Patent ID: 7890164

Claim:
An iontophoresis device, comprising: a working electrode assembly and a non-working electrode assembly, for use in administering an ionic drug by iontophoresis; a DC electric power source connected to the working electrode assembly and the non-working electrode assembly with opposite polarities; a rod-shaped member that supports the working electrode assembly and the non-working electrode assembly; a holding portion for detachably supporting the rod-shaped member that comprises an electric power source side working electrode terminal and an electric power source side non-working electrode terminal connected to the DC electric power source with opposite polarities through wiring from the DC electric power source, the wiring being housed in the holding portion, the working electrode assembly and the non-working electrode assembly being disposed at a tip of the rod-shaped member, and a predetermined amount of spacing being provided between the working electrode assembly and the non-working electrode assembly, wherein the rod-shaped member comprises on a proximal end of a side thereof detachable from the holding portion a working electrode side contact and a non-working electrode side contact which are electrically connected to, and electrically separated from, the electric power source side working electrode terminal and the electric power source side non-working electrode terminal when the rod-shaped member is respectively physically attached to and detached from the holding portion, and the working electrode side contact and the non-working electrode side contact are connected to a working electrode and a non-working electrode in the working electrode assembly and the non-working electrode assembly, respectively.