A highly adaptable shoulder joint prosthesis made of carbon fiber modified polyetheretherketone

Abstract

The present invention provides a highly adaptable carbon fiber modified polyetheretherketone shoulder joint prosthesis, belonging to the technical field of medical devices. It includes a tantalum metal glenoid backplate, one end of the tantalum metal glenoid backplate is provided with a backplate fixing screw, the other end of the tantalum metal glenoid backplate is provided with a glenoid ball head, the surface of one end of the glenoid ball head is in contact with a glenoid liner, and it further includes a humeral stem; an adjusting component, the adjusting component is arranged at the top of the humeral stem, and the adjusting component is used for adjusting the angle between the glenoid liner and the humeral stem; an auxiliary component, the auxiliary component is arranged at the top of the adjusting component, and the auxiliary component is used for secondary adjustment of the glenoid liner. By setting the adjusting component, the installation adaptability of the glenoid ball head and the glenoid liner to different shoulder joint cutting surfaces is improved, and by setting the auxiliary component, the matching degree between the glenoid liner and the glenoid ball head is improved through secondary auxiliary adjustment of the glenoid liner.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly relates to a shoulder joint prosthesis made of highly adaptable carbon fiber modified polyetheretherketone material. Background Art

[0002] The distal humerus forms the elbow joint with the radius and ulna, which plays a very important role in the physiological functions of the human body. To avoid amputation caused by malignant diseases or comminuted fractures of the humerus, distal humerus prosthesis replacement is often used in the treatment of such patients. Since the elbow joint is frequently used and easily stressed in daily life, in practice, there are relatively high requirements for the fitting, stability, biocompatibility, strength, etc. between the distal humerus prosthesis and the radius and ulna.

[0003] When the existing shoulder joint prosthesis is implanted at the shoulder joint of a patient, cutting needs to be performed at the shoulder joint of the patient before installing the shoulder joint prosthesis. Since the necrosis conditions of the shoulder joints of different patients are different, different cutting degrees result in different angles of the cutting surfaces of the shoulder joints of different patients. When installing the shoulder joint prosthesis, the angle of the glenoid ball head needs to be adjusted. However, the angle of the glenoid ball head in the existing shoulder joint prosthesis is relatively fixed and it is difficult to perform real-time adjustment during installation, so the installation adaptability for different shoulder joint necrosis conditions is poor. Therefore, the present invention provides a shoulder joint prosthesis made of highly adaptable carbon fiber modified polyetheretherketone material to meet the requirements. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a shoulder joint prosthesis made of highly adaptable carbon fiber modified polyetheretherketone material to solve the problem that when the existing shoulder joint prosthesis is implanted at the shoulder joint of a patient, cutting needs to be performed at the shoulder joint of the patient before installing the shoulder joint prosthesis. Since the necrosis conditions of the shoulder joints of different patients are different, different cutting degrees result in different angles of the cutting surfaces of the shoulder joints of different patients. When installing the shoulder joint prosthesis, the angle of the glenoid ball head needs to be adjusted. However, the angle of the glenoid ball head in the existing shoulder joint prosthesis is relatively fixed and it is difficult to perform real-time adjustment during installation, so the installation adaptability for different shoulder joint necrosis conditions is poor.

[0005] To solve the above technical problem, the present invention provides the following technical solutions:

[0006] A highly adaptable shoulder joint prosthesis made of carbon fiber modified polyetheretherketone, comprising a tantalum metal glenoid back plate, one end of the tantalum metal glenoid back plate is provided with a back plate fixing screw, the other end of the tantalum metal glenoid back plate is provided with a glenosphere head, one end of the glenosphere head is in contact with a glenoid liner, and also comprises a humeral stem; an adjustment component, the top of the humeral stem is provided with an adjustment component, the adjustment component is used to adjust the angle between the glenoid liner and the humeral stem; an auxiliary component, the top of the adjustment component is provided with an auxiliary component, the auxiliary component is used to perform secondary adjustment on the glenoid liner; the humeral stem is connected to the glenoid liner via the adjustment component and the auxiliary component.

[0007] Optionally, the adjustment component includes an installation cavity, which is fixedly installed on the top of the humeral stem. The material of the installation cavity is set to be a corrosion-resistant material, and the main material of the corrosion-resistant material is tantalum metal. The glenosphere head, glenosphere liner and humeral stem are made of carbon fiber modified polyetheretherketone (CFR-PEEK) material, and a tantalum coating is sprayed on the surface.

[0008] Optionally, a flat gear is provided at the bottom end of the inner wall of the installation cavity, a rotating rod is provided at one end of the flat gear, one end of the rotating rod is rotatably installed on the inner wall of one side of the installation cavity, and the rotating rod passes through the inner wall of the installation cavity and extends to the outside of the installation cavity.

[0009] Optionally, a gear ring is meshed at the top of the flat gear, one end of the gear ring is arranged on one side of the inner wall of the installation cavity, a rotating seat is arranged at the top of the gear ring, the bottom end cross-sectional structure of the rotating seat is circular, and the top end cross-sectional structure of the rotating seat is a "匚"-shaped structure, the material of the rotating seat is set to continuous carbon fiber reinforced polyetheretherketone (PEEK) high-performance thermoplastic composite material, a protective cover is set at the bottom edge of the rotating seat, the bottom end surface of the protective cover is in contact with the inner wall of the installation cavity, the material of the rotating seat and the protective cover is set to corrosion-resistant material, and the main material of the corrosion-resistant material is tantalum metal.

[0010] Optionally, a clamping column is provided on one side of the bottom end of the gear ring, the cross section of the clamping column is set to be a pentagon, a limiting rod 1 is sleeved on the outer surface of one end of the clamping column, and one end of the limiting rod 1 is set on the inner wall of the installation cavity.

[0011] Optionally, a bolt 1 is threadedly provided on one side of the outer surface of the installation cavity, and one end of the bolt 1 is connected to one end of the clamping column.

[0012] Optionally, the auxiliary component includes a screw, one end of which is rotatably mounted on the inner wall of the top end of the rotating seat, the other end of which is nested on the inner wall of the top end of the rotating seat, and one end of the screw is fixedly mounted with a rotating disk.

[0013] Optionally, a sliding rod is sleeved on the outer surface of the screw rod. A second limiting rod is sleeved on the top end of the sliding rod. Both ends of the second limiting rod are fixedly installed on the top end of the rotating seat. A connecting rod is arranged at the bottom end of the sliding rod. The outer surface of the connecting rod is in contact with the opening on one side of the rotating seat. A first stud is installed at one end of the connecting rod extending out of the opening on one side of the rotating seat. A first nut is sleeved on the outer surface of the first stud. One end of the first nut is in contact with the surface on one side of the rotating seat.

[0014] Optionally, an installation bracket is sleeved on the outer surface of the upper part of the sliding rod. One end of the installation bracket is connected to the bottom end of the glenoid liner. An elastic telescopic rod is arranged at the other end of the installation bracket.

[0015] Optionally, a push plate is arranged at the other end of the elastic telescopic rod. The other end of the push plate is in contact with one side of the inner wall of the rotating seat. A second stud is fixedly installed at one end of the push plate. The other end of the second stud penetrates through the inner wall of the rotating seat and extends to the outside of the rotating seat. A second nut is sleeved on the outer surface of the end of the second stud extending to the outside of the rotating seat.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects:

[0017] In the above solution, by setting the adjustment component and utilizing the linkage between the rotating rod, the spur gear and the toothed ring, when installing the shoulder joint prosthesis, the angle of the installation cavity can be adjusted in real time according to the cutting degree at the patient's shoulder joint. The angles of the auxiliary component and the glenoid liner are adjusted through the installation cavity to ensure the contact degree between the glenoid liner and the glenoid ball head, improve the installation adaptability of the glenoid ball head and the glenoid liner to different cutting surfaces of the shoulder joint. At the same time, in cooperation with the linkage between the toothed ring, the clamping post and the first bolt, after adjusting the rotation angle of the toothed ring, through the special cooperation between the toothed ring and the clamping post, the rotation angle of the toothed ring is limited, so as to ensure the stability of the glenoid liner after adjusting the angle and avoid the dislocation of the shoulder joint prosthesis caused by the change of the glenoid liner angle during subsequent use.

[0018] By setting the auxiliary component and utilizing the cooperation between the screw rod, the sliding rod and the second limiting rod, and at the same time in cooperation with the sliding fit between the sliding rod and the installation bracket, the two-way adjustment of the extending length and height of the glenoid liner is realized. At the same time, in cooperation with the adjustment effect of the adjustment component on the angle of the glenoid liner, after the angle adjustment of the glenoid liner is completed, through the sliding fit between the sliding rod and the installation bracket, the extending length and height of the glenoid liner are adjusted secondly to further ensure the contact degree between the glenoid liner and the glenoid ball head, improve the matching degree between the glenoid liner and the glenoid ball head. Through the secondary auxiliary adjustment of the glenoid liner, the installation adaptability of the glenoid ball head and the glenoid liner to different cutting surfaces of the shoulder joint is further ensured. At the same time, in cooperation with the connection effect between the first stud and the first nut, and under the connection action of the second stud and the second nut, the installation stability of the glenoid liner after adjusting the extending length and height is ensured. Brief Description of the Drawings

[0019] The drawings incorporated herein and constituting a part of the specification illustrate embodiments of the present invention and, together with the specification, are further used to explain the principles of the present invention and enable those skilled in the relevant art to implement and use the present invention.

[0020] Figure 1 Schematic diagram of a shoulder joint prosthesis made of highly adaptable carbon fiber modified polyetheretherketone material;

[0021] Figure 2 Schematic diagram of the partial sectional structure of a shoulder joint prosthesis made of highly adaptable carbon fiber modified polyetheretherketone material;

[0022] Figure 3 Schematic diagram of the partial component structure of a shoulder joint prosthesis made of highly adaptable carbon fiber modified polyetheretherketone material;

[0023] Figure 4 Schematic diagram of the structure of a rotating seat;

[0024] Figure 5 Schematic diagram of the structure of an adjusting component;

[0025] Figure 6 Schematic diagram of the partial component structure of an adjusting component;

[0026] Figure 7 Schematic diagram of the partial sectional structure of an adjusting component;

[0027] Figure 8 Schematic diagram of the structure of an auxiliary component;

[0028] Figure 9 Schematic diagram of the partial component structure of an auxiliary component.

[0029] Reference Numerals:

[0030] 1, tantalum metal glenoid backplate; 2, backplate fixing screw; 3, glenoid ball head; 4, glenoid lining; 5, humeral stem; 6, adjusting component; 61, installation cavity; 62, spur gear; 63, rotating rod; 64, toothed ring; 65, rotating seat; 66, protective cover; 67, clamping post; 68, first limiting rod; 69, first bolt; 7, auxiliary component; 71, screw rod; 72, rotating disc; 73, sliding rod; 74, second limiting rod; 741, connecting rod; 742, first stud; 743, first nut; 75, mounting bracket; 76, elastic telescopic rod; 77, push plate; 78, second stud; 79, second nut.

[0031] As shown in the figure, in order to clearly implement the structure of the embodiments 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 this specific structure, device, and environment. According to specific needs, those of ordinary skill in the art can adjust or modify these devices and environments. Detailed implementation manners

[0032] The following will describe in detail a highly adaptable carbon fiber modified polyetheretherketone material shoulder joint prosthesis provided by the present invention with reference to the accompanying drawings and specific embodiments. At the same time, it should be noted here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments. For some well-known technologies, those skilled in the art can also implement them in other alternative ways; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0033] Generally, terms can be understood, at least in part, from their use in context. For example, at least in part depending on the context, the term "one or more" as used herein can be used to describe any feature, structure, or property in a singular sense, or can be used to describe a combination of features, structures, or properties in a plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey a set of exclusive factors, but rather, at least in part depending on the context, can allow for the existence of other factors that are not necessarily explicitly described.

[0034] It can be understood that the meanings of "on...", "above...", and "over..." in the present invention should be interpreted in the broadest manner, such that "on..." not only means "directly on" something, but also includes the meaning of being "on" something with intervening features or layers therebetween, and "above..." or "over..." not only means "above" or "over" something, but also can include the meaning of being "above" or "over" something with no intervening features or layers therebetween.

[0035] In addition, spatial relative terms such as "under...", "below...", "lower", "above...", "upper", etc. are used herein for convenience of description to describe the relationship between one element or feature and another or more elements or features, as shown in the drawings. The spatial relative terms are intended to cover different orientations in the use or operation of the device in addition to the orientation depicted in the drawings. The device can be oriented in other ways, and the spatial relative descriptors used herein can be similarly interpreted accordingly.

[0036] Such as Figures 1 to 9As shown in the figure, an embodiment of the present invention provides a highly adaptable carbon fiber modified polyetheretherketone shoulder joint prosthesis, which includes a tantalum metal glenoid backplate 1. One end of the tantalum metal glenoid backplate 1 is provided with a backplate fixing screw 2, and the other end of the tantalum metal glenoid backplate 1 is provided with a glenoid ball head 3. The surface of one end of the glenoid ball head 3 is in contact with a glenoid liner 4, and it also includes a humeral stem 5; an adjustment assembly 6 is provided at the top of the humeral stem 5, and the adjustment assembly 6 is used to adjust the angle between the glenoid liner 4 and the humeral stem 5; an auxiliary assembly 7 is provided at the top of the adjustment assembly 6, and the auxiliary assembly 7 is used to perform secondary adjustment on the glenoid liner 4; the humeral stem 5 is connected to the glenoid liner 4 through the adjustment assembly 6 and the auxiliary assembly 7. By setting the adjustment assembly 6, the angle between the auxiliary assembly 7 and the glenoid liner 4 is adjusted to ensure the contact degree between the glenoid liner 4 and the glenoid ball head 3, improve the installation adaptability of the glenoid ball head 3 and the glenoid liner 4 to different shoulder joint cutting surfaces, and at the same time ensure the stability of the glenoid liner 4 after the angle is adjusted, avoiding dislocation of the shoulder joint prosthesis caused by the angle change of the glenoid liner 4 during subsequent use. By setting the auxiliary assembly 7, the extension length and height of the glenoid liner 4 are secondarily adjusted to further ensure the contact degree between the glenoid liner 4 and the glenoid ball head 3. Through the secondary auxiliary adjustment of the glenoid liner 4, the installation adaptability of the glenoid ball head 3 and the glenoid liner 4 to different shoulder joint cutting surfaces is further ensured. The glenoid ball head 3, the glenoid liner 4 and the humeral stem 5 are prepared from carbon fiber modified polyetheretherketone (CFR-PEEK) material, making the knee joint prosthesis have the advantages of light weight, good mechanical properties, good light transmittance, and an elastic modulus closer to that of bone, reducing the load and wear of the surrounding bone mass, effectively avoiding the "stress shielding" effect, reducing the risk of secondary fracture and bone loss, and greatly improving the service life of the knee joint prosthesis;

[0037] And a tantalum coating is sprayed on the surface, enhancing the corrosion resistance and biocompatibility of the prosthesis, with high strength, wear resistance, and stronger adhesion to human cells, creating good conditions for the ingrowth and proliferation of bone cells, achieving the effects of long-term stability and extended service life.

[0038] Such as Figures 4 to 7As shown, the adjusting component 6 includes an installation cavity 61, which is fixedly installed at the top end of the humeral stem 5. The material of the installation cavity 61 is set as a corrosion-resistant material, and the main material of the corrosion-resistant material is tantalum metal. At the bottom end of the inner wall of the installation cavity 61, there is a spur gear 62. One end of the spur gear 62 is provided with a rotating rod 63. One end of the rotating rod 63 is rotatably installed on one side inner wall of the installation cavity 61, and the rotating rod 63 penetrates through the inner wall of the installation cavity 61 and extends to the outside of the installation cavity 61. At the top of the spur gear 62, there is a toothed ring 64 engaged with it. One end of the toothed ring 64 is arranged on one side of the inner wall of the installation cavity 61. At the top of the toothed ring 64, there is a rotating seat 65. The cross-sectional structure of the bottom end of the rotating seat 65 is circular, and the cross-sectional structure of the top end of the rotating seat 65 is a "C" - shaped structure. And the material of the rotating seat 65 is set as a continuous carbon fiber reinforced polyether ether ketone (PEEK) high-performance thermoplastic composite material. The strength of this material exceeds that of titanium alloy, and it has extremely high wear resistance, corrosion resistance and fracture resistance. It is more heat-resistant and has higher strength than traditional carbon fiber reinforced thermosetting composite materials, improving the service performance of the rotating seat 65.

[0039] At the edge of the bottom end of the rotating seat 65, there is a protective cover 66. The bottom surface of the protective cover 66 is in contact with the inner wall of the installation cavity 61. The materials of the rotating seat 65 and the protective cover 66 are set as corrosion-resistant materials, and the main material of the corrosion-resistant materials is tantalum metal. On one side of the bottom end of the toothed ring 64, there is a clamping post 67. The cross-section of the clamping post 67 is pentagonal. One end of the outer surface of the clamping post 67 is sleeved with a first limiting rod 68. One end of the first limiting rod 68 is arranged on the inner wall of the installation cavity 61. On one side of the outer surface of the installation cavity 61, there is a first bolt 69 threadedly arranged. One end of the first bolt 69 is connected to one end of the clamping post 67.

[0040] In this embodiment, the medical staff first observe the bone mass condition of the patient's shoulder joint and measure the angle between the shoulder joint prostheses. Subsequently, a cutting tool is used to cut the proximal bone part of the patient's shoulder joint to form a cutting surface for installing the shoulder joint prosthesis. Then, the medical staff fix the tantalum metal glenoid backplate 1 to the patient's shoulder joint section through the backplate fixing screw 2, so that the glenoid ball head 3 is fixed to the proximal part of the patient's shoulder joint through the tantalum metal glenoid backplate 1. Subsequently, according to the contact condition between the glenoid ball head 3 and the glenoid liner 4, the rotating rod 63 is rotated by rotating the groove at one end of the rotating rod 63. While the rotating rod 63 rotates, it drives the spur gear 62 to rotate synchronously. While the spur gear 62 rotates, it meshes with the toothed ring 64 to rotate. While the toothed ring 64 rotates, it drives the rotating seat 65 to rotate synchronously. The rotating seat 65 drives the glenoid liner 4 to rotate synchronously through the auxiliary component 7 to change the angle of the glenoid liner 4. When the angle adjustment of the glenoid liner 4 is completed, the medical staff use a tool to turn the bolt 69. Under the action of the thread, the bolt 69 rotates and ejects on one side of the installation cavity 61. When the bolt 69 rotates and ejects, one end of it pushes the clamping column 67, so that the clamping column 67 slides on the inner wall of the limiting rod 68. While the clamping column 67 slides, the outer surface of the clamping column 67 gradually approaches and contacts the bottom surface of the toothed ring 64. When the medical staff turn the bolt 69 in place with a tool, one end of the bolt 69 pushes the clamping column 67 to reach below the bottom end of the toothed ring 64, realizing the limiting effect of the clamping column 67 on the toothed ring 64.

[0041] By setting the linkage between the rotating rod 63, the spur gear 62 and the toothed ring 64, when installing the shoulder joint prosthesis, the angle of the installation cavity 61 can be adjusted in real time according to the cutting degree at the patient's shoulder joint. The angles of the auxiliary component 7 and the glenoid liner 4 are adjusted through the installation cavity 61 to ensure the contact degree between the glenoid liner 4 and the glenoid ball head 3, improve the installation adaptability of the glenoid ball head 3 and the glenoid liner 4 to different shoulder joint cutting surfaces. At the same time, in cooperation with the linkage between the toothed ring 64, the clamping column 67 and the bolt 69, after adjusting the rotation angle of the toothed ring 64, through the special cooperation between the toothed ring 64 and the clamping column 67, the rotation angle of the toothed ring 64 is limited, so as to ensure the stability of the glenoid liner 4 after adjusting the angle and avoid dislocation of the shoulder joint prosthesis caused by the angle change of the glenoid liner 4 during subsequent use.

[0042] Such as Figures 8 to 9As shown, the auxiliary component 7 includes a screw rod 71. One end of the screw rod 71 is rotatably installed on the inner wall of the top end of the rotating seat 65, and the other end of the screw rod 71 is nested on the inner wall of the top end of the rotating seat 65. A rotating disc 72 is fixedly installed at one end of the screw rod 71. A sliding rod 73 is sleeved on the outer surface of the screw rod 71. A second limiting rod 74 is sleeved on the top end of the sliding rod 73. Both ends of the second limiting rod 74 are fixedly installed on the top end of the rotating seat 65. A connecting rod 741 is arranged at the bottom end of the sliding rod 73. The outer surface of the connecting rod 741 is in contact with the opening on one side of the rotating seat 65. One end of the connecting rod 741 extending out of the opening on one side of the rotating seat 65 is installed with a first stud 742. A first nut 743 is sleeved on the outer surface of the first stud 742. One end of the first nut 743 is in contact with the side surface of the rotating seat 65. An installation bracket 75 is sleeved on the upper outer surface of the sliding rod 73. One end of the installation bracket 75 is connected to the bottom end of the glenoid liner 4. The other end of the installation bracket 75 is provided with an elastic telescopic rod 76. The other end of the elastic telescopic rod 76 is provided with a push plate 77. The other end of the push plate 77 is in contact with one side of the inner wall of the rotating seat 65. A second stud 78 is fixedly installed at one end of the push plate 77. The other end of the second stud 78 penetrates through the inner wall of the rotating seat 65 and extends to the outside of the rotating seat 65. A second nut 79 is sleeved on the outer surface of the end of the second stud 78 extending to the outside of the rotating seat 65.

[0043] In this embodiment, when the angle of the glenoid liner 4 is adjusted, the medical staff rotates the rotating disc 72. While the rotating disc 72 rotates, it drives the screw rod 71 to rotate synchronously, so that the sliding rod 73 sleeved on the outer surface of the screw rod 71 slides along the direction of the second limiting rod 74. At the same time, under the elastic action of the elastic telescopic rod 76, one end of the push plate 77 contacts one side of the inner wall of the rotating seat 65. While the sliding rod 73 slides, it drives the installation bracket 75 to slide synchronously, as Figure 8 shown. Since the bottom of the glenoid liner 4 is welded to one end of the installation bracket 75, when the installation bracket 75 slides, one end of the installation bracket 75 drives the glenoid liner 4 to slide along the top end direction of the rotating seat 65. While the glenoid liner 4 slides, the whole moves away from the rotating seat 65. Similarly, when the medical staff rotates the rotating disc 72 in the reverse direction, the rotating disc 72 drives the screw rod 71 to rotate in the reverse direction, so that while the sliding rod 73 slides in the reverse direction, it drives the installation bracket 75 to slide synchronously in the reverse direction, making the glenoid liner 4 approach the rotating seat 65, thereby realizing the adjustment of the extending length of the glenoid liner 4. While the sliding rod 73 slides, it drives the connecting rod 741 to slide synchronously. While the connecting rod 741 slides, it drives the first stud 742 to slide along the opening on one side of the rotating seat 65. When the sliding rod 73 slides in place, the medical staff screws the first nut 743 on the outer surface of the first stud 742, so that the first nut 743 closely adheres to one side of the rotating seat 65, realizing the lateral limiting effect on the sliding rod 73. When the extending length of the glenoid liner 4 is adjusted in place, the medical staff pushes the glenoid liner 4 downward, as Figure 8As shown, since the bottom of the glenoid liner 4 is welded to one end of the mounting bracket 75, when the glenoid liner 4 slides downward, it drives the mounting bracket 75 to slide downward synchronously. At the same time, since the first stud 742 is closely attached to one side of the rotating seat 65, the lateral sliding of the slide bar 73 has been limited. At this time, the slide bar 73 limits the vertical sliding of the mounting bracket 75. When the mounting bracket 75 slides downward, it slides along the direction of the slide bar 73, thereby realizing the adjustment of the height position of the glenoid liner 4. Under the sliding action of the mounting bracket 75, the mounting bracket 75 drives the push plate 77 to slide along the groove on one side of the rotating seat 65 through the elastic telescopic rod 76 at one end. When the height position of the glenoid liner 4 is adjusted in place, the medical staff screws the second nut 79 onto the outer surface of the second stud 78 at one end of the push plate 77. Through the cooperation between the second nut 79, the second stud 78 and the push plate 77, the height position of the mounting bracket 75 is limited, and the limit of the adjusted height of the glenoid liner 4 is completed. Subsequently, the medical staff inserts the humeral stem 5 into the patient's humeral medullary cavity and fills the patient's humeral medullary cavity with bone cement. After waiting for the bone cement to completely harden, the overall installation of the shoulder joint prosthesis is completed.

[0044] By setting the cooperation between the screw rod 71, the slide bar 73 and the second limiting rod 74, and at the same time cooperating with the sliding fit between the slide bar 73 and the mounting bracket 75, the two-way adjustment of the extension length and height of the glenoid liner 4 is realized. At the same time, in cooperation with the adjustment effect of the adjusting assembly 6 on the angle of the glenoid liner 4, after the angle adjustment of the glenoid liner 4 is completed, through the sliding fit between the slide bar 73 and the mounting bracket 75, the extension length and height of the glenoid liner 4 of the glenoid liner 4 are adjusted secondly, further ensuring the contact degree between the glenoid liner 4 and the glenoid ball head 3, and improving the adaptation degree between the glenoid liner 4 and the glenoid ball head 3. Through the secondary auxiliary adjustment of the glenoid liner 4, the installation adaptability of the glenoid ball head 3 and the glenoid liner 4 to different shoulder joint cutting surfaces is further ensured. At the same time, in cooperation with the connection effect between the first stud 742 and the first nut 743, and under the connection action of the second stud 78 and the second nut 79, the installation stability of the glenoid liner 4 after adjusting the extension length and height is ensured.

[0045] The working process of the technical solution provided by the present invention is as follows:

[0046] First, the medical staff observes the bone quality of the patient's shoulder joint and measures the angle between the shoulder joint prostheses. Subsequently, the proximal bone part of the patient's shoulder joint is cut with a cutting tool to form a cutting surface for installing the shoulder joint prosthesis. Then, the medical staff fixes the tantalum metal glenoid backplate 1 to the patient's shoulder joint cutting surface through the backplate fixing screw 2, so that the glenoid ball head 3 is fixed to the proximal part of the patient's shoulder joint through the tantalum metal glenoid backplate 1.

[0047] Then, according to the contact situation between the glenoid ball head 3 and the glenoid liner 4, the medical staff rotates the rotating rod 63 through the groove at one end of the rotating rod 63. While the rotating rod 63 rotates, it drives the spur gear 62 to rotate synchronously. While the spur gear 62 rotates, it meshes with the toothed ring 64 to rotate. While the toothed ring 64 rotates, it drives the rotating seat 65 to rotate synchronously. The rotating seat 65 drives the glenoid liner 4 to rotate synchronously through the auxiliary component 7 to change the angle of the glenoid liner 4. When the angle adjustment of the glenoid liner 4 is completed, the medical staff uses a tool to turn the first bolt 69. The first bolt 69 rotates and ejects from one side of the installation cavity 61 to push the clamping post 67, so that the clamping post 67 slides on the inner wall of the first limiting rod 68. While the clamping post 67 slides, the outer surface of the clamping post 67 gradually approaches and contacts the bottom surface of the toothed ring 64. When the medical staff turns the first bolt 69 in place with a tool, one end of the first bolt 69 pushes the clamping post 67 to reach below the bottom end of the toothed ring 64, realizing the limiting effect of the clamping post 67 on the toothed ring 64.

[0048] When the angle adjustment of the glenoid liner 4 is completed, the medical staff drives the screw rod 71 to rotate synchronously through the rotating disk 72, so that the sliding rod 73 on the outer surface of the screw rod 71 slides along the direction of the second limiting rod 74. At the same time, under the elastic action of the elastic telescopic rod 76, one end of the push plate 77 contacts one side of the inner wall of the rotating seat 65. While the sliding rod 73 slides, it drives the mounting bracket 75 to slide synchronously.

[0049] As Figure 8 shown, since the bottom of the glenoid liner 4 is welded to one end of the mounting bracket 75, when the mounting bracket 75 slides, one end of the mounting bracket 75 drives the glenoid liner 4 to slide along the top direction of the rotating seat 65. While the glenoid liner 4 slides, the whole moves away from the rotating seat 65. Similarly, when the medical staff reversely rotates the rotating disk 72 to drive the screw rod 71 to rotate reversely, the sliding rod 73 slides reversely to drive the mounting bracket 75 to slide synchronously in the reverse direction, so that the glenoid liner 4 approaches the rotating seat 65, thereby realizing the adjustment of the extending length of the glenoid liner 4. While the sliding rod 73 slides, it drives the connecting rod 741 to slide synchronously. While the connecting rod 741 slides, it drives the first stud 742 to slide along the opening on one side of the rotating seat 65. When the sliding rod 73 slides in place, the medical staff screws the first nut 743 onto the outer surface of the first stud 742 so that the first nut 743 closely adheres to one side of the rotating seat 65, realizing the lateral limiting effect on the sliding rod 73.

[0050] When the extending length of the glenoid liner 4 is adjusted in place, the medical staff pushes the glenoid liner 4 downward, as Figure 8As shown, since the bottom of the glenoid liner 4 is welded to one end of the mounting bracket 75, when the glenoid liner 4 slides downward, it drives the mounting bracket 75 to slide downward synchronously. At the same time, since the stud 742 is closely attached to one side of the rotating seat 65, the lateral sliding of the sliding rod 73 has been limited. At this time, the sliding rod 73 limits the vertical sliding of the mounting bracket 75. When the mounting bracket 75 slides downward, it slides along the direction of the sliding rod 73, thereby realizing the adjustment of the height position of the glenoid liner 4. Under the sliding action of the mounting bracket 75, the mounting bracket 75 drives the push plate 77 to slide along the groove on one side of the rotating seat 65 through the elastic telescopic rod 76 at one end. When the height position of the glenoid liner 4 is adjusted in place, the medical staff screws the nut 79 onto the outer surface of the stud 78 at one end of the push plate 77. Through the cooperation between the nut 79, the stud 78 and the push plate 77, the height position of the mounting bracket 75 is limited, and the limit of the adjusted height of the glenoid liner 4 is completed.

[0051] Subsequently, the medical staff inserts the humeral stem 5 into the medullary cavity of the patient's humerus and fills the medullary cavity of the patient's humerus with bone cement. After waiting for the bone cement to completely harden, the overall installation of the shoulder joint prosthesis is completed.

[0052] The present invention covers any substitutions, modifications, equivalent methods and solutions made within the spirit and scope of the present invention. In order to enable the public to have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention. However, those skilled in the art can fully understand the present invention without these detailed descriptions. In addition, in order to avoid unnecessary confusion to the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0053] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A shoulder joint prosthesis made of highly adaptable carbon fiber modified polyetheretherketone material, characterized in that, It includes a tantalum metal glenoid back plate, one end of which is provided with a back plate fixing screw, the other end of which is provided with a glenosphere head, one end of which is in contact with a glenoid liner, and also includes a humeral stem; An adjustment component, an adjustment component is provided at the top of the humeral stem, and the adjustment component is used to adjust the angle between the glenoid liner and the humeral stem, and the adjustment component includes a mounting cavity, and the mounting cavity is fixedly mounted on the top of the humeral stem; a flat gear is provided at the bottom end of the inner wall of the mounting cavity, and a rotating rod is provided at one end of the flat gear, and one end of the rotating rod is rotatably mounted on an inner wall of one side of the mounting cavity, and the rotating rod penetrates the inner wall of the mounting cavity and extends to the outside of the mounting cavity; a gear ring is meshingly provided at the top of the flat gear, and one end of the gear ring is arranged on one side of the inner wall of the mounting cavity, and a rotating seat is provided at the top of the gear ring; a clamping column is provided on one side of the bottom end of the gear ring, and a limiting rod 1 is sleeved on the outer surface of one end of the clamping column, and one end of the limiting rod 1 is arranged on the inner wall of the mounting cavity; The top end of the sliding seat is provided with a screw threading device, and the other end of the screw threading device is nested in the inner wall of the top end of the rotating seat, and one end of the screw threading device is fixedly installed with a rotating disk; a sliding rod is sleeved on the outer surface of the screw, and the top end of the sliding rod is sleeved with a limit rod 2, and both ends of the limit rod 2 are fixedly installed on the top of the rotating seat, and a connecting rod is provided at the bottom of the sliding rod, and the outer surface of the connecting rod contacts with an opening on one side of the rotating seat, and the end of the connecting rod extending out of the opening on one side of the rotating seat is installed with a stud 1, and a nut 1 is sleeved on the outer surface of the stud 1, and one end of the nut 1 contacts with a surface of one side of the rotating seat; a mounting bracket is sleeved on the outer upper surface of the sliding rod, one end of the mounting bracket is connected to the upper end of the liner of the glenoid cavity, and the other end of the mounting bracket is provided with an elastic telescopic rod; The humeral stem is connected to the glenoid liner through an adjusting component and an auxiliary component.

2. The highly adaptable carbon fiber modified polyetheretherketone shoulder joint prosthesis according to claim 1, characterized in that, The cross-sectional structure of the bottom end of the rotating seat is circular, and the cross-sectional structure of the top end of the rotating seat is a "匚"-shaped structure. A protective cover is provided at the bottom edge of the rotating seat, and the bottom surface of the protective cover is in contact with the inner wall of the mounting cavity. The material of the rotating seat and the protective cover is set to be a corrosion-resistant material, and the main material of the corrosion-resistant material is tantalum metal.

3. The highly adaptable carbon fiber modified polyetheretherketone shoulder joint prosthesis according to claim 2, wherein, The cross section of the clamping column is set to be a pentagon.

4. The highly adaptable carbon fiber modified polyetheretherketone material shoulder joint prosthesis according to claim 1, wherein, A bolt 1 is threadedly arranged on one side of the outer surface of the installation cavity, and one end of the bolt 1 is connected to one end of the clamping column.

5. The highly adaptable carbon fiber modified polyetheretherketone shoulder joint prosthesis according to claim 1, characterized in that, A push plate is provided at the other end of the elastic telescopic rod, and the other end of the push plate contacts one side of the inner wall of the rotating seat. A second stud is fixedly installed at one end of the push plate, and the other end of the second stud penetrates the inner wall of the rotating seat and extends to the outside of the rotating seat. A nut is sleeved on the outer surface of one end of the second stud extending to the outside of the rotating seat.

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