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Organic polymer material dual-slide artificial knee joint

An artificial knee joint, organic polymer technology, applied in knee joints, elbow joints, joint implants, etc., to reduce wear problems, avoid bone resorption, and alleviate stress shielding problems.

Inactive Publication Date: 2015-11-11
JIANSU OKANI MEDICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the structural characteristics of the knee joint, the tibial tray bears the greatest load. It has never been used or mentioned in clinical practice or literature that other materials can be used for the tibial tray.

Method used

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  • Organic polymer material dual-slide artificial knee joint
  • Organic polymer material dual-slide artificial knee joint
  • Organic polymer material dual-slide artificial knee joint

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Embodiment Construction

[0037] 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.

[0038] Such as figure 1 , 2 Shown in and 3, a kind of organic macromolecular material double sliding artificial knee joint provided by the present invention comprises femoral condyle 1, tibial liner 2 and tibial support 3, wherein tibial support 3 comprises tibial support platform 4 and has the stable of certain section Wing positioning part 5, the stabilizing wing positioning part 5 is arranged below the tibial support platform 4 and is perpendicular to the tibial support platform 4, and is used to fix the tibial support 3, and then the whole artificial knee joint on the human skeleton; the lower...

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Abstract

An organic polymer material dual-slide artificial knee joint comprises a femur condyle and tibia holder made of PEEK or derivative thereof, and a tibia liner made of UHMWPE; the tibia holder comprises a platform and a stable wing positioning portion with certain cross section; the stable wing positioning portion is arranged below the platform and vertical to the platform; the top and bottom of the tibia liner are respectively jointed with the femur condyle and the platform of the tibia holder; the tibia liner is a dual-slide tibia liner, a slide surface of the femur condyle against the tibia liner and a slide surface of the tibia holder against the tibia liner are respectively a smooth surface. All implants of the organic polymer material dual-slide artificial knee joint contain no metal material, so no allergy problem will be caused by metal and metal corrosion; PEEK elastic modulus is matched with a natural bone so as to reduce stress shield problem; a wearing problems of a main slide friction surface of the PEEK femur condyle against the UHMWPE tibia liner can be reduced; a latent wearing problem of a secondary slide interface of the PEEK femur condyle against the UHMWPE tibia liner can be further reduced.

Description

technical field [0001] The invention relates to a medical rehabilitation device, more specifically, to a double-sliding artificial knee joint made of organic polymer materials. Background technique [0002] Since the 1980s, double-sliding artificial knee replacement has been widely used clinically (LaCourMT, SharmaA, CarrCB, KomistekRD, DennisDA. (2014) Confirmationoflong-terminvivobearingmobilityineightrotating-platformTKAs.ClinOrthopRelatRes.2014Sep;472(9):2766-73 ). Compared with the traditional single-sliding knee joint design, the double-sliding design has the advantages of low contact stress, small internal and external rotation resistance, and automatic reset. The double-sliding artificial knee joints that have been clinically used at present all use the combination of cobalt-chromium-molybdenum (CoCrMo) alloy and ultra-high molecular weight polyethylene (UHMWPE). The femoral condyle and tibial tray (tibial plateau) were constructed of CoCRMo alloy, and the rotatabl...

Claims

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Application Information

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IPC IPC(8): A61F2/38A61L27/16A61L27/50
CPCA61F2/38A61L27/16A61L27/50
Inventor 朱健徐龙伟
Owner JIANSU OKANI MEDICAL TECH CO LTD
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