A New Device to Clarify the Position of the Endoscope Tip during Endoscopic Diagnosis and Therapeutic Procedures

In our practice of gastrointestinal endoscopy we have noticed that the use of internal landmarks to determine the anatomical position of the endoscope tip can be inaccurate. This was especially the case during colonoscopy [1]; sometimes it has been required to spray water through the endoscope channel and watch how it fell because this was the only way to confirm the gravitational vertical direction, which does not necessarily match the upper and lower orientation of the video endoscopy monitor.