Guide Wire

A guide wire comprising:

• an elongated member comprised of a main body portion and a distal portion positioned on a distal side of the main body portion;
• the main body portion possessing an axis;
• the elongated member comprising a first curve portion curving in a direction of curvature, a second curve portion and a third curve portion;
• the second curve portion being positioned on the distal side of the first curve portion;
• the second curve portion curving in a direction of curvature that is opposite the direction of curvature of the first curve portion;
• the third curve portion being positioned on the distal side of the second curve portion;
• the third curve portion curving in a direction opposite the direction of curvature of the second curve portion;
• a line contacting both the first curve portion and the third curve portion forms an obtuse angle with respect to the axis of the main body portion.

A guide wire comprising:

• an elongated member comprised of a main body portion and a distal portion positioned on a distal side of the main body portion;
• a first curve portion provided at the distal portion of the elongated member, the first curve portion curving in a direction of curvature;
• a second curve portion positioned distally of the first curve portion and curving in a direction of curvature that is opposite the direction of curvature of the first curve portion;
• a third curve portion positioned distally of the second curve portion and curved in a direction opposite the direction of curvature of the second curve portion;
• and
• the first curve portion possessing a higher flexibility than the main body portion, and the second curve portion possessing a higher flexibility than the first curve portion.