Fig. 1

Close-up view of the EZB placed through a single-lumen tube in a manikin. The Y-shape of the distal portion facilitates the anchorage of the blocker to the carina. The two distal extensions are colored differently, both with an inflatable cuff and a central lumen. One of the polyurethane high-pressure balloons is inflated, allowing lung collapse distal to the occlusion