Biliary stent unit

A biliary stent unit comprising:

• a stent that has a cylindrical body having several spaces formed by twisting or crossing wires, which are made of a superelastic shape memory alloy, in a hollow cylindrical net shape, and having several bending portions formed around an edge of both ends thereof, that includes a pulling cord, which is tied to the space of the several bending portions at a first end of the cylindrical body, has two parts having different lengths and protruding from the first end of the cylindrical body, has a knot formed by tying the two parts having different lengths, and of which the longer part protrudes outside a human body, and that is applied to a diseased part generated due to stricture or occlusion in the biliary tract of the human body;
• a pulling rod that has a hook for fixing and releasing the pulling thread protruding outside the human body;
• a soft tube in which the pulling thread, which is fixed to the hook pulled out of the human body when the pulling rod is pulled, is inserted, that is guided close to the stent in the human body by the pulling thread, and that has a male thread portion at a portion exposed outside the human body;
• a cap that has a female thread portion, which is fastened to the male thread portion, on an inner surface thereof, that has a through-hole on an outer surface thereof, through which the pulling thread lengthily pulled out of the human body when the puling rod is pulled and then fixed to the hook, passes, and that presses and fixes the pulling thread, which passes through the through-hole when the female thread portion and the male thread portion are fastened and is then wound on an outer surface of the applied flexible tube, on the skin of the human body;
• and
• a fixing member that covers and fixes the cap, which fixes the pulling thread on the skin of the human body, on the skin of the human body.