Multi-feature steerable guidewire for vascular systems

A steerable guidewire having a distal end and a proximal end comprising in combination:

• a A first helically wound radiopaque spring having a distal end and a proximal end and an inside diameter and an outside diameter, said first spring constituting said distal end of said guidewire, said first spring shaped to a preformed curve;
• b A second helically wound spring having a distal end and a proximal end disposed proximally of said first spring, said first and second springs joined at said proximal end of said first spring and said distal end of said second spring;
• c A tube having a distal end and a proximal end and an inside diameter and an outside diameter, said tube disposed proximally of said second spring and joined to said second spring at said distal end of said tube and said proximal end of said second spring forming a juncture;
• and
• d A core wire of a diameter substantially equal to said inside diameter of said first spring at a distal portion of said core wire and attached to said distal end of said first spring at said distal portion of the core wire, said core wire moveable within said second spring and said tube wherein said first spring is straightened upon moving said core wire proximally and curved by moving said core wire distally.