Analyzer and Cartridge for Extracting Analyte

• US 20080103374A1
• Filed: 01/10/2006
• Published: 05/01/2008
• Est. Priority Date: 01/19/2005
• Status: Abandoned Application

• Current Assignee: Sysmex Corporation
• Original Assignee: Sysmex Corporation
• Inventors: Asakura, Yoshihiro, Sawa, Kenichi, Maekawa, Yasunori
• Application Number:
  US11/795,470
• Publication Number:
  US 20080103374A1
• Time in Patent Office: Days
• US Class Current: 600/322
• CPC Class Codes: A61B 5/14532 for measuring glucose, e.g. by tissue impedance measurement

Abstract

An analyzer (a blood glucose meter), which shows minor measurement errors even in the case of conducting the extraction and detection of an analyte in parallel, can be obtained. This blood glucose meter (100) comprises a sensor unit (26) having a measurement face (26a) to which glucose extracted from a subject is supplied, a light-receiving element (34) outputting a signal based on the glucose supplied to the measurement face, a sensor contact face (23a) to be in contact with the measurement face and a skin contact face (23b) to be in contact with the skin of the subject, as well as a mesh sheet (23) for supplying the glucose from the skin contact face to the measurement face. The mesh sheet is designed so that the distance between the measurement face and the skin is maintained substantially at a constant level during the contact with the skin.

Claims

1. An analyzer for analyzing an analyte extracted from a subject, comprising:

a sensor member including a supplied face supplied with said analyte extracted from said subject or a product resulting from reaction of said analyte;

signal output part outputting a signal based on said analyte or said product supplied to said supplied face; and

a liquid holding member provided with a first face coming into contact with said supplied face and a second face coming into contact with the skin of said subject and capable of holding a liquid for supplying said analyte or said product from said second face to said supplied face, wherein

said liquid holding member is so formed as to keep the distance between said supplied face and said skin substantially constant while the same is in contact with said skin.

2. The analyzer according to claim 1, wherein

said signal output part includes:

a light source applying light to said sensor member, and

a photodetector detecting the light passing through said sensor member.

3. The analyzer according to claim 1, wherein

said signal output part outputs the signal based on said analyte or said product in parallel with the supply of said analyte or said product to said supplied face.

4. The analyzer according to claim 1, further comprising:

an electrode so arranged as to come into contact with the first face of said liquid holding member, and

a power source connected to said electrode.

5. The analyzer according to claim 1, wherein

said liquid holding member is provided in the form of a sheet.

6. The analyzer according to claim 1, wherein

said liquid holding member keeps a substantially constant thickness when held between said supplied face and said skin.

7. The analyzer according to claim 1, wherein

said liquid holding member is made of nylon.

8. The analyzer according to claim 1, wherein

said liquid holding member has a thickness of not more than 1 mm.

9. The analyzer according to claim 1, wherein

said liquid holding member includes a plurality of through-holes passing through said first face and said second face.

10. A cartridge for extracting an analyte attachable to an analyzer analyzing an analyte extracted from a subject, comprising:

a sensor member including a supplied face supplied with said analyte extracted from said subject or a product resulting from reaction of said analyte; and

a liquid holding member provided with a first face coming into contact with said supplied face and a second face coming into contact with the skin of said subject and capable of holding a liquid for supplying said analyte or said product from said second face to said supplied face, wherein

said liquid holding member is so formed as to keep the distance between said supplied face and said skin substantially constant while the same is in contact with said skin.

11. The cartridge for extracting an analyte according to claim 10, wherein

said sensor member contains a first enzyme serving as a catalyst for said analyte in said supplied face.

12. The cartridge for extracting an analyte according to claim 11, wherein

said sensor member further contains a second enzyme serving as a catalyst for a first substance produced from said analyte in said supplied face.

13. The cartridge for extracting an analyte according to claim 12, wherein

said sensor member further contains a chromogenic dye reacting with a second substance produced from said first substance.

14. The cartridge for extracting an analyte according to claim 10, wherein

said liquid holding member is provided in the form of a sheet.

15. The cartridge for extracting an analyte according to claim 10, wherein

said liquid holding member keeps a substantially constant thickness when held between said supplied face and said skin.

16. The cartridge for extracting an analyte according to claim 10, wherein

said liquid holding member is made of nylon.

17. The cartridge for extracting an analyte according to claim 10, wherein

said liquid holding member has a thickness of not more than 1 mm.

18. The cartridge for extracting an analyte according to claim 10, wherein

said liquid holding member includes a plurality of through-holes passing through said first face and said second face.

19. The cartridge for extracting an analyte according to claim 18, wherein

the plurality of through-holes of said liquid holding member are arranged in the form of a lattice.

20. The cartridge for extracting an analyte according to claim 10, further comprising an electrode arranged to be held between said sensor member and said liquid holding member.

21. The cartridge for extracting an analyte according to claim 10, wherein

said liquid holding member is so arranged as to cover the whole of said supplied face.