Implants for treatment of obesity may be placed within the stomach and/or
esophagus or around the outside surface of the stomach and/or esophagus.
The implants comprise at least a portion constructed of a shape memory
material. The implants are thus adapted to be implanted in a deformed
shape, and then to be transformed through the application of activation
energy into a memorized shape. The shape and/or size transformation
induces a change in shape of the stomach and/or esophagus, thus altering
the normal digestive path of food entering the patient's gastrointestinal
tract.