The subject-matter of the invention relates, inter alia, to a medical device comprising: an elongated flexible tube including a distal end and a proximal end, the tube defining a channel extending from the proximal end to an aperture at the distal end and a light source provided along an outside surface of the flexible tube at a distal end of the flexible tube, the light source configured to emit light laterally and distally of the distal end of the flexible tube.
