| 摘要 |
<p>A transdermal drug administration device which comprises a patch (12) that is provided with: a donor gel (30) in which a medical agent is sealed; a reference gel (34); a first electrode (38) that is connected to the donor gel (30); and a second electrode (40) that is connected to the reference gel (34). When the patch (12) is applied to the skin, a direct current is applied between the first electrode (38) and the second electrode (40) at a predetermined cycle and an alternating current is applied between the first electrode (38) and the second electrode (40) during the periods when a direct current is not applied, thereby obtaining the capacitance. The application state of the patch (12) is determined based on the thus-obtained capacitance.</p> |
