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公开(公告)号:US5958440A
公开(公告)日:1999-09-28
申请号:US154694
申请日:1993-11-18
申请人: Robert Edward Burrell , Larry Roy Morris , Prasad Shrikrishna Apte , Sudhindra Bharat Sant , Kashmir Singh Gill
发明人: Robert Edward Burrell , Larry Roy Morris , Prasad Shrikrishna Apte , Sudhindra Bharat Sant , Kashmir Singh Gill
IPC分类号: A61L31/00 , A01N59/16 , A61L17/14 , A61L27/30 , A61L27/54 , A61L29/10 , A61L29/16 , A61L31/02 , A61L31/16 , B22F1/02 , B22F9/04 , C04B37/00 , C22C5/06 , C22C45/00 , C23C14/00 , C23C14/02 , C23C14/06 , C23C14/08 , C23C14/14 , C23C14/16 , C23C14/20 , C23C14/22 , C23C14/35 , C23C14/58 , A01N25/12
CPC分类号: A01N59/16 , A61L17/145 , A61L27/306 , A61L27/54 , A61L29/106 , A61L29/16 , A61L31/16 , C23C14/0036 , C23C14/025 , C23C14/06 , C23C14/0688 , C23C14/086 , C23C14/14 , C23C14/16 , C23C14/205 , C23C14/225 , C23C14/35 , C23C14/588 , A61B2018/00119 , A61L2300/102 , A61L2300/104 , A61L2300/404 , A61L2300/602 , A61L2300/606 , A61L2300/63 , H01H2300/014 , Y10S977/899 , Y10S977/915
摘要: Anti-microbial coatings and method of forming same on medical devices are provided. The coatings are preferably formed by depositing an anti-microbial, biocompatible metal by vapour deposition techniques to produce atomic disorder in the coating such that a sustained release of metal ions sufficient to produce an anti-microbial effect is achieved. Preferred deposition conditions to achieve atomic disorder include a lower than normal substrate temperature, and one or more of a higher than normal working gas pressure and a lower than normal angle of incidence of coating flux. Anti-microbial powders formed by vapour deposition or altered by mechanical working to produce atomic disorder are also provided. Novel anti-microbial silver materials are defined, characterized by having a positive rest potential, a T.sub.rec /T.sub.m less than 0.33, and a grain size less than 200 nm. Anti-microbial fine grain or nanocrystalline materials are provided, together with methods of preparation, wherein the anti-microbial metal if deposited in a matrix with atoms or molecules of a different material such as other biocompatible metals (ex. Ta), trapped or absorbed oxygen, or compounds of anti-microbial metals or biocompatible metals (ex. Ag0 or TaO).
摘要翻译: 提供了抗微生物涂层及其在医疗装置上的形成方法。 优选通过气相沉积技术沉积抗微生物相容性金属来形成涂层,以在涂层中产生原子紊乱,从而实现足以产生抗微生物作用的金属离子的持续释放。 实现原子紊乱的优选沉积条件包括低于正常的衬底温度,以及高于正常工作气体压力和低于正常入射角的涂层焊剂的一种或多种。 还提供了通过气相沉积或通过机械加工改变以产生原子紊乱形成的抗微生物粉末。 定义了新的抗微生物银材料,其特征在于具有阳性静电位,Trec / Tm小于0.33,粒度小于200nm。 提供抗微生物细晶粒或纳米晶体材料以及制备方法,其中如果将抗微生物金属沉积在具有不同材料的原子或分子的基质中,例如其它生物相容性金属(例如Ta),被捕获或吸收 氧气或抗微生物金属或生物相容性金属化合物(例如AgO或TaO)。
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公开(公告)号:US5808282A
公开(公告)日:1998-09-15
申请号:US848018
申请日:1997-04-28
IPC分类号: C04B35/117 , C04B35/581 , C04B35/584 , C04B35/64 , H05B6/80
CPC分类号: C04B35/584 , C04B35/117 , C04B35/581 , C04B35/64
摘要: A microwave susceptor bed useful for sintering ceramics, ceramic composites and metal powders is disclosed. The susceptor bed contains granules of a major amount of a microwave susceptor material, and a minor amount of a refractory parting agent, either dispersed in the susceptor material, or as a coating on the susceptor material. Alumina is the preferred susceptor material. Carbon is the most preferred parting agent. A sintering process using the bed and novel silicon nitride products produced thereby are described.
摘要翻译: 公开了一种用于烧结陶瓷,陶瓷复合材料和金属粉末的微波感受器床。 感受器床包含主要量的微波感受器材料的颗粒和分散在基座材料中的少量耐火分离剂,或作为感受体材料上的涂层。 氧化铝是优选的感受材料。 碳是最优选的脱模剂。 描述了由此产生的床和新型氮化硅产品的烧结过程。
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