CONTAINER CONTAINING REFERENCE SOLUTION

• US 20110004077A1
• Filed: 06/21/2010
• Published: 01/06/2011
• Est. Priority Date: 06/20/2009
• Status: Active Grant

• Current Assignee: Roche Diabetes Care Inc. (Roche Holding AG)
• Original Assignee: Roche Diagnostics Corporation (Roche Holding AG)
• Inventors: Ahl, Axel, Leichner, Wilhelm, Sternberger, Christa, List, Hans, Harttig, Herbert
• Granted Patent: US 9,475,050 B2
• Time in Patent Office: Days
• US Class Current: 600/309
• CPC Class Codes: B01L 2200/0684 Venting, avoiding backpressure, avoid gas bubbles
• CPC Class Codes: B01L 2200/148 Specific details about calibrations
• CPC Class Codes: B01L 2300/044 pierceable, e.g. films, membranes
• CPC Class Codes: B01L 2300/069 Absorbents; Gels to retain a fluid
• CPC Class Codes: B01L 3/523 with means for closing or opening

Abstract

The present disclosure provides a container containing reference solution for clinical chemistry, whereby the container includes a closure part-covered outlet at which reference solution can be removed by puncturing with a puncturing element. The disclosure further provides a wick that is soaked with the reference solution and arranged in the container to extend from the outlet and such that a majority of its length extends into an interior space of the container.

Claims

1. A container configured for containing reference solution for clinical chemistry, including:

an outlet for extracting reference solution by puncturing with a puncturing element of a puncturing device;

a closure part covering the outlet; and

a wick having a length, the wick being positioned in the container and extending from the outlet such that a majority of the length extends into an interior space of the container to contact reference solution contained in the interior space.

2. A container according to claim 1, wherein the container includes a container wall that surrounds the wick and carries the closure part, whereby the container wall forms a stop for engaging the puncturing device during extraction of a sample of the reference solution.

3. A container according to claim 1, wherein the container is configured to withstand a press-against force of at least 3 N when the puncturing device engages the container during extraction of the sample without reference solution being forced from the outlet.

4. A container according to claim 1, wherein the closure part is connected to the container by a pre-determined breakage zone.

5. A container according to claim 1, further including a pressure compensation channel that is closed by the closure part and extends into the interior space adjacent to the wick.

6. A container according to claim 1, wherein the wick includes a fiber bundle.

7. A container according to claim 1, wherein the wick is arranged in a channel formed by a channel wall of the container, whereby the majority of the length of the wick touches against the channel wall.

8. A container according to claim 1, wherein the closure part is removable and the wick is positioned in the container to project from the container, when the closure part is removed, by a distance that is smaller than a width of the wick.

9. A container according to claim 1, wherein the wick includes fibers that are substantially evenly distributed over a cross-section of the wick.

10. A container according to claim 1, wherein the wick immerses into the reference solution, when the outlet faces upwardly.

11. A container according to claim 1, wherein one end of the wick is positioned at the outlet.

12. A container, including:

at least one wall element defining an interior space;

a membrane that divides the interior space into a first chamber containing a reference solution for clinical chemistry and a second chamber containing air; and

an opening formed in the at least one wall element to effect pressure compensation between the second chamber and an exterior of the container.

13. A container according to claim 12, further including a body positioned in contact with the reference solution in the first chamber.

14. A container according to claim 12, wherein the container is assembled from two wall elements that are mechanically coupled to each other.

15. A container according to claim 14, wherein the two wall elements are movable relative to each other, and one of the wall elements carries a mandrel that points at the membrane.

16. A system for measuring an analyte concentration of a sample of body fluid, including:

a container; and

a measuring device including a puncturing facility for obtaining the sample;

wherein the container contains a reference solution for clinical chemistry and includes

an outlet through which the reference solution is extracted by the puncturing facility,

a closure part covering the outlet, and

a wick having a length, the wick being positioned in the container and extending from the outlet such that a majority of the length extends into an interior space of the container to contact reference solution contained in the interior space.

17. A system for measuring an analyte concentration of a sample of body fluid, including:

a container; and

a measuring device including a puncturing facility for obtaining the sample;

wherein the container contains a reference solution for clinical chemistry and includes

at least one wall element defining an interior space;

a membrane that divides the interior space into a first chamber containing the reference solution and a second chamber containing air; and

an opening formed in the at least one wall element to effect pressure compensation between the second chamber and an exterior of the container.

18. Method for taking up reference solution for clinical chemistry, including the steps of:

storing the reference solution in a container;

arranging a wick in the container to soak up the reference solution; and

puncturing into the wick with a puncturing element to take up reference solution.

19. The method of claim 18, further including the step of detaching a closure part from the container to expose the wick.

20. The method of claim 18, further including the step of attaching the container to a finger of a user.

21. The method of claim 18, further including the step of engaging a puncturing device including the puncturing element against a stop formed on the container.