A luminal coupling tube system for providing access to a lumen of a
subject is disclosed. The system includes an internal magnet assembly, a
snare assembly, an external magnet, a pull wire system and a feeding tube
assembly. The internal magnet assembly includes an internal magnet having
a first coupling surface and a tether for traversing an endoscope
instrument channel. The snare assembly includes a snare, a snare
operating device, and a cable. The external magnet includes a second
coupling surface. The polar orientation of the external magnet is
opposite the polar orientation of the internal magnet such that the first
and second coupling surface are magnetically attracted. The pull wire
system includes a needle, a cannula and a pull wire. The feeding tube
assembly includes a tube, a snare, a connector, and a dome fixed to the
tube. A method of use is disclosed.