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Single-condyle artificial knee joint

An artificial knee joint, unicondylar technology, applied in knee joints, elbow joints, joint implants, etc., can solve the problems of affecting MRI, easily induced inflammatory response, stress shielding, etc., to extend service life, improve Subjective perception, effect of good biological performance

Inactive Publication Date: 2016-06-08
TONGJI HOSPITAL ATTACHED TO TONGJI MEDICAL COLLEGE HUAZHONG SCI TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is that the artificial knee joint prosthesis in the prior art is easy to induce inflammatory reaction, osteolysis and lead to prosthesis loosening due to easy wear and tear, and it will cause stress shielding problems and has certain toxicity to the body. And affect the above-mentioned defects of NMR forming, provide a high wear resistance, good biocompatibility and good cushioning performance, can better simulate the biological performance of normal knee joints, improve the patient's subjective experience, prolong the Unicompartmental artificial knee joint with long service life and reduced revision rate

Method used

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Embodiment Construction

[0029] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0030] In a preferred embodiment of the present invention, a unicompartmental artificial knee joint, such as figure 1 As shown, the femoral condyle 1, pad 2 and tibial support 3 that are connected successively are included. The articular surface of the femoral condyle 1 and the upper and lower tables of the pad 2 are all polished. The articular surface is sliding fit, and the lower surface of the pad 2 forms a sliding fit with the surface of the tibial tray 3, and the pad 2 can slide and rotate within a certain range on the surface of the tibial tray 3; the femoral condyle 1, pad 2 and The tibial ...

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Abstract

The invention discloses a single-condyle artificial knee joint which comprises a femur condyle, a liner and a tibia support which are sequentially connected. The upper surface of the liner is in sliding fit with the joint face of the femur condyle. The lower surface of the liner is in sliding fit with the surface of the tibia support. The femur condyle, the liner and the tibia support are all made from poly(ether ether ketone) or derivatives of poly(ether ether ketone). The single-condyle artificial knee joint has high wear resistance, high biocompatibility and good buffer performance, the biolotical properties of normal knee joints can be better simulated, the subjective feeling of patients can be improved, the single-condyle artificial knee joint is long in service life and low in overhaul rate, metal ion toxicity and anaphylactic reaction can not be generated, and perspective developing and nuclear magnetic resonance imaging can not be influenced.

Description

technical field [0001] The invention relates to the field of medical rehabilitation equipment, in particular to a unicondylar artificial knee joint. Background technique [0002] The knee joint is the largest joint in the human body with the most complex structure and more chances of injury. Joint replacement is currently a common method to improve knee joint function, which can relieve joint pain, correct joint deformities, and restore joint mobility. The commonly used material for artificial knee prosthesis is the CoCrMo alloy / UHMWPE friction interface. This interface has good friction performance and ultra-high molecular weight polyethylene provides a certain cushioning performance, but the particles produced by the wear of polyethylene after long-term use It can induce inflammatory response, induce osteolysis and lead to loosening of the prosthesis; secondly, the CoCrMo alloy has a large elastic modulus, which will cause stress shielding problems; thirdly, the CoCrMo al...

Claims

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Application Information

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IPC IPC(8): A61F2/38
CPCA61F2/3836A61F2210/00
Inventor 肖骏靳忠民朱元莉黄登峰朱皓
Owner TONGJI HOSPITAL ATTACHED TO TONGJI MEDICAL COLLEGE HUAZHONG SCI TECH
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