Also called a Stylet or Obturator. Inserted to seal the top of the Guide Cannula and prevent tissue entry after removal of the Internal Cannula. The Dummy Cannula has a stainless-steel wire which is inserted into the Guide Cannula tube; its rounded plastic cap screws onto the Guide Cannula threaded post. The wire is supplied long to be cut to desired length. The 2 mm pedestal Guide Cannula is too short to use a Dummy Cannula with it. Use a C315IDC instead.