Tracheal assembly devices include: (a) a mouthpiece sized and configured to allow an endotracheal tube to extend outwardly therefrom; and (b) a cutting blade in communication with an outwardly facing portion of the mouthpiece. The mouthpiece can include at least one outwardly projecting substantially rigid short tube defining an open channel. The short tube can be configured to allow the endotracheal tube to slidably move therethrough. The cutting blade may be held in a handle releasably attached to the short tube.