Analytical test strip with electroluminescent lamp

• US 20080101987A1
• Filed: 10/31/2006
• Published: 05/01/2008
• Est. Priority Date: 10/31/2006
• Status: Abandoned Application

• Current Assignee: LifeScan Scotland Limited (Johnson & Johnson)
• Original Assignee: LifeScan Scotland Limited (Johnson & Johnson)
• Inventors: Mills, Leanne, Saini, Selwayan, Blythe, Stephen Patrick, Cardosi, Marco Fabio
• Application Number:
  US11/591,367
• Publication Number:
  US 20080101987A1
• Time in Patent Office: Days
• US Class Current: 422/57
• CPC Class Codes: G01N 2021/6439 with indicators, stains, dyes, tags, labels, marks
• CPC Class Codes: G01N 21/69 specially adapted for fluids , e.g. molten metal
• CPC Class Codes: G01N 21/76 Chemiluminescence; Bioluminescence

Abstract

An analytical test strip for the determination of an analyte (such as glucose) in a bodily fluid sample (for example, a whole blood sample) includes a substrate layer, an electroluminescent lamp disposed on the substrate layer, a sample chamber configured for receiving the bodily fluid sample disposed above the substrate layer; and an enzymatic reagent disposed within the sample chamber. Moreover, the electroluminescent lamp is configured to emit light, the light being visible to a user of the analytical test strip and providing the user with spatial awareness of the analytical test strip.

Claims

1. An analytical test strip for the determination of an analyte in a bodily fluid sample, the analytical test strip comprising:

a substrate layer;

an electroluminescent lamp disposed on the substrate layer;

a sample chamber configured for receiving the bodily fluid sample disposed above the substrate layer; and

an enzymatic reagent disposed within the sample chamber,

wherein the electroluminescent lamp is configured to emit light, the light being visible to a user of the analytical test strip and providing the user with spatial awareness of the analytical test strip.

2. The analytical test strip of claim 1 wherein the electroluminescent lamp includes:

a rear electrode layer;

an electrically-insulating layer disposed over the rear electrode layer;

a phosphor layer disposed over the electrically insulating layer; and

a front electrode layer, at least a portion of which is translucent, disposed over the phosphor layer.

3. The analytical test strip of claim 2 wherein the electroluminescent lamp further includes an encapsulant layer disposed over the front electrode layer.

4. The analytical test strip of claim 1 wherein the electroluminescent lamp is configured to emit light that appears as at least one directional arrow to a user, the directional arrow indicating a bodily fluid sample application area of the analytical test strip.

5. The analytical test strip of claim 1 wherein the electroluminescent lamp is configured to emit light in a continuous band along a distal end of the analytical test strip where the bodily fluid sample is to be applied.

6. The analytical test strip of claim 1 wherein the sample chamber is a capillary sample chamber and wherein the electroluminescent lamp is configured to emit light along a periphery of the capillary sample chamber to facilitate visual determination of complete capillary sample fill by a bodily fluid sample.

7. The analytical test strip of claim 1 wherein the analytical test strip is a photometric analytical test strip.

8. The analytical test strip of claim 1 wherein the analytical test strip is an electrochemical based analytical test strip.

9. The analytical test strip of claim 1 wherein the analytical test strip is configured for the determination of glucose in a whole blood sample.

10. The analytical test strip of claim 1 wherein the electroluminescent lamp is configured to emit light of a blue-green wavelength.