公开(公告)号：US20170281832A1

公开(公告)日：2017-10-05

申请号：US15624235

申请日：2017-06-15

申请人： Kamal RAMZIPOOR ,  Richard J. SAUNDERS

发明人： Kamal RAMZIPOOR ,  Richard J. SAUNDERS

IPC分类号： A61L31/04

CPC分类号： A61L31/148 ,  A61F2/07 ,  A61F2/24 ,  A61F2/82 ,  A61F2/915 ,  A61F2002/30062 ,  A61F2002/30535 ,  A61F2002/828 ,  A61F2002/91558 ,  A61F2210/0004 ,  A61F2210/0019 ,  A61F2240/004 ,  A61L31/04 ,  A61L31/06 ,  A61L31/14 ,  B29C41/003 ,  B29C41/14 ,  B29C49/00 ,  B29K2105/0035 ,  B29K2995/0056 ,  B29L2031/7532 ,  C08L67/04

摘要： A bioabsorbable composite stent structure, comprising bioabsorbable polymeric ring structures which retain a molecular weight and mechanical strength of a starting substrate and one or more interconnecting struts which extend between and couple adjacent ring structures. The ring structures can have a formed first diameter and being radially compressible to a smaller second diameter and re-expandable to the first diameter. The ring structures can comprise a base polymeric layer. The interconnecting struts can be formed from a polymer blend or co-polymer of poly-L-lactide (PLLA) and an elastomeric polymer. The interconnecting struts each can have a width that is less than a circumference of one of the ring structures. The adjacent ring structures can be axially and rotationally movable relative to one another via the interconnecting struts. The interconnecting struts can also be bioabsorbable.

公开(公告)号：US20100042202A1

公开(公告)日：2010-02-18

申请号：US12541095

申请日：2009-08-13

申请人： Kamal RAMZIPOOR ,  Richard J. SAUNDERS

发明人： Kamal RAMZIPOOR ,  Richard J. SAUNDERS

IPC分类号： A61F2/06 ,  B05D3/00 ,  B32B1/08

CPC分类号： A61F2/91 ,  A61F2/07 ,  A61F2002/826 ,  A61F2002/828 ,  A61F2210/0004 ,  A61F2210/0076 ,  Y10T428/139

摘要： Composite stent structures having multi-axial flexibility are described where the composite stent may have one or more layers of bioabsorbable polymers fabricated with the desired characteristics for implantation within a vessel. A number of individual ring structures separated from one another may be encased between a base polymeric layer and an overlaid polymeric layer such that the rings are coupled to one another via elastomeric segments which enable the composite stent to flex axially and rotationally along with the vessel. Each layer may have a characteristic that individually provides a certain aspect of mechanical behavior to the composite stent such that the aggregate layers form a composite polymeric stent structure capable of withstanding complex, multi-axial loading conditions imparted by an anatomical environment such as the SFA.

摘要翻译： 描述了具有多轴向柔性的复合支架结构，其中复合支架可以具有制造具有用于在血管内植入的期望特性的一层或多层生物可吸收聚合物。 彼此分离的多个单独的环结构可以被封装在基础聚合物层和覆盖的聚合物层之间，使得环通过弹性片段彼此耦合，这使得复合支架能够与容器一起轴向和旋转地弯曲。 每个层可以具有单独地向复合支架提供机械行为的某一方面的特征，使得聚集体层形成能够承受诸如SFA之类的解剖学环境赋予的复杂的多轴向负载条件的复合聚合物支架结构。