Electrode device having recessed part

• US 20060206186A1
• Filed: 06/11/2003
• Published: 09/14/2006
• Est. Priority Date: 06/12/2002
• Status: Active Grant

• Current Assignee: Hisamitsu Pharmaceutical Company Incorporated
• Original Assignee: Hisamitsu Pharmaceutical Company Incorporated
• Inventors: Mori, Kenji, Maeda, Hiroyuki, Higo, Naruhito, Ogawa, Tatsuya, Fuchita, Yasushi, Sato, Shuji, Takahashi, Saori
• Granted Patent: US 7,502,654 B2
• Time in Patent Office: Days
• US Class Current: 607/153
• CPC Class Codes: A61B 2562/187 Strain relief means
• CPC Class Codes: A61N 1/0424 Shape of the electrode
• CPC Class Codes: A61N 1/044 Shape of the electrode
• CPC Class Codes: A61N 1/0448 Drug reservoir
• CPC Class Codes: A61N 1/0492 Patch electrodes A61N1/0412, A61N1/0428 take precedence

Abstract

The invention provides an electrode device that prevents disconnection of an electrode layer effectively by reducing stress at the time when a recess is formed.

An electrode device (10) has a protrusion (70), which projects upward, in the part of an outward flange section (110f), other than a recess (60) formed by molding. The protrusion (70) is arranged so as to surround an outer periphery of the recess (60). When the recess (60) is cold-pressed, the protrusion (70) prevents warp (warp waving along a peripheral direction) in the outward flange section (110f) from occurring. Consequently, the protrusion (70) also eases warp of an electrode layer (30) extending on the outward flange section (110f) and prevents disconnection of the electrode layer (30).

Claims

1. An electrode device having a recess, comprising:

a substrate film including a recess projecting upward, an outward flange section surrounding the periphery of the opening of the recess, and a lead section extending from the outward flange section;

an electrode layer leading to the lead section from a bottom and a sidewall of the recess through the outward flange section on the substrate film; and

a deformed portion that is deformed so as to cause the outward flange section of the substrate film to project or hollow and formed so as to surround the recess on the outward flange.

2. The electrode device according to claim 1, wherein the substrate film comprising a member obtained by laminating a plastic film and a metal film, and it is possible to bend the laminated member easily with a hand and to hold a bent state.

3. The electrode device according to claim 1, wherein the deformed portion projects upward to be a seal portion for a cap member covering the recess.

4. The electrode device according to claim 3, wherein the recess is a portion in which gel containing an electrolyte is put, and the deformed portion projecting upward stops leakage of the gel when the gel is put in the recess.

5. The electrode device according to claim 1, wherein the deformed portion is formed using molding of the recess.

6. The electrode device according to claim 1, wherein the deformed portion is continuously formed on the outward flange excluding a region where the electrode layer extends.