| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a system and method for mechanically positioning intravascular implants. <P>SOLUTION: An assembly for deploying an implant into an aneurysm in a vessel, comprises: a tubular member having a longitudinal axis, a wall defining a lumen along the axis, and a distal portion having an inner cross-sectional dimension and a distal end; a coil implant having an enlarged proximal end; and a core wire extending within the lumen and contacting the enlarged end at a point, the core wire comprising a region having a cross-section that is, in a plane transverse to the longitudinal axis and intersecting the point, substantially crescent shaped; wherein a length of a line segment extending from an outer surface of the enlarged end, through the point, and to an outer surface of the core wire is greater than the cross-sectional dimension, such that the enlarged end is blocked from moving within the lumen distally entirely past the distal end when the core wire and enlarged end are positioned radially adjacent each other within the lumen. <P>COPYRIGHT: (C)2013,JPO&INPIT |
