According to the manufacturer, this closed-cell low-profile device is designed to provide tracking through tortuous anatomy.  The monorail delivery system allows rapid catheter exchanges.  They say that the Carotid Wallstent is the only carotid stent indicated for use in high...

The device is a self-expanding nitinol stent system which is designed for the palliative treatment of malignant neoplasms in the biliary tree. The comes pre-mounted on a 6F over-the-wire delivery system. 

This is Terumo's carotid artery stent system. They claim it has the flexibility of an open cell design while outperforming the benefits of a closed cell stent. The stent is constructed from a double layered nitinol mesh and is a 5F rapid exchange system over a 0.014 inch wire. The stent is...

This is Abbott's carotid stent system. It is a nitinol stent available in straight and tapered versions. They recommend that it is used in conjunction with their Emboshield embolic protection system . It is available in 7-10mm diameters and 20-40mm lengths.