Used for uncomplicated, atraumatic endotracheal tube or double-lumen endobronchial tube exchange. Distal 7 cm of catheter is flexible. Extra-firm catheter facilitates exchange of double-lumen tubes. Removable Rapi-Fit Adapter permits use of ventilatory device if necessary during exchange procedure. Through-lumen design of catheter with distal sideports ensures adequate air flow. Blunt, soft, flexible tip of catheter is atraumatic to internal structures. Centimeter marks facilitate accurate placement with shortened endotracheal tubes.