Electrochemically reactive cathodes for an electrotransport...

A - Human Necessities – 61 – N

Patent

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A61N 1/30 (2006.01) A61B 5/15 (2006.01) A61K 31/4468 (2006.01) A61K 31/4535 (2006.01) A61K 38/26 (2006.01) A61K 38/28 (2006.01) A61P 3/10 (2006.01) A61P 25/04 (2006.01)

Patent

CA 2319640

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.

La présente invention concerne, de façon générale, des cathodes (24) améliorées destinées à être utilisées dans un dispositif (10) d'électrotransport en vue de l'administration transdermique et transmuqueuses d'un agent bénéfique (par exemple, un médicament) ou de l'extraction d'une substance à analyser (par exemple, du glucose) via une surface du corps d'un patient. En particulier, l'invention concerne une électrode cathodique (24) se présentant sous la forme d'une feuille d'halogénure d'argent que l'on peut fabriquer, notamment, en formant du chlorure d'argent en particules. La cathode (24) n'absorbe pas l'agent (par exemple, le médicament), élimine la nécessité de recourir à des liants, à solvants et à des auxiliaires de traitement lors du procédé de fabrication, et accroît la liberté dimensionnelle de la conception.

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