Shoulder joint prosthesis assembly

Abstract

The invention 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 present invention relates to the technical field of medical devices, and 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 cavity surface (socket) of the scapula, allowing the humeral head to rotate within the glenoid cavity 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 cooperates with the shoulder joint prosthesis and is rotatably arranged in the shoulder joint prosthesis.

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

[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 present invention provides a shoulder joint prosthesis assembly, which can avoid the complete resection of the glenoid surface under the above-mentioned conditions, reduce the difficulty of surgical resection and operation difficulty, and help to reduce the surgical recovery time.

[0006] In order to achieve the above objectives, the following technical solutions are provided:

[0007] A shoulder joint prosthesis component 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 matching surface and matches with the humeral head stopper.

[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 matching surface is located between the fitting surface and the penetration surface; the connecting piece includes a locking screw, the locking screw includes a locking screw and a locking head, the locking screw is used to penetrate 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 matching 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 a thread lead of the second thread segment and a thread lead of the first thread segment is in a range of 0.1 mm to 0.5 mm.

[0013] Furthermore, the connecting member 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 with 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] Further, the locking screw is provided with a first channel connecting the outside of the locking screw with the inside of the humeral head, and / or the fastening screw is provided with a second channel connecting the outside of the fastening screw with 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 block includes a patch block body and an insert block, the insert block is fixedly connected to the patch block body, and the mating surface is arranged on the insert block.

[0017] Furthermore, a slot is provided on the patch body, and the insert block is inserted into the slot and has an interference fit 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 matching surface that is coplanar with the glenoid surface of the scapula, and the matching surface is in contact and matching with the humeral head. The patch is connected to the scapula by a connector, and the connector is connected to one side of the matching surface. In this way, when the damage to the glenoid surface is relatively small, the patch is connected to the scapula, and the matching surface can be coplanar with the glenoid surface and in contact and matching with the humeral head. The matching surface can fill the damaged glenoid surface to facilitate the rotational matching between the humeral head and the scapula. In addition, the provision of the patch avoids the problem in the related art that the glenoid surface on the scapula needs to be completely removed, 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 shoulder joint prosthesis assembly according to the present invention when it cooperates with the humeral head;

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

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

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

[0023] Figure 5 Shows Figure 2 A schematic diagram of a three-dimensional structure of a shoulder joint prosthesis component in a perspective view from a second viewing angle;

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

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

[0026] Figure 8 A schematic cross-sectional view of a fastening screw of a shoulder joint prosthesis assembly is shown;

[0027] Fig. 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. penetration surface; 12. inserting block; 121. matching surface;

[0030] 20. locking screw; 21. locking screw rod; 211. first threaded section; 22. locking head; 221. second threaded section; 23. first threading 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 in conjunction with 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, 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 to contact and mate with the humeral head 50; the connector is used to install 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 matching surface 121 can be coplanar with the glenoid surface 41 and contact and match with the humeral head 50. The matching surface 121 can fill the damaged glenoid surface 41 to facilitate the rotational match between the humeral head 50 and the scapula 40. In addition, the setting 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 glenoid surface 41 is less damaged, the glenoid surface on the scapula needs to be completely removed, avoiding the removal of the original undamaged or lightly damaged native tissue, reducing the difficulty of removal and operation, and the installation operation of the shoulder joint prosthesis is simpler.

[0037] The arrangement of the connecting piece facilitates the connection of the patch 10 to the scapula 40. The connecting piece is arranged on one side of the mating surface 121, which can effectively avoid the mating surface 121, reduce the possibility of interference between the connecting piece and the mating surface 121, increase the contact area between the mating surface 121 and the humeral head 50, and improve the reliability of the mating surface 121 and the humeral head 50 when they are in contact. The arrangement of the mounting hole for mounting the screw on the mating surface 121 in the related art is avoided, and the possibility of the edge of the mounting hole contacting the humeral head 50 to cause wear to the humeral head 50 is reduced.

[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, wherein coplanar refers to the glenoid surface 41 being a hyperbolic surface. In the present embodiment, the mating surface 121 is also a hyperbolic surface, and the mating height of the mating portion of the mating surface 121 and the glenoid surface 41 is the same, and the curvature 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 be in contact and cooperation with the humeral head, thereby ensuring that the humeral head is in contact and cooperation 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 according to the glenoid surface 41 removed from the patient, and can be manufactured through molding, 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 protruding part of the patch 10 serves to stop and limit the patch after the patch 10 is installed on the scapula 40.

[0041] The first end and the second end correspond to the two ends of the connecting piece, and the part of the protruding patch 10 is located on one side of the mating surface 121 and cooperates with the humeral head 50. In this way, when the humeral head 50 rotates in the glenoid surface 41 and the mating surface 121, the second end of the connecting piece 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 coming off 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 connecting piece as a prosthesis is to limit the lateral excessive sliding of the humeral head).

[0042] Furthermore, when the damage to the glenoid surface 41 is relatively small, it is necessary to perform local excision on the edge of the scapula 40, and the reliability of the connection between the muscles and ligaments near the excised scapula 40 and the humeral head 50 is reduced. By setting the second end of the connector, the movement of the humeral head 50 on one side of the excised scapula 40 can be limited, that is, the movement of the humeral head 50 on one side of the patch 10 can be limited, so as to reduce the possibility of the humeral head 50 coming out of one side of the mating surface 121. At the same time, for different sliding conditions 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 for matching during installation, so that the distance at 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 to have 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] Among them, the patch body 11 can be selectively connected to a plurality of inserts 12, the patch body 11 is connected to the scapula 40, and the mating surface 121 is set on the insert 12. In this way, the operator can select a suitable insert 12 to connect with 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, so that the humeral head 50 can rotate more smoothly in the mating surface 121 and the glenoid surface 41.

[0046] In this embodiment, the patch body 11 is first fixed on the scapula 40. Due to the different bone density and other conditions of the scapula 40 of different patients, the actual position of the patch body 11 on the scapula 40 is different from the preset position. At this time, a suitable insert 12 can be selected according to the actual position of the patch body 11, so that the mating surface 121 can be coplanar with the glenoid surface 41, so that the rotation of the humeral head 50 on the mating surface 121 and the glenoid surface 41 is smoother.

[0047] In this embodiment, the patch body 11 is made of metal. The plug 12 is made of polymer materials, such as polymer polyethylene and polyetheretherketone. By making a plurality of plugs 12 with different thicknesses, the thickness of the plurality of plugs 12 is set in a gradient of 0.5 mm, and the thickness range of the plug 12 is within the range of 5 mm to 15 mm, so that the operator can timely select a suitable plug 12 for implantation, so as to improve the joint motion performance of the shoulder joint and obtain a more suitable joint gap. The edge of the plug 12 is provided with a spherical surface, the radius of the spherical surface is within the range of 20 mm to 50 mm, and the radius of the spherical surface on different plugs 12 is set in a gradient of 1 mm.

[0048] Specifically, a slot is provided on the patch body 11, and the plug 12 is inserted into the slot and has an interference fit with the slot. The structure of the slot and the plug 12 is simple, which facilitates the installation operation of the plug 12 on the patch body 11. And the slot and the plug 12 have an interference fit, so that the connection between the plug 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 in the direction from close to the slot to away from the slot. The opposite sides of the plug 12 are matched with the slot (the matching 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 piece includes a locking screw 20, 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, can effectively avoid the mating surface 121, reduce the possibility of interference between the locking screw 20 and the mating surface 121, increase the contact area between the mating surface 121 and the humeral head 50, and improve the reliability of the mating surface 121 and the humeral head 50 when they are in contact. The related art of opening a mounting hole for mounting the screw on the mating surface 121 is avoided, and the possibility of the edge of the mounting hole contacting with the humeral head 50 to cause wear to the humeral head 50 is reduced. In addition, 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 block 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 matching with the locking head 22 is provided in the matching hole.

[0052] By providing the avoidance hole and the matching hole, the locking head 22 can apply a force toward the scapula 40 to the patch 10, so that the patch 10 can be more reliably fixed on the scapula 40. In addition, the provision of the threaded portion in the matching hole makes the connection between the locking head 22 and the patch 10 more reliable. The provision of the avoidance hole allows the locking screw 21 to pass through the patch 10 and extend into the scapula 40.

[0053] like Figure 5As shown, the locking screw 21 is provided with a first thread segment 211 for extending into the scapula 40, and the locking head 22 is provided with a second thread segment 221, and the thread lead of the second thread segment 221 is greater than the thread lead of the first thread segment 211. Since the thread lead of the second thread segment 221 is different from the thread lead of the first thread segment 211, the locking screw 20 can present different tightening effects during the screwing process. When the locking screw 20 is rotated so that the locking screw 21 begins to be inserted into the scapula 40, the scapula 40 around the locking screw 21 can be tapped with threads that match the first thread segment 211. When the locking screw 20 is rotated so that the locking head 22 is threadedly engaged with the matching hole on the patch 10, since the thread lead of the second thread segment 221 is greater than the thread lead of the first thread segment 211, when the locking screw 20 is rotated one circle, the movement distance of the locking screw 20 is equal to the movement of the locking head 22 along the axial direction of the locking screw 20, so that the movement distance of the locking screw 20 is greater than the thread lead of the second thread segment 221, so that the locking head 22 can pressurize the locking screw 21, so that the locking screw 21 can be inserted deeper into the scapula 40, so as to improve the fastening effect when the locking screw 21 is connected to the surrounding scapula 40. In addition, the difference between the thread lead of the second thread segment 221 and the thread lead of the first thread segment 211 can ensure that the locking screw 20 always ensures that the scapula 40 and the patch 10 are tightly fixed before the locking screw 20 and the patch 10 are tightly fixed during the fastening 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 the thread lead refers to the axial distance that any point on the thread moves when it rotates along the same spiral line. In this embodiment, the thread lead of the second thread segment 221 is in the range of 1.5 mm to 2 mm, the thread lead of the first thread segment 211 is in the range of 1.15 mm to 1.5 mm, and the first thread segment 211 and the second thread segment 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 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. That is, the axis of the locking screw 20 is not set parallel to the axis of the fastening screw 30. In this way, since the axis of the locking screw 20 is set at an angle to the axis of the fastening screw 30, the connection strength of the connector is improved when subjected to forces in different directions, forming a cross fixation of the connector with 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 on the horizontal plane, and the angle between the axis of the locking screw 20 and the axis of the fastening screw 30 on 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 on the horizontal plane is 5°, 10° or 15°.

[0060] In this embodiment, the locking screw 20 and the fastening screw 30 are both made of cobalt-chromium-molybdenum or titanium alloy plus ceramic coating material or other single metal or composite material with good biocompatibility and wear resistance. The first ends of the locking screw 20 and the fastening screw 30 both have self-tapping cutting edges, and titanium and hydroxyapatite are sprayed on the thread surface, so that the locking screw 20 and the fastening screw 30 can have better screw-in performance, and the rough coating surface can ensure continuous ingrowth and adhesion of the bone structure, and the long-term stability is better.

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

[0062] The locking screw 20 is provided with a first channel connecting the outside of the locking screw 20 and the inside of the humeral head 50, and the fastening screw 30 is provided with a second channel connecting the outside of the fastening screw 30 and the inside of the humeral head 50. The provision of the first channel enables the operator to deliver adhesive from the outside of the locking screw 20 into the humeral head 50 to fix the locking screw 20 and the humeral head 50 with the adhesive. The provision of the second channel enables the operator to deliver adhesive from the outside of the fastening screw 30 into the humeral head 50 to fix 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 loose, 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. Fig. 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, and the first communicating hole 25 penetrates 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 passing through the outer surface of the fastening screw 30 (not shown in the figure). The second central through hole and the second communicating hole form a second channel.

[0064] Furthermore, in this embodiment, the first central through hole is provided so that the locking screw 20 can pass through the guide wire or Kirschner wire positioned on the scapula 40 to be screwed into the specified position. The second central through hole is provided so that the fastening screw 30 can pass through the guide wire or Kirschner wire positioned on the scapula 40 to be screwed into the specified position.

[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 passes through two oppositely disposed surfaces of the locking screw 20, and the second wire hole 31 passes through two oppositely disposed surfaces of the fastening screw 30. First, a connecting wire is passed through the first wire hole 23 and the second wire hole 31, and the connecting wire is formed into an "8" shape to reduce the rotation of the locking screw 20 and the fastening screw 30. And the winding direction of the connecting wire when forming the "8" shape is opposite to the rotation direction of the locking screw 20 and the fastening screw 30. Then, the connecting wire is 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 passing hole 23. Alternatively, the fastening screw 30 is provided with a second wire passing hole 31.

Claims

1. A shoulder joint prosthesis assembly, characterized in that: The invention comprises a patch (10) and a connecting piece, 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 connecting piece is connected to one side of the mating surface 121, and is used for installing the patch (10) on the scapula (40).

2. The shoulder joint prosthesis assembly according to claim 1, characterized in that: The connecting piece is inserted into the patch (10), one end of which 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 matches with the humeral head (50) stopper.

3. The shoulder joint prosthesis assembly according to claim 1, characterized in that: The connecting piece comprises a locking screw (20), wherein the locking screw (20) comprises a locking screw rod (21) and a locking head (22), wherein 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 with the patch (10).

4. The shoulder joint prosthesis assembly according to claim 3, characterized in that: The patch block (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 arranged at an angle to the axis of the fastening screw (30).

8. The shoulder joint prosthesis assembly according to claim 7, characterized in that: 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), and / or 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).

9. The shoulder joint prosthesis assembly according to claim 7, characterized in that: 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, characterized in that: The patch block (10) comprises a patch block body (11) and an insert block (12); the insert block (12) is fixedly connected to the patch block body (11), and a mating surface (121) is arranged on the insert block (12).

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