a medical ventilation device comprising a cannula having proximal and distal ends ; an inflatable cuff adapted to be inflated to an inspiratory pressure , the cuff attached to and surrounding a portion of the cannula toward the distal end thereof ; an inspiratory pressure inflation tube having first and second ends , the first end in communication with an interior of the inflatable cuff , the second end adapted to communicate with an inspiratory pressure source ; and a pressure valve in communication with the inspiratory pressure inflation tube .