BLOOD SENSOR AND BLOOD TEST APPARATUS HAVING THE SAME

• US 20090043227A1
• Filed: 01/30/2007
• Published: 02/12/2009
• Est. Priority Date: 01/31/2006
• Status: Active Grant

• Current Assignee: PHC Holdings Corporation
• Original Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Inventors: Amano, Yoshinori, Fujiwara, Masaki
• Granted Patent: US 8,052,619 B2
• Time in Patent Office: Days
• US Class Current: 600/583
• CPC Class Codes: A61B 2562/0295 Strip shaped analyte sensors for apparatus classified in A61B5/145 or A61B5/157 disposable multilayered or laminated electrodes G01N27/307; details of handling chemical test elements G01N33/4875
• CPC Class Codes: A61B 5/14532 for measuring glucose, e.g. by tissue impedance measurement
• CPC Class Codes: A61B 5/14535 for measuring haematocrit
• CPC Class Codes: A61B 5/1486 using enzyme electrodes, e.g. with immobilised oxidase
• CPC Class Codes: A61B 5/150022 for capillary blood or interstitial fluid
• CPC Class Codes: A61B 5/150099 by negative pressure, other than vacuum extraction into a syringe by pulling on the piston rod or into pre-evacuated tubes
• CPC Class Codes: A61B 5/15019 Depth adjustment mechanism using movable stops located inside the piercing device housing and limiting the travel of the drive mechanism mechanisms using distal end caps A61B5/150183, mechanisms at the piercing element carrier proximal end A61B5/150198
• CPC Class Codes: A61B 5/150213 Venting means
• CPC Class Codes: A61B 5/150358 Strips for collecting blood, e.g. absorbent optical reagent test strips G01N21/8483; chemical reagent test strips G01N33/4875, G01N33/52
• CPC Class Codes: A61B 5/150412 Pointed piercing elements, e.g. needles, lancets for piercing the skin blade-like piercing elements A61B5/150442
• CPC Class Codes: A61B 5/150519 Details of construction of hub, i.e. element used to attach the single-ended needle to a piercing device or sampling device
• CPC Class Codes: A61B 5/15087 short range, e.g. between console and disposable using implanted devices A61B5/150877
• CPC Class Codes: A61B 5/15117 comprising biased elements, resilient elements or a spring, e.g. a helical spring, leaf spring, or elastic strap
• CPC Class Codes: A61B 5/1513 comprising linear sliding guides comprising tooth-shaped elements A61B5/15132
• CPC Class Codes: A61B 5/1519 comprising driving means, e.g. a spring, for propelling the piercing unit
• CPC Class Codes: A61B 5/157 Devices characterised by integrated means for measuring characteristics of blood

Abstract

A blood sensor to be used in a blood test apparatus, more specifically speaking, a blood sensor which can be easily attached to a blood test apparatus and detached therefrom. Namely, a blood sensor to be detachably attached to a blood test apparatus having a plural number of connectors, which comprises: a supply channel to which blood is supplied; a detection section provided in the supply channel; an electrode system formed in an area including the detection section; a plural number of connection terminals electrically connected to each electrode of the electrode system respectively; and a standard electrode serving as a standard for differentiating these connection terminals. The connectors are connected respectively to the connection terminals and the standard electrode of the blood sensor having been attached to a definite position of the blood test apparatus.

Claims

1. A blood sensor that is detachably attached to a blood test apparatus having a plurality of connectors, comprising:

a supply channel in which blood is supplied;

a detecting section that is provided in the supply channel;

an electrode system including a plurality of electrodes that is provided in an area including the detecting section;

a plurality of connection terminals that are electrically connected with each electrode of the electrode system; and

a reference terminal that serves as a reference for identifying each of the plurality of connection terminals, wherein

the plurality of connectors are connected to the plurality of connection terminals and the reference terminal of the blood sensor attached at a predetermined position in the blood test apparatus, respectively.

2. The blood sensor according to claim 1, wherein a resistance value between the reference terminal and one of the plurality of connection terminals is adjusted to a predetermined value.

3. The blood sensor according to claim 1, wherein the reference terminal is insulated from one of the plurality of connection terminals.

4. The blood sensor according to claim 1, wherein the reference terminal is electrically connected to one of the plurality of connection terminals via a conductor.

5. The blood sensor according to claim 1, comprising two or more reference terminals that are electrically connected with each other via a conductor and insulted from all of the plurality of connection terminals.

6. The blood sensor according to claim 1, wherein:

the plurality of connectors contact with periphery of an axis of the blood sensor attached at the predetermined position;

the blood sensor comprises an attaching guide for attaching the blood sensor to the predetermined position in the blood test apparatus; and

the attaching guide adjusts a rotation angle with respect to the axis of the attached blood sensor to a predetermined angle.

7. The blood sensor according to claim 1, wherein:

the plurality of connectors contact with periphery of an axis of the blood sensor attached at the predetermined position;

the blood sensor comprises an attaching guide for attaching the blood sensor at the predetermined position in the blood test apparatus; and

the attaching guide adjusts a rotation angle with respect to the axis of the attached blood sensor to angle other than a predetermined angle.

8. The blood sensor according to claim 1, wherein the blood sensor is a round or a polygon.

9. The blood sensor according to claim 1, further comprising:

a base plate that is a round or a polygon;

a blood storing part that is provided in the base plate having a opening;

a supply channel, one end of which communicates with the storing part, and into which blood in the storing part flows by capillary action;

a detecting section that is provided in the supply channel; and

an air hole that communicates with the supply channel.

10. The blood sensor according to claim 9, wherein a negative pressure may be supplied to the storing part through the air hole.

11. The blood sensor according to claim 1, wherein the blood sensor is integrated with a holder to configure a blood sampling cartridge.

12. The blood sensor according to claim 1, wherein the blood sensor is integrated with a holder and a lancet supported in the holder to configure a blood sampling cartridge, wherein the lancet is allowed to move freely inside the holder.

13. A blood test apparatus comprising:

a housing that comprises an opening part;

the blood sensor according to claim 1 that is attached to the opening part; and

a plurality of connectors that are connected to the blood sensor, wherein

resistance values between the reference terminal and each of the plurality of connection terminals are measured to identify the reference terminal automatically.

14. The blood test apparatus according to claim 13, further comprising a puncturing section that is provided in the housing and punctures skin through the opening part.

15. The blood test apparatus according to claim 13, further comprising:

a plunger that moves back and forth inside the housing;

a lancet, one end of which is held by the plunger; and

a puncturing needle provided at the other end of the lancet.

16. The blood test apparatus according to claim 13, wherein the lancet, the puncturing needle and the blood sensor are integrated in a holder.

17. A blood test apparatus comprising:

a housing that comprises an opening part;

the blood sensor according to claim 10 that is attached to the opening part;

a plurality of connectors that are connected to the blood sensor; and

a negative pressure section that can supply a negative pressure to the storing part through the air hole.

18. The blood test apparatus according to claim 17, wherein the negative pressure section can supply the negative pressure near a part punctured by a puncturing section.

19. The blood test apparatus according to claim 13, wherein:

an attaching part of the blood test apparatus comprises a guide for attaching the blood sensor to a predetermined position; and

the guide adjusts a rotation angle with respect to an axis of the attached blood sensor to a predetermined angle.

20. The blood test apparatus according to claim 13, wherein:

an attaching part of the blood test apparatus comprises a guide for attaching the blood sensor to a predetermined position; and

the guide adjusts a rotation angle with respect to an axis of the attached blood sensor to angles other than a predetermined angle.

21. The blood test apparatus according to claim 13, wherein electrical characteristic data for the reference terminal and each of the plurality of connection terminals of the blood sensor is reflected in internal arithmetic processing, correction, measurement order or determination.