a low profile stent device consisting of a stent plus an optional covering is placed percutaneously into a blood vessel to provide vascular closure to a nearby large diameter arteriotomy site . a self - expanding stent device is mounted onto a balloon for postdilitation and is held in a small diameter configuration by an outer case . a balloon expandable stent device has hinge and strut features that provide it with crush resistance . the cone and sheath of the deliver catheter serves as a dilator and introducer sheath to assist in delivery . an attachable guidewire reduces profile by eliminating a guidewire lumen . a locator balloon placed through the large diameter arteriotomy introducer sheath assists positioning .