Acetabular cup structure

Abstract

The invention provides an acetabular cup structure which comprises an outer cup provided with a mounting cavity and connected with a pelvis; the inner cup is movably arranged in the mounting cavity, and the inner cup is provided with a containing cavity for containing the femoral head; the connecting assembly comprises a first positioning piece and a second positioning piece, the first positioning piece is arranged on the inner side of the outer cup, the second positioning piece is arranged on the outer side of the inner cup, and when the first positioning piece is in positioning fit with the second positioning piece, the position of the inner cup is kept unchanged relative to the outer cup. According to the technical scheme, the problem that an acetabular cup is difficult to install in the prior art can be effectively solved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to an acetabular cup structure. Background Art

[0002] Generally, in this field, when patients encounter a large range of hip joint defects, most doctors will choose to make a special-shaped one-piece acetabular cup or a split patch to fill the bone defect. Although this type of prosthesis solves the patient's problem to a certain extent. The above scheme will cause some problems. For example, when placing a special-shaped one-piece acetabular cup with connecting wings, due to the certain difference between the bone reconstructed by CT and the actual bone, after the rotation center is confirmed, the connecting wings may not be well attached to the bone, resulting in the entire acetabular cup not being placed in the best position; if the connecting wings are adjusted again, the rotation center may shift again. This will cause great inconvenience to the patient. Summary of the Invention

[0003] The main purpose of the present invention is to provide an acetabular cup structure to solve the problem of difficult installation of the acetabular cup in the related art.

[0004] In order to achieve the above-mentioned objectives, the present invention provides an acetabulum cup structure, comprising: an outer cup, having a mounting cavity and connected to the pelvis; an inner cup, movably disposed in the mounting cavity, the inner cup having a receiving cavity for accommodating the femoral head; a connecting assembly, comprising a first positioning member and a second positioning member, the first positioning member being disposed on the inner side of the outer cup, and the second positioning member being disposed on the outer side of the inner cup, and when the first positioning member is positioned and matched with the second positioning member, the inner cup maintains its position relative to the outer cup.

[0005] Furthermore, the connecting assembly also includes a connecting structure, which is arranged between the outer cup and the inner cup, and the inner cup is rotatably arranged in the installation cavity through the connecting structure.

[0006] Furthermore, one of the first positioning member and the second positioning member includes a positioning column, and the other of the first positioning member and the second positioning member includes a positioning hole, and the positioning column is plugged into the positioning hole so that the inner cup maintains its position relative to the outer cup; and / or, the first positioning member includes a positioning hole, the positioning hole is a blind hole structure, and the second positioning member includes a positioning column, the length of the positioning column is greater than the depth of the positioning hole so that the outer side of the inner cup and the inner side of the outer cup are spaced apart.

[0007] Furthermore, the first positioning member includes a positioning hole, and the second positioning member includes a positioning column. There are multiple positioning holes, and the multiple positioning holes are arranged at intervals. The positioning column can be plugged into and matched with one of the multiple positioning holes.

[0008] Furthermore, the plurality of positioning holes are spaced apart along a preset direction, and the preset direction is arranged at an angle to both the coronal plane and the sagittal plane of the human body.

[0009] Furthermore, the inner cup is a hemispherical structure, and the multiple positioning holes include a first positioning hole and a second positioning hole located at the outermost edge, wherein, when the positioning post is plugged into the first positioning hole, the angle between the axis of the inner cup and the coronal plane of the human body is 20°, and when the positioning post is plugged into the second positioning hole, the angle between the axis of the inner cup and the coronal plane of the human body is 10°; and / or, when the positioning post is plugged into the first positioning hole, the angle between the axis of the inner cup and the sagittal plane of the human body is 40°, and when the positioning post is plugged into the second positioning hole, the angle between the axis of the inner cup and the sagittal plane of the human body is 50°.

[0010] Furthermore, the connecting structure includes a support shaft and a socket, the support shaft is connected to the outer side of the inner cup, the socket is arranged on the inner side of the outer cup, the support shaft is rotatably inserted into the socket, and the length of the socket is greater than or equal to the diameter of the support shaft; and / or, the acetabular cup structure also includes a first connecting wing and a second connecting wing connected to the outer cup, the first connecting wing is used to connect to the pubic bone, and the second connecting wing is used to connect to the ischium.

[0011] Furthermore, the acetabular cup structure also includes a third connecting wing detachably provided with the outer cup, and the third connecting wing is used to be connected to the ilium.

[0012] Furthermore, one of the third connecting wing and the outer cup is provided with a slide groove, and the other of the third connecting wing and the outer cup is provided with a guide rail, which can slide into the slide groove and slidably cooperate with the slide groove.

[0013] Furthermore, the end of the slide groove has an entrance, and the side of the slide groove has an opening, and the guide rail enters the slide groove through the entrance. In the direction from the bottom wall of the slide groove to the opening, the distance between the side walls of the slide groove gradually decreases, and the shape of the outer surface of the guide rail is adapted to the shape of the inner surface of the slide groove to limit the guide rail from leaving the slide groove through the opening; and / or, a slide groove is provided on the third connecting wing, and a guide rail is provided on the outer cup, and the length of the guide rail is greater than the length of the slide groove.

[0014] According to the technical solution of the present invention, the outer cup has a mounting cavity and is connected to the pelvis. The outer cup can provide a mounting base and fill the bone defect of the pelvis. The inner cup is movably arranged in the mounting cavity. The inner cup has a receiving cavity for accommodating the femoral head. The femoral head can rotate in the receiving cavity to achieve the basic function of changing the angle between the human femur and pelvis. The inner cup is movably arranged so that the doctor can adjust the position of the inner cup relative to the outer cup and then adjust the axis of the inner cup so that the rotation center of the inner cup can match the patient's femur; the connecting assembly includes a first positioning member and a second positioning member, the first positioning member is arranged on the inner side of the outer cup, and the second positioning member is arranged on the outer side of the inner cup. When the doctor uses the acetabular cup structure, first, the position of the outer cup relative to the pelvis is adjusted so that the outer cup is in a better position. Then, after determining the position of the outer cup, the position of the inner cup relative to the outer cup is adjusted so that the rotation center of the inner cup can match the patient's femur. Then, the first positioning member and the second positioning member are positioned and matched so that the inner cup remains in the same position relative to the outer cup. Through the above arrangement, it is convenient for the doctor to install the acetabular cup structure and improve the patient experience. Therefore, the technical solution of the present application can effectively solve the problem of difficult installation of the acetabular cup in the related art. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 It shows a schematic perspective structural diagram of a first embodiment of an acetabular cup structure according to the present invention;

[0017] Figure 2 Shown Figure 1 A schematic diagram of the three-dimensional structure of the acetabular cup structure from another angle;

[0018] Figure 3 Shown Figure 1 A schematic diagram of the three-dimensional structure of the acetabular cup structure from another angle;

[0019] Figure 4 Shown Figure 1 A schematic diagram of the three-dimensional structure of the outer cup of the acetabular cup structure;

[0020] Figure 5 Shown Figure 4 A schematic diagram of the three-dimensional structure of the outer cup from another angle;

[0021] Figure 6 Shown Figure 1 A schematic diagram of the three-dimensional structure of the third connecting wing of the acetabular cup structure;

[0022] Figure 7A perspective structural schematic view of a second embodiment of the acetabular cup structure according to the present application is shown.

[0023] Wherein, the above figures include the following reference signs:

[0024] 10, outer cup; 11, mounting cavity; 12, guide rail;

[0025] 20, inner cup; 21, containing cavity;

[0026] 30, connecting assembly; 31, first positioning member; 311, positioning hole; 312, first positioning hole; 313, second positioning hole; 32, second positioning member; 321, positioning column; 33, connecting structure; 331, support pivot; 332, insertion hole;

[0027] 40, first connecting wing;

[0028] 50, second connecting wing;

[0029] 60, third connecting wing; 61, sliding groove; 611, opening;

[0030] 71, bone grafting groove. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. The description of the at least one exemplary embodiment is actually only illustrative, but not intended to limit the present application and its application or use in any way. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without any creative work under the premise, belong to the scope of protection of the present application.

[0032] It should be noted that the terms used herein are only intended to describe specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form, unless the context clearly indicates otherwise, and furthermore, it should be understood that when the terms "comprise" and / or "include" are used in the specification, there is a feature, step, operation, device, component and / or combination thereof.

[0033] The foregoing merely illustrates the principles of the application. Various modifications and alterations to the methods and devices described in connection with this application can be discerned by those skilled in the art and are the intended scope of this teaching. It should be appreciated that variations to the disclosed embodiment can be made and that it is therefore contemplated that the application can be practiced otherwise than as specifically described. For example, the steps can be performed in a variety of orders as can be desired or advantageous in any particular situation or in any other order that is appropriate. The application can also be implemented or carried out in a composition of matter differing from those described specifically herein. All such modifications can be derived in the application without departing from the scope and spirit of the application. It is the following claims, including all equivalents, that are intended to define the scope of this application.

[0034] As shown in Figures 1 to 5 The present application provides a structure of acetabular cup, the first embodiment of the acetabular cup structure of the present application comprises: an outer cup 10, an inner cup 20, a connecting assembly 30; the outer cup 10 has a mounting cavity 11 and is connected with the pelvis; the inner cup 20 is movably arranged in the mounting cavity 11, and the inner cup 20 has a receiving cavity 21 for accommodating a femoral head; the connecting assembly 30 comprises a first positioning member 31 and a second positioning member 32, the first positioning member 31 is arranged on the inner side of the outer cup 10, and the second positioning member 32 is arranged on the outer side of the inner cup 20; when the first positioning member 31 and the second positioning member 32 are positioned and matched, the inner cup 20 remains unchanged relative to the outer cup 10.

[0035] Applying the technical solution of this embodiment, the outer cup 10 has a mounting cavity 11 and is connected to the pelvis. The outer cup 10 can provide a mounting base and fill the bone defect of the pelvis. The inner cup 20 is movably arranged in the mounting cavity 11. The inner cup 20 has a receiving cavity 21 for accommodating the femoral head. The femoral head can rotate in the receiving cavity 21 to achieve the basic function of changing the angle between the human femur and pelvis. The inner cup 20 is movably arranged so that the doctor can adjust the position of the inner cup 20 relative to the outer cup 10 and then adjust the axis of the inner cup 20 so that the rotation center of the inner cup 20 can match the patient's femur; the connecting assembly 30 includes a first positioning member 31 and a second positioning member 32 The first positioning member 31 is disposed on the inner side of the outer cup 10, and the second positioning member 32 is disposed on the outer side of the inner cup 20. When the doctor uses the acetabular cup structure, he first adjusts the position of the outer cup 10 relative to the pelvis so that the outer cup 10 is in a preferred position. Then, after determining the position of the outer cup 10, he adjusts the position of the inner cup 20 relative to the outer cup 10 so that the rotation center of the inner cup 20 can match the patient's femur. The first positioning member 31 and the second positioning member 32 are then positioned and matched so that the inner cup 20 maintains its position relative to the outer cup 10. The above arrangement facilitates the doctor's installation of the acetabular cup structure and improves the patient's experience. Therefore, the technical solution of this embodiment can effectively solve the problem of difficult acetabular cup installation in the related art.

[0036] Furthermore, in the art, when the pelvic bone defect is large, once the center of rotation of the femoral head is determined, using a single-piece patch can increase the overall weight of the prosthesis, leading to a center offset (i.e., an offset in the axis of the cavity housing the femoral head, similar to the acetabulum), making it difficult to align the center of the prosthesis with the center of rotation of the femoral head. If a separate patch is designed, bone cement is required to connect the separate components of the patch, making it difficult to ensure the long-term stability of the prosthesis. With the acetabular cup structure of this embodiment, the doctor can adaptively adjust the axis of the inner cup 20, allowing the acetabular cup structure to flexibly match the femoral head. Alternatively, the doctor can use a connecting assembly 30 to connect the outer cup 10 and inner cup 20, ensuring a long-term stable connection between the various components of the acetabular cup structure. In this embodiment, the design of the outer cup 10 is based on the bone shape of the patient's pelvis, restoring the structural continuity of the affected side of the pelvis. This also allows the outer cup 10 to avoid the soft tissue in the pelvis to the greatest extent possible, reducing damage to the soft tissue caused by the acetabular cup structure.

[0037] like Figures 1 to 5As shown, the connection assembly 30 further includes a connection structure 33, which is disposed between the outer cup 10 and the inner cup 20. The inner cup 20 is rotatably disposed in the mounting cavity 11 via the connection structure 33. Specifically, in this embodiment, "the inner cup 20 is movably disposed in the mounting cavity 11" means that the inner cup 20 is rotatably disposed in the mounting cavity 11, is connected to the outer cup 10 via the connection structure 33, and is rotatable relative to the outer cup 10, thereby enabling the doctor to adjust the axis of the inner cup 20.

[0038] like Figures 1 to 5 As shown, the connection structure 33 includes a support shaft 331 and a socket 332. The support shaft 331 is connected to the outside of the inner cup 20, and the socket 332 is provided on the inside of the outer cup 10. The support shaft 331 is rotatably inserted into the socket 332. The length of the socket 332 is greater than or equal to the diameter of the support shaft 331. Specifically, there are two support shafts 331 and two sockets 332 to improve the connection stability between the inner cup 20 and the outer cup 10. The support shaft 331 and the socket 332 are provided in a one-to-one correspondence. The support shaft 331 rotates in the socket 332, thereby realizing the rotation of the inner cup 20. The length of the socket 332 is greater than the diameter of the support shaft 331. This prevents the support shaft 331 from getting stuck in the socket 332 when the inner cup 20 rotates, thereby ensuring smooth rotation of the inner cup 20.

[0039] In addition, one of the first positioning member 31 and the second positioning member 32 includes a positioning post 321, and the other of the first positioning member 31 and the second positioning member 32 includes a positioning hole 311. The positioning post 321 is plugged into and matched with the positioning hole 311 to keep the inner cup 20 in a constant position relative to the outer cup 10. Specifically, Figures 1 to 5 As shown, in this embodiment, the second positioning member 32 includes a positioning column 321, and the first positioning member 31 includes a positioning hole 311. The positioning column 321 and the positioning hole 311 are plugged into and matched with each other, so that the inner cup 20 is limited. The positioning column 321 and the positioning hole 311 have the advantages of simple structure and easy processing.

[0040] like Figures 1 to 5 As shown, the first positioning member 31 includes a positioning hole 311, and the second positioning member 32 includes a positioning post 321. There are multiple positioning holes 311, spaced apart from each other, and the positioning post 321 can be inserted and engaged with one of the multiple positioning holes 311. Specifically, by providing multiple positioning holes 311, the positioning post 321 can be inserted and engaged with the corresponding positioning hole 311 when the inner cup 20 is in different positions, thereby limiting the position of the inner cup 20. After the doctor adjusts the position of the inner cup 20, the positioning post 321 inserts and engages with the corresponding positioning hole 311, thereby maintaining the current position of the inner cup 20.

[0041] like Figures 1 to 5As shown, the plurality of positioning holes 311 are spaced apart along a preset direction, and the preset direction is set at an angle to both the human coronal plane and the human sagittal plane. Specifically, when the acetabular cup structure is mounted on the patient's pelvis, the plurality of positioning holes 311 are spaced apart along the preset direction, and the preset direction is set at an angle to the human coronal plane. This allows the positioning post 321 to engage with different positioning holes 311, thereby changing the angle between the axis of the inner cup 20 and the human coronal plane, thereby adjusting the anteversion angle of the inner cup 20. The preset direction is set at an angle to the human sagittal plane, thereby changing the angle between the axis of the inner cup 20 and the human sagittal plane, thereby adjusting the abduction angle of the inner cup 20.

[0042] The coronal plane, sagittal plane and transverse plane of the human body together constitute the three main sections in anatomy, which divide the human body from different directions to facilitate the observation and study of the body structure.

[0043] The coronal plane, also known as the frontal plane, is a fundamental concept in human anatomy. It refers to the section that divides the human body into anterior and posterior parts along the left-right direction. The coronal plane extends along the left-right direction of the body, dividing it into the anterior (abdomen) and posterior (back). This section is perpendicular to the ground and is perpendicular to the sagittal and transverse planes when the body is in a standard anatomical posture (i.e., upright, facing forward, arms hanging naturally, palms facing forward).

[0044] The sagittal plane is a fundamental concept in human anatomy. It refers to the section that divides the human body into left and right parts along the front-to-back direction. The sagittal plane runs along the front-to-back direction, dividing the body into left and right sides. When the body is in the standard anatomical posture (i.e., upright, facing forward, arms hanging naturally, palms facing forward), the sagittal plane is perpendicular to the coronal and transverse planes.

[0045] like Figures 1 to 5 As shown, the inner cup 20 is a hemispherical structure, and the multiple positioning holes 311 include a first positioning hole 312 and a second positioning hole 313 located at the outermost edge. When the positioning column 321 is plugged into the first positioning hole 312, the angle between the axis of the inner cup 20 and the coronal plane of the human body is 20°. When the positioning column 321 is plugged into the second positioning hole 313, the angle between the axis of the inner cup 20 and the coronal plane of the human body is 10°.

[0046] That is to say, the other positioning holes 311 are all between the first positioning hole 312 and the second positioning hole 313, so that the forward tilt angle of the inner cup 20 is greater than or equal to 10° and less than or equal to 20°. More specifically, the forward tilt angle of the inner cup 20 can be 10°, 12°, 14°, 16°, 17°, 19° or 20°.

[0047] When the positioning column 321 is plugged into the first positioning hole 312, the angle between the axis of the inner cup 20 and the sagittal plane of the human body is 40°. When the positioning column 321 is plugged into the second positioning hole 313, the angle between the axis of the inner cup 20 and the sagittal plane of the human body is 50°.

[0048] That is to say, the other positioning holes 311 are all between the first positioning hole 312 and the second positioning hole 313, so that the abduction angle of the inner cup 20 is greater than or equal to 40° and less than or equal to 50°. More specifically, the abduction angle of the inner cup 20 can be 40°, 44°, 45°, 46°, 47°, 49° or 50°.

[0049] like Figures 1 to 5 As shown, the first positioning member 31 includes a positioning hole 311, which is a blind hole structure. The second positioning member 32 includes a positioning post 321. The length of the positioning post 321 is greater than the depth of the positioning hole 311, so that the outer side of the inner cup 20 is spaced apart from the inner side of the outer cup 10. Specifically, the spacing between the outer side of the inner cup 20 and the inner side of the outer cup 10 can form a filling space between the outer side of the inner cup 20 and the inner side of the outer cup 10. Bone cement can be filled in this filling space to enhance the connection strength between the inner cup 20 and the outer cup 10.

[0050] like Figures 1 to 5 As shown, the acetabular cup structure further includes a first connecting wing 40 and a second connecting wing 50 connected to the outer cup 10 . The first connecting wing 40 is used to connect to the pubic bone, and the second connecting wing 50 is used to connect to the ischium.

[0051] Specifically, the first and second connecting wings 40, 50 enhance the connection strength between the acetabular cup structure and the human body. The first and second connecting wings 40, 50 are provided with screw holes for inserting non-locking screws, allowing the surgeon to fine-tune the screw orientation based on the actual intraoperative situation, enhancing operability. Furthermore, the outer sides of the outer cup 10, the first and second connecting wings 40, 50 are provided with trabecular bone structures. These trabecular bone structures facilitate bone ingrowth into the acetabular cup structure during the mid- to late-stage, ensuring the stability of the acetabular cup structure during the mid- to late-stage.

[0052] like Figures 1 to 6As shown, the acetabular cup structure further includes a third connecting wing 60 detachably provided with the outer cup 10, and the third connecting wing 60 is used to connect to the ilium. Specifically, the third connecting wing 60 can also enhance the connection strength of the acetabular cup structure, and the third connecting wing 60 is also provided with a screw hole that cooperates with a non-locking screw.

[0053] like Figures 1 to 6 As shown, one of the third connecting wing 60 and the outer cup 10 is provided with a slide groove 61, and the other of the third connecting wing 60 and the outer cup 10 is provided with a guide rail 12. The guide rail 12 can slide into the slide groove 61 and slidably cooperate with the slide groove 61. Specifically, when a doctor uses the acetabular cup structure, he or she can first adjust the position of the third connecting wing 60 and connect it to the ilium. This avoids the possibility of interference with other structures of the human body caused by the integrally formed structure (the third connecting wing and the outer cup are integrally formed), which makes it inconvenient for the doctor to operate. After the third connecting wing 60 is connected, the guide rail 12 is used to cooperate with the slide groove 61 to connect the third connecting wing 60 and the outer cup 10.

[0054] like Figures 1 to 6 As shown, the end of the slide groove 61 has an entrance, and the side of the slide groove 61 has an opening 611. The guide rail 12 enters the slide groove 61 through the entrance. In the direction from the bottom wall of the slide groove 61 to the opening 611, the distance between the side walls of the slide groove 61 gradually decreases. The shape of the outer surface of the guide rail 12 is adapted to the shape of the inner surface of the slide groove 61 to limit the guide rail 12 from leaving the slide groove 61 through the opening 611.

[0055] Specifically, in the direction from the bottom wall of the slide groove 61 to the opening 611, the distance between the side walls of the slide groove 61 gradually decreases, so that the slide groove 61 forms a necking groove structure, and the shape of the outer surface of the guide rail 12 is adapted to the shape of the inner surface of the slide groove 61, so that the guide rail 12 forms a wedge-shaped structure. After the guide rail 12 slides into the slide groove 61 through the entrance, it will not slide out of the slide groove 61 from the opening 611.

[0056] like Figures 1 to 6 As shown, the third connecting wing 60 is provided with a slide groove 61, and the outer cup 10 is provided with a guide rail 12. The guide rail 12 is longer than the slide groove 61. Specifically, "the guide rail 12 is longer than the slide groove 61" means that the guide rail 12 is longer in the direction in which the slide groove 61 extends. This arrangement ensures that even if the third connecting wing 60 moves slightly in the direction in which the slide groove 61 extends, the third connecting wing 60 and the outer cup 10 will not separate. In addition, the third connecting wing 60 is provided with multiple bone grafting grooves 71.

[0057] like Figure 7As shown, the present application also provides a second embodiment of the acetabular cup structure. The difference between the second embodiment of the acetabular cup structure and the first embodiment is that: there are multiple guide rails 12 and multiple slide grooves 61, and the multiple guide rails 12 and the multiple slide grooves 61 are arranged in a one-to-one correspondence. The multi-guide rail structure has the advantage of more precise and stable sliding.

[0058] In the description of the present invention, it is to 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 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 outline of each component itself.

[0059] For ease of description, spatially relative terms such as "above," "on the upper surface of," "on top of," 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 encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, a device described as "above" or "on top of" other devices or structures would then be positioned as "below" or "below" the other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used herein should be interpreted accordingly.

[0060] 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.

[0061] 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 cup structure, characterized in that: include: An outer cup (10) having a mounting cavity (11) and connected to the pelvis; An inner cup (20) is movably disposed in the mounting cavity (11), the inner cup (20) having an accommodating cavity (21) for accommodating a femoral head; The connecting assembly (30) comprises a first positioning member (31) and a second positioning member (32), wherein the first positioning member (31) is arranged on the inner side of the outer cup (10), and the second positioning member (32) is arranged on the outer side of the inner cup (20), and when the first positioning member (31) and the second positioning member (32) are positioned and matched, the inner cup (20) maintains a constant position relative to the outer cup (10).

2. The acetabular cup structure according to claim 1, wherein: The connecting assembly (30) further comprises a connecting structure (33), wherein the connecting structure (33) is arranged between the outer cup (10) and the inner cup (20), and the inner cup (20) is rotatably arranged in the mounting cavity (11) via the connecting structure (33).

3. The acetabular cup structure according to claim 1, wherein: One of the first positioning member (31) and the second positioning member (32) includes a positioning post (321), the other of the first positioning member (31) and the second positioning member (32) includes a positioning hole (311), the positioning post (321) being plugged into and fitted with the positioning hole (311) so that the inner cup (20) maintains a constant position relative to the outer cup (10); and / or, The first positioning member (31) includes a positioning hole (311) having a blind hole structure. The second positioning member (32) includes a positioning column (321) having a length greater than a depth of the positioning hole (311) so that the outer side of the inner cup (20) and the inner side of the outer cup (10) are spaced apart.

4. The acetabular cup structure according to claim 1, wherein: The first positioning member (31) includes a positioning hole (311), and the second positioning member (32) includes a positioning column (321). There are multiple positioning holes (311), and the multiple positioning holes (311) are arranged at intervals. The positioning column (321) can be plugged into and matched with one of the multiple positioning holes (311).

5. The acetabular cup structure according to claim 4, characterized in that: The plurality of positioning holes (311) are arranged at intervals along a preset direction, and the preset direction is arranged at an angle to both the coronal plane of the human body and the sagittal plane of the human body.

6. The acetabular cup structure according to claim 5, characterized in that: The inner cup (20) is a hemispherical structure, and the plurality of positioning holes (311) include a first positioning hole (312) and a second positioning hole (313) located at the outermost edge, wherein: When the positioning post (321) is plugged into the first positioning hole (312), the angle between the axis of the inner cup (20) and the coronal plane of the human body is 20°; when the positioning post (321) is plugged into the second positioning hole (313), the angle between the axis of the inner cup (20) and the coronal plane of the human body is 10°; and / or, When the positioning post (321) is plugged into the first positioning hole (312), the angle between the axis of the inner cup (20) and the sagittal plane of the human body is 40°; when the positioning post (321) is plugged into the second positioning hole (313), the angle between the axis of the inner cup (20) and the sagittal plane of the human body is 50°.

7. The acetabular cup structure according to claim 2, wherein: The connecting structure (33) includes a supporting shaft (331) and a socket (332), wherein the supporting shaft (331) is connected to the outer side of the inner cup (20), and the socket (332) is provided on the inner side of the outer cup (10), and the supporting shaft (331) is rotatably inserted into the socket (332), and the length of the socket (332) is greater than or equal to the diameter of the supporting shaft (331); and / or, The acetabular cup structure further comprises a first connecting wing (40) and a second connecting wing (50) connected to the outer cup (10), wherein the first connecting wing (40) is used to connect to the pubic bone, and the second connecting wing (50) is used to connect to the ischium.

8. The acetabular cup structure according to any one of claims 1 to 7, characterized in that: The acetabular cup structure further comprises a third connecting wing (60) detachably arranged with the outer cup (10), and the third connecting wing (60) is used to be connected to the ilium.

9. The acetabular cup structure according to claim 8, characterized in that: One of the third connecting wing (60) and the outer cup (10) is provided with a slide groove (61), and the other of the third connecting wing (60) and the outer cup (10) is provided with a guide rail (12), and the guide rail (12) can slide into the slide groove (61) and slidably cooperate with the slide groove (61).

10. The acetabular cup structure according to claim 9, characterized in that: The end of the chute (61) has an entrance, and the side of the chute (61) has an opening (611), the guide rail (12) enters the chute (61) through the entrance, and the distance between the side walls of the chute (61) gradually decreases in the direction from the bottom wall of the chute (61) to the opening (611), and the shape of the outer surface of the guide rail (12) is adapted to the shape of the inner surface of the chute (61) to limit the guide rail (12) from leaving the chute (61) through the opening (611); and / or, The third connecting wing (60) is provided with the slide groove (61), and the outer cup (10) is provided with the guide rail (12), and the length of the guide rail (12) is greater than the length of the slide groove (61).

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