The rotation angle of the rotating part is moved, and after the adjustment, the reclining clamping block is released, so that the positioning block is clamped in the second positioning groove corresponding to the adjusted angle, thereby realizing the fixation of the reclining angle.

Preferably, the second positioning groove near one end of the rotating part is a zero scale line, and the angle range of the rotating part is 0-8°.

By adopting the above technical solution, it is convenient to adjust the caster angle and fix it during the operation, and the scale of the rotating part can fully meet the clinical needs.

Preferably, one end of the tibial positioner facing the fixed block is provided with a relief opening, the fixed block is located in the relief opening, the moving part is slidably arranged on the tibial positioner, and the installation rod It is arranged on the side facing away from the relief opening.

By adopting the above-mentioned technical solution, the setting of the relief port can reduce the volume of the device, and it is more space-saving and convenient during osteotomy. Swipe up the corresponding distance for easy operation.

Preferably, one end of the base close to the installation rod is provided with a reclining baffle extending toward the side away from the tibia, and the position of the fixing block corresponding to the reclining baffle is on the front of the reclining baffle. A rear tilt stop is arranged above.

By adopting the above technical scheme, when the reclining block is lifted to the side away from the tibia, the reclining block blocks the distance that the reclining baffle moves away from the tibia, so that the movement of the reclining block is controlled by the reclining block Within the range of the distance from the backward tilting baffle, it avoids wasting time due to too long moving distance, and at the same time facilitates quick operation during the operation.

Preferably, a reinforcement plate is provided on the outer wall of the end of the slider away from the tibia.

By adopting the above technical solution, the reinforcing plate acts as a handle, which facilitates moving the slider towards a direction away from the tibia during the operation, so as to avoid being out of hand.

Preferably, a handle is provided at the end of the medullary needle away from the tibia.

By adopting the above technical solution, the handle is convenient for inserting the medullary needle into the medullary cavity, so that the process of inserting the medullary needle into the medullary cavity is more stable.

Preferably, the tibial osteotomy guide is provided with a wrench for fixing the tibial osteotomy guide on the installation rod.

By adopting the above technical scheme, the tibial osteotomy guide can be adjusted up and down on the mounting rod by 2 mm according to the surgical requirements. After adjusting the position of the tibial osteotomy guide, fix the tibial osteotomy guide on the mounting rod with a wrench to facilitate osteotomy.

In summary, the present application includes at least one of the following beneficial technical effects:

1. During the operation, it is necessary to make a hole above the tibial medullary cavity first, then assemble the whole set of medullary cavity positioning osteotomy device, insert the medullary needle into the medullary cavity, and slide the slider on the medullary needle away from the tibia Lift it in the direction, swing the marrow cavity locator left and right to adjust the valgus angle, the angle plate can reflect the specific angle of valgus and valgus, after adjusting the angle, release the slider, and after the slider is fitted with the angle plate, the adjusted varus and varus The angle is fixed; lift the retroversion block sliding on the medullary needle away from the tibia, and tilt the tibial osteotomy guide backward to drive the retroversion adjustment block on the medullary cavity locator to adjust the posterior tilt of the tibial osteotomy surface Angle, the angle scale on the reclining adjustment block can reflect the angle of the reclining angle. After adjustment, put down the reclining block so that the reclining block fits the reclining adjusting block, which can not only lock the reclining angle of the tibia section, but also The osteotomy plate is adjusted to the appropriate osteotomy position through the installation rod, so as to achieve the effect of precise adjustment of the tibial varus, posterior inclination and osteotomy position, and perform more precise tibial osteotomy.

2. The scale on the front view angle plate reflects the specific angle of valgus and valgus. Generally, the angle of valgus and valgus is ±10° to meet clinical needs, so the angle range of the angle plate can fully meet clinical needs, and it is more convenient for precise adjustment.

3. After adjusting the reclining angle, lift the reclining block away from the tibia. At this time, the base also leaves the fixed block, and the positioning block moves away from the tibia. When the rotating part is rotated, the moving part will follow the rotation of the rotating part. The angle is moved, and after the adjustment, the reclining block is released, so that the positioning block is clamped in the second positioning groove corresponding to the adjusted angle, so as to realize the fixation of the reclining angle.

Description of drawings

FIG. 1 is a schematic diagram of the overall structure of a multifunctional fine-tuning tibial medullary cavity positioning osteotomy device in an embodiment of the present application;

Fig. 2 is a schematic diagram of the front view structure embodying the present application;

Fig. 3 is a left view structure schematic diagram embodying the present application;

Fig. 4 is a partially enlarged schematic view embodying part A.

Explanation of reference signs: 1, tibial medullary canal positioning component; 11, fixed block; 111, fixed seat; 112, fixed plate; 12, medullary needle block; 121, square block; 122, cylindrical block; 13, medullary needle; 131, handle; 2, tibial osteotomy assembly; 21, tibial locator; 211, relief opening; 22, installation rod; 23, tibial osteotomy guide; 231, wrench; 3, tibial valgus adjustment assembly; 31 , slider; 311, first positioning block; 312, reinforcement plate; 32, angle plate; 321, first positioning groove; 4, tibial retroversion adjustment component; 41, retroversion block; 411, base; 412, positioning 413, the second positioning block; 42, the reclining adjustment block; 421, the rotating part; 422, the moving part; 423, the second positioning groove; 43, the reclining baffle plate; 44, the reclining block.

Detailed ways

The present application will be described in further detail below in conjunction with accompanying drawings 1-4.

The embodiment of the present application discloses a multifunctional fine-tuning tibial medullary cavity positioning osteotomy device. 1 and 2, the tibial medullary canal positioning osteotomy device includes a tibial medullary canal positioning assembly 1 for positioning during the operation, a tibial osteotomy assembly 2 for performing osteotomy, and a tibial osteotomy assembly 2 for adjusting the internal and external varus during the operation. Angle of tibial varus adjustment assembly 3, and tibial retroversion adjustment assembly 4 for adjusting the retroversion angle during the operation. The tibial medullary canal positioning assembly 1 includes a fixed block 11 abutting against the end of the tibia away from the ankle, a needle block 12 pierced and installed on the fixed block 11, and a needle block 12 pierced at the center of the needle block 12 for insertion into the medullary cavity. Medullary needle13.

1, the fixed block 11 includes a fixed seat 111 and a fixed plate 112 perpendicular to the fixed seat 111, the fixed seat 111 is square, the center of the fixed seat 111 is provided with a square opening, and the medullary needle block 12 is arranged in the square opening. The medullary needle block 12 includes a square block 121 and a columnar block 122, the midlines of the square block 121 and the columnar block 122 coincide, the square block 121 is arranged on the side close to the tibia, and the columnar block 122 is vertically fixed on the square block 121 away from the tibia At the center of one side, and the square block 121 and the fixed base 111 are rotationally connected. Two fixing plates 112 are provided, and the two fixing plates 112 are arranged symmetrically, and the two fixing plates 112 are respectively fixed vertically on the opposite outer wall of the fixing seat 111, and the two fixing plates 112 are one end and the fixing seat 111 facing the tibia. One side is flush, one side of the square block 121 is attached to one of the fixing plates 112, and the end of the fixing plate 112 away from the tibia is chamfered.

1 and 3, the center of the needle block 12 is provided with a needle 13 opening according to the diameter of the needle 13. When in use, the needle 13 passes through the needle 13 opening and is inserted into the pre-punched tibia. One end of the medullary needle block 12 close to the tibia is set as an arc surface, which is convenient for rotation and installation. One end of the medullary needle 13 is provided with a handle 131, and the medullary needle 13 is vertically fixed at the center of the length direction of the handle 131 to form a T-shaped structure. The handle 131 is provided with a plurality of grooves for easy handling during use. Among them, the handle 131 is located at the end away from the tibia, and the handle 131 is convenient for inserting the medullary needle 13 into the medullary cavity, so that the process of inserting the medullary needle 13 into the medullary cavity is more stable.

Referring to Fig. 1 and Fig. 3, the tibial valgus-valgus adjustment assembly 3 includes a slider 31 arranged on the side of the cylindrical block 122 away from the square block 121, and a sliding block 31 mounted on the side of the square block 121 away from the fixed plate 112. The angle plate 32, the slider 31 and the peripheral surface of the angle plate 32 are fitted together, the slider 31 is sleeved on the medullary needle 13 and the slider 31 is slidably set, and the end of the slider 31 close to the angle plate 32 is provided with a first positioning block 311. Optionally, the first positioning block 311 is triangular, and a plurality of first positioning grooves 321 are evenly opened on the peripheral surface of the angle plate 32 according to the angle. It is clamped in the corresponding first positioning groove 321, so as to achieve the function of fixing after adjusting the angle.

With reference to Fig. 2, angle plate 32 is fan-shaped symmetrical structure, and the circle center of angle plate 32 is connected with square piece 121 rotation, is provided with limit column near the fixed plate 112 of angle plate 32 sides, and limit column is arranged on fixed plate 112 near angle On one side of the plate 32 and the range adapts to the scope of the angle plate 32, the angle bisector of the angle plate 32 is a zero reticle, and the angle range of both sides of the zero reticle is 0-11 °, and the scale on the angle plate 32 of the front view reflects Given the specific angle of valgus and valgus, the angle of valgus and valgus is generally ±10° to meet clinical needs, so the angle range of the angle plate 32 can fully meet clinical needs, and it is more convenient for precise adjustment. The end of the slider 31 away from the cylindrical block 122 is affixed with a reinforcing plate 312, and the reinforcing plate 312 acts as a handle 131 to facilitate moving the slider 31 towards a direction away from the tibia during the operation to avoid losing hands.

1 and 3, the tibial retroversion adjustment assembly 4 includes a retroversion block 41 arranged above the fixation block 11 and fitted with the fixation block 11, and used in conjunction with the retroversion block 41 and installed on the fixation block 11 for use. The reclining adjustment block 42 is used to limit the reclining block 41 . The backward tilt block 41 includes a base 411 that fits on the side of the fixed block 11 away from the tibia, and a positioning rod 412 that is arranged on the side of the base 411 away from the tibia and is vertically fixed to the base 411. The end of the positioning rod 412 is disposed away from the base 411 There is a second positioning block 413 . The reclining adjustment block 42 includes a rotating part 421 and a moving part 422 , and the rotating part 421 is rotatably mounted on the side adjacent to the installation angle plate 32 of the fixed block 11 .

3 and 4, the rotating part 421 and the moving part 422 are vertically arranged, the rotating part 421 and the moving part 422 are integrally formed, and the end surface of the rotating part 421 away from the moving part 422 is uniformly provided with a plurality of second positioning grooves according to the angle 423, the second positioning groove 423 near one end of the rotating part 421 is the zero mark line, the angle range of the rotating part 421 is 0-8°, after the reclining angle is adjusted, the reclining block 41 is moved away from the tibia direction, the base 411 is also away from the fixed block 11, and the positioning block moves away from the tibia. When the rotating part 421 is rotated, the moving part 422 will move according to the rotation angle of the rotating part 421. After the adjustment, release the reclining card. Block 41, so that the positioning block is clamped in the second positioning groove 423 corresponding to the adjusted angle, so as to realize the fixation of the caster angle, and the scale of the rotating part 421 can fully meet the clinical needs. The base 411 extends toward the side away from the tibia and is provided with a reclining baffle 43, and the position of the fixed block 11 corresponding to the reclining baffle 43 is provided with a receding stop 44 directly above the reclining baffle 43, and the reclining card When the block 41 was lifted away from the side of the tibia, the reclining block 44 blocked the distance that the reclining baffle 43 moved away from the direction of the tibia, so that the movement of the reclining block 41 was controlled between the reclining block 44 and the reclining baffle. Within the range of distance between 43, the time wasted due to the excessively long moving distance is avoided, and at the same time, it is convenient for quick operation during the operation.

Referring to FIG. 1 , the tibial osteotomy assembly 2 includes a tibial positioner 21 , a mounting rod 22 affixed to the side of the tibial positioner 21 facing the tibia, and a tibial osteotomy guide 23 sleeved on the mounting rod 22 . The tibia locator 21 is provided with a relief opening 211 at one end facing the fixed block 11, the fixed block 11 is located in the relief opening 211, the moving part 422 is slidably arranged on the tibial locator 21, and the installation rod 22 is arranged far away from the relief opening. 211 is facing the side, and the mounting rod 22 is vertically fixed to the tibial positioner 21, the setting of the relief port 211 can reduce the volume of the device, and it is more space-saving and convenient when performing osteotomy. When the rotating part 421 After rotation, the moving part 422 slides a corresponding distance on the tibial positioner 21 according to the rotation angle of the rotating part 421 , which is convenient for operation. There are two tibial osteotomy guides 23 corresponding to the left and right tibias of the human body. The two tibial osteotomy guides 23 are symmetrical in structure and can be replaced according to the actual situation of the operation. The tibial osteotomy guide 23 is also provided with a wrench 231 that fixes the tibial osteotomy guide 23 on the mounting rod 22, and the tibial osteotomy guide 23 can adjust the distance of 2 mm up and down on the mounting rod 22 according to the operation requirements. After the position of the tibial osteotomy guide 23 is adjusted, the tibial osteotomy guide 23 is fixed on the mounting rod 22 through the handle 131 to facilitate osteotomy.

The implementation principle of the embodiment of the present application is: during the operation, first open a hole in the tibia for installing the medullary needle 13, insert the medullary needle 13 through the medullary needle block 12 into the medullary cavity, and lift the slider in the direction away from the tibia 31. Adjust the valgus angle, loosen the slider 31 so that the first positioning block 311 is engaged in the first positioning groove 321 to fix the adjusted valgus angle, and lift the retroverting block 41 away from the tibia , adjust the reclining angle, loosen the reclining block 41 so that the second positioning block 413 is engaged in the second positioning groove 423 to fix the adjusted reclining angle, adjust the tibial osteotomy guide 23 on the mounting rod 22 position, the tibial osteotomy guide 23 is fixed on the mounting rod 22 by a wrench 231 to facilitate osteotomy.

All of the above are preferred embodiments of the application, and are not intended to limit the protection scope of the application. Therefore, all equivalent changes made according to the structure, shape, and principle of the application should be covered by the protection scope of the application. Inside.

Claims (10)

1. A multifunctional fine-tuning tibial medullary canal positioning osteotomy device, characterized in that it comprises: The tibial medullary canal positioning assembly (1) includes a fixation block (11) abutting against the end of the tibia away from the ankle, a medullary needle block (12) pierced on the fixation block (11), and a medullary needle block (12) pierced on the medullary needle The center of the block (12) is used to insert the medullary needle (13) in the medullary cavity; The tibial osteotomy assembly (2), the tibial positioner (21), the mounting rod (22) fixed on the side of the tibial positioner (21) facing the tibia, and the mounting rod (22) The tibial osteotomy guide (23) on the upper; The tibial valgus-valgus adjustment assembly (3) includes a slider (31) arranged on the side of the medullary needle block (12) away from the tibia and sleeved on the medullary needle (13), and a rotating assembly The angle plate (32) on the fixed block (11) and the peripheral surface is attached to the slider (31), the slider (31) and the angle plate (32) are adjusted at different angles The angle of the valgus and valgus of the tibial osteotomy guide (23); The tibial reclining angle adjustment assembly (4) includes a reclining block (41) disposed above the fixing block (11) and fitted to the fixing block (11), and a reclining block (41) ) is used in conjunction with the reclining adjustment block (42) installed on the fixed block (11) to limit the reclining block (41), and the reclining adjustment block (42) is provided with an angle Scale, described retroversion block (41) and described retroversion adjustment block (42) have the angle of the retroversion angle of adjustment tibial osteotomy guide (23) at the different positions of angle scale fit; Wherein, the slider (31) and the backward tilting block (41) are both slidably arranged on the medullary needle (13), and the slider (31) and the backward tilting block (41) are directed away from After sliding in the direction of the tibia, adjust the valgus and retroversion angles, and slide the slider (31) and the retroversion block (41) towards the direction of the tibia until they are respectively in contact with the angle plate (32) and the posterior inclination. Tilting adjustment block (42) fits fixed position. 2. The multifunctional fine-tuning tibial medullary canal positioning osteotomy device according to claim 1, characterized in that: a first positioning block ( 311), the peripheral surface of the angle plate (32) is evenly opened with a plurality of first positioning grooves (321) according to the angle, and the first positioning block (311) is snapped into the first positioning groove corresponding to one of the angles. in a positioning slot (321). 3. The multifunctional fine-tuning tibial medullary cavity positioning osteotomy device according to claim 2, characterized in that: the angle plate (32) is a symmetrical structure, and the angle bisector of the angle plate (32) is a zero reticle, And the angle range of both sides of the zero reticle is 0-11°. 4. The multifunctional fine-tuning tibial medullary canal positioning osteotomy device according to claim 1, characterized in that: the backward tilting block (41) includes a base (411) that fits closely with the fixing block (11) , and the positioning rod (412) arranged on the side of the base (411) away from the tibia, the end of the positioning rod (412) away from the base (411) is provided with a second positioning block (413), the rear The tilt adjustment block (42) includes a rotating part (421) and a moving part (422), and the end surface of the rotating part (421) away from the end of the moving part (422) is uniformly provided with a plurality of second positioning grooves according to the angle (423), the positioning block is clamped in the second positioning slot (423) corresponding to one of the angles. 5. The multifunctional fine-tuning tibial medullary canal positioning osteotomy device according to claim 4, characterized in that: the second positioning groove (423) near one end of the rotating part (421) is a zero reticle, and the rotating part (421) The angular range of the portion (421) is 0-8°. 6. The multifunctional fine-tuning tibial medullary canal positioning osteotomy device according to claim 5, characterized in that: the tibial locator (21) is provided with a relief opening (211) towards one end of the fixation block (11) , the fixed block (11) is located in the relief opening (211), the moving part (422) is slidably disposed on the tibial positioner (21), and the mounting rod (22) is disposed far away from the The side towards which the mouth for giving way (211) is facing. 7. The multi-functional fine-tuning tibial medullary canal positioning osteotomy device according to claim 4, characterized in that: one end of the base (411) close to the installation rod (22) is extended toward the side away from the tibia. For the reclining baffle (43), the fixed block (11) is provided with a reclining stop (44) directly above the reclining baffle (43) corresponding to the position of the reclining baffle (43). The multifunctional fine-tuning tibial medullary canal positioning osteotomy device according to claim 1, characterized in that: a reinforcement plate (312) is provided on the outer wall of the end of the slider (31) away from the tibia. 9. The multifunctional fine-tuning tibial medullary cavity positioning osteotomy device according to claim 1, characterized in that: a handle (131) is provided at the end of the medullary needle (13) away from the tibia. 10. The multifunctional fine-tuning tibial medullary canal positioning osteotomy device according to claim 1, characterized in that: said tibial osteotomy guide (23) is provided with said tibial osteotomy guide (23) fixed on A wrench (231) on the mounting rod (22).