Patent ID: 6139511
Filing Date: 2000-10-31
Classification: A61M

Abstract:
A guidewire comprising:a) an elongate core member which has a proximal section with a substantially constant outer diameter, and a distal section having a distally tapered segment with a distal end and a proximal end marked with a radiopaque marker disposed on the elongate core member;b) a proximal coil which has a proximal end and a distal end, and which is at least partially disposed about the distal section of the elongate core member, which is comprised of a helix of ribbon material having a substantially rectangular cross section, and which has the proximal end secured to the proximal section of the elongate core member; andc) a distal coil which has a proximal end and a distal end, which is at least partially disposed about the distal section of the elongate core member distally of the proximal coil, and which is comprised of a helix of material having a substantially round cross section, and which has its distal end secured to the elongate core member.