A method for visualizing the interior of a bodily passageway, comprising providing a visualization system comprising an endoscope comprising a rotatable drive collar configured for rotation relative to the endoscope; a disposable drive tube comprising an elongated tube having a deformable helical thread disposed on an exterior surface of the elongated tube, the elongated tube being configured for coaxial disposition about the endoscope; and a mount for releasably securing the drive tube to the drive collar; mounting the drive tube coaxially about the endoscope so that the drive tube is secured to the drive collar of the endoscope; inserting the visualization system into the passageway, with the helical thread being in a reduced profile configuration; transforming the helical thread into an expanded profile configuration; rotating the drive tube so as to bring together a site which is to be visualized and the visualization apparatus; and visualizing the passageway.