Process of percutaneously administering exact doses of physiologically active agents and composite unit therefor

Claim 1

A COMPOSITE UNIT USEFUL FOR THE ADMINISTRATION OF MEASURED DOSES OF PHYSIOLOGICALLY ACITVE AGENTS BY PERCUTANEOUS ABSORPTION, SAID UNIT COMPRISING A CARRIER LAYER OF ABSORBENT MATERIAL IMPREGNATED WITH SAID ACTIVE AGENT, A SEPARATOR LAYER OF NON-ABSORBENT, NON-PERMEABLE MATERIAL SUPERPOSED OVER SAID CARRIER LAYER, A RESERVOIR LAYER OF ABSORBENT MATERIAL DISPOSED ABOVE SAID SEPARATOR LAYER, A NON-PERMEABLE, NON-ABSORBENT BLOCKING LAYER BETWEEN SAID RESERVOIR LAYER AND SAID SEPARATOR LAYER TO SEPARATE SAID LAYERS FROM EACH OTHER, SAID BLOCKING LAYER BEING ADAPTED TO PREVENT LIQUID FROM FLOWING FROM AID RESERVOIR LAYER TO SAID CARRIER LAYER WHEN INTACT AND ADAPTED TO BE MOVED WHEN THE UNIT IS TO BE USED SO AS TO BRING SAID RESERVOIR LAYER INTO CONTACT WITH SAID UNDERLYING SEPARATOR LAYER, WICK MEANS IN CONTACT TO SAID CARRIER LAYER, SAID WICK MEANS BEING ADAPTED TO BE BROUGHT INTO COMMUNICATION WITH SAID RESERVOIR LAYER WHEN SAID BLOCKING LAYER IS MOVED, SAID RESERVOIR LAYER BEING CHARGED WITH A TRANSPORTING FLUID FOR SAID ACTIVE AGENT, AND A COVER LAYER SUPERPOSED OVER SAID RESERVOIR LAYER AND ADAPTED TO PREVENT EVAPORATION OF SAID TRANSPORTING FLUID.