公开(公告)号：US20020156397A1

公开(公告)日：2002-10-24

申请号：US09881290

申请日：2001-06-12

Applicant: Advanced Cardiovascular Systems, Inc.

Inventor： Wayne E. Cornish ,  John Schreiner ,  James Jacobs ,  Marc M. Jalisi ,  Mark Richardson

IPC: A61B005/00

CPC classification number: A61B5/6851 ,  A61M25/09 ,  A61M2025/09083 ,  A61M2025/09175

Abstract: The invention is directed to a guidewire having a distal section with multiple distally tapered core segments with at least two contiguous distally tapering core segments in which the most distal tapered core segment preferably has a greater degree of taper than the proximally contiguous tapered core segment. The invention is also directed to an elongated intracorporeal device, preferably a guidewire or section thereof, that has a core member or the like with a plurality of contiguous tapered segments having taper angles that are configured to produce a linear change in stiffness over a longitudinal section of the device. The device may also have a core section with a continuously changing taper angle to produce a curvilinear profile that preferably is configured to produce a linear change in stiffness of the core over a longitudinal section of the device.