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.
