A nasogastric tube comprising a porous medium for treatment of a treatment area of an internal surface of a body lumen of a patient to be treated; a suction lumen coupled to the porous medium for providing suction to the porous medium; and a radial deployment system operable to deploy the porous medium between: (i) an insertion state for insertion of the porous medium into the patient, and (ii) a treatment state in which an outer surface of the porous medium is moved towards the treatment area of the patient; wherein a window is defined in a body carried by the nasogastric tube; and wherein a portion of the radial deployment system and/or a portion of the porous medium is arranged to move radially outwards through the window to deploy the porous medium from the insertion state to the treatment state.

The present invention provides devices and methods for safe, easy and cost effective means of placing and verifying proper placement of nasogastric and nasoenteric feeding tubes. Specifically, an integrated feeding device including a tube operable to deliver a nutritional and/or medicinal substance to the gastrointestinal tract, an optical system including a light source, flexible optical fibers or a camera, and a lens, and a steering system is disclosed. The components of the system, namely the optical system and the steering system, may be integrated into the tube.