Patent ID: 8444685

Claim:
A medical device assembly comprising: an inner tubular member having a proximal portion, a distal portion, a proximal guide wire opening disposed distal of the proximal portion, and a distal guide wire opening disposed at a distal end of the inner tubular member, wherein the proximal guide wire opening has a first length and a solid mandrel is disposed in proximal portion of the inner tubular member proximal of the proximal guide wire opening; an outer tubular member slidably disposed about the inner tubular member, the outer tubular member having a proximal portion, a distal portion, a guide wire opening disposed distal of the proximal portion of the outer tubular member, and a guide wire ramp extending into the proximal guide wire opening of the inner tubular member, wherein the guidewire ramp is movable relative to the inner tubular member along the first length; and a self-expanding stent positioned around a distal portion of the inner tubular member; wherein the guide wire opening of the outer tubular member has a second length that is shorter than the first length.