Patent ID: 8034094

Claim:
A stent delivery system comprising: a tubular stent which is retainable in a body cavity of a living body; a guide catheter which is insertable in the tubular stent and which is insertable in the body cavity of the living body together with the tubular stent; a pusher tube, having a distal end edge face which contacts a proximal end edge face of the stent so that the proximal end edge face of the stent faces the distal end edge face of the pusher tube, the pusher tube pushes and moves the stent distally; a filament which connects the stent with the pusher tube by a proximal end of the filament being engaged with the pusher tube and by a distal end of the filament stretching toward the stent so as to penetrate a peripheral wall of the stent; an engaging member which is engaged with the distal end of the filament penetrating the peripheral wall of the stent, and which keeps the connection between the stent and the pusher tube by the filament; and a pulling member which pulls a distal end of the filament into a distal end of the pusher tube when the engagement between the engaging member and the filament is released and the connection between the stent and the pusher tube is released, wherein the engaging member and the pulling member comprise a single member, a distal end of the common member is a bent wire-like member forming a bent, overlapped portion, and the common member comprises a freely extendable and retractable stilet which is passed through a hollow portion of the pusher tube, a distal end of the bent overlapped portion of the stilet is inserted into a loop formed at the distal end of the filament so that the filament is wrapped around an outer circumference of the distal end of the bent overlapped portion, and a part of the filament is sandwiched in the bent overlapped portion of the stilet at the position of a more proximal side than the distal end of the bent overlapped portion around which a filament is wrapped.