Patent ID: 6908448

Claim:
A system being suitable for being secured substantially adjacent to a surface of a subject so as to effect delivery of at least one substance through said surface and into said subject, comprising: at least one aperture for receiving at least one ultrasonic transmission, said at least one substance being releasably secured substantially adjacent to said at least one aperture; a sonic member disposed with respect to said at least one aperture so as to communicate said at least one transmission to said at least one substance so as to effect said delivery of said at least one substance through said surface of said subject; at least one ultrasonic transducer suitable for being positioned substantially adjacent to said aperture so as to emit ultrasonic transmissions through said aperture, and wherein a replaceable cap includes said substance, aperture and sonic member; wherein said replaceable cap further comprises a pad substantially containing said substance and is positioned substantially between said aperture and sonic member; and a semi-permeable film positioned substantially adjacent to said pad and forming an ultrasonically activated normally closed valving function to control delivery of said at least one substance through said surface of said subject.