Patent ID: 6636758
Filing Date: 2003-10-21
Classification: A61B,A61M

Abstract:
A wire for radiologically estimating a feature of a structure in a body lumen comprising:a.) a flexible, elongate core wire having a distal end, a proximal end, a core radius, and an outer surface, a core wire length extending between the distal end and the proximal end, and having a region near the distal end in which the core radius varies, b.) a plurality of radio-opaque markers near the distal end and of a size, shape, and placement to allow estimation of a distance near or in the body lumen, and c.) a polymeric covering having a substantially constant radius extending proximally from near the distal end, said polymeric covering being in contact with the outer surface of the core wire for at least a portion of the core wire length that is coextensive with the region near the distal end in which the core radius varies.