| 主权项 |
1. A deployment device and stent assembly for treatment of a body vessel, the stent assembly comprising at least one self expanding zig zag stent having a plurality of proximal apices and defining an elongate substantially cylindrical lumen wall engaging surface, and
the deployment device comprising an elongate catheter adapted to be deployed over a guide wire, a nose cone at a proximal end of the elongate catheter, a mounting and release mechanism to retain a proximal end of the stent assembly just distal of the nose cone, a sheath over the elongate catheter adapted to retain the stent assembly in a contracted state around the elongate catheter, a release arrangement at a distal end of the elongate catheter to release the mounting and release mechanism, and a grip mounted to the sheath to enable withdrawal of the sheath arrangement, whereby upon endoluminal placement by endovascular deployment, retraction of the grip and sheath and release of the stent assembly, the stent assembly expands to engage the body vessel, wherein the mounting and release mechanism comprises a trigger wire sleeve disposed over the elongate catheter, the trigger wire sleeve having a lumen, a proximal end, a plurality of apertures in a sidewall of the proximal end, a plurality of trigger wires extending through the lumen and looping out of the apertures, at least one length of filament joining proximal apices and knotted to the proximal apices to form a length of filament between adjacent apices, wherein the at least one length of filament forms a plurality of engagement loops, each of which engages one of the plurality of trigger wires and pulls the plurality of proximal apices toward the elongate catheter. |
