Single-condyle knee joint prosthesis
A knee joint prosthesis, unicondylar technology, applied in the field of medical equipment, can solve problems such as easy dislocation of tibial pads and tibial plateau, and achieve the effect of solving easy dislocation and preventing dislocation
Pending Publication Date: 2018-01-23
BEIJING AKEC MEDICAL
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Problems solved by technology
[0004] The main purpose of the present invention is to provide a unicondylar knee joint prosthesis to solve the problem of easy dislocation between the tibial spacer and the tibial plateau of the movable platform type unicondylar knee joint prosthesis in the prior art
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[0028] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.
[0029] According to the unicompartmental knee joint prosthesis of the embodiment of the present invention, such as Figure 1 to Figure 6 Shown, comprise: femoral condyle 10, tibial spacer 20 and tibial plateau 30, femoral condyle has inner surface 11 and first articular surface 12; Tibial spacer 20 has second articular surface 21 and bottom surface 22; Tibial plateau 30 has The upper surface 31 and the lower surface 32; wherein, the first articular surface 12 of the femoral condyle 10 fits with the second articular surface 21 of the tibial spacer 20, and the bottom surface 22 of the tibial spacer 20 and the upper surface 31 of the tibial plateau 30 can be Relatively movable, there is a limitin...
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The invention provides a single-condyle knee joint prosthesis. The prosthesis comprises a femoral condyle, a tibia spacer and a tibia platform, and the femoral condyle is provided with an inner mold surface and a first joint surface; the tibia spacer is provided with a second joint surface and a bottom surface; the tibia platform is provided with an upper surface and a lower surface; the first joint surface of the femoral condyle is attached to the second joint surface of the tibia spacer, the bottom surface of the tibia spacer is relatively movably connected with the upper surface of the tibia platform, and a limit structure is arranged between the bottom surface of the tibia spacer and the upper surface of the tibia platform and used for limiting the displacement amount between the tibiaspacer and the tibia platform. Accordingly, the dislocation of the tibia spacer can be effectively avoided, and the problem is solved that dislocation between the tibia spacer and the tibia platformof the movable-platform-type single-condyle knee joint prosthesis in the prior art is easily caused.
Description
technical field [0001] The invention relates to the field of medical equipment, 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. For example, less trauma, less blood loss, shorter operation time, faster recovery of patients, etc. [0003] At present, there are two typical types of unicondylar knee prosthesis: fixed platform and movable platform. The movable platform type unicondylar knee prosthesis is widely used in clinical practice. The femoral condyle is highly matched with the tibial spacer, and the tibial spacer and the tibial plateau can move freely, which greatly facilitates the installation during surgery and reduces the long-term Polyethylene abrasion. The disadvantage is that there is no constraint be...
Claims
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IPC IPC(8): A61F2/38
Inventor 刘昆玺
Owner BEIJING AKEC MEDICAL