公开(公告)号：US4813934A

公开(公告)日：1989-03-21

申请号：US83624

申请日：1987-08-07

申请人： Erick T. Engelson ,  John R. Daniels

发明人： Erick T. Engelson ,  John R. Daniels

IPC分类号： A61M25/00 ,  A61M25/01 ,  A61M29/00

CPC分类号： A61M25/0075 ,  A61M25/0125

摘要： A catheter device for accessing an internal body site along a small-diameter vessel path containing branch points in which the path may follow either the larger of smaller-diameter branch vessels. The device includes a catheter having a distal-end inflatable ballon and a distal-end aperture. A guide wire in the device is designed to block the aperture at one or more axial wire positions, allowing the balloon to be inflated by fluid infusion into the catheter. In a catheter placement operation, the catheter is advanced along the vessel path toward the selected target site. When the leading end of the catheter encounters a branch point at which the path follows the larger-diameter vessel, the guide wire is moved to a position which blocks the catheter aperture, and fluid is infused into the catheter to inflate the balloon. The catheter is then carried by hydrodynamic flow into the larger-diameter vessel. When the catheter end encounters a branch point at which the path follows the smaller diameter of the two branch vessels, the catheter is deflated and the guide wire manipulated to orient the wire for movement into the smaller vessel.

摘要翻译： 一种用于沿着包含分支点的小直径血管路径进入内部身体部位的导管装置，其中所述路径可以跟随较大直径的分支血管。 该装置包括具有远端充气气囊和远端孔的导管。 设备中的引导线被设计成在一个或多个轴向线位置处阻挡孔，允许气囊通过流体输注到导管中而膨胀。 在导管放置操作中，导管沿着血管路径前进到所选择的目标部位。 当导管的前端遇到路径跟随较大直径血管的分支点时，导线移动到阻挡导管孔的位置，并且流体注入导管以使气囊膨胀。 然后通过流体动力流将导管携带到较大直径的容器中。 当导管端部遇到分支点时，其中路径遵循两个分支血管的较小直径，导管被放气并且导丝被操纵以使丝线定向以移动到较小的血管中。