Acetabulum patch prosthesis

Abstract

The invention provides an acetabulum patch prosthesis, which comprises a base part, a first force bearing concave surface, a second force bearing concave surface and a connecting part, the adjusting part is adjustably arranged on the end wall of the base part, and a second force bearing concave surface corresponding to the first force bearing concave surface is arranged on the side wall of the adjusting part; and the adjusting structure is arranged between the base part and the adjusting part so as to adjust the distance between the base part and the adjusting part. According to the technical scheme, the problem that the universality of the acetabular patch prosthesis in the related technology is poor is effectively solved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to an acetabulum patch prosthesis. Background Art

[0002] Hip replacement surgery can effectively eliminate pain, correct hip deformity, and restore functional mobility. However, for patients with large acetabular defects or severe osteoporosis, ensuring the stable implantation of the acetabular cup prosthesis is a key challenge.

[0003] In order to improve the stability of the acetabular cup after implantation, an acetabular patch is usually used to fill the acetabular fossa, thereby limiting the position of the acetabular cup.

[0004] In the Xiangguan technique, different bone defect conditions require the use of acetabular patches of different heights, which requires the preparation of multiple acetabular patches of different sizes. This results in poor versatility of acetabular patches and their inability to adapt to different bone defect conditions. Summary of the Invention

[0005] The main purpose of the present invention is to provide an acetabular patch prosthesis to solve the problem of poor versatility of acetabular patch prostheses in the related art.

[0006] In order to achieve the above-mentioned purpose, the present invention provides an acetabulum patch prosthesis, comprising: a base portion, a first load-bearing concave surface being provided on the side wall of the base portion; an adjustment portion, which is adjustably arranged on the end wall of the base portion, and a second load-bearing concave surface corresponding to the first load-bearing concave surface being provided on the side wall of the adjustment portion; and an adjustment structure, which is arranged between the base portion and the adjustment portion to adjust the distance between the base portion and the adjustment portion.

[0007] Furthermore, the adjustment structure includes an adjustment rod and an adjustment hole. A limit member is provided on the adjustment rod, and the limit member can cooperate with the inner wall of the adjustment hole to limit the position. One of the adjustment rod and the adjustment hole is provided on the base part, and the other of the adjustment rod and the adjustment hole is provided on the adjustment part.

[0008] Furthermore, the limiting member includes a swinging tooth, the swinging tooth includes a main body section and a tooth section, the main body section is hingedly connected to the adjusting rod, or the connection between the main body section and the tooth section is hingedly connected to the adjusting rod, and the direction of the rotation axis of the swinging tooth is perpendicular to the axial direction of the adjusting rod.

[0009] Furthermore, the swinging tooth has a recovery position and an outward swing position. When the swinging tooth is in the recovery position, the main body section is in contact with the adjusting rod. When the swinging tooth is in the outward swing position, there is a gap between the main body section and the adjusting rod. The center of gravity of the swinging tooth is located between the end of the tooth section away from the main body section and the rotation axis of the swinging tooth.

[0010] Further, the distance between the tooth segment and the axis of the adjusting rod gradually decreases from the tooth segment to the main body segment when the swing tooth is in the recovery position.

[0011] Further, a plurality of limiting annular portions are arranged in the adjusting hole, and the tooth segment is limited by one of the plurality of limiting annular portions.

[0012] Further, the limiting annular portion comprises a first surface and a second surface from the adjusting portion to the base portion, and the inner edge of the first surface and the inner edge of the second surface are connected, and the outer edge of the first surface and the outer edge of the second surface are connected with the inner wall of the adjusting hole.

[0013] Further, the first surface has a first included angle a with the axis of the adjusting hole, and the second surface has a second included angle b with the axis of the adjusting hole, and the first included angle a and the second included angle b satisfy: 0.4≤a / b≤0.75.

[0014] Further, the plurality of limiting annular portions are arranged at equal intervals, and the inner edge of the second surface of the first limiting annular portion and the inner edge of the first limiting annular portion of the second limiting annular portion have a first distance c from the adjusting portion to the base portion, and the outer edge of the second surface of the first limiting annular portion and the outer edge of the first limiting annular portion of the second limiting annular portion have a second distance d, and the first distance c and the second distance d satisfy: 1.2≤c / d≤1.6.

[0015] Further, the acetabular patch prosthesis further comprises a guide structure, and the guide structure comprises a guide hole and a guide rod, one of the guide hole and the guide rod is arranged on the base portion, and the other of the guide hole and the guide rod is arranged on the adjusting portion.

[0016] Further, a first connecting through hole is arranged on the base portion, a second connecting through hole is arranged on the adjusting portion, the first connecting through hole and the second connecting through hole are arranged correspondingly, and the first connecting through hole and the adjusting structure are arranged at intervals.

[0017] The technical scheme of the application is characterized in that the side wall of the base part is provided with a first force-bearing concave surface, the side wall of the adjusting part is provided with a second force-bearing concave surface, the second force-bearing concave surface and the first force-bearing concave surface are correspondingly arranged, and the adjusting part is adjustably arranged on the end wall of the base part. The adjusting structure is arranged between the base part and the adjusting part. Through the above arrangement, the first force-bearing concave surface and the second force-bearing concave surface can support the acetabular cup, thereby limiting the acetabular cup and making the position of the acetabular cup more stable. At the same time, under the action of the adjusting structure, the distance between the adjusting part and the base part can be changed, thereby enabling the acetabular patch prosthesis to adapt to different bone defect conditions. Therefore, the technical scheme of the application effectively solves the problem of poor universality of the acetabular patch prosthesis in the related art. BRIEF DESCRIPTION OF DRAWINGS

[0018] The drawings accompanying the specification of this application form a part thereof, serve to provide further understanding of the application, and together with the description, explain the application. The embodiments of the application and its description are used to explain the application without imposing any undue limitation on the application. In the drawings:

[0019] Figure 1 An exploded structural schematic view of an embodiment of the acetabular patch prosthesis according to the application is shown;

[0020] Figure 2 An exploded structural schematic view of another view of the acetabular patch prosthesis of Figure 1 is shown;

[0021] Figure 3 A side view schematic view of the acetabular patch prosthesis of Figure 1 is shown;

[0022] Figure 4 A bottom view schematic view of the acetabular patch prosthesis of Figure 1 is shown;

[0023] Figure 5 A partial sectional view schematic view of the adjusting hole of the acetabular patch prosthesis of Figure 1 is shown;

[0024] Figure 6 A partial enlarged view of A of the adjusting hole of Figure 5 is shown;

[0025] Figure 7 A sectional view schematic view of the adjusting rod of the acetabular patch prosthesis of Figure 1 is shown;

[0026] Figure 8 A structural schematic view of the adjusting rod and the adjusting hole assembly of the acetabular patch prosthesis of Figure 1 is shown;

[0027] Figure 9 A structural schematic view of the adjusting rod and the adjusting hole assembly of the acetabular patch prosthesis of Figure 1Schematic diagram of the structure of the acetabular patch prosthesis after implantation.

[0028] The above drawings include the following reference numerals:

[0029] 10. Base portion; 11. First load-bearing concave surface; 12. First connecting through hole;

[0030] 20. Adjusting portion; 21. Second load-bearing concave surface; 22. Second connecting through hole;

[0031] 30. Adjustment structure; 31. Adjustment rod; 32. Adjustment hole; 321. Position-limiting ring portion; 3211. First surface; 3212. Second surface; 33. Position-limiting member; 331. Swinging tooth; 3311. Main body segment; 3312. Tooth segment;

[0032] 40. Guide structure; 41. Guide hole; 42. Guide rod. DETAILED DESCRIPTION

[0033] The following will be combined with the accompanying 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 embodiments described 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 in no way 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 making creative efforts are within the scope of protection of the present invention.

[0034] 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, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0035] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods 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 the exemplary embodiments can have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, and therefore, once an item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0036] like Figures 1 to 3 as well as Figure 9 As shown, in this embodiment, the acetabular patch prosthesis includes: a base portion 10, an adjustment portion 20, and an adjustment structure 30. A first load-bearing concave surface 11 is provided on the side wall of the base portion 10. The adjustment portion 20 is adjustably disposed on the end wall of the base portion 10, and a second load-bearing concave surface 21 corresponding to the first load-bearing concave surface 11 is provided on the side wall of the adjustment portion 20. The adjustment structure 30 is disposed between the base portion 10 and the adjustment portion 20 to adjust the distance between the base portion 10 and the adjustment portion 20.

[0037] Applying the technical solution of this embodiment, a first load-bearing concave surface 11 is provided on the side wall of the base portion 10, and a second load-bearing concave surface 21 is provided on the side wall of the adjustment portion 20. The second load-bearing concave surface 21 and the first load-bearing concave surface 11 are provided correspondingly, and the adjustment portion 20 is adjustably provided on the end wall of the base portion 10. The adjustment structure 30 is provided between the base portion 10 and the adjustment portion 20. Through the above-mentioned arrangement, the first load-bearing concave surface 11 and the second load-bearing concave surface 21 can support the acetabular cup, thereby limiting the acetabular cup and making the position of the acetabular cup more stable. At the same time, under the action of the adjustment structure 30, the distance between the adjustment portion 20 and the base portion 10 can be changed, thereby enabling the acetabular patch prosthesis to adapt to different bone defects. Therefore, the technical solution of this embodiment effectively solves the problem of poor versatility of the acetabular patch prosthesis in the related art.

[0038] The entire material of the acetabulum patch prosthesis in this embodiment is titanium alloy or cobalt-chromium-molybdenum.

[0039] The surface of the base portion 10 facing the adjustment portion 20 is a first plane, and the surface of the adjustment portion 20 facing the base portion 10 is a second plane. The first plane and the second plane can be arranged in contact with each other.

[0040] Specifically, in this embodiment, the base portion 10 includes a first porous structure layer and a first solid side, and the first porous structure layer is located on a side of the first solid side away from the adjustment portion 20 .

[0041] The adjustment portion 20 includes a second porous structure layer and a second solid side. The second porous structure layer is located on a side of the second solid side away from the base portion 10 .

[0042] In this embodiment, a solid structure is provided on the side wall of the adjustment portion 20, and the solid structure extends toward one side of the base portion 10. When the adjustment structure 30 adjusts the distance between the base portion 10 and the adjustment portion 20, the solid structure can block the gap between the adjustment portion 20 and the base portion 10, that is, the solid structure can abut and cooperate with the acetabulum cup.

[0043] Specifically, the surface of the solid structure facing the gap between the adjusting portion 20 and the base portion 10 is sandblasted.

[0044] It should be noted that the gap between the adjustment portion and the base portion can be filled with structures such as autologous bone or allogeneic bone, thereby better achieving biological fixation.

[0045] like Figures 1 to 3 as well as Figure 9 As shown, in this embodiment, the adjustment structure 30 includes an adjustment rod 31 and an adjustment hole 32. A limiting member 33 is provided on the adjustment rod 31, and the limiting member 33 can cooperate with the inner wall of the adjustment hole 32. One of the adjustment rod 31 and the adjustment hole 32 is provided on the base portion 10, and the other of the adjustment rod 31 and the adjustment hole 32 is provided on the adjustment portion 20.

[0046] The cooperation between the stopper 33 and the adjustment hole 32 further limits the range of movement of the adjustment rod 31, ensuring the stability and accuracy of the adjustment portion 20 during the adjustment process. This makes the adjustment process more controllable and avoids discomfort or complications caused by over-adjustment.

[0047] Specifically, the adjustment rod 31 includes a first rod body, a second rod body, and a third rod body. The adjustment hole 32 includes a first hole body, a second hole body, and a third hole body. The first rod body is arranged correspondingly to the first hole body, the second rod body is arranged correspondingly to the second hole body, and the third rod body is arranged correspondingly to the third hole body.

[0048] The first rod is located between the second rod and the third rod. The length of the first rod is greater than that of the second rod, and the length of the first rod is greater than that of the third rod.

[0049] The acetabular patch prosthesis is crescent-shaped as a whole, and the second rod body and the third rod body are respectively located at two tips of the crescent shape.

[0050] In this embodiment, the thickness of the middle portion of the acetabular patch prosthesis is greater than the thickness of the ends of the acetabular patch prosthesis. Specifically, the thickness of the acetabular patch prosthesis gradually decreases from the middle portion to the ends of the acetabular patch prosthesis, which can improve the stability after implantation and make it easier to implant.

[0051] In an embodiment not shown in the figure, the adjusting rod 31 is telescopically arranged, the first end of the adjusting rod 31 is connected to the base portion 10, and the second end of the adjusting rod 31 is connected to the adjusting portion 20. When the length of the adjusting rod 31 changes, the distance between the base portion 10 and the adjusting portion 20 can be adjusted.

[0052] like Figures 1 to 3 as well as Figure 7 and Figure 8 As shown, in this embodiment, the limit member 33 includes a swinging tooth 331, the swinging tooth 331 includes a main body section 3311 and a tooth section 3312, the main body section 3311 is hingedly connected to the adjusting rod 31, or the connection between the main body section 3311 and the tooth section 3312 is hingedly connected to the adjusting rod 31, and the direction of the rotation axis of the swinging tooth 331 is perpendicular to the axial direction of the adjusting rod 31.

[0053] The swinging tooth 331 can swing so that the swinging tooth 331 can abut against or avoid the inner wall of the adjustment hole 32, thereby making the adjustment process more flexible.

[0054] like Figures 1 to 3 as well as Figure 7 and Figure 8 As shown, in this embodiment, the swinging tooth 331 has a retracted position and an outward swing position. When the swinging tooth 331 is in the retracted position, the main body section 3311 is in contact with the adjusting rod 31. When the swinging tooth 331 is in the outward swing position, there is a gap between the main body section 3311 and the adjusting rod 31. The center of gravity of the swinging tooth 331 is located between the end of the main body section 3311 away from the tooth section 3312 and the rotation axis of the swinging tooth 331.

[0055] The above design utilizes the center of gravity of the swinging tooth 331 to ensure its stability in the outward swing position and prevent accidental retraction, thereby making the adjustment process safer and more reliable and avoiding possible unexpected situations during the operation.

[0056] Specifically, in an embodiment not shown in the figures, a magnetic structure is arranged between the swinging tooth 331 and the adjusting rod 31. The magnetic structure includes a magnetic part and a magnetic part. One of the magnetic part and the magnetic part is arranged on the main body section 3311, and the other of the magnetic part and the magnetic part is arranged on the adjusting rod 31. The magnetic part and the magnetic part can be magnetically matched, so that the swinging tooth 331 can be maintained in the recovery position.

[0057] The adjustment process of the acetabular patch prosthesis of this embodiment is as follows:

[0058] When the acetabular patch prosthesis is not implanted, the adjustment portion 20 and the base portion 10 are arranged in close contact with each other.

[0059] Then, according to actual needs, the distance between the base portion 10 and the adjustment portion 20 is adjusted through the adjustment structure 30. At this time, the tip of the limiting ring portion 321 can push the tooth segment 3312, thereby switching the swing tooth 331 from the recovery position to the outward swing position. At this time, the main body segment 3311 and the tooth segment 3312 can both avoid the limiting ring portion 321, thereby allowing the adjustment rod 31 to move in the adjustment hole 32.

[0060] When the tooth segment 3312 crosses a limiting ring portion 321, the swinging tooth 331 can switch from the outward swing position to the retracted position under the action of gravity or the magnetic structure, so that the tooth segment 3312 can be limited and matched with the limiting ring portions 321 located on its upper and lower sides.

[0061] After being adjusted to a reasonable position, the adjusting portion 20 is no longer pulled. At this time, the relative position between the adjusting portion 20 and the base portion 10 is fixed, and the adjustment is completed.

[0062] It should be noted that when the adjustment portion 20 in the acetabulum patch prosthesis of this embodiment is not subjected to a pulling force, the relative position between the adjustment portion 20 and the base portion 10 is fixed, that is, after implantation, there is no structure pulling the adjustment portion 20, so the adjustment portion 20 will not move, thereby making the relative position between the adjustment portion 20 and the base portion 10 relatively stable.

[0063] Of course, in order to make the swinging of the swinging tooth 331 easier, an avoidance recess is provided on the adjusting rod 31, and the avoidance recess is provided corresponding to the swinging tooth 331, so that the main body section 3311 can swing into the avoidance recess, thereby making the outward swing distance of the tooth section 3312 larger, thereby making the limiting effect better.

[0064] Specifically, the avoidance recess includes a first recess and a second recess, which are respectively located above and below the hinged joint between the swinging tooth 331 and the adjustment rod 31. The main body section 3311 corresponds to the first recess, and the tooth section 3312 corresponds to the second recess. As the distance from the tooth section 3312 to the main body section 3311 gradually decreases between the bottom surface of the first recess and the axis of the adjustment rod 31, the distance between the bottom surface of the second recess and the axis of the adjustment rod 31 gradually increases.

[0065] It should be noted that the above-mentioned avoidance recess is not shown in the figure.

[0066] like Figures 1 to 3 as well as Figure 7 and Figure 8As shown, in this embodiment, when the swinging tooth 331 is located at the retracted position, the distance between the tooth segment 3312 and the axis of the adjusting rod 31 gradually decreases in the direction from the tooth segment 3312 to the main body segment 3311 .

[0067] By changing the distance between the tooth segment 3312 and the axis of the adjusting rod 31, the adjusting portion 20 can be precisely adjusted, which can ensure a more accurate adjustment process.

[0068] like Figures 1 to 3 as well as Figure 5 and Figure 6 As shown, in this embodiment, a plurality of limiting annular portions 321 are provided in the adjustment hole 32 , and the plurality of limiting annular portions 321 are spaced apart along the axial direction of the adjustment hole 32 , and the tooth segment 3312 can be limitedly matched with one of the plurality of limiting annular portions 321 .

[0069] The limiting ring portion 321 can realize the limiting function, that is, the limiting ring portion 321 can cooperate with the swinging tooth 331 to ensure that the position of the adjustment part 20 is fixed during the adjustment process. Therefore, the adjustment process is more accurate and the position change after adjustment is avoided.

[0070] like Figures 1 to 3 as well as Figure 5 and Figure 6 As shown, in this embodiment, in the direction from the adjusting portion 20 to the base portion 10, the limiting annular portion 321 includes a first surface 3211 and a second surface 3212, the inner edge of the first surface 3211 and the inner edge of the second surface 3212 are connected, and the outer edge of the first surface 3211 and the outer edge of the second surface 3212 are both connected to the inner wall of the adjusting hole 32.

[0071] The design of the first surface 3211 and the second surface 3212 achieves a stable connection between the adjusting portion 20 and the base portion 10, thereby making the connection between the adjusting portion 20 and the base portion 10 more secure and avoiding the problem of looseness that may occur during surgery.

[0072] like Figures 1 to 3 as well as Figure 5 and Figure 6 As shown, in this embodiment, there is a first angle a between the busbar of the first surface 3211 and the axis of the adjustment hole 32, and a second angle b between the busbar of the second surface 3212 and the axis of the adjustment hole 32, wherein the first angle a and the second angle b satisfy: 0.4≤a / b≤0.75.

[0073] By controlling the ratio of the first angle a and the second angle b, the force distribution between the adjustment portion 20 and the base portion 10 is optimized, ensuring the stability of the acetabular patch prosthesis under load. This ensures that the acetabular patch prosthesis evenly distributes pressure when bearing the weight of the human body, reduces localized stress concentration, and prolongs the life of the prosthesis. Specifically, in this embodiment, a / b = 0.55.

[0074] In an embodiment not shown in the figure, a / b may also be 0.45, 0.5, 0.6, 0.65, 0.7 or other values.

[0075] Specifically, in this embodiment, the angle between the first surface 3211 and the second surface 3212 is between 30° and 40°.

[0076] Preferably, the angle between the first surface 3211 and the second surface 3212 is 35°. Of course, the angle can also be other angles.

[0077] like Figures 1 to 3 as well as Figure 5 and Figure 6 As shown, in this embodiment, multiple limiting ring portions 321 are arranged at equal intervals, and in the direction from the adjusting portion 20 to the base portion 10, there is a first distance c between the inner edge of the second surface 3212 of the first limiting ring portion 321 and the inner edge of the first surface 3211 of the second limiting ring portion 321 of any two adjacent limiting ring portions 321, and there is a second distance d between the outer edge of the second surface 3212 of the first limiting ring portion 321 and the outer edge of the first surface 3211 of the second limiting ring portion 321, wherein the first distance c and the second distance d satisfy: 1.2≤c / d≤1.6.

[0078] By controlling the ratio of the first distance c to the second distance d, a smooth transition of the adjustment portion 20 during the adjustment process is achieved, thereby avoiding a jamming phenomenon during the adjustment process. Specifically, in this embodiment, c / d=1.4.

[0079] In other embodiments, c / d may also be 1.25, 1.3, 1.35, 1.45, 1.5, 1.55 or other values.

[0080] like Figures 1 to 3 As shown, in this embodiment, the acetabular patch prosthesis also includes a guide structure 40, which includes a guide hole 41 and a guide rod 42. One of the guide hole 41 and the guide rod 42 is arranged on the base part 10, and the other of the guide hole 41 and the guide rod 42 is arranged on the adjustment part 20.

[0081] The guide holes 41 and the guide rods 42 guide the adjusting portion 20 so as to ensure linear motion during the adjustment process, thereby avoiding deviation during the adjustment process.

[0082] The guide rods 42 include a first guide rod, a second guide rod, and a third guide rod, and the guide holes 41 include a first guide hole, a second guide hole, and a third guide hole.

[0083] The first guide rod and the first rod body are correspondingly arranged, the second guide rod and the second rod body are correspondingly arranged, and the third guide rod and the third rod body are correspondingly arranged.

[0084] The length of the first guide rod is greater than that of the second guide rod, and the length of the first guide rod is greater than that of the third lane trunk.

[0085] Specifically, the first guide rod is located on the side of the first rod body away from the first load-bearing concave surface 11, the second guide rod is located on the side of the second rod body away from the first load-bearing concave surface 11, and the third guide rod is located on the side of the first rod body away from the first load-bearing concave surface 11.

[0086] like Figures 1 to 4 As shown, in this embodiment, a first connecting through hole 12 is provided on the base portion 10, and a second connecting through hole 22 is provided on the adjusting portion 20. The first connecting through hole 12 and the second connecting through hole 22 are provided correspondingly, and the first connecting through hole 12 and the adjusting structure 30 are provided at intervals.

[0087] The first connecting through-hole 12 and the second connecting through-hole 22 achieve a fixed connection between the acetabular patch prosthesis and the acetabulum bone, while maintaining independence from the adjustment structure 30, ensuring that the adjustment process is not affected. This allows the acetabular patch prosthesis to be firmly fixed to the acetabulum bone after implantation, while the adjustment structure 30 can function normally and achieve precise adjustment.

[0088] Specifically, the fastener can penetrate into the first connection through hole 12 and the second connection through hole 22 and connect with the bone structure at the acetabulum, so that fixation can be effectively achieved.

[0089] Specifically, in this embodiment, the axis of the first connecting through hole 12 , the axis of the adjusting rod 31 , and the axis of the guide rod 42 are arranged in parallel.

[0090] There are two first connecting through holes 12 and two second connecting through holes 22 . The two first connecting through holes 12 and the two second connecting through holes 22 are provided in a one-to-one correspondence. The two first connecting through holes 12 are respectively located on both sides of the first rod body.

[0091] The ratio of the distance between the axis of the first connecting through hole 12 and the axis of the first rod body to the distance between the axis of the first rod body and the axis of the second rod body is between 0.2 and 0.4.

[0092] It should be noted that, in this embodiment, the ratio of the distance between the axis of the first connecting through hole 12 and the axis of the first rod to the distance between the axis of the first rod and the axis of the second rod is 0.3.

[0093] The above arrangement can not only ensure the stability of implantation, but also prevent the acetabular patch prosthesis from being damaged by fasteners.

[0094] Specifically, the acetabular patch prosthesis is formed in one piece by 3D printing.

[0095] In the description of the present invention, it should be understood that "plurality" refers to a quantity of two or more than two. 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 accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise stated, these directional words do not indicate or imply that the devices or components 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 outline of each component itself.

[0096] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. 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 figures. For example, if the device in the 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.

[0097] 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. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0098] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. An acetabular patch prosthesis, characterized in that: include: A base portion (10), wherein a first load-bearing concave surface (11) is provided on a side wall of the base portion (10); An adjusting portion (20) is adjustably arranged on the end wall of the base portion (10), and a second load-bearing concave surface (21) corresponding to the first load-bearing concave surface (11) is arranged on a side wall of the adjusting portion (20); An adjusting structure (30) is provided between the base portion (10) and the adjusting portion (20) to adjust the distance between the base portion (10) and the adjusting portion (20).

2. The acetabular patch prosthesis according to claim 1, characterized in that: The adjustment structure (30) comprises an adjustment rod (31) and an adjustment hole (32); a limiting member (33) is provided on the adjustment rod (31); the limiting member (33) can be limitedly matched with the inner wall of the adjustment hole (32); one of the adjustment rod (31) and the adjustment hole (32) is provided on the base portion (10), and the other of the adjustment rod (31) and the adjustment hole (32) is provided on the adjustment portion (20).

3. The acetabular patch prosthesis according to claim 2, characterized in that: The limiting member (33) includes a swinging tooth (331), and the swinging tooth (331) includes a main body section (3311) and a tooth section (3312). The main body section (3311) is hingedly connected to the adjusting rod (31), or the connection between the main body section (3311) and the tooth section (3312) is hingedly connected to the adjusting rod (31). The direction of the rotation axis of the swinging tooth (331) is perpendicular to the axial direction of the adjusting rod (31).

4. The acetabular patch prosthesis according to claim 3, characterized in that: The swinging tooth (331) has a retracted position and an outward swing position. When the swinging tooth (331) is in the retracted position, the main body section (3311) contacts the adjusting rod (31). When the swinging tooth (331) is in the outward swing position, there is a gap between the main body section (3311) and the adjusting rod (31). The center of gravity of the swinging tooth (331) is located between the end of the main body section (3311) away from the tooth section (3312) and the rotation axis of the swinging tooth (331).

5. The acetabular patch prosthesis according to claim 4, characterized in that: When the swinging tooth (331) is located at the recovery position, the distance between the tooth segment (3312) and the axis of the adjusting rod (31) gradually decreases in the direction from the tooth segment (3312) to the main body segment (3311).

6. The acetabular patch prosthesis according to claim 3, characterized in that: A plurality of limiting annular portions (321) are provided in the adjusting hole (32), and the plurality of limiting annular portions (321) are spaced apart along the axial direction of the adjusting hole (32), and the tooth segment (3312) can be limitedly matched with one of the plurality of limiting annular portions (321).

7. The acetabular patch prosthesis according to claim 6, characterized in that: In the direction from the adjusting portion (20) to the base portion (10), the limiting annular portion (321) includes a first surface (3211) and a second surface (3212), the inner edge of the first surface (3211) and the inner edge of the second surface (3212) are connected, and the outer edge of the first surface (3211) and the outer edge of the second surface (3212) are both connected to the inner wall of the adjusting hole (32).

8. The acetabular patch prosthesis according to claim 7, characterized in that: There is a first angle a between the generatrix of the first surface (3211) and the axis of the adjustment hole (32), and there is a second angle b between the generatrix of the second surface (3212) and the axis of the adjustment hole (32), wherein the first angle a and the second angle b satisfy: 0.4≤a / b≤0.

75.

9. The acetabular patch prosthesis according to claim 7, characterized in that: The plurality of limiting annular portions (321) are arranged at equal intervals, and in the direction from the adjusting portion (20) to the base portion (10), there is a first distance c between the inner edge of the second surface (3212) of the first limiting annular portion (321) of any two adjacent limiting annular portions (321) and the inner edge of the first surface (3211) of the second limiting annular portion (321), and there is a second distance d between the outer edge of the second surface (3212) of the first limiting annular portion (321) and the outer edge of the first surface (3211) of the second limiting annular portion (321), wherein the first distance c and the second distance d satisfy the following: 1.2≤c / d≤1.

6.

10. The acetabular patch prosthesis according to any one of claims 1 to 9, characterized in that: The acetabulum patch prosthesis also includes a guide structure (40), which includes a guide hole (41) and a guide rod (42), one of the guide hole (41) and the guide rod (42) is arranged on the base part (10), and the other of the guide hole (41) and the guide rod (42) is arranged on the adjustment part (20).

11. The acetabular patch prosthesis according to any one of claims 1 to 9, characterized in that: The base portion (10) is provided with a first connecting through hole (12), and the adjusting portion (20) is provided with a second connecting through hole (22). The first connecting through hole (12) and the second connecting through hole (22) are correspondingly arranged, and the first connecting through hole (12) and the adjusting structure (30) are spaced apart.

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