| abstract |
Apparatus including a proximal sensor assembly (14) and a distal sensor assembly (16) disposed on an endotracheal tube (12) at a distance from one another, wherein each sensor assembly (14, 16) includes one or more sensors that output a signal that is a function of a distance from the sensor to the nearest surrounding object such that the signal of the sensor differs detectably depending whether the sensor is located in an oral cavity, trachea, left or right bronchus of a subject. |