A hip joint endoprosthesis

Abstract

The utility model provides a kind of acetabulum lining processing frock, belong to medical instrument technical field.The utility model provides a kind of acetabulum lining processing frock, including mounting seat and fixed base, mounting seat upper end surface is provided with first installation surface, intermediate transition surface and second installation surface, first installation surface is horizontally arranged, intermediate transition surface connects the front end of first installation surface with the rear end of second installation surface, relative to first installation surface, second installation surface is downwardly inclined arrangement, limit component is set on intermediate transition surface, and limit component is used to limit acetabulum lining;The lower end surface of fixed base is provided with fixed groove, fixed base cover is set in the upper end of mounting seat, and the upper end surface of fixed base is provided with a slot, and the upper end of acetabulum lining is adapted to pass out from the slot.The utility model provides a kind of acetabulum lining processing frock, fixed base is fixed on mounting seat with acetabulum lining, and acetabulum lining passes through the slot, and the upper end of acetabulum lining is conveniently processed.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, specifically relating to a tooling for processing acetabular liners. Background Technology

[0002] Hip replacement surgery, also known as artificial hip replacement, involves implanting an artificial prosthesis into the human body to replace the diseased joint, effectively helping patients with severe hip joint damage improve their quality of life. The joint prostheses required in hip replacement surgery typically include an acetabular cup prosthesis and a femoral prosthesis. The acetabular cup prosthesis consists of the acetabular cup and liner, while the femoral prosthesis consists of the femoral head and femoral stem.

[0003] The acetabular liner consists of an outer surface and an inner surface. The inner surface is generally hemispherical, while the outer surface has a structure that mates with the acetabular cup. It is generally made of polymer materials, and the processing quality of its surface directly affects the service life of the acetabular liner.

[0004] The surface of the intermediate part of the acetabular liner is curved, and the acetabular liner surface has high and low edges, with a limiting groove set at the junction of the high and low edges. The high and low edges of the acetabular liner surface have a height difference, and the material is relatively soft. During the processing of the acetabular liner, positioning is difficult and clamping is not easy. During the clamping process, the bottom of the product is prone to tilting. If the force is not applied carefully, the surface of the acetabular liner can be easily damaged, causing surface damage and even deformation of the product sidewall. This makes it impossible to meet the extremely high manufacturing precision of the acetabular liner, resulting in a lower production qualification rate and increased manufacturing costs. Utility Model Content

[0005] The purpose of this utility model is to provide a tooling for machining the acetabular liner, which aims to solve the problem of difficulty in fixing the acetabular liner during machining.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a tooling for machining the acetabular liner, comprising: A mounting base for mounting an acetabular liner, the upper surface of the mounting base having a first mounting surface, an intermediate transition surface, and a second mounting surface. The first mounting surface is horizontally positioned, the intermediate transition surface connects the front end of the first mounting surface to the rear end of the second mounting surface, and the second mounting surface is inclined downwards relative to the first mounting surface. A limiting component is provided on the intermediate transition surface for limiting the position of the acetabular liner; and A fixing seat is used to fix the acetabular liner. The lower end face of the fixing seat is provided with a fixing groove. The fixing seat covers the upper end of the mounting seat. The upper end face of the fixing seat is provided with a relief groove, which is adapted to allow the upper end of the acetabular liner to pass through.

[0007] In one possible implementation, the limiting component includes multiple sets of limiting posts adapted to pass through a limiting groove on the underside of the acetabular liner.

[0008] In one possible implementation, multiple sets of the limiting posts are arranged radially along the mounting base and on the same straight line.

[0009] In one possible implementation, a clearance groove is provided at the center of the upper end face of the mounting base.

[0010] In one possible implementation, the projection of the inner wall of the clearance groove onto the upper surface of the mounting base is located outside the limiting component.

[0011] In one possible implementation, the side wall of the mounting base is provided with a positioning groove.

[0012] In one possible implementation, the bottom of the positioning groove is parallel to the vertical plane where the limiting component is located.

[0013] In one possible implementation, the positioning groove is disposed on the rear sidewall of the mounting base.

[0014] In one possible implementation, the inner diameter of the clearance groove is smaller than the outer diameter of the upper end of the mounting base.

[0015] In one possible implementation, the inner side of the sidewall of the fixing seat is provided with an internal thread structure, and the sidewall of the mounting seat is provided with an external thread structure, wherein the internal thread structure matches the external thread structure.

[0016] The beneficial effects of the acetabular liner machining fixture provided by this utility model are as follows: Compared with the prior art, the mounting base is used to install the acetabular liner. The acetabular liner is set on the upper end face of the mounting base. The upper end face of the mounting base is provided with a first mounting surface, an intermediate transition surface and a second mounting surface. The first mounting surface, the intermediate transition surface and the second mounting surface match the lower bottom surface of the acetabular liner. The first mounting surface matches the high side surface of the lower bottom surface of the acetabular liner and the second mounting surface matches the low side surface of the lower bottom surface of the acetabular liner. The upper end face of the mounting base effectively supports the lower bottom surface of the acetabular liner, increases the stability of the acetabular liner during the processing, and avoids uneven stress on the lower bottom surface of the acetabular liner during the processing, which may cause deformation. The limiting component is set on the intermediate transition surface. The limiting component is used to limit the acetabular liner. The limiting component matches the limiting groove on the bottom surface of the acetabular liner. The limiting component restricts the displacement of the acetabular liner and prevents the acetabular liner from changing its position and angle under the action of force during the processing, thereby improving the stability of the processing. The fixing seat secures the acetabular liner to the mounting seat. The lower end face of the fixing seat has a fixing groove with the opening facing downwards. The upper end face of the fixing seat has a relief groove that communicates with the fixing groove. The fixing seat covers the lower bottom surface of the acetabular liner and the outer side of the upper end face of the mounting seat. The structure on the outer surface of the acetabular liner that mates with the acetabular cup is located inside the fixing seat. The upper end of the acetabular liner protrudes through the relief groove. The part of the acetabular liner that protrudes through the relief groove is machined. The fixing seat increases the stability of the acetabular liner installation. The acetabular liner is securely fixed to the mounting base, making installation quick and easy. It is highly stable, and the acetabular liner is subjected to uniform stress, avoiding deformation and surface damage during processing. This ensures the manufacturing precision of the acetabular liner, improves the production qualification rate, and reduces production costs. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, 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.

[0018] Figure 1 A three-dimensional structural diagram of the acetabular liner machining fixture provided in this embodiment of the utility model. Figure 1 ; Figure 2 A three-dimensional structural diagram of the acetabular liner machining fixture provided in this embodiment of the utility model. Figure 2 ; Figure 3 A schematic diagram of the vertical cross-sectional structure of the acetabular liner machining fixture provided in this embodiment of the utility model; Figure 4 Exploded view of the acetabular liner machining tooling provided for an embodiment of this utility model; Figure 5 This is a right-side view of the mounting base used in an embodiment of the present invention.

[0019] In the diagram: 1000, mounting base; 1001, first mounting surface; 1002, first transition surface; 1003, second transition surface; 1004, second mounting surface; 1005, limiting post; 1006, limiting mounting groove; 1007, positioning groove; 1008, clearance groove; 1009, external thread structure; 1010, intermediate transition surface; 2000, fixing base; 2001, fixing groove; 2002, clearance groove; 2003, internal thread structure. Detailed Implementation

[0020] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0021] For ease of description, the height direction of mounting base 1000 is defined as the up-down direction.

[0022] Please refer to Figures 1 to 5 The present invention provides a specific embodiment of a acetabular liner processing fixture, which includes a mounting base 1000 and a fixing base 2000; the mounting base 1000 is used to install the acetabular liner, and the fixing base 2000 is used to fix the acetabular liner.

[0023] The upper surface of the mounting base 1000 is provided with a first mounting surface 1001, an intermediate transition surface 1010 and a second mounting surface 1004. The first mounting surface 1001 is horizontally arranged, and the intermediate transition surface 1010 connects the front end of the first mounting surface 1001 and the rear end of the second mounting surface 1004. The second mounting surface 1004 is inclined downward relative to the first mounting surface 1001. A limiting component is provided on the intermediate transition surface 1010, which is used to limit the acetabular liner.

[0024] For details, please refer to Figures 1 to 5 The lower surface of the acetabular prosthesis has a high side and a low side. Correspondingly, the lower surface of the acetabular prosthesis includes a high side surface and a low side surface. The high side surface and the low side surface are set at an angle. A connecting surface is provided between the high side surface and the low side surface. A limit groove is provided at the connecting surface.

[0025] Mounting seat 1000 is used to install the acetabular liner. Mounting seat 1000 is cylindrical, or optionally cylindrical. The cylindrical shape helps to reduce the volume of mounting seat 1000. The acetabular liner is set on the upper end face of mounting seat 1000. The upper end face of mounting seat 1000 matches the lower bottom face of the acetabular prosthesis. The outer diameter of the upper end face of mounting seat 1000 is consistent with the outer diameter of the acetabular prosthesis, which facilitates the installation of the acetabular prosthesis.

[0026] The upper surface of the mounting base 1000 is provided with a first mounting surface 1001, an intermediate transition surface 1010 and a second mounting surface 1004. The first mounting surface 1001 matches the high side surface of the lower bottom surface of the acetabular liner, the second mounting surface 1004 matches the low side surface of the lower bottom surface of the acetabular liner, and the intermediate transition surface 1010 matches the connecting surface of the lower bottom surface of the acetabular liner.

[0027] The first mounting surface 1001 and the second mounting surface 1004 are set at an angle. The rear end of the intermediate transition surface 1010 is connected to the front end of the first mounting surface 1001, and the front end of the intermediate transition surface 1010 is connected to the rear end of the second mounting surface 1004. The intermediate transition surface 1010 transitionally connects the first mounting surface 1001 and the second mounting surface 1004. The intermediate transition surface 1010 is set radially along the mounting base 1000. The first mounting surface 1001 is set horizontally, and the second mounting surface 1004 is set inclined downward relative to the first mounting surface 1001, that is, the height of the front end of the second mounting surface 1004 is lower than the height of the rear end.

[0028] The intermediate transition surface 1010 is used to transition the connection between the first mounting surface 1001 and the second mounting surface 1004. The intermediate transition surface 1010 can be an arc transition surface.

[0029] The intermediate transition surface 1010 may include a first transition surface 1002 and a second transition surface 1003 connected front to back. The rear end of the first transition surface 1002 is connected to the front end of the first mounting surface 1001, and the front end of the second transition surface 1003 is connected to the rear end of the second mounting surface 1004. The connecting line between the first transition surface 1002 and the second transition surface 1003 is arranged radially along the mounting base 1000. The first transition surface 1002 is set at an angle to the first mounting surface 1001, and the second transition surface 1003 is set at an angle to the second mounting surface 1004. The first transition surface 1002 and the second transition surface 1003 help to reduce the change in angle between the first mounting surface 1001 and the second mounting surface 1004.

[0030] The first mounting surface 1001, the intermediate transition surface 1010, and the second mounting surface 1004 are matched with the lower bottom surface of the acetabular liner. The upper end of the mounting seat 1000 effectively supports the lower bottom surface of the acetabular liner, increasing the stability of the acetabular liner during processing and preventing uneven stress and deformation of the lower bottom surface of the acetabular liner during processing.

[0031] The limiting component is disposed on the intermediate transition surface 1010 and on the radial side of the mounting base 1000. Optionally, the limiting component is disposed on the first transition surface 1002 and the second transition surface 1003. The connecting line between the first transition surface 1002 and the second transition surface 1003 coincides with the centerline of the limiting component. The limiting component is used to limit the acetabular liner.

[0032] The limiting component matches the limiting groove on the bottom surface of the acetabular liner. The limiting component restricts the displacement of the acetabular liner, preventing displacement and rotation of the acetabular liner under force during processing, thus improving processing stability.

[0033] The fixing seat 2000 fixes the acetabular liner to the mounting seat 1000. The lower end face of the fixing seat 2000 is provided with a fixing groove 2001, which opens downwards. The upper end face of the fixing seat 2000 is provided with a relief groove 2002, which communicates with the fixing groove 2001. The side wall of the fixing groove 2001 covers the lower end of the acetabular liner and the outer side of the upper end of the mounting seat 1000. The structure on the outer surface of the acetabular liner that mates with the acetabular cup is located inside the fixing seat 2000. The arc surface at the upper end of the acetabular liner protrudes through the relief groove 2002 and is located outside the fixing seat 2000. The part of the acetabular liner that protrudes through the relief groove 2002 is machined. The fixing seat 2000 increases the stability of the acetabular liner installation and prevents the acetabular liner from falling off during the machining process.

[0034] The acetabular liner is securely fixed on the mounting base 1000, making installation quick and convenient, with high stability. The acetabular liner is subjected to uniform stress, avoiding deformation and surface damage during processing, ensuring the manufacturing precision of the acetabular liner, improving the production qualification rate, and reducing production costs.

[0035] Mounting base 1000 can be made of metal material. As a metal component, it has high strength and is not easily deformed. Mounting base 1000 is easy to clamp and fix.

[0036] The fixing seat 2000 can be made of polymer material. As a polymer material component, it can be made of the same material as the acetabular liner to avoid damage to the acetabular liner during processing.

[0037] As a specific embodiment of the acetabular liner machining tool provided by this utility model, please refer to Figures 1 to 5 The limiting component includes multiple sets of limiting posts 1005, which are adapted to be inserted into the limiting groove on the lower surface of the acetabular liner.

[0038] For details, please refer to Figures 1 to 5 Multiple sets of limiting posts 1005 are provided. The limiting posts 1005 are cylindrical and vertically arranged to facilitate insertion into the limiting groove on the bottom surface of the acetabular liner. Each limiting post 1005 corresponds to a limiting groove. Inserting the limiting post 1005 into the limiting groove helps to limit the acetabular liner during processing and prevents the acetabular liner from rotating under the action of force.

[0039] The limiting post 1005 is detachably mounted on the mounting base 1000. The upper end surface of the mounting base 1000 is provided with a limiting mounting groove 1006. The limiting mounting groove 1006 is vertically arranged and is suitable for the lower end of the limiting post 1005 to pass through. The limiting post 1005 is detachable, which facilitates the adjustment of the number and position of the limiting posts 1005.

[0040] As a specific embodiment of the acetabular liner machining tool provided by this utility model, please refer to Figures 1 to 5 Multiple sets of limiting posts 1005 are arranged radially along the mounting base 1000 and are arranged on the same straight line.

[0041] For details, please refer to Figures 1 to 5 Multiple sets of limiting posts 1005 are arranged on the same straight line, radially along the mounting base 1000.

[0042] Optionally, multiple sets of limiting posts 1005 are arranged along the length direction of the intermediate transition surface 1010, the connecting line between the first transition surface 1002 and the second transition surface 1003 passes through the axis of the mounting base 1000, and the center of the limiting post 1005 is located on the connecting line between the first transition surface 1002 and the second transition surface 1003.

[0043] Optionally, two sets of limiting posts 1005 are provided. The two sets of limiting posts 1005 are arranged on the same straight line, both along the radial direction of the mounting base 1000 and along the length direction of the intermediate transition surface 1010. The two sets of limiting posts 1005 are symmetrically arranged and are respectively located near the left and right ends of the intermediate transition surface 1010.

[0044] Optionally, four sets of limiting posts 1005 are provided. The four sets of limiting posts 1005 are arranged on the same straight line, all along the radial direction of the mounting base 1000 and along the length direction of the intermediate transition surface 1010. The four sets of limiting posts 1005 are divided into two large groups, and the limiting posts 1005 of the two large groups are symmetrically arranged, respectively close to the left and right ends of the intermediate transition surface 1010.

[0045] Furthermore, the limiting posts 1005 can be selected according to the specifications of the acetabular liner being processed. The four sets of limiting posts 1005 are divided into two groups, with the two sets of limiting posts 1005 located on the same circumference centered on the mounting base 1000 forming one group. When the size of the acetabular liner to be processed is small, the limiting posts 1005 are installed in the two sets of limiting grooves on the inner circumference near the center of the mounting base 1000 to limit the acetabular liner, while the two sets of limiting grooves on the outer circumference away from the center of the mounting base 1000 are not installed. When the size of the acetabular liner to be processed is large, the limiting posts 1005 are installed in the two sets of limiting grooves on the outer circumference away from the center of the mounting base 1000 to limit the acetabular liner, while the two sets of limiting grooves on the inner circumference near the center of the mounting base 1000 are not installed.

[0046] Furthermore, the fixing seat has different specifications and sizes depending on the specifications and models of the acetabular liner being processed. It can be selected according to the actual situation to ensure that the acetabular liner is fixed stably and that the upper end surface of the acetabular liner to be processed is completely exposed.

[0047] As a specific embodiment of the acetabular liner machining tool provided by this utility model, please refer to Figures 1 to 5 A clearance groove 1008 is provided at the center of the upper surface of the mounting base 1000.

[0048] For details, please refer to Figures 1 to 5 The clearance groove 1008 is located at the center of the upper end face of the mounting base 1000. The clearance groove 1008 is a cylindrical groove. The axis of the clearance groove 1008 coincides with the axis of the mounting base 1000. The front side of the upper opening of the clearance groove 1008 is opened on the second mounting surface 1004. The middle side of the upper opening of the clearance groove 1008 is opened on the intermediate transition surface 1010. The rear side of the upper opening of the clearance groove 1008 is opened on the first mounting surface 1001.

[0049] Furthermore, the clearance groove 1008 can be a clearance hole, that is, the clearance hole is set through the upper and lower end faces of the mounting base 1000. The clearance groove 1008 facilitates the venting of air during the installation of the acetabular prosthesis, which is convenient for the installation of the acetabular prosthesis.

[0050] The inner diameter of the clearance groove 1008 is less than or equal to the inner diameter of the bottom surface of the acetabular prosthesis, which effectively supports the acetabular prosthesis and increases the stability of the support for the acetabular prosthesis.

[0051] When there are two sets of limit posts 1005, the two sets of limit posts 1005 are respectively set on the left and right sides of the clearance groove 1008.

[0052] When there are four sets of limit posts 1005, two sets of limit posts 1005 are set on the left side of the clearance groove 1008, and two sets of limit posts 1005 are set on the right side of the clearance groove 1008.

[0053] As a specific embodiment of the acetabular liner machining tool provided by this utility model, please refer to Figures 1 to 5 The projection of the inner sidewall of the recess 2002 onto the upper surface of the mounting base 1000 is located outside the limiting component.

[0054] For details, please refer to Figures 1 to 5 The limiting component includes multiple limiting posts 1005. The distance between the left end of the leftmost limiting post 1005 and the right end of the rightmost limiting post 1005 is less than the inner diameter of the relief groove 2002.

[0055] When the acetabular prosthesis is not installed on the mounting base 1000, and the tooling needs to be stored, the fixing base 2000 can be fastened to the upper end face of the mounting base 1000. At this time, the limiting component is located inside the relief groove 2002 of the fixing base 2000, so as to avoid interference between the limiting component and the fixing base 2000 and cause damage to the limiting component and / or the fixing base 2000.

[0056] As a specific embodiment of the acetabular liner machining tool provided by this utility model, please refer to Figures 1 to 5 The side wall of the mounting base 1000 is provided with a positioning groove 1007.

[0057] For details, please refer to Figures 1 to 5 The positioning groove 1007 is provided on the side wall of the mounting base 1000. The positioning groove 1007 is an open groove. The positioning groove 1007 is used to position the mounting base 1000. The positioning groove 1007 can be installed on other positioning fixtures to prevent the mounting base 1000 from rotating and slipping after installation, thereby increasing the stability of the mounting base 1000. At the same time, the position angle of the positioning groove 1007 relative to the upper end face of the mounting base 1000 is fixed. After the mounting base 1000 is installed and fixed through the positioning groove 1007, the position of the acetabular prosthesis placed on the upper end of the mounting base 1000 is also relatively fixed. The orientation of the limiting groove can be used to indicate the orientation of the high and low sides of the acetabular prosthesis.

[0058] The positioning groove 1007 is an open groove. The opening of the positioning groove 1007 is set on the side wall of the mounting base 1000. The bottom of the positioning groove 1007 opposite to its opening is set vertically. The bottom of the positioning groove 1007 can be set vertically or inclined.

[0059] The positioning groove 1007 has an upper side wall, a lower side wall, a left side wall and a right side wall, and the positioning groove 1007 is arranged radially along the mounting base 1000.

[0060] The positioning groove 1007 has an upper side wall and a lower side wall. The right end of the positioning groove 1007 has a right opening, and the left end of the positioning groove 1007 has a left opening. That is, the positioning groove 1007 is a through groove for both left and right sides, which facilitates the fixing of the mounting base 1000.

[0061] As a specific embodiment of the acetabular liner machining tool provided by this utility model, please refer to Figures 1 to 5 The bottom of the positioning groove 1007 is parallel to the vertical plane where the limiting component is located.

[0062] For details, please refer to Figures 1 to 5 The bottom of the positioning groove 1007 is vertically set, and the bottom of the positioning groove 1007 is parallel to the vertical plane where multiple sets of limiting posts 1005 are located. That is, the bottom of the positioning groove 1007 is parallel to the connecting line between the first transition surface 1002 and the second transition surface 1003. The direction of the positioning groove 1007 can be used to indicate the direction of the positioning post, which is convenient for determining the placement position of the acetabular prosthesis.

[0063] As a specific embodiment of the acetabular liner machining tool provided by this utility model, please refer to Figures 1 to 5 The positioning groove 1007 is located on the rear side wall of the mounting base 1000.

[0064] For details, please refer to Figures 1 to 5 The positioning groove 1007 is located below the first mounting surface 1001, and the center line of the horizontal direction of the positioning groove 1007 is located in the same vertical plane as the center line of the first mounting surface 1001. The center line of the positioning groove 1007 is arranged along the radial direction of the mounting base 1000. The positioning groove 1007 can be used to indicate the direction of the first mounting surface 1001, which facilitates the determination of the placement position of the acetabular prosthesis.

[0065] As a specific embodiment of the acetabular liner machining tool provided by this utility model, please refer to Figures 1 to 5 The inner diameter of the recess 2002 is smaller than the outer diameter of the upper end of the mounting base 1000.

[0066] For details, please refer to Figures 1 to 5 The inner diameter of the clearance groove 2002 is smaller than the inner diameter of the fixing groove 2001, that is, the inner diameter of the clearance groove 2002 is smaller than the outer diameter of the acetabular prosthesis. After the acetabular prosthesis is installed on the mounting seat 1000, the upper top wall of the fixing seat 2000 rests against the upper side wall of the acetabular prosthesis, and the fixing seat 2000 prevents the acetabular prosthesis from falling off the mounting seat 1000.

[0067] As a specific embodiment of the acetabular liner machining tool provided by this utility model, please refer to Figures 1 to 5 The inner side of the side wall of the fixed base 2000 is provided with an internal thread structure 2003, and the side wall of the mounting base 1000 is provided with an external thread structure 1009. The internal thread structure 2003 and the external thread structure 1009 are matched.

[0068] For details, please refer to Figures 1 to 5 The internal thread structure 2003 is set on the inner side wall of the fixing groove 2001 of the fixing seat 2000, and the external thread structure 1009 is set on the side wall of the mounting seat 1000 and located below the second mounting surface 1004. The fixing seat 2000 and the mounting seat 1000 are connected by threads, which makes the installation simple and convenient, improves the installation speed, and shortens the installation time.

[0069] Furthermore, the positioning groove 1007 is located below the external thread structure 1009 to prevent the positioning groove 1007 from affecting the installation of the fixing seat 2000 after it is installed and fixed.

[0070] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements 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 tooling for machining the acetabular liner, characterized in that, include: A mounting base for mounting an acetabular liner, the upper surface of the mounting base having a first mounting surface, an intermediate transition surface, and a second mounting surface. The first mounting surface is horizontally positioned, the intermediate transition surface connects the front end of the first mounting surface to the rear end of the second mounting surface, and the second mounting surface is inclined downwards relative to the first mounting surface. A limiting component is provided on the intermediate transition surface for limiting the position of the acetabular liner; and A fixing seat is used to fix the acetabular liner. The lower end face of the fixing seat is provided with a fixing groove. The fixing seat covers the upper end of the mounting seat. The upper end face of the fixing seat is provided with a relief groove, which is adapted to allow the upper end of the acetabular liner to pass through.

2. The acetabular liner machining tooling as described in claim 1, characterized in that, The limiting component includes multiple sets of limiting posts, which are adapted to penetrate into the limiting groove on the lower surface of the acetabular liner.

3. The acetabular liner machining tooling as described in claim 2, characterized in that, Multiple sets of the limiting posts are arranged radially along the mounting base and are arranged on the same straight line.

4. The acetabular liner machining tooling as described in claim 1, characterized in that, A clearance groove is provided at the center of the upper surface of the mounting base.

5. The acetabular liner machining tooling as described in claim 1, characterized in that, The projection of the inner wall of the clearance groove onto the upper surface of the mounting base is located outside the limiting component.

6. The acetabular liner machining tooling as described in claim 1, characterized in that, The mounting base has a positioning groove on its side wall.

7. The acetabular liner machining tooling as described in claim 6, characterized in that, The bottom of the positioning groove is parallel to the vertical plane where the limiting component is located.

8. The acetabular liner machining tooling as described in claim 6, characterized in that, The positioning groove is provided on the rear side wall of the mounting base.

9. The acetabular liner machining tooling as described in claim 1, characterized in that, The inner diameter of the clearance groove is smaller than the outer diameter of the upper end of the mounting base.

10. The acetabular liner machining tooling as described in claim 1, characterized in that, The inner side of the side wall of the fixed base is provided with an internal thread structure, and the side wall of the mounting base is provided with an external thread structure, wherein the internal thread structure matches the external thread structure.

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