An anatomical shoulder joint prosthesis

Abstract

The present invention provides an anatomical shoulder joint prosthesis, belonging to the technical field of medical devices. It comprises an implant plug, the outer side of the implant plug is provided with four groups of fixing fins at equal angles, the inner side of the implant plug is nested with a fixing pin, the bottom of the fixing pin is connected to a contact block 1, and also comprises a support assembly, the support assembly is installed on the inner side of the four groups of fixing fins, and the support assembly is used to assist in fixing the inner side of the humerus. The present invention is provided with a support assembly, and four groups of support rods are spread out to assist in supporting the radial direction of the positioning pin on the inner side of the humerus, so that the two groups of force directions on the inner side of the humerus are perpendicular to each other, and can conflict with each other through the force directions, so as to prevent the positioning pin from retracting and loosening during the movement of the prosthesis, causing the implant plug to fall off from the clamping hole slot, affecting the patient's postoperative movement recovery, and reducing the cost of surgery.

Description

Technical Field

[0001] The invention relates to the technical field of medical instruments, and in particular to an anatomical shoulder joint prosthesis. Background Art

[0002] The shoulder joint is the most mobile joint in the human body, and because of its large head and small glenoid cavity, it is also the most unstable joint in the human body. The rotator cuff is a group of muscles that wrap around the humeral head and is composed of the supraspinatus, infraspinatus, teres minor and subscapularis. This structure is an important dynamic stability structure of the shoulder joint.

[0003] For patients with end-stage shoulder degeneration and some complex shoulder trauma that affect their lives, shoulder replacement, which is the simultaneous or separate replacement of the humeral head and glenoid cavity with artificial materials, is considered the only viable treatment option. The shoulder replacement prostheses currently used on the market have designs that conform to human anatomy, namely conventional or anatomical.

[0004] During the installation process of the existing anatomical stemless shoulder prosthesis, a fin plate is implanted in the humeral head to support the inner side to assist in the fixed installation of the glenoid prosthesis. The installation force position is single. During the patient's postoperative recovery process, the fin plate may be dislocated due to the patient's recovery movement, causing the glenoid prosthesis to fall off, causing a collision with the glenoid prosthesis on one side of the shoulder joint, which may easily cause physical damage to the patient. At the same time, since the conditions of each patient with shoulder trauma are different, the required inclination angle of the humeral end cutting is different. When fixing one side of the glenoid prosthesis, the force position of the humerus needs to be adjusted to prevent the prosthesis from falling off. During the installation of the glenoid prosthesis, due to the shape and weight of the prosthesis, it is inconvenient to pick up and align the prosthesis during surgery, and it is easy to fall off from the hands, which may cause damage to the prosthesis and increase the cost of surgery.

[0005] Therefore, the present application provides an anatomical shoulder joint prosthesis to meet the needs. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide an anatomical shoulder joint prosthesis to solve the problem that during the installation process of the existing anatomical stemless shoulder joint prosthesis, a fin plate is implanted in the humeral head to support the inner side to assist the fixed installation of the glenoid prosthesis. The installation force position is single. During the patient's postoperative recovery process, the fin plate may be dislocated due to the influence of the patient's recovery movement, causing the glenoid prosthesis to fall off, causing a collision with the glenoid prosthesis on one side of the shoulder joint, which is easy to cause physical damage to the patient. At the same time, since the situation of each patient with shoulder joint trauma is different, the required inclination angle of the humeral end cutting is different. When fixing one side of the glenoid prosthesis, it is necessary to adjust the force position of the humerus to prevent the prosthesis from falling off. In addition, when the glenoid prosthesis is installed, it is inconvenient to take and align the prosthesis during surgery due to the shape and weight of the prosthesis, and it is easy to fall off from the hand, which may cause damage to the prosthesis and increase the cost of surgery.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0008] An anatomical shoulder joint prosthesis includes an implant plug, four groups of fixing fins are arranged at equal angles on the outside of the implant plug, a fixing pin is nested on the inside of the implant plug, and the bottom of the fixing pin is connected to a contact block 1. It also includes a support component, which is installed on the inside of the four groups of fixing fins and is used to assist in fixing the inside of the humerus; a fixing component, which is installed on the outside of the fixing pin and is used to connect and fix the prosthesis; and an adjustment component, which is installed on the outside of the fixing component and is used to adjust the fixing hole position on the outside of the humeral head.

[0009] Optionally, the support assembly includes a mounting rod, which is nested and installed on the inner side of the four groups of fixed fins, and the mounting rod slides on the inner side of the fixed fins. A fixing ring is provided on the outer side of the mounting rod, and four groups of support rods are provided on the outer side of the mounting rod at equal angles.

[0010] Optionally, a slider 1 is respectively provided in the slide groove of the four groups of support rods, the slider 1 and the fixing ring are connected to each other through a spring, one end of the mounting rod is connected to a positioning pin, and the tail end of the mounting rod is connected to a contact block 2.

[0011] Optionally, the support rod rotates outside the mounting rod, the slider 1 slides inside the slide groove corresponding to the support rod, and the contact block 2 is configured to be spherical.

[0012] Optionally, the fixing assembly includes a mounting substrate, the mounting substrate is arranged at equal angles on the outside of the fixing pin, a threaded hole 1 is arranged on the inside of the fixing pin, and a fixing bolt is threadedly connected to the inside of the threaded hole 1.

[0013] Optionally, the mounting base plates are arranged in four groups, positioning columns are arranged on the tops of the four groups of mounting base plates, glenoid prostheses are arranged on the tops of the four groups of mounting base plates, positioning grooves are arranged on the bottoms of the glenoid prostheses, and threaded holes 2 are arranged on the bottoms of the glenoid prostheses.

[0014] Optionally, the mounting substrate is made of titanium alloy material, the positioning post is arranged perpendicular to the top of the mounting substrate, and the positioning post can slide in the positioning groove.

[0015] Optionally, the adjustment assembly includes a base, which is respectively mounted on one side of the four groups of mounting substrates, and two groups of slide grooves are symmetrically arranged on the surface of the base, and a sliding frame is arranged between the two groups of slide grooves.

[0016] Optionally, a sliding block 2 is nested and installed on the inner side of the sliding frame, a mounting hole is provided on the inner side of the sliding block 2, and a screw is installed in the mounting hole.

[0017] Optionally, the base is made of titanium alloy material, a bending groove is provided on one side of the base near the connection with the mounting substrate, the sliding frame is arranged perpendicular to the surface of the base, and the sliding frame and the sliding block 2 are arranged in an arc shape.

[0018] Compared with the prior art, the technical solution of the present invention has at least the following beneficial effects:

[0019] The four groups of positioning pins are inserted into the radial direction of the inner side of the humeral head at the same time to support the inner side of the humeral head, thereby improving the installation stability of the lateral humeral glenoid prosthesis. As the four groups of positioning pins extend out of the end holes of the fixing fin plate, the four groups of support rods on the outer side of the mounting rod extend out of the end holes of the fixing fin plate, and the corresponding springs are no longer subjected to the extrusion force, driving the four groups of support rods to be spread out in the direction away from the mounting rod, and the corresponding side slider one slides on the inner side of the support rod to ensure the force stability of the spring in the process of restoring the original state, and the radial direction of the positioning pins is auxiliary supported on the inner side of the humerus through the spreading of the four groups of support rods, so that the two groups of force directions on the inner side of the humerus are perpendicular to each other, and can conflict with each other through the force directions, thereby preventing the positioning pins from retracting and loosening during the movement of the prosthesis, causing the implant plug to fall off from the clamping hole groove, affecting the patient's postoperative recovery, and reducing the cost of surgery.

[0020] By providing an adjustment component, the operator manually squeezes the base toward the outside of the humeral head so that the base is close to the outer surface of the humeral head. Since the base and the mounting base plate are made of titanium alloy material, the connection between the base and the mounting base plate has good fatigue strength and wear resistance, and will not break due to deformation of the base connection. According to the shape of the remaining part cut at the end of the humeral head, the sliding frame is manually pulled to slide to a suitable position in the sliding groove, and the sliding slider 2 is made to slide in the circular arc sliding groove of the sliding frame, thereby changing the installation angle of the mounting hole. The operator screws the screw into the mounting hole and inserts it into the hole from the outside of the humeral head, so that the base has a good force angle through the implantation of the screw, and the base is fixed to improve the stability of the prosthesis during installation. At the same time, a lateral auxiliary fixing force is provided to the inner side humeral fixed fin to reduce the possibility of the overall falling off of the prosthesis installation structure.

[0021] By providing a positioning column and a positioning groove, the glenoid prosthesis is positioned and contacted with the positioning column on the top of the mounting base plate through the positioning groove at the bottom, so that the positioning column slides in the positioning groove, and the glenoid prosthesis is rotated to connect the second threaded hole with the thread of the exposed part of the fixing bolt for fixation, thereby preventing the glenoid prosthesis from falling out of the hand due to the inconvenience in taking it during installation, thereby avoiding damage to the glenoid prosthesis and avoiding unnecessary economic losses during surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] 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.

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the anatomical shoulder joint prosthesis;

[0024] Figure 2 This is an exploded view of the three-dimensional structure of the anatomical shoulder prosthesis;

[0025] Figure 3 It is a schematic diagram of the three-dimensional structure of the support component;

[0026] Figure 4 for Figure 3 A magnified view of the three-dimensional structure at A;

[0027] Figure 5 is a schematic diagram of the three-dimensional structure of the support assembly in its initial state;

[0028] Figure 6 for Figure 5 A magnified view of the three-dimensional structure at B;

[0029] Figure 7 A schematic diagram of the three-dimensional structure of the installation rod, the fixing ring, the support rod and the positioning pin assembly;

[0030] Figure 8 It is a schematic diagram of the three-dimensional structure of the glenoid prosthesis, the positioning groove and the threaded hole;

[0031] Fig. 9 It is a schematic diagram of the three-dimensional structure of the fixed component;

[0032] Fig.10 It is a schematic diagram of the three-dimensional structure of the adjustment component.

[0033] [Reference Signs]

[0034] 1. Implantation plug; 2. Fixing fin; 3. Fixing pin; 4. Contact block one; 5. Support assembly; 51. Mounting rod; 52. Fixing ring; 53. Support rod; 54. Slider one; 55. Spring; 56. Positioning pin; 57. Contact block two; 6. Fixing assembly; 61. Mounting base plate; 62. Threaded hole one; 63. Fixing bolt; 64. Positioning column; 65. Shoulder glenoid prosthesis; 66. Positioning groove; 67. Threaded hole two; 7. Adjustment assembly; 71. Base; 72. Slide groove; 73. Sliding frame; 74. Slider two; 75. Mounting hole; 76. Screw.

[0035] 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

[0036] The following is a detailed description of an anatomical shoulder joint prosthesis 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.

[0037] 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).

[0038] 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.

[0039] 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.

[0040] 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.

[0041] like Figure 1 and Figure 2 As shown, an embodiment of the present invention provides an anatomical shoulder joint prosthesis, including an implant plug 1, wherein four groups of fixing fins 2 are arranged at equal angles on the outside of the implant plug 1, a fixing pin 3 is nested on the inside of the implant plug 1, and a contact block 4 is connected to the bottom of the fixing pin 3; it also includes a support component 5, the support component 5 is installed on the inside of the four groups of fixing fins 2, and the support component 5 is used to assist in fixing the inside of the humerus; a fixing component 6, the fixing component 6 is installed on the outside of the fixing pin 3, and the fixing component 6 is used to connect and fix the prosthesis; an adjustment component 7, the adjustment component 7 is installed on the outside of the fixing component 6, and the adjustment component 7 is used to adjust the fixing hole position on the outside of the humeral head.

[0042] like Figures 1 to 7 As shown, the support assembly 5 includes a mounting rod 51, which is nested and installed on the inner side of four groups of fixed fins 2. The mounting rod 51 slides on the inner side of the fixed fins 2. A fixing ring 52 is arranged on the outer side of the mounting rod 51, and four groups of support rods 53 are arranged at equal angles on the outer side of the mounting rod 51.

[0043] First, the operator cuts the end surface of the bone on one side of the humeral head, uses a special tool to punch out a snap-in hole groove on the bone cut surface, then implants the assembly of the implant plug 1 and the four sets of fixing fin plates 2 into the inside of the snap-in hole groove, inserts the fixing pin 3 and the contact block 1 4 into the inner side of the implant plug 1, and during the downward movement of the contact block 1 4, the conical surface of the contact block 1 4 simultaneously contacts the spherical surface of the four sets of contact blocks 2 57, pushes the installation rod 51 away from the central axis of the fixing pin 3, and makes the positioning pin 56 extend from the end hole of the fixing fin plate 2, and the four sets of positioning pins 56 are simultaneously inserted into the radial direction of the inner side of the humeral head to support the inner side of the humerus, thereby improving the installation stability of the lateral humeral glenoid prosthesis 65. (In the initial state, the support rod 53 is blocked by the inner wall of the fixing fin plate 2, so that the support rod 53 squeezes the spring 55, and the spring 55 is compressed by force) As the four groups of positioning pins 56 extend from the end holes of the fixed fin plate 2, the four groups of support rods 53 on the outside of the mounting rod 51 extend from the end holes of the fixed fin plate 2, and the corresponding springs 55 are no longer subjected to the extrusion force, driving the four groups of support rods 53 to expand in the direction away from the mounting rod 51, and the corresponding side slider 54 slides on the inner side of the support rod 53 to ensure the force stability of the spring 55 in the process of restoring its original state, and the radial direction of the positioning pins 56 is auxiliary supported on the inner side of the humerus by the expansion of the four groups of support rods 53, so that the two groups of force directions on the inner side of the humerus are perpendicular to each other, and can conflict with each other through the force directions, thereby preventing the positioning pins 56 from retracting and loosening during the movement of the prosthesis, causing the implant plug 1 to fall off from the clamping hole groove, affecting the patient's postoperative recovery, and reducing the cost of surgery.

[0044] like Figures 1 to 7 As shown, a slider 1 54 is respectively provided in the slide groove of the four groups of support rods 53, and the slider 1 54 and the fixing ring 52 are connected to each other through a spring 55. A positioning pin 56 is connected to one end of the mounting rod 51, and a contact block 2 57 is connected to the tail end of the mounting rod 51.

[0045] In this embodiment, the support rod 53 rotates outside the mounting rod 51, the slider 1 54 slides inside the slide groove corresponding to the support rod 53, and the contact block 2 57 is set to be spherical to improve the triggering stability of the device.

[0046] like Figure 1 , Figure 2 , Figure 8 and Fig. 9 As shown, the fixing assembly 6 includes a mounting base plate 61, which is arranged at an equal angle on the outside of the fixing pin 3, and a threaded hole 62 is arranged on the inside of the fixing pin 3, and a fixing bolt 63 is threadedly connected to the inside of the threaded hole 62;

[0047] Screw the fixing bolt 63 into the threaded hole 1 62 so that the fixing bolt 63 is fixed on the inner side of the fixing pin 3. Then, the glenoid prosthesis 65 is positioned and contacted with the positioning column 64 on the top of the mounting base plate 61 through the positioning groove 66 at the bottom. The positioning column 64 slides in the positioning groove 66. The glenoid prosthesis 65 is rotated so that the threaded hole 2 67 is connected to the thread of the exposed part of the fixing bolt 63 for fixing, thereby completing the installation of the prosthesis.

[0048] like Figure 1 , Figure 2 , Figure 8 and Fig. 9 As shown, the mounting base plate 61 is arranged in four groups, the tops of the four groups of mounting base plates 61 are provided with positioning posts 64, the tops of the four groups of mounting base plates 61 are provided with glenoid prostheses 65, the bottoms of the glenoid prostheses 65 are provided with positioning grooves 66, and the bottoms of the glenoid prostheses 65 are provided with threaded holes 67.

[0049] In this embodiment, the mounting base plate 61 is made of titanium alloy material to increase the service life of the mounting base plate 61. The positioning column 64 is arranged perpendicular to the top of the mounting base plate 61. The positioning column 64 can slide in the positioning groove 66 to improve the positioning stability of the shoulder blade prosthesis 65 and prevent it from falling off from the hand during installation.

[0050] like Figure 1 , Figure 2 and Fig.10 As shown, the adjustment assembly 7 includes a base 71 , which is respectively mounted on one side of four groups of mounting base plates 61 , and two groups of slide grooves 72 are symmetrically arranged on the surface of the base 71 , and a sliding frame 73 is arranged between the two groups of slide grooves 72 .

[0051] The operator uses a tool to squeeze the base 71 toward the outside of the humeral head so that the base 71 is close to the outer surface of the humeral head. Since the base 71 and the mounting base plate 61 are made of titanium alloy material, and a bending groove is provided at the connection between the base 71 and the mounting base plate 61, the connection between the base 71 and the mounting base plate 61 has good fatigue resistance and wear resistance. At the same time, it is convenient for the operator to use the tool to bend the base 71 without causing the deformation of the connection of the base 71 to cause fracture. According to the shape of the remaining part of the cut end of the humeral head, the sliding frame 73 is manually pulled to slide in the sliding groove 72 to a suitable position, and the sliding slider 74 is slid to make the sliding slider 74 slide in the arc sliding groove of the sliding frame 73, thereby changing The installation angle of the mounting hole 75 is determined by the operator screwing the screw 76 into the mounting hole 75 and inserting it from the outside of the humeral head, so that the base 71 has a good force angle through the implantation of the screw 76, and the base 71 is fixed to improve the stability of the prosthesis during installation. Then, the fixing bolt 63 is screwed into the threaded hole 1 62, so that the fixing bolt 63 is fixed on the inner side of the fixing pin 3, and then the shoulder glenoid prosthesis 65 is positioned and contacted with the positioning column 64 at the top of the mounting base plate 61 through the positioning groove 66 at the bottom, so that the positioning column 64 slides in the positioning groove 66, and the shoulder glenoid prosthesis 65 is rotated to connect the threaded hole 2 67 with the thread of the exposed part of the fixing bolt 63 to fix it, thereby completing the installation of the prosthesis.

[0052] like Figure 1 , Figure 2 and Fig.10 As shown, a second slide block 74 is nested and installed on the inner side of the sliding frame 73 , and a mounting hole 75 is provided on the inner side of the second slide block 74 , and a screw 76 is installed in the mounting hole 75 .

[0053] In this embodiment, the base 71 is made of titanium alloy material to increase the service life of the base 71. A bending groove is provided on one side of the base 71 near the connection with the mounting substrate 61 to facilitate bending by operators and improve bending efficiency. The sliding frame 73 is arranged perpendicular to the surface of the base 71 to improve the operating stability of the device. The sliding frame 73 and the slider 74 are arranged in an arc shape.

[0054] The working process of the technical solution of the present invention is as follows:

[0055] First, the operator cuts the bone end surface on one side of the humeral head, uses a special tool to punch out a snap-in hole groove on the bone cut surface, then implants the assembly of the implant plug 1 and the four sets of fixing fin plates 2 into the snap-in hole groove, inserts the fixing pin 3 and the contact block 1 4 into the inner side of the implant plug 1, and during the downward movement of the contact block 1 4, the conical surface of the contact block 1 4 simultaneously contacts the spherical surface of the four sets of contact blocks 2 57, pushes the mounting rod 51 away from the central axis of the fixing pin 3, and makes the positioning pin 56 extend from the end hole of the fixing fin plate 2, and the four sets of positioning pins 56 are simultaneously inserted into the radial direction of the inner side of the humeral head to support the inner side of the humerus, thereby improving the installation stability of the lateral humeral glenoid prosthesis 65 (in the initial state, the support rod 53 fits the surface of the mounting rod 51, and the spring 55 is in a compressed state). As the four sets of positioning pins 56 are extended from the fixing fin The four groups of support rods 53 on the outside of the mounting rod 51 extend out from the end holes of the fixed fin plate 2, and the corresponding springs 55 are no longer subjected to the extrusion force, driving the four groups of support rods 53 to be stretched away from the mounting rod 51, and the corresponding side slider 54 slides on the inner side of the support rod 53 to ensure the force stability of the spring 55 during the restoration process. The radial direction of the positioning pin 56 is auxiliary supported on the inner side of the humerus by the four groups of support rods 53 being stretched out, so that the two groups of force directions on the inner side of the humerus are perpendicular to each other, and can conflict with each other through the force directions, so as to prevent the positioning pin 56 from retracting and loosening during the movement of the prosthesis, causing the implant plug 1 to fall off from the clamping hole groove, affecting the patient's postoperative recovery, and reducing the cost of surgery, so that the mounting base plate 61 connected to the fixing pin 3 can fit the cut surface of the humerus;

[0056] Then the operator uses a tool to squeeze the base 71 toward the outside of the humeral head so that the base 71 is close to the outer surface of the humeral head. Since the base 71 and the mounting base plate 61 are made of titanium alloy material and a bending groove is provided at the connection between the base 71 and the mounting base plate 61, the connection between the base 71 and the mounting base plate 61 has good fatigue strength and wear resistance, and it is convenient for the operator to use tools to bend the base 71 without causing the deformation of the connection of the base 71 to cause fracture. According to the shape of the remaining part cut at the end of the humeral head, the sliding frame 73 is manually pulled to slide in the sliding groove 72 to a suitable position, and the sliding slider 74 is made to slide in the arc sliding groove of the sliding frame 73 by sliding the sliding slider 74, thereby changing the installation angle of the mounting hole 75. The operator screws the screw 76 into the mounting hole 75 and inserts it from the outside of the humeral head, so that the base 71 has a good force angle through the implantation of the screw 76, fixes the base 71, and improves the stability of the prosthesis during installation. Then, the fixing bolt 63 is screwed into the threaded hole 1 62, so that the fixing bolt 63 is fixed on the inner side of the fixing pin 3, and then the glenoid prosthesis 65 is positioned and contacted with the positioning column 64 on the top of the mounting base plate 61 through the positioning groove 66 at the bottom, so that the positioning column 64 slides in the positioning groove 66 to prevent the glenoid prosthesis 65 from falling off from the hand due to the inconvenience of taking it during installation. The glenoid prosthesis 65 is rotated to connect the threaded hole 2 67 with the thread of the exposed part of the fixing bolt 63 for fixing, thereby completing the installation of the prosthesis.

[0057] 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.

[0058] 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 anatomical shoulder joint prosthesis, characterized in that: include: An implant plug, wherein four groups of fixing fins are arranged at equal angles on the outside of the implant plug, a fixing pin is nested on the inside of the implant plug, and a contact block 1 is connected to the bottom of the fixing pin; A support assembly, the support assembly includes a mounting rod, the mounting rod is nested and installed on the inner side of the four groups of fixed fins, the mounting rod slides on the inner side of the fixed fins, a fixing ring is arranged on the outer side of the mounting rod, and four groups of support rods are arranged on the outer side of the mounting rod at equal angles; a slider 1 is respectively arranged in the sliding groove of the four groups of support rods, the slider 1 and the fixing ring are connected to each other through a spring, one end of the mounting rod is connected to a positioning nail, and the tail end of the mounting rod is connected to a contact block 2; The conical surface of the contact block 1 can contact the spherical surfaces of the four groups of contact blocks 2 at the same time, pushing the mounting rod away from the central axis of the fixing pin, so that the positioning pin extends out from the end hole of the fixing fin plate, and the four groups of positioning pins are simultaneously inserted into the radial direction of the inner side of the humeral head to support the inner side of the humerus; A fixing assembly, the fixing assembly is installed on the outside of the fixing pin, and the fixing assembly is used to connect and fix the prosthesis; the fixing assembly includes a mounting base plate, the mounting base plate is arranged at an equal angle on the outside of the fixing pin, the inside of the fixing pin is provided with a threaded hole 1, and the inside of the threaded hole 1 is threadedly connected with a fixing bolt; An adjustment component, which is installed on the outside of the fixing component, and is used to adjust the fixing hole position on the outside of the humeral head; the adjustment component includes a base, which is respectively installed on one side of the four groups of mounting base plates, and the surface of the base is symmetrically provided with two groups of slide grooves, and a sliding frame is provided between the two groups of slide grooves.

2. The anatomical shoulder joint prosthesis according to claim 1, characterized in that: The support rod rotates outside the mounting rod, the slider 1 slides inside the slide groove corresponding to the support rod, and the contact block 2 is configured to be spherical.

3. The anatomical shoulder joint prosthesis according to claim 1, characterized in that: The mounting base plates are arranged in four groups, the tops of the four groups of mounting base plates are provided with positioning posts, the tops of the four groups of mounting base plates are provided with glenoid prostheses, the bottoms of the glenoid prostheses are provided with positioning grooves, and the bottoms of the glenoid prostheses are provided with threaded holes 2.

4. The anatomical shoulder joint prosthesis according to claim 3, characterized in that: The mounting base plate is made of titanium alloy material. The positioning column is arranged perpendicular to the top of the mounting base plate, and the positioning column can slide in the positioning groove.

5. The anatomical shoulder joint prosthesis according to claim 4, characterized in that: A second slide block is nested and installed on the inner side of the sliding frame. A mounting hole is arranged on the inner side of the second slide block, and a screw is installed in the mounting hole.

6. The anatomical shoulder joint prosthesis according to claim 5, characterized in that: The base is made of titanium alloy material, a bending groove is arranged on one side of the base near the connection of the mounting substrate, the sliding frame is arranged perpendicular to the surface of the base, and the sliding frame and the sliding block are both arranged in an arc shape.

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