The other component to this study will be to challenge how investigators are examining closure devices in the animal model. Many researchers, including authors of this protocol, have utilized bursting pressure as an objective test to assess the integrity of a completed closure. Current surgical practice uses the insufflation of an endoscope or even a bulb syringe to test for leak of a colonic anastomosis. We intend to measure the pressures that are achieved in a clinical setting to determine the bursting pressures that are required to assess NOTES closure and eliminate the likely unsupported value being placed on a higher bursting pressure commonly quoted in NOTES closure studies.