Vorrichtung und Verfahren zur Erneuerung von Elektroden während der Iontophorese

An iontophoretic drug delivery device (20) having electrode renewing features includes a housing (21) having a first electrode (22), a second electrode (23), a circuit (26) for providing electrical communication between the first and second electrodes (22,23) and a source of current (27). Control means (S,28) is provided for effecting the amount of current passing between the electrodes (28,33). A removable electrolyte reservoir (29) is capable of holding electrolyte (31) and removably engaging the housing (21) so that one of the electrodes can contact electrolyte contained within the reservoir (29). A removable active agent reservoir (37) is capable of holding an active agent (40) for iontophoretic delivery. The active agent reservoir (37) is capable of removably engaging the housing (21) so that the active agent contacts one of the electrodes.