Method and apparatus for lighted test strip

• US 8,465,977 B2
• Filed: 07/22/2008
• Issued: 06/18/2013
• Est. Priority Date: 07/22/2008
• Status: Active Grant

• Current Assignee: Roche Diabetes Care Inc. (Roche Holding AG)
• Original Assignee: Roche Diagnostics Operations Incorporated (Roche Holding AG)
• Inventors: Joseph, Abner David, Heald, Brian A.
• Primary Examiner(s): Alexander, Lyle
• Application Number:
  US12/177,328
• Publication Number:
  US 20100021342A1
• Time in Patent Office: 1,792 Days
• Field of Search: 422/404, 422/410, 422/82.05, 436/63, 436/69, 436/95, 436/164
• US Class Current: 436/63
• CPC Class Codes: A61B 10/0045 Devices for taking samples of body liquids devices for taking blood samples A61B5/15
• CPC Class Codes: A61B 5/1455 using optical sensors, e.g. spectral photometrical oximeters
• CPC Class Codes: C12Q 1/006 for glucose
• CPC Class Codes: F21V 33/0068 Medical equipment
• CPC Class Codes: G01N 1/10 in the liquid or fluent state burettes, pipettes B01L3/02; sampling of ground water E02D1/06; metering by volume of fluids or fluent solid material G01F11/00, G01F13/00
• 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
• CPC Class Codes: G01N 33/49 Blood chemical methods for determining blood cell populations G01N33/5094; chemical analysis of blood groups or blood types G01N33/80
• 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 33/66 involving blood sugars, e.g. galactose
• CPC Class Codes: Y10T 436/144444 Glucose

Abstract

A test strip with a sample chamber is secured to a meter. The sample chamber in the portion of the test strip that extends out of the meter is illuminated by transmitting light from a light source inside the meter internally through the test strip towards the sample chamber. By way of analogy, the test strip acts in a fashion similar to a fiber optic cable or optical wave guide by transmitting the light from the meter to the remotely located sample chamber that extends outside the meter. The user is then able to easily see the sample chamber of the test strip in dark conditions so that the user is able to readily align the sample chamber with the drop of fluid on the skin as well as view the sample chamber in order to ensure proper filling. The light also illuminates a test strip slot into which the test strip is inserted.

Claims

1. An apparatus, comprising:

a meter including a light source; and

a test strip coupled to the meter, the test strip having a sampling end with a sample chamber extending outside the meter, at least a portion of the test strip being made of a light transmissive material to transmit light from the light source to the sampling end, the test strip having an intermediate portion adjacent the sampling end, the intermediate portion including a light source opening in which the light source is received.

2. The apparatus of claim 1, further comprising:

the meter including a test strip opening in which the test strip is received; and

the light source being positioned in the meter to illuminate the test strip opening.

3. The apparatus of claim 1, further comprising:

an integrated disposable that includes the test strip and a lancet connected to the test strip;

the meter including a firing mechanism for firing the lancet into tissue; and

the light source being received in the light source opening to hold the test strip in place as the lancet is fired.

4. The apparatus of claim 1, further comprising:

the test strip including a spacer layer that at least in part defines a sample chamber; and

the spacer layer being made of the light transmissive material to transmit light from the light source to illuminate the sample chamber.

5. The apparatus of claim 4, further comprising:

the test strip including a cover layer covering the sample chamber, the cover layer being clear for visualization of the sample chamber.

6. The apparatus of claim 1, further comprising:

the sampling end of the test strip including a fluorescent material that fluoresces in presence of the light from the light source.

7. The apparatus of claim 1, further comprising:

a light source shell covering the light source.

8. The apparatus of claim 1, further comprising:

the test strip including a light source edge through which the light from the light source is transmitted to the sampling end.

9. The apparatus of claim 1, further comprising:

the light source being configured to emit different colors depending on stage of testing.

10. The apparatus of claim 1, further comprising:

wherein the light source received in the light source opening demountably retains the test strip in the meter.

11. An apparatus, comprising:

an integrated disposable including a lancet and a test strip coupled to the lancet, the test strip having a sampling end and an intermediate section adjacent the sampling end, the intermediate section including a light source opening, the test strip including a spacer layer made of light transmitting material that defines a sample chamber in the sampling end; and

a meter having a light source inserted in the light source opening of the test strip to retain the test strip during lancing, the light source being configured to illuminate the spacer layer for allowing a user to visually detect fill sufficiency of the sample chamber.

12. The apparatus of claim 11, further comprising:

the meter including a slot in which the integrated disposable is received; and

the light source being positioned to illuminate the slot.

13. A method, comprising:

loading a test strip in a meter with a sampling end of the test strip extending outside the meter, the sampling end having a sample chamber;

shining light from a light source inside the meter into a light source opening located in an intermediate section of the test strip;

illuminating the sampling end and the sample chamber of the test strip that extend outside the meter by transmitting light from the light source internally through the test strip to the sampling end of the test strip; and

retaining the test strip in the meter by inserting the light source into the light source opening in the test strip.

14. The method of claim 13, further comprising:

lighting a test strip slot in the meter with the light source; and

said loading the test strip including inserting the test strip in the test strip slot.

15. The method claim 14, further comprising:

emitting a first color from the light source during said lighting the test strip slot; and

emitting a second color that is different from the first color during said illuminating the sampling end of the test strip.

16. The method of claim 13, further comprising:

wherein the test strip includes a lancet to form an integrated disposable;

aiming the lancet by shining the light from the sampling end of the test strip onto an incision site; and

cutting an incision at the incision site by firing the lancet while the light source holds the test strip in place.

17. The method of claim 13, further comprising:

wherein the test strip has a spacer layer made of light transmissive material that at least in part defines a sample chamber at the sampling end of the test strip; and

said illuminating the sampling end of the test strip including shining the light through the spacer layer to light the sample chamber.

18. The method of claim 13, further comprising:

wherein the sampling end of the test strip includes a sample chamber;

drawing body fluid into the sample chamber; and

detecting fill sufficiency of the body fluid in the sample chamber by looking at the sample chamber illuminated by the light source.

19. The method of claim 13, further comprising:

wherein the sampling end includes fluorescent material; and

said illuminating the sampling end of the test strip including fluorescing the fluorescent material with the light from the light source.