In general, the WEB device will 'self-center' as it expands within the fundus of the aneurysm, gently pushing off from the nearest wall into the center of the aneurysm. Once placed in the aneurysm, the WEB device reconstructs the parent artery/aneurysm neck interface with a continuous low porosity metal mesh which disrupts flow within the aneurysm, initiating thrombosis, and providing a robust lattice for subsequent neoendothelial tissue overgrowth.
The WEB device is constructed of nitinol wires with a platinum core in a braided self-expanding mesh configuration ( figure 1). 3 In the USA the WEB device was recently approved by the Food and Drug Administration (US FDA) for the treatment of ruptured and unruptured wide-necked aneurysms of the anterior communicating artery (ACA) and middle cerebral artery (MCA), the internal carotid artery (ICA), and basilar artery bifurcations. The WEB device has been available for clinical use in Europe since 2011. The Woven EndoBridge (WEB Microvention/Terumo, Aliso Viejo, California, USA) was developed specifically for the treatment of WNBAs. 1 The treatment of WNBAs remains technically challenging due to the need to preserve the major bifurcating vessels while still achieving a durable occlusion of the aneurysm. Wide-necked bifurcation aneurysms (WNBAs) make up 26–36% of all brain aneurysms. 10 Radiology, Bayindir Hastanesi Kavaklidere, Ankara, Turkeyĭr Adam S Arthur, Semmes-Murphey Clinic, Memphis, TN 38120, USA.9 Radiology, Koru Hospital, Yuksek Ihtisas Universitesi, Ankara, Turkey.8 Neuroradiology, NEURI Center, Bicetre Hospital, APHP, Paris-Saclay University, Saint-Aubin, France.7 Department of Neuroradiology, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK.6 Neuroradiology, Reims Champagne-Ardenne University, Reims, France.
5 Department of Neuroradiology, Stony Brook University Hospital, Stony Brook, New York, USA.4 Department of Research Collaborations, Siemens Medical Solutions USA Inc, Hoffman Estates, Illinois, USA.3 Department of Neurosurgery, Semmes-Murphey Clinic, Memphis, Tennessee, USA.2 Neurosurgery, University of Tennessee Health Science Center, Memphis, Tennessee, USA.1 Neurology, University of Tennessee Health Science Center, Memphis, Tennessee, USA.
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