Test strip card

• US 8,003,061 B2
• Filed: 05/06/2004
• Issued: 08/23/2011
• Est. Priority Date: 05/06/2004
• Status: Active Grant

• Current Assignee: Akers Biosciences, Inc.
• Original Assignee: Akers Biosciences, Inc.
• Inventors: Andrelczyk, Susan, Schluter, Leonard L.
• Primary Examiner(s): Bullock; In Suk
• Assistant Examiner(s): HYUN, PAUL SANG HWA
• Application Number:
  US10/842,000
• Publication Number:
  US 20050250218A1
• Time in Patent Office: 2,665 Days
• Field of Search: 435/4, 422/82.05, 422/55, 422/56, 422/68.1, 422/409, 422/419, 422/420, 422/425, 436/165, 436/169
• US Class Current: 422/419
• CPC Class Codes: B01L 2300/028 Graduation
• CPC Class Codes: B01L 2300/0825 Test strips
• CPC Class Codes: B01L 3/5023 with a sample being transported to, and subsequently stored in an absorbent for analysis
• CPC Class Codes: G01N 21/78 producing a change of colour
• CPC Class Codes: G01N 31/22 using chemical indicators G01N31/02 takes precedence

Abstract

The present invention relates to a test strip for determining and/or quantifying a property of a sample, such as the concentration of an analyte, the pH, the viscosity, or the specific gravity of a fluid specimen. More particularly, the present invention relates to an improved test strip and scale for determining and/or quantifying a property of a sample, such as the concentration of an analyte, the pH, the viscosity, or the specific gravity of a fluid specimen.

Claims

1. A test strip card for testing a property of a fluid specimen, said test strip card comprising:

a test strip comprising;

(a) a front side comprising a reaction zone which is part of a reagent pad,

(b) a back side comprising a sample pad, wherein a sample is administered to the sample pad, and

(c) a zone that is not part of the reaction zone, the test strip being movably coupled to said test strip card for performing a reaction on the reaction zone on the reagent pad of the test strip; and

a test scale card, comprising;

a front wall, comprising;

a comparison scale that comprises a continuous scale of visual levels, and

a window along said comparison scale for viewing (a) the reaction zone of the test strip and (b) at least a portion of the zone of the test strip that is not part of the reaction zone,

a back wall, and

a pocket between said front wall and said back wall, the test strip movably located within said pocket in said test scale card with the front side adjacent the front wall and the back side adjacent the back wall,

wherein said test strip is adjacent and movable with respect to said comparison scale to align said reaction zone with a matching visual level on said comparison scale thereby indicating the property of the specimen.

2. The test strip card of claim 1, wherein:

said window is formed in said front wall along said comparison scale; and

said reaction zone on said test strip is visible through said window along said comparison scale.

3. The test strip card of claim 2, further comprising a transparent material fitted in said window through which said reaction zone is visible.

4. The test strip card of claim 1, wherein said test strip has a pull end extending beyond the borders of said front wall and said back wall.

5. The test strip card of claim 1, wherein:

a notch is defined at an end of at least one of said front wall and said back wall; and

said test strip has a pull end accessible through said notch.

6. The test strip card of claim 1, wherein

an access window is formed in said back wall of said test scale card through which a specimen may be applied to said sample pad on said test strip.

7. The test strip card of claim 1, wherein said continuous scale comprises a spectrum or series of visual levels selected from the group consisting of colors, hues, shades, and tints.

8. The test strip card of claim 7, further comprising a reading scale aligned with said comparison scale and including a series of numerical values that are matched with the different visual levels of said comparison scale.

9. The test strip card of claim 1, wherein said property is the concentration of an analyte.

10. The test strip card of claim 9, wherein the analyte reacts with or binds to a reagent in the reaction zone, and wherein the binding or reaction between the analyte and the reagent results in a change of the optical properties of said reaction zone.

11. The test strip card of claim 1, wherein the property is the viscosity or the pH of the liquid specimen.