Knee joint multi-compartment replacement equipment containing oxide layer zirconium-niobium alloy

Abstract

The invention provides a knee joint multi-compartment replacement device containing an oxide layer zirconium-niobium alloy, and belongs to the technical field of artificial joints. The knee joint multi-compartment replacement device containing the oxide layer zirconium-niobium alloy comprises an inner side compartment tibial plateau support prosthesis and an outer side compartment tibial plateau support prosthesis; the upper cover plate is in contact with the bottom of the medial and lateral compartment tibial plateau support prosthesis; the lower tibial plateau pad prosthesis is arranged on the lower side of the upper cover plate, and the knee joint multi-compartment replacement equipment is made of zirconium-niobium alloy materials containing oxide layers, so that the biocompatibility of the prosthesis is remarkably improved. The material not only can reduce rejection reaction with human tissues, but also has excellent corrosion resistance and wear resistance. Therefore, the patient can recover faster after the operation, and the inflammation or infection risk caused by materials is reduced. In addition, the prosthesis can bear long-term use pressure through high-wear-resistance surface treatment, the service life of the prosthesis is prolonged, and the requirement for secondary operation is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of artificial joints, and in particular relates to a multi-compartment replacement device for a knee joint containing an oxide layer zirconium-niobium alloy. Background Art

[0002] Knee prosthesis is an assistive device designed for people who have lost part of their limbs below or above the knee due to illness, accidental injury, etc. It can help patients regain a certain degree of walking ability and the ability to take care of themselves in daily life. The design and manufacturing technology of knee prosthesis has been continuously improved with the advancement of science and technology, and now there are many types of products available on the market.

[0003] The material of the existing knee joint implant prosthesis is cobalt-chromium-molybdenum alloy. Most of the knee joint implants on the market are bone cement type prostheses without porous tantalum structure filling blocks. Summary of the invention

[0004] The purpose of the present invention is to provide a multi-compartment knee replacement device containing an oxide layer zirconium-niobium alloy, aiming to solve the problem that the material of the knee joint implant prosthesis in the prior art is cobalt-chromium-molybdenum alloy, and most of the knee joint implants on the market currently use bone cement prostheses without a porous tantalum structure filling block for use.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A multi-compartment knee replacement device containing an oxide layer zirconium-niobium alloy, comprising:

[0007] Medial and lateral compartment tibial plateau prosthesis;

[0008] An upper cover plate, the upper cover plate contacts the bottom of the medial and lateral compartment tibial plateau support prosthesis;

[0009] A lower tibial plateau pad prosthesis, wherein the lower tibial plateau pad prosthesis is arranged at the lower side of the upper cover plate, and the upper cover plate is embedded in the lower tibial plateau pad prosthesis;

[0010] A first positioning rod is fixedly connected to one side of the medial and lateral compartment tibial plateau support prosthesis.

[0011] As a preferred solution of the present invention, a patellofemoral joint prosthesis is provided on one side of the medial and lateral compartment tibial plateau support prosthesis, and a plurality of second positioning rods are fixedly connected to one end of the patellofemoral joint prosthesis.

[0012] As a preferred solution of the present invention, the lower tibial plateau pad prosthesis matches the upper cover plate.

[0013] As a preferred solution of the present invention, the medial and lateral compartment tibial plateau support prosthesis and the first positioning rod, the patellofemoral joint prosthesis and the second positioning rod are all designed by 3D printing as an integrated molding.

[0014] As a preferred solution of the present invention, a porous tantalum structure filling block is sleeved on the surface of each of the second positioning rods.

[0015] As a preferred solution of the present invention, the medial and lateral compartment tibial plateau support prosthesis, the upper cover plate, the lower tibial plateau pad prosthesis and the patellofemoral joint prosthesis are all made of zirconium-niobium alloy material containing an oxide layer to enhance biocompatibility and wear resistance.

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

[0017] 1. The use of zirconium-niobium alloy materials containing an oxide layer to manufacture multi-compartment knee replacement devices significantly improves the biocompatibility of the prosthesis. This material not only reduces the rejection reaction with human tissue, but also has excellent corrosion and wear resistance. Therefore, patients can recover faster after surgery and reduce the risk of inflammation or infection caused by the material. In addition, the highly wear-resistant surface treatment enables the prosthesis to withstand long-term use pressure, prolonging the service life of the prosthesis and reducing the need for secondary surgery.

[0018] 2. Through the integrated design of 3D printing technology, the knee replacement device can be customized according to the specific anatomical structure of each patient. This not only ensures the perfect fit between the prosthesis and the patient's bones, but also optimizes the mechanical distribution during joint movement, thereby improving the patient's comfort and range of motion. The personalized patellofemoral joint prosthesis and the medial and lateral compartment tibial plateau support prosthesis can better simulate the function of natural joints, allowing patients to walk, go up and down stairs and other daily activities more freely, greatly improving the quality of life. The integrated design of the first positioning rod and the second positioning rod provides surgeons with a simpler and more precise installation method. These positioning rods are closely integrated with the prosthesis body, reducing the assembly steps during surgery and reducing the complexity of the operation. At the same time, since each component is tailored to the specific needs of the patient, the doctor can make detailed plans before surgery and achieve more accurate positioning and fixation during surgery. Such a design not only shortens the operation time, but also reduces the risk of surgery and ensures better treatment results.

[0019] 3. Zirconium-niobium alloy has excellent corrosion resistance, mechanical properties and good biocompatibility, and is gradually used in the field of medical devices. Zirconium-niobium alloy can react with elements such as N, C, and O to form a hard oxide layer on the surface, which has excellent wear resistance and low wear rate, can reduce the wear of soft materials, that is, it has excellent wear resistance at the joint surface interface; and the oxide layer can reduce the release of metal ions and has excellent biocompatibility, that is, it has excellent biocompatibility at the bone integration interface.

[0020] 4. Porous tantalum has excellent chemical stability and biocompatibility, and basically will not decompose other toxic and harmful substances in the acid-base environment of the human body, thus ensuring the safety after implantation. The oxide-layer zirconium-niobium alloy partitioned trabecular single-compartment femoral condyle of the present invention has low artifacts, little interference with nuclear magnetic resonance, and can be subjected to nuclear magnetic resonance detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0022] Figure 1 It is a front view of the present invention;

[0023] Figure 2 It is a side view of the present invention;

[0024] Figure 3 It is a stereogram in the present invention;

[0025] Figure 4 It is the first explosion diagram in the present invention;

[0026] Figure 5 This is the second explosion diagram in the present invention.

[0027] In the figure: 1. patellofemoral joint prosthesis; 2. medial and lateral compartment tibial plateau support prosthesis; 3. lower tibial plateau pad prosthesis; 4. first positioning rod; 5. porous tantalum structure filling block; 6. second positioning rod; 7. upper cover plate. DETAILED DESCRIPTION

[0028] 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, not all of the embodiments. 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.

[0029] Example 1

[0030] See also Figure 1-Figure 5 , the present invention provides the following technical solutions:

[0031] A multi-compartment knee replacement device containing an oxide layer zirconium-niobium alloy, comprising:

[0032] Medial and lateral compartment tibial plateau prosthesis 2;

[0033] An upper cover plate 7, the upper cover plate 7 is in contact with the bottom of the medial and lateral compartment tibial plateau support prosthesis 2;

[0034] The lower tibial plateau pad prosthesis 3 is arranged on the lower side of the upper cover plate 7, and the upper cover plate 7 is embedded in the lower tibial plateau pad prosthesis 3;

[0035] A first positioning rod 4, the first positioning rod 4 is fixedly connected to one side of the medial and lateral compartment tibial plateau support prosthesis 2;

[0036] A patellofemoral joint prosthesis 1 is provided on one side of the medial and lateral compartment tibial plateau support prosthesis 2, and a plurality of second positioning rods 6 are fixedly connected to one side end of the patellofemoral joint prosthesis 1.

[0037] In a specific embodiment of the present invention, the device has two groups of medial and lateral compartment tibial plateau support prostheses 2, the left one is the outer one and the right one is the inner one, which have high hardness and wear resistance, ensuring that they can fit the patient's anatomical structure well, wherein the upper cover plate 7 and the lower tibial plateau pad prosthesis 3 also have two, and the upper cover plate 7 is in contact with the medial and lateral compartment tibial plateau support prosthesis 2 and in close contact with it. The same zirconium-niobium alloy material is also used to ensure the stability of the entire component, and the lower tibial plateau pad prosthesis 3 is combined with the upper cover plate 7, which can be firmly embedded therein and is not easy to fall off or shift. The first positioning rod 4 is used to accurately adjust and fix the prosthesis during surgery. The patellofemoral joint prosthesis 1 is set between the two medial and lateral compartment tibial plateau support prostheses 2 to replace the damaged contact surface between the patella and the femur. In order to enhance its stability and adaptability, a plurality of second positioning rods 6 are also provided at one end of the patellofemoral joint prosthesis 1, which help to better control the position during implantation and maintain the correct posture during postoperative recovery. Advanced surface treatment technology is used to form a micron-thick oxide layer on the key contact surface, which not only improves the corrosion resistance of the material itself, but also enhances the biocompatibility between the prosthesis and the surrounding tissues. In addition, through the careful design of each component and the precise coordination between them, this knee multi-compartment replacement system can provide patients with a more natural and smooth movement experience, while extending the service life of the prosthesis.

[0038] For details, please refer to Figure 1-Figure 5 , the lower tibial plateau pad prosthesis 3 is matched with the upper cover plate 7.

[0039] In this embodiment: the upper surface of the tibial plateau pad prosthesis 3 has a cavity, whose shape and size are completely consistent with the lower surface of the upper cover plate 7, so as to ensure that the upper cover plate 7 is stably embedded therein to prevent movement during daily activities. A small protrusion is provided on the lower edge of the upper cover plate 7, and the structure can be combined with the corresponding groove inside the tibial plateau pad prosthesis 3 to form a physical locking effect.

[0040] For details, please refer to Figure 1-Figure 5The medial and lateral compartment tibial plateau support prosthesis 2 and the first positioning rod 4, the patellofemoral joint prosthesis 1 and the second positioning rod 6 are all designed by 3D printing integrated molding.

[0041] In this embodiment: the medial and lateral compartment tibial plateau support prosthesis 2 and the first positioning rod 4, the patellofemoral joint prosthesis 1 and the second positioning rod 6 are directly integrally formed on one side through 3D printing technology. The integrated design reduces potential errors in the assembly process and improves the position accuracy during surgical installation.

[0042] For details, please refer to Figure 1 A porous tantalum structure filling block 5 is sleeved on the surface of each second positioning rod 6 .

[0043] In this embodiment: the matrix of the porous tantalum structure filling block 5 is made of mesh glassy carbon, and the surface is covered with a tantalum metal porous structure layer formed by a vapor deposition process, which has excellent compressive resistance; the compressive yield strength of the prosthesis part of the knee joint implant is enhanced, and the plasticity is enhanced.

[0044] For details, please refer to Figure 1-Figure 5 The medial and lateral compartment tibial plateau support prosthesis 2, the upper cover plate 7, the lower tibial plateau pad prosthesis 3 and the patellofemoral joint prosthesis 1 are all made of zirconium-niobium alloy material containing an oxide layer to enhance biocompatibility and wear resistance.

[0045] In this embodiment: the component is integrally formed by 3D printing technology using a zirconium-niobium alloy material containing an oxide layer. It is individually designed according to the patient's specific anatomical structure to ensure optimal fit and support performance. Since the zirconium-niobium alloy has excellent mechanical strength and biocompatibility, it can effectively simulate the function of natural bones. The upper cover plate 7 is also made of the same zirconium-niobium alloy material containing an oxide layer and is realized by 3D printing technology. The upper cover plate is located at the bottom of the tibial plateau support prosthesis 2 in the medial and lateral compartments and is in close contact with it. Its surface is specially treated to form an oxide layer with a thickness of microns to improve wear resistance and corrosion resistance. The patellofemoral joint prosthesis 1 is used to replace the contact surface between the damaged patella and femur. It is also an integrally formed design using a zirconium-niobium alloy material containing an oxide layer, which helps to improve the durability of the prosthesis and reduce postoperative complications.

[0046] The working principle and usage process of the present invention are as follows: During surgical implantation, the doctor conducts a comprehensive assessment based on the patient's medical history and imaging data, determines the surgical plan, and discusses the expected results and potential risks with the patient. First, the medial and lateral compartment tibial plateau support prosthesis 2 and the first positioning rod 4 thereon are installed, then the upper cover plate 7 is placed, and then it is embedded in the lower tibial plateau pad prosthesis 3, and finally the patellofemoral joint prosthesis 1 and the second positioning rod 6 thereon are installed. The alignment and stability of the prosthesis are carefully checked, and fine-tuning is performed when necessary to ensure the best functional recovery effect. The incision is closed with absorbable sutures or surgical sutures, and the wound is protected with dressings.

[0047] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. 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 multi-compartment knee replacement device containing an oxide layer zirconium-niobium alloy, characterized in that: include: Medial and lateral compartment tibial plateau prosthesis (2); An upper cover plate (7), the upper cover plate (7) being in contact with the bottom of the medial and lateral compartment tibial plateau support prosthesis (2); A lower tibial plateau pad prosthesis (3), wherein the lower tibial plateau pad prosthesis (3) is arranged on the lower side of the upper cover plate (7), and the upper cover plate (7) is embedded in the lower tibial plateau pad prosthesis (3); A first positioning rod (4), the first positioning rod (4) being fixedly connected to one side of the medial and lateral compartment tibial plateau support prosthesis (2).

2. The multi-compartment knee replacement device of zirconium-niobium alloy containing oxide layer according to claim 1, characterized in that: A patellofemoral joint prosthesis (1) is provided on one side of the medial and lateral compartment tibial plateau support prosthesis (2), and a plurality of second positioning rods (6) are fixedly connected to one side end of the patellofemoral joint prosthesis (1).

3. The multi-compartment knee replacement device of the zirconium-niobium alloy containing an oxide layer according to claim 2, characterized in that: The lower tibial plateau pad prosthesis (3) matches the upper cover plate (7).

4. The multi-compartment knee replacement device of the zirconium-niobium alloy containing an oxide layer according to claim 3, characterized in that: The medial and lateral compartment tibial plateau support prosthesis (2) and the first positioning rod (4), the patellofemoral joint prosthesis (1) and the second positioning rod (6) are all designed by 3D printing as an integrated molding.

5. The multi-compartment knee replacement device of zirconium-niobium alloy containing oxide layer according to claim 4, characterized in that: A porous tantalum structure filling block (5) is sleeved on the surface of each of the second positioning rods (6).

6. The multi-compartment knee replacement device of zirconium-niobium alloy containing oxide layer according to claim 5, characterized in that: The medial and lateral compartment tibial plateau support prosthesis (2), the upper cover plate (7), the lower tibial plateau pad prosthesis (3) and the patellofemoral joint prosthesis (1) are all made of a zirconium-niobium alloy material containing an oxide layer to enhance biocompatibility and wear resistance.

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