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公开(公告)号：US20100185270A1
公开(公告)日：2010-07-22
申请号：US12649044
申请日：2009-12-29
CPC分类号： A61L2/20 , A61F2/958 , A61L2/08 , A61L2/087 , A61L2/206 , A61L2/208 , A61L2202/10 , A61L2202/24 , A61M25/0097 , A61M25/10 , A61M2025/0019
摘要： Sterilization methods for implantable prostheses are described where a polymeric stent may be sterilized, e.g., via ETO sterilization, at a temperature below a glass transition temperature of the stent. A separate delivery catheter may be sterilized separately and the stent and delivery catheter may then be combined in an aseptic or semi-aseptic environment and sterilized as an assembled system such that the requirements for sterilizing the system are relatively lower. Additionally and/or alternatively, valve and filter assemblies may be used with an optional mandrel assembly for maintaining sterility of the internal components of a catheter system.
摘要翻译： 描述了可植入假体的灭菌方法，其中可以在低于支架的玻璃化转变温度的温度下，例如经由ETO灭菌将聚合物支架灭菌。 单独的输送导管可以单独灭菌，然后将支架和输送导管组合在无菌或半无菌环境中并作为组装系统消毒，使得对系统消毒的要求相对较低。 另外和/或替代地，阀和过滤器组件可以与可选的心轴组件一起使用，以保持导管系统的内部组件的无菌性。
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公开(公告)号：US20100004734A1
公开(公告)日：2010-01-07
申请号：US12488453
申请日：2009-06-19
申请人： Kamal RAMZIPOOR , Alfred N. K. CHIA , Liwei WANG , Chang Yeul Lee
发明人： Kamal RAMZIPOOR , Alfred N. K. CHIA , Liwei WANG , Chang Yeul Lee
CPC分类号： B05D1/18 , A61F2/91 , A61F2/915 , A61F2002/91533 , A61F2002/91558 , A61F2210/0076
摘要： Tubular casting processes, such as dip-coating, may be used to form substrates from polymeric solutions which may be used to fabricate implantable devices such as stents. The polymeric substrates may have multiple layers which retain the inherent properties of their starting materials and which are sufficiently ductile to prevent brittle fracture. Parameters such as the number of times the mandrel is immersed, the duration of time of each immersion within the solution, as well as the delay time between each immersion or the drying or curing time between dips and withdrawal rates of the mandrel from the solution may each be controlled to result in the desired mechanical characteristics. Additional post-processing may also be utilized to further increase strength of the substrate or to alter its shape.
摘要翻译： 可以使用诸如浸涂的管状浇铸工艺从聚合物溶液形成基底，其可用于制造可植入装置，例如支架。 聚合物基材可以具有多个层，其保持其起始材料的固有性质，并且其具有足够的延展性以防止脆性断裂。 浸入芯棒的次数，溶液中每次浸渍的持续时间以及每次浸渍之间的延迟时间，浸渍之间的干燥或固化时间以及心轴从溶液中提取速率之类的参数可以 每个都被控制以产生期望的机械特性。 还可以使用额外的后处理来进一步增加基底的强度或改变其形状。
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