Patent ID: 7550002

Claim:
A stent delivery device comprising: a stent configured to be placed in a body cavity and including a lumen and an engagement receiving portion; a pusher tube configured to be located at a proximal side of the stent; an elongated guide catheter configured to be inserted through the stent and the pusher tube such that the guide catheter is movable in an axial direction of the guide catheter with respect to the stent and the pusher tube, the guide catheter including a distal end at least in which a guide wire is configured to be arranged, and wherein the stent and the pusher tube are movable distally together through a distal movement of the pusher tube with respect to the guide catheter; a linear member including a proximal end portion configured to be located at the proximal side of the stent and a distal end portion configured to be located within the lumen; and an engagement member provided at a distal end of the linear member, configured to be engaged with the engagement receiving portion through inserting the guide catheter into the lumen so as to push the engagement member toward the engagement receiving portion by a faced portion of the guide catheter, facing the engagement receiving portion, and holding the engagement member between the faced portion and the engagement receiving portion, and is switchable through an axial movement of the guide catheter with respect to the stent from a first state where the engagement member is engaged with the engagement receiving portion such that the stent and the pusher tube are movable proximally together through a proximal movement of the linear member with respect to the guide catheter to a second state where the engagement member is disengaged from the engagement receiving portion such that the stent and the pusher tube are separatable in the axial direction with respect to each other.