Arc osteotomy tool for femoral condyle

Abstract

The femoral condyle arc-shaped osteotomy tool comprises symmetrical fixing plates, arc-shaped through grooves are formed in the peripheries of the fixing plates, stable through grooves parallel to the arc-shaped through grooves are formed in the middles of the fixing plates, and a guide rod is arranged between the fixing plates in a sliding fit mode; the two ends of the saw shaft are in sliding fit with the arc-shaped through grooves in the two sides respectively, penetrate through the arc-shaped through grooves and are fixedly connected with operating rods, one end of the operating rod on one side is rotationally connected with the center of the fixing plate, and the other end of the operating rod on one side is fixedly connected with a handle. The two ends of the guide rod penetrate through the outer edge of the fixing plate and are fixedly connected with the corresponding operating rods. The device is simple in structure, an osteotomy tool can be fixed and soft tissue can be expanded through the clamping plates and the supporting plates on the two sides of the sleeve, surgical operation is facilitated, meanwhile, splashing of chippings can be shielded through the baffles, the joint infection risk is reduced, and the chipping cleaning difficulty of the surgery is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of medical instruments, in particular to a femoral condyle arc osteotomy tool. Background Art

[0002] Femoral condyle osteotomy is a surgery used to treat paralysis and deformity of the thigh and knee. The surgery aims to correct the deformity of the knee joint by osteotomy and repositioning the femoral condyle, and improve the patient's knee joint function and gait. In the field of medical devices, with the rapid development of materials science, manufacturing technology and biomedical engineering, various new osteotomy tools continue to emerge. The design of the femoral condyle arc osteotomy tool is based on the anatomical structure and mechanical properties of the femoral condyle. By simulating the natural curvature of the femoral condyle, a more precise and fitting osteotomy operation can be achieved.

[0003] The new femoral condyle arc osteotomy tool is able to achieve natural arc cutting of the femoral condyle, but due to the limitation of the surgical site, the existing tool is still fixed by using the conical parts on the surface of the plate-like clamp to clamp on both sides of the bone condyle, while ignoring the support of the soft tissue on both sides of the bone condyle. In addition, the conical parts are prone to cause secondary damage to the side of the bone ankle during the clamping process, and the debris generated during the osteotomy process is easy to fall onto the surface of the tibial joint, making cleaning more difficult and increasing the risk of surgical infection.

[0004] Therefore, it is necessary to propose a femoral condyle arc osteotomy tool that can gently fix the osteotomy tool and support the outer soft tissue to facilitate surgical operation, and can adaptively shield cutting debris to prevent contamination of the deep part of the joint. Summary of the invention

[0005] In order to solve the above problems, the purpose of the present invention is to provide a femoral condyle arc osteotomy tool, which can fix the osteotomy tool and support the soft tissue through the splints and support plates on both sides of the sleeve, thereby facilitating surgical operations. At the same time, it has a baffle that can block the splash of debris, reduce the risk of joint infection, and reduce the difficulty of cleaning debris during surgery.

[0006] In order to achieve the above-mentioned purpose, the technical scheme of the present invention is as follows: a femoral condyle arc osteotomy tool, comprising a symmetrical fixing plate, the outer circumference of the fixing plate is provided with an arc through groove, the middle part of the fixing plate is provided with a stable through groove parallel to the arc through groove, a guide rod is slidably matched between the fixing plates, the guide rod is rotatably connected to a saw shaft on one side toward the center of the fixing plate, both ends of the saw shaft are respectively slidably matched with the arc through grooves on both sides, both ends of the saw shaft pass through the arc through groove and are fixedly connected with a joystick, the middle part of the joystick is connected with a slider, the slider is slidably matched with the corresponding stable through groove, one end of the joystick on one side close to the fixing plate is rotatably connected to the center of the corresponding fixing plate, the other end extends beyond the fixing plate and is fixedly connected with a handle, both ends of the guide rod pass through the outer edge of the fixing plate and are fixedly connected to the corresponding joystick;

[0007] The fixed plates are all rotatably fitted with sleeves, and the operating rods are rotatably connected to the corresponding sleeves. The sleeves extend through the fixed plates to both sides of the fixed plates, and the sleeves located on the inner side of the fixed plates are threadedly fitted with clamping bolts, and the clamping plates are fixedly connected on the sides of the clamping bolts away from the fixed plates, and the sleeves located on the outer side of the fixed plates are threadedly fitted with supporting bolts, and the supporting bolts are fixedly connected to the supporting arc plates at the ends away from the fixed plates, and the operating wheels are fixedly sleeved on the sleeves on the outer side of the fixed plates, and a number of telescopic rods are fixedly connected between the clamping plates and the fixed plates.

[0008] The principle of the basic solution: The saw shaft slides with the fixed plate through the arc-shaped slot, and the guide rod ensures the stability of the saw shaft during the sliding process. The design of the joystick and the handle allows the doctor to easily control the movement of the saw shaft to perform osteotomy. The splint can easily fix the osteotomy tool through the threaded cooperation of the splint bolt and the sleeve. The support arc plate can adjust the force of the soft tissue through the threaded cooperation of the support bolt and the sleeve to ensure a clear surgical field of view.

[0009] The beneficial effects of the basic scheme are: 1. The saw shaft ensures stable movement of the saw shaft during osteotomy through the sliding cooperation between the arc-shaped through groove and the fixing plate, as well as the guidance of the guide rod, so as to achieve accurate cutting that fits the natural shape of the femoral condyle.

[0010] 2. The design of the splint and supporting arc plate enables the osteotomy tool to be firmly fixed on the femoral condyle, while stretching the surrounding soft tissue, providing the doctor with a clear surgical field of view and reducing the risk of accidental injury to surrounding tissues.

[0011] 3. The combination of the joystick and the handle allows the doctor to easily control the movement of the saw shaft without the assistance of additional assistants, thereby simplifying the surgical process and shortening the operation time.

[0012] 4. Precise osteotomy operation and low infection risk help reduce postoperative complications, such as joint stiffness, infection, etc., thereby improving the patient's surgical satisfaction and quality of life. The osteotomy tool of the present invention has a reasonable design, a compact structure, and is easy to disassemble and clean, which helps reduce postoperative debris residue and reduces cleaning difficulty and cost.

[0013] Furthermore, an arc-shaped rack is fixedly connected to the outer side of the fixed plate, the arc-shaped rack is parallel to the arc-shaped through groove and faces the outer edge of the fixed plate, a baffle is rotatably sleeved on the guide rod, and baffle gears are rotatably sleeved on both ends of the guide rod located on the outer side of the fixed plate, the baffle gears are meshed with the arc-shaped rack and the inner side of the baffle gear is fixedly connected to the baffle.

[0014] The beneficial effects of the basic solution are: 1. The introduction of the baffle directly solves the problem of debris splashing during surgery. When the saw shaft slides in the arc-shaped slot to perform osteotomy, the baffle can effectively block the generated debris and prevent it from splashing onto the surgical area or the doctor, thereby reducing the risk of postoperative infection and protecting the safety of doctors and patients.

[0015] 2. The meshing design of the baffle gear and the arc-shaped rack enables the baffle to automatically adjust its position as the saw shaft moves, always maintaining effective shielding of debris without the need for manual operation by the doctor, thus improving the efficiency and safety of the operation.

[0016] 3. The meshing of the arc-shaped rack and the baffle gear not only realizes the automatic adjustment of the baffle, but also enhances the structural stability of the entire tool. This design forms a stable connection system between the fixing plate, guide rod, baffle and other components, which helps to maintain the stability and accuracy of the tool during surgery.

[0017] 4. Since the baffle can automatically adjust its position, the doctor does not need to be distracted to adjust the baffle during the operation, so he can focus more on the operation itself, improving the efficiency and success rate of the operation. At the same time, this design also reduces the steps that need to be manually operated during the operation, making the entire operation process smoother and more convenient.

[0018] Furthermore, the threads of the cleat bolt and the support bolt within the same sleeve are opposite.

[0019] The beneficial effects of the basic scheme are: 1. The design of opposite threads means that the sleeve can extend or retract the bolts on both sides at the same time when rotating. When the doctor fixes the osteotomy tool, he can rotate the sleeve to extend the bolts on both sides outward, thereby simplifying the operation steps and improving the convenience of operation.

[0020] 2. Through the design of opposite-threaded bolts, the splint and support arc plate can be more firmly fixed to the sleeve, reducing the risk of tool failure caused by loose bolts. This design increases the overall stability of the tool and ensures that it can maintain a stable operating state during surgery.

[0021] 3. The reverse thread bolt design enables doctors to adjust the tool status more quickly during surgery, reducing the time wasted on adjusting the tool, thereby improving the efficiency of the surgery. At the same time, the stable tool structure and flexible adjustment capabilities also help reduce surgical risks and improve surgical safety.

[0022] 4. After the operation, the opposite thread bolt design makes it easier to remove the splint and support arc plate from the sleeve for cleaning and maintenance. This design helps reduce post-operative debris residue and bacterial growth, keeping the tools clean and hygienic.

[0023] Furthermore, the thread pitches of the support bolt and the corresponding sleeve are both greater than the thread pitch of the clamping bolt.

[0024] The beneficial effects of the basic solution are: 1. The thread pitch of the support bolt is larger, which means that at the same rotation angle, the support bolt can produce a larger linear displacement, thereby enhancing the stability of the support arc plate, so that the soft tissue can be better stretched during surgery, providing the doctor with a clear surgical field of view.

[0025] 2. The difference in thread pitch makes the splint bolt and the support bolt have different precision when adjusting. The thread pitch of the splint bolt is smaller, which is convenient for fine-tuning to ensure the precise fixation of the osteotomy tool. The thread pitch of the support bolt is larger. Although the adjustment range is larger, the required support force can also be achieved by rotating the appropriate angle, thus meeting different needs during the operation.

[0026] 3. The difference in thread pitch also helps to optimize the fit between the bolt and the sleeve, reducing wear and loosening. The larger thread pitch of the support bolt can more effectively disperse stress, reduce friction and wear between the bolt and the sleeve, thereby improving the durability and service life of the tool.

[0027] Furthermore, the surfaces of the supporting arc plates away from the fixed plates are all paved with flexible layers.

[0028] The beneficial effects of the basic solution are: 1. The flexible layer can reduce the friction and discomfort between the support arc plate and the patient's skin. During the operation, the patient often needs to maintain the same posture for a long time. The presence of the flexible layer can effectively alleviate the damage and inflammation caused by long-term compression and improve the patient's postoperative recovery.

[0029] 2. During the operation, the support arc plate may cause a certain amount of pressure on the patient's soft tissue. The flexible layer acts as a buffer to disperse and reduce this pressure, thereby reducing the risk of soft tissue damage.

[0030] 3. The flexible layer not only provides comfort and protection, but also enhances the stability of the tool to a certain extent. Since the flexible layer has a certain elasticity and viscosity, it can better fit the patient's soft tissue and reduce the shaking caused by movement, thereby ensuring the stability and accuracy of the osteotomy tool during surgery.

[0031] Furthermore, the surfaces of the clamping plates away from the fixing plates are all paved with elastic friction layers.

[0032] The beneficial effects of the basic solution are: 1. The elastic friction layer can increase the friction between the splint and the patient's bones, thereby more effectively fixing the splint and preventing it from sliding or shifting during surgery. This ensures the accuracy and stability of the osteotomy tool and helps doctors perform precise osteotomy operations.

[0033] 2. The elastic friction layer is usually made of soft and elastic materials, such as medical grade silicone or rubber. These materials can reduce the direct pressure and friction of the splint on the patient's bones, thereby reducing the possibility of secondary injury.

[0034] 3. The elastic friction layer not only provides friction, but also acts as a buffer. It can disperse the pressure of the splint on the patient's bones and reduce bone damage caused by concentrated pressure. This is especially important for patients who need to maintain a fixed posture for a long time.

[0035] Furthermore, the baffle plate extends to the outer edge of the arc-shaped slide groove and one side away from the fixed plate is longer than the other side.

[0036] The benefits of the basic solution are: 1. The longer side of the baffle can more effectively block the debris generated during the operation, preventing the debris from falling into the deep joint and increasing the difficulty of cleaning. As the saw shaft slides in the arc-shaped slide to perform osteotomy, the debris tends to splash in the opposite direction of the saw shaft. Therefore, the baffle is designed to be longer on the side away from the fixed plate than on the other side, which can ensure that the debris is completely blocked within the baffle to prevent it from splashing onto the surgical area or the doctor.

[0037] 2. The shorter side of the baffle is close to the fixed plate, which will not block the doctor's sight too much. This helps the doctor to clearly observe the osteotomy site and the progress of the operation during the operation, so as to perform more precise operations.

[0038] 3. The design of the baffle also helps to enhance the structural stability of the entire osteotomy tool. Since a stable connection is formed between the baffle, the fixing plate and the arc-shaped slide, it helps to reduce the errors and risks caused by the shaking of the tool during the operation.

[0039] Furthermore, a plurality of saw teeth of equal length are vertically fixedly connected to the outer periphery of the saw shaft.

[0040] The benefits of the basic solution are: 1. The equal length of the saw teeth ensures that when the saw shaft rotates, each saw tooth can contact the osteotomy site at the same speed and force, thereby improving the efficiency of osteotomy. This evenly distributed saw tooth design helps to reduce the vibration and shaking of the saw shaft during the osteotomy process, making the osteotomy operation smoother and more accurate.

[0041] 2. Because the saw teeth are of equal length, they can maintain a consistent cutting depth during osteotomy, thereby improving the accuracy of osteotomy and ensuring the smoothness of the bone cutting surface. This design helps doctors perform precise osteotomy during surgery and reduces errors and unnecessary injuries.

[0042] 3. When the same length of saw teeth is subjected to the same pressure and friction, these forces can be distributed more evenly, thereby reducing the wear of individual saw teeth. This design helps to extend the service life of the saw teeth, reduce the frequency of saw tooth replacement, and reduce surgical costs.

[0043] 4. The equal length of the saw teeth makes the saw shaft rotate more smoothly and evenly, which helps the doctor better control the position and angle of the saw shaft during the operation. This design improves the convenience of operation, allowing the doctor to focus more on the operation itself and reduce errors and risks caused by inconvenient operation.

[0044] Furthermore, one end of the guide rod is fixedly connected to the cutting motor, and the end of the saw shaft away from the handle is coaxially fixedly connected to the output shaft of the cutting motor.

[0045] The beneficial effects of the basic solution are: 1. The cutting motor directly drives the saw shaft to rotate through the output shaft, so that the saw shaft can perform osteotomy at a higher speed and more stable power. This design significantly improves osteotomy efficiency, shortens operation time, and reduces patient pain and surgical risks.

[0046] 2. Since the cutting motor is coaxially fixedly connected to the saw shaft, the stability and accuracy of the saw shaft during rotation are ensured. This design helps doctors perform precise osteotomy operations during surgery, reduces errors and unnecessary injuries, and improves the success rate of surgery.

[0047] 3. The cutting motor is fixedly connected to the guide rod, making the structure of the entire osteotomy tool more compact and stable. Doctors can operate and control the tool more conveniently during surgery, reducing the difficulty and risk of operation caused by shaking or instability of the tool.

[0048] Furthermore, a collecting bag is sleeved on one side of the baffle away from the fixing plate.

[0049] The beneficial effects of the basic solution are: 1. During osteotomy, a large amount of bone debris and other tissue debris will be generated. If these debris are not collected in time, they may splash into the surgical area, increasing the risk of surgery and infection. The collection bag sleeved on the side of the baffle away from the fixed plate can effectively collect these debris and prevent them from splashing into the surgical area or the doctor.

[0050] 2. The use of the collection bag helps keep the surgical area clean and tidy. By collecting debris in a timely manner, the contamination of the surgical area can be reduced and the risk of postoperative infection can be reduced. The design of the collection bag makes postoperative treatment easier and more convenient. The doctor can easily remove the collection bag, pour the debris into the waste container, and then clean and disinfect it. This helps to reduce the time and difficulty of postoperative cleaning work and improve work efficiency.

[0051] 3. The splash of debris will not only pollute the surgical area, but may also cause accidental harm to patients and doctors. The collection bag attached to the baffle can effectively block the splash of debris and protect patients and doctors from harm. By effectively collecting debris, the design of the collection bag helps reduce the number of interruptions and cleanups during surgery, thereby improving surgical efficiency. Doctors can focus more on the surgical operation itself, reducing the extended operation time and patient pain caused by debris problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 It is an axonometric view of the femoral condyle arc osteotomy tool in an embodiment of the present invention.

[0053] Figure 2 It is a side view of the femoral condyle arc osteotomy tool in an embodiment of the present invention.

[0054] Figure 3 1 is a top view of the femoral condyle arc osteotomy tool in an embodiment of the present invention. DETAILED DESCRIPTION

[0055] The following is further described in detail through specific implementation methods:

[0056] The figure marks in the drawings of the specification include: 1. fixed plate; 2. arc-shaped slide groove; 3. stable slide groove; 4. clamping plate; 5. telescopic rod; 6. supporting arc plate; 7. slider; 8. cutting motor; 9. saw shaft; 10. baffle gear; 11. baffle; 12. guide rod; 13. handle; 14. arc-shaped rack; 15. joystick; 16. sleeve; 17. control wheel.

[0057] Example 1

[0058] Basically as attached Figure 1 , Figure 2 and Figure 3 As shown: a femoral condyle arc osteotomy tool, comprising a symmetrical fixing plate 1, the outer circumference of the fixing plate 1 is provided with an arc through groove, the middle part of the fixing plate 1 is provided with a stable through groove parallel to the arc through groove, a guide rod 12 is slidably fitted between the fixing plates 1, and a saw shaft 9 is connected with a pin on the side of the guide rod 12 facing the center of the fixing plate 1, and two ends of the saw shaft 9 are respectively slidably fitted with the arc through grooves on both sides, both ends of the saw shaft 9 pass through the arc through groove and are connected with a joystick 15 by a pin, a slider 7 is welded to the middle part of the joystick 15, and the slider 7 is slidably fitted with the corresponding stable through groove, one end of the joystick 15 on one side close to the fixing plate 1 is connected with a pin at the center of the corresponding fixing plate 1, and the other end extends beyond the fixing plate 1 and is welded with a handle 13, both ends of the guide rod 12 pass through the outer edge of the fixing plate 1 and are welded with the corresponding joystick 15, one end of the guide rod 12 is welded with a cutting motor 8, and the end of the saw shaft 9 away from the handle 13 is coaxially welded with the output shaft of the cutting motor 8, and a plurality of saw teeth of equal length are vertically welded to the outer circumference of the saw shaft 9.

[0059] The fixed plate 1 is rotatably fitted with a sleeve 16, and the operating rods 15 are rotatably sleeved with the corresponding sleeves 16. The sleeves 16 extend through the fixed plate 1 to both sides of the fixed plate 1, and the sleeves 16 located on the inner side of the fixed plate 1 are threadedly fitted with a clamping bolt, and a clamping plate 4 is welded on the side of the clamping bolt away from the fixed plate 1, and the sleeves 16 located on the outer side of the fixed plate 1 are threadedly fitted with a supporting bolt, and a supporting arc plate 6 is welded on the end of the supporting bolt away from the fixed plate 1, and the surface of the clamping plate 4 away from the fixed plate 1 is paved with an elastic friction layer, and the surface of the supporting arc plate 6 away from the fixed plate 1 is paved with a flexible layer, the threads of the clamping bolt and the supporting bolt in the same sleeve 16 are opposite, and the thread pitch of the supporting bolt and the corresponding sleeve 16 is greater than the thread pitch of the clamping bolt, and an operating wheel 17 is fixedly sleeved on the sleeve 16 on the outer side of the fixed plate 1, and a plurality of telescopic rods 5 are welded between the clamping plate 4 and the fixed plate 1.

[0060] The specific implementation process is as follows: during the femoral condyle osteotomy operation, the dissected soft tissue is turned to both sides of the bone condyle, and the doctor needs to clamp the osteotomy tool on both sides of the femoral condyle, and adjust the angle of the tool so that the arc-shaped slide groove 2 is located outside the wound, and the sleeve 16 is rotated by the operating wheel 17 while the splint bolts are extended to clamp the osteotomy tool on both sides of the femoral condyle. The elastic friction layer can avoid secondary damage to both sides of the femoral condyle while maintaining sufficient clamping friction force. At the same time, the sleeve 16 on the outside of the fixing plate 1 pushes the supporting arc plate 6 to open the soft tissues on both sides to avoid affecting the surgical process. When the sleeve is rotated, the difference in pitch of the two bolts ensures the clamping accuracy of the splint 4 and the opening distance of the supporting arc plate 6. The splint bolt with a smaller pitch can finely adjust the clamping force of the splint 4, while at the same time, the supporting bolt with a larger pitch is extended longer to ensure support for the soft tissue. The flexible layer on the surface of the supporting arc plate 6 can gently contact the soft tissue to reduce shaking and damage to the soft tissue.

[0061] After the osteotomy tool is fixed, the cutting motor 8 is turned on to drive the saw shaft 9 to rotate, and the joystick 15 and the saw shaft 9 are pulled by holding the handle 13 to cut the femoral condyle downward along the arc-shaped slide 2. The cutting route is a perfect arc surface, which is more in line with the natural shape of the femoral condyle, and the saw teeth of equal height on the rotating saw shaft 9 ensure the flatness of the cutting surface, providing a stable attachment surface for the next step of installing the artificial prosthesis, and enhancing the smoothness of the operation. After the cutting is completed, the cutting motor 8 is turned off, and the splint 4 is loosened and the supporting arc plate 6 is retracted by rotating the sleeves 16 on the fixing plates 1 on both sides, so that the osteotomy tool can be conveniently removed to reduce the possibility of accidents during the operation.

[0062] Example 2

[0063] The difference from the above embodiment is that, as shown in the attached Figure 1 , Figure 2 and Figure 3As shown: arc-shaped racks 14 are welded on the outside of the fixed plate 1, the arc-shaped racks are parallel to the arc-shaped through groove and face the outer edge of the fixed plate 1, a baffle 11 is rotatably sleeved on the guide rod 12, and baffle gears 10 are rotatably sleeved on both ends of the guide rod 12 located on the outside of the fixed plate 1, the baffle gears 10 are meshed with the arc-shaped racks 14 and the inner sides of the baffle gears 10 are welded to the baffles 11, the baffles 11 extend to the outer edge of the arc-shaped slide groove 2 and the side away from the fixed plate 1 is longer than the other side, and a collecting bag is sleeved on the side of the baffle 11 away from the fixed plate 1.

[0064] The specific implementation process is as follows: During the cutting process, the debris generated by osteotomy may be raised to interfere with the doctor's vision, or may enter the deep joint between the femur and tibia, increasing the difficulty of surgical operation and cleaning. The baffle 11 sleeved on the guide rod 12 can prevent the debris from splashing over a long distance and collect the splashed debris into a collection bag, reducing surgical interference and increasing the chance of success.

[0065] When the joystick 15 moves from top to bottom, the baffle gear 10 is meshed and rotated by the arc-shaped rack 14, so that the vertically adapted baffle 11 is gradually laid flat, which is more convenient for collecting debris and reduces the line of sight obstruction of the wound position. Finally, the baffle 11 is laid flat on the tibial joint surface, and the debris is guided into the collection bag to avoid secondary damage to the tibial articular cartilage caused by the impact of the debris. At the same time, the debris is prevented from entering the deep part of the joint, reducing the difficulty of cleaning the debris, thereby shortening the operation time and improving the speed of postoperative healing.

[0066] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0067] The above is only an embodiment of the present invention. The common sense such as the known specific structure and characteristics in the scheme is not described in detail here. The ordinary technicians in the relevant field know all the common technical knowledge in the technical field of the invention before the application date or priority date, can obtain all the existing technologies in the field, and have the ability to apply the conventional experimental means before that date. The ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, which will not affect the effect of the implementation of the present invention and the practicality of the patent. The protection scope required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A femoral condyle arc osteotomy tool, characterized in that: The invention comprises a symmetrical fixing plate (1), wherein the outer circumference of the fixing plate (1) is provided with an arcuate through groove, and the middle of the fixing plate (1) is provided with a stabilizing through groove parallel to the arcuate through groove, and a guide rod (12) is slidably matched between the fixing plates (1), and the guide rod (12) is rotatably connected to a saw shaft (9) on one side facing the center of the fixing plate (1), and the two ends of the saw shaft (9) are respectively slidably matched with the arcuate through grooves on both sides, and the two ends of the saw shaft (9) pass through the arcuate through groove and are fixedly connected to a joystick (15), and the middle of the joystick (15) is connected to a slider (7), and the slider (7) is slidably matched with the corresponding stabilizing through groove, and one end of the joystick (15) on one side is rotatably connected to the center of the corresponding fixing plate (1), and the other end extends beyond the fixing plate (1) and is fixedly connected to a handle (13), and the two ends of the guide rod (12) pass through the outer edge of the fixing plate (1) and are fixedly connected to the corresponding joystick (15); The fixing plate (1) is rotatably matched with a sleeve (16), and the operating rod (15) is rotatably connected to the corresponding sleeve (16). The sleeve (16) passes through the fixing plate (1) and extends to both sides of the fixing plate (1). The sleeve (16) located on the inner side of the fixing plate (1) is threadedly matched with a clamping bolt, and the side of the clamping bolt away from the fixing plate (1) is fixedly connected with the clamping plate (4). The sleeve (16) located on the outer side of the fixing plate (1) is threadedly matched with a supporting bolt, and the end of the supporting bolt away from the fixing plate (1) is fixedly connected with a supporting arc plate (6). The sleeve (16) on the outer side of the fixing plate (1) is fixedly sleeved with an operating wheel (17), and a plurality of telescopic rods (5) are fixedly connected between the clamping plate (4) and the fixing plate (1).

2. The femoral condyle arc osteotomy tool according to claim 1, characterized in that: The outer side of the fixed plate (1) is fixedly connected with an arc-shaped rack (14), the arc-shaped rack is parallel to the arc-shaped through groove and faces the outer edge of the fixed plate (1), a baffle (11) is rotatably sleeved on the guide rod (12), and both ends of the guide rod (12) located on the outer side of the fixed plate (1) are rotatably sleeved with a baffle gear (10), the baffle gear (10) is meshed with the arc-shaped rack (14), and the inner side of the baffle gear (10) is fixedly connected with the baffle (11).

3. The femoral condyle arc osteotomy tool according to claim 2, characterized in that: The threads of the clamping bolt and the supporting bolt in the same sleeve (16) are opposite.

4. The femoral condyle arc osteotomy tool according to claim 3, characterized in that: The thread pitches of the support bolt and the corresponding sleeve (16) are both greater than the thread pitch of the clamping bolt.

5. The femoral condyle arc osteotomy tool according to claim 4, characterized in that: The surfaces of the supporting arc plates (6) away from the fixed plates (1) are all paved with flexible layers.

6. The femoral condyle arc osteotomy tool according to claim 5, characterized in that: The surfaces of the clamping plates (4) away from the fixing plate (1) are all paved with elastic friction layers.

7. The femoral condyle arc osteotomy tool according to claim 6, characterized in that: The baffle plate (11) extends to the outer edge of the arc-shaped slide groove (2) and the side away from the fixed plate (1) is longer than the other side.

8. The femoral condyle arc osteotomy tool according to claim 7, characterized in that: A plurality of saw teeth of equal length are vertically fixedly connected to the outer periphery of the saw shaft (9).

9. The femoral condyle arc osteotomy tool according to claim 8, characterized in that: One end of the guide rod (12) is fixedly connected to a cutting motor (8), and one end of the saw shaft (9) away from the handle (13) is coaxially fixedly connected to the output shaft of the cutting motor (8).

10. The femoral condyle arc osteotomy tool according to claim 9, characterized in that: A collecting bag is sleeved on one side of the baffle plate (11) away from the fixing plate (1).

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