A tube for delivering fluid to a remote location not normally in view or not practicably able to be viewed by an operator placing such tubes. The tube comprising a lumen connecting a fluid input aperture, disposed at a proximal end of the tube, and a fluid output aperture, to deliver fluid therebetween. The tube further comprises positioning means having an optical waveguide and sensor means. The optical waveguide extends from the proximal end of the tube to the sensor means. The optical waveguide guides an input optical signal to the sensor means. Positioning of the sensor means in a desired location within a system varies the properties of the input optical signal to provide a predetermined output optical signal, which is guided to the proximal end of the tube to indicate to a user, placement of the predetermined portion of the tube at the desired position within the system.
