Novel cermet reverse shoulder prosthesis system and method of making

Abstract

The application relates to the technical field of medical devices, in particular to a novel metal ceramic reverse type shoulder joint prosthesis system and a preparation method thereof. The system comprises a humeral stem, a humeral holder, a humeral pad, a reverse type glenoid head, a taper adapter and a glenoid holder which are sequentially assembled together. The humeral holder, the humeral pad, the reverse type glenoid head and the taper adapter are all formed by 3D zirconium niobium metal printing or forging; the humeral stem and the glenoid holder are integrally formed by 3D printing zirconium niobium alloy, and the bone combining surface is a trabecular structure; an active contact friction interface is formed between the humeral pad and the reverse type glenoid head, and the interface is a zirconium niobium surface oxidized metal ceramic interface. It can be seen that, by replacing the high polymer material component with the zirconium niobium metal ceramic component, the prosthesis system can reduce the bone cutting amount of the proximal humerus, increase the wear resistance of the friction interface, and manufacture a micro-texture structure on the friction interface to realize the super strong wear resistance and low wear of the friction interface, which is beneficial to the long-term stability after the prosthesis is implanted.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to a novel metal-ceramic reverse-type shoulder joint prosthesis system and its preparation method. Background Technology

[0002] Currently, with the aging society, joint diseases are increasing, and due to social progress and higher health requirements, the number of joint replacement surgeries has risen dramatically. Joint replacement is a surgical treatment method whose main purpose is to restore joint function, relieve pain, and improve the patient's quality of life. Although the surgical procedure and techniques for joint replacement surgery are now standardized in clinical practice, various complications still occur after joint replacement, leading to surgical failure and the need for revision surgery. A significant problem currently facing artificial joint replacement surgery is that the debris from the ultra-high molecular weight polyethylene (UHMWPE) components can spread to surrounding tissues, causing osteolysis and resulting in prosthesis loosening. Summary of the Invention

[0003] The purpose of this application is to provide a novel metal-ceramic reverse-type shoulder joint prosthesis system and its preparation method, which to a certain extent solves the technical problem in the prior art where the wear debris of ultra-high molecular weight polyethylene prosthesis components is scattered into the surrounding tissue, causing osteolysis and resulting in prosthesis loosening.

[0004] This application provides a novel metal-ceramic reverse shoulder joint prosthesis system, comprising: a humeral stem, a humeral support, a humeral liner, a reverse glenoid head, a taper adapter, and a glenoid support assembled sequentially; wherein the humeral support, the humeral liner, the reverse glenoid head, and the taper adapter are all formed by 3D zirconium-niobium metal printing or forging.

[0005] The humeral stem and the glenoid fossa are integrally formed using 3D-printed zirconium-niobium alloy, and the interface with the bone is a trabecular structure.

[0006] A movable contact friction interface is formed between the humeral liner and the reversible glenoid head, and the movable contact friction interface is a metal-ceramic interface with zirconium-niobium surface oxidation.

[0007] In the above technical solution, the humeral liner is further manufactured by 3D printing or solid zirconium-niobium, and each surface of the humeral liner has a metal-ceramic interface, or the mating surface of the humeral liner and the humeral support is a zirconium-niobium polished surface.

[0008] In any of the above technical solutions, the mating interfaces between adjacent parts of the humeral support, the humeral liner, and the reversible glenoid head are all cermet interfaces with zirconium-niobium surface oxidation or zirconium-niobium polished surfaces; the interior of the humeral liner has a trabecular porous structure.

[0009] In any of the above technical solutions, the active contact friction interface between the humeral liner and the reversible glenoid head has a microtexture structure on both sides or on any single side. The microtexture structure is formed on the dense solid structure surface before the zirconium-niobium alloy is oxidized, and then the zirconium-niobium alloy is oxidized into a metal-ceramic interface.

[0010] In any of the above technical solutions, the microtexture structure is further described as a micron-scale microtexture and / or nano-scale microtexture prepared by one or more of micro-milling, turning and laser processing, and the type, distribution and size of the microtexture structure can be different, so as to obtain concave or convex microstructures or multi-level scale composite structures of different shapes on the surface of zirconium-niobium alloy.

[0011] In any of the above technical solutions, the metal-ceramic interface further includes an oxide layer and an oxygen-rich diffusion layer, and the sum of their thicknesses is 3-35 micrometers.

[0012] In any of the above technical solutions, the humeral stem further comprises a cylindrical head and a stem portion connected together, the stem portion comprising a proximal end and a distal end; wherein, the outer surface of the proximal end of the stem portion is provided with trabeculae.

[0013] In any of the above technical solutions, the trabecular bone is further divided into an upper lateral region, a lower lateral region, an upper medial region, and a lower medial region; the trabeculae in the upper lateral region and the lower medial region are all of the first type of trabeculae, the trabeculae in the upper medial region are all of the second type of trabeculae, and the trabeculae in the lower lateral region are of the third type of trabeculae.

[0014] In any of the above technical solutions, further, the pore size of the first type of trabecular bone is smaller than the pore size of the second type of trabecular bone, and the porosity of the first type of trabecular bone is greater than the porosity of the second type of trabecular bone.

[0015] In any of the above technical solutions, the pore size of the first type of trabecular bone is smaller than that of the third type of trabecular bone, and the porosity of the first type of trabecular bone is greater than that of the third type of trabecular bone.

[0016] This application also provides a method for preparing a novel metal-ceramic reverse shoulder joint prosthesis system, which is used to prepare the humeral stem, humeral support, humeral liner, reverse glenoid head, tapered adapter, and glenoid support in the novel metal-ceramic reverse shoulder joint prosthesis system described in any of the above technical solutions. Therefore, it has all the beneficial technical effects of the novel metal-ceramic reverse shoulder joint prosthesis system, which will not be repeated here.

[0017] In the above technical solution, the preparation method of the novel metal-ceramic reverse-type shoulder joint prosthesis system further includes the following steps:

[0018] (1) Preparation process of humeral manubrium and glenoid fossa:

[0019] Step (1-1): Using zirconium-niobium alloy powder as raw material, with a particle diameter of 5-150 micrometers, the powder is 3D printed in one piece to obtain the first intermediate product of humeral stem with trabecular bone and zirconium-niobium alloy containing oxide layer and the first intermediate product of glenoid plexus. The two first intermediate products are placed in a hot isostatic pressing furnace, heated to 1250℃-1400℃ under inert gas protection, and kept at 140MPa-180MPa for 1h-3h. The pressure is then reduced to normal and cooled to below 200℃ with the furnace to obtain the two second intermediate products.

[0020] Steps (1-2): Place the two second intermediate products in a programmed cooling box and cool them to -80℃ to -120℃ at a rate of 1℃ / min. Keep them at a constant temperature for 5h-10h and then remove them from the programmed cooling box. Place them in liquid nitrogen for another 16h-36h and adjust the temperature to room temperature to obtain the two third intermediate products.

[0021] Steps (1-3): Place the two third intermediates in a programmed cooling box and cool them to -80℃ to -120℃ at a rate of 1℃ / min. Keep them at this temperature for 5-10 hours. Remove them from the programmed cooling box and place them in liquid nitrogen for 16-36 hours. Adjust the temperature to room temperature to obtain the two fourth intermediates.

[0022] Steps (1-4): The two fourth intermediate products are machined, polished, cleaned and dried, and then microtextured on the relative motion contact surface of the prosthesis to obtain two fifth intermediate products, or the fifth intermediate products are obtained directly without microtexturing. The surface roughness of the platform support of the two fifth intermediate products is Ra≤0.050μm.

[0023] Steps (1-5): Place the two fifth intermediate products in a tube furnace, introduce an inert gas with an oxygen mass percentage of 5%-15% at atmospheric pressure, heat to 500℃-700℃ at 5℃ / min-20℃ / min, cool to 400℃-495℃ at 0.4℃ / min-0.9℃ / min, and then allow to cool naturally to below 200℃ before removing them to obtain a humeral stem and glenoid fossa with trabecular bone and an oxide-containing zirconium-niobium alloy.

[0024] (2) Preparation process of humeral support, humeral liner, tapered adapter and reverse glenoid head:

[0025] Step (2-1): The zirconium-niobium alloy forgings are machined, trimmed, polished, cleaned, and dried to obtain intermediate products of the humeral support, humeral liner, tapered adapter, and reverse-type glenoid head. Then, microtexturing is performed on the relative motion contact surfaces of the humeral liner and the reverse-type glenoid head, or the intermediate products are obtained directly without microtexturing. The surface roughness of the outer surface of the intermediate products of the humeral support and tapered adapter is Ra≤0.080μm; the surface roughness of the inner surface of the intermediate product of the humeral liner is Ra≤0.050μm; and the surface roughness of the outer surface of the intermediate product of the reverse-type glenoid support is Ra≤0.050μm.

[0026] Step (2-2): Place the intermediate products of humeral support, humeral liner, tapered adapter and reverse glenoid head into a tube furnace, introduce atmospheric pressure helium or argon gas with an oxygen mass percentage of 5%-15%, heat to 500℃-700℃ at 5℃ / min-20℃ / min, cool to 400℃-495℃ at 0.4℃ / min-0.9℃ / min, and then allow to cool naturally to below 200℃ before removing to obtain humeral support, humeral liner, tapered adapter and reverse glenoid head.

[0027] Compared with the prior art, the beneficial effects of this application are as follows:

[0028] Compared to traditional active-reverse shoulder joint prosthesis systems, whose padding material is ultra-high molecular weight polyethylene, the zirconium-niobium alloy humeral padding in this application saves more humeral osteotomy, preserving more bone volume for patients in further revision surgery.

[0029] In addition, the zirconium-niobium alloy humeral liner can effectively prevent osteolysis caused by debris generated from the wear of ultra-high molecular weight polyethylene, thus avoiding the risk of prosthesis loosening.

[0030] In addition, the components in the new metal-ceramic reverse shoulder joint prosthesis system are made of zirconium-niobium alloy, and its friction interface is a ceramic layer with microtexture. This microtexture not only enhances the bonding force between the metal-ceramic layer and the zirconium-niobium alloy body, but also reduces friction and wear on the contact surface, making it more wear-resistant and improving the stability of the prosthesis during long-term use. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0032] Figure 1This is a schematic diagram of the structure of the novel metal-ceramic reverse-type shoulder joint prosthesis system provided in the embodiments of this application;

[0033] Figure 2 A schematic diagram of a concave hexagonal prism-shaped microtexture;

[0034] Figure 3 A schematic diagram of a concave cylindrical microtexture;

[0035] Figure 4 This is a schematic diagram of a concave, semi-cylindrical microtexture.

[0036] Figure label:

[0037] 1-Handle of humerus, 11-Handle portion, 111-Proximal end of handle portion, 1111-Superior lateral region, 1112-Inferior lateral region, 1113-Superior medial region, 1114-Inferior medial region, 112-Distal end of handle portion, 12-Cylindrical head, 2-Human support, 21-Protrusion, 3-Human liner, 31-Groove portion, 4-Reversed glenoid head, 5-Conical adapter, 6-Glenoid support, 7-Hexagonal prism-shaped pit, 8-Cylindrical pit, 9-Semi-ellipsoidal pit. Detailed Implementation

[0038] The technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this application, but not all embodiments.

[0039] The components of the embodiments of this application described and shown in the accompanying drawings can be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of this application provided in the drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application.

[0040] Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0041] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., 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 application and simplifying the description, and do not 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 application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0042] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0043] The following reference Figures 1 to 4 This application describes a novel metal-ceramic reverse-type shoulder joint prosthesis system and its preparation method according to some embodiments.

[0044] Example 1

[0045] See Figure 1 As shown, embodiments of this application provide a novel metal-ceramic reverse shoulder joint prosthesis system, comprising: a humeral stem 1, a humeral support 2, a humeral liner 3, a reverse glenoid head 4, a tapered adapter 5, and a glenoid support 6, which are assembled sequentially; wherein the humeral support 2, the humeral liner 3, the reverse glenoid head 4, and the tapered adapter 5 are all formed by 3D zirconium-niobium metal printing or forging.

[0046] The humeral stem 1 and the glenoid truss 6 are integrally molded using 3D-printed zirconium-niobium alloy, and the interface with the bone is a trabecular structure.

[0047] Both the humeral liner 3 and the reversible glenoid head 4 have active contact friction interfaces, and these active contact friction interfaces are all metal-ceramic interfaces with zirconium-niobium surface oxidation.

[0048] Based on the structure described above, it can be seen that, compared with the traditional active reverse shoulder joint prosthesis system, whose padding material is ultra-high molecular weight polyethylene, the zirconium-niobium alloy humeral pad 3 in this application saves more humeral osteotomy, preserving more bone volume for further revision surgery.

[0049] In addition, the zirconium-niobium alloy humeral liner 3 can effectively avoid the risk of osteolysis caused by debris generated from the wear of ultra-high molecular weight polyethylene, which could lead to prosthesis loosening.

[0050] In this embodiment, preferably, as follows: Figure 1 As shown, the humeral liner 3 is manufactured by 3D printing or solid zirconium-niobium. Each surface of the humeral liner 3 has a metal-ceramic interface to reduce friction and wear on the contact surface. Alternatively, the mating surface between the humeral liner 3 and the humeral support 2 is a zirconium-niobium polished surface to achieve a firm connection between the two, while the remaining surfaces are metal-ceramic interfaces.

[0051] In this embodiment, preferably, as follows: Figures 1 to 3As shown, the movable contact friction interface between the humeral liner 3 and the reversible glenoid head 4 has microtexture structure on both sides or on any single side. That is to say, the movable contact friction interface on both the humeral liner 3 and the reversible glenoid head 4 has microtexture tissue, or the movable contact friction interface on one of them has microtexture tissue.

[0052] Note that before the zirconium-niobium alloy is oxidized, a microtextured structure is formed on the dense solid structure surface, and then the zirconium-niobium alloy is oxidized to form a metal-ceramic interface.

[0053] Based on the structure described above, it can be seen that the surface of the metal-ceramic layer formed after the oxidation of the microtextured zirconium-niobium alloy still has microtexture. This microtexture not only enhances the bonding force between the metal-ceramic layer and the zirconium-niobium alloy body, but also reduces the friction and wear of the contact surface.

[0054] As can be seen, the components in the novel metal-ceramic reverse shoulder joint prosthesis system provided in this application are made of zirconium-niobium alloy, and its friction interface is a ceramic layer with microtexture. This microtexture not only enhances the bonding force between the metal-ceramic layer and the zirconium-niobium alloy body, but also reduces friction and wear on the contact surface, thus making it more wear-resistant and improving the stability of the prosthesis during long-term use. Of course, this is not the only option; the microtexture may not be provided on the moving contact friction interface between the humeral liner 3 and the reverse glenoid head 4. In addition, the aforementioned microtexture may also be provided on the humeral stem and glenoid support, or it may not be provided, depending on the actual needs.

[0055] In this embodiment, preferably, the microtexture structure is a micron-scale microtexture and / or nanoscale microtexture prepared by one or more of micromilling, turning and laser processing. The type, distribution and size of the microtexture structure can be different, so as to obtain concave or convex microstructures or multi-level scale composite structures of different shapes on the surface of zirconium-niobium alloy. The above processing methods are simple and convenient to operate, and can produce microtextures with extremely small size.

[0056] Further, preferably, such as Figure 2 As shown, the microtexture consists of multiple hexagonal prism-shaped pits 7, or as... Figure 3 As shown, the microtexture consists of multiple cylindrical pits 8, or as... Figure 4 As shown, the microtexture consists of multiple semi-ellipsoidal pits 9. Furthermore, preferably, the aforementioned multiple hexagonal prism-shaped pits 7, multiple cylindrical pits 8, and multiple semi-ellipsoidal pits 9 can all be arranged in a display pattern, such as a square array.

[0057] In this embodiment, preferably, the metal-ceramic interface includes an oxide layer and an oxygen-rich diffusion layer, and the sum of their thicknesses is 3-35 micrometers.

[0058] In this embodiment, preferably, as follows: Figure 1 As shown, the humeral stem 1 includes a cylindrical head 12 and a stem 11 connected to each other. The stem 11 includes a proximal end 111 and a distal end 112. The outer surface of the proximal end 111 is provided with trabeculae, which helps to integrate with the trabeculae in the human body and realize the connection between the implant and the original bone.

[0059] In this embodiment, preferably, as follows: Figure 1 As shown, the trabecular bone is divided into the upper lateral region 1111, the lower lateral region 1112, the upper medial region 1113, and the lower medial region 1114. The trabeculae in the upper lateral region 1111 and the lower medial region 1114 are all of the first type of trabeculae, the trabeculae in the upper medial region 1113 are all of the second type of trabeculae, and the trabeculae in the lower lateral region 1112 are of the third type of trabeculae.

[0060] Further, preferably, the pore size of the first type of trabeculae is smaller than that of the second type of trabeculae, and the porosity of the first type of trabeculae in the outer upper region 1111 and the inner lower region 1114 is greater than that of the second type of trabeculae in the inner upper region 1113.

[0061] The pore size of the first type of trabeculae is smaller than that of the third type of trabeculae. The porosity of the first type of trabeculae in the upper lateral region 1111 and the lower medial region 1114 is greater than that of the third type of trabeculae in the lower lateral region 1112.

[0062] Based on the structure described above, it can be seen that after the prosthesis system is implanted into the body, the upper lateral region 1111 and the lower medial region 1114 are areas with high stress. Therefore, the first type of trabeculae needs to be designed to be small and dense to better integrate with the original bone tissue in the human body and have a good load-bearing effect. The upper medial region 1113 and the lower lateral region 1112 are areas with low stress. Therefore, the pore diameter of the second type of trabeculae and the third type of trabeculae can be designed to be larger and the porosity to be smaller. This way, the stress requirement can be met while reducing the processing cost.

[0063] It should be noted that the aforementioned humeral stem 1, humeral support 2, humeral liner 3, reversible glenoid head 4, tapered adapter 5, and glenoid support 6 are all prosthetic structures and are not the original bone structures of the real human body.

[0064] Furthermore, preferably, the pore size and porosity of the second and third trabeculae can be the same or different, depending on actual needs.

[0065] In this embodiment, preferably, as follows: Figure 1As shown, the humeral support 2 is provided with a protrusion 21, and the humeral pad 3 is provided with a groove 31. The protrusion 21 is precisely installed in the groove 31, which makes the humeral support 2 and the humeral pad 3 more firmly assembled, and also plays a role in positioning and improving assembly accuracy.

[0066] Example 2

[0067] Embodiment 2 of this application also provides a method for preparing a novel metal-ceramic reverse shoulder joint prosthesis system, which is used to prepare the humeral stem 1, humeral support 2, humeral pad 3, reverse glenoid head 4, tapered adapter 5 and glenoid support 6 in the novel metal-ceramic reverse shoulder joint prosthesis system described in Embodiment 1 above. Therefore, it has all the beneficial technical effects of the novel metal-ceramic reverse shoulder joint prosthesis system, and the same technical features and beneficial effects will not be repeated.

[0068] In this embodiment, preferably, as follows: Figure 1 As shown, the fabrication method of the novel metal-ceramic reverse-type shoulder joint prosthesis system includes the following steps:

[0069] (1) Preparation process of humeral manubrium 1 and glenoid flexure 6:

[0070] Step (1-1): Using zirconium-niobium alloy powder as raw material, with a particle diameter of 5 micrometers, the powder is 3D printed in one piece to obtain the first intermediate product of humeral stem 1 with trabecular bone and zirconium-niobium alloy containing oxide layer and the first intermediate product of glenoid flexure 6. The two first intermediate products are placed in a hot isostatic pressing furnace, heated to 1250℃ under inert gas protection, kept at 140MPa for 1h, then cooled to normal pressure and taken out with the furnace to below 200℃ to obtain the two second intermediate products.

[0071] Steps (1-2): Place the two second intermediates in a programmed cooling box and cool them to -80°C at a rate of 1°C / min. Keep them at the same temperature for 5 hours and then remove them from the programmed cooling box. Place them in liquid nitrogen for another 16 hours and adjust the temperature to room temperature to obtain the two third intermediates.

[0072] Steps (1-3): Place the two third intermediates in a programmed cooling box and cool them to -80°C at a rate of 1°C / min. Keep them at this temperature for 5 hours. Remove them from the programmed cooling box and place them in liquid nitrogen for another 16 hours. Adjust the temperature to room temperature to obtain the two fourth intermediates.

[0073] Steps (1-4) involve machining, polishing, cleaning, and drying the two fourth intermediate products, followed by microtexturing on the relative motion contact surface of the prosthesis. The microtexture consists of multiple hexagonal prism-shaped pits arranged in an array (e.g., ...). Figure 2As shown), two fifth intermediate products were obtained, and the surface roughness of the platform support for both fifth intermediate products was Ra≤0.050μm;

[0074] Steps (1-5): Place the two fifth intermediate products in a tube furnace, introduce an atmospheric pressure inert gas with an oxygen mass percentage of 5%, heat to 500°C at 5°C / min, cool to 400°C at 0.4°C / min, and then allow to cool naturally to below 200°C to obtain the humeral stem 1 and glenoid flexure 6 of zirconium niobium alloy with trabecular bone.

[0075] (2) Preparation process of humeral support 2, humeral pad 3, tapered adapter 5 and reverse-type glenoid head:

[0076] Step (2-1): The zirconium-niobium alloy forgings are machined, trimmed, polished, cleaned, and dried to obtain intermediate products of humeral support 2, humeral liner 3, tapered adapter 5, and reverse-type glenoid head, respectively. Then, microtexturing is performed on the contact surfaces of the relative motion of the humeral liner and the reverse-type glenoid head. The roughness of the outer surface of the intermediate products of humeral support 2 and tapered adapter 5 is Ra≤0.080μm; the roughness of the inner surface of the intermediate product of humeral liner 3 is Ra≤0.050μm; and the roughness of the outer surface of the intermediate product of reverse-type glenoid support 6 is Ra≤0.050μm.

[0077] Step (2-2): Place the intermediate products of humeral support 2, humeral liner 3, tapered adapter 5 and reverse glenoid head into a tube furnace, introduce atmospheric pressure helium or argon gas with an oxygen mass percentage of 5%, heat to 500°C at 5°C / min, cool to 400°C at 0.4°C / min, and then allow to cool naturally to below 200°C to obtain humeral support 2, humeral liner 3, tapered adapter 5 and reverse glenoid head.

[0078] As can be seen from the above description, compared with the traditional active reverse shoulder joint prosthesis system, whose padding material is ultra-high molecular weight polyethylene, the zirconium niobium alloy humeral pad 3 in this application saves more humeral osteotomy, preserving more bone volume for further revision surgery.

[0079] In addition, the zirconium-niobium alloy humeral liner 3 can avoid the risk of osteolysis caused by debris generated from the wear of ultra-high molecular weight polyethylene, which could lead to prosthesis loosening.

[0080] In addition, all reverse-type shoulder joint prosthesis systems are made of zirconium-niobium alloy, and their friction interface is a ceramic layer with microtexture. This microtexture not only enhances the bonding force between the metal ceramic layer and the zirconium-niobium alloy body, but also reduces friction and wear on the contact surface, making it more wear-resistant and improving the stability of the prosthesis during long-term use.

[0081] Example 3

[0082] Embodiment 3 of this application also provides a method for preparing a novel metal-ceramic reverse shoulder joint prosthesis system, which is used to prepare the humeral stem 1, humeral support 2, humeral pad 3, reverse glenoid head 4, tapered adapter 5 and glenoid support 6 in the novel metal-ceramic reverse shoulder joint prosthesis system described in Embodiment 1 above. Therefore, it has all the beneficial technical effects of the novel metal-ceramic reverse shoulder joint prosthesis system, and the same technical features and beneficial effects will not be repeated.

[0083] In this embodiment, preferably, as follows: Figure 1 As shown, the fabrication method of the novel metal-ceramic reverse-type shoulder joint prosthesis system includes the following steps:

[0084] (1) Preparation process of humeral manubrium 1 and glenoid flexure 6:

[0085] Step (1-1): Using zirconium-niobium alloy powder as raw material, with a particle diameter of 5-150 micrometers, the powder is 3D printed in one piece to obtain the first intermediate product of humeral stem 1 with trabecular bone and zirconium-niobium alloy containing oxide layer and the first intermediate product of glenoid flexure 6. The two first intermediate products are placed in a hot isostatic pressing furnace, heated to 1400℃ under inert gas protection, kept at 180MPa for 3 hours, then cooled to normal pressure and taken out with the furnace to below 200℃ to obtain the two second intermediate products.

[0086] Steps (1-2): Place the two second intermediates in a programmed cooling box and cool them to -120°C at a rate of 1°C / min. Keep them at the same temperature for 10 hours and then remove them from the programmed cooling box. Place them in liquid nitrogen for another 36 hours and adjust the temperature to room temperature to obtain the two third intermediates.

[0087] Steps (1-3): Place the two third intermediates in a programmed cooling box and cool them to -120°C at a rate of 1°C / min. Keep them at this temperature for 10 hours. Remove them from the programmed cooling box and place them in liquid nitrogen for another 36 hours. Adjust the temperature to room temperature to obtain the two fourth intermediates.

[0088] Steps (1-4) involve machining, polishing, cleaning, and drying the two fourth intermediate products, followed by microtexturing on the relative motion contact surface of the prosthesis. The microtexture consists of multiple cylindrical pits arranged in an array (e.g., ...). Figure 3 As shown), two fifth intermediate products were obtained, and the surface roughness of the platform support for both fifth intermediate products was Ra≤0.050μm;

[0089] Steps (1-5): Place the two fifth intermediate products in a tube furnace, introduce an atmospheric pressure inert gas with an oxygen mass percentage of 15%, heat to 700°C at 20°C / min, cool to 495°C at 0.9°C / min, and then allow to cool naturally to below 200°C to obtain the humeral stem 1 and glenoid flexure 6 of zirconium niobium alloy with trabecular bone.

[0090] (2) Preparation process of humeral support 2, humeral liner 3, tapered adapter 5 and reversible glenoid head 4:

[0091] Step (2-1): The zirconium-niobium alloy forgings are machined, trimmed, polished, cleaned, and dried to obtain intermediate products of humeral support 2, humeral liner 3, tapered adapter 5, and reverse glenoid head 4. Then, microtexturing is performed on the contact surfaces of the relative motion of the humeral liner and the reverse glenoid head. The roughness of the outer surface of the intermediate products of humeral support 2 and tapered adapter 5 is Ra≤0.080μm; the roughness of the inner surface of the intermediate product of humeral liner 3 is Ra≤0.050μm; and the roughness of the outer surface of the intermediate product of reverse glenoid support 6 is Ra≤0.050μm.

[0092] Step (2-2): Place the intermediate products of humeral support 2, humeral liner 3, tapered adapter 5 and reversible glenoid head 4 into a tube furnace, introduce atmospheric pressure helium or argon gas with an oxygen mass percentage of 5%-15%, heat to 700℃ at 20℃ / min, cool to 495℃ at 0.9℃ / min, and then naturally cool to below 200℃ to obtain humeral support 2, humeral liner 3, tapered adapter 5 and reversible glenoid head 4.

[0093] As can be seen from the above description, compared with the traditional active reverse shoulder joint prosthesis system, whose padding material is ultra-high molecular weight polyethylene, the zirconium niobium alloy humeral pad 3 in this application saves more humeral osteotomy, preserving more bone volume for further revision surgery.

[0094] In addition, the zirconium-niobium alloy humeral liner 3 can avoid the risk of osteolysis caused by debris generated from the wear of ultra-high molecular weight polyethylene, which could lead to prosthesis loosening.

[0095] In addition, all reverse-type shoulder joint prosthesis systems are made of zirconium-niobium alloy, and their friction interface is a ceramic layer with microtexture. This microtexture not only enhances the bonding force between the metal ceramic layer and the zirconium-niobium alloy body, but also reduces friction and wear on the contact surface, making it more wear-resistant and improving the stability of the prosthesis during long-term use.

[0096] Example 4

[0097] Embodiment 4 of this application also provides a method for preparing a novel metal-ceramic reverse shoulder joint prosthesis system, which is used to prepare the humeral stem 1, humeral support 2, humeral pad 3, reverse glenoid head 4, tapered adapter 5 and glenoid support 6 in the novel metal-ceramic reverse shoulder joint prosthesis system described in Embodiment 1 above. Therefore, it has all the beneficial technical effects of the novel metal-ceramic reverse shoulder joint prosthesis system, and the same technical features and beneficial effects will not be repeated.

[0098] In this embodiment, preferably, as follows: Figure 1 As shown, the fabrication method of the novel metal-ceramic reverse-type shoulder joint prosthesis system includes the following steps:

[0099] (1) Preparation process of humeral manubrium 1 and glenoid flexure 6:

[0100] Step (1-1): Using zirconium-niobium alloy powder as raw material, with a particle diameter of 50 micrometers, the powder is 3D printed in one piece to obtain the first intermediate product of humeral stem 1 with trabecular bone and zirconium-niobium alloy containing oxide layer and the first intermediate product of glenoid flexure 6. The two first intermediate products are placed in a hot isostatic pressing furnace, heated to 1300℃ under inert gas protection, kept at 160MPa for 2 hours, then cooled to normal pressure and taken out with the furnace to below 200℃ to obtain the two second intermediate products.

[0101] Steps (1-2): Place the two second intermediates in a programmed cooling box and cool them to -110°C at a rate of 1°C / min. Keep them at the same temperature for 8 hours and then remove them from the programmed cooling box. Place them in liquid nitrogen for another 20 hours and adjust the temperature to room temperature to obtain the two third intermediates.

[0102] Steps (1-3): Place the two third intermediates in a programmed cooling box and cool them to -100°C at a rate of 1°C / min. Keep them at this temperature for 7 hours. Remove them from the programmed cooling box and place them in liquid nitrogen for another 25 hours. Adjust the temperature to room temperature to obtain the two fourth intermediates.

[0103] Steps (1-4): The two fourth intermediate products are machined, polished, cleaned, and dried. Microtextures are fabricated on the relative motion contact surfaces of the prosthesis, and the microtextures consist of multiple semi-ellipsoidal pits arranged in an array (e.g., Figure 4 As shown), two fifth intermediate products were obtained, and the surface roughness of the platform support for both fifth intermediate products was Ra≤0.050μm;

[0104] Steps (1-5): Place the two fifth intermediate products in a tube furnace, introduce an atmospheric pressure inert gas with an oxygen mass percentage of 5%-15%, heat to 600°C at 15°C / min, cool to 470°C at 0.6°C / min, and then allow to cool naturally to below 200°C to obtain the humeral stem 1 and glenoid flexure 6 of zirconium-niobium alloy with trabecular bone.

[0105] (2) Preparation process of humeral support 2, humeral liner 3, tapered adapter 5 and reversible glenoid head 4:

[0106] Step (2-1): The zirconium-niobium alloy forgings are machined, trimmed, polished, cleaned, and dried to obtain intermediate products of humeral support 2, humeral liner 3, tapered adapter 5, and reverse-type glenoid head 4. Note that the intermediate products are obtained directly without microtexturing at the contact surfaces of the humeral liner and the reverse-type glenoid head. The surface roughness of the outer surface of the intermediate products of humeral support 2 and tapered adapter 5 is Ra≤0.080μm; the surface roughness of the inner surface of the intermediate product of humeral liner 3 is Ra≤0.050μm; and the surface roughness of the outer surface of the intermediate product of reverse-type glenoid support 6 is Ra≤0.050μm.

[0107] Step (2-2): Place the intermediate products of humeral support 2, humeral liner 3, tapered adapter 5 and reversible glenoid head 4 into a tube furnace, introduce atmospheric pressure helium or argon gas with an oxygen mass percentage of 10%, heat to 600°C at 15°C / min, cool to 480°C at 0.79°C / min, and then allow to cool naturally to below 200°C before removing them to obtain humeral support 2, humeral liner 3, tapered adapter 5 and reversible glenoid head 4.

[0108] As can be seen from the above description, compared with the traditional active reverse shoulder joint prosthesis system, whose padding material is ultra-high molecular weight polyethylene, the zirconium niobium alloy humeral pad 3 in this application saves more humeral osteotomy, preserving more bone volume for further revision surgery.

[0109] In addition, the zirconium-niobium alloy humeral liner 3 can avoid the risk of osteolysis caused by debris generated from the wear of ultra-high molecular weight polyethylene, which could lead to prosthesis loosening.

[0110] In addition, all reverse-type shoulder joint prosthesis systems are made of zirconium-niobium alloy, and their friction interface is a ceramic layer with microtexture. This microtexture not only enhances the bonding force between the metal ceramic layer and the zirconium-niobium alloy body, but also reduces friction and wear on the contact surface, making it more wear-resistant and improving the stability of the prosthesis during long-term use.

[0111] Example 5

[0112] Embodiment 2 of this application also provides a method for preparing a novel metal-ceramic reverse shoulder joint prosthesis system, which is used to prepare the humeral stem 1, humeral support 2, humeral pad 3, reverse glenoid head 4, tapered adapter 5 and glenoid support 6 in the novel metal-ceramic reverse shoulder joint prosthesis system described in Embodiment 1 above. Therefore, it has all the beneficial technical effects of the novel metal-ceramic reverse shoulder joint prosthesis system, and the same technical features and beneficial effects will not be repeated.

[0113] In this embodiment, preferably, as follows: Figure 1 As shown, the fabrication method of the novel metal-ceramic reverse-type shoulder joint prosthesis system includes the following steps:

[0114] (1) Preparation process of humeral manubrium 1 and glenoid flexure 6:

[0115] Step (1-1): Using zirconium-niobium alloy powder as raw material, with a particle diameter of 5 micrometers, the powder is 3D printed in one piece to obtain the first intermediate product of humeral stem 1 with trabecular bone and zirconium-niobium alloy containing oxide layer and the first intermediate product of glenoid flexure 6. The two first intermediate products are placed in a hot isostatic pressing furnace, heated to 1250℃ under inert gas protection, kept at 140MPa for 1h, then cooled to normal pressure and taken out with the furnace to below 200℃ to obtain the two second intermediate products.

[0116] Steps (1-2): Place the two second intermediates in a programmed cooling box and cool them to -80°C at a rate of 1°C / min. Keep them at the same temperature for 5 hours and then remove them from the programmed cooling box. Place them in liquid nitrogen for another 16 hours and adjust the temperature to room temperature to obtain the two third intermediates.

[0117] Steps (1-3): Place the two third intermediates in a programmed cooling box and cool them to -80°C at a rate of 1°C / min. Keep them at this temperature for 5 hours. Remove them from the programmed cooling box and place them in liquid nitrogen for another 16 hours. Adjust the temperature to room temperature to obtain the two fourth intermediates.

[0118] Steps (1-4): The two fourth intermediate products are machined, polished, cleaned and dried to obtain the fifth intermediate product. The surface roughness of the platform of the two fifth intermediate products is Ra≤0.050μm.

[0119] Steps (1-5): Place the two fifth intermediate products in a tube furnace, introduce an atmospheric pressure inert gas with an oxygen mass percentage of 5%, heat to 500°C at 5°C / min, cool to 400°C at 0.4°C / min, and then allow to cool naturally to below 200°C to obtain the humeral stem 1 and glenoid flexure 6 of zirconium niobium alloy with trabecular bone.

[0120] (2) Preparation process of humeral support 2, humeral pad 3, tapered adapter 5 and reverse-type glenoid head:

[0121] Step (2-1): The zirconium-niobium alloy forgings are machined, trimmed, polished, cleaned, and dried to obtain intermediate products of humeral support 2, humeral liner 3, tapered adapter 5, and reverse-type glenoid head, respectively. Then, microtexturing is performed on the contact surfaces of the relative motion of the humeral liner and the reverse-type glenoid head. The roughness of the outer surface of the intermediate products of humeral support 2 and tapered adapter 5 is Ra≤0.080μm; the roughness of the inner surface of the intermediate product of humeral liner 3 is Ra≤0.050μm; and the roughness of the outer surface of the intermediate product of reverse-type glenoid support 6 is Ra≤0.050μm.

[0122] Step (2-2): Place the intermediate products of humeral support 2, humeral liner 3, tapered adapter 5 and reverse glenoid head into a tube furnace, introduce atmospheric pressure helium or argon gas with an oxygen mass percentage of 5%, heat to 500°C at 5°C / min, cool to 400°C at 0.4°C / min, and then allow to cool naturally to below 200°C to obtain humeral support 2, humeral liner 3, tapered adapter 5 and reverse glenoid head.

[0123] As can be seen from the above description, compared with the traditional active reverse shoulder joint prosthesis system, whose padding material is ultra-high molecular weight polyethylene, the zirconium niobium alloy humeral pad 3 in this application saves more humeral osteotomy, preserving more bone volume for further revision surgery.

[0124] In addition, the zirconium-niobium alloy humeral liner 3 can avoid the risk of osteolysis caused by debris generated from the wear of ultra-high molecular weight polyethylene, which could lead to prosthesis loosening.

[0125] In addition, all reverse-type shoulder joint prosthesis systems are made of zirconium-niobium alloy, and their friction interface is a ceramic layer with microtexture. This microtexture not only enhances the bonding force between the metal ceramic layer and the zirconium-niobium alloy body, but also reduces friction and wear on the contact surface, making it more wear-resistant and improving the stability of the prosthesis during long-term use.

[0126] Example 6

[0127] Embodiment 2 of this application also provides a method for preparing a novel metal-ceramic reverse shoulder joint prosthesis system, which is used to prepare the humeral stem 1, humeral support 2, humeral pad 3, reverse glenoid head 4, tapered adapter 5 and glenoid support 6 in the novel metal-ceramic reverse shoulder joint prosthesis system described in Embodiment 1 above. Therefore, it has all the beneficial technical effects of the novel metal-ceramic reverse shoulder joint prosthesis system, and the same technical features and beneficial effects will not be repeated.

[0128] In this embodiment, preferably, as follows: Figure 1 As shown, the fabrication method of the novel metal-ceramic reverse-type shoulder joint prosthesis system includes the following steps:

[0129] (1) Preparation process of humeral manubrium 1 and glenoid flexure 6:

[0130] Step (1-1): Using zirconium-niobium alloy powder as raw material, with a particle diameter of 5 micrometers, the powder is 3D printed in one piece to obtain the first intermediate product of humeral stem 1 with trabecular bone and zirconium-niobium alloy containing oxide layer and the first intermediate product of glenoid flexure 6. The two first intermediate products are placed in a hot isostatic pressing furnace, heated to 1250℃ under inert gas protection, kept at 140MPa for 1h, then cooled to normal pressure and taken out with the furnace to below 200℃ to obtain the two second intermediate products.

[0131] Steps (1-2): Place the two second intermediates in a programmed cooling box and cool them to -80°C at a rate of 1°C / min. Keep them at the same temperature for 5 hours and then remove them from the programmed cooling box. Place them in liquid nitrogen for another 16 hours and adjust the temperature to room temperature to obtain the two third intermediates.

[0132] Steps (1-3): Place the two third intermediates in a programmed cooling box and cool them to -80°C at a rate of 1°C / min. Keep them at this temperature for 5 hours. Remove them from the programmed cooling box and place them in liquid nitrogen for another 16 hours. Adjust the temperature to room temperature to obtain the two fourth intermediates.

[0133] Steps (1-4): The two fourth intermediate products are machined, polished, cleaned and dried to obtain the fifth intermediate product. The surface roughness of the platform of the two fifth intermediate products is Ra≤0.050μm.

[0134] Steps (1-5): Place the two fifth intermediate products in a tube furnace, introduce an atmospheric pressure inert gas with an oxygen mass percentage of 5%, heat to 500°C at 5°C / min, cool to 400°C at 0.4°C / min, and then allow to cool naturally to below 200°C to obtain the humeral stem 1 and glenoid flexure 6 of zirconium niobium alloy with trabecular bone.

[0135] (2) Preparation process of humeral support 2, humeral pad 3, tapered adapter 5 and reverse-type glenoid head:

[0136] Step (2-1): The zirconium-niobium alloy forgings are machined, trimmed, polished, cleaned, and dried to obtain intermediate products of humeral support 2, humeral liner 3, tapered adapter 5, and reverse-type glenoid head, respectively. Note that the intermediate products are obtained directly without microtexturing on the relative motion contact surfaces of the humeral liner and the reverse-type glenoid head. The surface roughness of the outer surface of the intermediate products of humeral support 2 and tapered adapter 5 is Ra≤0.080μm; the surface roughness of the inner surface of the intermediate product of humeral liner 3 is Ra≤0.050μm; and the surface roughness of the outer surface of the intermediate product of reverse-type glenoid support 6 is Ra≤0.050μm.

[0137] Step (2-2): Place the intermediate products of humeral support 2, humeral liner 3, tapered adapter 5 and reverse glenoid head into a tube furnace, introduce atmospheric pressure helium or argon gas with an oxygen mass percentage of 5%, heat to 500°C at 5°C / min, cool to 400°C at 0.4°C / min, and then allow to cool naturally to below 200°C to obtain humeral support 2, humeral liner 3, tapered adapter 5 and reverse glenoid head.

[0138] As can be seen from the above description, compared with the traditional active reverse shoulder joint prosthesis system, whose padding material is ultra-high molecular weight polyethylene, the zirconium niobium alloy humeral pad 3 in this application saves more humeral osteotomy, preserving more bone volume for further revision surgery.

[0139] In addition, the zirconium-niobium alloy humeral liner 3 can avoid the risk of osteolysis caused by debris generated from the wear of ultra-high molecular weight polyethylene, which could lead to prosthesis loosening.

[0140] In addition, all reverse-type shoulder joint prosthesis systems are made of zirconium-niobium alloy, and their friction interface is a ceramic layer with microtexture. This microtexture not only enhances the bonding force between the metal ceramic layer and the zirconium-niobium alloy body, but also reduces friction and wear on the contact surface, making it more wear-resistant and improving the stability of the prosthesis during long-term use.

[0141] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A novel metal-ceramic reverse-type shoulder joint prosthesis system, characterized in that, include: The humeral stem, humeral support, humeral liner, reversible glenoid head, tapered adapter, and glenoid support are assembled sequentially; wherein the humeral support, humeral liner, reversible glenoid head, and tapered adapter are all formed by 3D zirconium-niobium metal printing or forging. The humeral stem and the glenoid fossa are integrally formed using 3D-printed zirconium-niobium alloy, and the interface with the bone is a trabecular structure. A movable contact friction interface is formed between the humeral liner and the reversible glenoid head, and the movable contact friction interface is a metal-ceramic interface with zirconium-niobium surface oxidation. The movable contact friction interface between the humeral liner and the reversible glenoid head has a microtexture structure on both sides or on any single side. The microtexture structure is formed on the dense solid structure surface before the zirconium-niobium alloy is oxidized, and then the zirconium-niobium alloy is oxidized into a metal-ceramic interface. The microtexture structure is a micron-scale microtexture and / or nanoscale microtexture prepared by one or more of micromilling, turning and laser processing, and the type, distribution and size of the microtexture structure can be different, so as to obtain concave or convex microstructures or multi-level scale composite structures of different shapes on the surface of zirconium-niobium alloy.

2. The novel metal-ceramic reverse-type shoulder joint prosthesis system according to claim 1, characterized in that, The humeral liner is manufactured by 3D printing or solid zirconium-niobium, and each surface of the humeral liner has a metal-ceramic interface, or the mating surface between the humeral liner and the humeral support is a zirconium-niobium polished surface.

3. The novel metal-ceramic reverse-type shoulder joint prosthesis system according to claim 2, characterized in that, The mating interfaces between adjacent parts of the humeral support, the humeral liner, and the reversible glenoid head are all cermet interfaces with zirconium-niobium surface oxidation or zirconium-niobium polished surfaces; the interior of the humeral liner has a trabecular porous structure.

4. The novel metal-ceramic reverse-type shoulder joint prosthesis system according to claim 1, characterized in that, The metal-ceramic interface includes an oxide layer and an oxygen-rich diffusion layer, and the sum of their thicknesses is 3-35 micrometers.

5. The novel metal-ceramic reverse-type shoulder joint prosthesis system according to claim 1, characterized in that, The humeral stem includes a cylindrical head and a stem portion connected together, the stem portion including a proximal end and a distal end; wherein, the outer surface of the proximal end of the stem portion is provided with trabeculae.

6. The novel metal-ceramic reverse-type shoulder joint prosthesis system according to claim 5, characterized in that, The trabecular bone is divided into an upper lateral region, a lower lateral region, an upper medial region, and a lower medial region; the trabeculae in the upper lateral region and the lower medial region are all of the first type of trabeculae, the trabeculae in the upper medial region are all of the second type of trabeculae, and the trabeculae in the lower lateral region are of the third type of trabeculae.

7. The novel metal-ceramic reverse-type shoulder joint prosthesis system according to claim 6, characterized in that, The pore size of the first type of trabecular bone is smaller than that of the second type of trabecular bone, and the porosity of the first type of trabecular bone is greater than that of the second type of trabecular bone. And / or, the pore size of the first type of trabecular bone is smaller than the pore size of the third type of trabecular bone, and the porosity of the first type of trabecular bone is greater than the porosity of the third type of trabecular bone.

8. A method for preparing a novel metal-ceramic reverse-type shoulder joint prosthesis system, characterized in that, Includes the following steps: (1) Preparation process of humeral manubrium and glenoid fossa: Step (1-1): Using zirconium-niobium alloy powder as raw material, with a particle diameter of 5-150 micrometers, the powder is 3D printed in one piece to obtain the first intermediate product of humeral stem with trabecular bone and zirconium-niobium alloy containing oxide layer and the first intermediate product of glenoid plexus. The two first intermediate products are placed in a hot isostatic pressing furnace, heated to 1250℃-1400℃ under inert gas protection, and kept at 140MPa-180MPa for 1h-3h. The pressure is then reduced to normal and cooled to below 200℃ with the furnace to obtain the two second intermediate products. Steps (1-2): Place the two second intermediates in a programmed cooling box and cool them to -80℃ to -120℃ at a rate of 1℃ / min. Keep them at this temperature for 5-10 hours and then remove them from the programmed cooling box. Place them in liquid nitrogen for another 16-36 hours and adjust the temperature to room temperature to obtain the two third intermediates. Steps (1-3): Place the two third intermediates in a programmed cooling box and cool them to -80℃ to -120℃ at a rate of 1℃ / min. Keep them at this temperature for 5-10 hours. Remove them from the programmed cooling box and place them in liquid nitrogen for 16-36 hours. Adjust the temperature to room temperature to obtain the two fourth intermediates. Steps (1-4): The two fourth intermediate products are machined, polished, cleaned and dried, and then microtextured on the relative motion contact surface of the prosthesis to obtain two fifth intermediate products. The surface roughness of the platform support of the two fifth intermediate products is Ra≤0.050μm, and the size of the microtexture is in the micrometer and / or nanometer scale. Steps (1-5): Place the two fifth intermediate products in a tube furnace, introduce an inert gas with an oxygen mass percentage of 5%-15% at atmospheric pressure, heat to 500℃-700℃ at 5℃ / min-20℃ / min, cool to 400℃-495℃ at 0.4℃ / min-0.9℃ / min, and then allow to cool naturally to below 200℃ before removing them to obtain a humeral stem and glenoid fossa with trabecular bone and an oxide-containing zirconium-niobium alloy. (2) Preparation process of humeral support, humeral liner, tapered adapter and reverse glenoid head: Step (2-1): The zirconium-niobium alloy forgings are machined, trimmed, polished, cleaned, and dried to obtain intermediate products of the humeral support, humeral liner, tapered adapter, and reverse-type glenoid head. Then, microtexturing is performed on the relative motion contact surfaces of the humeral liner and the reverse-type glenoid head to obtain intermediate products. The size of the microtexture is in the micrometer and / or nanometer range. The roughness of the outer surface of the intermediate products of the humeral support and tapered adapter is Ra≤0.080μm; the roughness of the inner surface of the intermediate product of the humeral liner is Ra≤0.050μm; and the roughness of the outer surface of the intermediate product of the reverse-type glenoid support is Ra≤0.050μm. Step (2-2): Place the intermediate products of humeral support, humeral liner, tapered adapter, and reverse glenoid head into a tube furnace, introduce atmospheric pressure helium or argon gas with an oxygen mass percentage of 5%-15%, heat to 500℃-700℃ at 5℃ / min-20℃ / min, cool to 400℃-495℃ at 0.4℃ / min-0.9℃ / min, and then allow to cool naturally to below 200℃ before removing to obtain humeral support, humeral liner, tapered adapter, and reverse glenoid head.

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