Patent ID: 8740988

Claim:
A bariatric balloon for placement within a human stomach, the human stomach having an antral pouch position for receiving food into the stomach, a pyloric sphincter for discharging digested food from the stomach, and a mucosa lining of the stomach, the bariatric balloon comprising: an antral chamber having a gas pressure therein, the antral chamber having a shape and size for contact with the mucosa lining of the stomach adjacent the antral pouch; the antral chamber having: an elastic superior wall having a convex shape forced by the gas pressure within the antral chamber, the superior wall facing the antral pouch of the stomach; a non-elastic inferior wall having a planar shape, said superior and inferior walls mutually spaced apart for defining a volume of the antral chamber; and an annular wall having a cylindrical shape, the annular wall: (i) joined at an upper periphery thereof with the elastic superior wall, (ii) joined at a lower periphery thereof with the non-elastic inferior wall, (iii) having an elasticity between that of the elastic superior wall and the non-elastic inferior wall; and (iv) positioned against and pressed against the mucosa lining by the gas pressure within the antral chamber; a gas filled pyloric chamber joined with, and positioned below, the antral chamber, a pyloric chamber wall encompassing the pyloric chamber and positioned in contact with the mucosa lining; and together, the gas-filled antral and pyloric chambers defining a volume less than a volume of the human stomach.