HI-TORQUE Extendible Guide Wires: some HI-TORQUE Guide Wires have a modified proximal end that permits the attachment of the DOC® Guide Wire Extension. Refer to the product label for Guide Wire Extension system compatibility. Joining the guide wire extension to the guide wire facilitates the exchange of one interventional device for another, while maintaining guide wire position in the anatomy. After the interventional device exchange has been completed, the extension can be detached and the guide wire can be used in its original capacity. 


  • 1Carefully insert the guide wire through the guide wire lumen hub of the interventional device.
     2. Advance the guide wire until the tip of the guide wire is just proximal to the tip of the interventional device.
    3. If using a guiding catheter, engage the guiding catheter and insert the interventional device / guide wire assembly through the hemostatic valve. Advance the system through the guiding catheter until it is just proximal to the tip of the guiding catheter.
    4. Tighten the hemostatic valve to create a seal around the interventional device. Ensure intentional guide wire movement is still permitted.
    5. Attach the torque device to the guide wire, if desired.
    6. Under fluoroscopy, advance the guide wire out of the interventional device while securing the interventional device in place. Use the torque device to steer the guide wire across the lesion.
    7. Secure the guide wire in place while tracking the interventional device over it and into the lesion