Biological fixation type tibial prosthesis assembly

Abstract

The utility model relates to a biological fixation type tibia prosthesis assembly, which comprises a prosthesis main body and an installation positioning plate, the prosthesis main body comprises a plate body, a stand column arranged on the plate body and a plurality of arc-shaped battens arranged around the stand column, and the stand column and the arc-shaped battens are used for being installed on the tibia; a stand column positioning hole and an arc-shaped batten positioning strip hole are formed in the installation positioning plate, the stand column positioning hole and the arc-shaped batten positioning strip hole are matched with the stand column and the arc-shaped batten in position and size respectively, and the installation positioning plate is used for holing positioning on the tibia. Compared with the prior art, damage to marrow is reduced, the integrity of a marrow cavity is kept, and therefore the influence on an immune system is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a biological fixation type tibial prosthesis component. Background Art

[0002] Artificial knee replacement surgery, as an important means of treating severe knee joint degeneration or arthritis, involves replacing the damaged joint surface with an artificial prosthesis. These prostheses are designed to relieve pain and improve joint function by mimicking the natural mechanism of the knee joint. However, the key challenge in this process is to ensure a solid bond between the artificial prosthesis and the bone while maintaining smooth movement of the joint during daily activities, which requires precise surgical techniques and optimized prosthesis design.

[0003] In many traditional knee replacement surgeries, the prosthesis relies on bone cement for fixation. Bone cement, a polymethyl methacrylate (PMMA)-based polymer, is used to fill the gap between the prosthesis and the bone and provide immediate stability for the prosthesis. Although the initial effect of the bone cement fixation method is good, there are several disadvantages in the long run: for example, the use of bone cement may cause local temperature increase, affecting the surrounding bone tissue; bone cement intervention may cause bone marrow damage, thereby affecting the function of the immune system; in addition, in patients with osteoporosis or poor bone quality, long-term use may cause prosthesis loosening, and when surgical revision is required, the removal of bone cement may cause further bone defects. Utility Model Content

[0004] The purpose of the utility model is to provide a biological fixation type tibial prosthesis component in order to overcome the defects of the prior art, reduce the damage to the bone marrow, and maintain the integrity of the bone marrow cavity, thereby reducing the impact on the immune system.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] The utility model provides a biological fixation type tibial prosthesis component, comprising a prosthesis body and a mounting positioning plate;

[0007] The prosthesis body includes a plate body, a column arranged on the plate body, and a plurality of arc-shaped strips arranged around the column, wherein the column and the arc-shaped strips are used to be installed on the tibia;

[0008] The installation positioning plate is provided with a column positioning hole and an arc strip positioning hole, which respectively match the position and size of the column and the arc strip, and the installation positioning plate is used for positioning the openings on the tibia.

[0009] Furthermore, the plate body, the columns and the curved strips are an integrally formed structure.

[0010] Furthermore, the plate body, columns and curved strips are all made of biocompatible materials.

[0011] Furthermore, the plate body, the column and the curved strip plate are all made of one of tantalum metal, cobalt-chromium-molybdenum alloy tantalum metal composite material and cobalt-chromium-molybdenum alloy tantalum coating material.

[0012] Furthermore, four arc-shaped strips are provided around the column.

[0013] Furthermore, the plate body is an elliptical plate structure, and the column is arranged at the center of the plate body.

[0014] Furthermore, the arc-shaped strips are evenly distributed around the columns.

[0015] Furthermore, the arc-shaped strip is a circular arc-shaped strip, and the central angle corresponding to the circular arc is 90° to 180°.

[0016] Furthermore, the diameter of the column is 5 mm to 20 mm, and the length is 5 mm to 50 mm;

[0017] The thickness of the arc-shaped strip is 0.5 mm to 3 mm, and the height is 1 mm to 20 mm.

[0018] Furthermore, the plate body is provided with a plurality of protrusions, and the protrusions match the grooves provided on the tibia;

[0019] The installation positioning plate is also provided with a groove positioning hole, and the groove positioning hole matches the position and size of the groove.

[0020] Compared with the prior art, the utility model has the following technical advantages:

[0021] 1) Biomechanical optimization: By combining the fixed column and the curved fixation plate, the prosthesis performs better biomechanically and provides a more uniform tibial force distribution, thereby reducing the risk of prosthesis loosening.

[0022] 2) Simplification of surgical revision: Since the use of bone cement is reduced, the prosthesis of the utility model is easier to remove when revision is required, reducing the risk of bone defects during surgery.

[0023] 3) Improved biocompatibility: Compared with traditional bone cement prostheses, the prosthesis of the utility model pays more attention to biocompatibility in terms of materials and design, reducing damage to the bone marrow and the impact on the immune system.

[0024] 4) The technical content of the utility model is not only innovative in theory, but also can provide a safer and more effective knee replacement solution in practical application. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the top view of a prosthesis main body in the utility model;

[0026] Figure 2 It is a side view structural diagram of the prosthesis main body in the utility model;

[0027] Figure 3 This is a schematic diagram of the structure of the positioning plate installed in the utility model;

[0028] Figure 4 It is a schematic diagram of the top view of another prosthesis main body in the utility model.

[0029] In the figure: 1, prosthesis body, 2, installation positioning plate, 10, plate body, 11, column, 12, arc-shaped strip, 13, protrusion, 21, column positioning hole, 22, arc-shaped strip positioning hole. DETAILED DESCRIPTION

[0030] In view of the limitations of traditional methods, the biological fixation type tibial prosthesis of the present invention represents a major technological advancement. This type of prosthesis uses biocompatible materials and directly fuses with the patient's bones through its specially designed surface structure (such as the central column and the surrounding curved biological fixation plate), thereby providing long-term stability. This design reduces damage to the bone marrow and maintains the integrity of the bone marrow cavity, thereby reducing the impact on the immune system. In addition, compared to a simple biological fixation column, the combination of the fixation column and the curved fixation plate provides a better biomechanical distribution, making the tibia more evenly stressed and reducing the risk of prosthesis loosening. Especially for patients with poor bone quality, such as osteoporosis patients, this design can provide more effective bone integration, thereby improving the long-term stability and success rate of the prosthesis.

[0031] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. Any features such as preparation means, materials, structures or composition ratios not clearly described in this technical solution are considered to be common technical features disclosed in the prior art.

[0032] Example 1

[0033] The utility model provides a biological fixation type tibial prosthesis component, comprising a prosthesis body 1 and a mounting positioning plate 2. Figure 1 and 2 .

[0034] The prosthesis body 1 comprises a plate body 10, a column 11 arranged on the plate body 10, and a plurality of arcuate strips 12 arranged around the column 11. The column 11 and the arcuate strips 12 are used for being installed on the tibia.

[0035] The plate body 10, the column 11, and the curved strip 12 are an integrally formed structure. The plate body 10, the column 11, and the curved strip 12 are all made of biocompatible materials. In specific implementation, the plate body 10, the column 11, and the curved strip 12 are all made of tantalum metal, or a cobalt-chromium-molybdenum alloy tantalum metal composite material, or a cobalt-chromium-molybdenum alloy tantalum coating material. Tantalum metal, cobalt-chromium-molybdenum alloy tantalum metal composite material, and cobalt-chromium-molybdenum alloy tantalum coating material are all commercial materials in the prior art. The selection of such existing materials ensures good bone integration, excellent mechanical strength, and corrosion resistance.

[0036] In a specific implementation, four arc-shaped strips 12 are provided around the column 11. The plate body 10 is an elliptical plate structure, and the column 11 is provided at the center of the plate body 10. The arc-shaped strips 12 are evenly distributed around the column 11. The arc-shaped strips 12 are circular arc-shaped strips, and the central angle corresponding to the circular arc is 90° to 180°. The diameter of the column 11 is 5mm to 20mm, and the length is 5mm to 50mm; the thickness of the arc-shaped strips 12 is 0.5mm to 3mm, and the height is 1mm to 20mm. This design aims to achieve a better biological fixation effect and disperse the force on the tibia, thereby improving the stability and durability of the prosthesis.

[0037] See also Figure 3 The installation positioning plate 2 is provided with a column positioning hole 21 and an arc strip positioning hole 22, and the column positioning hole 21 and the arc strip positioning hole 22 respectively match the position and size of the column 11 and the arc strip 12, and the installation positioning plate 2 is used for positioning the openings on the tibia.

[0038] Installation steps: During the operation, first use the locator 2 to accurately drill holes and grooves on the tibia, then remove the locator 2, apply an appropriate amount of bone cement to the back of the prosthesis (not on the column and fixation plate), and finally use a specific striking technique to accurately embed the prosthesis into the preset position.

[0039] Knee replacement surgery is a common and effective treatment method used to restore joint mobility and relieve pain. With the advancement of medical technology, the requirements for prosthetic materials and designs are increasing, especially in terms of providing long-term stability and reducing the impact on the patient's body. Therefore, the development of a new type of tibial prosthesis that can both provide the necessary mechanical support and promote integration with the patient's bones is crucial to improving the success rate of surgery and the quality of postoperative recovery of patients. The innovation of the utility model lies in its unique design concept and installation method, which not only improves the degree of integration of the prosthesis with the bone, but also protects the patient's bone marrow and immune system to a great extent. Compared with traditional bone cement-fixed tibial prostheses, this new prosthesis of the utility model is more suitable for patients with poor bone environment such as osteoporosis, can effectively avoid long-term loosening of the prosthesis, and because the use of bone cement is reduced, it is conducive to future knee surgery revision.

[0040] The technology of this utility model lies in its innovative design, especially the breakthrough in biological fixation technology and surgical installation method, which provides a more advanced and effective solution for knee replacement surgery. This new tibial prosthesis is particularly suitable for patients with poor bone environment, such as osteoporosis patients, and in cases where traditional prostheses may have long-term loosening or bone cement-related problems.

[0041] Example 2

[0042] Compared with Example 1, see Figure 4 The plate body 10 is also provided with a plurality of protrusions 13, the function of which is to enhance the contact stability, and the protrusions 13 match the grooves opened on the tibia; the mounting positioning plate 2 is also provided with groove positioning holes, and the groove positioning holes match the position and size of the grooves.

[0043] The above description of the embodiments is to facilitate the understanding and use of the utility model by those skilled in the art. It is obvious that those familiar with the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the utility model is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of the utility model without departing from the scope of the utility model should be within the scope of protection of the utility model.

Claims

1. A biological fixation type tibial prosthesis component, characterized in that: It comprises a prosthesis body (1) and a mounting positioning plate (2); The prosthesis body (1) comprises a plate body (10), a column (11) arranged on the plate body (10), and a plurality of arc-shaped strips (12) arranged around the column (11); the column (11) and the arc-shaped strips (12) are used for being installed on the tibia; The installation positioning plate (2) is provided with a column positioning hole (21) and an arc strip positioning hole (22), and the column positioning hole (21) and the arc strip positioning hole (22) respectively match the position and size of the column (11) and the arc strip (12), and the installation positioning plate (2) is used for positioning the opening on the tibia.

2. A biological fixation type tibial prosthesis component according to claim 1, characterized in that: The plate body (10), the upright column (11) and the arc-shaped strip plate (12) are an integrally formed structure.

3. The biological fixation type tibial prosthesis component according to claim 1, characterized in that: The plate body (10), the upright column (11) and the curved strip plate (12) are all made of biocompatible materials.

4. The biological fixation type tibial prosthesis component according to claim 1, characterized in that: The plate body (10), the column (11), and the arc-shaped strip plate (12) are all made of one of tantalum metal, cobalt-chromium-molybdenum alloy tantalum metal composite material, and cobalt-chromium-molybdenum alloy tantalum coating material.

5. The biological fixation type tibial prosthesis component according to claim 1, characterized in that: Four arc-shaped strips (12) are arranged around the upright column (11).

6. The biological fixation type tibial prosthesis component according to claim 5, characterized in that: The plate body (10) is an elliptical plate structure, and the column (11) is arranged at the center of the plate body (10).

7. The biological fixation type tibial prosthesis component according to claim 6, characterized in that: The arc-shaped strips (12) are evenly distributed around the upright posts (11).

8. The biological fixation type tibial prosthesis component according to claim 1, characterized in that: The arc-shaped strip plate (12) is an arc-shaped strip plate, and the central angle corresponding to the arc is 90° to 180°.

9. The biological fixation type tibial prosthesis component according to claim 8, characterized in that: The column (11) has a diameter of 5 mm to 20 mm and a length of 5 mm to 50 mm; The thickness of the arc-shaped strip plate (12) is 0.5 mm to 3 mm, and the height is 1 mm to 20 mm.

10. The biological fixation type tibial prosthesis component according to claim 1, characterized in that: The plate body (10) is also provided with a plurality of protrusions (13), and the protrusions (13) match the grooves provided on the tibia; The installation positioning plate (2) is also provided with a groove positioning hole, and the groove positioning hole matches the position and size of the groove.

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