Patent ID: 6106488
Filing Date: 2000-08-22
Classification: A61M

Abstract:
A guidewire comprising:an elongate core wire having a proximal end and a distal end, the core wire having a proximal region, an intermediate region and a distal region, at least a portion of the intermediate region being disposed between about 7 cm and about 25 cm proximally of the distal end; anda covering member disposed around a substantial portion of the intermediate region of the core wire, wherein the flexural rigidity of the guidewire at the portion of the intermediate region of the guidewire is greater than at the distal region and less than at the proximal region, and the guidewire has at least two sections of differing flexural rigidity at the portion of the intermediate region of the core wire, the more proximal of the two sections of flexural rigidity having a flexural rigidity of about 1.5 to about 4 times more than the more distal of the two intermediate sections.