A self-locking tibial prosthesis

Abstract

The present invention provides a self-locking tibial prosthesis, comprising: a main body, a bendable claw is arranged on the edge of the lower surface, the claws are evenly distributed, an array gap is arranged between adjacent claws, a first annular protrusion is arranged at the center of the lower surface, a first protruding platform is arranged on the top of the first annular protrusion, an annular cable is placed on the first protruding platform, and traction cables are evenly arranged around the annular cable, and the traction cables are connected to the claws; a gasket, a second annular protrusion is arranged on the upper surface, and a second protruding platform is arranged on the top of the second annular protrusion. Applying the technical solution of the present invention, in knee replacement surgery, the gasket abuts against the tibia and moves upward, the diameter of the compressed annular cable shrinks, the traction claw is tightened, and the tibia is clamped to achieve a stable installation.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, in particular to a self-locking tibial prosthesis. Background Art

[0002] The tibial prosthesis of the knee joint is an artificial prosthesis used to replace the damaged tibial plateau during knee replacement surgery. Knee replacement surgery is a common method for treating knee joint diseases, which relieves pain and restores joint function by replacing damaged knee joint tissue and bone structure.

[0003] The tibial prosthesis is often considered as part of the knee prosthesis during knee replacement surgery. It is usually made of metal alloy or plastic material with a smooth surface to reduce friction and wear during joint movement.

[0004] The tibial prosthesis of the knee joint needs to be tightly connected to the bone, but if the patient has osteoporosis or severe bone disease, repeated forceful hammering during the prosthesis implantation process may cause tibia cracks, resulting in unstable fixation of the prosthesis and increasing the risk of loosening. Summary of the invention

[0005] In view of the above problems, the present invention proposes a self-locking tibial prosthesis, which removes the original tibial intramedullary rod and wing plate, adds retractable peri-bone claws, tightens the tibia, and achieves stable installation.

[0006] The present invention provides a self-locking tibial prosthesis, comprising: a main body, a lower surface edge of which is provided with bendable claws, the claws are evenly distributed, array gaps are provided between adjacent claws, a first annular protrusion is provided at the center of the lower surface, a first protrusion platform is provided on the top of the first annular protrusion, an annular cable is placed on the first protrusion platform, and traction cables are evenly provided around the annular cable, and the traction cables are connected to the claws; a gasket, an upper surface of which is provided with a second annular protrusion, and a second protrusion platform is provided on the top of the second annular protrusion.

[0007] Furthermore, a shrinkage gap is provided between the evenly distributed claws and the edge of the gasket.

[0008] Furthermore, a bending gap is provided on the outer surface of the claw.

[0009] Furthermore, a guide protrusion is provided at the center of the lower surface of the main body.

[0010] By applying the technical solution of the present invention, during knee replacement surgery, the gasket abuts against the tibia and moves upward, the diameter of the compressed annular cable shrinks, the pulling claws are tightened, and the tibia is clamped to achieve a stable installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0012] Figure 1 An exploded schematic diagram of a self-locking tibial prosthesis provided according to an embodiment of the present invention is shown;

[0013] Figure 2 A schematic structural diagram of a self-locking tibial prosthesis provided according to an embodiment of the present invention is shown;

[0014] Figure 3 A cross-sectional view of a self-locking tibial prosthesis provided according to an embodiment of the present invention is shown;

[0015] Figure 4 Shows Figure 1 Schematic diagram of the structure of the subject in .

[0016] The above drawings include the following reference numerals:

[0017] 10. Main body; 11. Clamping claw; 12. Array gap; 13. Contraction gap; 14. Bending gap; 15. First annular protrusion; 16. First protrusion platform; 17. Annular cable; 18. Pulling cable; 19. Guide protrusion;

[0018] 20. Gasket; 21. Second annular protrusion; 22. Second protrusion platform. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] like Figures 1 to 4 As shown, the present invention provides a self-locking tibial prosthesis, including: a main body 10, a bendable claw 11 is arranged on the edge of the lower surface, the claws 11 are evenly distributed, an array gap 12 is arranged between adjacent claws 11, a first annular protrusion 15 is arranged at the center of the lower surface, a first protrusion platform 16 is arranged on the top of the first annular protrusion 15, an annular cable 17 is placed on the first protrusion platform 16, and the annular cable 17 is evenly provided with traction cables 18 around it, and the traction cables 18 are connected to the claws 11; a gasket 20, a second annular protrusion 21 is arranged on the upper surface, and a second protrusion platform 22 is arranged on the top of the second annular protrusion 21.

[0021] In actual implementation, the array gap 12 can prevent the tightened claws 11 from colliding with each other, and the contraction gap 13 can prevent the tightened claws 11 from colliding with the gasket 20 .

[0022] During the installation process, the annular cable 17 is confined at the maximum diameter of the first raised platform 16 and the second raised platform 22. When the annular cable 17 shrinks, the diameter along the first raised platform 16 and the second raised platform 22 becomes smaller but it is always confined within the first raised platform 16 and the second raised platform 22 and will not fall off.

[0023] By applying the technical solution of the present invention, during knee replacement surgery, the gasket 20 abuts against the tibia and moves upward, the diameter of the compressed annular cable 17 shrinks, and the pulling claws 11 are tightened to clamp the tibia, thereby achieving a stable installation.

[0024] like Figure 3 As shown, a shrinkage gap 13 is provided between the evenly distributed claws 11 and the edge of the gasket 20 .

[0025] like Figures 1 to 4 As shown, a bending gap 14 is provided on the outer surface of the claw 11 .

[0026] like Figures 2 to 4 As shown, a guide protrusion 19 is also provided at the center of the lower surface of the main body 10.

[0027] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A self-locking tibial prosthesis, characterized in that: include: A main body (10) is provided with bendable claws (11) at the edge of the lower surface, the claws (11) are evenly distributed, array gaps (12) are provided between adjacent claws (11), a first annular protrusion (15) is provided at the center of the lower surface, a first protruding platform (16) is provided at the top of the first annular protrusion (15), an annular cable (17) is placed on the first protruding platform (16), and pulling cables (18) are evenly provided around the annular cable (17), the pulling cables (18) are connected to the claws (11), a contraction gap (13) is provided between the edge of the claw (11) and the gasket (20), and a bending gap (14) is provided on the outer surface of the claw (11); The gasket (20) has a second annular protrusion (21) on its upper surface, and a second protruding platform (22) is provided on the top of the second annular protrusion (21).

2. A self-locking tibial prosthesis according to claim 1, characterized in that: A guide protrusion (19) is also provided at the centre of the lower surface of the main body (10).

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