Ventrain- A novel approach to ventilation through small bore cannulas by Professor Dietmar Enk

The Ventrain device is designed to take advantage of the Bernoulli Principle to 

create a control that will use the pressure of an Oxygen source to create 

positive pressure inflow and when the appropriate orifice is blocked a negative pressure for expiration is created by the passage of air over the entrance to the endotracheal tube. This is explained in the Text.

This substantially improves the potential to ventilate through small caliber cannulas. 

The simplicity and brilliance of the design suggests an important role that will improve difficult airway management and also possibly a number of other situations.