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Polymeric tracheal stents with a long center lumen and a smaller lumen projecting from the side of the stent at either a 90 degrees or 75 degrees angle (i.e., configured as a T) that are permanently inserted to maintain patency of the tracheal airway. These stents typically consist of a silicone or slapstick tube inserted using a tracheostomy procedure, similar to the tracheostomy technique used to open the airways in emergency. The side lumen extends through the tracheostoma. T-shaped polymeric tracheal stents are used to bypass tracheal stenosis situated between the thoracic inlet and the carina, usually when surgery of the tracheal obstruction is not possible.
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