Back to ListIntracranial Stent Graft System

WILLIS® Intracranial Stent Graft System

Intracranial aneurysm is a cerebrovascular disorder in which weakness in the wall of a cerebral artery or vein causes a localized dilation or ballooning of the blood vessel. WILLIS®, researched and developed independently by MicroPort NeuroTech is first-of-its-kind product in China indicated for the treatment of intracranial aneurysms. WILLIS® intracranial stent graft system is composed of the stent, delivery system, cobalt-based alloy stent and PTFE graft. Compared with the traditional method of stent-assisted coil embolization treatment, the procedure of vascular reconstruction using WILLIS® effectively shunt the blood flow and keep it off of the aneurysm wall.


  • Ultra-thin Material
    Thickness (stent and graft): 0.13mm
    Cobalt-chromium alloy with expended polytetrafluoroethylene combined
    Sine Wave Open Design
    Reduced metal coverage
    Adaptive intracranial vascular tortuosity
    Soft material, low pressure expansion
    Reduced vascular injury
    Unique Reinforcement Ring Structure
    Excellent mechanical properties
    Enhanced stent radial force