Patent ID: 7648525

Claim:
A stent delivery system comprising: a first cylindrical member configured to be inserted into a forceps channel of an endoscope, the first cylindrical member including a through hole having a central axis; a second cylindrical member inserted into the through hole of the first cylindrical member and capable of advancing/retreating with respect to the first cylindrical member, the second cylindrical member including a holding mechanism for holding a relative position of the second cylindrical member with respect to the forceps channel of the endoscope; and a stent which is attached between the first and second cylindrical members in a state where a diameter of the stent is reduced by the first cylindrical member and which expands when the first cylindrical member is removed; wherein the holding mechanism includes a holder configured to be attached to and disposed on the endoscope and a fixing tool which connects the holder to the second cylindrical member in a detachably fixed state; and the fixing tool includes: an arm which grasps the holder; and an arm which grasps the second cylindrical member.