Also called a Stylet or Obturator. Installed to seal the top of the Double Guide Cannula and prevent tissue entry after removal of the Double Internal Cannula. The Double Dummy Cannula has two stainless steel wires which are inserted into the Double Guide Cannula tubes. A Dust Cap secures the unit to the Double Guide Cannula. The wires are supplied long to be cut to desired length. The center-to-center distance (C/C Dist.) between tubes is determined by the center-to-center distance of the Double Guide Cannula to be used.