A femoral condyle prosthesis positioning tool and a grinding device

Abstract

This invention discloses a femoral condyle prosthesis positioning fixture and grinding device. The femoral condyle prosthesis positioning fixture includes a fixture body and a locking mechanism. A limiting groove is provided in the middle of the fixture body to accommodate the intercondylar structure of the femoral condyle prosthesis. The locking mechanism includes a locking block disposed within the limiting groove, with the locking block positioned on one side corresponding to the intercondylar structure. The locking block is adaptable to move to lock or unlock the intercondylar structure within the limiting groove. A first limiting surface and a second limiting surface are respectively provided on both sides of the fixture body. The first limiting surface is used to abut against a first back surface corresponding to the anterior condylar surface of the femoral condyle prosthesis, and the second limiting surface is used to abut against a second back surface corresponding to the trochlear surface of the femoral condyle prosthesis. This invention satisfies the requirements for fixture clamping and also provides protection for the non-machined surface of the workpiece, i.e., the back surface of the femoral condyle prosthesis, during processing. This application replaces manual hand-held positioning, improving process defects, enhancing workpiece surface quality consistency, and increasing production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of precision machining technology for medical devices, and in particular to a femoral condyle prosthesis positioning fixture and grinding device. Background Technology

[0002] The front of a femoral condyle prosthesis includes the anterior condylar surface, the trochlear surface, and the connecting surface between the two. The back of the femoral condyle prosthesis typically features intercondylar structures and fixation posts. The front of the femoral condyle prosthesis is a crucial structure in artificial knee joints, and it requires surface machining and polishing. Current surface machining and polishing processes generally rely on manual manipulation, which suffers from unstable grip, inaccurate positioning, and poor workpiece quality consistency, significantly increasing production costs. Utility Model Content

[0003] The purpose of this invention is to provide a femoral condyle prosthesis positioning fixture and grinding device, so as to at least partially solve the technical problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A femoral condyle prosthesis positioning fixture includes a fixture body and a locking mechanism. The fixture body has a limiting groove in the middle for accommodating the intercondylar structure of the femoral condyle prosthesis. The locking mechanism includes a locking block disposed within the limiting groove and corresponding to one side of the intercondylar structure. The locking block is adapted to move to lock or unlock the intercondylar structure within the limiting groove. The fixture body has a first limiting surface and a second limiting surface on its two sides. The first limiting surface is used to abut against a first back surface corresponding to the anterior condylar surface of the femoral condyle prosthesis, and the second limiting surface is used to abut against a second back surface corresponding to the trochlear surface of the femoral condyle prosthesis.

[0006] Optionally, the locking mechanism further includes a locking set screw, and the tooling body is provided with a first locking hole corresponding to the locking set screw. The locking set screw is threadedly connected to the first locking hole. One end of the locking set screw extends out of the first locking hole and is connected to the locking block. The locking set screw can rotate relative to the locking block. The rotation of the locking set screw drives the locking block to move closer to or away from the intercondylar structure.

[0007] Optionally, the locking block has a T-shaped groove on the side near the locking screw, and the locking screw has a T-shaped block at one end near the locking block, with the T-shaped block located in the T-shaped groove.

[0008] Optionally, the tooling body is provided with a third limiting surface for connecting the first limiting surface and the second limiting surface, and the third limiting surface is fitted with a third back surface on the femoral condyle prosthesis for connecting the first back surface and the second back surface.

[0009] Optionally, the locking block is provided with a fourth limiting surface that is coplanar with the third limiting surface.

[0010] Optionally, the bottom of the limiting groove has a second opening corresponding to the first opening of the intercondylar structure.

[0011] Optionally, the tooling body is provided with a limiting hole corresponding to the fixation post of the femoral condyle prosthesis, and the limiting hole is used to accommodate the fixation post.

[0012] Optionally, the tooling body has an assembly hole on the outer side opposite to the first locking hole, and a second locking hole communicating with the assembly hole is provided on one side of the assembly hole. The assembly hole is used to connect the support rod of the dragging device, and a locking screw is internally threaded into the second locking hole. The locking screw is used to lock the support rod.

[0013] Optionally, the axis of the second locking hole is perpendicular to the axis of the assembly hole.

[0014] Optionally, the assembly hole is inclined upward, and the angle between the axis of the assembly hole and the vertical plane is 120°-130°.

[0015] Optionally, the tooling body is provided with a protective block corresponding to the lifting groove of the femoral condyle prosthesis, and the protective block is used to extend into the lifting groove.

[0016] A grinding apparatus, comprising the aforementioned femoral condyle prosthesis positioning fixture.

[0017] The beneficial effects of this utility model are as follows: This utility model provides positioning and protection for the intercondylar structure, the first back surface corresponding to the anterior condylar surface, and the second back surface corresponding to the trochlear surface of the femoral condyle prosthesis through the limiting groove, the first limiting surface, and the second limiting surface, respectively. The intercondylar structure is locked or unlocked by the locking mechanism, which not only meets the requirements for tooling clamping but also provides protection for the non-machined surface of the workpiece, i.e., the back surface of the femoral condyle prosthesis, during processing. This application replaces manual hand-held positioning, which can improve process defects, enhance the consistency of workpiece surface quality, increase production efficiency, and reduce costs. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the installation of a femoral condyle prosthesis positioning fixture and a femoral condyle prosthesis according to an embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of a femoral condyle prosthesis positioning tool according to an embodiment of the present invention;

[0021] Figure 3 This is a top view of a femoral condyle prosthesis positioning fixture according to an embodiment of the present invention;

[0022] Figure 4 This is an exploded top view of a femoral condyle prosthesis positioning fixture according to an embodiment of the present invention;

[0023] Figure 5 This is a right view of a femoral condyle prosthesis positioning fixture according to an embodiment of the present invention;

[0024] Figure 6 This is a left view of a femoral condyle prosthesis positioning fixture according to an embodiment of the present invention;

[0025] Figure 7 This is a rear view of a femoral condyle prosthesis positioning fixture according to an embodiment of the present invention;

[0026] Figure 8 This is a front view of a femoral condyle prosthesis positioning tool according to an embodiment of the present invention;

[0027] Figure 9 This is a bottom view of a femoral condyle prosthesis positioning fixture according to an embodiment of the present invention;

[0028] Figure 10 for Figure 9 AA section view;

[0029] Figure 11 This is a schematic diagram of the structure of a locking block according to an embodiment of the present invention;

[0030] Figure 12 This is a front view of a locking block according to an embodiment of the present invention;

[0031] Figure 13 This is a top view of a locking block according to an embodiment of the present invention;

[0032] Figure 14This is a left view of a locking block according to an embodiment of the present invention.

[0033] in:

[0034] 01. Femoral condyle prosthesis; 011. Intercondylar structure; 012. First back side; 013. Second back side; 014. Third back side; 015. First hollow; 016. Fixing post; 017. Lifting groove; 1. Tooling body; 11. Limiting groove; 12. First limiting surface; 13. Second limiting surface; 14. First locking hole; 15. Third limiting surface; 16. Second hollow; 17. Limiting hole; 18. Placement groove; 181. Bottom of placement groove; 2. Locking block; 21. Slot; 22. Bottom surface of locking block; 23. Fourth limiting surface; 3. Locking screw; 31. Locking block; 4. Assembly hole; 5. Protective block; 6. Second locking hole. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] like Figure 1 As shown, the femoral condyle prosthesis 01 has an intercondylar structure 011 protruding towards its dorsal side in the middle, and the intercondylar structure 011 has a first hollow 015. Fixing posts 016 are provided on both sides of the intercondylar structure 011. The dorsal side corresponding to the anterior condylar surface of the femoral condyle prosthesis 01 is defined as the first dorsal side 012, and the dorsal side corresponding to the trochlear surface of the femoral condyle prosthesis 01 is defined as the second dorsal side 013; the surface connecting the first dorsal side 012 and the second dorsal side 013 is defined as the third dorsal side 014; the edges of the third dorsal side 014, located outside the fixing posts 016, are respectively provided with lifting grooves 017. To position the femoral condyle prosthesis 01 during surface treatment, this embodiment provides a femoral condyle prosthesis positioning fixture, such as... Figures 1-14As shown, the device includes a tooling body 1 and a locking mechanism. The tooling body 1 supports the back of the femoral condyle prosthesis 01, and the locking mechanism locks the intercondylar structure 011 of the femoral condyle prosthesis 01, thereby locking the femoral condyle prosthesis 01. Specifically, a limiting groove 11 is provided in the middle of the tooling body 1. The limiting groove 11 is used to accommodate the intercondylar structure 011 of the femoral condyle prosthesis 01. The locking mechanism includes a locking block 2, which is disposed in the limiting groove 11. The locking block 2 is disposed on one side corresponding to the intercondylar structure 011. The locking block 2 is adapted to move to lock or unlock the intercondylar structure 011 in the limiting groove 11. The tooling body 1 has a first limiting surface 12 and a second limiting surface 13 on both sides. The first limiting surface 12 is used to fit with the first back surface 012 corresponding to the anterior condyle surface of the femoral condyle prosthesis 01, and the second limiting surface 13 is used to fit with the second back surface 013 corresponding to the trochlear surface of the femoral condyle prosthesis 01.

[0037] In this embodiment, the intercondylar structure 011 of the femoral condyle prosthesis 01 is inserted into the limiting groove 11 from above the tooling body 1. The first limiting surface 12 is fitted with the first back surface 012 corresponding to the anterior condylar surface of the femoral condyle prosthesis 01, and the second limiting surface 13 is fitted with the second back surface 013 corresponding to the trochlear surface of the femoral condyle prosthesis 01. The limiting groove 11, the first limiting surface 12, and the second limiting surface 13 respectively provide positioning and protection for the intercondylar structure 011, the first back surface 012 corresponding to the anterior condylar surface, and the second back surface 013 corresponding to the trochlear surface of the femoral condyle prosthesis 01. The locking mechanism locks or unlocks the intercondylar structure 011, which satisfies the tooling clamping function and also protects the non-machined surface of the workpiece, i.e., the back surface of the femoral condyle prosthesis 01, during processing. This embodiment replaces manual hand-held positioning, which can improve process defects, enhance the consistency of workpiece surface quality, increase production efficiency, and reduce costs. This embodiment has a simple structure and is easy to operate.

[0038] Preferably, such as Figure 1 As shown, the shape of the limiting groove 11 is adapted to the shape of the intercondylar structure 011. After the tooling is assembled with the femoral condyle prosthesis 01, the bottom of the limiting groove 11 fits against the bottom surface of the intercondylar structure 011. The width of the limiting groove 11 is greater than the width of the intercondylar structure 011, providing installation space for the locking block 2. After the locking block 2 is locked, the locking block 2 abuts against one side of the intercondylar structure 011, and the other side of the intercondylar structure 011 fits against the side wall of the limiting groove 11 away from the locking block 2.

[0039] Furthermore, such as Figure 4As shown, the locking mechanism also includes a locking screw 3. The tooling body 1 has a first locking hole 14 corresponding to the locking screw 3. The locking screw 3 is threadedly connected to the first locking hole 14. One end of the locking screw 3 extends out of the first locking hole 14 and connects to the locking block 2. The locking screw 3 can rotate relative to the locking block 2. Rotating the locking screw 3 causes the locking block 2 to move closer to or away from the intercondylar structure 011. When the locking screw 3 is rotated, because it is threadedly connected to the first locking hole 14, the locking screw 3 moves axially along the first locking hole 14 while rotating. This causes the locking screw 3 to move the locking block 2, moving it closer to or away from the side of the intercondylar structure 011 in the limiting groove 11, thereby locking or unlocking the intercondylar structure 011. In this embodiment, the locking screw 3 rotates to move the locking block 2 to lock the intercondylar structure 011, thus achieving the locking of the femoral condyle prosthesis 01.

[0040] Optionally, the locking block 2 has a T-shaped groove 21 on its side near the locking screw 3, and a T-shaped block 31 is provided at one end of the locking screw 3 near the locking block 2. The T-shaped block 31 is located within the T-shaped groove 21. In this embodiment, the T-shaped groove 21 is a through groove, allowing the T-shaped block 31 to enter from either end, thus enabling the installation of the locking screw 3 and the locking block 2. The T-shaped groove 21 and the T-shaped block 31 are clearance-fitted to ensure that the T-shaped block 31 rotates smoothly within the T-shaped groove 21 along with the locking screw 3. The T-shaped groove 21 and the T-shaped block 31 have a simple structure, are easy to install, and facilitate the rotation of the locking screw 3 relative to the locking block 2. There can be 1, 2, 3, or 4 locking screws.

[0041] Furthermore, such as Figure 2 As shown, the tooling body 1 is provided with a third limiting surface 15 for connecting the first limiting surface 12 and the second limiting surface 13. The third limiting surface 15 is in contact with the third back surface 014 of the femoral condyle prosthesis 01 for connecting the first back surface 012 and the second back surface 013. In this embodiment, the third limiting surface 15 can effectively support and protect the third back surface 014 of the femoral condyle prosthesis 01. The first limiting surface 12, the second limiting surface 13, the third limiting surface 15 and the limiting groove 11 together can support the back surface of the femoral condyle prosthesis 01.

[0042] Optionally, such as Figure 1 and Figure 2 As shown, the locking block 2 is provided with a fourth limiting surface 23 that is coplanar with the third limiting surface 15. The fourth limiting surface 23 can also support the third back surface 014 of the femoral condyle prosthesis 01, thereby increasing the supporting area of ​​the entire fixture on the back surface of the femoral condyle prosthesis 01 and improving the supporting force.

[0043] Furthermore, such as Figure 1As shown, the bottom of the limiting groove 11 has a second opening 16 corresponding to the first opening 015 of the intercondylar structure 011. In use, the bottom of the limiting groove 11 is in contact with the bottom surface of the intercondylar structure 011, and the first opening 015 and the second opening 16 are set accordingly. During grinding, the abrasive can flow from the intercondylar of the workpiece, the first opening 015 and the second opening 16, ensuring that the two sides of the intercondylar on the front of the workpiece can be ground in place.

[0044] Specifically, such as Figures 1-4 As shown, the fixture body 1 has a limiting hole 17 corresponding to the fixation post 016 of the femoral condyle prosthesis 01. The limiting hole 17 is used to accommodate the fixation post 016. The fixation post 016 is inserted into the limiting hole 17 from above the fixture body 1. The limiting hole 17 limits the fixation post 016. The limiting groove 11 and the limiting hole 17 are closely fitted and clamped with the intercondylar structure 011 and the fixation post 016 on the back of the femoral condyle prosthesis 01, providing a protective function.

[0045] Optionally, such as Figure 2 , Figure 3 and Figure 5 As shown, the bottom of the limiting groove 11 is provided with a placement groove 18 corresponding to the locking block 2. The bottom of the placement groove 181 is a plane, and the bottom surface 22 of the locking block, that is, the surface in contact with the bottom of the placement groove 181, is also a plane, so that the locking block 2 can move smoothly in the placement groove 18.

[0046] Furthermore, such as Figure 2 , Figure 5 , Figures 8-10 As shown, the main body of the tooling 1 has an assembly hole 4 on its outer side opposite to the first locking hole 14. A second locking hole 6 communicating with the assembly hole 4 is provided on one side of the assembly hole 4. The assembly hole 4 is used to connect the support rod of the dragging device. A locking screw is internally threaded into the second locking hole 6, and the locking screw is used to lock the support rod. In this embodiment, the second locking hole 6 is located on the side of the assembly hole 4 near the second limiting surface 13. The support rod of the dragging device extends into the assembly hole 4, and tightening the locking screw allows the locking screw to press against the support rod. This tooling enables the connection between the femoral condyle prosthesis 01 and the dragging device, and allows for automated surface grinding through the dragging device. The dragging device and support rod are existing structures and will not be described in detail here.

[0047] Optionally, the axis of the second locking hole 6 is perpendicular to the axis of the mounting hole 4, which facilitates the effective tightening of the locking screw.

[0048] Optionally, the mounting hole 4 is inclined upwards, and the angle between the axis of the mounting hole 4 and the vertical plane is 120°-130°. Preferably, in this embodiment, the angle between the axis of the mounting hole 4 and the vertical plane is 125°.

[0049] Furthermore, such as Figure 1 and Figure 2As shown, the tool body 1 is provided with a protective block 5 corresponding to the lifting groove 017 of the femoral condyle prosthesis 01. The protective block 5 is used to extend into the lifting groove 017. When in use, the protective block 5 is located in the lifting groove 017 and the protective block 5 has a protective function for the lifting groove 017.

[0050] Furthermore, to ensure the quality of the assembly of the femoral condyle prosthesis 01 with the tooling, the material hardness of the locking block 2 is lower than that of the femoral condyle prosthesis 01 to avoid contact with the femoral condyle prosthesis 01 and causing pinching injury; the locking block 2 works in conjunction with the locking screw 3 to lock.

[0051] This embodiment also provides a grinding device, including the aforementioned femoral condyle prosthesis positioning fixture, and also includes a dragging device.

[0052] How to use this embodiment:

[0053] 1. Screw the two locking screws 3 into the two first locking holes 14 of the fixture body 1 respectively, so that the T-shaped locking block 31 of the locking screw 3 extends out of the fixture body 1.

[0054] 2. Align one end of the T-shaped slot 21 of the locking block 2 with the T-shaped block 31, move the locking block 2, and install the T-shaped block 31 into the T-shaped slot 21. The locking block 2 is located in the placement groove 18, and the bottom surface 22 of the locking block is in contact with the bottom 181 of the placement groove. The fourth limiting surface 23 of the locking block 2 is aligned with the third limiting surface 15 of the tooling body 1. Assemble the locking set screw 3, the locking block 2 and the tooling body 1. At this time, the locking set screw 3 is turned (counterclockwise) to drive the locking block 2 to move outward. The locking block 2 is in the locking limit state.

[0055] 3. The back of the femoral condyle prosthesis 01 is placed above the main body of the tooling 1. The intercondylar structure 011 fits into the limiting groove 11, and the fixing post 016 is placed in the limiting hole 17. At this time, the back of the femoral condyle prosthesis 01 is in close contact with the tooling, and the tooling effectively wraps the back of the femoral condyle prosthesis 01. The first back of the femoral condyle prosthesis 01 012 fits into the first limiting surface 12 of the tooling. The second back of the femoral condyle prosthesis 01 013 fits into the second limiting surface 13 of the tooling. The third back of the femoral condyle prosthesis 01 014 fits into the third limiting surface 15 of the tooling and the fourth limiting surface 23 of the locking block 2.

[0056] 4. Secure the clamped workpiece by tightening it. Using a torque wrench, turn the locking screw 3 (clockwise) to move the locking block 2 closer to the side of the intercondylar structure 011 and tighten it to complete the clamping of the femoral condyle prosthesis 01. Conversely, turn the locking screw 3 counterclockwise to disassemble the femoral condyle prosthesis 01.

[0057] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the system or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0058] Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first," "second," "third," or "fourth" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0059] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0060] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0061] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A femoral condyle prosthesis positioning fixture, characterized in that: The device includes a tooling body and a locking mechanism. The tooling body has a limiting groove in the middle for accommodating the intercondylar structure of the femoral condyle prosthesis. The locking mechanism includes a locking block disposed in the limiting groove and corresponding to one side of the intercondylar structure. The locking block is adapted to move to lock or unlock the intercondylar structure in the limiting groove. The tooling body has a first limiting surface and a second limiting surface on its two sides. The first limiting surface is used to fit against a first back surface corresponding to the anterior condylar surface of the femoral condyle prosthesis, and the second limiting surface is used to fit against a second back surface corresponding to the trochlear surface of the femoral condyle prosthesis.

2. The femoral condyle prosthesis positioning fixture according to claim 1, characterized in that: The locking mechanism further includes a locking set screw. The tooling body is provided with a first locking hole corresponding to the locking set screw. The locking set screw is threadedly connected to the first locking hole. One end of the locking set screw extends out of the first locking hole and is connected to the locking block. The locking set screw can rotate relative to the locking block. The rotation of the locking set screw drives the locking block to move closer to or away from the intercondylar structure.

3. The femoral condyle prosthesis positioning fixture according to claim 2, characterized in that: The locking block has a T-shaped groove on its side near the locking screw, and the locking screw has a T-shaped block at one end near the locking block, with the T-shaped block located in the T-shaped groove.

4. The femoral condyle prosthesis positioning fixture according to claim 1, characterized in that: The tooling body is provided with a third limiting surface for connecting the first limiting surface and the second limiting surface, and the third limiting surface is in contact with the third back surface of the femoral condyle prosthesis for connecting the first back surface and the second back surface.

5. The femoral condyle prosthesis positioning fixture according to claim 4, characterized in that: The locking block is provided with a fourth limiting surface that is coplanar with the third limiting surface.

6. The femoral condyle prosthesis positioning fixture according to claim 1, characterized in that: The bottom of the limiting groove has a second opening corresponding to the first opening of the intercondylar structure.

7. The femoral condyle prosthesis positioning fixture according to claim 1, characterized in that: The tooling body has a limiting hole corresponding to the fixation post of the femoral condyle prosthesis, and the limiting hole is used to accommodate the fixation post.

8. The femoral condyle prosthesis positioning fixture according to claim 2, characterized in that: The tooling body has an assembly hole on its outer side opposite to the first locking hole. A second locking hole communicating with the assembly hole is provided on one side of the assembly hole. The assembly hole is used to connect the support rod of the towing device. A locking screw is internally threaded into the second locking hole and is used to lock the support rod.

9. The femoral condyle prosthesis positioning fixture according to claim 8, characterized in that: The axis of the second locking hole is perpendicular to the axis of the assembly hole; And / or, the assembly hole is inclined upwards, and the angle between the axis of the assembly hole and the vertical plane is 120°-130°. And / or, the tooling body is provided with a protective block corresponding to the lifting groove of the femoral condyle prosthesis, and the protective block is used to extend into the lifting groove.

10. A grinding apparatus, characterized in that: The femoral condyle prosthesis positioning tool is described in any one of claims 1-9.

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