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Intrasaccular flow disruption is a viable alternative to other endovascular treatments for saccular or wide-necked bifurcation intracranial aneurysms; however, wide neck aneurysms with irregular shapes or shallow depth may not be amenable to treatment currently available intrasaccular devices. Here, we present the first ever case report of the novel Saccular Endovascular Aneurysm Lattice Embolization System (SEAL™). The versatile utility of the SEAL™ device is demonstrated in a patient with acute subarachnoid hemorrhage (SAH) from a ruptured, complex, left middle cerebral artery (MCA) trilobed shallow wide-necked bifurcation aneurysm. Deployment and implantation of the SEAL device were technically feasible, safe, and conformed well to the irregular shape of the complex, ruptured aneurysm. Immediate total aneurysm occlusion was observed after implantation. Importantly, 1-year angiographic follow-up demonstrated durable, complete occlusion with no safety concerns. The SEAL device is a promising new novel technology which has the potential to treat very shallow aneurysms with limited height and irregular, multilobulated aneurysms. [ABSTRACT FROM AUTHOR]