Abstract: A non-slip, bronchial tube is provided for insertion into the trachea for chest surgery purposes. Insertion is accomplished through a conventional endotracheal tube by means of a built-in, spring loaded stylet. An endobronchial tube is attached to the end of the bronchial tube and is configured as a Y-guide having expandable left and right arms which are glued or welded to join a central portion. The spring loaded stylet is mounted within the central portion. A spring loading at the end of the bronchial tube is secured within a sheath mounted along the distal end of one arm, typically along the left arm, and this spring loading is secured within an inflatable cuff. When the bronchial tube is inserted through the endotracheal tube by means of the stylet, the Y-guide which is attached to the bronchial tube will also move forward causing the arms of the Y-guide to press lightly against the carina of the trachea-bronchial tree and separate into the left and right bronchia.