Anatomical arc-shaped ankle joint prosthesis

Abstract

The utility model discloses an anatomical arc-shaped ankle joint prosthesis, which belongs to the technical field of joint prostheses and comprises a first prosthesis plate, and a first coating plate is arranged on the bottom surface of the first prosthesis plate. A fixing plate is arranged on the top face of the first prosthesis plate, a second prosthesis plate is arranged on the top face of the fixing plate, and a second coating plate is arranged on the top of the second prosthesis plate. According to the arc-shaped ankle joint prosthesis, through the arrangement of the first five-star column and the second five-star column, compared with a traditional arc-shaped ankle joint prosthesis, the installation directions of the first five-star column and the second five-star column are changed through the design, so that the arc-shaped ankle joint prosthesis can be installed from a front approach, the situation that a fibula needs to be broken in a traditional operation is avoided, and operation wounds are reduced; postoperative rehabilitation is promoted, the front-back width of the ankle joint prosthesis is changed, the ankle joint prosthesis better conforms to physiological anatomy of a human body, the contact area of a bone and the prosthesis is increased, pressure borne by the surface of the prosthesis is dispersed, and prosthesis collapse caused by strength concentration is reduced.

Description

Technical Field

[0001] This invention belongs to the field of joint prosthesis technology, and particularly relates to an anatomically curved ankle joint prosthesis. Background Technology

[0002] The ankle joint is formed by the articular surfaces of the lower ends of the tibia and fibula and the trochlea of ​​the talus. It is also known as the talus-lower leg joint. When the ankle joint is damaged, it is usually necessary to replace it with an ankle joint prosthesis to compensate for the loss of some limb functions in the injured person.

[0003] Currently, ankle prostheses enable disabled individuals to regain some self-care and work abilities. However, traditional curved ankle prostheses require lateral approach for installation, which necessitates breaking the fibula, resulting in significant trauma and a long operation time. To address these issues, an anatomical curved ankle prosthesis that can be installed via an anterior approach, without breaking the fibula and causing minimal trauma, is needed. Utility Model Content

[0004] The purpose of this invention is to solve the problem that traditional arc-shaped ankle joint prostheses require lateral approach for installation, which involves breaking the fibula and causing significant trauma, and to propose an anatomical arc-shaped ankle joint prosthesis.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an anatomical arc-shaped ankle joint prosthesis, comprising a first prosthesis plate, a first coating plate disposed on the bottom surface of the first prosthesis plate, a fixing plate disposed on the top surface of the first prosthesis plate, a second prosthesis plate disposed on the top surface of the fixing plate, and a second coating plate disposed on the top of the second prosthesis plate.

[0006] As a further description of the above technical solution:

[0007] The first coating plate has a first five-star pillar on its bottom surface, and the second coating plate has a second five-star pillar on its bottom surface.

[0008] As a further description of the above technical solution:

[0009] One end of the first coating plate is installed in the same direction as one end of the first five-star pillar, and one end of the second five-star pillar is installed in the same direction as one end of the second coating plate.

[0010] As a further description of the above technical solution:

[0011] The first five-star pillar has a first five-star hole, and the second five-star pillar has a second five-star hole.

[0012] As a further description of the above technical solution:

[0013] The width of one end of the first coating plate and the first prosthetic plate is longer than the width of the other end, and the width of one end of the fixing plate and the second prosthetic plate is longer than the width of the other end.

[0014] As a further description of the above technical solution:

[0015] The width of one end of the second coating plate is longer than the width of the other end of the second coating plate.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0017] 1. In this utility model, by setting a first five-star pillar and a second five-star pillar, during installation, since one end of the first coating plate is installed in the same direction as one end of the first five-star pillar, and one end of the second five-star pillar is installed in the same direction as one end of the second coating plate, installation can be performed from the front. At the same time, by changing the front-back width of the ankle joint prosthesis during installation, the bone contact area is increased, the pressure is dispersed, and the bone healing area is larger, making it more robust after long-term use. Through this design, compared with the traditional arc-shaped ankle joint prosthesis, the installation direction of the first and second five-star pillars is changed, so that the arc-shaped ankle joint prosthesis can be installed from the front, avoiding the need to break the fibula in traditional surgery, reducing surgical trauma, promoting postoperative recovery, changing the front-back width of the ankle joint prosthesis to better conform to the physiological anatomy of the human body, increasing the contact area between the bone and the prosthesis, dispersing the pressure on the prosthesis surface, and reducing prosthesis collapse caused by force concentration.

[0018] 2. In this utility model, by providing a first five-star hole and a second five-star hole, after installation, the addition of the first five-star hole and the second five-star hole promotes bone ingrowth into the hole, so that the prosthesis and bone become one, and it will be more robust after long-term use. Through this design, the added first five-star hole and second five-star hole can promote bone tissue ingrowth into the hole, so that the prosthesis and ankle joint bones become one, thereby increasing the long-term stability of the prosthesis. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of an anatomically curved ankle joint prosthesis.

[0020] Figure 2 This is a side view of the first five-star column in an anatomical arc-shaped ankle joint prosthesis.

[0021] Figure 3 This is a schematic diagram of the side view of the second five-star column in an anatomical arc-shaped ankle joint prosthesis.

[0022] Legend:

[0023] 1. First prosthetic plate; 2. First coated plate; 3. First five-star pillar; 4. Fixation plate; 5. Second prosthetic plate; 6. Second coated plate; 7. Second five-star pillar; 8. Second five-star hole; 9. First five-star hole. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0025] Please see Figure 1-3 This utility model provides a technical solution: an anatomical arc-shaped ankle joint prosthesis, including a first prosthesis plate 1, a first coating plate 2 provided on the bottom surface of the first prosthesis plate 1, a fixing plate 4 provided on the top surface of the first prosthesis plate 1, a second prosthesis plate 5 provided on the top surface of the fixing plate 4, and a second coating plate 6 provided on the top of the second prosthesis plate 5.

[0026] The first coating plate 2 has a first five-star pillar 3 on its bottom surface, and the second coating plate 6 has a second five-star pillar 7 on its bottom surface. One end of the first coating plate 2 and one end of the first five-star pillar 3 are installed in the same direction. One end of the second five-star pillar 7 and one end of the second coating plate 6 are installed in the same direction. The width of one end of the first coating plate 2 and the first prosthetic plate 1 is longer than the width of the other end. The width of one end of the fixing plate 4 and the second prosthetic plate 5 is longer than the width of the other end. The width of one end of the second coating plate 6 is longer than the width of the other end of the second coating plate 6.

[0027] The specific implementation method is as follows: During installation, since one end of the first coating plate 2 is installed in the same direction as one end of the first five-star column 3, and one end of the second five-star column 7 is installed in the same direction as one end of the second coating plate 6, the installation can be carried out from the front approach. At the same time, by changing the front and rear width of the ankle joint prosthesis during installation, the bone contact area is increased, the pressure is dispersed, and the bone healing area is larger, which will make it stronger after long-term use.

[0028] The first five-star pillar 3 is provided with a first five-star hole 9, and the second five-star pillar 7 is provided with a second five-star hole 8;

[0029] The specific implementation method is as follows: After installation, the first five-star hole 9 and the second five-star hole 8 are added to promote bone ingrowth into the holes, so that the prosthesis and bone become integrated and will be more robust after long-term use.

[0030] Working principle: During installation, since one end of the first coating plate 2 is installed in the same direction as one end of the first five-star post 3, and one end of the second five-star post 7 is installed in the same direction as one end of the second coating plate 6, installation can be performed from the front. At the same time, by changing the front and back width of the ankle joint prosthesis during installation, the bone contact area is increased, the pressure is distributed, and the bone healing area is larger, which will make it stronger after long-term use. After installation, the addition of the first five-star hole 9 and the second five-star hole 8 promotes bone ingrowth into the holes, so that the prosthesis and bone become integrated, which will make it stronger after long-term use.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An anatomically curved ankle joint prosthesis, comprising a first prosthetic plate (1), characterized in that: A first coating plate (2) is provided on the bottom surface of the first prosthetic plate (1), a fixing plate (4) is provided on the top surface of the first prosthetic plate (1), a second prosthetic plate (5) is provided on the top surface of the fixing plate (4), and a second coating plate (6) is provided on the top of the second prosthetic plate (5).

2. An anatomical arcuate ankle prosthesis according to claim 1, wherein, The bottom surface of the first coating plate (2) is provided with a first five-star pillar (3), and the bottom of the second coating plate (6) is provided with a second five-star pillar (7).

3. An anatomical arcuate ankle prosthesis according to claim 2, wherein, One end of the first coating plate (2) is installed in the same direction as one end of the first five-star column (3), and one end of the second five-star column (7) is installed in the same direction as one end of the second coating plate (6).

4. An anatomical arcuate ankle prosthesis according to claim 3, wherein, The first five-star pillar (3) is provided with a first five-star hole (9), and the second five-star pillar (7) is provided with a second five-star hole (8).

5. An anatomical arcuate ankle prosthesis according to claim 4, wherein The width of one end of the first coating plate (2) and the first prosthesis plate (1) is longer than the width of the other end, and the width of one end of the fixing plate (4) and the second prosthesis plate (5) is longer than the width of the other end.

6. An anatomical arcuate ankle prosthesis according to claim 5, wherein, The width of one end of the second coating plate (6) is longer than the width of the other end of the second coating plate (6).

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