Patent ID: 8241345

Claim:
A stent delivery system, comprising: a pusher wire, comprising: a tubular body having a pusher wire lumen; an elongate body disposed in the pusher wire lumen; a funnel shaped bumper disposed on a distal end of the tubular body; a pair of holders disposed on the elongate body; a middle bumper disposed on the elongate body distal of the pair of holders, wherein the pair of holders is configured to close around the middle bumper and secure a stent thereto when the elongate body is pulled proximally into the tubular body; and a catheter having a proximal end, a distal end, and a catheter lumen extending between the proximal end and the distal end, wherein the pusher wire is coaxially disposed within a lumen of the catheter, and wherein an opening of the funnel shaped bumper is smaller than a cross sectional area of the pair of holders when closed around the middle bumper.