An ingestible gastrointestinal capsule for mechanically stimulating a segment of the gastrointestinal wall by alternately and repeatedly pressurizing, andor vibrating it is provided. The camera then accesses the handy phone set to send the files to the computer. In addition, the end effector includes a cutting member slidably movable along the longitudinal slot and an implantable assembly which includes a first layer and a second layer, wherein the second layer includes a first portion and a second portion spaced apart from the first portion, and wherein the first layer is attached to the first portion and the second portion.