Surgical tool

Abstract

The present invention provides a surgical tool for orthopedic surgery. The surgical tool includes: a cutting device for cutting the femur; and a prosthesis template for connecting with the femur. The prosthesis template includes a first positioning component and a second positioning component. The first positioning component is positioned on the femur so that the cutting device moves relative to the first positioning component to cut the femur. After the femur is cut, the second positioning component is connected to the first positioning component to replace the femoral condyle prosthesis and be positioned on the femur. The surgical tool of the present invention solves the problem of low success rate of artificial knee joint replacement surgery in the prior art.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and more particularly, to a surgical tool. Background Art

[0002] With the wide application and continuous development of artificial knee joint replacement surgery, doctors have increasingly higher requirements for the accuracy during the knee joint replacement surgery process. In order to accurately place artificial joint prostheses and improve the success rate of the surgery, artificial knee joint replacement surgery not only requires advanced and precise surgical tool designs to ensure and improve the surgical fluency and accuracy, but also requires minimizing the number of surgical tools for artificial joint replacement to reduce the cumbersome instrument operations and instrument switching during the surgery. At the same time, it also requires the surgical instruments to be as light as possible and clearly marked to reduce the doctor's labor intensity and reduce misoperations.

[0003] During artificial knee joint replacement surgery, the accurate placement of the condyle trial mold and the precise osteotomy between the condyles are the keys to ensuring the accurate placement of the artificial femoral condyle prosthesis into the patient's joint and guaranteeing the success of the knee joint surgery.

[0004] Currently, in the prior art, an intercondylar osteotomy guide plate and an intercondylar osteotomy tool are often used to first perform osteotomy on the patient's intercondylar area, and then place the condyle trial mold to observe whether the artificial femoral condyle can be placed in place and whether the femoral side osteotomy is precise. However, the intercondylar osteotomy in the current technology is often inaccurate, and the situation of the intercondylar osteotomy being biased to the left or right often occurs. Moreover, doctors can only discover this situation after placing the condyle trial mold. At this time, the osteotomy cannot be repaired, resulting in the inability to place the artificial femoral condyle in place, reducing the service life of the prosthesis, causing complications, and even leading to surgical failure. At the same time, the intercondylar osteotomy guide plate needs to be designed separately for different models of prostheses, resulting in too many or too heavy surgical tools. And the intercondylar osteotomy tool is often an independent tool. Due to the non-adjustable osteotomy depth, the osteotomy is often insufficient or too deep, damaging the patient's tibial plateau during the intercondylar osteotomy. Summary of the Invention

[0005] The main object of the present invention is to provide a surgical tool to solve the problem of the low success rate of artificial knee joint replacement surgery in the prior art.

[0006] To achieve the above object, the present invention provides a surgical tool for orthopedic surgery. The surgical tool includes: a cutting device for cutting the femur; a prosthesis template for connecting with the femur. Wherein, the prosthesis template includes a first positioning component and a second positioning component. The first positioning component is positioned on the femur to enable the cutting device to move relative to the first positioning component to cut the femur. The second positioning component is connected to the first positioning component after the femur cutting is completed to replace the femoral condyle prosthesis and be positioned on the femur.

[0007] Further, the first positioning component and the second positioning component are detachably connected.

[0008] Further, a positioning groove is provided on the first positioning component, and a positioning slider is provided on the second positioning component. The second positioning component is connected to the positioning groove on the first positioning component through the cooperation of the positioning slider.

[0009] Further, the cutting device includes a cutting knife, the cutting knife is of an arc structure, and the cutting device cuts the femur by rotating the cutting knife.

[0010] Further, the surgical tool further includes: a guiding device, the guiding device is arranged on the prosthesis template, so that the cutting device moves along the guiding direction of the guiding device to cut the femur.

[0011] Further, the guiding device includes: a guiding sleeve assembly, the guiding sleeve assembly is detachably arranged on the prosthesis template, the cutting device includes a guiding body, and the guiding body is movably inserted into the guiding sleeve assembly; wherein, the cutting knife is arranged at one end of the guiding body to cut the femur under the drive of the guiding body.

[0012] Further, the surgical tool further includes: an adjusting device, the adjusting device is arranged on the cutting device to adjust the moving distance of the cutting device relative to the prosthesis template.

[0013] Further, the adjusting device is movably arranged on the cutting device to change the distance from the guiding device by connecting to different positions on the cutting device.

[0014] Further, a plurality of adjusting holes are provided on the cutting device, the plurality of adjusting holes are arranged at intervals along the guiding direction of the guiding device, and the adjusting device can be selectively inserted into the adjusting holes to be connected to the cutting device.

[0015] Further, a stop portion is provided on the adjusting device, and the cutting device drives the adjusting device to move to cut the femur, so that when the stop portion abuts against the guiding device, the cutting device stops cutting the femur.

[0016] The surgical tool applying the technical solution of the present invention is mainly used in knee joint replacement surgery for osteotomy of the intercondylar femoris. This surgical tool realizes the method of first simulating the prosthesis positioning and then performing osteotomy, increasing the adaptability of the prosthesis to the femur after osteotomy and improving the success rate of the surgery. This surgical tool includes a cutting device and a prosthesis template. The prosthesis template simulates the shape of the prosthesis to be implanted in the surgery. It is first positioned at the end of the femur, and then the cutting device cuts the intercondylar femoris to facilitate the subsequent connection of the prosthesis to the femur. During positioning, the first positioning component in the prosthesis template is first positioned at the end of the femur, leaving the space for osteotomy. After the cutting device performs osteotomy, the second positioning component is connected to the first positioning component to simulate the connection of the prosthesis to the femur, thereby avoiding contamination caused by implanting the prosthesis during the surgery. In this way, after the steps unrelated to the prosthesis are completed during the surgery, the real prosthesis can be installed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0018] Figure 1 The assembly schematic diagram of the embodiment of the surgical tool according to the present invention is shown;

[0019] Figure 2 The installation position schematic diagram of the repaired prosthesis and the femur of the surgical tool of the present invention is shown;

[0020] Figure 3 The exploded view of the embodiment of the surgical tool of the present invention is shown;

[0021] Figure 4 The schematic diagram of the embodiment of the first positioning component of the surgical tool of the present invention is shown;

[0022] Figure 5 The schematic diagram of the embodiment of the second positioning component of the surgical tool of the present invention is shown;

[0023] Figure 6 The schematic diagram of the embodiment of the guiding device of the surgical tool of the present invention is shown;

[0024] Figure 7 The sectional view of the embodiment of the guiding device of the surgical tool of the present invention is shown;

[0025] Figure 8 The top view of the embodiment of the adjusting device of the surgical tool of the present invention is shown;

[0026] Figure 9 The schematic diagram of the embodiment of the cutting device of the surgical tool of the present invention is shown;

[0027] Figure 10 Shows an installation schematic diagram of an embodiment of the surgical tool of the present invention.

[0028] Among them, the above-mentioned drawings include the following reference numerals:

[0029] 10. Cutting device; 11. Cutting knife; 12. Guide body; 13. Adjusting hole; 14. Accommodating cavity; 20. Prosthesis template; 21. First positioning component; 211. Positioning groove; 212. Installation groove; 22. Second positioning component; 221. Positioning slider; 30. Guide device; 31. Guide sleeve assembly; 311. Guide sleeve body; 312. Guide sleeve lining; 313. Guide sleeve positioning post; 314. Guide sleeve pin; 315. Guide sleeve lateral positioning pin; 316. Guide sleeve spring; 317. Guide sleeve button; 40. Femur; 50. Adjusting device; 51. Limiting sleeve body; 52. First pin; 53. First spring; 54. Limiting sleeve sliding button; 55. Second pin; 56. Stopping portion; 57. Insertion portion. Detailed implementation manners

[0030] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0031] The present invention provides a surgical tool for orthopedic surgery. Please refer to Figures 1 to 10 , the surgical tool includes: a cutting device 10, the cutting device 10 is used for cutting the femur 40; a prosthesis template 20, the prosthesis template 20 is used for connecting with the femur 40; wherein, the prosthesis template 20 includes a first positioning component 21 and a second positioning component 22, the first positioning component 21 is positioned on the femur 40 so that the cutting device 10 moves relative to the first positioning component 21 to cut the femur 40, and the second positioning component 22 is connected with the first positioning component 21 after the femur 40 is cut, so as to replace the femoral condyle prosthesis and be positioned on the femur 40.

[0032] The surgical tool of the present invention is mainly applied to the femoral intercondylar osteotomy in knee joint replacement surgery. This surgical tool realizes the method of first simulating the prosthesis positioning and then performing osteotomy, which increases the adaptability between the prosthesis and the femur after osteotomy and improves the surgical success rate. The surgical tool includes a cutting device and a prosthesis template. The prosthesis template simulates the shape of the prosthesis to be implanted in the surgery. It is first positioned at the end of the femur, and then the cutting device cuts the femoral intercondylar to facilitate the subsequent connection between the prosthesis and the femur. During positioning, the first positioning component in the prosthesis template is first positioned at the end of the femur, leaving a space for osteotomy. After the cutting device performs osteotomy, the second positioning component is connected to the first positioning component to simulate the connection between the prosthesis and the femur, thereby avoiding contamination caused by the implantation of the prosthesis during the surgery. In this way, after the steps unrelated to the prosthesis are completed during the surgery, the real prosthesis can be installed.

[0033] The first positioning component 21 and the second positioning component 22 are detachably connected. The first positioning component 21 is provided with a positioning groove 211, and the second positioning component 22 is provided with a positioning slider 221. The second positioning component 22 is connected to the positioning groove 211 on the first positioning component 21 through the cooperation of the positioning slider 221.

[0034] As Figure 4 shown, in this embodiment, the first positioning component is provided with an obliquely downward positioning groove 211. The end of the positioning groove is provided with a first opening, and the first opening is in a trumpet shape for the insertion of the second positioning component. The second positioning component is provided with a positioning slider 221 adapted to the positioning groove. There are two positioning grooves and two positioning sliders, which are correspondingly arranged.

[0035] The cutting device 10 includes a cutting knife 11. The cutting knife 11 is in an arc structure. The cutting device 10 cuts the femur 40 by rotating the cutting knife 11.

[0036] In this embodiment, the cutting device 10 is provided with a cutting knife 11 at its end. The cutting knife is annular and is provided with a plurality of cutting teeth, which is equivalent to a circular saw, so as to cut the femoral intercondylar by rotation. The femur cut by the annular cutting knife will not have a right-angle part, which will not cause subsequent bone stress concentration, the structure is more reasonable in force, the service life is extended, and the comfort of the patient is increased.

[0037] Preferably, a receiving cavity 14 is further provided in the cutting device. The receiving cavity is arranged in the guide body to facilitate the temporary storage of the bone fragments cut by the cutting knife.

[0038] The surgical tool further includes: a guiding device 30, which is arranged on the prosthesis template 20, so that the cutting device 10 moves along the guiding direction of the guiding device 30 to cut the femur 40. The guiding device 30 includes: a guiding sleeve assembly 31, which is detachably arranged on the prosthesis template 20. The cutting device 10 includes a guiding body 12, and the guiding body 12 is movably inserted into the guiding sleeve assembly 31; wherein, a cutting knife 11 is arranged at one end of the guiding body 12 to cut the femur 40 under the drive of the guiding body 12.

[0039] In this embodiment, the surgical tool is also provided with a guiding device so that the cutting device can cut the bone along a preset direction, improving the osteotomy success rate and preventing deviation in the osteotomy position. The guiding device 30 includes a guiding sleeve assembly 31, and the guiding sleeve assembly includes a guiding sleeve main body 311 and a guiding sleeve inner lining 312. The guiding sleeve inner lining is sleeved inside the guiding sleeve main body, and both ends of the guiding sleeve inner lining are chamfered to facilitate the entry of the cutting device. The cutting device is inserted into the guiding sleeve inner lining through the guiding body, and the guiding body is a cylinder.

[0040] The surgical tool further includes: an adjusting device 50, which is arranged on the cutting device 10 to adjust the moving distance of the cutting device 10 relative to the prosthesis template 20. The adjusting device 50 is movably arranged on the cutting device 10 to change the distance from the guiding device 30 by connecting to different positions on the cutting device 10. A stop portion 56 is arranged on the adjusting device 50. The cutting device 10 drives the adjusting device 50 to move to cut the femur 40, and when the stop portion 56 abuts against the guiding device 30, the cutting device 10 stops cutting the femur 40.

[0041] In this embodiment, the adjusting device 50 is arranged on the guiding body, and the guiding body is movably telescopic relative to the guiding device. The adjusting device controls the moving and telescopic distance of the guiding body relative to the guiding device by being arranged at different positions on the guiding body. The guiding body moves towards the guiding device, and the adjusting device is arranged on the outside of the guiding body. At least part of the stop portion cannot pass through the guiding sleeve assembly. After the stop portion of the adjusting device abuts against the guiding device, the guiding body cannot move further, thereby controlling the cutting depth of the cutting knife.

[0042] A plurality of adjusting holes 13 are arranged on the cutting device 10, and the plurality of adjusting holes 13 are arranged at intervals along the guiding direction of the guiding device 30. The adjusting device 50 can be selectively inserted into the adjusting holes 13 to be connected to the cutting device 10.

[0043] Preferably, along the guiding direction of the guiding body, a plurality of adjusting holes 13 are arranged at intervals on the guiding body. The adjusting device pre-selects the corresponding adjusting hole to insert according to the cutting depth of the cutting knife, so as to avoid the problem that the cutting knife moves too far and cuts other parts, or the cutting knife moves too little and cannot complete the cutting.

[0044] The adjusting device in this embodiment includes a limit sleeve body 51, a first pin 52, a first spring 53, a limit sleeve sliding button 54, a second pin 55, a stop portion 56 and a plug-in portion 57. The limit sleeve sliding button 54 is arranged on the limit sleeve body 51 through the first spring 53, the plug-in portion 57 and the second pin 55. The stop portion 56 is arranged at the lower part of the limit sleeve body, and the first pin 52 is used for being plugged on the limit sleeve body 51.

[0045] The cutting tool has a plurality of saw teeth for cutting the femur 40. The cutting tool is arranged in a circular structure, which can effectively avoid right-angle parts on the cut femur 40 when cutting the femur 40, and prevent stress concentration in the later stage.

[0046] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0047] The prosthesis template of the surgical tool of the present invention can quickly disassemble and install the inclined chute design of the intercondylar module, that is, the first positioning component and the second positioning component can be quickly disassembled;

[0048] The prosthesis template of the surgical tool of the present invention can integrate the left and right sides of the same model PS (Posterior Cruciate-Stabilizing) type condyle test mold and the left and right sides of the CR (Posterior Cruciate-Retaining) type condyle test mold into a symmetric femoral condyle test mold of one condyle test mold. The femoral condyle test mold is the prosthesis template 20 in this application.

[0049] The surgical tool of the present invention can change the surgical steps, improve the accuracy of intercondylar osteotomy, and combine the femoral condyle test mold and the intercondylar osteotomy plate into one design.

[0050] The surgical tool of the present invention can improve the efficiency of intercondylar osteotomy, and prevent the adjustable annular bone drill design of insufficient or over-cut intercondylar osteotomy.

[0051] As Figure 6 and Figure 7 shown, the surgical tool in this application further includes: a guide sleeve positioning column 313, a guide sleeve pin 314, a guide sleeve lateral positioning pin 315, a guide sleeve spring 316 and a guide sleeve button 317. The guide sleeve assembly is positioned on the prosthesis template through the guide sleeve positioning column 313. In this application, the guide sleeve assembly is detachably connected to the cutting device and the prosthesis template through the guide sleeve pin 314, the guide sleeve lateral positioning pin 315, the guide sleeve spring 316 and the guide sleeve button 317.

[0052] As Figure 6As shown, the prosthesis template designs the left condyle trial mold and the right condyle trial mold in the prior art as a whole, so that one condyle trial mold can meet the requirements of left and right knee joint replacement surgeries. To achieve this advantage, the specific description is as follows:

[0053] As Figure 4 shown, a groove is opened on the left side at the upper end of the prosthesis template. Since the prosthesis template is a one-piece design of the left and right condyle trial molds, in order to observe the placement position of the femoral condyle well during the left knee surgery, a groove is opened here to identify the external shape characteristics of the left femoral condyle.

[0054] A groove is opened on the right side at the upper end of the prosthesis template. Since the prosthesis template is a one-piece design of the left and right condyle trial molds, in order to observe the placement position of the femoral condyle well during the right knee surgery, a groove is opened here to identify the external shape characteristics of the right femoral condyle.

[0055] The first positioning component of the prosthesis template has the function of an intercondylar osteotomy plate. By installing a guiding device, tools for adjustment and cutting devices can directly perform osteotomy on the first positioning component; in this way, when a doctor performs a PS-type femoral condyle surgery, the femoral condyle trial mold can be first installed on the patient's femur to check the placement position of the prosthesis, and then intercondylar osteotomy can be performed to determine the installation position of the femoral condyle prosthesis.

[0056] A plurality of first screw holes are provided on the first positioning component so that screws can pass through the first screw holes to firmly install the first positioning component onto the patient's femur.

[0057] Positioning holes for positioning the guiding device are provided on the first positioning component. The accurate installation of the guiding device can ensure the precision of intercondylar osteotomy. Through three-hole positioning in two directions, the guiding device can be accurately installed on the first positioning component and firmly locked to prevent loosening.

[0058] An installation groove 212 is also provided on the first positioning component. The installation groove is an avoidance groove for facilitating cutting to pass through in order to cut the bone. After installing the guiding device, the cutting device can be directly connected to perform osteotomy operations, and this groove enables the cutting tool to pass through smoothly.

[0059] During the PS femoral condyle prosthesis replacement surgery of the knee joint, the second positioning component can be directly installed on the first positioning component, and the second positioning component and the first positioning component together serve as a PS-type femoral condyle trial mold Figure 2 for the surgery. To meet the requirements of convenient and quick installation, the second positioning component is a whole design that restores the intercondylar structure of the PS femoral condyle to ensure that the trial mold is consistent with the prosthesis structure;

[0060] The positioning slider is designed in a horn shape and plays a role in limiting the position when installing the second positioning component;

[0061] The positioning slider is an inclined slide rail, which enables the second positioning component to smoothly slide into the inclined groove on the first positioning component;

[0062] A limiting component is also provided on the second positioning component, and this limiting component is one of the main characteristic differences between the PS femoral condyle and the CR femoral condyle.

[0063] In the knee joint PS femoral condyle prosthesis replacement surgery, the guiding device can be directly installed on the prosthesis template and used to guide the cutting device.

[0064] The guiding device and the prosthesis template can be quickly installed and disassembled, and there will be a "Ding" popping sound feedback after being installed in place. To achieve this advantage, the combination of Figure 6 and Figure 7 is described as follows:

[0065] The guiding sleeve button is designed with anti-slip, which is convenient for the doctor to press to move the lateral positioning pin of the guiding sleeve, so that the lateral positioning pin of the guiding sleeve is disengaged from the positioning hole on the first positioning component.

[0066] A platform is provided above the guiding device to support the spring. There is a guiding hole on the platform, and the spring and the guiding sleeve positioning column are arranged in the guiding hole.

[0067] A rotating structure is provided on the contact surface of the guiding sleeve main body and / or the guiding sleeve inner lining to prevent the guiding sleeve inner lining from rotating.

[0068] The end of the guiding sleeve inner lining is designed with a chamfer to facilitate the introduction of the cutting device.

[0069] Brackets are also provided on both sides of the bottom of the guiding device, and this design is used to connect the guiding sleeve positioning column and the guiding sleeve main body.

[0070] The guiding sleeve button is provided with a groove to prevent interference with the guiding sleeve main body when moving the guiding sleeve button.

[0071] The following combines Figure 2 、 Figure 10 to describe the embodiments of the present invention in detail, but the present invention can be implemented in many different ways defined and covered by the claims.

[0072] 1) CR type femoral condyle prosthesis replacement surgery

[0073] If the doctor performs CR type femoral condyle prosthesis replacement surgery, since no intercondylar osteotomy operation is required, the doctor can directly install the first positioning component on the femur 40 of the patient for surgical reduction operation and use.

[0074] 2) PS type femoral condyle prosthesis replacement surgery

[0075] First, install the first positioning component along the S direction into the femur 40 without intercondylar osteotomy. If the coverage position of the first positioning component is not good, the doctor can adjust the position of the first positioning component left and right until the best coverage is achieved.

[0076] Secondly, the doctor holds the guiding device and pushes the positioning post of the guiding sleeve onto the first positioning component. After hearing the snap of the lateral positioning pin of the guiding sleeve, it means that the guiding device is installed in place on the first positioning component.

[0077] Thirdly, the doctor installs the adjusting device to the cutting device at the corresponding specification position. During the installation process, press the sliding button of the limit sleeve with a finger. After the adjusting device slides up and down along the guiding body of the cutting device to the corresponding position and then releases the hand, the adjusting device and the cutting device are locked with each other to limit the osteotomy depth. Then directly connect the assembled tool to the power, align it with the guiding device, and perform osteotomy along the H direction. This process enables the intercondylar osteotomy to be formed in one time, which is convenient and fast.

[0078] Finally, after the intercondylar osteotomy is completed, the doctor presses the button of the guiding sleeve to separate the guiding device from the first positioning component. Then obliquely slide the second positioning component into the first positioning component. After the installation is completed, the doctor can perform the reduction operation and subsequent surgery during the operation.

[0079] The beneficial effects brought by the technical solution of the present invention:

[0080] First of all, the prosthesis template of the present invention integrates the PS-type femoral condyle prosthesis and the CR-type femoral condyle prosthesis into a general-purpose symmetric condyle trial mold, which can save 75% of the number of femoral condyle trial molds, greatly reduce the number of surgical tools, and reduce the labor intensity of doctors; secondly, the design of the femoral condyle trial mold that combines the condyle trial mold and the intercondylar osteotomy plate enables the doctor to first install the condyle trial mold, judge the appropriate position of the intercondylar treatment, and then perform intercondylar osteotomy on the condyle trial mold, optimizing the surgical steps and greatly improving the surgical accuracy; thirdly, the structural design of adjustable intercondylar osteotomy depth enables a cutting tool to meet the osteotomy requirements of all models, preventing insufficient or over-cut intercondylar osteotomy, reducing the number of tools, and reducing the possibility of surgical failure caused by incorrect tool selection. At the same time, the osteotomy method of the annular cutting tool can improve the intercondylar osteotomy efficiency and retain the complete osteotomy bone mass; in short, the present invention can make great progress and improvement in artificial knee joint replacement surgery, especially in primary artificial knee joint replacement surgery, which is beneficial to improving the smoothness and success rate of the surgery, enabling more patients to recover quickly after surgery and stay away from the pain. The present invention can also be used in orthopedic surgeries with similar requirements.

[0081] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0082] Unless otherwise specifically stated, the relative arrangements of the components and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the authorized specification. In all the examples shown and discussed here, any specific values should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, further discussion thereof is not required in subsequent drawings.

[0083] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal", and "top, bottom" are generally based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description. Without contrary instructions, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus should not be construed as limiting the protection scope of the present invention; the orientation words "inside, outside" refer to the inside and outside relative to the outline of each component itself.

[0084] For ease of description, spatial relative terms such as "above", "over", "on the upper surface", "upper" etc. can be used herein to describe the spatial positional relationship of one device or feature to other devices or features as shown in the figures. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, the device described as "above" or "over" other devices or structures will then be positioned "below" or "under" the other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the corresponding explanations for the spatial relative descriptions used herein will be made accordingly.

[0085] In addition, it should be noted that the use of terms such as "first", "second" etc. to define components is only for the convenience of differentiating the corresponding components. Without additional statements, the above terms have no special meanings, and thus should not be construed as limiting the protection scope of the present invention.

[0086] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A surgical tool for orthopedic surgery, characterized in that, The surgical tool includes: A cutting device (10) for cutting the femur (40); A prosthesis template (20) for connecting with the femur (40); Wherein, the prosthesis template (20) includes a first positioning component (21) and a second positioning component (22), the first positioning component (21) and the second positioning component (22) are detachably connected, the first positioning component (21) is positioned on the femur (40) so that the cutting device (10) moves relative to the first positioning component (21) to cut the femur (40), and the second positioning component (22) is connected to the first positioning component (21) after the femur (40) is cut, so as to replace the femoral condyle prosthesis and be positioned on the femur (40); A guiding device (30) provided on the prosthesis template (20) so that the cutting device (10) moves along the guiding direction of the guiding device (30) to cut the femur (40); An adjusting device (50) provided on the cutting device (10) for adjusting the moving distance of the cutting device (10) relative to the prosthesis template (20), a stop portion (56) is provided on the adjusting device (50), and the cutting device (10) drives the adjusting device (50) to move to cut the femur (40), so that when the stop portion (56) abuts against the guiding device (30), the cutting device (10) stops cutting the femur (40).

2. The surgical tool according to claim 1, wherein A positioning groove (211) is provided on the first positioning component (21), a positioning slider (221) is provided on the second positioning component (22), and the second positioning component (22) is connected to the positioning groove (211) on the first positioning component (21) through the positioning slider (221).

3. The surgical tool according to claim 1, characterized in that, The cutting device (10) includes a cutting knife (11), the cutting knife (11) is of an arc structure, and the cutting device (10) cuts the femur (40) by rotating the cutting knife (11).

4. The surgical tool according to claim 1, wherein The guiding device (30) includes: A guiding sleeve assembly (31) detachably provided on the prosthesis template (20), the cutting device (10) includes a guiding body (12), and the guiding body (12) is movably inserted into the guiding sleeve assembly (31); Wherein, the cutting knife (11) is provided at one end of the guiding body (12) to cut the femur (40) under the drive of the guiding body (12).

5. The surgical tool according to claim 1, wherein The adjusting device (50) is movably provided on the cutting device (10) to change the distance from the guiding device (30) by connecting to different positions on the cutting device (10).

6. The surgical tool according to claim 5, wherein A plurality of adjustment holes (13) are provided on the cutting device (10), and the plurality of adjustment holes (13) are arranged at intervals along the guiding direction of the guiding device (30). The adjusting device (50) can be selectively inserted into the adjustment holes (13) to be connected to the cutting device (10).

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