Patent ID: 8613713

Claim:
A wire guide comprising: a distal tip, a core element having a proximal connector, wherein a distal end of the core element connects to the distal tip, an outer coil disposed coaxially around the core element and having a distal end attached to the distal tip and a proximal end attached to the proximal connector, an inner coil disposed coaxially around the core element between the core element and the outer coil, wherein a distal end of the inner coil attaches to the distal tip, and a shaft element disposed proximally of the inner coil between the core element and the outer coil, wherein a distal end of the shaft element attaches to a proximal end of the inner coil, wherein the shaft element extends through the proximal connector and is movable axially relative to the distal tip whereby an extension of the inner coil is changed.