Introduction
thrombosis, aneurysm, aneurysms, occlusion, ischemic stroke, unruptured aneurysms, disability
THROMBOSIS, RECURRENCE, ANEURYSM, ANEURYSMS, ISCHEMIC STROKE, INTRACRANIAL ANEURYSMS
Due to the unique structures of small aneurysms, technical difficulties exist in the treatment of small aneurysms, including ruptured and unruptured aneurysms. Compared with clipping, intravascular embolization has lower mortality and disability rates [In recent years, with the development of manufacturing technology, the performance of coil delivery has been optimized. At the same time, to reduce the recanalization rate and enhance the durability of endovascular treatment, various materials have been added, including hydrogels, polyglycolic acid, and nylon.[The Numen Coil Embolization System (MicroPort NeuroTech, Shanghai, China) is a new electric detachable bare-metal coil made of platinum-tungsten alloys. Preclinical studies have shown that it promotes thrombosis in the aneurysm sac and vascular endothelialization in the neck to treat intracranial aneurysms. Compared with other types of spring coils, there are various coils with small sizes and lengths, which ensure the safety of the endovascular treatment of small aneurysms.In addition to the invention of appropriate spring coils, auxiliary techniques, such as stent-assisted and balloon-assisted coiling, provide patients with a minimally invasive and effective option. Compared with coiling-only methods, stent-assisted coiling techniques show similar immediate occlusion rates, lower recurrence rates, long-term angiographic occlusion rates, and higher ischemic stroke and mortality rates [Many studies on the endovascular treatment of small aneurysms have been reported [