Patent ID: 8366760
Filing Date: 2013-02-05
Classification: A61F

Abstract:
1. A stent delivery system comprising: a distal-side tube possessing a guide wire lumen through which a guide wire is adapted to extend; a proximal-side tube having an interior; a fixing tube fixed to a proximal portion of the distal-side tube and a distal portion of the proximal-side tube, the fixing tube possessing an opening communicating with the guide wire lumen; a stent accommodation tubular member enclosing a distal side of the distal-side tube and slidable toward a proximal end of the distal-side tube, the stent accommodation tubular member possessing a proximal end; a cylindrically-shaped stent accommodated inside the stent accommodation tubular member in a compressed condition and being expandable outwardly when the stent is discharged from the stent accommodation tubular member so the stent returns to a configuration exhibited by the stent before being accommodated in the stent accommodation tubular member in the compressed condition; at least one pulling wire possessing one end portion fixed relative to the stent accommodation tubular member so that movement of the one end portion of the wire toward a proximal side of the stent accommodation tubular member causes movement of the stent accommodation tubular member toward the proximal side; the distal-side tube comprising a stent proximal portion-locking portion which contacts a proximal end of the stent accommodated inside the stent accommodation tubular member to prevent the stent from moving toward the proximal side; a slide tube disposed proximally of the proximal end of the stent accommodation tubular member, the slide tube not being fixed to the stent accommodation tubular member; the slide tube being movable toward the proximal side, together with the stent accommodation tubular member, when the pulling wire is pulled toward the proximal side so the slide tube either is received inside the fixing tube or receives the fixing tube.