Napoleon Measurement of Gastrojejunal Anastomosis

The Micro-Tech Endoscopic Measurement Device named Napoleon is a small catheter with a 30mm ruler calibrated at 1mm intervals with 5mm demarcations. It is classified as a Class 1, 510(k) exempt device by the FDA. The device was originally intended to measure polyps. However, it is used off-label in this study and is considered investigational.

For each case, endoscopists will first visually estimate the diameter of the GJA by comparing its size to the upper endoscope.