Single-condyle knee joint prosthesis

A knee joint prosthesis, unicondylar technology, applied in the directions of knee joint, elbow joint, joint implant, etc., can solve problems such as easy dislocation, and achieve the effect of avoiding easy dislocation, avoiding dislocation, and improving reliability.

Pending Publication Date: 2019-12-06
BEIJING AKEC MEDICAL
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a unicondylar knee joint prosthesis to solve the problem of easy dislocation of the unicondylar knee joint prosthesis in the prior art

Method used

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  • Single-condyle knee joint prosthesis
  • Single-condyle knee joint prosthesis
  • Single-condyle knee joint prosthesis

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Embodiment Construction

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0024] Such as Figure 1 to Figure 4 As shown, the embodiment of the present invention provides a kind of unicondylar knee joint prosthesis, comprises: femoral condyle 10, and femoral condyle 10 comprises main body 11 and limiting structure 12, and main body 11 has the first articular surface ...

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Abstract

The invention provides a single-condyle knee joint prosthesis. A femoral condyle, a tibial pad and a tibial plateau are arranged in the single-condyle knee joint prosthesis, a main body of the femoralcondyle is used for being connected with the femur, a limit structure is arranged on the main body, and at least part of the limit structure bulges out of the edge of a first articular surface of themain body; and a second articular surface of the tibial pad is matched with the first articular surface, the limit structure is in limit fit with the side surface of the tibial pad, the tibial plateau is used for being connected with the tibia and matched with one side, away from the femoral condyle, of the tibial pad, and the tibial pad is movably arranged relative to the tibial plateau. According to the scheme, functions of the knee joint can be realized after the prosthesis is implanted into the body of the patient, furthermore, by means of limit fit of the limit structure and the tibial pad, the motion range of the tibial pad can be limited, so that the tibial pad is prevented from being separated from the femoral condyle or the tibial pad is prevented from being separated from the tibial plateau, the problem that the single-condyle knee joint prosthesis is prone to dislocation is solved, and the reliability of long-term implantation of the prosthesis is improved.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a unicondylar knee joint prosthesis. Background technique [0002] With the increasing concept of minimally invasive in clinic, unicondylar knee prosthesis is gradually favored by clinicians. In the treatment of anteromedial osteoarthritis, the unicondylar knee prosthesis has obvious advantages, such as less trauma, less blood loss, shorter operation time, and faster recovery of the patient. At present, there are two typical types of unicondylar knee prosthesis: fixed platform and movable platform. [0003] The movable platform unicompartmental knee prosthesis is widely used in clinical practice, which facilitates the installation during surgery and reduces the wear of the prosthesis. However, the existing unicompartmental knee prosthesis lacks constraints and is prone to dislocation. Once dislocation occurs, a second operation is required, which brings mental pain and ...

Claims

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Application Information

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IPC IPC(8): A61F2/38
CPCA61F2/3859A61F2/389
Inventor 刘昆玺
Owner BEIJING AKEC MEDICAL
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