Apparatus (cuvette) for taking up and storing liquids and for carrying out optical measurements

• US 6,214,626 B1
• Filed: 12/18/1997
• Issued: 04/10/2001
• Est. Priority Date: 12/19/1996
• Status: Expired due to Fees

• Current Assignee: Siemens Healthcare Diagnostics Products GmbH (Siemens AG)
• Original Assignee: DADE Behring Beteiligungs GmbH (Siemens AG)
• Inventors: Gross, Jürgen, Meller, Paul
• Primary Examiner(s): SNAY, JEFFREY R
• Application Number:
  US08/993,317
• Time in Patent Office: 1,209 Days
• Field of Search: 422/100, 422/102, 356/246, 738/637.1, 738/640.2, 436/164, 436/165, 436/180
• US Class Current: 436/165
• CPC Class Codes: B01L 3/0275 Interchangeable or disposable dispensing tips
• CPC Class Codes: G01N 2035/0434 in the form of a syringe or pipette tip
• CPC Class Codes: G01N 21/03 Cuvette constructions
• CPC Class Codes: G01N 21/11 Filling or emptying of cuvettes
• CPC Class Codes: Y10T 436/2575 Volumetric liquid transfer

Abstract

An apparatus which permits simultaneous use as reaction vessel for taking up one or more reaction liquids, for incubating and storing these liquids and for carrying out optical measurements is described. The apparatus performs functions of the reaction vessel and functions of the apparatus for liquid uptake. This makes it possible for analysis to be completely free of carryover while, at the same time, requiring minimal use of consumable materials or rinsing solutions.

Claims

1. An apparatus for taking up, transporting and storing a liquid and for carrying out optical measurements, comprising:

a reaction vessel having a body which enables the storage of the liquid, the body being formed by walls, at least two walls being sufficiently transparent to permit light transmission for optical testing, a base portion of the reaction vessel forming a cuvette portion;

a liquid aspirating device extending into the body of the reaction vessel to such an extent that between an upper outlet of the liquid aspiring device and a bottom of the cuvette portion a volume is defined, which is at least the volume of the liquid to be stored; and

a connecting device for connecting the reaction vessel to an exchangeable tip unit, the connecting device being located on an upper side of the reaction vessel.

2. The apparatus of claim 1, wherein the connecting device is configured for connecting to a dilutor system for feeding liquid into the cuvette portion.

3. The apparatus of claim 1, wherein the liquid aspirating device includes a tip of suitable length, edge thickness, and diameter for taking up liquids.

4. The apparatus of claim 1, wherein the connecting device is configured to be connected to a dilutor system suitable for using exchangeable tips.

5. The apparatus of claim 1, wherein the cuvette portion of the reaction vessel is configured to be processed as an exchangeable tip.

6. The apparatus of claim 1, wherein the reaction vessel with the attached liquid aspirating device is composed of at least one of different conductive or non-conducting plastic materials, composite materials, and combinations of plastic and metal.

7. The apparatus of claim 1, wherein the cuvette portion is at least partially coated with at least one conductive material.

8. The apparatus of claim 1, wherein the volume is between 50-500 μ

l.

9. The apparatus of claim 1, wherein the reaction vessel is round, angular, polygonal, or conical.

10. The apparatus of claim 8 or 9, wherein an outside surface of the reaction vessel is a smooth surface for ensuring maximum heat transfer.

11. The apparatus of claim 1, wherein the liquid aspirating device includes a tube having an overflow portion extending into the body of the reaction vessel for feeding liquid into the cuvette portion.

12. The apparatus of claim 1, wherein the liquid aspirating device includes a tube attached to a side of the body of the reaction vessel for feeding liquid into the cuvette portion.

13. The apparatus of claim 1, 11, or 12, wherein the liquid aspirating device comprises plastic or metal.

14. The apparatus of claim 1, 11, or 12, wherein the liquid aspirating device comprises conductive plastic or non-conductive plastic.

15. The apparatus of claim 13, wherein the reaction vessel with the attached liquid aspirating device is composed of at least one of different conductive or non-conducting plastic materials, composite materials, and combinations of plastic and metal.

16. The apparatus of claim 15, wherein the cuvette portion is at least partially coated with at least one conductive material.

17. The apparatus of claim 14, wherein the reaction vessel with the attached liquid aspirating device is composed of at least one of different conductive or non-conducting plastic materials, composite materials, and combinations of plastic and metal.

18. The apparatus of claim 17, wherein the cuvette portion is at least partially coated with at least one conductive material.

19. A method of taking up, transporting and storing a liquid and for carrying out optical measurements, comprising:

providing an apparatus as claimed in claim 11;

taking up at least one reagent component into the cuvette portion of the reaction vessel by a liquid aspirating device of the apparatus;

providing a sample to be analyzed to the cuvette portion; and

performing optical measurements on the sample.

20. The method of claim 19, further including washing the liquid aspirating device following taking up the at least one reagent component.

21. The method of claim 20, wherein the taking up at least one reagent component includes taking up a second reagent component subsequent to washing the liquid aspirating device.