Extraction device, analyzer, extraction method, and analysis method

• US 8,046,043 B2
• Filed: 11/16/2005
• Issued: 10/25/2011
• Est. Priority Date: 11/16/2004
• Status: Expired due to Fees

• Current Assignee: Sysmex Corporation
• Original Assignee: Sysmex Corporation
• Inventors: Okada, Seiki, Asano, Kaoru, Maekawa, Yasunori
• Primary Examiner(s): Mallari; Patricia
• Assistant Examiner(s): JANG, CHRISTIAN YONGKYUN
• Application Number:
  US11/280,100
• Publication Number:
  US 20060116563A1
• Time in Patent Office: 2,169 Days
• Field of Search: 600/345, 600/347, 600/365, 604/20, 422/50, 422420-424
• US Class Current: 600/347
• 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: A61N 1/30 Apparatus for iontophoresis, i.e. transfer of media in ionic state by an electromotoric force into the body, or cataphoresis

Abstract

An extraction device for extracting an analyte from living tissue is disclosed that comprises a power source; a first electrode and second electrode connected to the power source; and a holding unit for holding a collecting medium for collecting analyte extracted from living tissue, wherein the collecting medium is in contact with both the first electrode and second electrode continuously. An analyzer comprising the extraction device, method for extracting an analyte, and method for extracting and analyzing an analyte are also described.

Claims

1. A device for extracting glucose from living tissue of a subject, the device comprising:

an extraction cartridge removably installed in the device; and

a main body;

wherein the extraction cartridge comprises;

an absorbing member for holding purified water for collecting the glucose extracted from the living tissue;

a chamber for holding the absorbing member;

a purified water supply path for supplying the purified water to the absorbing member;

a first and second electrode, the first electrode disposed adjacent the absorbing member in the chamber and the second electrode disposed on an opposite side of the absorbing member in the chamber from the first electrode; and

a mounting part; and

wherein the main body comprises;

a power source for applying a voltage for moving the glucose to the purified water using the electrodes;

a pump for holding and supplying the purified water to the absorbing member through the purified water supply path; and

a connection part for engaging the mounting part.

2. The device of claim 1, wherein the absorbing member comprises paper or a mesh sheet.

3. The device of claim 1, wherein the chamber comprises an opening for contacting the absorbing member with skin of the subject.

4. The device of claim 1, wherein the extraction cartridge further comprises an end terminal for connecting to the power source.