Oxygen electrode, biosensor and processes for manufacturing same
First Claim
Patent Images
1. An oxygen electrode comprising:
- a plastic sheet having a planar surface;
an Ag/AgCl anode pattern on said surface of the plastic sheet;
a first electrode lead and pad pattern formed on the surface of the plastic sheet and electrically connected to said anode pattern;
a cathode pattern formed on said surface of the plastic sheet;
a second electrode lead and pad pattern formed on the surface of the plastic sheet and electrically connected to said cathode pattern;
a paraffin layer located on said surface of the plastic sheet over said patterns, said paraffin layer comprising a paraffin having a softening point of about 100°
to 150°
C. and being configured so as to delineate a sensitive area of the plastic sheet where portions of said anode and cathode patterns are exposed;
a carrier sheet formed of a natural or synthetic paper or a woven or non-woven cloth overlying said sensitive area and contacting said portions of the anode and cathode patterns; and
a gas permeable membrane overlying a first portion of the carrier sheet and the paraffin layer, said membrane being positioned and configured so that there is a second portion of the carrier sheet which is not covered by the membrane, whereby an electrolyte solution may be impregnated through said second portion of the carrier sheet.
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Abstract
An oxygen electrode comprising a plastic sheet, two or three electrode patterns formed on the plastic sheet, a paraffin layer formed on the peripheral portion of the plastic sheet for delineating a sensitive area, a carrier sheet impregnated with an electrolyte and placed on the central portion or the sensitive area of the plastic sheet, and a gas permeable membrane covering the carrier sheet and the paraffin layer. A biosensor may be also provided by further providing a microorganism or enzyme-immobilized layer on the gas permeable membrane of the above oxygen electrode.
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Citations
17 Claims
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1. An oxygen electrode comprising:
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a plastic sheet having a planar surface; an Ag/AgCl anode pattern on said surface of the plastic sheet; a first electrode lead and pad pattern formed on the surface of the plastic sheet and electrically connected to said anode pattern; a cathode pattern formed on said surface of the plastic sheet; a second electrode lead and pad pattern formed on the surface of the plastic sheet and electrically connected to said cathode pattern; a paraffin layer located on said surface of the plastic sheet over said patterns, said paraffin layer comprising a paraffin having a softening point of about 100°
to 150°
C. and being configured so as to delineate a sensitive area of the plastic sheet where portions of said anode and cathode patterns are exposed;a carrier sheet formed of a natural or synthetic paper or a woven or non-woven cloth overlying said sensitive area and contacting said portions of the anode and cathode patterns; and a gas permeable membrane overlying a first portion of the carrier sheet and the paraffin layer, said membrane being positioned and configured so that there is a second portion of the carrier sheet which is not covered by the membrane, whereby an electrolyte solution may be impregnated through said second portion of the carrier sheet. - View Dependent Claims (2, 3)
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4. An oxygen electrode comprising:
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a plastic sheet having a planar surface; an Ag/AgCl anode pattern on said surface of the plastic sheet; a first electrode lead and pad pattern formed on the surface of the plastic sheet and electrically connected to said anode pattern; a cathode pattern formed on said surface of the plastic sheet; a second electrode lead and pad pattern formed on the surface of the plastic sheet and electrically connected to said cathode pattern; a paraffin layer located on said surface of the plastic sheet over said patterns, said paraffin layer comprising a paraffin having a softening point of about 100°
to 150°
C. and being configured so as to delineate a sensitive area of the plastic sheet where portions of said anode and cathode patterns are exposed;a carrier sheet formed of a natural or synthetic paper or a woven or non-woven cloth overlying said sensitive area and contacting said portions of the anode and cathode patterns, said carrier sheet being impregnated with a gel; and a gas permeable membrane overlying a first portion of the carrier sheet and the paraffin layer, said membrane being positioned and configured so that there is a second portion of the carrier sheet which is not covered by said membrane, whereby an electrolyte solution may be impregnated through said second portion of the carrier sheet. - View Dependent Claims (5)
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6. An biosensor comprising:
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a plastic sheet having a planar surface; an Ag/AqCl anode pattern on said surface of the plastic sheet; a first electrode lead and pad pattern formed on the surface of the plastic sheet and electrically connected to said anode pattern; a cathode pattern formed on said surface of the plastic sheet; a second electrode lead and pad pattern formed on the surface of the plastic sheet and electrically connected to said cathode pattern; a paraffin layer located on said surface of the plastic sheet over said patterns, said paraffin layer comprising a paraffin having a softening point of about 100°
to 150°
C. and being configured so as to delineate a sensitive area of the plastic sheet where portions of said anode and cathode patterns are exposed;a carrier sheet formed of a natural or synthetic paper or a woven or non-woven cloth overlying said sensitive area and contacting said portions of the anode and cathode patterns; a gas permeable membrane overlying a first portion of the carrier sheet and the paraffin layer, said membrane being positioned and configured so that there is a second portion of the carrier sheet which is not covered by said membrane, whereby an electrolyte solution can be impregnated through said second portion of the carrier sheet; and an enzyme or microorganism-immobilized layer on the gas permeable membrane.
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7. A process for manufacturing an oxygen electrode comprising:
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preparing a plastic sheet having a planar surface; forming an Ag/AqCl anode pattern on said surface of the plastic sheet; forming a first electrode lead and pad pattern that is electrically connected to said anode pattern on the surface of the plastic sheet; forming a cathode pattern on said surface of the plastic sheet; forming a second electrode lead and pad pattern that is electrically connected to said cathode pattern on the surface of the plastic sheet and; fusing a paraffin layer onto said surface of the plastic sheet over said patterns, said paraffin layer comprising a paraffin having a softening point of about 100°
to 150°
C.;configuring said paraffin layer so as to delineate a sensitive area of the plastic sheet where portions of the anode and cathode patterns are exposed; placing a carrier sheet formed of a natural or synthetic paper or a woven or non-woven cloth on the plastic sheet so as to overlie said sensitive area and contact said portions of the anode and cathode patterns; placing a gas permeable membrane over a first portion of the carrier sheet and the paraffin layer, said membrane being positioned and configured so that there is a second portion of the carrier sheet which is not covered by said membrane; and impregnating the carrier sheet with an electrolyte through said second portion of the carrier sheet. - View Dependent Claims (8, 9, 10)
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11. A process for manufacturing an oxygen electrode comprising:
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preparing a plastic sheet having a planar surface; forming an Ag/AgCl anode pattern on said surface of the plastic sheet; forming a first electrode lead and pad pattern that is electrically connected to said anode pattern on the surface of the plastic sheet; forming a cathode pattern on said surface of the plastic sheet; forming a second electrode lead and pad pattern that is electrically connected to said cathode pattern on the surface of the plastic sheet and; fusing a paraffin layer onto said surface of the plastic sheet over said patterns, said paraffin layer comprising a paraffin having a softening point of about 100°
to 150°
C.;configuring said paraffin layer so as to delineate a sensitive area of the plastic sheet where portions of the anode and cathode patterns are exposed; placing a carrier sheet formed of a natural or synthetic paper or a woven or non-woven cloth on the plastic sheet so as to overlie said sensitive area and contact said portions of the anode and cathode patterns; impregnating the carrier sheet with a gel; placing a gas permeable membrane over a first portion of the carrier sheet and the paraffin layer, said membrane being positioned and configured so that there is a second portion of the carrier sheet which is not covered by said membrane; and impregnating the carrier sheet with an electrolyte through said second portion of the carrier sheet. - View Dependent Claims (12)
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13. A process for manufacturing a biosensor comprising:
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preparing a plastic sheet having a planar surface; forming an Ag/AgCl anode pattern on said surface of the plastic sheet; forming a first electrode lead and pad pattern that is electrically connected to said anode pattern on the surface of the plastic sheet; forming a cathode pattern on said surface of the plastic sheet; forming a second electrode lead and pad pattern that is electrically connected to said cathode pattern on the surface of the plastic sheet and; fusing a paraffin layer onto said surface of the plastic sheet over said patterns, said paraffin layer comprising a paraffin having a softening point of about 100°
to 150°
C.;configuring said paraffin layer so as to delineate a sensitive area of the plastic sheet where portions of the anode and cathode patterns are exposed; placing a carrier sheet formed of a natural or synthetic paper or a woven or non-woven cloth on the plastic sheet so as to overlie said sensitive area and contact said portions of the anode and cathode patterns; placing a gas permeable membrane over a first portion of the carrier sheet and the paraffin layer, said membrane being positioned and configured so that there is a second portion of the carrier sheet which is not covered by said membrane; forming an enzyme or microorganism-immobilized layer on the gas permeable membrane; and impregnating the carrier sheet with an electrolyte through said second portion of the carrier sheet.
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14. A biosensor comprising:
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a plastic sheet having a planar surface; an Ag/AgCl anode pattern on said surface of the plastic sheet; a first electrode lead and pad pattern formed on the surface of the plastic sheet and electrically connected to said anode pattern; a cathode pattern formed on said surface of the plastic sheet; a second electrode lead and pad pattern formed on the surface of the plastic sheet and electrically connected to said cathode pattern; a paraffin layer located on said surface of the plastic sheet over said patterns, said paraffin layer comprising a paraffin having a softening point of about 100°
to 150°
C. and being configured so as to delineate a sensitive area of the plastic sheet where portions of said anode and cathode patterns are exposed;a carrier sheet formed of a natural or synthetic paper or a woven or non-woven cloth overlying said sensitive area and contacting said portions of the anode and cathode patterns, said carrier sheet being impregnated with a gel; a gas permeable membrane overlying a first portion of the carrier sheet and the paraffin layer, said membrane being positioned and configured so that there is a second portion of the carrier sheet which is not covered by said membrane, whereby an electrolyte solution can be impregnated through said second portion of the carrier sheet; and an enzyme or microorganism-immobilized layer on the gas permeable membrane. - View Dependent Claims (15)
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16. A process for manufacturing a biosensor comprising:
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preparing a plastic sheet having a planar surface; forming an Ag/AgCl anode pattern on said surface of the plastic sheet; forming a first electrode lead and pad pattern that is electrically connected to said anode pattern on the surface of the plastic sheet; forming a cathode pattern on said surface of the plastic sheet; forming a second electrode lead and pad pattern that is electrically connected to said cathode pattern on the surface of the plastic sheet and; fusing a paraffin layer onto said surface of the plastic sheet over said patterns, said paraffin layer comprising a paraffin having a softening point of about 100°
to 150°
C.;configuring said paraffin layer so as to delineate a sensitive area of the plastic sheet where portions of the anode and cathode patterns are exposed; placing a carrier sheet formed of a natural or synthetic paper or a woven or non-woven cloth on the plastic sheet so as to overlie said sensitive area and contact said portions of the anode and cathode patterns; impregnating the carrier sheet with a gel; placing a gas permeable membrane over a first portion of the carrier sheet and the paraffin layer, said membrane being positioned and configured so that there is a second portion of the carrier sheet which is not covered by said membrane; forming an enzyme or microorganism-immobilized layer on the gas permeable membrane; and impregnating the carrier sheet with an electrolyte through said second portion of the carrier sheet. - View Dependent Claims (17)
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Specification