Iontophoresis electrode and iontophoresis device using the electrode

• US 6,006,130 A
• Filed: 02/24/1997
• Issued: 12/21/1999
• Est. Priority Date: 06/17/1994
• Status: Expired due to Term

• Current Assignee: Hisamitsu Pharmaceutical Company Incorporated
• Original Assignee: Hisamitsu Pharmaceutical Company Incorporated
• Inventors: Katagai, Kazuya, Higo, Naruhito, Mori, Kenji, Nakamura, Katsuhiro
• Primary Examiner(s): Bockelman, Mark
• Application Number:
  US08/750,712
• Time in Patent Office: 1,030 Days
• Field of Search: 604/20-21, 604/501, 607/134, 607/149
• US Class Current: 604/20
• CPC Class Codes: A61N 1/0436 Material of the electrode
• CPC Class Codes: A61N 1/05 for implantation or insertion into the body, e.g. heart electrode A61N1/06 takes precedence
• CPC Class Codes: A61N 1/30 Apparatus for iontophoresis, i.e. transfer of media in ionic state by an electromotoric force into the body, or cataphoresis

Abstract

This invention relates to an iontophoresis electrode which is applicable to mucous membranes and oral mucous membranes, and especially capable of sticking directly on human oral mucous membranes and excellent in efficiently administering medicine and extremely easy to handle and lightweight.

An iontophoresis electrode (Ka) of this invention comprises a backing layer (1) and, a conductive layer for current dispersion (2) made of silver or silver chloride that laminated on the backing layer (1) and, a spacer layer (3) of film, sheet, or cloth shape which is made of dried polymer layer with water soluble and swelling properties and laminated on the conductive layer for current dispersion, and can be sticked to the oral mucous membrane.

Claims

1. An iontophoresis unit for an oral mucous membrane for administering through an oral cavity into a living body an effective constituent to be ionized, the iontophoresis unit comprising:

an iontophoresis device comprising

a) a backing layer;

b) a conductive layer for current dispersion; and

c) a spacer layer made of a dried polymer with water soluble and swelling properties, and containing the effective constituent;

a reference electrode; and

a grasping device for grasping the mucosal membrane between the spacer layer and the reference electrode, the grasping device comprising an electric circuit electrically connecting said iontophoresis device and said reference electrode, and a power supply connected to said electric circuit.

2. A method for using iontophoresis for an oral mucous membrane for administering through an oral cavity into a living body an effective constituent to be ionized, the method comprising said iontophoresis unit according to claim 1, wherein

said grasping device comprises two clamp-type grasping elements each having a contacting portion for contacting the oral mucous membrane;

said iontophoresis device is attached at the contacting portion of one of the clamp-type grasping devices for contacting the oral mucous membrane;

said reference electrode is attached at the contacting portion of the other of the clamp-type grasping elements; and

said iontophoresis device is fixed to the oral mucous membrane by the grasping elements grasping the oral cavity when applied, the iontophoresis device having conductivity and sticking properties which are activated by mucous existing on the surface of the mucous membrane.