Sustained action pill

Claim 1

IN A SUSTAINED ACTION PILL TO RELEASE MEDICAMENT OVER AN EXTENDED PERIOD FOR MEDICATION OF THE ALIMENTARY TRACT, A PLURALITY OF MEDICAMENT LAYERS, HEAT TREATED CONTROL MEMBRANES HAVING PORES CONTAINING A POER CLOSURE SUBSTANCE SEPARATING ADJACENT MEDICAMENT LAYERS, ALIMENTARY FLUIDS RENDERING EACH OF THE MEMBRANES PERMEABLE AFTER ACTING THEREON FOR A PERIOD BY REMOVING AT LEAST PARTIALLY THE PORE CLOSURE SUBSTANCE FROM THE PORES OF THE MEMBRANES, THE TEMPERATURE AND DURATION OF THE MEMBRANE HEAT TREATMENT SOFTENING THE MEMBRANE AND PORE CLOSURE SUBSTANCE TO DECREASE THE SIZE OF THE MEMBRANE PORES AND LENGTHEN THE PERIOD THE CONTROL MEMBRANES RESIST PENETRATION BY THE ALIMENTARY FLUIDS, THE ALIMENTARY FLUIDS PENETRATING THE PREAMBLE MEMBRANE TO LEACH ITS CORRESPONDING MEDICAMENT LAYER THERETHROUGH AND THEREAFTER WET THE NEXT MEMBRANE TO RENDER IT PERMEABLE AFTER A PERIOD OF EXPOOSURE THERETO, EACH OF THE MEMBRANES REMAINING PERMEABLE AND INTACT TO CONTROL FLUID FLOW AT LEAST UNTIL SUBSTANTIALLY ALL OF THE MEDICAMENT IN THE LAYER THEREBENEATH HAS BEEN LEACHED THERETHROUGH.