Hip joint prosthesis system

Abstract

The application provides a hip joint prosthesis system, which comprises: a acetabular cup; an inner liner installed in the acetabular cup; a ball head installed in the inner liner; a femoral component connected with the ball head; wherein the outer surface of the acetabular cup has a plurality of regions, and the elastic modulus of the plurality of regions is different. The technical scheme of the application effectively solves the problem that the hip joint prosthesis in the related art causes stress shielding, thereby affecting long-term use.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a hip joint prosthesis system. BACKGROUND

[0002] Total hip arthroplasty (THA) is one of the greatest surgical procedures in the last 50 years, which can effectively eliminate the pain of patients, correct the deformity of the hip joint, and restore the activity function of patients.

[0003] In the related art, the acetabular cup commonly used in clinical application is made of titanium alloy or cobalt alloy, and the elastic modulus is much larger than that of human bone (the elastic modulus of human bone is 5-30 GPa, the elastic modulus of titanium alloy (TC4) is 110 GPa, and the elastic modulus of cobalt alloy (CoCrMo) is 230 GPa), which will cause stress shielding and is not conducive to the long-term clinical effect of the prosthesis. SUMMARY

[0004] The main purpose of the present application is to provide a hip joint prosthesis system to solve the problem that the hip joint prosthesis in the related art causes stress shielding and affects long-term use.

[0005] In order to achieve the above-mentioned purpose, the present application provides a hip joint prosthesis system, comprising: an acetabular cup; an inner liner installed in the acetabular cup; a ball head installed in the inner liner; a femoral component connected with the ball head; wherein the outer surface of the acetabular cup has a plurality of regions, and the elastic modulus of the plurality of regions is different.

[0006] Further, the plurality of regions includes a plurality of top arc-shaped regions and a plurality of bottom arc-shaped regions located below the plurality of top arc-shaped regions, and the elastic modulus of the top arc-shaped regions and the elastic modulus of the bottom arc-shaped regions arranged adjacent to each other are different.

[0007] Further, the plurality of top arc-shaped regions includes a first top arc-shaped region, a second top arc-shaped region, a third top arc-shaped region and a fourth top arc-shaped region, the plurality of bottom arc-shaped regions includes a first bottom arc-shaped region adjacent to the first top arc-shaped region, a second bottom arc-shaped region adjacent to the second top arc-shaped region, a third bottom arc-shaped region adjacent to the third top arc-shaped region and a fourth bottom arc-shaped region adjacent to the fourth top arc-shaped region, the elastic modulus of the first top arc-shaped region is less than the elastic modulus of the first bottom arc-shaped region, the elastic modulus of the second top arc-shaped region is greater than the elastic modulus of the second bottom arc-shaped region, the elastic modulus of the third top arc-shaped region is greater than the elastic modulus of the third bottom arc-shaped region, and the elastic modulus of the fourth top arc-shaped region is greater than the elastic modulus of the fourth bottom arc-shaped region.

[0008] Further, the plurality of regions further comprises a plurality of top transition regions and a plurality of bottom transition regions, each top transition region is located between two adjacent top arc regions, and each bottom transition region is located between two adjacent bottom arc regions.

[0009] Further, the first top arc region, the second top arc region, the third top arc region and the fourth top arc region have equal areas, and the first bottom arc region, the second bottom arc region, the third bottom arc region and the fourth bottom arc region have equal areas.

[0010] Further, the first top arc region has an elastic modulus of 40-80 GPa and a porosity of 50-80%, the first bottom arc region has an elastic modulus of 60-100 GPa and a porosity of 20-50%, the second top arc region has an elastic modulus of 40-80 GPa and a porosity of 50-80%, the second bottom arc region has an elastic modulus of 5-30 GPa and a porosity of 40-70%, the third top arc region has an elastic modulus of 40-80 GPa and a porosity of 50-80%, the third bottom arc region has an elastic modulus of 5-30 GPa and a porosity of 40-70%, the fourth top arc region has an elastic modulus of 40-80 GPa and a porosity of 50-80%, the fourth bottom arc region has an elastic modulus of 5-30 GPa and a porosity of 40-70%, the second bottom arc region and the fourth bottom arc region have a friction coefficient of 0.9-1.1, the first bottom arc region and the third bottom arc region have a friction coefficient of 0.7-0.9, and the first top arc region, the second top arc region, the third top arc region and the fourth top arc region have a friction coefficient of 0.7-1.1.

[0011] Further, the femoral component comprises a connecting stem, a filling part and a femoral stem, and the connecting stem and the femoral stem are connected.

[0012] Further, the filling part has a vertical cross-section in the shape of a trapezoid, and the cross-sectional area of the filling part gradually decreases from the connecting stem to the femoral stem.

[0013] Further, the filling part comprises a femoral neck filling region and a medullary cavity filling region, and the elastic modulus of the femoral neck filling region is different from that of the medullary cavity filling region.

[0014] Further, a femoral transition region is arranged between the femoral neck filling region and the medullary cavity filling region.

[0015] Further, the porosity of the femoral gap filling area is between 50% and 60%, the friction coefficient is designed to be between 0.8 and 1, the porosity of the medullary cavity filling area is between 50% and 80%, and the friction coefficient is between 1.1 and 1.3.

[0016] With the technical scheme of the present application, the liner is installed in the acetabular cup, and the ball head is installed in the liner. The femoral component is connected with the ball head, and the outer surface of the acetabular cup has a plurality of areas with different elastic moduli. Through the above arrangement, the elastic moduli of the plurality of areas of the acetabular cup are different, which can optimize the mechanical transmission of the acetabular cup and improve the service life of the acetabular prosthesis assembly. Therefore, the technical scheme of the present application effectively solves the problem that the hip joint prosthesis in the related art causes stress shielding, thereby affecting long-term use. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings accompanying the specification of the present application form a part thereof, serve to provide further understanding of the present application, and together with the description of the exemplary embodiments of the present application and the explanation thereof serve to explain the present application, and do not constitute an improper limitation on the present application. In the drawings:

[0018] Figure 1 A perspective structural schematic diagram of an embodiment of a hip joint prosthesis system according to the present application is shown;

[0019] Figure 2 A perspective structural schematic diagram of the acetabular cup of the hip joint prosthesis system of Figure 1 after implantation is shown;

[0020] Figure 3 A perspective structural schematic diagram of the acetabular cup of the hip joint prosthesis system of Figure 1 is shown;

[0021] Figure 4 A top view schematic diagram of the acetabular cup of the hip joint prosthesis system of Figure 3 is shown;

[0022] Figure 5 A sectional view schematic diagram of the first top arc-shaped area and the third top arc-shaped area of the acetabular cup of the hip joint prosthesis system of Figure 3 is shown;

[0023] Figure 6 A sectional view schematic diagram of the second top arc-shaped area and the fourth top arc-shaped area of the acetabular cup of the hip joint prosthesis system of Figure 3 is shown;

[0024] Figure 7 An internal structure schematic diagram of the acetabular cup of the hip joint prosthesis system of Figure 3 is shown;

[0025] Figure 8 A perspective structural schematic diagram of the femoral component of the hip joint prosthesis system of Figure 1 is shown;

[0026] Figure 9 a cross-sectional view of a filling member of a femoral component is shown; Figure 8

[0027] Figure 10 a cross-sectional view of a filling member of a femoral component is shown; Figure 8

[0028] wherein the above figures include the following reference signs:

[0029] 10, acetabular cup; 11, first drug-loading channel; 20, ball head; 30, femoral component; 31, connecting stem; 32, filling member; 321, femoral distance filling area; 322, medullary cavity filling area; 323, femoral transition area; 324, second drug-loading channel; 33, femoral stem; 40, top arc-shaped area; 41, first top arc-shaped area; 42, second top arc-shaped area; 43, third top arc-shaped area; 44, fourth top arc-shaped area; 50, bottom arc-shaped area; 51, first bottom arc-shaped area; 52, second bottom arc-shaped area; 53, third bottom arc-shaped area; 54, fourth bottom arc-shaped area; 60, top transition area; 70, bottom transition area. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be apparently and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation on the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without any creative work, belong to the scope of protection of the present application.

[0031] It should be noted that the terms used herein are only for the purpose of describing 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 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.

[0032] ​​Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0033] like Figures 1 to 7 As shown, in this embodiment, the hip joint prosthesis system includes: an acetabular cup 10, a liner, a ball head 20, and a femoral member 30. The ball head 20 is installed inside the liner, and the liner is installed inside the acetabular cup 10. The femoral member 30 is connected to the ball head 20. The outer surface of the acetabular cup 10 has multiple regions, each with a different elastic modulus.

[0034] Applying the technical solution of this embodiment, the liner is installed inside the acetabular cup 10, and the ball head 20 is installed inside the liner. The femoral component 30 is connected to the ball head 20. The outer surface of the acetabular cup 10 has multiple regions with different elastic moduli. Through the above-described arrangement, the elastic moduli of the multiple regions of the acetabular cup 10 are different, which optimizes the mechanical transmission of the acetabular cup 10 and improves the service life of the acetabular prosthesis assembly. Therefore, the technical solution of this embodiment effectively solves the problem in related technologies where hip joint prostheses cause stress shielding, thus affecting long-term use.

[0035] It should be noted that different elastic moduli in multiple regions means that the elastic moduli in multiple regions are not the same.

[0036] like Figures 1 to 7 As shown, in this embodiment, the inner spherical surface of the acetabular cup 10 needs to be used in conjunction with the lining of polyethylene and ceramic materials, so the inner spherical surface is a solid metal part, while the design parameters of the outer spherical surface interface need to be the same as the physiological acetabular bone parameters. Therefore, from the outside to the inside of the porous structure on the cross-section of the acetabular cup 10, the density of the porous structure gradually increases, the porosity of the porous structure gradually decreases, and the strength of the porous structure gradually increases.

[0037] like Figures 1 to 7As shown, in this embodiment, the multiple regions include multiple top arcuate regions 40 and multiple bottom arcuate regions 50 located below the multiple top arcuate regions 40. The elastic modulus of adjacent top arcuate regions 40 is different from that of the bottom arcuate regions 50. This arrangement allows different regions of the acetabular cup 10 to have different elastic moduli. Specifically, the multiple top arcuate regions 40 bear 20% of the load, and the multiple bottom arcuate regions 50 bear 80% of the load.

[0038] like Figures 1 to 7 As shown, in this embodiment, the plurality of top arc-shaped regions 40 include a first top arc-shaped region 41, a second top arc-shaped region 42, a third top arc-shaped region 43, and a fourth top arc-shaped region 44. The plurality of bottom arc-shaped regions 50 include a first bottom arc-shaped region 51 adjacent to the first top arc-shaped region 41, a second bottom arc-shaped region 52 adjacent to the second top arc-shaped region 42, a third bottom arc-shaped region 53 adjacent to the third top arc-shaped region 43, and a fourth bottom arc-shaped region 54 adjacent to the fourth top arc-shaped region 44. The elastic modulus of the first top arc-shaped region 41 is less than that of the first bottom arc-shaped region 51, the elastic modulus of the second top arc-shaped region 42 is greater than that of the second bottom arc-shaped region 52, the elastic modulus of the third top arc-shaped region 43 is greater than that of the third bottom arc-shaped region 53, and the elastic modulus of the fourth top arc-shaped region 44 is greater than that of the fourth bottom arc-shaped region 54. The above settings can be configured according to the specific circumstances of the patient to make the acetabular prosthesis more suitable for the patient.

[0039] Specifically, in this embodiment, the elastic moduli of the first top arc-shaped region 41, the second top arc-shaped region 42, the third top arc-shaped region 43, and the fourth top arc-shaped region 44 are all different. The elastic moduli of the first bottom arc-shaped region 51, the second bottom arc-shaped region 52, the third bottom arc-shaped region 53, and the fourth bottom arc-shaped region 54 are also different.

[0040] Of course, to ensure that the needs of patients are tailored to their individual circumstances, the elastic moduli of the first top arc-shaped region 41, the second top arc-shaped region 42, the third top arc-shaped region 43, and the fourth top arc-shaped region 44 may be partially the same. The elastic moduli of the first bottom arc-shaped region 51, the second bottom arc-shaped region 52, the third bottom arc-shaped region 53, and the fourth bottom arc-shaped region 54 may also be partially the same.

[0041] In embodiments not shown in the figure, only two top arcuate regions and two bottom arcuate regions are provided on the acetabular cup, or there are three top arcuate regions and three bottom arcuate regions, or there are five top arcuate regions and five bottom arcuate regions, or more regions are provided.

[0042] In an embodiment not shown in the figures, the number of top arc regions is less than the number of bottom arc regions.

[0043] As shown in the figure, in the embodiment, the plurality of regions further comprises a plurality of top transition regions 60 and a plurality of bottom transition regions 70, each of the top transition regions 60 is located between two adjacent top arc regions 40, and each of the bottom transition regions 70 is located between two adjacent bottom arc regions 50. The plurality of top transition regions 60 can make the connection of the plurality of top arc regions 40 more stable, and the plurality of bottom transition regions 70 can make the connection of the plurality of bottom arc regions 50 more stable. Figures 1 to 7

[0044] The plurality of regions can be processed by different metals.

[0045] As shown in the figure, in the embodiment, since the porosity structure parameters of two adjacent regions are different, the design parameters of the two sections of the top transition regions 60 and the plurality of bottom transition regions 70 are respectively the same as those of the two adjacent regions, so as to realize gradual transition and prevent cracking in the processing process and uneven load transmission in the clinical application. Figures 1 to 7

[0046] As shown in the figure, in the embodiment, the areas of the first top arc region 41, the second top arc region 42, the third top arc region 43 and the fourth top arc region 44 are equal, and the areas of the first bottom arc region 51, the second bottom arc region 52, the third bottom arc region 53 and the fourth bottom arc region 54 are equal. The above-mentioned setting can make the processing more simple and convenient to set. Figures 1 to 7 In an embodiment not shown in the figures, the areas of the first top arc region, the second top arc region, the third top arc region and the fourth top arc region are all different or partially the same, and the areas of the first bottom arc region, the second bottom arc region, the third bottom arc region and the fourth bottom arc region are all different or partially the same.

[0047] It should be noted that the first top arc region 41, the second top arc region 42, the third top arc region 43 and the fourth top arc region 44 are all triangles, and the first bottom arc region 51, the second bottom arc region 52, the third bottom arc region 53 and the fourth bottom arc region 54 are all trapezoids.

[0048] As shown in the figure, in the embodiment, the plurality of regions further comprises a plurality of top transition regions 60 and a plurality of bottom transition regions 70, each of the top transition regions 60 is located between two adjacent top arc regions 40, and each of the bottom transition regions 70 is located between two adjacent bottom arc regions 50. The plurality of top transition regions 60 can make the connection of the plurality of top arc regions 40 more stable, and the plurality of bottom transition regions 70 can make the connection of the plurality of bottom arc regions 50 more stable.

[0049] Figures 1 to 7 ​​​As shown, specifically, in the present embodiment, the first top arc-shaped region 41 and the first bottom arc-shaped region 51 mainly bear positive pressure, the second top arc-shaped region 42 and the second bottom arc-shaped region 52 and the fourth top arc-shaped region 44 and the fourth bottom arc-shaped region 54 mainly bear shear force, and the third top arc-shaped region 43 and the third bottom arc-shaped region 53 bear the least load.

[0050] In the prior art, the elastic modulus of the acetabular cup is between 40GPa and 80GPa, and the inventors of the present application improve the use effect of the acetabular cup and the recovery effect after implantation, such as Figures 1 to 7 As shown, in the present embodiment, the elastic modulus of the first top arc-shaped region 41 is between 40GPa and 80GPa, the porosity is between 50% and 80%, the elastic modulus of the first bottom arc-shaped region 51 is between 60GPa and 100GPa, the porosity is between 20% and 50%, the elastic modulus of the second top arc-shaped region 42 is between 40GPa and 80GPa, the porosity is between 50% and 80%, the elastic modulus of the second bottom arc-shaped region 52 is between 5GPa and 30GPa, the porosity is between 40% and 70%, the elastic modulus of the third top arc-shaped region 43 is between 40GPa and 80GPa, the porosity is between 50% and 80%, the elastic modulus of the third bottom arc-shaped region 53 is between 5GPa and 30GPa, the porosity is between 40% and 70%, the elastic modulus of the fourth top arc-shaped region 44 is between 40GPa and 80GPa, the porosity is between 50% and 80%, the elastic modulus of the fourth bottom arc-shaped region 54 is between 5GPa and 30GPa, the porosity is between 40% and 70%, the friction coefficient of the second bottom arc-shaped region 52 and the fourth bottom arc-shaped region 54 is between 0.9 and 1.1, the friction coefficient of the first bottom arc-shaped region 51 and the third bottom arc-shaped region 53 is between 0.7 and 0.9, and the friction coefficient of the first top arc-shaped region 41, the second top arc-shaped region 42, the third top arc-shaped region 43 and the fourth top arc-shaped region 44 is between 0.7 and 1.1. According to the analysis of different regions, the compression resistance of the porous structure of the first top arc-shaped region 41 and the first bottom arc-shaped region 51, which bear positive pressure, is improved, the porosity is designed to be 50%~60%, and the friction coefficient is designed to be about 0.9; the shear resistance of the porous structure of the second top arc-shaped region 42 and the second bottom arc-shaped region 52 and the fourth top arc-shaped region 44 and the fourth bottom arc-shaped region 54, which bear shear force, is improved, the porosity is designed to be 60%~80%, and the friction coefficient is designed to be about 1.2; the region with the least load (the third top arc-shaped region 43 and the third bottom arc-shaped region 53) is designed with a high friction coefficient to prevent the prosthesis from overturning with the second top arc-shaped region 42 and the second bottom arc-shaped region 52 and the fourth top arc-shaped region 44 and the fourth bottom arc-shaped region 54 as the axis.

[0051] Specifically, the elastic modulus of the first top arc-shaped region 41 is 45 GPa and the porosity is 75%; the elastic modulus of the first bottom arc-shaped region 51 is 70 GPa and the porosity is 50%; the elastic modulus of the second top arc-shaped region 42 is 60 GPa and the porosity is 70%, the elastic modulus of the second bottom arc-shaped region 52 is 10 GPa and the porosity is 50%; the elastic modulus of the third top arc-shaped region 43 is between 65 GPa and 65%, the elastic modulus of the third bottom arc-shaped region 53 is 15 GPa and the porosity is 45%; the elastic modulus of the fourth top arc-shaped region 44 is 70 GPa and the porosity is 60%, the elastic modulus of the fourth bottom arc-shaped region 54 is 20 GPa and the porosity is 50%.

[0052] Of course, the elastic modulus of the first top arc region 41, the second top arc region 42, the third top arc region 43 and the fourth top arc region 44 can also be 40GPa, 45GPa, 50GPa, 55GPa, 60GPa, 65GPa, 70GPa, 75GPa or 80GPa.

[0053] The elastic modulus of the first bottom arc-shaped region 51 can be 65GPa, 70GPa, 75GPa, 80GPa, 85GPa, 90GPa or 95GPa.

[0054] The elastic modulus of the second bottom arc-shaped region 52 can be 10 GPa, 15 GPa, 20 GPa or 25 GPa.

[0055] The elastic modulus of the third bottom arc-shaped region 53 can be 10 GPa, 15 GPa, 20 GPa or 25 GPa.

[0056] The elastic modulus of the fourth bottom arc-shaped region 54 can be 10 GPa, 15 GPa, 20 GPa or 25 GPa.

[0057] Specifically, such as Figures 1 to 7 As shown, in this embodiment, to meet the clinical requirement of edge fixation, the curve radii or curve centers of the first top arc-shaped region 41 and the first bottom arc-shaped region 51 are different, causing the first bottom arc-shaped region 51 to bulge slightly outward with a height difference of 0.2–1 mm, which can improve the initial stability of the acetabular cup 10. The remaining regions are the same as described above.

[0058] like Figures 1 to 7 As shown, in this embodiment, a first drug-carrying channel 11 is provided inside the acetabular cup 10. This improves bone ingrowth after implantation. Specifically, the drug is inserted into the first drug-carrying channel 11, and after implantation, bone ingrowth can be achieved rapidly under the action of the drug.

[0059] like Figures 8 to 10 As shown, in this embodiment, the femoral component 30 includes a connecting handle 31, a filling component 32, and a femoral stem 33, with the connecting handle 31 and the femoral stem 33 being connected. This configuration enables the femoral component 30 to connect with the human femur.

[0060] like Figures 8 to 10 As shown, in this embodiment, the vertical cross-section of the filling component 32 is trapezoidal, and the cross-sectional area of ​​the filling component 32 gradually decreases from the connecting handle 31 to the femoral stem 33. The filling component 32 includes a femoral stature filling area 321 and a medullary canal filling area 322, which have different elastic moduli. Depending on the fixation method used in implantation, the filling component 32 can be divided into a femoral stature filling area 321 and a medullary canal filling area 322. The main load-bearing mode of the femoral stature filling area 321 is normal pressure, while the main load-bearing mode of the medullary canal filling area 322 is shear force. This allows the filling component 32 to adapt to the human femur.

[0061] like Figures 8 to 10 As shown, in this embodiment, a femoral transition region 323 is provided between the femoral stature filling region 321 and the medullary canal filling region 322. The femoral transition region 323 is designed between the femoral stature filling region and the medullary canal filling region. Because the pore structure parameters of the femoral stature filling region 321 and the medullary canal filling region 322 are different, the design parameters of the two cross-sections of the femoral transition region 323 are the same as those of the two phase regions, used for gradual transition, preventing cracking during processing and uneven load transmission in clinical applications.

[0062] like Figures 8 to 10 As shown, in this embodiment, the porosity of the femoral stature filling region 321 is between 50% and 60%, and the friction coefficient is designed to be between 0.8 and 1. The porosity of the medullary cavity filling region 322 is between 50% and 80%, and the friction coefficient is between 1.1 and 1.3. The compressive strength of the porous structure in the femoral stature filling region 321, which bears normal pressure, is improved, with a porosity designed to be 50%–60% and a friction coefficient designed to be approximately 0.9. Similarly, the shear strength of the porous structure in the medullary cavity filling region 322, which bears shear force, is improved, with a porosity designed to be 50%–80% and a friction coefficient designed to be approximately 1.2. These settings are more adaptable to the human body and can be customized according to the patient's bone condition, especially suitable for patients with osteoporosis, elderly patients, and patients with extreme bone parameters.

[0063] like Figures 8 to 10 As shown, in this embodiment, a second drug-carrying channel 324 is provided inside the filling component 32. This improves bone ingrowth after implantation.

[0064] likeFigures 1 to 10 In the embodiment, the technical scheme of the embodiment adopts EBM metal 3D printing forming.

[0065] Specifically, the hip joint prosthesis system is made of titanium alloy, or made of cobalt-chromium-nickel metal, or other technical materials. The bone interface of the acetabular cup 10 and the femoral component 30 is a trabecular bone type porous structure, which is beneficial to the host bone ingrowth. The acetabular cup 10 and the filling component 32 adopt a zoning concept, different design parameters are used in different positions, so as to realize a personalized gap structure of the femoral prosthesis. The design of the gradually changing structure form between the inner tapered surface of the filling component 32 and the bone interface.

[0066] In the description of the present application, it should be understood that the orientation words such as "front, back, up, down, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and in the absence of contrary statements, these orientation words do not indicate and imply that the devices or elements referred to must have a particular orientation or be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0067] For the convenience of description, spatial relative terms such as "on", "above", "upper surface", "upper" and the like can be used herein to describe the spatial positional relationship of one device or feature with other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the devices described in the drawings. For example, if the devices in the drawings are inverted, the device described as "above" or "on" other devices or structures will be positioned "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein are interpreted accordingly.

[0068] In addition, it should be noted that the use of the words "first", "second" and the like to define parts only facilitates the differentiation of the corresponding parts, and the above words have no special meaning unless otherwise stated, and therefore cannot be understood as a limitation on the scope of protection of the present application.

[0069] The above merely provides the preferred embodiments of the present application, and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the principles and technical scope of the present application shall fall into the scope of the present application.

Claims

1. A hip joint prosthesis system, characterized in that The hip joint prosthesis comprises: a cup (10); a liner installed in the cup; a ball head (20) installed in the liner; a femoral component (30) connected to the ball head (20); wherein the outer surface of the cup (10) has a plurality of regions with different elastic moduli; the plurality of regions comprises a plurality of top arc regions (40) and a plurality of bottom arc regions (50) located below the plurality of top arc regions (40), the elastic modulus of the top arc regions (40) and the bottom arc regions (50) arranged adjacently upward and downward are different; the plurality of top arc regions (40) comprises a first top arc region (41), a second top arc region (42), a third top arc region (43), and a fourth top arc region (44), the plurality of bottom arc regions (50) comprises a first bottom arc region (51) adjacent to the first top arc region (41), a second bottom arc region (52) adjacent to the second top arc region (42), a third bottom arc region (53) adjacent to the third top arc region (43), and a fourth bottom arc region (54) adjacent to the fourth top arc region (44), the elastic modulus of the first top arc region (41) is less than that of the first bottom arc region (51), the elastic modulus of the second top arc region (42) is greater than that of the second bottom arc region (52), the elastic modulus of the third top arc region (43) is greater than that of the third bottom arc region (53), and the elastic modulus of the fourth top arc region (44) is greater than that of the fourth bottom arc region (54).

2. The hip prosthesis system of claim 1, wherein, The plurality of regions further comprises a plurality of top transition regions (60) and a plurality of bottom transition regions (70), each of the top transition regions (60) is located between two adjacent top arc regions (40), and each of the bottom transition regions (70) is located between two adjacent bottom arc regions (50).

3. The hip prosthesis system of claim 2, wherein, The areas of the first top arc region (41), the second top arc region (42), the third top arc region (43), and the fourth top arc region (44) are equal, and the areas of the first bottom arc region (51), the second bottom arc region (52), the third bottom arc region (53), and the fourth bottom arc region (54) are equal.

4. The hip prosthesis system of claim 1, wherein, The first top arc-shaped region (41) has an elastic modulus of 40-80 GPa and a porosity of 50-80%, the first bottom arc-shaped region (51) has an elastic modulus of 60-100 GPa and a porosity of 20-50%, the second top arc-shaped region (42) has an elastic modulus of 40-80 GPa and a porosity of 50-80%, the second bottom arc-shaped region (52) has an elastic modulus of 5-30 GPa and a porosity of 40-70%, the third top arc-shaped region (43) has an elastic modulus of 40-80 GPa and a porosity of 50-80%, the third bottom arc-shaped region (53) has an elastic modulus of 5-30 GPa and a porosity of 40-70%, the fourth top arc-shaped region (44) has an elastic modulus of 40-80 GPa and a porosity of 50-80%, the fourth bottom arc-shaped region (54) has an elastic modulus of 5-30 GPa and a porosity of 40-70%, the second bottom arc-shaped region (52) and the fourth bottom arc-shaped region (54) have a friction coefficient of 0.9-1.1, the first bottom arc-shaped region (51) and the third bottom arc-shaped region (53) have a friction coefficient of 0.7-0.9, and the first top arc-shaped region (41), the second top arc-shaped region (42), the third top arc-shaped region (43) and the fourth top arc-shaped region (44) have a friction coefficient of 0.7-1.

1.

5. The hip prosthesis system according to any one of claims 1 to 4, characterized in that The femoral component (30) comprises a connecting stem (31), a filling part (32) and a femoral stem (33), and the connecting stem (31) and the femoral stem (33) are connected.

6. The hip prosthesis system of claim 5, wherein, The filling part (32) has a trapezoidal vertical cross section, and the cross-sectional area of the filling part (32) gradually decreases from the connecting stem (31) to the femoral stem (33).

7. The hip prosthesis system of claim 6, wherein, The filling part (32) comprises a femoral joint filling area (321) and a medullary cavity filling area (322), and the elastic modulus of the femoral joint filling area (321) and the medullary cavity filling area (322) is different.

8. The hip prosthesis system of claim 7, wherein, A femoral transition area (323) is arranged between the femoral joint filling area (321) and the medullary cavity filling area (322).

9. The hip prosthesis system of claim 7, wherein, The porosity of the femoral joint filling area (321) is 50-60%, and the friction coefficient is designed to be 0.8-1, and the porosity of the medullary cavity filling area (322) is 50-80%, and the friction coefficient is 1.1-1.3.

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