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1. 发明申请

WO1993022986A1 ESOPHAGEAL STENT AND DELIVERY TOOL 审中-公开
标题翻译：食管和交付工具
公开(公告)号：WO1993022986A1
公开(公告)日：1993-11-25
申请号：PCT/US1993001966
申请日：1993-03-10
申请人： SCHNEIDER (USA) INC.
发明人： SCHNEIDER (USA) INC. , JOHNSON, Liann, M. , THOMPSON, Richard, J. , SCHOLL, John, A.
IPC分类号： A61F02/06
CPC分类号： A61F2/90 , A61F2/0077 , A61F2/07 , A61F2/852 , A61F2/95 , A61F2/966 , A61F2002/072 , A61F2002/821 , A61F2002/9517 , A61F2002/9534 , A61F2002/9665 , A61F2210/0076 , A61F2220/0033 , A61F2220/005 , A61F2230/0054 , A61F2230/0078 , A61F2250/0063 , A61F2250/0097 , A61M2025/0008
摘要： A radially self-expanding stent (90) particularly suited for treating esophageal strictures, includes a medial region (92) and proximal and distal cuffs (94, 96) having diameters greater than the medial region (92) diameter when the stent (90) is in the relaxed state. A silicone coating circumscribes the medial region (92), but the cuffs (94, 96) are not coated and retain their open weave construction. As a result, the cuffs (94, 96) remain particularly well suited to immediately contact esophageal wall tissue and resist stent migration, while the silicone coated medial region (92) provides a barrier to tumor ingrowth, and has an enhanced radial restoring force to maintain an open passageway in the esophagus. A deployment device (16) for the stent (90) includes an interior catheter (26) surrounded by the stent (90) and having an esophageal dilation feature (28), along with an exterior catheter (18) that radially compresses the stent (90). A low durometer sleeve (54), fixed to the interior tube (26) and in surface engagement with the compressed stent (90), tends to fix the axial position of the stent (90) relative to the interior catheter (26) whenever the exterior catheter (18) is moved axially relative to the inner catheter (26). Consequently, precision in stent placement and the ability to recapture a partially deployed stent are enhanced.
摘要翻译：特别适用于治疗食管狭窄的径向自扩张支架（90）包括当支架（90）具有直径大于中间区域（92）直径的直径的中间区域（92）和近端和远端袖带（94,96）处于放松状态。硅胶涂层限定了中间区域（92），但是袖口（94,96）没有涂覆并保持其开放的编织结构。结果，袖带（94,96）特别适合于立即接触食管壁组织并抵抗支架移动，而硅氧烷涂覆的内侧区域（92）为肿瘤向内生长提供屏障，并具有增强的径向恢复力在食管中保持开放的通道。用于支架（90）的展开装置（16）包括由支架（90）包围并具有食管扩张特征（28）的内部导管（26），以及径向压缩支架的外部导管（18） 90）。固定到内管（26）并与压缩支架（90）表面接合的低硬度套筒（54）倾向于相对于内导管（26）固定支架（90）的轴向位置，只要外导管（18）相对于内导管（26）轴向移动。因此，增强了支架放置的精度和再次部分展开的支架的能力。

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