Blood glucose test strip illumination device and method

• US 8,894,262 B2
• Filed: 03/11/2013
• Issued: 11/25/2014
• Est. Priority Date: 03/11/2013
• Status: Active Grant

• Current Assignee: Roche Diabetes Care Inc. (Roche Holding AG)
• Original Assignee: Roche Diagnostics Operations Incorporated (Roche Holding AG)
• Inventors: Celentano, Michael J., Sauers, Matthew C., Uberta, Anthony J. III, Yesmunt, Garrett S.
• Primary Examiner(s): Husar, Stephen F
• Application Number:
  US13/793,406
• Publication Number:
  US 20140254170A1
• Time in Patent Office: 624 Days
• Field of Search: 362/23.09, 362/23.16, 362/572, 362/602
• US Class Current: 362/572
• CPC Class Codes: A61B 2560/0431 Portable apparatus, e.g. comprising a handle or case
• CPC Class Codes: A61B 5/14532 for measuring glucose, e.g. by tissue impedance measurement
• CPC Class Codes: A61B 5/1455 using optical sensors, e.g. spectral photometrical oximeters
• CPC Class Codes: A61B 5/150358 Strips for collecting blood, e.g. absorbent optical reagent test strips G01N21/8483; chemical reagent test strips G01N33/4875, G01N33/52
• CPC Class Codes: F21V 33/0068 Medical equipment
• CPC Class Codes: G01N 33/4875 Details of handling test elements, e.g. dispensing or storage, not specific to a particular test method test-elements per se B01L, automatic analysers G01N35/00, in-vivo analysis on the human body for medical diagnosis A61B
• CPC Class Codes: G01N 33/48785 Electrical and electronic details of measuring devices for physical analysis of liquid biological material not specific to a particular test method, e.g. user interface or power supply

Abstract

A handheld test strip illumination device includes a housing. A strip connector positioned within the housing receives a first portion of a test strip in a test strip test position. A light source is positioned within the housing. A lens/light reflecting device is aligned to receive photons emitted from the light source and direct the photons onto the first portion of the test strip within the strip connector. The first portion of the test strip within the strip connector includes a longitudinal transparent layer receiving the photons emitted from the lens/light reflecting device within the housing. The photons pass through the longitudinal transparent layer and are emitted from the longitudinal transparent layer in a second portion of the test strip positioned outside of the housing, thereby illuminating a dose area of the test strip.

Claims

1. A handheld test strip illumination device, comprising:

a housing having a strip connector within the housing receiving a first portion of a test strip in a test position;

a printed circuit board positioned within the housing and having an aperture;

a light source positioned within the housing; and

a lens/light reflecting device having a first light reflecting device portion and a second light reflecting device portion, the second light reflecting device portion extending through the aperture in the printed circuit board, the lens/light reflecting device aligned to receive photons emitted from the light source and direct the photons onto the first portion of the test strip within the strip connector.

2. The handheld test strip illumination device of claim 1, further including a strip connector positioned within the housing receiving the first portion of the test strip in the test position, wherein the first portion of the test strip within the strip connector includes a longitudinal transparent layer, the longitudinal transparent layer including an end face receiving the photons emitted from the light source at an angle of incidence allowing the photons to pass entirely through the longitudinal transparent layer to be emitted from the longitudinal transparent layer in a second portion of the test strip positioned outside of the housing.

3. The handheld test strip illumination device of claim 2, wherein the angle of incidence is within an angular range greater than or equal to approximately 45 degrees and less than or equal to 90 degrees determined with respect to a direction normal to the longitudinal transparent layer.

4. The handheld test strip illumination device of claim 2, wherein the strip connector includes a strip connector aperture aligned with the aperture of the printed circuit board, the second light reflecting device portion extending through both the aperture in the printed circuit board and the strip connector aperture.

5. The handheld test strip illumination device of claim 1, wherein the second light reflecting device portion of the lens/light reflecting device includes a curved lens acting to direct the photons into an angular range greater than or equal to approximately 45 degrees determined with respect to a direction normal to a longitudinal transparent layer of the test strip, the curved lens defining a convex curve facing the test strip.

6. The handheld test strip illumination device of claim 1, wherein the lens/light reflecting device includes a lens and first, second and third reflective faces, the first, second and third reflective faces individually acting to direct the photons emitted by the light source through the lens at the first portion of the test strip.

7. The handheld test strip illumination device of claim 6, wherein the first light reflecting device portion of the lens/light reflecting device includes opposed, planar first and second surfaces reflecting the photons toward one of the first, second or third reflective faces.

8. The handheld test strip illumination device of claim 1, wherein the light source is connected to a first circuit board portion of the printed circuit board proximate to the first light reflecting device portion.

9. The handheld test strip illumination device of claim 1, wherein:

the first light reflecting device portion is partially supported on a first circuit board portion of the printed circuit board; and

the lens/light reflecting device further includes an extending arm directly abutting an inner wall of the first strip connector portion within the aperture.

10. A handheld test strip illumination device, comprising:

a housing;

a strip connector positioned within the housing receiving a first portion of a test strip in a test strip test position;

a printed circuit board positioned proximate to the strip connector within the housing, the printed circuit board having an aperture;

a light source positioned within the housing; and

a light reflecting device extending through the aperture in the printed circuit board, the light reflecting device aligned to receive photons emitted from the light source and direct the photons onto the first portion of the test strip within the strip connector.

11. The handheld test strip illumination device of claim 10, wherein the light reflecting device comprises a lens/light reflecting device having a first light reflecting device portion and a second light reflecting device portion defining a monolithic device, the second light reflecting device portion extending through the aperture in the printed circuit board.

12. The handheld test strip illumination device of claim 11, wherein the first light reflecting device portion is supported on the printed circuit board.

13. The handheld test strip illumination device of claim 10, wherein the first portion of the test strip within the strip connector includes:

a longitudinal transparent layer receiving the photons emitted from the light source within the housing, the photons passing through the longitudinal transparent layer to be emitted from the longitudinal transparent layer in a second portion of the test strip positioned outside of the housing; and

an end face receiving the photons emitted from the light source at an angle of incidence allowing the photons to pass through the longitudinal transparent layer.

14. The handheld test strip illumination device of claim 13, wherein the housing includes a strip port slidably receiving the test strip, the photons being also emitted from within the housing outward through the strip port, the photons thereby illuminating an area proximate to the strip port outside of the housing.

15. The handheld test strip illumination device of claim 11, wherein the strip connector includes a strip connector aperture aligned with the aperture of the printed circuit board such that the light reflecting device extends through both the aperture in the printed circuit board and the strip connector aperture.

16. A handheld test strip illumination device, comprising:

a housing;

a strip connector positioned within the housing receiving a first portion of a test strip in a test strip test position;

a light source positioned within the housing;

a lens/light reflecting device aligned to receive photons emitted from the light source and direct the photons onto the first portion of the test strip within the strip connector; and

the first portion of the test strip within the strip connector including a longitudinal transparent layer receiving the photons emitted from the lens/light reflecting device within the housing, the photons passing through the longitudinal transparent layer to be emitted from the longitudinal transparent layer in a second portion of the test strip positioned outside of the housing.

17. The handheld test strip illumination device of claim 16, further including a printed circuit board positioned proximate to the strip connector within the housing, the printed circuit board having an aperture, the lens/light reflecting device extending through the aperture in the printed circuit board.

18. The handheld test strip illumination device of claim 17, wherein the lens/light reflecting device includes a first light reflecting device portion and a second light reflecting device portion, the second light reflecting device portion extending through the aperture in the printed circuit board.

19. The handheld test strip illumination device of claim 18, wherein the strip connector includes a strip connector aperture aligned with the aperture of the printed circuit board, the second light reflecting device portion extending through both the aperture in the printed circuit board and the strip connector aperture.

20. The handheld test strip illumination device of claim 17, wherein the strip connector includes a strip connector aperture aligned with the aperture of the printed circuit board, the lens/light reflecting device further extending through the strip connector aperture.

21. The handheld test strip illumination device of claim 16, wherein:

the lens/light reflecting device includes a lens and at least first and second reflective faces, the first and second reflective faces individually acting to direct the photons emitted by the light source through the lens at the first portion of the test strip; and

the first light reflecting device portion of the lens/light reflecting device includes opposed, planar first and second surfaces reflecting the photons toward one of the first and second reflective faces.

22. The handheld test strip illumination device of claim 16, wherein:

the lens/light reflecting device includes a lens and first, second and third reflective faces, the first, second and third reflective faces individually acting to direct the photons emitted by the light source through the lens at the first portion of the test strip; and

the first light reflecting device portion of the lens/light reflecting device includes opposed, planar first and second surfaces reflecting the photons toward one of the first, second or third reflective faces.

23. The handheld test strip illumination device of claim 16, wherein:

the longitudinal transparent layer includes an end face receiving the photons emitted from the light source at an angle of incidence allowing the photons to pass through the longitudinal transparent layer;

the lens/light reflecting device includes a lens, the lens acting to direct the photons toward the end face in the test strip test position; and

the lens defines a convex compound curve shape.

24. The handheld test strip illumination device of claim 16, wherein the second portion of the test strip positioned outside of the housing is illuminated by the photons passing through the longitudinal transparent layer.