Patent ID: 7883491

Claim:
A gastric occlusive device comprising: a balloon that in an inflated state is non-pillowed and spheroidal in shape, formed from two vacuum thermoformed half-sections of a multilayer film comprising: (A) a layer of sealing film, having main top and bottom surfaces; and (B) at least one layer of thermoplastic polymer film, laminated to the layer of sealing film, on at least one of the main top and bottom surfaces; wherein the sealing film has a composition and thickness imparting gas barrier character to the multilayer film and wherein the at least one layer of thermoplastic polymer film alone lacks such gas barrier character, wherein the half-sections are processed in a vacuum thermoforming die having a substantially non-planar surface, and the vacuum thermoformed half-sections are bonded to one another along peripheral portions thereof to form a peripheral seam; and an inflation element adapted to permit inflation of the balloon within the gastric cavity of a subject for treatment of said subject.