Electrochemical biosensor measuring system

• US 8,277,635 B2
• Filed: 02/26/2008
• Issued: 10/02/2012
• Est. Priority Date: 03/14/2007
• Status: Expired due to Fees

• Current Assignee: i-SENS, Inc.
• Original Assignee: i-SENS, Inc.
• Inventors: Kim, Moon Hwan, Kim, Keun Ki, Cui, Gang, Nam, Hakhyun, Cha, Geun Sig
• Primary Examiner(s): Barton, Jeffrey T
• Assistant Examiner(s): Dieterle, Jennifer
• Application Number:
  US12/530,128
• Publication Number:
  US 20100126882A1
• Time in Patent Office: 1,680 Days
• Field of Search: 204400-40315, 205/775, 205/777.5, 205/787, 205/792
• US Class Current: 205/775
• CPC Class Codes: A61B 2562/08 Sensors provided with means for identification, e.g. barcodes or memory chips
• CPC Class Codes: A61B 5/14532 for measuring glucose, e.g. by tissue impedance measurement
• CPC Class Codes: A61B 5/1486 using enzyme electrodes, e.g. with immobilised oxidase
• CPC Class Codes: B01L 2200/148 Specific details about calibrations
• CPC Class Codes: B01L 2300/0645 Electrodes
• CPC Class Codes: B01L 2300/0825 Test strips
• CPC Class Codes: B01L 3/545 for laboratory containers
• CPC Class Codes: G01N 2035/00752 bar codes
• CPC Class Codes: G01N 2035/00811 consumable or exchangeable components other than sample carriers, e.g. detectors, flow cells
• CPC Class Codes: G01N 33/48771 Coding of information, e.g. calibration data, lot number

Abstract

Disclosed herein is an electrochemical biosensor measuring device which comprises at least two photodiodes for emitting light beams at regular time intervals in a sequential manner, with the insertion of an electrochemical biosensor thereto, and a detector for sensing the emitted light beams, thereby identifying the production lot information recorded on a production lot information identification portion on the electrochemical biosensor. Thus, the device enjoys economic advantages of not requiring a high-priced optical filter in detecting the light absorbed through or reflected from the production identification information recorded in biosensor and a complicated software algorithm to recover the production lot information. Also, the measuring device automatically identifies the production lot information recorded on the biosensor, so that the frequency of inconvenience and error that occur when a user personally inputs the production lot information of the biosensor can be reduced, with the result that the measured values can be conveniently and accurately acquired.

Claims

1. A measuring method using an electrochemical biosensor measuring device and an electrochemical biosensor,

wherein the biosensor is composed of a plurality of electrodes including at least a working electrode and an auxiliary electrode prepared on at least one or two insulating plates;

a capillary sample cell for introducing a sample into the electrodes;

a reaction reagent layer, formed on the working electrode, containing a redox enzyme and an electron transfer mediator;

an electrical connection portion for connecting the working electrode and the auxiliary electrode; and

a production lot information identification portion configured such that production lot information is recorded on at least one insulating plate, which is selected from among at least two planar insulating plates and does not interrupt a connection between the electrodes, wherein the production lot information identification portion includes one or more hue marks displaying the information about differences between production lots attributable to differences in color, brightness, or chroma,

wherein the electrochemical biosensor measuring device comprises a connector having a connector port, at least two light emitters of which each emits a different color and a detector for sensing the emitted light,

and the method comprising;

inserting the biosensor into the connector port of the biosensor measuring device to activate its power (step

     1);

identifying the production lot information of the inserted biosensor by allowing said at least two light emitters to emit light beams having different wavelengths in a sequential manner at the production lot information identification portion and detecting the light beams with the production lot information identification portion provided in the biosensor (step

     2),

wherein the light beams emitted from the light emitters are sequentially detected by the detector without using a separate filter;

activating the measurement and operation processes of the biosensor measuring device in conformity with the production lot information identified at Step 2 (step

     3); and

introducing a liquid sample to the sample inlet of the biosensor to result in quantitative electrochemical information about the sample, quantifying a specific component of the liquid sample, and displaying quantification results (step

     4).

2. The measuring method according to claim 1, wherein the plurality of electrodes further include a sample fluidity determining electrode.

3. The measuring method according to claim 1, wherein the number of hue marks range from 1 to 10.

4. The measuring method according to claim 1, wherein said at least two light emitters are composed of three-component photodiodes that emit red, green and blue colors or four-components photodiodes that emit white, red, green and blue colors.

5. The measuring method according to claim 1, wherein the detector is an optical identification device.

6. The measuring method according to claim 1, wherein the light emitters and the detector are constructed in a separate or integrated structure.

7. The measuring method according to claim 1, wherein said at least two light emitters and the detector are integrated together with the body of the connector to identify the production lot information recorded in the biosensor, said body of the connector having a structure in which one or more absorption or reflection path(s) sequentially comprising a light-emitting unit, a production lot information identification portion and a detector, is (are) provided.