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公开(公告)号：US20140039600A1
公开(公告)日：2014-02-06
申请号：US14030912
申请日：2013-09-18
发明人： Kamal RAMZIPOOR , Alfred N. K. CHIA , Liwei WANG
IPC分类号： A61F2/82
CPC分类号： A61F2/82 , A61F2/07 , A61F2/24 , A61F2002/30062 , A61F2002/30535 , A61F2210/0004 , A61F2210/0019 , A61F2240/004 , A61L31/04 , A61L31/06 , A61L31/14 , A61L31/148 , A61L31/16 , B29C41/003 , B29C41/14 , B29C49/00 , B29K2105/0035 , B29K2995/0056 , B29L2031/7532
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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公开(公告)号：US20170157806A1
公开(公告)日：2017-06-08
申请号：US15439002
申请日：2017-02-22
发明人： Kamal RAMZIPOOR , Alfred N. K. CHIA , Liwei WANG
CPC分类号： A61F2/82 , A61F2/07 , A61F2/24 , A61F2002/30062 , A61F2002/30535 , A61F2210/0004 , A61F2210/0019 , A61F2240/004 , A61L31/04 , A61L31/06 , A61L31/14 , A61L31/148 , A61L31/16 , B29C41/003 , B29C41/14 , B29C49/00 , B29K2105/0035 , B29K2995/0056 , B29L2031/7532
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.
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公开(公告)号：US20140236285A1
公开(公告)日：2014-08-21
申请号：US14259490
申请日：2014-04-23
发明人： Kamal RAMZIPOOR , Alfred N. K. CHIA , Liwei WANG
CPC分类号： A61F2/82 , A61F2/07 , A61F2/24 , A61F2002/30062 , A61F2002/30535 , A61F2210/0004 , A61F2210/0019 , A61F2240/004 , A61L31/04 , A61L31/06 , A61L31/14 , A61L31/148 , A61L31/16 , B29C41/003 , B29C41/14 , B29C49/00 , B29K2105/0035 , B29K2995/0056 , B29L2031/7532
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.
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公开(公告)号：US20140035192A1
公开(公告)日：2014-02-06
申请号：US14030909
申请日：2013-09-18
发明人： Kamal RAMZIPOOR , Alfred N. K. CHIA , Liwei WANG
IPC分类号： A61F2/07
CPC分类号： A61F2/82 , A61F2/07 , A61F2/24 , A61F2002/30062 , A61F2002/30535 , A61F2210/0004 , A61F2210/0019 , A61F2240/004 , A61L31/04 , A61L31/06 , A61L31/14 , A61L31/148 , A61L31/16 , B29C41/003 , B29C41/14 , B29C49/00 , B29K2105/0035 , B29K2995/0056 , B29L2031/7532
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.
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