CN216417427U

CN216417427U - Shoulder joint prosthesis

Info

Publication number: CN216417427U
Application number: CN202122326741.7U
Authority: CN
Inventors: 王好奎; 张帅
Original assignee: Beijing AK Medical Co Ltd
Current assignee: Beijing AK Medical Co Ltd
Priority date: 2021-09-24
Filing date: 2021-09-24
Publication date: 2022-05-03
Anticipated expiration: 2031-09-24

Abstract

The utility model provides a shoulder joint prosthesis, include: the adjustable collar structure is provided with a rotating part; the first seat body is provided with an installation concave part, and the rotating part is arranged in the installation concave part; the locking piece is movably arranged on the first seat body and is provided with a locking position which protrudes out of the first seat body and locks the rotating part and an unlocking position which retracts into the first seat body and is separated from the rotating part; the second seat body is rotatably arranged below the first seat body; the locking driving structure is arranged between the first seat body and the second seat body, and the second seat body rotates to enable the locking driving structure to drive the locking piece to move from the unlocking position to the locking position. The technical scheme of the application effectively solves the problem that the shaft angle and the torsion angle between the humerus handle and the humeral head are not adjustable in the related art.

Description

Shoulder joint prosthesis

Technical Field

The utility model relates to a shoulder joint technical field particularly, relates to a shoulder joint prosthesis.

Background

At present, with the development of medical technology, artificial shoulder joint replacement becomes a main means for treating shoulder joint diseases, and the specific shoulder joint prosthesis replacement can have obvious curative effects on diseases such as proximal humeral three-part and four-part fractures, congenital deformity, shoulder malignant tumor, humeral head ischemic necrosis and the like.

Currently, during a shoulder prosthesis replacement procedure, the shaft angle and torsion angle between the prosthetic humeral stem and the humeral head are not adjustable, which affects the use effect of the patient.

SUMMERY OF THE UTILITY MODEL

The main object of the present invention is to provide a shoulder joint prosthesis to solve the problem of nonadjustable shaft angle and torsion angle between the humeral stem and the humeral head in the related art.

In order to achieve the above object, the present invention provides a shoulder joint prosthesis comprising: the adjustable collar structure is provided with a rotating part; the first seat body is provided with an installation concave part, and the rotating part is arranged in the installation concave part; the locking piece is movably arranged on the first seat body and is provided with a locking position which protrudes out of the first seat body and locks the rotating part and an unlocking position which retracts into the first seat body and is separated from the rotating part; the second seat body is rotatably arranged below the first seat body; the locking driving structure is arranged between the first seat body and the second seat body, and the second seat body rotates to enable the locking driving structure to drive the locking piece to move from the unlocking position to the locking position.

Furthermore, the locking piece comprises a locking rod and a reset piece matched with the locking rod, a plurality of positioning holes are formed in the rotating part at intervals, and the locking rod can be selectively inserted into the positioning holes.

Further, the reset member includes an elastic member or a magnetic member.

Further, the locking drive structure includes gear and rack structure, the gear sets up on the second pedestal, the rack structure is movably to be set up in first pedestal, rack structure and gear engagement, the tip of rack structure is provided with the drive body of rod, the rack structure has primary importance and second place, gear drive rack structure switches between primary importance and second place, when the rack structure is in the primary importance, the drive body of rod and locking lever butt cooperation are in the latched position and insert to the locating hole in order to promote the locking lever, when the rack structure is in the second place, the drive body of rod breaks away from the locking lever, the locking lever moves to the unlatched position and is deviate from in the locating hole under the effect that resets.

Further, the driving rod body is a plurality of, and the length of a plurality of driving rod bodies is increased in proper order by the top of locking piece to the below of locking piece, all is provided with the driving inclined plane on every driving rod body, and the locking lever includes a plurality ofly, and a plurality of locking levers set up with a plurality of driving rod body one-to-one, all are provided with driven inclined plane on every locking lever, driving inclined plane and driven inclined plane one-to-one butt cooperation.

Furthermore, the shoulder joint prosthesis further comprises a third seat body, a first connecting rod is arranged above the gear, a second connecting rod is arranged below the gear, the first connecting rod is connected with the first seat body, and the second connecting rod penetrates through the second seat body and is connected with the third seat body.

Furthermore, the shoulder joint prosthesis further comprises a rotation preventing rod, a convex strip is arranged on the outer wall of the rotation preventing rod, and the rotation preventing rod is connected with the third seat body.

Furthermore, a convex part is arranged at the edge of the bottom of the first seat body, a concave part is arranged at the edge of the top of the second seat body, the convex part is arranged in the concave part, and the area of the concave part is larger than that of the convex part.

Further, an arc-shaped hole is formed in the second seat body and is located on the side portion of the concave portion.

Further, the rotating part is of an arc-shaped structure, the shoulder joint prosthesis further comprises a shell, and the shell is sleeved between the adjustable collar structure and the first seat body.

Use the technical scheme of the utility model, adjustable lead structural rotation portion that has, be provided with the installation concave part on the first pedestal, rotation portion sets up in the installation concave part, and the movably setting of locking piece is on first pedestal, has protrusion in the latched position of first pedestal and locking rotation portion on the locking piece and returns the unblock position that returns to inside and break away from with rotation portion of first pedestal. The second seat body is positioned below the first seat body and can rotate. The locking driving structure is arranged between the first seat body and the second seat body, and the second seat body rotates to enable the locking driving structure to drive the locking piece to move from the unlocking position to the locking position. Through the arrangement, the angle of the adjustable collar structure can be adjusted under the action of the locking piece and the locking driving structure, so that the shoulder joint prosthesis can be adapted to more sizes, and the universality of products can be effectively improved. And the locking mode of the locking piece and the locking driving structure is stable, so that the stability of the shoulder joint prosthesis can be effectively improved. When the shoulder joint prosthesis is replaced, the adjustable collar structure can be adjusted according to the self condition of a patient, and the adjustable collar structure is adjusted to a proper position, so that the using effect of the patient can be improved. The technical solution of the present application thus effectively solves the problem of non-adjustable shaft and torsion angles between the humeral stem and the humeral head in the related art.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic perspective view of an embodiment of a shoulder joint prosthesis according to the invention;

fig. 2 shows a perspective view of the locking drive of the shoulder joint prosthesis of fig. 1;

FIG. 3 shows a perspective view of the adjustable collar structure of the shoulder joint prosthesis of FIG. 1;

FIG. 4 illustrates a perspective view of a first seat of the shoulder joint prosthesis of FIG. 1;

FIG. 5 illustrates a perspective view of a second seat of the shoulder joint prosthesis of FIG. 1;

FIG. 6 shows a perspective view of an anti-rotation stem of the shoulder joint prosthesis of FIG. 1;

fig. 7 shows a schematic front view of the outer shell of the shoulder joint prosthesis of fig. 1;

fig. 8 shows a perspective view of the locking drive and the locking element of fig. 2;

FIG. 9 shows a schematic cross-sectional view of the lock of FIG. 2 in a locked position;

fig. 10 shows a cross-sectional schematic view of the lock of fig. 2 in an unlocked position.

Wherein the figures include the following reference numerals:

10. an adjustable collar structure; 11. a rotating part; 111. positioning holes; 20. a first seat body; 21. a mounting recess; 22. a convex portion; 30. a locking member; 31. a lock lever; 311. a driven bevel; 32. a reset member; 40. a second seat body; 41. a recess; 42. an arc-shaped hole; 50. locking the drive structure; 51. a gear; 511. a first connecting rod; 512. a second connecting rod; 52. a rack structure; 521. a driving rod body; 5211. a drive ramp; 60. a third seat body; 70. an anti-rotation rod; 71. a convex strip; 80. a housing.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

As shown in fig. 1 to 4, in the present embodiment, a shoulder joint prosthesis includes: the adjustable collar structure 10, the first seat 20, the locking member 30, the second seat 40, and the locking driving structure 50. The adjustable collar structure 10 has a rotating portion 11. The first housing 20 is provided with a mounting recess 21, and the rotating part 11 is disposed in the mounting recess 21. The locking member 30 is movably disposed on the first seat 20, and the locking member 30 has a locking position protruding from the first seat 20 and locking the rotating portion 11, and an unlocking position retracting into the first seat 20 and disengaging from the rotating portion 11. The second seat 40 is rotatably disposed below the first seat 20. The locking driving structure 50 is disposed between the first seat 20 and the second seat 40, and the second seat 40 rotates to drive the locking member 30 to move from the unlocking position to the locking position by the locking driving structure 50.

By applying the technical solution of the present embodiment, the adjustable collar structure 10 has a rotating portion 11, the first seat 20 is provided with a mounting recess 21, the rotating portion 11 is disposed in the mounting recess 21, the locking member 30 is movably disposed on the first seat 20, and the locking member 30 has a locking position protruding from the first seat 20 and locking the rotating portion 11 and an unlocking position retracting to the inside of the first seat 20 and disengaging from the rotating portion 11. The second seat 40 is located below the first seat 20 and can rotate. The locking driving structure 50 is disposed between the first seat 20 and the second seat 40, and the second seat 40 rotates to make the locking driving structure 50 drive the locking member 30 to move from the unlocking position to the locking position. With the above arrangement, the angle of the adjustable collar structure 10 can be adjusted under the action of the locking member and the locking driving structure 50, so that the shoulder joint prosthesis can be adapted to more sizes, which can effectively improve the versatility of the product. Furthermore, the locking manner of the locking member 30 and the locking drive structure 50 is stabilized, and the stability of the shoulder joint prosthesis can be effectively improved. When the shoulder joint prosthesis is replaced, the adjustable collar structure 10 can be adjusted according to the self condition of a patient, and the adjustable collar structure 10 is adjusted to a proper position, so that the use effect of the patient can be improved. The technical solution of the present embodiment thus effectively solves the problem of non-adjustable shaft angle and torsion angle between the humeral stem and the humeral head in the related art.

As shown in fig. 1 to 4 and 8, in the present embodiment, the locking member 30 includes a lock bar 31 and a reset member 32 engaged with the lock bar 31, a plurality of positioning holes 111 are spaced on the rotating portion 11, and the lock bar 31 is selectively inserted into the positioning holes 111. The reset member 32 can ensure that the lock rod 31 is in the unlocking position, and the locking driving mechanism 50 drives the lock rod 31 to overcome the acting force of the reset member 32 on the lock rod 31, so that the lock rod 31 is inserted into the positioning hole 111, and thus the locking of the adjustable collar structure 10 is realized. The positioning holes 111 are arc-shaped.

In the present embodiment, the anti-rotation rod 70 is connected to the third housing 60 in a tapered manner, and a gear shaft is provided between the second housing 40 and the third housing 60 and keeps rotating around the gear shaft. The second seat body 40 is provided with a long round hole, the circumferential rotation of the second seat body is controlled through a screw, the adjustment of a torsion angle is realized, and the long round hole has a limiting function. The first seat body 20 and the second seat body 40 are connected through a gear shaft, the gear rotates in the rotation process of the second seat body 40 to drive the guide rail to move left and right, the ejector rod on the guide rail transversely moves left and right, and the rod body in the reset piece 32 can be ejected and moved forward in the left and right moving process due to the fact that one end of the rod is provided with an oblique angle, so that an adjustable collar is completed, and when the guide rail moves, the rod body in the reset piece 32 returns to the initial position due to compression and rebound of the reset piece 32, and unlocking is completed. The locking rod 31 can limit and adjust the pretightening force of the spring.

As shown in fig. 1 to 4 and 8, in the present embodiment, the reset element 32 includes an elastic element, which has a simple structure and is easy to be disposed, and specifically, in the present embodiment, the elastic element includes a spring, which is fixed between the lock rod 31 and the first seat 20, and the spring is in a natural state or a compressed state, i.e., not stretched, when the lock rod 31 is in the unlocking position. When the lock driving mechanism 50 applies a force to the lock lever 31, the spring is stretched, and the lock lever is inserted into the positioning hole 111, thereby locking the rotating portion 11.

Specifically, as shown in fig. 8 and 9, in this embodiment, the locking member further includes a transmission rod, an annular protrusion is disposed on the transmission rod, a spring is sleeved on the transmission rod, the bottom of the spring and the transmission rod is locked in a compressed state, i.e., an unlocked position, and the middle of the spring and the lock rod 31 and the transmission rod are locked in an extended state, i.e., a locked position.

In the embodiment not shown in the figures, magnetic parts are arranged inside the first seat body and at the end part of the lock rod, the lock rod is fixed at the unlocking position in a magnetic attraction matching mode, and under the action of the locking driving structure, the magnetic parts on the lock rod are separated from the magnetic parts inside the first seat body, so that the rotating part is locked by locking.

As shown in fig. 1 to 4 and 8, in the present embodiment, the locking driving structure 50 includes a gear 51 and a rack structure 52, the gear 51 is disposed on the second seat 40, the rack structure 52 is movably disposed in the first seat 20, the rack structure 52 is engaged with the gear 51, an end of the rack structure 52 is provided with a driving rod 521, the rack structure 52 has a first position and a second position, the gear 51 drives the rack structure 52 to switch between the first position and the second position, when the rack structure 52 is in the first position, the driving rod 521 is in abutting engagement with the lock rod 31 to push the lock rod 31 to be in the locking position and to be inserted into the positioning hole 111, when the rack structure 52 is in the second position, the driving rod 521 is disengaged from the lock rod 31, and the lock rod 31 is moved to the unlocking position and to be disengaged from the positioning hole 111 by the reset member 32. A slide way structure is arranged in the first seat 20, the rack structure 52 is movably arranged on the slide way structure, the gear 51 is engaged with the rack structure 52, and the gear 51 rotates to drive the rack structure 52 to move, namely, move from the first position to the second position. A driving rod 521 is further disposed at two ends of the rack structure 52, the driving rod 521 is matched with the lock rod 31, and the rack structure 52 moves to enable the driving rod 521 to push the lock rod 31, so that the lock rod 31 is in a locking position; when the gear 51 rotates, the rack structure 52 moves from the second position to the first position, the driving rod 521 is not engaged with the lock rod 31, the lock rod 31 retracts under the action of the reset element 32, i.e. returns to the unlocking position, and the rotating portion 11 can rotate, i.e. the collar adjusting structure 10 can adjust the angle. The above adjustment method has good stability.

As shown in fig. 1 to 4 and 8, in the present embodiment, a plurality of driving rod bodies 521 are provided, the lengths of the plurality of driving rod bodies 521 are sequentially increased from the upper side of the locking member 30 to the lower side of the locking member 30, each driving rod body 521 is provided with a driving inclined surface 5211, the lock rod 31 includes a plurality of lock rods 31, the plurality of lock rods 31 and the plurality of driving rod bodies 521 are arranged in a one-to-one correspondence manner, each lock rod 31 is provided with a driven inclined surface 311, and the driving inclined surfaces 5211 and the driven inclined surfaces 311 are in one-to-one abutting engagement. In this embodiment, the length direction of the driving rod 521 is perpendicular to the length direction of the lock lever 31, when the driving rod 521 moves to contact with the lock lever 31, the driving inclined surface 5211 contacts with the driven inclined surface 311, and at this time, the surface-to-surface contact can realize the movement of the lock lever 31, thereby realizing the locking of the lock lever 31 to the rotating part 11.

In the embodiment not shown in the figures, the center of the driving rod and the center of the locking rod are collinear, so that the driving rod can directly push the locking rod to move. However, such an arrangement occupies a large space, which results in an increase in the size of the first housing.

As shown in fig. 1 to 5, in the present embodiment, the shoulder joint prosthesis further includes a third seat 60, a first connecting rod 511 is disposed above the gear 51, a second connecting rod 512 is disposed below the gear 51, the first connecting rod 511 is connected to the first seat 20, and the second connecting rod 512 passes through the second seat 40 and is connected to the third seat 60. The first connecting rod 511 penetrates through the first seat 20 to be connected, specifically, a first limiting member is disposed at a first end of the first connecting rod 511, and the first connecting rod 511 and the first seat 20 are in clearance fit, so that the gear 51 can rotate without driving the first seat 20 to rotate. Second connecting rod 512 and second pedestal 40 are interference fit, simultaneously, scribble fixed glue at the junction of second connecting rod 512 and second pedestal 40, perhaps, be provided with the rubber convex part on the outer wall of second connecting rod 512, be provided with the concave part in the inside of second pedestal 40, when assembling, press gear 51 downwards hard, make the rubber convex part fill in to the concave part in, also can realize the connection of second connecting rod 512 and second pedestal 40 like this, and simultaneously, clearance fit between second connecting rod 512 and the third pedestal 60, can prevent like this that gear 51 from rotating and drive the rotation of third pedestal 60. A second stopper is provided at an end of the second connecting rod 512 so that the second connecting rod 512 and the third housing 60 can be separated. The arrangement mode effectively ensures the stability of the whole structure of the shoulder joint prosthesis.

As shown in fig. 1 to 6, in the present embodiment, the shoulder joint prosthesis further includes an anti-rotation rod 70, a convex strip 71 is provided on an outer wall of the anti-rotation rod 70, and the anti-rotation rod 70 is connected to the third seat 60. The anti-rotation rod 70 is long, so that after the anti-rotation rod is implanted into a patient body, the stability of the shoulder joint prosthesis can be improved, meanwhile, due to the fact that the convex strips 71 are arranged on the outer wall of the anti-rotation rod 70, the resistance of the anti-rotation rod 70 to rotation is increased due to the arrangement of the convex strips 71, the stability of the anti-rotation rod 70 is further improved, and the anti-rotation rod 70 is prevented from rotating or shaking.

As shown in fig. 1 to 4, in the present embodiment, the edge of the bottom of the first seat 20 is provided with a convex portion 22, the edge of the top of the second seat 40 is provided with a concave portion 41, the convex portion 22 is disposed in the concave portion 41, and the area of the concave portion 41 is larger than the area of the convex portion 22. The convex portion 22 and the concave portion 41 are correspondingly arranged, the convex portion 22 can move in the concave portion 41, and the concave portion 41 can limit the moving range of the convex portion 22, so that the over-rotation of the second holder 40 can be effectively avoided. Meanwhile, the limit mode of the matching of the concave part 41 and the convex part 22 is simple and efficient.

As shown in fig. 1 to 4, in the present embodiment, the second holder 40 is provided with an arc-shaped hole 42, and the arc-shaped hole 42 is located at a side portion of the recess 41. The arc-shaped holes 42 are arranged to fix the second fastening structure 40 after the position of the second fastening structure 40 is adjusted, and the screws pass through the arc-shaped holes 42 to fix the second fastening structure 40 and the third fastening structure 60, so that the second fastening structure 40 can be fixed after being rotated, and the total weight of the shoulder joint prosthesis can be reduced.

As shown in fig. 1 to 8, in the present embodiment, the rotating portion 11 is an arc-shaped structure, and the shoulder joint prosthesis further includes a housing 80, wherein the housing 80 is sleeved between the adjustable collar structure 10 and the first seat 20. The rotating part 11 is of an arc-shaped structure, so that the rotating part 11 can rotate conveniently, and further the rotation of the adjustable collar structure 10 can be realized conveniently. The housing 80 protects the internal structure, thus preventing other structures from entering the interior and affecting the angle of the adjustable collar structure. Specifically, in the present embodiment, the casing 80 has a porous structure, so that the bone structure of the human body can be easily connected and fixed to the casing 80.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … … surface," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A shoulder joint prosthesis, comprising:

an adjustable collar structure (10) having a rotating portion (11);

the first seat body (20), the first seat body (20) is provided with an installation concave part (21), and the rotating part (11) is arranged in the installation concave part (21);

the locking piece (30) is movably arranged on the first seat body (20), and the locking piece (30) is provided with a locking position which protrudes out of the first seat body (20) and locks the rotating part (11) and an unlocking position which retracts into the first seat body (20) and is separated from the rotating part (11);

the second seat body (40) is rotatably arranged below the first seat body (20);

the locking driving structure (50) is arranged between the first seat body (20) and the second seat body (40), and the second seat body (40) rotates to enable the locking driving structure (50) to drive the locking piece (30) to move from the unlocking position to the locking position.

2. The shoulder joint prosthesis according to claim 1, wherein the locking member (30) comprises a locking rod (31) and a restoring member (32) engaged with the locking rod (31), the rotating portion (11) is provided with a plurality of positioning holes (111) at intervals, and the locking rod (31) is selectively inserted into the positioning holes (111).

3. Shoulder joint prosthesis according to claim 2, characterized in that the reduction element (32) comprises an elastic or magnetic element.

4. The shoulder joint prosthesis of claim 2, wherein the locking driving structure (50) comprises a gear (51) and a rack structure (52), the gear (51) is disposed on the second seat (40), the rack structure (52) is movably disposed in the first seat (20), the rack structure (52) is engaged with the gear (51), a driving rod (521) is disposed at an end of the rack structure (52), the rack structure (52) has a first position and a second position, the gear (51) drives the rack structure (52) to switch between the first position and the second position, when the rack structure (52) is in the first position, the driving rod (521) and the locking rod (31) are in abutting engagement to push the locking rod (31) to be in the locking position and to be inserted into the positioning hole (111), when rack structure (52) are in the second position, drive body of rod (521) breaks away from locking lever (31), locking lever (31) move under the effect of piece (32) that resets to the unblock position and follow and deviate from in locating hole (111).

5. The shoulder joint prosthesis of claim 4, wherein the driving rod body (521) is plural, the length of the driving rod body (521) is increased from the upper side of the locking member (30) to the lower side of the locking member (30), a driving inclined surface (5211) is provided on each driving rod body (521), the locking rod (31) comprises plural locking rods (31) and plural locking rods (521), a driven inclined surface (311) is provided on each locking rod (31), and the driving inclined surface (5211) and the driven inclined surface (311) are in butt joint with each other in a one-to-one correspondence manner.

6. The shoulder joint prosthesis according to claim 4, further comprising a third seat (60), wherein a first connecting rod (511) is disposed above the gear (51), a second connecting rod (512) is disposed below the gear (51), the first connecting rod (511) is connected with the first seat (20), and the second connecting rod (512) passes through the second seat (40) and is connected with the third seat (60).

7. The shoulder joint prosthesis according to claim 6, further comprising an anti-rotation lever (70), wherein a protruding strip (71) is provided on an outer wall of the anti-rotation lever (70), and the anti-rotation lever (70) is connected to the third seat body (60).

8. Shoulder joint prosthesis according to claim 1, characterized in that a protrusion (22) is provided at the edge of the bottom of the first seat (20), a recess (41) is provided at the edge of the top of the second seat (40), the protrusion (22) being provided in the recess (41), the area of the recess (41) being larger than the area of the protrusion (22).

9. Shoulder joint prosthesis according to claim 8, characterized in that the second seat (40) is provided with an arc-shaped hole (42), the arc-shaped hole (42) being located at the side of the recess (41).

10. Shoulder joint prosthesis according to any of claims 1 to 9, characterized in that the rotation part (11) is an arc-shaped structure, the shoulder joint prosthesis further comprising a housing (80), the housing (80) being nested between the adjustable collar structure (10) and the first seat (20).