Shoulder joint prosthesis assembly

Abstract

The utility model relates to the technical field of medical instruments, in particular to a shoulder joint prosthesis assembly which comprises a patch and a connecting piece, the patch is provided with a matching surface coplanar with a glenoid surface of a shoulder blade, and the matching surface is used for being in contact fit with a humerus head; the connecting piece is used for installing the patch on the shoulder blade. The patch is connected to the scapula and provided with a matching face coplanar with the glenoid face of the scapula, and the matching face is in contact fit with the humerus head. The connecting piece is connected with the patch and the shoulder blade and connected to one side of the matching face. Thus, when the glenoid surface is damaged slightly, the patch is connected to the scapula, and the matching surface can be coplanar with the glenoid surface and can be in contact fit with the humerus head. And the matching surface can be used for filling the damaged glenoid surface, so that the humerus head and the shoulder blade can be rotationally matched. Moreover, the patch is arranged, so that the problem that the glenoid surface on the scapula needs to be completely cut off in the related technology is solved, the cutting difficulty and the operation difficulty are reduced, the joint stability is improved, the postoperative recovery time is shortened, and the risk of postoperative dislocation is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a shoulder joint prosthesis component. Background Art

[0002] The shoulder joint is a ball and socket joint. The ball part is composed of the spherical humeral head at the proximal end of the humerus, and the socket part is composed of the concave glenoid cavity of the scapula. The humeral head (ball) contacts and fits with the glenoid surface (socket) of the scapula, allowing the humeral head to rotate within the glenoid surface of the scapula.

[0003] When the glenoid surface on the scapula is damaged, it is usually necessary to completely remove the glenoid surface, and then connect the glenoid prosthesis such as those in CN201010592145.7 and CN202010239661.5 to the resected scapula, so that the humeral head contacts and fits with the shoulder joint prosthesis and is rotatably arranged in the shoulder joint prosthesis.

[0004] For conditions with minor damage to the glenoid surface, if the entire glenoid surface is removed, it means that the original undamaged or slightly damaged native tissue is also removed, which increases the difficulty of surgical resection and operation, and also increases the surgical trauma and recovery time. Utility Model Content

[0005] In order to solve the problems in the prior art of increasing the difficulty of surgical resection, operation difficulty, surgical trauma and surgical recovery time caused by removing the entire glenoid surface under conditions where the damage to the glenoid surface is relatively minor, the utility model provides a shoulder joint prosthesis assembly, which can avoid the complete removal of the glenoid surface under the above conditions, reduce the difficulty of surgical resection and operation difficulty, and help to shorten the surgical recovery time.

[0006] To achieve the above objectives, the following technical solutions are provided:

[0007] A shoulder joint prosthesis assembly comprises a patch and a connector. The patch has a matching surface coplanar with the glenoid surface of the scapula, and the matching surface is used for contacting and matching with the humeral head. The connector is used for installing the patch on the scapula.

[0008] Furthermore, the connector is passed through the patch, one end of which is used to connect with the scapula; the other end protrudes outward from the patch, is located on one side of the mating surface, and is mated with the humeral head stop.

[0009] Furthermore, the patch includes a fitting surface and a penetration surface that are relatively arranged, the fitting surface is used to fit with the scapula, and the mating surface is located between the fitting surface and the penetration surface; the connecting part includes a locking screw, the locking screw includes a locking screw and a locking head, the locking screw is used to pass through the patch and connect with the scapula, and the locking head is threadedly connected to the patch.

[0010] Furthermore, the patch block is provided with a connected avoidance hole and a matching hole, the aperture of the matching hole is larger than the aperture of the avoidance hole, the avoidance hole is located on the side of the matching hole facing the scapula, the avoidance hole is used to avoid the locking screw, and a threaded portion that cooperates with the locking head is provided in the matching hole.

[0011] Furthermore, the locking screw is provided with a first thread segment for extending into the shoulder blade, and the locking head is provided with a second thread segment, and the thread lead of the second thread segment is greater than the thread lead of the first thread segment.

[0012] Further, a difference between the thread lead of the second thread segment and the thread lead of the first thread segment is in the range of 0.1 mm to 0.5 mm.

[0013] Furthermore, the connector also includes a fastening screw on the same side as the locking screw, one end of the fastening screw passes through the patch for connection to the scapula, and the other end is connected to the patch; the axis of the locking screw is set at an angle to the axis of the fastening screw.

[0014] Furthermore, the locking screw is provided with a first channel communicating with the outside of the locking screw and the inside of the humeral head, and / or the fastening screw is provided with a second channel communicating with the outside of the fastening screw and the inside of the humeral head.

[0015] Furthermore, a first wire passing hole is provided on the locking screw, and / or a second wire passing hole is provided on the fastening screw.

[0016] Furthermore, the patch includes a patch body and an inserting block, the inserting block is fixedly connected to the patch body, and the mating surface is provided on the inserting block.

[0017] Furthermore, a slot is provided on the patch body, and the insert block is inserted into the slot and interference fits with the slot.

[0018] The beneficial effects of the present invention are as follows: the patch is connected to the scapula, and the patch has a mating surface that is coplanar with the glenoid surface of the scapula, and the mating surface is in contact with and fits with the humeral head. A connector connects the patch to the scapula, and the connector is connected to one side of the mating surface. In this way, when the damage to the glenoid surface is relatively small, the patch is connected to the scapula, and the mating surface can be coplanar with the glenoid surface and in contact with and fit with the humeral head. The mating surface can fill the damaged glenoid surface to facilitate the rotational fit between the humeral head and the scapula. In addition, the provision of the patch avoids the problem in the related art of requiring the complete removal of the glenoid surface on the scapula, reduces the difficulty of removal and operation, helps to improve joint stability, shorten postoperative recovery time, and reduce the risk of postoperative dislocation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the three-dimensional structure of an embodiment of the present invention showing the shoulder joint prosthesis assembly and the humeral head in cooperation;

[0020] Figure 2 Shown Figure 1 Schematic diagram of the three-dimensional structure of the shoulder joint prosthesis component when installed on the scapula;

[0021] Figure 3 Shown Figure 2 A schematic diagram of the three-dimensional structure of a shoulder joint prosthesis component from a first perspective;

[0022] Figure 4 Shown Figure 2 A schematic diagram of the three-dimensional structure of a shoulder joint prosthesis component from a second perspective;

[0023] Figure 5 Shown Figure 2 A schematic diagram of the three-dimensional structure of the shoulder joint prosthesis component when viewed from a second perspective;

[0024] Figure 6 Shown Figure 1 A schematic front view of a locking screw of a shoulder prosthesis component;

[0025] Figure 7 Shown Figure 1 Schematic front view of the fastening screws of the shoulder joint prosthesis component.

[0026] Figure 8 A schematic cross-sectional view showing a fastening screw of a shoulder joint prosthesis component;

[0027] Figure 9 A partial enlarged schematic diagram of a locking screw of a shoulder joint prosthesis component is shown;

[0028] The above drawings include the following reference numerals:

[0029] 10. patch; 11. patch body; 111. fitting surface; 112. insertion surface; 12. inserting block; 121. mating surface;

[0030] 20. Locking screw; 21. Locking screw; 211. First threaded segment; 22. Locking head; 221. Second threaded segment; 23. First thread hole; 24. First central through hole; 25. First connecting hole;

[0031] 30. Fastening screw; 31. Second wire hole; 32. Second central through hole;

[0032] 40. Scapula; 41. Glenoid surface;

[0033] 50. Humeral head. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0035] like Figure 1 、 Figure 2 、 Figure 3 As shown, a shoulder joint prosthesis assembly includes a patch 10 and a connector. The patch 10 has a mating surface 121 coplanar with the glenoid surface 41 of the scapula 40. The mating surface 121 is configured to contact and mate with the humeral head 50. The connector is configured to mount the patch 10 on the scapula 40. The connector is connected to one side of the mating surface 121.

[0036] In this way, when the patient's glenoid surface 41 is less damaged, the patch 10 is connected to the scapula 40, and the mating surface 121 can be coplanar with the glenoid surface 41 and contact and mate with the humeral head 50. The mating surface 121 can fill the damaged glenoid surface 41 to facilitate the rotational fit between the humeral head 50 and the scapula 40. In addition, the provision of the patch 10 avoids the need to completely remove the glenoid surface 41 on the scapula 40 in the related art, reducing the difficulty of removal and operation. Therefore, the technical solution of this embodiment effectively solves the problem in the related art that when the damage to the glenoid surface 41 is less, the glenoid surface on the scapula needs to be completely removed, avoiding the removal of native tissue that was originally undamaged or lightly damaged, reducing the difficulty of removal and operation, and the installation operation of the shoulder joint prosthesis is relatively simple.

[0037] The provision of the connector facilitates attachment of the patch 10 to the scapula 40. Positioning the connector on one side of the mating surface 121 effectively avoids the mating surface 121, reducing the likelihood of interference between the connector and the mating surface 121, increasing the contact area between the mating surface 121 and the humeral head 50, and improving the reliability of the mating between the mating surface 121 and the humeral head 50. This avoids the need for a mounting hole for a screw on the mating surface 121, as is commonly done in related art, and reduces the likelihood of the edge of the mounting hole contacting the humeral head 50 and causing wear on the humeral head 50.

[0038] like Figure 2 As shown, the patch 10 has a mating surface 121 that is coplanar with the glenoid surface 41 of the scapula 40, where coplanarity refers to the glenoid surface 41 being a hyperbolic surface. In this embodiment, the mating surface 121 is also a hyperbolic surface, and the mating surface 121 and the glenoid surface 41 have the same fitting height, and the curved surfaces of the mating surface and the glenoid surface are smoothly transitioned according to the physiological structural characteristics of the rotational cooperation between the humeral head and the glenoid surface. The mating surface 121 can contact and cooperate with the humeral head, thereby ensuring that the humeral head is in contact and cooperate with the glenoid surface of the scapula and the mating surface 121, so that the humeral head 50 can rotate within the glenoid surface 41 of the scapula and the mating surface 121.

[0039] The shape and curve of the mating surface 121 on the patch 10 can be constructed through three-dimensional scanning based on the glenoid surface 41 removed from the patient, and can be produced through casting, 3D printing, etc., so that the mating surface 121 has a better fit with the remaining part of the glenoid surface.

[0040] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 As shown, the connecting piece is passed through the patch 10, and the first end of the connecting piece is used to connect to the scapula 40; the second end protrudes outward from the patch 10, and the part protruding from the patch 10 serves to stop and limit the patch after the patch 10 is installed on the scapula 40.

[0041] The first and second ends correspond to the two ends of the connector, and the portion of the protruding patch 10 is located on one side of the mating surface 121 and engages with the humeral head 50. In this way, when the humeral head 50 rotates within the glenoid surface 41 and the mating surface 121, the second end of the connector can limit the rotation of the humeral head 50 on one side of the mating surface 121, reducing the possibility of the humeral head 50 dislodging from the mating surface 121 and the glenoid surface 41 (this is a limiting relationship between a natural human shoulder joint, and the purpose of the connector as a prosthesis is to limit excessive lateral sliding of the humeral head).

[0042] Furthermore, when the damage to the glenoid surface 41 is relatively minor, it is necessary to perform a local resection on the edge of the scapula 40, which reduces the reliability of the connection between the muscles and ligaments near the resected scapula 40 and the humeral head 50. By setting the second end of the connector, the movement of the humeral head 50 on the side of the resected scapula 40 can be limited, that is, the movement of the humeral head 50 on the side of the patch 10 can be limited, thereby reducing the possibility of the humeral head 50 coming out of the side of the mating surface 121. At the same time, for different sliding situations of the humeral head 50, the operator can adaptively select connectors of different diameters and lengths, and select a patch 10 with a suitable spacing that matches the patient during installation, so that the distance by which the second end of the connector protrudes from the patch 10 is adjustable, thereby ensuring that the tendency of the humeral head 50 to come out is limited.

[0043] In this embodiment, the second ends of the connectors are all highly polished, and the edges of the second ends of the connectors are all arc-shaped surfaces, so that the second ends of the connectors form a smooth surface with a low stimulation effect.

[0044] like Figure 3 、 Figure 4 As shown, the patch 10 includes a patch body 11 and an inserting block 12 . The inserting block 12 is fixedly connected to the patch body 11 , and a mating surface 121 is provided on the inserting block 12 .

[0045] The patch body 11 is selectively connected to a plurality of inserts 12, which are connected to the scapula 40, and the mating surface 121 is provided on the insert 12. Thus, the operator can select the appropriate insert 12 to connect to the patch body 11 according to the condition of the glenoid surface 41, so that the mating surface 121 and the glenoid surface 41 can be more adapted, and the humeral head 50 can rotate more smoothly within the mating surface 121 and the glenoid surface 41.

[0046] In this embodiment, the patch body 11 is first fixed to the scapula 40. Due to differences in bone density and other factors in the scapula 40 of different patients, the actual position of the patch body 11 on the scapula 40 may differ from the preset position. In this case, an appropriate insert 12 can be selected based on the actual position of the patch body 11 so that the mating surface 121 is coplanar with the glenoid surface 41, allowing smoother rotation of the humeral head 50 on the mating surface 121 and the glenoid surface 41.

[0047] In this embodiment, the patch body 11 is made of metal. The insert 12 is made of a polymer material, such as polyethylene and polyetheretherketone. By manufacturing multiple inserts 12 of varying thickness, with the thickness of each insert 12 set in a gradient of 0.5 mm, and the thickness range of the insert 12 being between 5 mm and 15 mm, the operator can promptly select the appropriate insert 12 for implantation, thereby improving the joint motion performance of the shoulder joint and achieving a more appropriate joint gap. The edge of the insert 12 is provided with a spherical surface, the radius of which ranges from 20 mm to 50 mm, with the radius of the spherical surface on different inserts 12 being set in a gradient of 1 mm.

[0048] Specifically, a slot is provided on the patch body 11, and the insert 12 is inserted into the slot and has an interference fit with the slot. The structure of the slot and the insert 12 is simple, which facilitates the installation operation of the insert 12 on the patch body 11. In addition, the slot and the insert 12 have an interference fit, so that the connection between the insert 12 and the patch body 11 is more reliable. In this embodiment, the slot is a dovetail slot. The slot includes a bottom wall and two slot side walls connected to opposite sides of the bottom wall, and the distance between the two slot side walls gradually increases from closer to the slot opening to farther away from the slot opening. The opposite sides of the insert 12 cooperate with the slot (this cooperation structure is not shown in the figure).

[0049] like Figure 4 As shown, the patch 10 includes a fitting surface 111 and a penetration surface 112 that are relatively arranged. The fitting surface 111 is used to fit with the scapula 40, and the matching surface 121 is located between the fitting surface 111 and the penetration surface 112; the connecting part includes a locking screw 20, and the locking screw 20 includes a locking screw 21 and a locking head 22. The locking screw 21 is used to penetrate the patch 10 and connect with the scapula 40, and the locking head 22 is threadedly connected to the patch 10.

[0050] In this way, the locking screw 20 can be located on one side of the mating surface 121, effectively avoiding the mating surface 121, reducing the possibility of interference between the locking screw 20 and the mating surface 121, increasing the contact area between the mating surface 121 and the humeral head 50, and improving the reliability of the mating between the mating surface 121 and the humeral head 50. The related art of providing a mounting hole for the mounting screw on the mating surface 121 is avoided, reducing the possibility of the edge of the mounting hole contacting the humeral head 50 and causing wear on the humeral head 50. Furthermore, the structure of the locking screw 20 is simple, and the connection between the locking screw 21 and the scapula 40 and the connection between the locking head 22 and the patch 10 make the connection between the scapula 40 and the patch 10 more solid and reliable.

[0051] like Figure 5 As shown, the patch 10 is provided with a connected avoidance hole and a matching hole, the aperture of the matching hole is larger than the aperture of the avoidance hole, the avoidance hole is located on the side of the matching hole facing the scapula 40, the avoidance hole is used to avoid the locking screw 21, and a threaded portion that cooperates with the locking head 22 is provided in the matching hole.

[0052] The provision of the avoidance hole and the mating hole allows the locking head 22 to apply a force to the patch 10 toward the scapula 40, thereby more reliably securing the patch 10 to the scapula 40. Furthermore, the provision of the threaded portion within the mating hole further secures the connection between the locking head 22 and the patch 10. The provision of the avoidance hole allows the locking screw 21 to pass through the patch 10 and into the scapula 40.

[0053] like Figure 5As shown, the locking screw 21 is provided with a first threaded segment 211 for inserting into the scapula 40. The locking head 22 is provided with a second threaded segment 221. The thread lead of the second threaded segment 221 is greater than the thread lead of the first threaded segment 211. Because the thread lead of the second threaded segment 221 differs from the thread lead of the first threaded segment 211, the locking screw 20 can achieve different tightening effects during insertion. As the locking screw 20 is rotated to begin insertion into the scapula 40, threads are tapped into the scapula 40 surrounding the locking screw 21 to mate with the threads of the first threaded segment 211. When the locking screw 20 is rotated to threadably engage the locking head 22 with the mating hole in the patch 10, because the thread lead of the second thread segment 221 is greater than the thread lead of the first thread segment 211, the distance traveled by the locking screw 20 during one rotation of the locking screw 20 is equal to the axial movement of the locking head 22. This movement of the locking screw 20 is greater than the thread lead of the second thread segment 221. This allows the locking head 22 to apply pressure to the locking screw 21, allowing the locking screw 21 to be inserted deeper into the scapula 40, thereby improving the tightening effect of the locking screw 21 on the surrounding scapula 40. Furthermore, the difference between the thread lead of the second thread segment 221 and the thread lead of the first thread segment 211 ensures that the scapula 40 and the patch 10 are always tightly secured before the locking screw 20 and the patch 10 are tightly secured during the tightening process.

[0054] Specifically, the difference between the thread lead of the second thread segment 221 and the thread lead of the first thread segment 211 is in the range of 0.1 mm to 0.5 mm.

[0055] The setting here enables the locking head 22 to apply pressure to the locking screw 21 so that the locking screw 21 can be inserted deeper into the scapula 40, thereby improving the fastening effect when the locking screw 21 is connected to the surrounding scapula 40, while reducing the possibility of the locking screw 21 being inserted too quickly and causing the scapula 40 to break.

[0056] It should be noted that thread lead refers to the axial distance traveled by any point on a thread during one revolution along the same helical line. In this embodiment, the thread lead of the second thread segment 221 is in the range of 1.5 mm to 2 mm, and the thread lead of the first thread segment 211 is in the range of 1.15 mm to 1.5 mm. The first and second thread segments 211, 221 have the same direction of rotation.

[0057] like Figure 1 、 Figure 3 、 Figure 4 、 Figure 5As shown, the connector also includes a fastening screw 30 on the same side as the locking screw 20. One end of the fastening screw 30 extends through the patch 10 for connection to the scapula 40, and the other end is connected to the patch 10. The axis of the locking screw 20 is arranged at an angle to the axis of the fastening screw 30. That is, the axis of the locking screw 20 and the axis of the fastening screw 30 are not parallel. This angled arrangement of the axis of the locking screw 20 and the axis of the fastening screw 30 improves the connection strength of the connector when subjected to forces acting in different directions, thereby achieving a cross-fixation between the connector, the patch 10, and the scapula 40.

[0058] In this embodiment, the axis of the locking screw 20 and the axis of the fastening screw 30 are arranged at an angle in the sagittal plane, and the angle between the axis of the locking screw 20 and the axis of the fastening screw 30 in the sagittal plane is in the range of 5° to 15°. Preferably, the angle between the axis of the locking screw 20 and the axis of the fastening screw 30 in the sagittal plane is 5°, 10°, or 15°.

[0059] In this embodiment, the axis of the locking screw 20 and the axis of the fastening screw 30 are arranged at an angle in the horizontal plane, and the angle between the axis of the locking screw 20 and the axis of the fastening screw 30 in the horizontal plane is in the range of 5° to 15°. Preferably, the angle between the axis of the locking screw 20 and the axis of the fastening screw 30 in the horizontal plane is 5°, 10°, or 15°.

[0060] In this embodiment, both locking screw 20 and set screw 30 are manufactured from cobalt-chromium-molybdenum, a titanium alloy with a ceramic coating, or other biocompatible and wear-resistant single metal or composite material. The first ends of both locking screw 20 and set screw 30 feature self-tapping cutting edges, and the threaded surfaces are spray-coated with titanium and hydroxyapatite. This ensures improved screw-in performance, while the roughened coating ensures continued ingrowth and adhesion to the bone structure, resulting in improved long-term stability.

[0061] In this embodiment, a countersunk hole is provided on the patch 10 , which passes through the fitting surface 111 and the penetration surface 112 . The fastening screw 30 extends into the countersunk hole to be connected to the scapula 40 .

[0062] The locking screw 20 is provided with a first channel connecting the exterior of the locking screw 20 with the interior of the humeral head 50, and the fastening screw 30 is provided with a second channel connecting the exterior of the fastening screw 30 with the interior of the humeral head 50. The provision of the first channel enables an operator to deliver adhesive from the exterior of the locking screw 20 into the interior of the humeral head 50, thereby securely connecting the locking screw 20 and the humeral head 50 with the adhesive. The provision of the second channel enables an operator to deliver adhesive from the exterior of the fastening screw 30 into the interior of the humeral head 50, thereby securely connecting the fastening screw 30 and the humeral head 50 with the adhesive.

[0063] In this embodiment, the adhesive is ultra-low viscosity bone cement. When the bone of the humeral head 50 is relatively porous, the locking screw 20 and the humeral head 50 or the fastening screw 30 and the humeral head 50 can be fixedly connected by the adhesive. Figure 9 As shown, the locking screw 20 is provided with a first central through hole 24 extending along its axial direction and a first communicating hole 25 communicating with the first central through hole 24. The first communicating hole 25 passes through the outer surface of the locking screw 20. The first central through hole 24 and the first communicating hole 25 form a first channel. Figure 8 As shown, the fastening screw 30 is provided with a second central through hole 32 extending along its axial direction and a second communicating hole communicating with the second central through hole. The second communicating hole penetrates the outer surface of the fastening screw 30 (not shown in the figure). The second central through hole 32 and the second communicating hole form a second channel.

[0064] Furthermore, in this embodiment, the provision of the first central through hole allows the locking screw 20 to be threaded into a designated position through a guide wire or Kirschner wire positioned on the scapula 40. The provision of the second central through hole allows the fastening screw 30 to be threaded into a designated position through a guide wire or Kirschner wire positioned on the scapula 40.

[0065] In other embodiments, the locking screw 20 is provided with a first channel connecting the outside of the locking screw 20 with the inside of the humeral head 50. Alternatively, the fastening screw 30 is provided with a second channel connecting the outside of the fastening screw 30 with the inside of the humeral head 50.

[0066] like Figure 6 、 Figure 7 As shown, the locking screw 20 is provided with a first wire passing hole 23 , and / or the fastening screw 30 is provided with a second wire passing hole 31 .

[0067] In this embodiment, the first wire hole 23 extends through two opposing surfaces of the locking screw 20, and the second wire hole 31 extends through two opposing surfaces of the fastening screw 30. A connecting wire is first passed through the first and second wire holes 23 and 31, forming an "8" shape to reduce rotation of the locking and fastening screws 20 and 30. The winding direction of the connecting wire in the "8" shape is opposite to the rotation direction of the locking and fastening screws 20 and 30. The connecting wire is then passed through the first wire hole 23 to connect the locking screw 20 to the muscle or ligament soft tissue, and the connecting wire is passed through the second wire hole 31 to connect the fastening screw 30 to the muscle or ligament soft tissue.

[0068] In other embodiments, the locking screw 20 is provided with a first wire hole 23 . Alternatively, the fastening screw 30 is provided with a second wire hole 31 .

Claims

1. A shoulder joint prosthesis assembly, characterized in that: The invention comprises a patch (10) and a connector, wherein the patch (10) has a mating surface (121) coplanar with the glenoid surface (41) of the scapula (40), and the mating surface (121) is used for contacting and mating with the humeral head (50); the connector is connected to one side of the mating surface (121), and is used for mounting the patch (10) on the scapula (40).

2. The shoulder joint prosthesis assembly according to claim 1, wherein: The connector is passed through the patch (10), one end of the connector is used to connect with the scapula (40); the other end protrudes outward from the patch (10), is located on one side of the matching surface (121), and is matched with the humeral head (50) stop.

3. The shoulder joint prosthesis assembly according to claim 1, wherein: The connecting piece includes a locking screw (20), which includes a locking screw rod (21) and a locking head (22). The locking screw rod (21) is used to penetrate the patch (10) and connect with the scapula (40), and the locking head (22) is threadedly connected to the patch (10).

4. The shoulder joint prosthesis assembly according to claim 3, wherein: The patch (10) is provided with a connected avoidance hole and a matching hole, the diameter of the matching hole is larger than the diameter of the avoidance hole, the avoidance hole is located on the side of the matching hole facing the scapula (40), the avoidance hole is used to avoid the locking screw (21), and a threaded portion matching with the locking head (22) is provided in the matching hole.

5. The shoulder joint prosthesis assembly according to claim 3 or 4, characterized in that: The locking screw (21) is provided with a first thread segment (211) for extending into the shoulder blade (40), and the locking head (22) is provided with a second thread segment (221), wherein the thread lead of the second thread segment (221) is greater than the thread lead of the first thread segment (211).

6. The shoulder joint prosthesis assembly according to claim 5, characterized in that: The difference between the thread lead of the second thread segment (221) and the thread lead of the first thread segment (211) is in the range of 0.1 mm to 0.5 mm.

7. The shoulder joint prosthesis assembly according to claim 3, 4 or 6, characterized in that: The connecting member also includes a fastening screw (30) on the same side as the locking screw (20), one end of the fastening screw (30) passes through the patch (10) for connection with the scapula (40), and the other end is connected to the patch (10); the axis of the locking screw (20) is set at an angle to the axis of the fastening screw (30).

8. The shoulder joint prosthesis assembly according to claim 7, wherein: The locking screw (20) is provided with a first channel communicating with the outside of the locking screw (20) and the inside of the humeral head (50), and / or the fastening screw (30) is provided with a second channel communicating with the outside of the fastening screw (30) and the inside of the humeral head (50).

9. The shoulder joint prosthesis assembly according to claim 7, wherein: The locking screw (20) is provided with a first wire passing hole (23), and / or the fastening screw (30) is provided with a second wire passing hole (31).

10. The shoulder joint prosthesis assembly according to claim 1, 2, 3, 4, 6, 8 or 9, wherein: The patch (10) comprises a patch body (11) and an inserting block (12), the inserting block (12) is fixedly connected to the patch body (11), and the mating surface (121) is arranged on the inserting block (12).

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