Acetabular patch and acetabular patch system

Abstract

The application discloses a kind of acetabulum patch and acetabulum patch system, the acetabulum patch includes main body and adjusting piece, main body includes first distraction and second distraction, one end of first distraction is rotatably connected with the end of second distraction, the side surface of first distraction away from second distraction is fitted with acetabular cup, the side surface of second distraction away from first distraction is fitted with acetabular bone, adjusting piece is arranged on main body, and adjusting piece can adjust the relative distraction angle of first distraction and second distraction and keep first distraction and second distraction at distraction angle.The acetabulum patch of the application can be flexibly equipped with various bone defect values, has high universality, does not need to grind acetabular bone mass, reduces the difficulty of operation, and also does not need to reconstruct patch according to bone defect value, saves cost.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and more specifically, to an acetabular patch and an acetabular patch system. Background Technology

[0002] Acetabular bone defects are common in hip revision surgeries and can also occur in primary hip replacement surgeries. In cases of severe acetabular bone defects, patch support is often required to improve initial stability in order to implant a cementless acetabular prosthesis for biocompatible fixation. In recent years, metal reinforcement blocks have been widely used as patches for acetabular bone defect reconstruction, achieving good functional outcomes and long-term survival rates. However, because the bone defect value varies from patient to patient, the required patch size also varies. Currently, there are relatively few commonly used patch sizes on the market, making it difficult to achieve a perfect match with the actual bone defect value during surgery. This sometimes necessitates grinding down a portion of the remaining acetabular bone, increasing the surgical difficulty, or reconstructing the patch according to the bone defect value, increasing costs. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide an acetabular patch in view of the defects and deficiencies of the prior art. The acetabular patch includes a first spreading part and a second spreading part that are movably connected. An adjusting member can adjust and fix the spreading angle of the first spreading part and the second spreading part. Thus, for different bone defect values, the adjusting member can be used to spread the first spreading part and the second spreading part to a suitable angle, thereby flexibly accommodating various bone defect values. It has high versatility, does not require grinding the acetabular bone, reduces the difficulty of surgery, and does not require rebuilding the patch according to the bone defect value, thus saving costs.

[0004] Embodiments of the present invention also propose an acetabular patch system.

[0005] The acetabular patch of this invention includes: a main body, the main body including a first spreading portion and a second spreading portion, one end of the first spreading portion and one end of the second spreading portion being rotatably connected, the side of the first spreading portion opposite to the second spreading portion fitting against the acetabular cup, and the side of the second spreading portion opposite to the first spreading portion fitting against the acetabular bone; and an adjusting member, the adjusting member being disposed on the main body, and the adjusting member being able to adjust the relative spreading angle of the first spreading portion and the second spreading portion and maintain the first spreading portion and the second spreading portion at the spreading angle.

[0006] The acetabular patch of this invention includes a first spreading part and a second spreading part that are movably connected. An adjusting member can adjust the relative spreading angle of the first spreading part and the second spreading part and keep the first spreading part and the second spreading part at the spreading angle. Thus, for different bone defect values, the adjusting member can be used to spread the first spreading part and the second spreading part to the appropriate angle, thereby flexibly accommodating various bone defect values. It has high versatility, does not require grinding the acetabular bone, reduces the difficulty of surgery, and does not require rebuilding the patch according to the bone defect value, saving costs.

[0007] In some embodiments, the outer end face of the main body away from the connection between the first expansion portion and the second expansion portion has an adjustment hole. The adjustment hole includes a mating hole section, the opening of which is located on the outer end face. A portion of the mating hole section is formed in the first expansion portion, and another portion is formed in the second expansion portion. The adjustment member is fitted into the adjustment hole. The mating hole section and / or the portion of the adjustment member that passes through the mating hole section is a tapered structure that gradually tapers away from the outer end face.

[0008] In some embodiments, the mating hole section is a threaded hole section, the adjusting member is a threaded member, and the adjusting hole extends in a direction perpendicular to the outer end face; and / or, the length of the adjusting member ranges from 15mm to 45mm.

[0009] In some embodiments, the threaded hole section is a tapered structure, the adjusting member includes a tapered section, the tapered section fits within the threaded hole section, and the taper of the tapered section is greater than the taper of the threaded hole section.

[0010] In some embodiments, the adjusting hole further includes a guide hole section, which communicates with the tapered hole section and is a smooth hole; the threaded component further includes a straight thread section, which passes through the guide hole section.

[0011] In some embodiments, the side of the first supporting portion away from the second supporting portion is an inner arc surface that is recessed toward the second supporting portion, and the side of the second supporting portion away from the first supporting portion is an outer arc surface that protrudes toward a direction away from the first supporting portion.

[0012] And / or, the side of the second support portion opposite to the first support portion is provided with a coating;

[0013] And / or, the thickness of the thickest part of the body ranges from 5mm to 15mm;

[0014] And / or, the width of the body is in the range of 7mm-25mm.

[0015] In some embodiments, the side of the first supporting portion opposite to the side of the second supporting portion and / or the side of the second supporting portion opposite to the side of the first supporting portion are provided with a plurality of spaced-apart reverse teeth; and / or, the first supporting portion and the second supporting portion are integrally connected, and the connection can be elastically deformed to make the first supporting portion and the second supporting portion move closer to or further away from each other.

[0016] In some embodiments, the angle between the extension direction of the reverse tooth and the tangent direction of the side where the reverse tooth is located is α, then the following condition is met: 65° ≤ α ≤ 83°; the protrusion dimension of the reverse tooth is d, then the following condition is met: 0.2mm ≤ d ≤ 0.6mm.

[0017] In some embodiments, the thickness dimension of the connection is L, which satisfies 0.3mm≤L≤1mm.

[0018] The acetabular patch of the present invention includes: a main body, the main body including a first spreading portion and a second spreading portion, one end of the first spreading portion and one end of the second spreading portion being rotatably connected, the side of the first spreading portion opposite to the second spreading portion conforming to the acetabular cup, and the side of the second spreading portion opposite to the first spreading portion conforming to the acetabular bone; and a locking member, the locking member being disposed on the main body and having a locking position and a releasing position. In the locking position, the locking member can lock the first spreading portion and the second spreading portion, and the first spreading portion and the second spreading portion cannot rotate relative to each other. In the releasing position, the locking member can release the first spreading portion and the second spreading portion, and the first spreading portion and the second spreading portion can rotate relative to each other.

[0019] The acetabular patch of the present invention comprises a first and a second movably connected part. A locking member can lock and release the first and second moving parts. Thus, for different bone defect values, the first and second moving parts can be released and locked by the locking member after they are opened to the appropriate angle. That is, the first and second moving parts can be flexibly opened and locked to flexibly accommodate various bone defect values. It has high versatility, does not require grinding the acetabular bone, reduces the difficulty of surgery, and does not require rebuilding the patch according to the bone defect value, thus saving costs.

[0020] The acetabular patch system of the present invention includes multiple acetabular patches, which are the acetabular patches described in the above embodiments, and the basic thickness of the multiple acetabular patches increases by 2 mm.

[0021] The acetabular patch system of this invention provides multiple acetabular patches with different base thicknesses for assembly selection, and the multiple acetabular patches increase in 2mm increments. The approximate selection range of the required acetabular patches can be deduced based on the needs, facilitating quick selection of the required acetabular patches. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the acetabular patch according to an embodiment of the present invention.

[0023] Figure 2 This is a schematic diagram of the structure of the adjusting member of the acetabular patch according to an embodiment of the present invention.

[0024] Figure 3 This is a cross-sectional view of the main body of the acetabular patch according to an embodiment of the present invention.

[0025] Figure 4 yes Figure 3 Enlarged view of section A.

[0026] Figure 5 This is a schematic diagram of the structure of the acetabular patch according to an embodiment of the present invention, wherein there are two adjustment holes.

[0027] Figure 6 This is a side view of the acetabular patch according to an embodiment of the present invention.

[0028] Figure label:

[0029] Main body 1, first supporting part 11, second supporting part 12, adjusting hole 13, threaded hole section 131, guide hole section 132, reverse tooth 14, adjusting part 2, tapered section 21, straight thread section 22. Detailed Implementation

[0030] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0031] like Figures 1-6 As shown, the acetabular patch of this embodiment includes a main body 1 and an adjusting member 2.

[0032] like Figures 1-6 As shown, the main body 1 includes a first spreading part 11 and a second spreading part 12. One end of the first spreading part 11 is rotatably connected to one end of the second spreading part 12. The side of the first spreading part 11 facing away from the second spreading part 12 fits against the acetabular cup. The side of the second spreading part 12 facing away from the first spreading part 11 fits against the acetabulum. An adjusting member 2 is provided on the main body 1, and the adjusting member 2 can adjust the relative spreading angle of the first spreading part 11 and the second spreading part 12 and keep the first spreading part 11 and the second spreading part 12 at the spreading angle.

[0033] In other words, the acetabular patch of this application includes two relatively openable opening portions, thereby allowing the opening angle to be flexibly adjusted according to the degree of bone defect in order to perfectly match various bone defect values.

[0034] The acetabular patch of this invention includes a main body 1 comprising a first spreading part 11 and a second spreading part 12 movably connected. An adjusting member 2 can adjust the relative spreading angle of the first spreading part 11 and the second spreading part 12 and maintain the first spreading part 11 and the second spreading part 12 at the spreading angle. Thus, for different bone defect values, the adjusting member 2 can be used to spread the first spreading part 11 and the second spreading part 12 to a suitable angle, thereby flexibly accommodating various bone defect values. It has high versatility, does not require grinding the acetabular bone, reduces the difficulty of surgery, and does not require rebuilding the patch according to the bone defect value, saving costs.

[0035] Furthermore, such as Figure 3 As shown, the outer end face of the main body 1 away from the connection between the first supporting part 11 and the second supporting part 12 has an adjustment hole 13. The adjustment hole 13 includes a mating hole section. The opening of the mating hole section is located on the outer end face, and part of the mating hole section is formed in the first supporting part 11, while another part of the mating hole section is formed in the second supporting part 12. The adjusting member 2 is fitted into the adjustment hole 13. The mating hole section and / or the part of the adjusting member 2 that passes through the mating hole section is a tapered structure that gradually tapers away from the outer end face.

[0036] It is understandable that the adjusting member 2, which is inserted into the adjusting hole 13, is sandwiched between the first opening part 11 and the second opening part 12. When the adjusting member 2 is inserted into the mating hole, since the mating hole section and / or the part of the adjusting member 2 inserted into the mating hole section is a tapered structure that gradually narrows away from the outer end face, as the insertion depth increases, the adjusting member 2 will stop against the inner wall of the mating hole section and gradually push the first opening part 11 and the second opening part 12 to rotate in the opening direction to increase the opening angle. When the adjusting member 2 is pulled out, the first opening part 11 and the second opening part 12 can rotate toward the line of defense that is close to each other to reduce the opening angle.

[0037] Preferably, such as Figure 3 As shown, the mating hole section is a threaded hole section 131, and the adjusting member 2 is a threaded member. The adjusting hole 13 extends in a direction perpendicular to the outer end face. Therefore, by setting the adjusting member 2 as a threaded member and the mating hole section as a threaded hole section 131, the control accuracy can be improved by using threaded adjustment. Moreover, the threaded engagement has an automatic anti-retraction function, which can realize automatic locking after adjustment without the need for a separate locking member. In addition, the vertical setting of the adjusting hole 13 facilitates the smooth turning of the threaded member.

[0038] It should be noted that the setting of the adjusting part 2 and the opening method is not limited to what is shown above, as long as it can satisfy the opening and locking of the first opening part 11 and the second opening part 12.

[0039] Preferably, such as Figure 2 and Figure 3As shown, the threaded hole section 131 has a tapered structure, and the adjusting member 2 includes a tapered section 21, which fits inside the threaded hole section 131. The taper of the tapered section 21 is greater than that of the threaded hole section 131. Therefore, due to the larger taper of the tapered section 21, as the adjusting member 2 extends, the outer wall of the tapered section 21 will gradually expand the threaded hole section 131, so that the first expanding part 11 and the second expanding part 12 can be rotated open.

[0040] Furthermore, such as Figure 2 As shown, the adjusting hole 13 also includes a guide hole section 132, which communicates with the tapered hole section and is a smooth hole. The threaded component also includes a straight thread section 22, which passes through the guide hole section 132. Thus, the guide hole section 132 can guide the insertion and removal of the adjusting component 2. Preferably, the opening of the guide hole section 132 is formed on the second opening portion 12, and the straight thread section 22 is provided with a nail tip so that after the straight thread section 22 extends out of the guide hole section 132, it can be screwed onto the acetabulum, further increasing the fixation effect.

[0041] In some embodiments, such as Figures 1-6 As shown, the side of the first supporting portion 11 facing away from the second supporting portion 12 is an inner arc surface concave towards the second supporting portion 12, and the side of the second supporting portion 12 facing away from the first supporting portion 11 is an outer arc surface convex in a direction away from the first supporting portion 11. Therefore, the side of the first supporting portion 11 facing the acetabular cup easily adapts to the outer surface of the acetabular cup, and the side of the second supporting portion 12 facing the acetabulum easily adapts to the inner surface of the acetabulum, resulting in a large support surface and stable support.

[0042] Furthermore, such as Figures 1-6 As shown, the first supporting part 11 is provided with a plurality of spaced reverse teeth 14 on the side opposite to the second supporting part 12 and / or the second supporting part 12 is provided with a plurality of spaced reverse teeth 14. The reverse teeth 14 cooperate with and engage with the acetabulum, which can play a better role in fixation.

[0043] Optionally, the side of the second support portion 12 opposite to the first support portion 11 is coated to induce bone growth. In this embodiment, the coating is an HA coating, but other coatings may be used in other embodiments.

[0044] Optionally, such as Figure 3 and Figure 4 As shown, the protruding dimension of the reverse tooth 14 is d, which satisfies the condition: 0.2mm ≤ d ≤ 0.6mm. For example, d can be 0.3mm, 0.4mm, or 0.5mm. Preferably, d is 0.4mm.

[0045] Optionally, such as Figure 4As shown, the angle between the extension direction of the inverted tooth 14 and the tangent direction of the side where the inverted tooth 14 is located is α, which satisfies: 65° ≤ α ≤ 83°. For example, α can be 70°, 72°, 75°, or 80°. Preferably, α is 74°.

[0046] Optionally, such as Figure 6 As shown, the first supporting part 11 and the second supporting part 12 are integrally connected, and the connection point can elastically deform to allow the first supporting part 11 and the second supporting part 12 to move closer to or further away from each other. In this embodiment, an arc-shaped cut is provided on the main body 1. This cut extends from the lower edge to the upper edge, but does not cut through the upper edge. The first supporting part 11 and the second supporting part 12 are formed by providing the cut. The uncut part of the upper edge is the connection point. At the same time, in order to ensure that the opening angle of the first supporting part 11 and the second supporting part 12 is sufficient, a cylinder is cut off at the upper edge to form a through hole, thereby expanding the opening angle of the first supporting part 11 and the second supporting part 12. Meanwhile, the elastic deformation of the connection point ensures that when the adjusting member 2 is pulled out, the first supporting part 11 and the second supporting part 12 can return to a state of being close to each other, thereby realizing the expansion and reduction of the opening angle of the first supporting part 11 and the second supporting part 12. Optionally, if the thickness of the connection point is L, then 0.3mm≤L≤1mm is satisfied. For example, L can be 0.5mm, 0.7mm, or 0.9mm. Therefore, by appropriately setting the value of L, both the structural strength of the connection can be guaranteed, and the flexibility of the connection between the first supporting part 11 and the second supporting part 12 can be ensured. In other embodiments, the first supporting part 11 and the second supporting part 12 can also be configured as separate structures.

[0047] Furthermore, the inventors discovered through research that, depending on the screw-in depth of the adjusting member 2, the total spreading distance can range from 0mm to 3mm, which can meet the adaptation requirements of conventional bone defect values. Optionally, the length of the adjusting member 2 can range from 15mm to 45mm.

[0048] Furthermore, such as Figure 5 As shown, there are multiple adjustment holes 13, which are spaced apart along the width of the main body 1. It should be noted that the width of the main body 1 varies to accommodate different widths of acetabular bone defects. When the width of the main body 1 is large, multiple adjustment holes 13 are provided to cooperate with multiple adjustment components 2 for adjustment, which can improve the stability and reliability of the adjustment process.

[0049] Optionally, the width of the main body 1 is between 7mm and 25mm. The inventors have found through research that the width of the main body 1 is between 7mm and 25mm, which can meet the adaptation requirements of conventional bone defect width. When the width of the main body 1 is between 7mm and 15mm (≤15mm), the number of adjustment holes 13 is one; when the width of the acetabular patch main body 1 is between 15mm and 21mm, the number of adjustment holes 13 is two.

[0050] In another embodiment of the present invention, the acetabular patch includes a body 1 and a locking member.

[0051] Specifically, the main body 1 includes a first spreading part 11 and a second spreading part 12. One end of the first spreading part 11 is rotatably connected to one end of the second spreading part. The side of the first spreading part 11 facing away from the second spreading part 12 fits against the acetabular cup. The side of the second spreading part 12 facing away from the first spreading part 11 fits against the acetabulum. A locking member is provided on the main body 1 and has a locking position and a releasing position. In the locking position, the locking member can lock the first spreading part 11 and the second spreading part 12, and the first spreading part 11 and the second spreading part 12 cannot rotate relative to each other. In the releasing position, the locking member can release the first spreading part 11 and the second spreading part 12, and the first spreading part 11 and the second spreading part 12 can rotate relative to each other.

[0052] Understandably, depending on the different bone defect values, the first expansion part 11 and the second expansion part 12 can be released using the locking device, and then the first expansion part 11 and the second expansion part 12 can be opened to the appropriate angle as needed, and then the first expansion part 11 and the second expansion part 12 can be locked and fixed using the locking device, so as to flexibly adapt to different bone defect values.

[0053] The acetabular patch of the present invention includes a main body 1 comprising a first opening portion 11 and a second opening portion 12 movably connected. A locking member can lock and release the first opening portion 11 and the second opening portion 12. Thus, for different bone defect values, the first opening portion 11 and the second opening portion 12 can be released and locked by the locking member after the first opening portion 11 and the second opening portion 12 are opened to the appropriate angle. That is, the first opening portion 11 and the second opening portion 12 can be flexibly opened and locked to flexibly accommodate various bone defect values. It has high versatility, does not require grinding the acetabular bone, reduces the difficulty of surgery, and does not require rebuilding the patch according to the bone defect value, thus saving costs.

[0054] The acetabular patch system of this invention includes multiple acetabular patches, which are the same as those in the above embodiment, and the basic thickness of the multiple acetabular patches increases by 2 mm.

[0055] It should be noted that the base thickness of a single acetabular patch is constant, and the base thickness must be at least smaller than the gap between the acetabular cup and the acetabulum to meet the assembly requirements of the acetabular patch. However, since the gap between the acetabular cup and the acetabulum varies among different patients, the base thickness of a single acetabular patch may not meet the requirements. Therefore, by constructing an acetabular patch system, multiple acetabular patches with different base thicknesses can be selected for assembly, and the multiple acetabular patches increase in 2mm increments. The approximate selection range of the required acetabular patch can be deduced based on the requirements, facilitating the rapid selection of the required acetabular patch.

[0056] The acetabular patch system of this invention provides multiple acetabular patches with different base thicknesses for assembly selection, and the multiple acetabular patches increase in 2mm increments. The approximate selection range of the required acetabular patches can be deduced based on the needs, facilitating quick selection of the required acetabular patches.

[0057] Optionally, the thickness of the thickest part of the acetabular patch body 1 ranges from 5mm to 15mm, that is, the base thickness of the multiple acetabular patches included in the acetabular patch system is 5mm, 7mm, 9mm, 11mm, 13mm, and 15mm.

[0058] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0059] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0060] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0061] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0062] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0063] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An acetabular patch, comprising: The application relates to a hip joint prosthesis, comprising: a main body, which comprises a first distraction part and a second distraction part, one end of the first distraction part is rotatably connected with one end of the second distraction part, the side of the first distraction part facing away from the second distraction part is matched with a hip joint cup, and the side of the second distraction part facing away from the first distraction part is matched with a hip joint bone; an adjusting part arranged on the main body, which can adjust the relative distraction angle of the first distraction part and the second distraction part and keep the first distraction part and the second distraction part at the distraction angle; the outer end surface of the main body away from the connection between the first distraction part and the second distraction part is provided with an adjusting hole, the adjusting hole comprises a matching hole section, the opening of the matching hole section is located on the outer end surface, and part of the matching hole section is formed in the first distraction part and the other part of the matching hole section is formed in the second distraction part, the adjusting part is matched in the adjusting hole, and the part of the matching hole section and / or the adjusting part is a taper structure gradually shrinking in the direction away from the outer end surface.

2. The acetabular patch of claim 1, wherein, The matching hole section is a threaded hole section, the adjusting part is a threaded part, and the adjusting hole extends in the direction perpendicular to the outer end surface; and / or the length of the adjusting part ranges from 15 mm to 45 mm.

3. The acetabular patch of claim 2, wherein, The threaded hole section is a taper structure, the adjusting part comprises a taper section matched in the threaded hole section, and the taper of the taper section is greater than the taper of the threaded hole section.

4. The acetabular patch of claim 3, wherein, The adjusting hole further comprises a guide hole section in communication with the taper hole section and the guide hole section is a light hole, and the threaded part further comprises a straight thread section threaded in the guide hole section.

5. The acetabular patch of claim 1, wherein, The side of the first distraction part facing away from the second distraction part is an inner arc surface recessed towards the second distraction part, and the side of the second distraction part facing away from the first distraction part is an outer arc surface protruding in the direction away from the first distraction part; and / or the side of the second distraction part facing away from the first distraction part is provided with a coating; and / or the thickness of the thickest part of the main body ranges from 5 mm to 15 mm; and / or the width of the main body ranges from 7 mm to 25 mm.

6. The acetabular patch of claim 1, wherein, The side of the first distraction part facing away from the second distraction part and / or the side of the second distraction part facing away from the first distraction part is provided with a plurality of spaced inverted teeth; and / or the first distraction part and the second distraction part are integrally connected, and the connection part is elastically deformable to make the first distraction part and the second distraction part close to or away from each other.

7. The acetabular patch of claim 6, wherein, The angle between the extension direction of the inverted tooth and the tangent direction of the side surface where the inverted tooth is located is a, and 65 degrees<=a<=83 degrees is satisfied; and / or the protruding size of the inverted tooth is d, and 0.2 mm<=d<=0.6 mm is satisfied.

8. The acetabular patch of claim 6, wherein, The thickness size of the connection part is L, and 0.3 mm<=L<=1 mm is satisfied.

9. An acetabular patch system, characterized in that The application further relates to a plurality of hip joint prosthesis blocks, the hip joint prosthesis block is the hip joint prosthesis block according to any one of claims 1-8, and the basic thickness size of the plurality of hip joint prosthesis blocks increases by 2 mm.

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