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    • 1. 发明申请
    • Intraluminal filter having a cover sleeve
    • 管腔内过滤器具有盖套筒
    • US20070073332A1
    • 2007-03-29
    • US11235968
    • 2005-09-26
    • Sean MillerAlbert Dunfee
    • Sean MillerAlbert Dunfee
    • A61M29/00
    • A61F2/013A61F2002/018A61F2230/0006A61F2230/0067A61F2230/008
    • A temporary filtering device for collecting debris in a body lumen. An embolic filter is utilized that is expandable and collapsible by push-pull action. A filter proximal end is attached to a proximal shaft portion and a filter distal end is attached to a distal shaft portion. The proximal and distal shaft portions are slidably engaged within the filter, such that relative longitudinal movement between the proximal and distal shaft portions either moves the filter ends closer together to expand the filter, or moves the filter ends farther apart to collapse the filter. The filtering device includes a cover sleeve coaxially disposed about the filter that is attached to the distal shaft portion for aiding in the collapse of the filter. The cover sleeve may be attached to the distal shaft portion by one or more connecting rods, and is sized to slide over the filter and at least partially cover the filter openings, when the filter is being collapsed and when the filter is in its collapsed configuration. The temporary filtering device may be utilized without a distal shaft portion, wherein the filter distal end and connecting rods are attached or slidable relative to a core wire and relative movement between the core wire and proximal shaft reconfigures the filter between the expanded and collapsed configurations.
    • 一种临时过滤装置,用于收集体腔中的碎屑。 采用通过推拉动作可膨胀和收缩的栓塞式过滤器。 过滤器近端附接到近端轴部分,并且过滤器远端附接到远侧轴部分。 近端和远端轴部分可滑动地接合在过滤器内,使得近端和远端轴部分之间的相对纵向运动可以使过滤器端部更靠近在一起以使过滤器膨胀,或者使过滤器端部更远地移动以使过滤器塌缩。 过滤装置包括同轴地设置在过滤器周围的盖套,该套套附接到远端轴部分以帮助过滤器的塌陷。 盖套可以通过一个或多个连杆附接到远侧轴部分,并且其尺寸设计成在过滤器被折叠时以及当过滤器处于其收缩构型时在过滤器上滑动并且至少部分地覆盖过滤器开口 。 可以使用临时过滤装置而没有远侧轴部分,其中过滤器远端和连接杆相对于芯线连接或滑动,并且芯线和近端轴之间的相对运动在扩张和收缩构型之间重新配置过滤器。