Sample treating kit and sample treating method using the same for analysis with a biosensor

• US 6,867,002 B2
• Filed: 10/20/1999
• Issued: 03/15/2005
• Est. Priority Date: 10/20/1998
• Status: Expired due to Fees

• Current Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Original Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Inventors: Yoshioka, Toshihiko, Miyashita, Mariko, Nankai, Shiro
• Primary Examiner(s): Chin, Christopher L.
• Assistant Examiner(s): Padmanabhan, Kartic
• Application Number:
  US09/420,719
• Publication Number:
  US 20010049110A1
• Time in Patent Office: 1,973 Days
• Field of Search: 435/4, 435/7.1, 435/174, 435/177, 435/183, 435/184, 435/188, 435/188.5, 435/262, 435/283.1, 435/286.1, 435/287.1, 435/287.2, 435/287.7, 436/43, 436/50, 436/55, 436/147, 436174-178, 436/536, 436/543, 436/547, 436/825, 422/50, 422/105
• US Class Current: 435/7.1
• CPC Class Codes: C12Q 1/001 Enzyme electrodes
• CPC Class Codes: Y10S 436/825 Pretreatment for removal of interfering factors from sample
• CPC Class Codes: Y10T 436/11 Automated chemical analysis
• CPC Class Codes: Y10T 436/115831 Condition or time responsive
• CPC Class Codes: Y10T 436/12 Condition responsive control
• CPC Class Codes: Y10T 436/25 including sample preparation
• CPC Class Codes: Y10T 436/25125 Digestion or removing interfering materials
• CPC Class Codes: Y10T 436/2525 Stabilizing or preserving
• CPC Class Codes: Y10T 436/25375 Liberation or purification of sample or separation of material from a sample [e.g., filtering, centrifuging, etc.]
• CPC Class Codes: Y10T 436/255 including use of a solid sorbent, semipermeable membrane, or liquid extraction

Abstract

A sample solution treating instrument is provided for facilitating rapid and simplified adjustment of the condition of a sample solution proper for analysis with a biosensor before supplying the solution to the biosensor. The sample solution treating instrument includes, for example, a catalyst or an adsorbent which can remove any interfering substance in order to adjust the sample solution for measurement with a biosensor.

Claims

1. A sample solution treating instrument comprising a sample treating unit and a sample supply unit, wherein the sample treating unit contains an agent that converts a sample solution to a condition for analysis with a biosensor that electrochemically measures a specific component in the sample solution, the agent selected from the group consisting of a catalyst that converts a first interfering substance in the sample solution to a harmless substance having no adverse effect on a measurement result of the specific component obtained by analysis with the biosensor, an adsorbent that adsorbs and removes a second interfering substance from the sample solution, and a buffer agent that adjusts a pH of the sample solution to a pH range adequate for an activity of an enzyme in the biosensor, and the sample supply unit is made of an elastic material that retains the sample solution inside the sample supply unit, wherein the sample supply unit is located adjacent to the sample treating unit such that the sample solution passes through the sample treating unit to the sample supply unit after treatment, but wherein the instrument is not physically coupled to a biosensor, wherein the first interfering substance and the second interfering substance may be the same or may be different.