The lung tissue distal to the obstruction will collapse, thus allowing the surgeon's view and access to relevant structures within the thoracic cavity.
[1] Made by Fuji Systems, Tokyo, Japan, is a tracheal tube with a second lumen that contains a coaxial, balloon tipped catheter which can be advanced under fiber optic bronchoscopy and blocked in either bronchus.
[1] Produced by Cook Critical Care, Bloomington, USA, is a catheter with a balloon tip and inner lumen which contains a flexible wire which is coupled to a fiber optical bronchoscope to guide the device into the desired bronchus.
[1] By Cook Critical Care, is a catheter shaft with a distal soft nylon flexible tip and balloon which can be deflected by 90° to guide the device into either bronchus.
[1] By Smith Medical, Rosmalen, NL, has a preformed angulation at the distal tip to aid placement in the desired bronchus.