The device for blocking (e.g., embolizing) the side branches of an anatomical passageway under endoscopic guidance. The device comprises an elongate catheter body having a side branch blocking apparatus, such as an embolization catheter, disposed therein and further incorporating an endoscope (e.g.,...http://www.google.de/patents/US5947994?utm_source=gb-gplus-sharePatent US5947994 - Endoscopically-assisted device for endoluminal occlusion of anatomical passageway side branches