METHOD OF MEASURING QUANTITY OF SUBSTRATE

• US 20130020208A1
• Filed: 09/11/2012
• Published: 01/24/2013
• Est. Priority Date: 11/30/2000
• Status: Abandoned Application

• Current Assignee: Panasonic Healthcare Company Limited (PHC Holdings Corporation)
• Original Assignee: Panasonic Healthcare Company Limited (PHC Holdings Corporation)
• Inventors: Miyazaki, Shoji, Tokunaga, Hiroyuki, Tokuno, Yoshinobu, Matsumoto, Kazuhiro, Sawada, Yasuhiko
• Application Number:
  US13/609,305
• Publication Number:
  US 20130020208A1
• Time in Patent Office: Days
• US Class Current: 205/777.5
• CPC Class Codes: A61B 2562/0295 Strip shaped analyte sensors for apparatus classified in A61B5/145 or A61B5/157
• CPC Class Codes: A61B 5/1486 using enzyme electrodes, e.g. with immobilised oxidase
• CPC Class Codes: C12Q 1/001 Enzyme electrodes
• CPC Class Codes: C12Q 1/005 involving specific analytes or enzymes including groups of enzymes, e.g. oxydases; C12Q1/004 takes precedence
• CPC Class Codes: C12Q 1/006 for glucose
• CPC Class Codes: G01N 27/26 by investigating electrochemical variables; by using electrolysis or electrophoresis
• CPC Class Codes: G01N 27/327 Biochemical electrodes , e.g. electrical or mechanical details for in vitro measurements
• 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: G01N 27/3274 Corrective measures, e.g. error detection, compensation for temperature or hematocrit, calibration coding of calibration information G01N33/48771
• CPC Class Codes: G01N 33/48771 Coding of information, e.g. calibration data, lot number
• CPC Class Codes: G01N 33/5438 Electrodes

Abstract

A method of measuring a quantity of a substrate contained in sample liquid is provided. This method can reduce measurement errors caused by a biosensor. The biosensor includes at least a pair of electrodes on an insulating board and is inserted into a measuring device which includes a supporting section for supporting detachably the biosensor, plural connecting terminals to be coupled to the respective electrodes, and a driving power supply which applies a voltage to the respective electrodes via the connecting terminals. One of the electrodes of the biosensor is connected to the first and second connecting terminals of the measuring device only when the biosensor is inserted into the measuring device in a given direction, and has a structure such that the electrode becomes conductive between the first and second connecting terminals due to a voltage application by the driving power supply.

Claims

1-33. -33. (canceled)

34. A method of measuring a quantity of a substrate, comprising:

providing a biosensor to which sample liquid containing a substrate is supplied;

providing a measuring device which includes a temperature measuring unit measuring a temperature inside the measuring device;

detecting a temperature change between a temperature measured before the quantity of the substrate is measured and a temperature measured when the quantity of the substrate is measured; and

determining, according to the temperature change, whether the quantity of the substrate is measured or not.

35. The method of claim 34, further comprising stopping measurement of the substrate when the temperature change exceeds a predetermined threshold.

36. The method of claim 34, wherein the step of detecting the temperature change comprises intermittently detecting the temperature measured before the quantity of the substrate is measured.

37. The method of claim 34, wherein the temperature measuring unit of the measuring device comprises a plurality of temperature measuring sections for measuring values of the temperature inside the measuring device.