PLASTIC STENT

PROBLEM TO BE SOLVED: To provide a plastic stent capable of easily performing an operation by accurate operation position control and easy unscrewing by performing the operation after screwing a stent with an operation apparatus, preventing a passage in the body from being clogged by infected internal secretion so that the internal secretion smoothly flows.SOLUTION: The plastic stent includes a flow hole provided through along the entire length of a body, and is used together with a stent operation apparatus like a catheter. The operation apparatus includes an externally threaded end for which an externally threaded part is formed on the end outer circumferential surface of a stent push rod. The stent has an internally threaded part formed on the inner peripheral surface of the flow hole of the body so as to be coupled to the externally threaded end formed on the end outer circumferential surface of the stent push rod of the operation apparatus. The externally threaded end of the stent push rod is coupled to the internally threaded part of the flow hole of the stent body and is inserted into a blood vessel or an organ inside the body, and the operation is performed by the system of performing unscrewing after selecting an accurate position.