Smiths Medical Bivona� Tts Cuffed Silicone Tracheostomy Tubes Each 670185 by Smiths Medical ASD GROUP: Surgery/Minor Procedure:Tubes/Airways:Tracheostomy Item Description: Trach Tube, Adult, Cuffed, 8.5mm ID x 11.8mm OD x 88mm Length Packaging Desc: Tube Tracheostomy 8.5Mm Tightto Shaft Cuff Country of Origin: Harmonized Tariff Code: Product Description: TTS� (Tight-To-Shaft) tubes have the profile of an uncuffed tube with the insurance of a cuff, if and when needed. Available in both neonatal and pediatric sizes. It is like an uncuffed tube, but it has a cuff. When completely deflated, it collapses tight to the shaft of the tube.