Transdermal systems for the delivery of ionic agents...

Surgery – Means for introducing or removing material from body for... – Infrared – visible light – ultraviolet – x-ray or electrical...

Reexamination Certificate

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C604S501000, C424S449000

Reexamination Certificate

active

07904146

ABSTRACT:
A transdermal system for the delivery of an anesthetic or other active therapeutic agent directly to a selected site of injured skin tissue by iontophoresis is disclosed, which utilizes a transdermal skin-worn patch including a donor electrode chamber containing a donor electrode and an amount of an active agent in a form suitable for transdermal delivery in electrical communication with the donor electrode and a return electrode. The patch also contains a source of electric current connected in a circuit with the donor and return electrode, a current regulating device is optionally provided in the circuit for controlling the electrical output of the patch and at least the donor electrode chamber includes a provision for absorbing a quantity of fluid associated with weepage from adjacent injured skin tissue.

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