Patent ID: 8545883

Claim:
A module for controlled drug release in the gastrointestinal tract, consisting of a matrix of a biocompatible hydrophilic polymer, at least an active principle and excipients, said module having one of the following shapes: a cylindrical shape, wherein the first base of the cylinder is peripherally flat and has a central dome-shaped concavity, and the second base is peripherally flat and has a central dome-shaped convexity, wherein said first base is fittable by stacking on the second base, and wherein said first base and said second base are substantially parallel, or a polyhedric shape, wherein at least one of the faces of the polyhedron is peripherally flat and has a central dome shaped concavity, and at least one other of the faces of the polyhedron is peripherally flat and has a central dome-shaped convexity, wherein said at least one face is liftable by stacking on said at least one other face, and wherein said at least one of the faces and said at least one other of the faces are substantially parallel.