Interface for iontophoresis with hydrating mechanism
AssigneeHisamitsu Pharmaceuticals Co., Inc.
InventorKeiichiro Okabe
Life of this patent
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Abstract
An interface composed of an aqueous solution supply portion capable of providing a fine hole for supplying an aqueous solution, a water-permeable electrode, and a water-absorbable or water-permeable film-like membrane, laminated integrally, wherein the fine hole for supplying the solution is made in the aqueous solution supply portion at the time of use, the aqueous solution is supplied through the water-permeable electrode and water-absorbable or water-permeable film-like membrane, and, when the aqueous solution reaches them, the drug or the drug-containing water-soluble layer dissolve and a locally high concentration solution of the drug is formed.
Claims6
An interface for iontophoresis, comprising:
- an electrode having a first side and a second side opposite the first side, the electrode having a first opening;
- a reservoir of an aqueous solution laminated to the first side of the electrode, the reservoir having a second opening aligned with the first opening in the electrode;
- a water-supplying film laminated to the second side of the electrode and having a third opening aligned with the first and second openings;
- a medication in dry-form positioned on the water-supplying film;
- and
- a removable shield covering over the water-supplying film and sandwiching the medication between the shield and the water-supplying film, wherein the shield has a projection blocking at least the second opening to contain the solution in the reservoir,
- wherein the aqueous solution in the reservoir is supplied to the water-supplying film by a capillary action, which solution dissolves the medication upon removal of the shield from the water-supplying film.
Dependencies are inferred from the claim text.