Cuvette system

• US 9,279,761 B1
• Filed: 02/06/2015
• Issued: 03/08/2016
• Est. Priority Date: 02/06/2015
• Status: Active Grant

• Current Assignee: John L. Sternick
• Original Assignee: John L. Sternick
• Inventors: Sternick, John L.
• Primary Examiner(s): Nguyen, Sang
• Application Number:
  US14/615,544
• Time in Patent Office: 396 Days
• Field of Search: 356/244, 356/246, 250/576, 422/102, 422/104, 422/82.09, 422/547, 422/561, 422/562
• US Class Current: 1/1
• CPC Class Codes: G01N 2021/0307 Insert part in cell
• CPC Class Codes: G01N 2021/0321 One time use cells, e.g. integrally moulded
• CPC Class Codes: G01N 2021/0375 Slidable cells
• CPC Class Codes: G01N 21/03 Cuvette constructions

Abstract

A cuvette system may comprise a disposable cuvette element for holding a sample for analysis, with the cuvette element comprising an elongated strip having opposite faces and a well for receiving the sample to be analyzed. The well may be formed on the strip to hold a sample on the strip, and a hole may form at least a portion of the well and may extend through the strip. The well may be configured to hold a defined volume of the sample to be held therein. The system may comprise a reusable holder for removably receiving the cuvette element, with the holder having a substantially hollow interior for receiving at least a portion of the cuvette element. The holder may have a perimeter wall including a front wall and a rear wall of the holder, and a window may be formed in each of the front and rear walls and may be generally positioned in alignment with each other. The windows may be alignable with the well in the cuvette element when the cuvette element is inserted into the holder such that a straight line passes through the windows and the well simultaneously.

Claims

1. A cuvette system comprising:

a disposable cuvette element for holding a sample for analysis, the cuvette element comprising an elongated strip having opposite faces; and

a well for receiving the sample to be analyzed, the well being formed on the strip to hold a defined volume of a sample on the strip, a hole forming at least a portion of the well and extending through the strip; and

a reusable holder for removably receiving the cuvette element, the holder having a substantially hollow interior for receiving at least a portion of the cuvette element, the holder having a perimeter wall including a front wall and a rear wall of the holder, the front and rear walls each having a window formed by a void in each of the front and rear walls the windows being generally positioned in alignment with each other;

wherein the cuvette element and the holder are configured such that positioning of the cuvette element in the holder aligns the windows of the front and rear walls of the holder and the hole of the well in the cuvette element to produce a linear path for a beam of energy through the assembled cuvette element and holder that does not pass through material forming the cuvette element and does not pass through material forming the holder.

2. The system of claim 1 wherein the well is formed by a continuous wall surrounding the hole.

3. The system of claim 2 wherein the wall extends from at least one side of the strip.

4. The system of claim 2 wherein the wall is substantially cylindrical in shape.

5. The system of claim 2 wherein the wall is substantially rectangular in shape.

6. The system of claim 1 wherein the cuvette element comprising at least one rail formed on at least one of the opposite faces and protruding from said face.

7. The system of claim 6 wherein a pair of the rails are formed on one of said faces, the rails each being positioned along at least a section of opposite side edge portions of the strip.

8. The system of claim 7 wherein the rails are substantially linear.

9. The system of claim 1 wherein the cuvette element comprising a marking on the strip indicative of a volume of the well.

10. The system of claim 1 wherein the faces of the strip define a thickness therebetween, the strip having a substantially uniform thickness.

11. The system of claim 1 wherein at least one guide is formed in the interior of the holder for removably receiving a portion of the strip to guide movement of the strip in the interior of the holder.

12. The system of claim 11 wherein the at least one guide comprises opposing sets of guides that define opposing channels that receive opposite side edge portions of the strip of the cuvette element when the element is inserted into the interior of the holder.

13. The system of claim 12 wherein the channels are configured to hold the cuvette element in a position spaced from the front and rear walls.

14. The system of claim 1 wherein the holder has an open top end for receiving the cuvette element therethrough.

15. The system of claim 14 wherein the holder has a substantially closed bottom end.

16. The system of claim 1 wherein the perimeter wall includes opposite side walls extending between the front and rear walls.

17. The system of claim 1 wherein an exterior surface of the holder has a cuboid shape.

18. The system of claim 1 additionally comprising at least one filter strip configured to filter a beam of energy passing through the filter strip;

and

wherein the holder defines a plurality of positions in the interior of the holder for receiving the at least one filter strip adjacent to the strip of the cuvette element such that a beam of energy on the linear path for through the assembled cuvette element and holder also passes through the at least one filter strip.

19. The system of claim 1 wherein the well is formed by a continuous wall surrounding the hole, the wall extending from at least one side of the strip;

wherein a pair of rails are formed on one of said faces, the rails each being positioned along at least a section of opposite side edge portions of the strip, the rails being substantially linear;

wherein the faces of the strip define a thickness therebetween, the strip having a substantially uniform thickness;

wherein opposing sets of guides are formed in the interior of the holder for removably receiving a portion of the strip to guide movement of the strip in the interior of the holder, the sets of guides defining opposing channels to receive opposite side edge portions of the strip of the cuvette element when the element is inserted into the interior of the holder, the channels being configured to hold the cuvette element in a position spaced from the front and rear walls; and

wherein the holder has an open top end for receiving the cuvette element therethrough and a substantially closed bottom end.