Reagents test strip with alignment notch

• US 6,821,483 B2
• Filed: 06/24/2002
• Issued: 11/23/2004
• Est. Priority Date: 08/13/1986
• Status: Expired due to Fees

• Current Assignee: Lifescan Incorporated (Duv Holding Corporation)
• Original Assignee: Lifescan Incorporated (Duv Holding Corporation)
• Inventors: Phillips, Roger, McGarraugh, Geoffery, Jurik, Franklin A., Underwood, Raymond D.
• Primary Examiner(s): GITOMER, RALPH J
• Application Number:
  US10/179,064
• Publication Number:
  US 20030073152A1
• Time in Patent Office: 883 Days
• Field of Search: 422/58, 422/55, 422/56, 422/57, 422/59, 422/60, 422/61, 435/14, 435/25, 435/28, 435/287.7, 435/805, 435/970, 436/169
• US Class Current: 422/404
• CPC Class Codes: C12Q 1/54 involving glucose or galactose
• CPC Class Codes: G01N 2021/4757 Geometry 0/45° or 45/0°
• CPC Class Codes: G01N 21/314 with comparison of measurements at specific and non-specific wavelengths dual wavelength spectrometry G01J3/427
• CPC Class Codes: G01N 21/4738 Diffuse reflection precedence is given to G01N21/55 - G01N21/57 if specular component is taken into consideration, e.g. also for testing fluids, fibrous materials
• CPC Class Codes: G01N 21/8483 Investigating reagent band test-element handling not specific to a test method G01N33/4875; analytical elements specific to chemical analysis of biological material G01N33/52; autometer with reagent band G01N35/04
• CPC Class Codes: G01N 33/52 Use of compounds or compositions for colorimetric, spectrophotometric or fluorometric investigation, e.g. use of reagent paper and including single- and multilayer analytical elements immunological elements G01N33/54386; involving labelled immunochemicals G01N33/58; for haemoglobin or occult blood G01N33/72
• CPC Class Codes: G01N 33/521 Single-layer analytical elements
• CPC Class Codes: G01N 33/523 the element being adapted for a specific analyte
• CPC Class Codes: G01N 33/66 involving blood sugars, e.g. galactose
• CPC Class Codes: G01N 35/1016 Control of the volume dispensed or introduced
• CPC Class Codes: Y02A 90/10 Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation
• CPC Class Codes: Y10S 435/805 Test papers
• CPC Class Codes: Y10S 435/808 Optical sensing apparatus
• CPC Class Codes: Y10S 435/81 Packaged device or kit
• CPC Class Codes: Y10T 436/112499 with sample on test slide
• CPC Class Codes: Y10T 436/144444 Glucose

Abstract

A reagent test strip for use in an apparatus for determining a blood glucose concentration of a sample of whole blood, the apparatus having optics for detecting intensity of light reflected from a reading surface portion of the reagent test strip. The reagent test strip includes a sample receiving surface portion for receiving an unmetered whole blood sample, a reading surface portion, other than the sample receiving surface portion, from which reflectance is read by the apparatus: and a notch for aligning the reagent test strip in the apparatus.

Claims

1. A reagent test strip for use in an apparatus for determining a blood glucose concentration of a sample of whole blood, the apparatus including optical means for detecting intensity of light reflected from a reading surface portion of the reagent test strip, the reagent test strip comprising:

a sample receiving surface portion for receiving an unmetered whole blood sample;

a reading surface portion, other than the sample receiving surface portion, from which reflectance is read by the apparatus; and

a notch for aligning the reagent test strip in the apparatus.

2. The reagent test strip of claim 1 adapted for receiving the unmetered whole blood sample while in use in the apparatus.

3. The reagent test strip of claim 2 further adapted for receiving the unmetered whole blood sample while the reading surface portion is in register with the optical means of the apparatus.

4. The reagent test strip of claim 1, wherein the reading surface portion and the sample receiving surface portion are on different surfaces of the reagent test strip.

5. The reagent test strip of claim 4, wherein at least a portion of the surface with the reading surface portion thereon is substantially reflective.

6. The reagent test strip of claim 1 adapted for allowing a portion of the unmetered whole blood sample to travel from the sample receiving surface portion to the reading surface portion.

7. The reagent test strip of claim 1 impregnated with a reagent therein that reacts with blood glucose to cause a change in the reflectance at the reading surface portion.

8. The reagent test strip of claim 1, wherein the notch is adapted for aligning the reading surface portion of the reagent test strip in register with the optical means in the apparatus.

9. A reagent test strip for use in an apparatus for determining a blood glucose concentration of a sample of whole blood, the apparatus including optical means for detecting intensity of light reflected from a reading surface portion of the reagent test strip, the reagent test strip comprising:

a sample receiving surface portion for receiving an unmetered whole blood sample;

a reading surface portion, other than the sample receiving surface portion, from which reflectance is read by the apparatus; and

a notch for aligning the reagent test strip in the apparatus;

wherein the reagent test strip is adapted for receiving the unmetered whole blood sample while in use in the apparatus.

10. A reagent test strip for use in an apparatus for determining a blood glucose concentration of a sample of whole blood, the apparatus including optical means for detecting intensity of light reflected from a reading surface portion of the reagent test strip, the reagent test strip comprising:

a reagent pad with a sample receiving surface portion for receiving an unmetered whole blood sample and a reading surface portion, other than the sample receiving surface portion, from which reflectance is read by the apparatus, the reagent pad having pores of a size sufficient to exclude red blood cells; and

a notch for aligning the reagent test strip in the apparatus.

11. A reagent test strip for use in an apparatus for determining the blood glucose concentration of a sample of whole blood, the apparatus including optical means for detecting intensity of light reflected from a reading surface portion of the reagent test strip, the reagent test strip comprising:

a reagent pad with a sample receiving surface portion for receiving an unmetered whole blood sample and a reading surface portion, other than the sample receiving surface portion, from which reflectance is read by the apparatus; and

a notch for aligning the reagent test strip in the apparatus;

wherein the reagent test strip is adapted for receiving the unmetered whole blood sample while in use in the apparatus.

12. A reagent test strip for use in an apparatus for determining an analyte concentration of a biological fluid sample, the apparatus including optical means for detecting intensity of light reflected from a reading surface portion of the reagent test strip, the reagent test strip comprising:

a sample receiving surface portion for receiving an unmetered biological fluid sample;

a reading surface portion, other than the sample receiving surface portion, from which reflectance is read by the apparatus; and

a notch for aligning the reagent test strip in the apparatus.

13. A reagent test strip for use in an apparatus for determining an analyte concentration of a biological fluid sample, the apparatus including optical means for detecting intensity of light reflected from a reading surface portion of the reagent test strip, the reagent test strip comprising:

a sample receiving surface portion for receiving an unmetered biological fluid sample;

a reading surface portion, other than the sample receiving surface portion, from which reflectance is read by the apparatus; and

a notch for aligning the reagent test strip in the apparatus;

wherein the reagent test strip is adapted for receiving the unmetered biological fluid sample while in use in the apparatus.