Knee joint biological prosthesis

Abstract

The utility model relates to the technical field of biological prostheses, in particular to a knee joint biological prosthesis which comprises a prosthesis connecting part, the prosthesis connecting part is of a structure with a wide upper portion and a narrow lower portion, a circular groove is formed in the upper end of the prosthesis connecting part, an adjusting device is movably connected in the circular groove, four notches are formed in the outer surface of the prosthesis connecting part, and the adjusting device is movably connected in the circular groove. And supporting devices are movably connected into the four notches, and the four notches are distributed at equal intervals. According to the knee joint biological prosthesis, the four supporting devices are arranged, after the prosthesis connecting part is inserted into the bone of a patient, the twisting end is rotated to drive the threaded rod to rotate, the adjusting block in threaded connection with the threaded rod slides upwards in the sliding groove, and in the upward moving process of the adjusting block, the supporting blocks are jacked up to adjust the angle of the supporting blocks, so that the angle of the patient is adjusted; the supporting block extends out of the prosthesis connecting part after the angle is adjusted, so that the prosthesis connecting part is prevented from slipping in the bone.

Description

Technical Field

[0001] This utility model relates to the field of biological prosthesis technology, and in particular to biological prostheses for the knee joint. Background Technology

[0002] A bioprosthetic knee joint is an artificial implant used to replace a damaged or worn knee joint. It is designed to mimic the structure and function of a natural knee joint, providing more natural movement and stability. Compared to traditional metal or plastic prostheses, bioprosthetics are typically made of biomaterials or biomimetic materials, offering better biocompatibility and movement characteristics closer to a natural knee joint. Existing bioprosthetic knee joints are often installed by directly inserting the connector into a hole in the bone, which is prone to slippage and instability. Therefore, we have introduced bioprosthetic knee joints. Utility Model Content

[0003] The main purpose of this invention is to provide a biological prosthesis for the knee joint, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A biological knee joint prosthesis includes a prosthesis connector, which has a structure that is wider at the top and narrower at the bottom. A circular groove is opened at the upper end of the prosthesis connector, and an adjustment device is movably connected in the circular groove. Four slots are opened on the outer surface of the prosthesis connector, and a support device is movably connected in each of the four slots. The four slots are evenly distributed.

[0006] Preferably, the support device includes a support block, the support block has two cavities in the middle of its front end, and a connecting shaft is inserted and fixedly connected to the right side of the front end of the support block.

[0007] By adopting the above technical solution, the cavity facilitates bone growth into its interior, improving the stability of the connection between the support block and the bone.

[0008] Preferably, the connecting shaft is movably connected to the inner wall of the slot, the right end of the support block has an arc surface structure, and the support block has a structure that is narrower at the top and wider at the bottom.

[0009] Preferably, the adjusting device includes a torsion end, the lower end of which is fixedly connected to a threaded rod, and the lower part of the outer surface of the threaded rod is threadedly connected to an adjusting block.

[0010] Preferably, the prosthesis connection portion has a groove, which communicates with four slots.

[0011] Preferably, the threaded rod is movably connected to the lower groove wall of the slide groove via a bearing, the adjusting block is located below the support block, the adjusting block has a "+" shaped structure, and the torsion end is located in the circular groove.

[0012] Preferably, the support block does not contact the upper or lower groove wall.

[0013] This utility model has the following beneficial effects:

[0014] In this invention, four support devices are provided. After the prosthesis connector is inserted into the patient's bone, the twisting end is rotated, causing the twisting end to drive the threaded rod to rotate. The adjusting block, which is threadedly connected to the threaded rod, slides upward in the groove. During the upward movement of the adjusting block, the support block is lifted to adjust its angle. After the angle of the support block is adjusted, it extends out of the prosthesis connector, thereby preventing the prosthesis connector from slipping out of the bone. By opening a cavity in the support block, it is easy for bone tissue to grow into the cavity, increasing the stability of the support block. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the biological knee joint prosthesis of this utility model;

[0016] Figure 2 This is a schematic diagram illustrating the use of the biological knee joint prosthesis of this utility model;

[0017] Figure 3 This is a schematic cross-sectional view of the prosthesis connection part of the knee joint biological prosthesis of this utility model;

[0018] Figure 4 This is a schematic diagram of the overall structure of the support device for the knee joint bio-prosthesis of this utility model;

[0019] Figure 5 This is a schematic diagram of the overall structure of the adjustment device for the biological knee joint prosthesis of this utility model.

[0020] In the figure: 1. Prosthesis connection part; 2. Circular groove; 3. Adjustment device; 4. Support device; 5. Groove opening; 11. Slide groove; 31. Torsion end; 32. Threaded rod; 33. Adjustment block; 41. Support block; 42. Cavity; 43. Connecting shaft. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Please see Figure 1-4 This utility model provides a technical solution:

[0025] A biological knee joint prosthesis includes a prosthesis connector 1, which has a structure that is wider at the top and narrower at the bottom. A circular groove 2 is opened at the upper end of the prosthesis connector 1, and an adjustment device 3 is movably connected in the circular groove 2. Four slots 5 are opened on the outer surface of the prosthesis connector 1, and a support device 4 is movably connected in each of the four slots 5. The four slots 5 are evenly distributed.

[0026] In this embodiment, the support device 4 includes a support block 41, with two cavities 42 in the middle of the front end of the support block 41. A connecting shaft 43 is fixedly connected to the right side of the front end of the support block 41. The connecting shaft 43 is movably connected to the inner wall of the slot 5. The right end of the support block 41 has an arc-shaped structure, and the support block 41 has a structure that is narrower at the top and wider at the bottom. The adjustment device 3 includes a torsion end 31, with a threaded rod 32 fixedly connected to the lower end of the torsion end 31. An adjustment block 33 is threadedly connected to the lower part of the outer surface of the threaded rod 32. A sliding groove 11 is opened in the prosthesis connection part 1, and the sliding groove 11 communicates with the four slots 5. The threaded rod 32 is movably connected to the lower wall of the sliding groove 11 through a bearing. The adjustment block 33 is located at the lower part of the support block 41 and has a "+" shaped structure. The torsion end 31 is located in the circular groove 2. The support block 41 does not contact the upper or lower wall of the slot 5.

[0027] Through the above scheme: the rotating torsion end 31 drives the threaded rod 32 to rotate, and the adjusting block 33 on the threaded rod 32 moves vertically upward on the threaded rod 32 under the limit of the slide groove 11. The adjusting block 33 lifts the support blocks 41 on the four support devices 4 and adjusts the angle so that the four support blocks 41 extend out of the prosthesis connection part 1, thereby improving the stability of the entire prosthesis and bone connection.

[0028] It should be noted that this utility model describes a biological prosthesis for the knee joint. The prosthesis connector 1 is implanted into the patient's bone. Rotating the torsion end 31 drives the threaded rod 32 to rotate synchronously. Subsequently, the adjustment block 33, threadedly connected to the threaded rod 32, smoothly rises within a pre-set groove 11. During the rise of the adjustment block 33, it lifts four support blocks 41, allowing for fine adjustment of the angle of the support blocks 41. The adjusted support blocks 41 partially extend beyond the prosthesis connector 1, effectively preventing slippage of the prosthesis connector 1 within the bone. To enhance the stability of the support blocks 41 and promote natural fusion of bone tissue, cavities 42 are formed on the support blocks. This allows bone tissue to gradually grow and permeate into the cavity 42 over time, thereby achieving a tighter and more durable bond between the prosthesis and the patient's bone.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A biological knee joint prosthesis, comprising a prosthesis connector (1), characterized in that: The prosthesis connecting part (1) has a structure that is wider at the top and narrower at the bottom. A circular groove (2) is opened at the upper end of the prosthesis connecting part (1). An adjustment device (3) is movably connected in the circular groove (2). Four slots (5) are opened on the outer surface of the prosthesis connecting part (1). A support device (4) is movably connected in each of the four slots (5). The four slots (5) are evenly distributed. The support device (4) includes a support block (41), with two cavities (42) in the middle of the front end of the support block (41), and a connecting shaft (43) is inserted and fixedly connected to the right side of the front end of the support block (41).

2. The knee joint bio-prosthesis according to claim 1, characterized in that: The connecting shaft (43) is movably connected to the inner wall of the slot (5), the right end of the support block (41) is an arc surface structure, and the support block (41) is a structure that is narrow at the top and wide at the bottom.

3. The knee joint bio-prosthesis according to claim 1, characterized in that: The adjusting device (3) includes a twisting end (31), and a threaded rod (32) is fixedly connected to the lower end of the twisting end (31). An adjusting block (33) is threadedly connected to the lower part of the outer surface of the threaded rod (32).

4. The knee joint bio-prosthesis according to claim 1, characterized in that: The prosthesis connection part (1) has a groove (11) inside, and the groove (11) is connected to four slots (5).

5. The knee joint bio-prosthesis according to claim 3, characterized in that: The threaded rod (32) is movably connected to the lower groove wall of the slide groove (11) through a bearing. The adjusting block (33) is located at the lower part of the support block (41). The adjusting block (33) has a "+" shaped structure. The twisting end (31) is located in the circular groove (2).

6. The knee joint bio-prosthesis according to claim 1, characterized in that: The support block (41) does not contact the upper and lower walls of the slot (5).

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