Embodiments of the present invention are generally directed to a visualization system including a small gauge vision catheter that is designed to be standalone or received within an instrument channel of a larger endoscope. The vision catheter has imaging means disposable within an imaging channel, a...http://www.google.com.au/patents/US8016749?utm_source=gb-gplus-sharePatent US8016749 - Vision catheter having electromechanical navigation
