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EP0170509A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Electrode for living body

Assignee: Mitsubishi Chemical Corp
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Filing: 1985-07-29
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Granted: —
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Expires: 2005-07-29
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Abstract

Abstract Disclosed is a metal electrode for a living body, which comprises a noble metal wire and an insulating covering layer formed around the periphery of the noble metal wire. At least a part of the portion of the insulating covering layer falling in contact with the noble metal wire is composed of a crosslinked epoxy resin. The outermost layer of the insulating covering layer is composed of a polyurethane. Either or both of a part of the tip end and side face of the metal electrode is directly covered with a polyurethane porous membrane instead of the insulating covering layer. The electrode is advantageous in that (a) the adhesion of a membrane to the insulating covering layer and the adhesion of the insulating covering layer to a metal wire of the electrode are excellent, (b) measurement can be stably performed for a long time, (c) a stabilization time required for obtaining a stable current value at the initial stage of the measurement is short, and (d) the electrode can be handled very easily and has enhanced measurement precision and response characteristics.

Inventors

  • 👤 Teruyoshi Uchida
  • 👤 Junichi Tashita
  • 👤 Hisayoshi Yamamori
  • 👤 Yutaka Tsutsui
  • 👤 Hirotaka Kojima

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-29 21:23
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/28; G01N27/30

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 100 words
A metal electrode for a living body, which comprises a noble metal wire and an insulating covering layer formed around the periphery of the noble metal wire, wherein at least a part of the portion of the insulating covering layer falling in contact with the noble metal wire is composed of a crosslinked epoxy resin, the outermost layer of the insulating covering layer is composed of a polyurethane, and either or both of a part of the tip end and side face of the metal electrode is directly covered with a polyurethane porous membrane instead of the insulating covering layer.
Claim 2
Dependent Claim 100 words
A metal electrode for a living body, which comprises a noble metal wire and an insulating covering layer formed around the periphery of the noble metal wire, wherein at least a part of the portion of the insulating covering layer falling in contact with the noble metal wire is composed of a crosslinked epoxy resin, the outermost layer of the insulating covering layer is composed of a polyurethane, and either or both of a part of the tip end and side face of the metal electrode is directly covered with a polyurethane porous membrane instead of the insulating covering layer.
Claim 3
Dependent Claim 39 words
A metal electrode for a living body according to claim 1, wherein the noble metal wire comprises a wire of a noble metal and a layer of a transition metal formed around the periphery of the noble metal wire.
Claim 4
Dependent Claim 64 words
A metal electrode for a living body according to claim 1, wherein the polyurethane porous membrane comprises a dense film having an average pore size not larger than 0.7 µm as the outermost layer and an inner layer contiguous to said dense film, said inner layer having-a pore size equal to or larger than the pore size of the pores of the outermost layer.
Claim 5
Dependent Claim 38 words
A metal electrode for a living body according to claim 1, wherein the polyurethane constituting the polyurethane porous membrane has a 100% modulus of at least 10 kg/cm 2 as calculated as a uniform film of said polyurethane.
Claim 6
Dependent Claim 39 words
A metal electrode for a living body according to claim 1, wherein at least the outer side of the polyurethane porous membrane is covered with a compound selected from the group consisting of glycerol, propylene glycol and polyethylene glycol.

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