Glenoid cavity base and shoulder joint prosthesis

Abstract

The invention provides a glenoid cavity base and a shoulder joint prosthesis, and the glenoid cavity base comprises a base plate which comprises a connecting surface; the connecting column is arranged on the connecting surface, and a containing groove is formed in the connecting column; and the deformation combining piece is connected with the connecting column and located at the containing groove, and the deformation combining piece deforms to have a containing state located in the containing groove and a combining state extending out of the connecting column. According to the technical scheme, the problem that the reliability of connection between the glenoid cavity base and the autogenous bone is poor in the prior art is effectively solved.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and in particular to a glenoid fossa base and a shoulder joint prosthesis. Background Art

[0002] The shoulder joint prosthesis includes a glenoid base and a glenoid head prosthesis. The glenoid base is fixed on the autologous bone and cooperates with the glenoid head prosthesis.

[0003] The glenoid base in the related art is usually fixed directly to the autologous bone by multiple screws. Although this method can provide initial stability, when the patient moves, especially under frequent movements of the shoulder joint, the screws become fatigue loose under the action of long-term mechanical cyclic loads, making the connection between the screws and the autologous bone prone to micro-motion, resulting in poor reliability of the connection between the glenoid base and the autologous bone.

[0004] Thus, the glenoid base in the related art is fixed to the autologous bone by screws, which easily leads to poor reliability of the connection between the glenoid base and the autologous bone. Summary of the invention

[0005] The main purpose of the present invention is to provide a glenoid base and a shoulder joint prosthesis to solve the problem of poor connection reliability between the glenoid base and the autologous bone in the related art.

[0006] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, a glenoid base is provided, comprising: a base plate, comprising a connecting surface; a connecting column, arranged on the connecting surface, and provided with a receiving groove; a deformable coupling member, connected to the connecting column and located at the receiving groove, the deformable coupling member is deformed to have a storage state located in the receiving groove and a coupling state extending out of the connecting column.

[0007] Furthermore, the glenoid base also includes a sleeve mounted on the outside of the connecting column, the sleeve and the connecting column can rotate relative to each other, and a avoidance hole is provided on the sleeve. The sleeve rotates to have a shielding state covering the mouth of the accommodating groove and an avoidance state connecting the avoidance hole and the accommodating groove.

[0008] Furthermore, an internal thread is provided on the inner wall of the sleeve, and an external thread that can cooperate with the internal thread is provided on the outer wall of the connecting column; and / or, the mouth of the accommodating groove passes through the side wall of the connecting column, there are multiple deformable coupling parts, and the multiple deformable coupling parts are arranged at intervals in the accommodating groove, and there are multiple avoidance holes, and the multiple avoidance holes are arranged one-to-one correspondingly to the multiple deformable coupling parts.

[0009] Furthermore, a thorn is provided on the connection surface and is angled with the connection surface. The thorn has a root and a tip. In the direction from the root to the tip, the thorn gradually moves away from the connection surface.

[0010] Furthermore, when the deformable coupling member is in a coupled state, the deformable coupling member includes a first connecting section located inside the sleeve and a second connecting section extending outside the sleeve; in the radial direction from the inside to the outside of the sleeve, the second connecting section gradually approaches the connecting surface; and / or, the length of the second connecting section is L, 0.1mm≤L≤10mm.

[0011] Furthermore, the base plate also includes a mounting surface arranged opposite to the connecting surface and a circumferential surface connected between the connecting surface and the mounting surface, and the glenoid base also includes a deformable reinforcing thorn arranged on the circumferential surface, and the deformable reinforcing thorn is deformed to have a retracted state and an inserted state; when the deformable reinforcing thorn is in the retracted state, the deformable reinforcing thorn extends along the circumference of the base plate; when the deformable reinforcing thorn is in the inserted state, the deformable reinforcing thorn extends toward the connecting column.

[0012] Furthermore, the deformation reinforcing thorn and / or the deformation connecting piece are made of memory alloy.

[0013] Furthermore, the substrate also includes a mounting surface arranged opposite to the connecting surface, a first mounting hole penetrating the connecting surface and the mounting surface is arranged on the substrate, a second mounting hole connected to the first mounting hole is arranged on the connecting column, the second mounting hole penetrates the surface of the connecting column away from the substrate, and a bottom plate is arranged at the bottom of the sleeve, and the bottom plate covers the second mounting hole.

[0014] Furthermore, a first positioning piece is provided on the sleeve, and a second positioning piece is provided on the base plate. When the first positioning piece is positioned and matched with the second positioning piece, the sleeve is in an avoidance state.

[0015] Furthermore, a thorn is provided at an angle to the connecting surface, and the thorn has a root and a tip; a positioning groove is provided on the sleeve, and a first floating bead and a second floating bead are provided on the connecting surface and are arranged at intervals along the circumference of the sleeve, and both the first floating bead and the second floating bead can be arranged in a floating manner; when the positioning groove is positioned and matched with the first floating bead, the sleeve is in an avoidance state; when the second floating bead is positioned and matched with the positioning groove, the sleeve is in a shielding state; on the connecting surface, a directed line segment from the center of the first floating bead to the center of the second floating bead is set as a first vector, and a directed line segment from the center of the root to the tip is set as a second vector; the first vector and the second vector form a vector angle X, 0°≤X≤60°; and / or, the modulus of the first vector is A, and the modulus of the second vector is B, -5mm≤AB≤5mm.

[0016] According to another aspect of the present invention, a shoulder joint prosthesis is provided, comprising a glenoid base, wherein the glenoid base is the glenoid base described above.

[0017] By applying the technical solution of the present invention, the glenoid base includes: a base plate, a connecting column and a deformable binding member. The base plate includes a connecting surface. The connecting column is arranged on the connecting surface, and a receiving groove is arranged on the connecting column. The deformable binding member is connected to the connecting column and is located at the receiving groove. The deformable binding member is deformed to have a storage state located in the receiving groove and a bonding state extending out of the connecting column. By arranging the connecting column and the deformable binding member on the connecting surface of the base plate, after the connecting column is inserted into the autologous bone, the deformable binding member can be switched to a bonding state extending out of the connecting column, so that the deformable binding member can be inserted into the autologous bone and connected and fixed to the autologous bone, thereby enhancing the biological fixation of the glenoid base and the autologous bone. Before the connecting column is inserted into the autologous bone and during the insertion of the autologous bone, the deformable binding member is in a storage state located in the receiving groove, so as to reduce the damage to the autologous bone during the insertion of the connecting column into the autologous bone. In addition, the arrangement of the connecting column facilitates the arrangement of the receiving groove and also facilitates the processing of the deformable binding member. In this way, the connection between the deformable joint and the autologous bone avoids the fatigue loosening of the screws in the related art under frequent movement, making the connection between the glenoid base and the autologous bone more stable and reliable, and improving the connection reliability between the glenoid base and the autologous bone. Therefore, the technical solution of the present application effectively solves the problem of poor connection reliability between the glenoid base and the autologous bone in the related art. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0019] Figure 1 A schematic diagram of the three-dimensional structure of an embodiment of a glenoid base according to the present invention is shown;

[0020] Figure 2 Shows Figure 1 A schematic diagram of the stereoscopic structure of the glenoid base from another perspective;

[0021] Figure 3 Shows Figure 1 A schematic diagram of the three-dimensional structure of the glenoid base without showing the sleeve;

[0022] Figure 4 Shows Figure 1 A cross-sectional schematic diagram of a glenoid base when the sleeve is in a shielding state and the deformable combination member is in a storage state;

[0023] Figure 5 Shows Figure 1 A cross-sectional schematic diagram of a glenoid base when the sleeve is in an avoidance state and the deformable coupling member is in a coupling state;

[0024] Figure 6 Shows Figure 1A schematic diagram of the three-dimensional structure of a sleeve of a glenoid base;

[0025] Figure 7 Shows Figure 1 Schematic diagram of the three-dimensional structure of the glenoid base when combined with autologous bone.

[0026] The above drawings include the following reference numerals:

[0027] 10. substrate; 11. connection surface; 12. mounting surface; 13. circumferential surface; 14. first mounting hole; 15. connection hole;

[0028] 20. Connecting column; 21. Accommodating groove; 22. Second mounting hole;

[0029] 30. Deformable joint; 31. First connecting section; 32. Second connecting section;

[0030] 40. sleeve; 41. avoidance hole;

[0031] 51. Insertion thorn; 52. Deformation reinforcement thorn; 521. Deformation section; 522. Reinforcement thorn section; 53. Bottom plate; 54. First protrusion; 541. First fixing groove; 542. Guide slope; 55. Second protrusion; 551. Second fixing groove. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0034] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0035] In this embodiment, if Figures 1 to 7 As shown, the glenoid base includes: a base plate 10, a connecting post 20 and a deformable joint member 30. The base plate 10 includes a connecting surface 11. The connecting post 20 is arranged on the connecting surface 11, and a receiving groove 21 is arranged on the connecting post 20. The deformable joint member 30 is connected to the connecting post 20 and is located at the receiving groove 21. The deformable joint member 30 is deformed to have a storage state located in the receiving groove 21 and a combined state extending out of the connecting post 20.

[0036] In this way, by arranging the connecting column 20 and the deformable combination 30 on the connecting surface 11 of the substrate 10, after the connecting column 20 is inserted into the autologous bone, the deformable combination 30 can be switched to a combination state extending out of the connecting column 20, so that the deformable combination 30 can be inserted into the autologous bone and connected and fixed with the autologous bone, thereby enhancing the biological fixation of the glenoid base and the autologous bone. Before the connecting column 20 is inserted into the autologous bone and during the insertion of the autologous bone, the deformable combination 30 is in a storage state located in the receiving groove 21, so as to reduce the damage to the autologous bone during the insertion of the connecting column 20 into the autologous bone. In addition, the arrangement of the connecting column 20 facilitates the arrangement of the receiving groove 21 and also facilitates the processing of the deformable combination 30. In this way, the connection between the deformable combination 30 and the autologous bone avoids the fatigue loosening of the screw in the related art under frequent movement, so that the connection between the glenoid base and the autologous bone is more stable and reliable, and the connection reliability between the glenoid base and the autologous bone is improved. Therefore, the technical solution of the present application effectively solves the problem of poor connection reliability between the glenoid base and the autologous bone in the related art.

[0037] like Figures 1 to 7As shown, the glenoid base also includes a sleeve 40 sleeved on the outside of the connecting column 20, and the sleeve 40 and the connecting column 20 can rotate relative to each other. The sleeve 40 is provided with an avoidance hole 41, and the sleeve 40 rotates to have a shielding state covering the mouth of the receiving groove 21 and a avoidance state connecting the avoidance hole 41 and the receiving groove 21. Before the connecting column 20 is inserted into the autologous bone and during the insertion of the autologous bone, the sleeve 40 is in a shielding state, and the deformable coupling member 30 is in a storage state. After the connecting column 20 is inserted into the autologous bone, the sleeve 40 is in an avoidance state, so that the deformable coupling member 30 can automatically switch to the combined state, and the deformable coupling member 30 extends from the avoidance hole 41 to the outside of the sleeve 40 and is inserted into the autologous bone. The relative rotation design between the sleeve 40 and the connecting column 20, as well as the coordination between the avoidance hole 41 and the receiving groove 21, allows the deformable joint 30 to be shielded during implantation, so as to further reduce the possibility of the deformable joint 30 extending out of the connecting column 20 and causing damage to the autologous bone due to processing errors or long implantation time during the implantation process, and can also protect the deformable joint 30 from external forces, thereby improving the reliability of the connection between the deformable joint 30 and the autologous bone when the deformable joint 30 is in the combined state. After implantation, the sleeve 40 can be switched to the avoidance state to release the deformable joint 30, so that the deformable joint 30 automatically extends out of the sleeve 40 and connects with the autologous bone, thereby increasing the stability and safety of bone integration.

[0038] In this embodiment, when the glenoid base is implanted into the autologous bone, the sleeve 40 is first inserted into the autologous bone along the circumferential direction of the sleeve 40, and the sleeve 40 is implanted into the autologous bone. Then the base plate 10 is rotated to drive the connecting column 20 to rotate relative to the sleeve 40, so that the sleeve 40 is in an evasive state, so that the deformable coupling member 30 can be switched to a combined state. When the sleeve 40 is in the evasive state and the deformable coupling member 30 is in the combined state, the deformable coupling member 30 extends out of the sleeve 40 to connect with the autologous bone. The connecting column 20 and the sleeve 40 are both cylindrical structures.

[0039] In this embodiment, the avoidance hole 41 passes through the side wall of the sleeve 40, and the diameter of the avoidance hole 41 gradually decreases in the radial direction from the inside to the outside of the sleeve 40, so that when the deformable coupling member 30 extends out of the avoidance hole 41, the hole wall of the avoidance hole 41 can cooperate with the guide of the deformable coupling member 30. The base plate 10 and the connecting column 20 are an integrally formed structure.

[0040] like Figures 1 to 7As shown, the inner wall of the sleeve 40 is provided with an internal thread, and the outer wall of the connecting column 20 is provided with an external thread that can be threaded with the internal thread. The threaded matching structure of the inner wall of the sleeve 40 and the outer wall of the connecting column 20 not only ensures the firm connection between the sleeve 40 and the connecting column 20, but also allows the sleeve 40 to be switched between the shielding state and the avoidance state by rotating the base plate 10 and the connecting column 20, thereby improving the flexibility of operation. The mouth of the receiving groove 21 passes through the side wall of the connecting column 20, and there are multiple deformable coupling members 30, and the multiple deformable coupling members 30 are arranged in the receiving groove 21 at intervals. There are multiple avoidance holes 41, and the multiple avoidance holes 41 are arranged one by one with the multiple deformable coupling members 30. The arrangement of multiple deformable coupling members 30 and multiple avoidance holes 41 makes the connection between the glenoid base and the autologous bone more, makes the bone integration surface more extensive, enhances the overall stability of the glenoid base, and reduces the fatigue and looseness that may be generated by a single connection point. Furthermore, a plurality of deformable coupling members 30 are arranged at intervals in the receiving groove 21 , which facilitates the arrangement of the deformable coupling members 30 and the processing of the connecting column 20 .

[0041] In this embodiment, the accommodating grooves 21 are arranged at intervals along the circumference of the connecting column 20, and a plurality of deformable coupling members 30 are arranged in each accommodating groove 21. Preferably, the accommodating grooves 21 are arranged at intervals along the circumference of the connecting column 20, and 1 to 10 deformable coupling members 30 are arranged in each accommodating groove 21.

[0042] In other embodiments, an internal thread is provided on the inner wall of the sleeve 40, and an external thread that can be matched with the internal thread is provided on the outer wall of the connecting column 20. Alternatively, the mouth of the receiving groove 21 passes through the side wall of the connecting column 20, there are multiple deformable coupling members 30, and the multiple deformable coupling members 30 are arranged in the receiving groove 21 at intervals, and there are multiple avoidance holes 41, and the multiple avoidance holes 41 are arranged one-to-one with the multiple deformable coupling members 30.

[0043] like Figures 1 to 7 As shown, the connection surface 11 is also provided with a spike 51 which is at an angle to the connection surface 11. The spike 51 has a root and a tip, and in the direction from the root to the tip, the spike 51 gradually moves away from the connection surface 11. The design of the spike 51 increases the contact area between the glenoid base and the autologous bone, and the tip of the spike 51 is gradually away from the connection surface 11, so that the spike 51 can be better inserted into the autologous bone. In this way, even in the initial fixation of the glenoid base, additional mechanical support can be provided, reducing the risk of early micro-motion, which helps to promote the bone integration of the glenoid base.

[0044] In this embodiment, the thorns 51 are arranged at intervals on the connection surface 11, and the number of thorns 51 is preferably 10 to 100. The length from the root of the thorn 51 to the tip of the thorn 51 is preferably 0.5 mm to 5 mm. The distance between the tip of the thorn 51 and the connection surface 11 is preferably 0.1 mm to 3 mm.

[0045] like Figures 1 to 7 As shown, when the deformable binding member 30 is in the combined state, the deformable binding member 30 includes a first connecting segment 31 located in the sleeve 40 and a second connecting segment 32 extending out of the sleeve 40. The arrangement of the first connecting segment 31 and the second connecting segment 32 facilitates the processing of the deformable binding member 30 and also facilitates the switching of the deformable binding member 30 between the stored state and the combined state. In the radial direction from the inside to the outside of the sleeve 40, the second connecting segment 32 gradually approaches the connecting surface 11. Such an arrangement enables the second connecting segment 32 to be better inserted into the autologous bone, and the second connecting segment 32 forms a barb structure, which improves the connection strength between the deformable binding member 30 and the autologous bone when the deformable binding member 30 is in the combined state. The length of the second connecting segment 32 is L, 0.1mm≤L≤10mm. The length of the second connecting section 32 of the deformable coupling 30 is designed within a reasonable range to ensure that it can be properly inserted into the autologous bone when extending out of the sleeve 40, and is neither too shallow to cause insufficient connection nor too deep to damage the bone, thereby finding a balance between mechanics and biocompatibility and ensuring a good bone integration effect.

[0046] In the present embodiment, the length L of the second connecting segment 32 is preferably 0.1mm, 0.5mm, 1mm, 2mm, 3mm, 5mm, 7mm, 9mm, 10mm. When the deformable coupling 30 is in the storage state, the first connecting segment 31 is a bent structure. After the glenoid base is implanted, the temperature of the deformable coupling 30 rises, causing the deformable coupling 30 to switch to the combined state, and the first connecting segment 31 is stretched and deformed, and the first connecting segment 31 is an arc-shaped structure. When the deformable coupling 30 is in the storage state and the combined state, the second connecting segment 32 is a thorn-like structure. The diameter of the second connecting segment 32 gradually decreases in the direction away from the first connecting segment 31, and the maximum diameter of the second connecting segment 32 is 0.1mm to 2.0mm. The maximum diameter of the second connecting segment 32 is the same as the diameter of the first connecting segment 31.

[0047] In other embodiments, in the radial direction from the inside to the outside of the sleeve 40, the second connecting section 32 gradually approaches the connecting surface 11. Alternatively, the length of the second connecting section 32 is L, 0.1 mm ≤ L ≤ 10 mm.

[0048] like Figures 1 to 7As shown, the base plate 10 also includes a mounting surface 12 arranged opposite to the connecting surface 11 and a circumferential surface 13 connected between the connecting surface 11 and the mounting surface 12. The glenoid base also includes a deformable reinforcing thorn 52 arranged on the circumferential surface 13. The deformable reinforcing thorn 52 is deformed to have a retracted state and an inserted state. When the deformable reinforcing thorn 52 is in the retracted state, the deformable reinforcing thorn 52 extends along the circumference of the base plate 10. When the deformable reinforcing thorn 52 is in the inserted state, it extends toward the connecting column 20. The provision of the deformable reinforcing thorn 52 further increases the contact area between the glenoid base and the autologous bone. On the circumferential surface 13 of the base plate 10, the switching between the retracted state and the inserted state of the deformable reinforcing thorn 52 improves the adaptability of the glenoid base and can provide stable fixation under different bone conditions.

[0049] In this embodiment, the deformable reinforcing thorn 52 includes a deformable section 521 and a reinforcing thorn section 522, wherein the deformable section 521 is connected between the circumferential surface 13 and the reinforcing thorn section 522. The deformable section 521 can be bent and deformed when the temperature rises, so that the reinforcing thorn section 522 can be inserted into the autologous bone to improve the connection strength between the glenoid base and the autologous bone.

[0050] In this embodiment, when the deformation reinforcement thorn 52 is in the retracted state, the deformation reinforcement thorn 52 extends radially toward the base plate 10. The deformation rate of the deformation reinforcement thorn 52 is slow, so that the deformation reinforcement thorn 52 switches from the retracted state to the inserted state only after the sleeve 40 is in the avoidance state and the thorn 51 is inserted into the autologous bone.

[0051] like Figures 1 to 7 As shown, the deformation reinforcement thorn 52 and the deformation joint 30 are made of memory alloy. The use of memory alloy not only ensures the shape recovery ability of the deformation joint 30 and the deformation reinforcement thorn 52, but also improves the quality of bone integration due to its good biocompatibility and mechanical properties, and further enhances the stability and reliability of the glenoid base. The use of memory alloy enables the deformation reinforcement thorn 52 to switch between the retracted state and the inserted state through temperature changes. The use of memory alloy enables the deformation joint 30 to switch between the stored state and the combined state through temperature changes.

[0052] In this embodiment, the deformable reinforcing thorn 52 and the deformable coupling member 30 are both integrally formed parts. The mounting surface 12 is used to mount the joint surface component or the glenoid head prosthesis. The first protrusion 54 and the second protrusion 55 are respectively arranged on the two opposite sides of the mounting surface 12. A first fixing groove 541 is arranged on the side wall of the first protrusion 54, and a second fixing groove 551 is arranged on the side wall of the second protrusion 55. The first fixing groove 541 and the second fixing groove 551 are arranged opposite to each other. A guiding inclined surface 542 is arranged on the surface of the first protrusion 54 away from the mounting surface 12, and the guiding inclined surface 542 can guide the joint surface component into the first fixing groove 541. When the joint surface component is mounted on the mounting surface 12, one side of the joint surface component is first inserted into the second fixing groove 551, and the other side of the joint surface component is guided and matched with the guiding inclined surface 542 and presses the joint surface component so that the other side of the joint surface component can enter the first fixing groove 541.

[0053] In other embodiments, the deformation reinforcing thorn 52 or the deformation coupling member 30 is made of a memory alloy.

[0054] like Figures 1 to 7 As shown, the base plate 10 also includes a mounting surface 12 arranged opposite to the connecting surface 11, and a first mounting hole 14 is arranged on the base plate 10 and passes through the connecting surface 11 and the mounting surface 12. A second mounting hole 22 connected to the first mounting hole 14 is arranged on the connecting column 20. The second mounting hole 22 passes through the surface of the connecting column 20 away from the base plate 10. A bottom plate 53 is arranged at the bottom of the sleeve 40, and the bottom plate 53 covers the second mounting hole 22. The arrangement of the first mounting hole 14 and the second mounting hole 22 facilitates the connection of the glenoid base with other prosthetic components. The arrangement of the bottom plate 53 of the sleeve 40 can cover and block the second mounting hole 22, so as to reduce the growth of autologous bone into the second mounting hole 22, which affects the connection reliability of other prosthetic components with the second mounting hole 22. In addition, the arrangement of the bottom plate 53 of the sleeve 40 can also improve the overall structural strength of the glenoid base.

[0055] In the present embodiment, the first mounting hole 14 includes a countersunk hole and a first tapered hole connected to the countersunk hole. The second mounting hole 22 includes a second tapered hole and a threaded hole. The tapered hole is connected to the threaded hole, and the threaded hole is located at the end of the tapered hole away from the base plate 10. The glenoid head prosthesis is provided with a tapered rod inserted into the first mounting hole 14 and the second mounting hole 22, and the tapered rod is taperedly matched with the first tapered hole and the second tapered hole. The glenoid head prosthesis is connected to the glenoid base by bolts, and the bolts pass through the tapered rod and match with the threaded holes, and the bolt heads are located in the countersunk holes. A porous structure layer is provided on the surface of the base plate 53 away from the connecting column 20 to facilitate bone ingrowth, thereby improving the connection reliability between the glenoid base and the autologous bone.

[0056] like Figures 1 to 7As shown, a first positioning member is provided on the sleeve 40, and a second positioning member is provided on the substrate 10. When the first positioning member and the second positioning member are positioned and matched, the sleeve 40 is in an avoidance state. The cooperation between the first positioning member and the second positioning member enables the operator to better perceive the switching of the sleeve 40 between the avoidance state and the shielding state, making the switching of the sleeve 40 more accurate, and also facilitating the sleeve 40 to be kept in the avoidance state or the shielding state, reducing uncertainty in operation, improving operation efficiency and safety, and achieving the best bone integration effect.

[0057] like Figures 1 to 7 As shown, the connection surface 11 is also provided with a thorn 51 which is at an angle to the connection surface 11, and the thorn 51 has a root and a tip. The sleeve 40 is provided with a positioning groove, and the connection surface 11 is provided with a first floating bead and a second floating bead which are arranged at intervals along the circumference of the sleeve 40, and both the first floating bead and the second floating bead can be arranged in a floating manner. When the positioning groove is positioned and matched with the first floating bead, the sleeve 40 is in an avoidance state. When the second floating bead is positioned and matched with the positioning groove, the sleeve 40 is in a shielding state. On the connection surface 11, the directed line segment from the center of the first floating bead to the center of the second floating bead is set as the first vector, and the directed line segment from the center of the root to the tip is set as the second vector. The first vector and the second vector form a vector angle X, 0°≤X≤60°. The modulus of the first vector is A, and the modulus of the second vector is B, -5mm≤AB≤5mm. The coordinated use of the thorn 51, the sleeve 40, the positioning groove, the first floating bead and the second floating bead optimizes the position control of the sleeve 40 by adjusting the angle and modulus of the first vector and the second vector, thereby ensuring the accuracy and reliability of the deformable joint 30 during implantation. By controlling the vector angle X formed by the first vector and the second vector, when the sleeve 40 switches from the shielding state to the avoidance state, the thorn 51 can penetrate into the autologous bone to complete the combination of the thorn 51 and the autologous bone. By controlling the difference between the modulus of the first vector and the modulus of the second vector, when the sleeve 40 switches from the shielding state to the avoidance state, the length of the thorn 51 penetrating into the autologous bone can be controlled, thereby ensuring that the thorn 51 can be properly penetrated into the autologous bone, neither too shallow to cause insufficient connection nor too deep to damage the bone, thereby finding a balance between mechanics and biocompatibility, and ensuring a good bone integration effect.

[0058] In this embodiment, in the direction from the root to the tip, the thorn 51 gradually moves away from the connection surface 11. When the sleeve 40 is tightened on the connection column 20, the positioning groove and the first floating bead are positioned and matched.

[0059] In other embodiments, the first vector and the second vector form a vector angle X, 0°≤X≤60°. Alternatively, the magnitude of the first vector is A, the magnitude of the second vector is B, -5mm≤AB≤5mm.

[0060] The present application also provides a shoulder joint prosthesis, which includes a glenoid base, and the glenoid base is the glenoid base described above. Since the glenoid base described above can solve the problem of poor connection reliability between the glenoid base and autologous bone in the related art, the shoulder joint prosthesis having the glenoid base can solve the same technical problem.

[0061] In this embodiment, a connection hole 15 is provided on the base plate 10, and the connection hole 15 includes an avoidance section and a locking section. The fixing nail passes through the avoidance section to connect the base plate 10 to the autologous bone, and the nail head of the fixing nail is located in the avoidance section. The anti-retraction nail is fixed in the locking section, and an inner screw is provided on the inner wall of the locking section to reduce the possibility of fatigue loosening of the fixing nail.

[0062] In this embodiment, the glenoid pedestal can be used in a reverse shoulder prosthesis and an anatomical shoulder prosthesis. When the shoulder prosthesis is a reverse shoulder prosthesis, the shoulder prosthesis further comprises a glenoid head prosthesis, which is connected to the glenoid pedestal. When the shoulder prosthesis is an anatomical shoulder prosthesis, the shoulder prosthesis further comprises an articular surface component, which is arranged on the mounting surface 12.

[0063] The inventors found that complex injuries such as proximal humeral comminuted fractures, advanced shoulder arthritis, humeral head necrosis, and rotator cuff arthritis are very common shoulder diseases in clinical practice. The shoulder pain and limited activity caused by these diseases have adverse effects on the patient's life. At present, shoulder replacement is an effective treatment method in clinical practice, which greatly improves the function of the shoulder joint and relieves the pain of patients. Although shoulder replacement treats complex shoulders, the clinical efficacy of joint diseases is good. Complications after shoulder replacement, such as prosthesis loosening, joint instability, and periprosthetic fractures, are still the main problems faced by shoulder replacement. Among them, prosthesis loosening is the most common complication after shoulder replacement, which directly affects the success or failure of the operation and the retention time of the shoulder prosthesis in the body. It is generally believed that nearly 30% of shoulder revision cases are caused by loosening of the glenoid prosthesis. The loosening of the glenoid prosthesis in the shoulder prosthesis system accounts for the vast majority, and the loosening rate is higher than that of the humeral side prosthesis. The main reason for the loosening of the joint prosthesis is that the load borne by the prosthesis fixation interface exceeds the bonding strength of the interface.

[0064] By applying the technical solution of this embodiment, the glenoid base can effectively strengthen the bonding strength of the glenoid prosthesis fixing interface, thereby reducing the incidence of loosening of the glenoid prosthesis.

[0065] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0066] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0067] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0068] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A glenoid base, characterized in that: include: A substrate (10) comprising a connection surface (11); A connecting column (20) is arranged on the connecting surface (11), and a receiving groove (21) is arranged on the connecting column (20); A deformable coupling member (30) is connected to the connecting column (20) and is located at the receiving groove (21); the deformable coupling member (30) is deformed to have a storage state in which it is located in the receiving groove (21) and a coupling state in which it extends out of the connecting column (20).

2. The glenoid base according to claim 1, characterized in that: The glenoid fossa base further comprises a sleeve (40) sleeved on the outer side of the connecting column (20), the sleeve (40) and the connecting column (20) being rotatable relative to each other, a avoidance hole (41) being provided on the sleeve (40), and the sleeve (40) being rotatable to have a shielding state covering the mouth of the accommodating groove (21) and an avoidance state connecting the avoidance hole (41) and the accommodating groove (21).

3. The glenoid base according to claim 2, characterized in that: An internal thread is provided on the inner wall of the sleeve (40), and an external thread capable of mating with the internal thread is provided on the outer wall of the connecting column (20); and / or, The mouth of the accommodating groove (21) passes through the side wall of the connecting column (20); there are a plurality of deformable coupling members (30), and the plurality of deformable coupling members (30) are arranged at intervals in the accommodating groove (21); there are a plurality of avoidance holes (41), and the plurality of avoidance holes (41) are arranged in a one-to-one correspondence with the plurality of deformable coupling members (30).

4. The glenoid base according to claim 1, wherein: The connecting surface (11) is also provided with a thorn (51) which is at an angle to the connecting surface (11), the thorn (51) having a root and a tip, and in a direction from the root to the tip, the thorn (51) gradually moves away from the connecting surface (11).

5. The glenoid base according to claim 2, characterized in that: When the deformable combination member (30) is in the combined state, the deformable combination member (30) comprises a first connection section (31) located inside the sleeve (40) and a second connection section (32) extending outside the sleeve (40); In the radial direction from the inside to the outside of the sleeve (40), the second connecting section (32) gradually approaches the connecting surface (11); and / or, The length of the second connecting section (32) is L, 0.1 mm ≤ L ≤ 10 mm.

6. The glenoid base according to claim 1, wherein: The base plate (10) further comprises a mounting surface (12) arranged opposite to the connecting surface (11) and a circumferential surface (13) connected between the connecting surface (11) and the mounting surface (12); the glenoid base further comprises a deformable reinforcing thorn (52) arranged on the circumferential surface (13); the deformable reinforcing thorn (52) is deformed to have a retracted state and an inserted state; when the deformable reinforcing thorn (52) is in the retracted state, the deformable reinforcing thorn (52) extends along the circumference of the base plate (10); When the deformable reinforcing thorn (52) is in the inserted state, the deformable reinforcing thorn (52) extends towards the connecting column (20).

7. The glenoid base according to claim 6, characterized in that: The deformation reinforcing thorn (52) and / or the deformation combining piece (30) are made of memory alloy.

8. The glenoid base according to claim 2, wherein: The substrate (10) further comprises a mounting surface (12) arranged opposite to the connecting surface (11); a first mounting hole (14) penetrating the connecting surface (11) and the mounting surface (12) is arranged on the substrate (10); a second mounting hole (22) communicating with the first mounting hole (14) is arranged on the connecting column (20); the second mounting hole (22) penetrates a surface of the connecting column (20) facing away from the substrate (10); a bottom plate (53) is arranged at the bottom of the sleeve (40); the bottom plate (53) covers the second mounting hole (22).

9. The glenoid base according to claim 2, wherein: The sleeve (40) is provided with a first positioning member, and the base plate (10) is provided with a second positioning member, and when the first positioning member and the second positioning member are positioned and matched, the sleeve (40) is in the avoidance state.

10. The glenoid base according to claim 2, wherein: The connecting surface (11) is also provided with a thorn (51) which is angled with the connecting surface (11), and the thorn (51) has a root and a tip; the sleeve (40) is provided with a positioning groove, and the connecting surface (11) is provided with a first floating bead and a second floating bead which are arranged at intervals along the circumference of the sleeve (40), and the first floating bead and the second floating bead can be arranged in a floating manner; when the positioning groove is positioned and matched with the first floating bead, the sleeve (40) is in the avoiding state; when the second floating bead is positioned and matched with the positioning groove, the sleeve (40) is in the shielding state; On the connection surface (11), a directed line segment pointing from the center of the first floating bead to the center of the second floating bead is set as a first vector, and a directed line segment pointing from the center of the root to the tip is set as a second vector; The first vector and the second vector form a vector angle X, 0°≤X≤60°; and / or, The magnitude of the first vector is A, the magnitude of the second vector is B, and -5mm≤AB≤5mm.

11. A shoulder joint prosthesis, comprising a glenoid base, characterized in that: The glenoid base is the glenoid base according to any one of claims 1 to 10.

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