#$%^&*AU2019264655A120191205.pdf#####ABSTRACT A method of using a medical apparatus includes attaching a substantially cylindrical sleeve in the medical apparatus to a respiratory tube insertion tool, the sleeve with a distal end affixed to an outward-facing illumination device and a corresponding forward-facing imaging device, the sleeve including an open proximal end connecting a tubular cavity to an outer space, the open proximal end to slidingly receive therethrough a distal end of the insertion tool, and including an inner surface around the tubular cavity configured to wholly slide over and removably affix itself to the distal portion of the insertion tool. The method additionally includes inserting the insertion tool with the attached sleeve into an airway of a human subject, transmitting images of the airway acquired by the imaging device to a remote device for displaying, displaying the images of the airway on the remote display device, and positioning the insertion tool with the attached sleeve inside the airway based on the displayed images.