Patent ID: 8622932

Claim:
A guidewire comprising: a core shaft; an inner coil that is formed by winding at least one strand, and surrounds a distal side portion of the core shaft; an outer coil that is formed by winding at least one strand, and surrounds the inner coil and the distal side portion of the core shaft; a tip joint that joins a distal end of the outer coil and a distal end of the inner coil to a distal end of the core shaft so as to form a gap between the core shaft and the inner coil and a gap between the inner coil and the outer coil; an outer proximal end joint that joins a proximal end of the outer coil to the core shaft; an inner proximal end joint that joins a proximal end of the inner coil to the core shaft so as to form a gap between the inner coil and the outer coil on a distal side of the outer proximal end joint; and a coil joint that is located between the tip joint and the inner proximal end joint, and joins only the outer coil and the inner coil to each other so as to form a gap between the inner coil and the core shaft.