A stent system 1 has a stent 2 having a hole and at least an anchor 3 having an arm 33. The stent 2 has a cylindrical shape, in which a sheet is rolled, and a plurality of holes 13 are provided thereon. A grasping portion 33A at the distal end of the arm 33 of the anchor 3 can be inserted into the holes 13. A grasping force X of the grip 3 is greater than a drag R that the holes of the stent 2 yield. The grip 3 deforms the stent 2, easily grasps the stent 2 and a biological tissue, whereby it is possible to fix the stent 2. In accordance with the present invention, it is possible to reliably fix the stent in a hollow organ.
