Waffle Y technique: pCONus for tandem bifurcation aneurysms of the middle cerebral artery.Broad based bifurcation aneurysms are challenging.  Unlike conventional stents, the distal end of the new pCONus device opens like a blossoming flower inside of the aneurysm to facilitate the waffle cone technique.  In a case with tandem unruptured broad based middle cerebral artery bifurcation aneurysms, the complex anatomical challenge was resolved by a unique combination of both techniques: two pCONus deployed in Y configuration, offering stable neck coverage for coiling both aneurysms. 
pCONus