An artificial shoulder joint prosthesis with high mobility

Abstract

The present invention provides an artificial shoulder joint prosthesis with high mobility, belonging to the technical field of medical devices. It includes a glenosphere head, a shoulder pelvis back plate is arranged on one side of the glenosphere head, fixing screws are arranged at equal angles on the inner side of the shoulder pelvis back plate, a glenoid liner is sleeved on the outer side of the glenosphere head, and an angle assembly is also included, the angle assembly is installed on the outer side of the glenoid liner, the angle assembly is used to increase the movable angle of the glenoid liner, and a telescopic assembly is installed at the tail of the angle assembly, and the telescopic assembly is used to change the insertion length of the bone stem in the humerus. The present invention is provided with an angle assembly, the glenoid liner rotates with the universal ball head, the glenosphere head and the glenoid liner produce relative displacement, the flexibility of the shoulder joint prosthesis is improved, the wear of the glenoid liner and the glenosphere head in contact and rotation is reduced, the service life is increased, and the comfort of the patient during rehabilitation training is improved.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to an artificial shoulder joint prosthesis with high mobility. Background Art

[0002] Shoulder replacement surgery refers to a surgery in which the human shoulder joint is removed and replaced with an artificial shoulder prosthesis when the human shoulder joint is diseased. The artificial shoulder joint is mainly made of metal, ceramic and other materials according to the shape, structure and function of the human shoulder joint. It is implanted into the human body through surgical techniques to replace the function of the diseased joint, so as to relieve joint pain and restore shoulder joint function.

[0003] When patients perform arm rotation rehabilitation training, the connection between the liner and the glenosphere head is a continuous force-bearing point, and there is still a possibility of excessive wear, which affects the service life. At the same time, when the stem is installed in the humerus, due to the different bone sizes of patients, the force applied to the glenosphere head during exercise is different. During large-scale arm movements, the stem cannot provide continuous support for the glenosphere head, which can easily cause the stem to loosen during exercise and cause the plastic liner and glenosphere head to fall off.

[0004] Therefore, the present application provides an artificial shoulder joint prosthesis with high mobility to meet the needs. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide an artificial shoulder joint prosthesis with a high range of motion to solve the problem that when existing patients perform arm rotation rehabilitation training, the connection between the liner and the glenosphere head is used as a continuous force-bearing movement point, which still has the possibility of excessive wear and affects the service life. At the same time, when the stem is installed in the humerus, due to the different bone sizes of patients, the force conditions of the glenosphere head during exercise are different. During large-scale arm movements, the stem cannot provide continuous support for the glenosphere head, which can easily cause the stem to loosen during exercise and cause the plastic liner and the glenosphere head to fall off.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] An artificial shoulder joint prosthesis with high mobility includes a glenosphere head, a shoulder pelvis back plate is arranged on one side of the glenosphere head, fixing screws are arranged at equal angles on the inner side of the shoulder pelvis back plate, a glenoid liner is sleeved on the outer side of the glenosphere head, an angle assembly is installed on the outer side of the glenoid liner, the angle assembly is used to increase the movable angle of the glenoid liner, and a telescopic assembly is installed at the tail of the angle assembly, the telescopic assembly is used to change the insertion length of the bone stem 68 in the humerus.

[0008] Optionally, the glenosphere head and the glenosphere liner are made of titanium alloy material, the fixing screws are provided in three groups, and the angle between the fixing screws and the central axis of the shoulder-pelvic back plate is 30-50°.

[0009] Optionally, the angle assembly includes a mounting shell, the mounting shell is mounted on the outside of the glenoid liner, and a slide rail 1 and a slide rail 2 are provided at the bottom of the mounting shell.

[0010] Optionally, the slide rail 1 and the slide rail 2 rotate at the ends of the mounting shell, and a sliding rod is slidably provided inside the slide rail 1 and the slide rail 2, and one end of the sliding rod is connected to a universal ball head.

[0011] Optionally, the tail end of the universal ball head is mounted on the bottom surface of the glenoid liner, the bottom surface of the sliding rod is connected to a fixing plate, and the top of the fixing plate is connected to the anti-shoulder humerus body.

[0012] Optionally, a tantalum coating is provided on the surface of the mounting shell, the slide rail one and the slide rail two are arranged in an arc shape, the slide rail one is located at the bottom of the slide rail two, the slide rail one and the slide rail two are arranged in a cross shape, and the sliding rod is nested inside the slide rail one and the slide rail two at the same time.

[0013] Optionally, the telescopic assembly includes a hand-tightening ring, which is installed at the bottom of the reverse scapulohumeral body, and a gear disk is nested on the inner side of the hand-tightening ring.

[0014] Optionally, the toothed disc and the bevel gear are meshed with each other, the bevel gear rotates at the bottom of the anti-scapulohumeral body, the tail end of the bevel gear is connected to a transmission rod, the tail end of the transmission rod is connected to a bevel gear set, and the output end of the bevel gear set is connected to a screw.

[0015] Optionally, the outer side of the screw rod is threadedly connected to a threaded block, a bone handle is sleeved on the outer side of the threaded block, a fixing sleeve is sleeved on the outer side of the bone handle, a clamping block is provided on one side of the hand-tightening ring, and the clamping block is connected to the side wall of the fixing sleeve through a torsion spring.

[0016] Optionally, the hand-tightening ring rotates at the bottom of the reverse shoulder humerus body, the transmission rod is installed on the inner wall of the fixing sleeve, the screw rod is arranged perpendicular to the bottom surface of the hand-tightening ring, and the bone handle slides inside the fixing sleeve.

[0017] Compared with the prior art, the present invention has at least the following beneficial effects:

[0018] In the above scheme, by providing an angle component, when the glenosphere head and the glenosphere liner are in contact and rotate, the sliding rod slides on the inner side of the slide rails one and two. Since the reverse shoulder humerus body is connected with the hand-tightening ring and the fixing sleeve, the sliding rod is always fixed perpendicular to the surface of the fixing plate, and the glenosphere liner rotates with the universal ball head. The glenosphere head and the glenosphere liner produce relative displacement, which improves the flexibility of the shoulder joint prosthesis, reduces the wear of the glenosphere liner and the glenosphere head during contact and rotation, increases the service life, and improves the comfort of the patient during rehabilitation training.

[0019] By setting a telescopic component, the optimal force-bearing length of the prosthetic stem is calculated according to the remaining humeral length, and the hand-tightening ring is manually rotated. The hand-tightening ring drives the toothed disk to rotate, so that the bevel gear drives the bevel gear group to rotate through the transmission rod, thereby rotating the screw connected to the output end of the bevel gear group. Through the threaded engagement of the screw and the threaded block, the threaded block drives the stem to slide vertically downward on the inside of the fixing sleeve, thereby extending the stem, thereby improving the versatility of prosthetic installation, and can be installed for humeri of different lengths. The stem cannot provide continuous support for the glenosphere head, which prevents the stem from loosening during movement and causing the plastic liner and the glenosphere head to fall off, so that the various components of the prosthesis can be connected more tightly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable those skilled in the relevant art to make and use the invention.

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of an artificial shoulder joint prosthesis with high mobility;

[0022] Figure 2 The exploded view of the three-dimensional structure of an artificial shoulder joint prosthesis with high mobility;

[0023] Figure 3 A schematic diagram of the three-dimensional structure of the glenoid liner, the reverse shoulder humerus body and the fixation sleeve;

[0024] Figure 4 for Figure 3 A magnified view of the three-dimensional structure at A;

[0025] Figure 5 It is a schematic diagram of the three-dimensional structure of the angle component;

[0026] Figure 6 It is a cross-sectional view of the three-dimensional structure of the telescopic component;

[0027] Figure 7 for Figure 6 A magnified view of the three-dimensional structure at B;

[0028] Figure 8 A three-dimensional structural cross-sectional view of the assembly of the thread block, bone stem and fixation sleeve;

[0029] Fig. 9 It is a top view of the assembly relationship between the fixed sleeve, bevel gear set and screw;

[0030] Fig.10 It is a schematic diagram of the three-dimensional structure of the hand-tightening ring and the clamping block assembly;

[0031] Fig.11 It is a schematic diagram of the three-dimensional structure of the clamping block.

[0032] [Reference Signs]

[0033] 1. Glenoid head; 2. Shoulder pelvis back plate; 3. Fixing screw; 4. Glenoid liner; 5. Angle assembly; 51. Mounting shell; 52. Slide rail 1; 53. Slide rail 2; 54. Slide rod; 55. Universal ball head; 56. Fixing plate; 57. Anti-shoulder humeral body; 6. Telescopic assembly; 61. Hand-tightening ring; 62. Toothed disc; 63. Bevel gear; 64. Transmission rod; 65. Bevel gear set; 66. Screw; 67. Threaded block; 68. Bone handle; 69. Fixing sleeve; 610. Snap-in block.

[0034] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0035] The following is a detailed description of an artificial shoulder joint prosthesis with high mobility provided by the present invention in conjunction with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternatives to implement some known technologies; and the accompanying drawings are only for a more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0036] It should be noted that the references to "one embodiment", "embodiment", "exemplary embodiments", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0037] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0038] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” not only means “directly on” something, but also includes the meaning of being “on” something with intervening features or layers therebetween, and “on” or “over” not only means “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers therebetween.

[0039] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.

[0040] like Figures 1 to 3 As shown, an embodiment of the present invention provides an artificial shoulder joint prosthesis with a high range of motion, including a glenosphere head 1, a shoulder pelvis back plate 2 is provided on one side of the glenosphere head 1, fixing screws 3 are provided on the inner side of the shoulder pelvis back plate 2 at equal angles, a glenoid liner 4 is sleeved on the outer side of the glenosphere head 1, and also includes an angle component 5, which is installed on the outer side of the glenoid liner 4, and the angle component 5 is used to increase the movable angle of the glenoid liner 4, and a telescopic component 6 is installed at the tail of the angle component 5, and the telescopic component 6 is used to change the insertion length of the stem 68 in the humerus.

[0041] In this embodiment, the glenosphere head 1 and the glenoid liner 4 are made of titanium alloy material to improve the wear resistance of the glenosphere head 1 and the glenoid liner 4 and reduce wear. The fixing screws 3 are set in three groups to improve the structural installation stability. The angle between the fixing screws 3 and the central axis of the shoulder-pelvic back plate 2 is 30~50°.

[0042] like Figures 1 to 5As shown, the angle assembly 5 includes a mounting shell 51, which is mounted on the outside of the glenoid liner 4, and a slide rail 1 52 and a slide rail 2 53 are provided at the bottom of the mounting shell 51;

[0043] During use, when the joint moves, the glenosphere head 1 and the glenoid liner 4 are in contact and rotated, and the sliding rod 54 slides on the inner side of the slide rail 1 52 and the slide rail 2 53. Since the anti-shoulder humeral body 57 is connected with the hand-tightening ring 61 and the fixing sleeve 69, the sliding rod 54 is always fixed perpendicular to the surface of the fixing plate 56, and the glenoid liner 4 rotates following the universal ball head 55. The glenosphere head 1 and the glenoid liner 4 produce relative displacement. The two ends of the slide rail 1 52 and the slide rail 2 53 are respectively mounted on the rotating shaft outside the mounting shell 51, and can rotate on the rotating shaft outside the mounting shell 51. The slide rail 1 52 is located at the bottom of the slide rail 2 53. When the sliding rod 54 slides, when it can slide smoothly on the inner side of the slide rail 1 52, the sliding rod 5 The side wall of 4 contacts with the side wall of the second slide rail 53, and according to the sliding of the sliding rod 54 in the first slide rail 52, the side wall of the second slide rail 53 is pushed, so that the second slide rail 53 rotates on the rotating shaft outside the mounting shell 51. When the inner side of the second slide rail 53 can slide smoothly, the same operation is performed, and the reverse shoulder humerus body 57 is fixed in the medullary cavity. Therefore, during the above operation, the shoulder liner 4 sleeved on the outer side of the universal ball head 55 rotates following the rotation of the first slide rail 52 and the second slide rail 53. At the same time, when the arc surface of the shoulder liner 4 and the shoulder glenosphere head 1 contacts, the contact inclination angle can be increased, and the range of activity of the shoulder liner 4 and the shoulder glenosphere head 1 in the contact activity is increased, thereby improving the flexibility of the shoulder joint prosthesis and reducing the wear of the shoulder liner 4 and the shoulder glenosphere head 1 in the contact rotation.

[0044] like Figures 1 to 5 As shown, the slide rail 1 52 and the slide rail 2 53 rotate at the ends of the mounting shell 51, and a sliding rod 54 is provided on the inner side of the slide rail 1 52 and the slide rail 2 53 for sliding movement. One end of the sliding rod 54 is connected to a universal ball head 55. The two ends of the slide rail 1 52 and the slide rail 2 53 are respectively mounted on the rotating shaft on the outer side of the mounting shell 51, and can rotate on the rotating shaft on the outer side of the mounting shell 51. The slide rail 1 52 is located at the bottom of the slide rail 2 53. When the sliding rod 54 slides, when it can slide smoothly on the inner side of the slide rail 1 52, the side wall of the sliding rod 54 contacts with the side wall of the slide rail 2 53. According to the sliding of the sliding rod 54 in the slide rail 1 52, the side wall of the slide rail 2 53 is pushed, so that the slide rail 2 53 follows and rotates on the rotating shaft on the outer side of the mounting shell 51. The same applies when it can slide smoothly on the inner side of the slide rail 2 53.

[0045] like Figures 1 to 5As shown, the tail end of the universal ball head 55 is installed on the bottom surface of the glenoid liner 4, the bottom surface of the sliding rod 54 is connected to a fixing plate 56, the top of the fixing plate 56 is connected to an anti-shoulder humeral body 57, the sliding rod 54 is nested in the inner side of the slide rail 1 52 and the slide rail 2 53, and can slide, the universal ball head 55 is nested in the bottom surface of the glenoid liner 4, and the universal ball head 55 can move on the bottom surface, the sliding rod 54 is fixedly mounted on the outer side wall of the universal ball head 55, and the fixing plate 56 is fixed to the end of the anti-shoulder humeral body 57 by bolts.

[0046] In this embodiment, a tantalum coating is provided on the surface of the mounting shell 51 to improve the contact effect between the prosthetic structure and the human body and promote bone growth. The slide rail 1 52 and the slide rail 2 53 are arranged in an arc shape to improve the rotation stability of the sliding rod 54. The slide rail 1 52 is located at the bottom of the slide rail 2 53. The slide rail 1 52 and the slide rail 2 53 are arranged in a cross shape. The sliding rod 54 is nested in the inner side of the slide rail 1 52 and the slide rail 2 53 at the same time.

[0047] like Figures 1 to 3 and Figures 6 to 9 As shown, the telescopic assembly 6 includes a hand-tightening ring 61, which is installed at the bottom of the anti-shoulder humeral body 57, and a toothed disc 62 is nested and installed inside the hand-tightening ring 61;

[0048] The operator then cuts different thicknesses and inclinations according to the different conditions of the humeral lesions, cuts the diseased bone part on one side of the humeral head, fills the humeral medullary cavity with bone cement, calculates the optimal force-bearing length of the prosthetic stem 68 according to the remaining humeral length, manually rotates the hand-tightening ring 61, and the clamping block 610 follows the rotation of the hand-tightening ring 61. The clamping block 610 continues to slide into the outer groove of the hand-tightening ring 61 to fix the clamping block 610 to prevent the hand-tightening ring 61 from loosening. The hand-tightening ring 61 drives the toothed disc 62 to rotate, so that the bevel gear 63 drives the bevel gear set 66 through the transmission rod 64. 5 rotates, thereby rotating the screw rod 66 connected to the output end of the bevel gear set 65, and through the threaded engagement of the screw rod 66 and the threaded block 67, the threaded block 67 drives the bone stem 68 to slide vertically downward inside the fixing sleeve 69, so that the bone stem 68 is extended, thereby improving the versatility of prosthesis installation, and can be installed for humerus of different lengths. The bone stem 68 and the fixing sleeve 69 are inserted as a whole into the humeral medullary cavity filled with bone cement until the installation shell 51 is exposed at the end of the humeral head, and then the glenoid liner 4 and the glenosphere head 1 are clamped together to complete the overall implantation and installation of the prosthesis.

[0049] like Figures 1 to 3 and Figures 6 to 9 As shown, the toothed disc 62 and the bevel gear 63 are meshed with each other, and the bevel gear 63 rotates at the bottom of the anti-shoulder humeral body 57. The tail end of the bevel gear 63 is connected to a transmission rod 64, and the tail end of the transmission rod 64 is connected to a bevel gear set 65, and the output end of the bevel gear set 65 is connected to a screw rod 66.

[0050] In this embodiment, the tail of the clamping block 610 is manually pressed to make the clamping part of the clamping block 610 disengage from the outer groove of the hand-tightening ring 61, and the hand-tightening ring 61 is manually rotated to make the hand-tightening ring 61 drive the toothed disc 62 to rotate, so that the bevel gear 63 drives the bevel gear set 65 to rotate through the transmission rod 64, so that the screw rod 66 connected to the output end of the bevel gear set 65 rotates, and the screw rod 66 and the threaded block 67 are engaged with each other, so that the threaded block 67 drives the bone handle 68 to move vertically downward on the inner side of the fixing sleeve 69. The clamping block 610 is then loosened. Since the clamping block 610 is connected to the side wall bracket of the fixing sleeve 69 by a torsion spring, when the rear end of the clamping block 610 is not subjected to force, the tooth block portion at the front end of the clamping block 610 rotates toward the outer groove direction of the hand-tightening ring 61, so that the tooth block portion at the front end of the clamping block 610 is clamped in the outer groove of the hand-tightening ring 61 to prevent the hand-tightening ring 61 from loosening in a stationary state.

[0051] like Figures 1 to 3 and Figures 6 to 9 As shown, the outer side of the screw rod 66 is threadedly connected with a thread block 67, the outer side of the thread block 67 is sleeved with a bone handle 68, the outer side of the bone handle 68 is sleeved with a fixing sleeve 69, and one side of the hand-tightening ring 61 is provided with a clamping block 610, and the clamping block 610 is connected to the side wall bracket of the fixing sleeve 69 through a torsion spring. The thread block 67 is fixedly nested in the inner side of the bone handle 68, as shown in FIG. Figure 6 As shown, the threaded block 67 slides on the inner side of the bone handle 68 through the limiting block on the inner side of the fixing sleeve 69, as shown in FIG. Fig.10 and 11 As shown, the hand-tightening ring 61 rotates at the bottom of the anti-shoulder humeral body 57 and in the slide groove of the fixing sleeve 69 , the hand-tightening ring 61 and the toothed disc 62 are fixedly connected to each other, and a torsion spring is sleeved on the rotating shaft of the clamping block 610 .

[0052] In this embodiment, the hand-tightening ring 61 rotates at the bottom of the anti-shoulder humeral body 57 to prevent the hand-tightening ring 61 from getting stuck. Figure 7 As shown, the transmission rod 64 is installed on the inner wall bracket of the fixing sleeve 69 and rotates on the inner wall bracket of the fixing sleeve 69. The screw 66 is arranged perpendicular to the bottom surface of the hand-tightening ring 61, and the bone handle 68 slides inside the fixing sleeve 69 to improve the telescopic stability of the structure.

[0053] The working process of the technical solution of the present invention is as follows:

[0054] First, the operator cuts the bone end surface on one side of the shoulder joint, drills the cut position, installs the shoulder pelvis back plate 2 therein, screws the fixing screw 3 through the installation hole of the shoulder pelvis back plate 2 to fix the shoulder pelvis back plate 2 in the bone on one side of the shoulder joint, installs the glenosphere head 1 on the top of the shoulder pelvis back plate 2 to complete the installation of the prosthesis on one side of the shoulder joint, and then the operator cuts different thicknesses and inclinations according to different humeral lesions, cuts the diseased bone part on one side of the humeral head, fills bone cement in the humeral medullary cavity, calculates the optimal force-bearing length of the prosthetic bone stem 68 according to the remaining humeral length, manually presses the tail of the clamping block 610 to make the clamping part of the clamping block 610 disengage from the outer groove of the hand-tightening ring 61, and manually rotates the hand-tightening ring 61 to make the hand-tightening ring 61 drive the toothed disc 62 to rotate, so that the bevel gear 63 drives the bevel gear set 65 to rotate through the transmission rod 64, so that the bevel gear set 65 outputs The screw rod 66 connected to the end is rotated, and the threaded engagement of the screw rod 66 and the threaded block 67 makes the threaded block 67 drive the bone stem 68 to slide vertically downward inside the fixing sleeve 69, so that the bone stem 68 is extended, which improves the versatility of the prosthesis installation and can be installed for humeri of different lengths. Then, the tail of the clamping block 610 is loosened. Since the clamping block 610 is connected to the side wall bracket of the fixing sleeve 69 through a torsion spring, when the tail end of the clamping block 610 is not subjected to force, the front tooth block part of the clamping block 610 rotates toward the outer groove direction of the hand-tightening ring 61, so that the front tooth block part of the clamping block 610 is clamped inside the outer groove of the hand-tightening ring 61 to prevent the hand-tightening ring 61 from loosening in a static state. The operator inserts the bone stem 68 and the fixing sleeve 69 as a whole into the humeral medullary cavity filled with bone cement until the installation shell 51 is exposed at the end of the humeral head, and then the glenosphere liner 4 and the glenosphere head 1 are clamped to each other to complete the overall implantation and installation of the prosthesis.

[0055] During joint movement, when the glenosphere head 1 and the glenoid liner 4 are in contact and rotate, the sliding rod 54 slides on the inner side of the slide rail 1 52 and the slide rail 2 53. Since the anti-shoulder humeral body 57 is connected with the hand-tightening ring 61 and the fixing sleeve 69, the sliding rod 54 is always fixed perpendicular to the surface of the fixing plate 56, and the glenoid liner 4 rotates following the universal ball head 55. The glenosphere head 1 and the glenoid liner 4 produce relative displacement. By increasing the movable angle of the glenoid liner 4, the glenoid liner 4 has multiple angle adjustment ranges when it is in contact and rotates with the glenosphere head 1, thereby increasing the movable range of the glenoid liner 4 in the contact and rotation with the glenosphere head 1, thereby improving the flexibility of the shoulder joint prosthesis and reducing the wear of the glenoid liner 4 in the contact and rotation with the glenosphere head 1.

[0056] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0057] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An artificial shoulder joint prosthesis with high mobility, characterized in that: It comprises a glenosphere head, a shoulder pelvis back plate is arranged on one side of the shoulder pelvis head, fixing screws are arranged at equal angles on the inner side of the shoulder pelvis back plate, and a shoulder glenosphere liner is sleeved on the outer side of the shoulder glenosphere head; Also included is an angle assembly, the angle assembly is mounted on the outside of the glenoid liner, the angle assembly is used to increase the movable angle of the glenoid liner; A telescopic assembly, the telescopic assembly is installed at the tail of the angle assembly, and the telescopic assembly is used to change the insertion length of the stem in the humerus; The angle assembly comprises a mounting shell, the mounting shell is mounted on the outside of the glenoid liner, and a first slide rail and a second slide rail are arranged at the bottom of the mounting shell; The slide rail 1 and the slide rail 2 rotate at the end of the mounting shell, and a slide rod is slidably arranged inside the slide rail 1 and the slide rail 2, and one end of the slide rod is connected to a universal ball head; The tail end of the universal ball head is installed on the bottom surface of the glenoid liner, the bottom surface of the sliding rod is connected to a fixing plate, and the top of the fixing plate is connected to the anti-shoulder humerus body; The slide rail 1 and the slide rail 2 are arranged in an arc shape, the slide rail 1 is located at the bottom of the slide rail 2, the slide rail 1 and the slide rail 2 are arranged in a cross shape, and the sliding rod is nested inside the slide rail 1 and the slide rail 2 at the same time.

2. The artificial shoulder joint prosthesis with high mobility according to claim 1, characterized in that: The glenosphere head and the glenosphere liner are made of titanium alloy material, the fixing screws are arranged in three groups, and the angle between the fixing screws and the central axis of the shoulder pelvis back plate is 30-50 degrees.

3. The artificial shoulder joint prosthesis with high mobility according to claim 2, characterized in that: The surface of the mounting shell is provided with a tantalum coating.

4. The artificial shoulder joint prosthesis with high mobility according to claim 3, characterized in that: The telescopic assembly comprises a hand-tightening ring, which is installed at the bottom of the anti-scapulohumeral body, and a toothed disc is nested and installed inside the hand-tightening ring; The toothed disc and the bevel gear are meshed with each other, the bevel gear rotates at the bottom of the anti-shoulder humeral body, the tail end of the bevel gear is connected to a transmission rod, the tail end of the transmission rod is connected to a bevel gear set, and the output end of the bevel gear set is connected to a screw; The outer side of the screw rod is threadedly connected with a thread block, a bone handle is sleeved on the outer side of the thread block, a fixing sleeve is sleeved on the outer side of the bone handle, a clamping block is arranged on one side of the hand-tightening ring, and the clamping block is connected to the side wall of the fixing sleeve through a torsion spring; The hand-tightening ring rotates at the bottom of the humeral body, the transmission rod is installed on the inner wall of the fixing sleeve, the screw rod is arranged perpendicular to the bottom surface of the hand-tightening ring, and the bone handle slides inside the fixing sleeve.

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