abstract |
The present invention relates generally to improved cathodes ( 24 ) for use in an electrotransport device ( 10 ) for transdermally or transmucosally delivering a beneficial agent (e.g., a drug) to, or extracting a body analyte (e.g., glucose) from, the body surface of a patient. Most particularly, the present invention relates to a cathodic electrode ( 24 ) in the form of a silver halide foil which can be made, e.g., by forging particulate silver chloride. The cathode ( 24 ) does not absorb agent (e.g., drug), eliminates the need for binders, solvents and processing aids during the manufacturing process, and increases dimensional freedom of design. |