发明授权
- 专利标题: Stent having spiral channel for drug delivery
- 专利标题(中): 支架具有用于药物递送的螺旋通道
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申请号: US11941591申请日: 2007-11-16
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公开(公告)号: US08016880B2公开(公告)日: 2011-09-13
- 发明人: Brian Cook , Mark Dolan
- 申请人: Brian Cook , Mark Dolan
- 申请人地址: US CA Santa Rosa
- 专利权人: Medtronic Vascular, Inc.
- 当前专利权人: Medtronic Vascular, Inc.
- 当前专利权人地址: US CA Santa Rosa
- 主分类号: A61F2/06
- IPC分类号: A61F2/06
摘要:
A drug delivery stent is formed by a metallic or polymeric tubular strut which is shaped into a generally cylindrical configuration, the tubular strut having a central lumen for containing a therapeutic substance or drug therein. The tubular strut has a continuous channel extending from the inside surface of the strut to the outside surface of the strut positioned spirally about or in a corkscrew fashion around a circumference of the tubular strut for delivering the therapeutic substance or drug to a stenotic lesion. The spiral or corkscrew channel width may be varied along the length of the strut to control elution rate and/or flexibility of the stent. The pitch of the spiral or corkscrew channel may also be varied along the length of the strut to control flexibility of the stent. The stent may be carried on a balloon of a balloon catheter to a site of a stenotic lesion where the stent is implanted.
公开/授权文献
- US20090132031A1 Stent Having Spiral Channel for Drug Delivery 公开/授权日:2009-05-21