Method for manufacturing electrochemical sensor and structure thereof

• US 20070023283A1
• Filed: 10/02/2006
• Published: 02/01/2007
• Est. Priority Date: 01/30/2003
• Status: Abandoned Application

• Current Assignee: Chun-Mu Huang
• Original Assignee: Chun-Mu Huang
• Inventors: Huang, Chun-Mu
• Application Number:
  US11/541,926
• Publication Number:
  US 20070023283A1
• Time in Patent Office: Days
• US Class Current: 204/400
• CPC Class Codes: B29C 45/0001 characterised by the choice of material
• CPC Class Codes: B29C 45/14639 for obtaining an insulating effect, e.g. for electrical components
• CPC Class Codes: B29C 45/16 Making multilayered or multicoloured articles B29C45/0062 takes precedence; feeding colouring materials into the injection unit B29C45/1816
• CPC Class Codes: G01N 27/3272 Test elements therefor, i.e. disposable laminated substrates with electrodes, reagent and channels optical biosensors G01N33/52
• CPC Class Codes: H05K 1/095 for polymer thick films, i.e. having a permanent organic polymeric binder
• CPC Class Codes: H05K 3/101 by casting or moulding of conductive material

Abstract

A method for manufacturing an electrochemical sensor and a structure thereof are provided. The method includes steps of (a) providing an injection-molding device, (b) providing an isolating substrate having a first recess and a first through hole, (c) positing the isolating substrate in the injection-molding device, (d) injecting a conductive plastic material into the injection-molding device for forming a conductive strip disposed in the first recess and including an output terminal and a testing electrode disposed in the first through hole, (e) providing a chemical reagent, and (f) positing the chemical reagent on the testing electrode for testing a sample solution.

Claims

1. A method for manufacturing an electrochemical sensor, comprising steps of:

(a) injection-molding an insulation substrate having a first recess and a first through hole;

(b) injection-molding a first conductive strip in said first recess, said first conductive strip including a first output terminal and a first testing electrode disposed in said first through hole;

(c) providing a chemical reagent; and

(d) positing said chemical reagent on said first testing electrode for testing an analyte in a sample.

2. The method according to claim 1, wherein said sample is a fluid solution and said chemical reagent tests said analyte and produces an electric measuring signal to be outputted via said testing electrode, wherein said electric measuring signal has a proportion with a concentration of said analyte.

3. The method according to claim 2, wherein said first testing electrode is further electrically connected to an electronic meter.

4. The method according to claim 1, wherein said first conductive strip is composed of a resin mixed with at least one of a conductive carbon or a metal powder.

5. The method according to claim 4, wherein said resin is at least one of a thermosetting resin or a thermoplastic resin.

6. The method according to claim 4, wherein said resin is an epoxy resin.

7. The method according to claim 4, wherein said conductive carbon is at least one selected from a group consisting of a carbon black, a graphite power, a carbon fiber and a carbon nartotube.

8. The method according to claim 4, wherein said metal powder is one selected from a group consisting of a gold powder, a platinum powder, a palladium powder, and a rhodium powder.

9. The method according to claim 4, wherein said conductive carbon is of a weight density ranged from 3% to 80% in said conductive plastic material.

10. The method according to claim 4, wherein said metal powder is of a weight density ranged from 0.1% to 5% in said conductive plastic material.

11. The method according to claim 4, wherein said step (b) further comprises an antecedent step of:

mixing said resin with at least one of said conductive carbon and said metal powder for forming said first conductive strip.