Acetabular prosthesis

Abstract

The present invention provides an acetabular prosthesis connected to a bone structure, the acetabular prosthesis comprising: an acetabular outer cup having a cup top and a cup mouth; an extension structure, the position of the extension structure is adjustably arranged on the outside of the cup mouth; a reinforcement structure, the position of the reinforcement structure is adjustably arranged on the bone structure, the side of the first end of the reinforcement structure away from the bone structure is abutted and matched with the side of the extension structure facing the bone structure, and the side of the second end of the reinforcement structure facing the bone structure is abutted and matched with the bone structure. The technical solution of the present application effectively solves the problem in the related art that the acetabular outer cup cannot limit the acetabular reinforcement block.

Description

Technical Field

[0001] The present invention relates to the technical field of acetabular prostheses, and in particular to an acetabular prosthesis. Background Art

[0002] With economic development, the number of artificial hip replacement surgeries has increased year by year. Hip prosthesis replacement surgery is divided into primary replacement and revision replacement. Among them, the acetabular defects of patients with DDH type III in primary replacement and revision patients are relatively serious. When such patients undergo hip replacement, due to the severe bone defects in the pelvis and the lack of high-quality bone, a large area of ​​bone defect filling operation is required to restore the function of the hip joint. This type of hip replacement is also more complicated than the conventional hip replacement surgery process.

[0003] Currently, bone defects can be filled with autologous bone, allogeneic bone or bone cement, but none of them is the best solution. Autologous bone filling will destroy the patient's original bone quality, causing unnecessary trauma and pain to the patient; allogeneic bone filling will have rejection and cannot completely fuse with the human bone; and bone cement filling has a high rate of prosthesis loosening in clinical practice.

[0004] In the prior art, when designing the prosthesis, the acetabular cup is designed as a hemispherical surface, and the bone defect is filled with a separate acetabular filler. The metal acetabular outer cup cannot limit the position of the acetabular reinforcement block, causing the metal acetabular outer cup to loosen during movement, thereby causing the prosthesis to fail. Summary of the invention

[0005] The main purpose of the present invention is to provide an acetabular prosthesis to solve the problem in the related art that the acetabular outer cup cannot limit the position of the acetabular reinforcement block.

[0006] In order to achieve the above-mentioned purpose, the present invention provides an acetabular prosthesis for connection to a bone structure, the acetabular prosthesis comprising: an acetabular outer cup having a cup top and a cup mouth; an extension structure, the extension structure being adjustably arranged on the outside of the cup mouth; a reinforcement structure, the reinforcement structure being configured to be adjustably arranged on the bone structure, a side of the first end of the reinforcement structure away from the bone structure abuts and cooperates with a side of the extension structure facing the bone structure, and a side of the second end of the reinforcement structure facing the bone structure abuts and cooperates with the bone structure.

[0007] Further, the reinforcement structure includes a strip reinforcement block, the width of the first end of the strip reinforcement block is greater than the width of the second end of the strip reinforcement block, and / or the thickness of the first end of the strip reinforcement block is greater than the thickness of the second end of the strip reinforcement block.

[0008] Furthermore, the reinforcement structure further includes a protrusion, which is arranged on a side of the first end of the strip-shaped reinforcement block away from the bone structure, and the protrusion is in abutment with the extension structure.

[0009] Furthermore, the extension structure includes a connecting portion and an extension boss, the connecting portion is arranged on the acetabular outer cup, the extension boss is adjustably arranged on the connecting portion along the circumferential position of the acetabular outer cup, the side of the extension boss away from the center of the acetabular outer cup protrudes from the connecting portion, and the first end of the reinforcement structure abuts and cooperates with the side of the extension boss facing the bone structure.

[0010] Furthermore, the extension boss includes an arc-shaped extension plate, on which is provided an arc-shaped hole extending circumferentially along the acetabular outer cup, on which is provided a first mounting hole, and the extension structure also includes a first fixing member, which passes through the arc-shaped hole and is connected to the first mounting hole, and the first fixing member is locked and matched with the arc-shaped extension plate.

[0011] Furthermore, the connection part is swingably and adjustably arranged on the acetabular outer cup, and the swing axis of the connection part is arranged perpendicular to the axis of the acetabular outer cup.

[0012] Furthermore, the extension structure also includes an abutment portion arranged on the acetabular outer cup, which can drive the connecting portion to swing. The acetabular prosthesis also includes a fixing structure, which is arranged between the abutment portion and the acetabular outer cup to fix the abutment portion on the acetabular outer cup.

[0013] Furthermore, the abutment portion includes an arc-shaped adjustment plate, a first end of which is hingedly connected to the connection portion, the arc-shaped adjustment plate is slidably disposed on the acetabular outer cup along the outer surface of the acetabular outer cup, and the fixing structure can fix the arc-shaped adjustment plate on the acetabular outer cup.

[0014] Furthermore, an arc-shaped groove is arranged on the outer surface of the acetabulum outer cup, and the arc-shaped adjustment plate is slidably arranged in the arc-shaped groove, and the thickness of the arc-shaped adjustment plate is less than or equal to the depth of the arc-shaped groove.

[0015] Furthermore, the fixing structure includes a second fixing member, a second mounting hole and a plurality of third mounting holes, the second mounting hole is arranged on the arc-shaped adjustment plate, the plurality of third mounting holes are arranged at intervals at the bottom of the arc-shaped groove along the extension direction of the arc-shaped groove, the second fixing member passes through the second mounting hole and is connected to one of the plurality of third mounting holes.

[0016] Furthermore, the extension structure includes an abutment portion and a first connecting structure arranged on the abutment portion, the abutment portion is adjustably arranged on the outer surface of the acetabular outer cup, the first end of the reinforcement structure is abutted and matched with the abutment portion, and a second connecting structure is arranged on the outer surface of the acetabular outer cup, and the first connecting structure and the second connecting structure are adjustably and detachably matched.

[0017] Further, the abutment portion includes an arc-shaped adjustment plate, and the first connecting structure is arranged on the side of the arc-shaped adjustment plate facing the acetabular outer cup; a plurality of buckles are arranged on one of the first connecting structure and the second connecting structure, and a plurality of slots are arranged on the other, the number of the slots is greater than the number of the buckles, and the buckles and the slots are snap-fitted together, wherein the first connecting structure includes a plurality of buckles arranged at intervals, and the second connecting structure includes a plurality of slots arranged at intervals, and the buckles and the slots are plug-fitted together, or the first connecting structure includes a plurality of slots arranged at intervals, and the second connecting structure includes a plurality of buckles arranged at intervals, and the buckles and the slots are plug-fitted together.

[0018] By applying the technical solution of the present invention, the acetabular prosthesis is connected to the bone structure. The acetabular prosthesis includes an acetabular outer cup, an extension structure and a reinforcement structure. The acetabular outer cup has a cup top and a cup mouth. The extension structure is arranged on the outside of the cup mouth, and the position of the extension structure is adjustably arranged. The reinforcement structure is arranged on the bone structure, and the position of the reinforcement structure is adjustably arranged. The side of the first end of the reinforcement structure away from the bone structure abuts and cooperates with the side of the extension structure facing the bone structure. The side of the second end of the reinforcement structure facing the bone structure abuts and cooperates with the bone structure. Through the above-mentioned arrangement, the acetabular outer cup can be installed to the acetabular fossa. The position of the extension structure is adjustably arranged, so that the position of the extension structure can be adjusted according to the position of the reinforcement structure, and then the side of the first end of the reinforcement structure away from the bone structure can abut and cooperate with the side of the extension structure facing the bone structure, so that the extension structure can limit the position of the reinforcement structure. The position of the reinforcement structure is adjustable, so that when the acetabular prosthesis is installed, the installation position of the reinforcement structure can be determined according to the actual situation of the bone defect, and the position of the extension structure can be adjusted according to the position of the reinforcement structure, so that the reinforcement structure can be connected between the bone structure and the extension structure. Therefore, the technical solution of the present application effectively solves the problem that the acetabular outer cup in the related art cannot limit the acetabular reinforcement block. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0020] Figure 1 A schematic diagram of the three-dimensional structure of the acetabular prosthesis according to the first embodiment of the present invention is shown;

[0021] Figure 2 Shows Figure 1 A schematic diagram of the stereoscopic structure of the acetabular prosthesis from another perspective;

[0022] Figure 3 Shows Figure 1 A schematic diagram of the three-dimensional structure of the acetabular outer cup and the extension structure of the acetabular prosthesis;

[0023] Figure 4 Shows Figure 3 Schematic diagram of the exploded structure of the acetabular prosthesis;

[0024] Figure 5 Shows Figure 3 A schematic cross-sectional view of an acetabular prosthesis;

[0025] Figure 6 Shows Figure 3 A schematic diagram of the three-dimensional structure of the acetabular prosthesis after the extension structure is swung;

[0026] Figure 7 Shows Figure 3 A schematic diagram of the three-dimensional structure of the acetabular outer cup of the acetabular prosthesis;

[0027] Figure 8 Shows Figure 1 A schematic diagram of the three-dimensional structure of the reinforcement structure of the acetabular prosthesis;

[0028] Fig. 9 Shows Figure 8 A schematic side view of the reinforcement structure;

[0029] Fig.10 Shows Figure 8 Another perspective diagram of the three-dimensional structure of the reinforcement structure;

[0030] Fig.11 Shows Figure 1 Schematic diagram of the three-dimensional structure of the connection between the acetabular prosthesis and the bone structure;

[0031] Fig.12 Shows Figure 1 A schematic diagram of the three-dimensional structure of the petal structure of the acetabular outer cup of the acetabular prosthesis;

[0032] Fig.13 It shows a three-dimensional structural schematic diagram of the second embodiment of the acetabular prosthesis according to the present invention;

[0033] Fig.14 It shows a three-dimensional structural schematic diagram of the third embodiment of the acetabular prosthesis according to the present invention;

[0034] Fig.15 Shows Fig.14 A schematic diagram of the stereoscopic structure of the acetabular prosthesis from another perspective;

[0035] Fig.16 A schematic diagram of the three-dimensional structure of a fourth embodiment of the acetabular prosthesis according to the present invention is shown.

[0036] The above drawings include the following reference numerals:

[0037] 10. Acetabular outer cup; 11. Cup top; 12. Cup mouth; 13. Arc-shaped groove; 14. Outer cup body; 15. Protruding ball portion; 20. Extension structure; 21. Connecting portion; 211. First mounting hole; 22. Extended boss; 221. Arc-shaped extension plate; 2211. Arc-shaped hole; 23. First fixing member; 24. Abutment portion; 241. Arc-shaped adjustment plate; 30. Reinforcement structure; 31. Strip reinforcement block; 32. Raised portion; 40. Fixing structure; 41. Second fixing member; 42. Second mounting hole; 43. Third mounting hole. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] 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 form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0040] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0041] like Figure 1 and Figure 2As shown, the acetabular prosthesis of the first embodiment is used to be connected to the bone structure, and the acetabular prosthesis includes: an acetabular outer cup 10, an extension structure 20 and a reinforcement structure 30. The acetabular outer cup 10 has a cup top 11 and a cup mouth 12. The extension structure 20 is adjustably arranged on the outside of the cup mouth 12. The reinforcement structure 30 is configured to be adjustably arranged on the bone structure, and the side of the first end of the reinforcement structure 30 away from the bone structure is abutted and matched with the side of the extension structure 20 facing the bone structure, and the side of the second end of the reinforcement structure 30 facing the bone structure is abutted and matched with the bone structure.

[0042] The technical solution of the first embodiment is applied, and the acetabular prosthesis is connected to the bone structure. The acetabular prosthesis includes an acetabular outer cup 10, an extension structure 20 and a reinforcement structure 30. The acetabular outer cup 10 has a cup top 11 and a cup mouth 12. The extension structure 20 is arranged on the outside of the cup mouth 12, and the position of the extension structure 20 is adjustable. The reinforcement structure 30 is arranged on the bone structure, and the position of the reinforcement structure 30 is adjustable. The side of the first end of the reinforcement structure 30 away from the bone structure abuts and cooperates with the side of the extension structure 20 facing the bone structure. The side of the second end of the reinforcement structure 30 facing the bone structure abuts and cooperates with the bone structure. Through the above arrangement, the acetabular outer cup 10 can be installed in the acetabular fossa. The extension structure 20 is adjustable in position, so that the position of the extension structure 20 can be adjusted according to the position of the reinforcement structure 30, and then the side of the first end of the reinforcement structure 30 away from the bone structure can abut and cooperate with the side of the extension structure 20 facing the bone structure, so that the extension structure can limit the position of the reinforcement structure. The position of the reinforcement structure 30 is adjustable, so that when the acetabular prosthesis is installed, the installation position of the reinforcement structure 30 can be determined according to the actual situation of the bone defect, and the position of the extension structure 20 can be adjusted according to the position of the reinforcement structure 30, so that the reinforcement structure 30 can be connected between the bone structure and the extension structure. Therefore, the technical solution of the first embodiment effectively solves the problem that the acetabular outer cup in the related art cannot limit the acetabular reinforcement block.

[0043] like Figure 1 , Figure 2 as well as Figures 8 to 11 As shown, in the first embodiment, the reinforcement structure 30 includes a strip reinforcement block 31, the width of the first end of the strip reinforcement block 31 is greater than the width of the second end of the strip reinforcement block 31, and the thickness of the first end of the strip reinforcement block 31 is greater than the thickness of the second end of the strip reinforcement block 31. Through the above-mentioned configuration, the first end of the strip reinforcement block 31 can be more stably abutted against the extension structure 20, and the strip reinforcement block 31 also has a better structural strength. When the second end of the strip reinforcement block 31 contacts the bone structure, less bone structure can be removed, providing a larger contact area with the bone structure to facilitate bone ingrowth and provide long-term stability.

[0044] like Figure 8and Fig. 9 As shown, in the first embodiment, the reinforcement structure 30 further includes a protrusion 32, which is arranged on the side of the first end of the strip reinforcement block 31 away from the bone structure, and the protrusion 32 abuts against the extension structure 20. Through the above arrangement, the reinforcement structure 30 can abut against the extension structure 20 more stably, which is convenient for the use of the acetabular prosthesis.

[0045] like Figures 3 to 6 As shown, in the first embodiment, the extension structure 20 includes a connection portion 21 and an extension boss 22. The connection portion 21 is arranged on the acetabular outer cup 10, and the extension boss 22 is adjustably arranged on the connection portion 21 along the circumferential position of the acetabular outer cup 10. The side of the extension boss 22 away from the center of the acetabular outer cup 10 protrudes from the connection portion 21, and the first end of the reinforcement structure 30 abuts and cooperates with the side of the extension boss 22 facing the bone structure. The connection portion 21 can be connected between the acetabular outer cup 10 and the extension boss 22. The side of the extension boss 22 away from the center of the acetabular outer cup 10 protrudes from the connection portion 21, so that the first end of the reinforcement structure 30 abuts against the extension boss 22. The extension boss 22 is adjustably arranged along the circumferential position of the acetabular outer cup 10, so that the extension boss 22 can be adjusted according to the position of the reinforcement structure 30, so that the abutment between the reinforcement structure 30 and the extension boss 22 is more stable.

[0046] It should be noted that the connecting portion 21 includes a connecting plate, and the connecting plate has a crescent shape.

[0047] like Figure 4 As shown, in the first embodiment, the extension boss 22 includes an arc-shaped extension plate 221, and the arc-shaped extension plate 221 is provided with an arc-shaped hole 2211 extending along the circumference of the acetabular outer cup 10, and the connecting portion 21 is provided with a first mounting hole 211, and the extension structure 20 also includes a first fixing member 23, and the first fixing member 23 passes through the arc-shaped hole 2211 and is connected to the first mounting hole 211, and the first fixing member 23 is locked and matched with the arc-shaped extension plate 221. The provision of the arc-shaped extension plate 221 facilitates the adjustment of the circumferential position of the arc-shaped extension plate 221 along the acetabular outer cup 10. When the position of the arc-shaped extension plate 221 needs to be adjusted, the arc-shaped hole 2211 is provided, so that the arc-shaped hole 2211 can move relative to the first fixing member 23, and then the position of the arc-shaped extension plate 221 can be adjusted. After the position of the arc-shaped extension plate 221 is adjusted, the first fixing member 23 can fix the arc-shaped extension plate 221 to the connecting portion 21.

[0048] like Figure 6As shown, in the first embodiment, the connection part 21 is swingably arranged on the acetabular outer cup 10, and the swing axis of the connection part 21 is arranged perpendicularly to the axis of the acetabular outer cup 10. Through the above arrangement, the connection part 21 can be swung, and the swing axis of the connection part 21 is arranged perpendicularly to the axis of the acetabular outer cup 10, so that it is convenient to determine the position of the arc extension plate 221 according to the actual installation position of the reinforcement structure 30, and then the position of the connection part 21 can be determined according to the position of the arc extension plate 221.

[0049] like Figures 4 to 6 As shown, in the first embodiment, the extension structure 20 further includes an abutment portion 24 disposed on the acetabular outer cup 10, and the abutment portion 24 can drive the connection portion 21 to swing, and the acetabular prosthesis further includes a fixing structure 40, which is disposed between the abutment portion 24 and the acetabular outer cup 10 to fix the abutment portion 24 on the acetabular outer cup 10. By providing the abutment portion 24, the connection portion 21 can be more easily swung, and after the connection portion 21 swings relative to the acetabular outer cup 10, the fixing structure 40 can fix the abutment portion 24 to the acetabular outer cup 10, so as to prevent the position of the connection portion 21 from moving, and also prevent the position of the arc-shaped extension plate 221 from moving.

[0050] like Figure 6 As shown, in the first embodiment, the abutting portion 24 includes an arc-shaped adjustment plate 241, a first end of the arc-shaped adjustment plate 241 is hingedly connected to the connecting portion 21, the arc-shaped adjustment plate 241 is slidably arranged on the acetabular outer cup 10 along the outer surface of the acetabular outer cup 10, and the fixing structure 40 can fix the arc-shaped adjustment plate 241 on the acetabular outer cup 10. When the arc-shaped adjustment plate 241 slides on the acetabular outer cup 10, since the first end of the arc-shaped adjustment plate 241 is hingedly connected to the connecting portion 21, it is convenient for the connecting portion 21 to swing relative to the arc-shaped adjustment plate 241, and the connecting portion 21 is hingedly connected to the acetabular outer cup 10, so that the connecting portion 21 can swing relative to the acetabular outer cup 10.

[0051] It should be noted that the connecting portion 21 and the arc-shaped adjustment plate 241 are connected via a connecting pin.

[0052] like Figure 7 As shown, in the first embodiment, an arcuate groove 13 is provided on the outer surface of the acetabular outer cup 10, and an arcuate adjustment plate 241 is slidably provided in the arcuate groove 13, and the thickness of the arcuate adjustment plate 241 is less than or equal to the depth of the arcuate groove 13. The arcuate groove 13 can guide the sliding of the arcuate adjustment plate 241. The thickness of the arcuate adjustment plate 241 is less than or equal to the depth of the arcuate groove 13, so that in the thickness direction of the arcuate adjustment plate 241, the arcuate adjustment plate 241 will not protrude from the arcuate groove 13, thereby reducing the space occupied by the acetabular prosthesis.

[0053] like Figure 4 and Figure 7 As shown, in the first embodiment, the fixing structure 40 includes a second fixing member 41, a second mounting hole 42 and a plurality of third mounting holes 43. The second mounting hole 42 is provided on the arc-shaped adjustment plate 241. The plurality of third mounting holes 43 are provided at intervals along the extension direction of the arc-shaped groove 13 at the groove bottom of the arc-shaped groove 13. The second fixing member 41 passes through the second mounting hole 42 and is connected to one of the plurality of third mounting holes 43. After the position of the arc-shaped adjustment plate 241 is moved, the second fixing member 41 can pass through the second mounting hole 42 and be connected to one of the plurality of third mounting holes 43, so that the connection between the arc-shaped adjustment plate 241 and the acetabular outer cup 10 can be achieved.

[0054] The difference between the second embodiment and the first embodiment is that the epitaxial structure 20 of the second embodiment does not include the connecting portion 21 and the extending boss 22 , and the epitaxial structure 20 of the second embodiment includes an abutting top portion.

[0055] like Fig.13 As shown, in the second embodiment, the extension structure 20 includes an abutment top and a first connection structure arranged on the abutment top, the abutment top is adjustably arranged on the outer surface of the acetabular outer cup 10, the first end of the reinforcement structure 30 is in abutment with the abutment top, and a second connection structure is arranged on the outer surface of the acetabular outer cup 10, and the first connection structure and the second connection structure are adjustably and detachably matched. The first connection structure and the second connection structure are adjustably and detachably matched, so that the installation position of the abutment top can be determined according to the actual installation position of the reinforcement structure. After the abutment top is in position, the first connection structure and the second connection structure are connected, so that the connection between the abutment top and the acetabular outer cup can be realized.

[0056] In the second embodiment, the abutment top includes an arc-shaped connecting plate, and the first connecting structure is arranged on the side of the arc-shaped connecting plate facing the acetabular outer cup 10. A plurality of buckles are arranged on the first connecting structure, and a plurality of slots are arranged on the second connecting structure, the number of the slots is greater than the number of buckles, and the buckles and the slots are snap-fitted. The first connecting structure includes a plurality of buckles arranged at intervals, and the second connecting structure includes a plurality of slots arranged at intervals, and the buckles and the slots are plug-fitted. The buckles can be inserted into the slots and snap-fitted with the slots, thereby realizing the connection between the abutment top and the acetabular outer cup.

[0057] Of course, in other embodiments, the first connection structure includes a plurality of slots disposed at intervals, and the second connection structure includes a plurality of buckles disposed at intervals, and the buckles are plugged into and matched with the slots.

[0058] The material of the acetabular outer cup 10 is metal. The acetabular outer cup 10 includes an outer cup body 14 and a convex ball portion 15 arranged on the outer cup body 14. The outer cup body 14 and the convex ball portion 15 are integrally formed, which can fill the part of the acetabular fossa where the bone defect is serious, fill the bone defect to the greatest extent, and reduce the friction and micro-motion caused by assembly and use.

[0059] The extended boss 22 is designed to be cut outwardly with the side of the outer cup body 14 and has no sharp edges. The design of the extended boss 22 can limit the strip reinforcement block 31 after the acetabular outer cup 10 and the strip reinforcement block 31 are implanted at the same time to prevent the strip reinforcement block 31 from being pried out or falling off, resulting in failure of the acetabular prosthesis implantation.

[0060] The distance between the side of the convex ball portion 15 away from the cup top 11 and the side of the cup mouth portion 12 away from the cup top 11 is between 2 mm and 3 mm (can be 2 mm, 2.5 mm or 3 mm), which makes the distance between the convex ball portion 15 and the bone structure smaller, thereby making the connection between the acetabular outer cup 10 and the bone structure more stable.

[0061] The combined structure of the extension boss 22 and the acetabular outer cup 10 can adjust the matching angle between the extension boss 22 and the acetabular outer cup 10 as needed, and select the required width, thickness and angle of the extension boss 22 accessories according to the use requirements. The extension boss 22 and the acetabular outer cup 10 can be locked by the first fixing member 23, and can also be locked with the acetabular outer cup 10 by the first connecting structure. The extension boss 22 can be adjusted to the required position as needed, and locked with the extension boss 22 by screws.

[0062] like Fig.12 As shown, a petal structure is provided on the acetabular outer cup 10, and the petal structure is provided on the outer cup body 14. The depth of the petal structure is between 0.2 mm and 0.45 mm, and an annular groove is designed on the cup mouth of the acetabular outer cup 10 to connect the surrounding petal structure. Through the cover plate structure, after the acetabular outer cup and the acetabular liner are assembled, the acetabular liner is constrained to move up and down. The draft angle of the petal is 7° to 11°, and the draft angle at the arc of the cover plate is -7° to -11°. The cover plate is connected to the acetabular outer cup through a wedge structure.

[0063] The depth of the petal structure can be 0.2mm, 0.3mm, 0.4mm or 0.45mm. The draft angle of the petals can be 7°, 9° or 11°, and the draft angle at the arc of the cover plate can be -7°, 9° or -11°. This makes the contact between the petal structure and the cover plate structure more stable.

[0064] The acetabular outer cup 10 is designed with an 18.9° inner cone, and a limited semicircular petal structure is designed on the cup mouth 12, so that the acetabular outer cup 10 can be used in combination with an acetabular liner made of polyethylene material or a liner made of ceramic material, which can be flexibly selected according to the needs during surgery.

[0065] The part of the acetabular outer cup 10 that contacts the bone and the part of the strip reinforcement block 31 that contacts the bone are both porous structures, which can ensure that the part of the bone structure that contacts the prosthesis after implantation achieves bone ingrowth.

[0066] The strip reinforcement block 31 is designed with a screw hole, which is an oblique hole design, and the angle of the screw hole (the angle between the axis of the screw hole and the axis of the outer cup body 14) is between 10° and 45°, which can ensure that the screw has the maximum contact area with the bone structure. The angle of the screw hole can be 10°, 15°, 30°, 35°, 40° or 45°. This makes the contact between the strip reinforcement block 31 and the bone structure more stable.

[0067] The bone contact surface of the strip reinforcement block 31 is designed with an arc and an oblique angle, so that the strip reinforcement block 31 and the pelvis can obtain a larger contact surface.

[0068] Special tools are designed for the treatment of bone structures, such as bone drills, limit guide sleeves and curved bone files. When treating the pelvis, the bone drill needs to be connected to an electric tool, which can effectively improve the treatment efficiency. The limit guide sleeve can play a role in depth limitation and guidance during the bone drill treatment process. Its handle is a double-arc design, which is ergonomic and very comfortable to use.

[0069] Due to the special-shaped structure of the pelvis, there are still some parts of the pelvis that have been processed by the bone drill that are not processed properly. The curved bone rasp is used for further manual processing. The sawtooth part of the curved bone rasp is designed as a reverse arc structure. When processing the special-shaped structure of the pelvis, the cutting angle of the reverse arc can be adjusted to ensure that every angle can be processed.

[0070] The diameter of the bone drill is 3mm to 8mm (can be 3mm, 5mm, 6mm, 7mm or 8mm), the height of the drill bit is 8mm to 15mm (can be 8mm, 9mm, 10mm, 12mm or 15mm), and the bone drill is used to remove the cortical bone portion of the pelvis that is to be in contact with the strip reinforcement block. The inner diameter of the limiting guide sleeve is 3.5mm to 8.5mm (can be 3.5mm, 4mm, 5mm, 6mm or 8mm), and the height is 6.5mm to 13.5mm (can be 6.5mm, 7mm, 9mm, 10mm, 11mm or 13mm). The limiting guide sleeve cooperates with the bone drill when used and matches the drill bit of the bone drill. The height of the sleeve can limit the maximum depth of bone removal by the bone drill to 1.5mm.

[0071] The handle design of the sleeve can guide the bone drill. The curved bone rasp is used for manual grinding of the untreated part of the pelvis that has been treated by the bone drill to obtain a relatively rough surface with exposed cancellous bone, which is convenient for the ingrowth of the acetabular reinforcement block.

[0072] The material of the acetabular outer cup 10 can be titanium alloy or tantalum, etc., and it is processed by 3D printing integrated molding technology. The surface is designed with a porous trabecular structure. The thickness of the porous trabecular structure is: 0.8mm to 7mm (can be 0.8mm, 1mm, 2mm, 3mm, 5mm or 7mm), and the porosity is: 15% to 95% (can be 15%, 30%, 50%, 70%, 90% or 95%). The outer cup body 14 is spherical in shape (with a diameter between 36mm and 70mm, which can be 36mm, 40mm, 50mm, 60mm, 65mm or 70mm), and a convex spherical structure (i.e., a convex ball part 15, with a diameter between 32mm and 70mm, which can be 32mm, 35mm, 40mm, 50mm, 55mm, 60mm or 70mm) is attached to one side. The convex ball is designed to fill the defect of the acetabular fossa. The side wall of the outer cup body 14 is designed with circumferentially distributed screw holes, so as to facilitate selecting the best position for screw locking during implantation.

[0073] The extension boss 22 is designed to be tangent to the outer circle of the outer cup body 14 and has no sharp edges. The diameter is between 28mm and 68mm (can be 28mm, 30mm, 40mm, 50mm, 60mm, 65mm or 68mm), and the maximum outer extension is between 4mm and 10mm (that is, the maximum distance between the side of the extension boss 22 away from the center of the acetabular outer cup 10 and the outer surface of the acetabular outer cup 10 can be 4mm, 5mm, 6mm, 7mm, 9mm or 10mm), the thickness of the extension boss 22 is 2mm-3mm (can be 2mm, 2.5mm or 3mm), and the extension boss 22 can be designed with an inclination angle of 0 to 15° (can be 0°, 5°, 10° or 15°).

[0074] The strip reinforcement block 31 can be made of titanium alloy, cobalt-chromium-molybdenum alloy or tantalum, etc., and is processed by 3D printing integrated molding technology. The first end of the strip reinforcement block 31 is designed with a concave ball shape on the side facing the acetabular outer cup 10, which is used in conjunction with the convex ball part 15 of the acetabular outer cup 10. The length of the strip reinforcement block 31 is 30mm-80mm.

[0075] The strip reinforcement block 31 can be designed to have a porous structure throughout the entire surface, or it can be a solid structure away from the bone structure plane and a porous structure toward the bone structure plane. The porous structure portion has a thickness of 0.8mm to 7mm (can be 0.8mm, 1mm, 2mm, 3mm, 5mm or 7mm), and a porosity of 15% to 95% (can be 15%, 30%, 50%, 70%, 90% or 95%). The strip reinforcement block 31 is designed with a plurality of screw holes, each with an inclination angle of 5° to 60° (can be 5°, 10°, 15°, 30°, 35°, 50° or 60°), ensuring that the screws pass through thicker bone, which can provide the strip reinforcement block 31 with better initial stability.

[0076] The difference between Example 3 and Example 1 is that the outer cup body 14 and the convex ball part 15 in Example 3 are designed as split structures, and the extension structure 20 of Example 3 only includes an extended boss 22, and the extended boss 22 is connected to the side of the convex ball part 15 away from the cup top 11 through a screw. The screw is screwed into the pelvis, which can give the reinforced structure 30 initial stability.

[0077] like Fig.14 and Fig.15 As shown, in the third embodiment, the outer cup body 14 and the convex ball portion 15 are designed as separate structures.

[0078] like Fig.16 As shown, the difference between the fourth embodiment and the first embodiment is that the acetabular outer cup in the fourth embodiment further includes an inclined portion, which has an anti-slip function to prevent the acetabular liner from falling off from the acetabular outer cup. The extension structure is arranged on the inclined portion. The inclined portion has an inclination angle of 0 to 25°, and can be used together with an acetabular liner with an inclined high edge, and has a better anti-prying function for the acetabular liner with an inclined high edge.

[0079] The inclined portion has an inclination angle of 0 to 25°, which means that the angle between the plane where the side of the inclined portion close to the cup mouth portion 12 is located and the plane where the cup mouth portion 12 is located is between 0 and 25°. Specifically, the inclined portion has an inclination angle of 1°, 5°, 10°, 15°, 20° or 25°.

[0080] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0081] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0082] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0083] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An acetabular prosthesis for connection to a bone structure, characterized in that: The acetabular prosthesis comprises: An acetabular outer cup (10) having a cup top (11) and a cup mouth (12); an epitaxial structure (20), the epitaxial structure (20) being arranged on the outer side of the cup mouth (12) in an adjustable manner; A reinforcing structure (30), wherein the reinforcing structure (30) is configured to be arranged on the bone structure in an adjustable manner, wherein a side of a first end of the reinforcing structure (30) away from the bone structure abuts against a side of the extension structure (20) facing the bone structure, and a side of a second end of the reinforcing structure (30) facing the bone structure abuts against the bone structure; The extension structure (20) comprises a connecting portion (21) and an extension boss (22), wherein the connecting portion (21) is arranged on the acetabular outer cup (10), and the extension boss (22) is adjustably arranged on the connecting portion (21) along the circumferential position of the acetabular outer cup (10), and a side of the extension boss (22) away from the center of the acetabular outer cup (10) protrudes from the connecting portion (21), and a side of the first end of the reinforcement structure (30) away from the bone structure is in abutment with a side of the extension boss (22) facing the bone structure; The connecting portion (21) is arranged on the acetabular outer cup (10) in a swingable and adjustable manner, and the swing axis of the connecting portion (21) is arranged perpendicular to the axis of the acetabular outer cup (10).

2. The acetabular prosthesis according to claim 1, characterized in that: The reinforcement structure (30) comprises a strip reinforcement block (31), the width of a first end of the strip reinforcement block (31) being greater than the width of a second end of the strip reinforcement block (31), and / or the thickness of the first end of the strip reinforcement block (31) being greater than the thickness of the second end of the strip reinforcement block (31).

3. The acetabular prosthesis according to claim 2, characterized in that: The reinforcement structure (30) further comprises a protrusion (32), wherein the protrusion (32) is arranged on a side of the first end of the strip-shaped reinforcement block (31) away from the bone structure, and the protrusion (32) is in abutment with the extension structure (20).

4. The acetabular prosthesis according to claim 1, characterized in that: The extension boss (22) comprises an arc-shaped extension plate (221), the arc-shaped extension plate (221) is provided with an arc-shaped hole (2211) extending along the circumference of the acetabular outer cup (10), the connecting portion (21) is provided with a first mounting hole (211), the extension structure (20) further comprises a first fixing member (23), the first fixing member (23) passes through the arc-shaped hole (2211) and is connected to the first mounting hole (211), and the first fixing member (23) is locked and matched with the arc-shaped extension plate (221).

5. The acetabular prosthesis according to claim 1, characterized in that: The extension structure (20) further includes an abutment portion (24) disposed on the acetabular outer cup (10), wherein the abutment portion (24) can drive the connection portion (21) to swing, and the acetabular prosthesis further includes a fixing structure (40), wherein the fixing structure (40) is disposed between the abutment portion (24) and the acetabular outer cup (10) so as to fix the abutment portion (24) on the acetabular outer cup (10).

6. The acetabular prosthesis according to claim 5, characterized in that: The abutting portion (24) comprises an arc-shaped adjustment plate (241), a first end of the arc-shaped adjustment plate (241) being hingedly connected to the connecting portion (21), the arc-shaped adjustment plate (241) being slidably disposed on the acetabular outer cup (10) along the outer surface of the acetabular outer cup (10), and the fixing structure (40) is capable of fixing the arc-shaped adjustment plate (241) on the acetabular outer cup (10).

7. The acetabular prosthesis according to claim 6, characterized in that: An arc-shaped groove (13) is provided on the outer surface of the acetabular outer cup (10), the arc-shaped adjustment plate (241) is slidably arranged in the arc-shaped groove (13), and the thickness of the arc-shaped adjustment plate (241) is less than or equal to the depth of the arc-shaped groove (13).

8. The acetabular prosthesis according to claim 7, characterized in that: The fixing structure (40) comprises a second fixing member (41), a second mounting hole (42) and a plurality of third mounting holes (43); the second mounting hole (42) is arranged on the arc-shaped adjustment plate (241); the plurality of third mounting holes (43) are arranged at intervals at the bottom of the arc-shaped groove (13) along the extension direction of the arc-shaped groove (13); the second fixing member (41) passes through the second mounting hole (42) and is connected to one of the plurality of third mounting holes (43).

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