Zirconium Oxide Surface Layers on Orthopaedic Devices to Increase Lifetime

骨科器械上的氧化锆表面层可延长使用寿命

• 批准号: 9260383
• 负责人: Stephen Bunker
• 金额: $ 5万
• 依托单位: Implant Sciences Corporation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-01-01 至 1993-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9260383&HistoricalAwards=false
• 关键词: Zirconium; Oxide; Surface; Layers; Orthopaedic

The goal of this research project is to fabricate a long lifetime ceramic Zr02 layer with special adhesion on orthopaedic femoral devices, particularly knees. Implantable orthopaedic femoral knee components usually are metallic because of the tensile forces present. Ceramic materials, such as A1203 or Zr02, generally exhibit many desirable properties, including lower ion release,less cut wear, and good biocompatibility. These latter materials, however, are poor in tension. Coatings are undesirable because adhesion cannot be guaranteed. High energy ion implantation is an accepted method that can provide the needed adhesion because the atoms are injected well below the surface, rather than deposited onto it. A technique for growing a thick surface layer of Zr02 on orthopaedic devices using ion implantation will be developed. The layer will interface the substrate through a blended transition region that spans a zone up to 0.1 micrometers in thickness. Zr02 layers up to 3 micrometers thick are possible. This technique should provide a long lifetime articulating surface to allow the implants to have the desirable bulk properties of titanium with a ceramic articulating surface.

该研究项目的目标是制造一种长寿命的陶瓷 Zr02 层，对骨科股骨装置（尤其是膝盖）具有特殊的粘合力。 由于存在拉力，可植入矫形股骨膝关节组件通常是金属的。 陶瓷材料，例如Al2O3或ZrO2，通常表现出许多理想的特性，包括较低的离子释放、较少的切割磨损和良好的生物相容性。 然而，后面这些材料的张力较差。 涂层是不可取的，因为不能保证附着力。 高能离子注入是一种公认​​的方法，可以提供所需的粘附力，因为原子被注入到表面下方，而不是沉积在表面上。 将开发一种利用离子注入在整形外科器械上生长厚的ZrO 2 表面层的技术。 该层将通过混合过渡区域与基底连接，该区域跨越厚度达 0.1 微米的区域。 ZrO 2 层的厚度可以达到3微米。 该技术应提供长寿命的关节表面，以使植入物具有钛和陶瓷关节表面所需的整体特性。