A bronchoscope locking mechanism includes a clamping member and a nut. The clamping member includes a threaded portion and a clamping surface that defines a compressible channel. The compressible channel is configured for communication with a tracheal tube. The nut has an inner threaded surface configured to cooperate with the threaded portion of the clamping member. The compressible channel is compressed from a first position defining a first diameter to a second position defining a second diameter when the nut is advanced over the threaded portion. The second diameter is smaller than the first diameter.