Iontophoresis device

Abstract

The present invention provides an iontophoresis device with high administration efficient of a drug. An iontophoresis device, including an active electrode structure including: an electrode to which a positive electrical potential is applied; a drug holding part for holding a drug solution containing positively charged drug ions, the drug holding part being placed on a front side of the electrode; a cellulose-based resin film placed on a front side of the drug holding part or a complex film composed of a cation exchange membrane and a cellulose-based resin film placed on a front side of the cation exchange membrane, the complex film being placed on a front side of the drug holding part, in which the drug ions are administered through the cellulose-based resin film.

1 . An iontophoresis device, comprising an active electrode structure comprising:
 an electrode to which a positive electrical potential is applied;   a drug holding part for holding a drug solution containing positively charged drug ions, the drug holding part being placed on a front side of the electrode; and   a cellulose resin film selected from the group consisting of regenerated cellulose, cellulose ester, cellulose ether, and cellulose nitrate and placed on a front side of the drug holding part,   wherein the positively charged drug ions are administered through the cellulose resin film.   
   
   
       2 . The iontophoresis device according to  claim 1 , wherein a cation exchange group is introduced to the cellulose resin film. 
   
   
       3 . The iontophoresis device according to  claim 1 , wherein:
 the active electrode structure further comprising an electrolyte solution holding part for holding an electrolyte solution in contact with the electrode, and an anion exchange membrane placed on a front side of the electrolyte solution holding part; and   the drug holding part is placed on a front side of the anion exchange membrane.   
   
   
       4 . The iontophoresis device according to  claim 3 , further comprising a counter electrode structure, comprising:
 a second electrode to which a negative electrical potential is applied;   a second electrolyte solution holding part for holding an electrolyte solution in contact with the second electrode;   a second cation exchange membrane placed on a front side of the second electrolyte solution holding part;   a third electrolyte solution holding part for holding an electrolyte solution, the third electrolyte solution holding part being placed on a front side of the second cation exchange membrane; and   a second anion exchange membrane placed on a front side of the third electrolyte solution holding part.