The EndoFLIP system consists of a balloon catheter probe that is attached to a data recorder with a screen. The balloon catheter contains a series of electrodes. When filled with a conductive fluid, it can measure the cross-sectional areas (CSAs) at different points along the balloon.
The CSAs can be translated into estimated diameters and the stoma diameter, and gastric pouch volume can be measured in real-time on the screen.
The relationship between band fill volume and band stoma size is different for every patient.