CVD ZIRCONIA COATING ON CO-CR ORTHOPEDIC IMPLANTS

骨科关节植入物的长期性能目前受到以下因素的限制： 穿. 表面涂层已被证明是有效的，在减少这一点， 磨损，但每种金属合金系统需要不同的处理。 Spire的离子注入工艺有效地降低了 钛磨损和UHMWPE磨损超过24%的骨科植入物 市场 该提案旨在继续Spire在这方面的领导地位， 通过结合金属的有益特性， 陶瓷的所需磨损性能。 硬化陶瓷涂层将 减少磨损，并将产生直接的商业影响， 对于必须使用这些器械的年轻患者， 延长期限。 氧化锆是一种生物相容的硬质陶瓷，具有良好的耐磨性和润滑性。 它可以通过化学气相均匀地涂在复杂的表面上 在低温下沉积（CVD）。 Spire建议对此进行测试 钴铬试样上的涂层，用于减少UHMWPE匹配的磨损 片. 涂层均匀性、附着力和其他相关物理性能 属性将被确定。 第一阶段的成功将导致对以下方面的测试： II期的实际髋关节部件。

Long-term performance of orthopaedic joint implants is now limited by wear. Surface coatings have been shown to be effective in reducing this wear, but each metal alloy system requires a different treatment. Spire's ion implantation process has been used effectively to reduce titanium wear and UHMWPE wear on over 24% of the orthopaedic implant market. This proposal strives to continue Spire's leadership in this field by combining the beneficial properties of the metal with the desired wear properties of a ceramic. Hardened ceramic coatings will reduce wear and will have immediate commercial impact with significant benefits to younger patients who would have to use these devices for extended periods. Zirconia is a biocompatible, hard ceramic with good wear and lubricity. It can be uniformly applied on intricate surfaces by chemical vapor deposition (CVD) at low temperatures. Spire proposes to test this coating on cobalt-chromium coupons for wear reduction with UHMWPE mating pieces. Coating uniformity, adhesion, and other relevant physical properties will be determined. Success in Phase I will lead to tests on actual hip components in Phase II.