[Problem] To provide a tube
stent delivery system which has a simple structure and whereby a tube
stent is easily released. [Solution] A tube
stent 10 has a ring-shaped first tube wall part 11, a hollow
first insertion part 12 surrounded by the first tube wall part, and a first fitting part 40 for fitting with an outer
catheter 20, the first fitting part being provided with a first fitting piece 42, a first fitting hole 43, and a first body 41. The outer
catheter has a ring-shaped second tube wall part 21, a hollow second
insertion part 22 surrounded by the second tube wall part, and a secondfitting part 50 for fitting with the tube stent, the second fitting part being provided with a second fitting piece 52, a second fitting hole 53, and a second body 51. The first fitting piece is inserted in the second fitting hole, and the second fitting piece is inserted in the first fitting hole, whereby the first fitting piece and the second fitting piece are fitted together, and the fitting ismaintained by
insertion of an inner
catheter in the
first insertion part of the tube stent and the second
insertion part of the outer catheter.