Handheld diabetes managing device with light pipe for enhanced illumination

• US 8,431,408 B2
• Filed: 10/15/2010
• Issued: 04/30/2013
• Est. Priority Date: 10/15/2010
• Status: Active Grant

• Current Assignee: Roche Diabetes Care Inc. (Roche Holding AG)
• Original Assignee: Roche Diagnostics Operations Incorporated (Roche Holding AG)
• Inventors: Lewis, Joseph B., Ramey, Blaine Edward, DeRossi, Michael F
• Primary Examiner(s): Turk, Neil N
• Application Number:
  US12/905,508
• Publication Number:
  US 20120095316A1
• Time in Patent Office: 928 Days
• Field of Search: None
• US Class Current: 436/164
• CPC Class Codes: A61B 2560/0276 Determining malfunction
• CPC Class Codes: A61B 2560/04 Constructional details of apparatus
• CPC Class Codes: A61B 2562/0295 Strip shaped analyte sensors for apparatus classified in A61B5/145 or A61B5/157 disposable multilayered or laminated electrodes G01N27/307; details of handling chemical test elements G01N33/4875
• CPC Class Codes: A61B 5/14532 for measuring glucose, e.g. by tissue impedance measurement
• CPC Class Codes: A61B 5/742 using visual displays A61B5/339 takes precedence
• CPC Class Codes: A61B 5/7445 Display arrangements, e.g. multiple display units
• CPC Class Codes: G01N 27/3273 Devices therefor, e.g. test element readers, circuitry details not specific to biochemical electrodes G01N33/4875

Abstract

A handheld diabetes management device for providing enhanced illumination includes a housing with an access port and a light aperture. The housing further includes a coupling member on an inner surface thereof. Furthermore, the device includes a measurement engine housed within the housing and communicating with the access port for analyzing body fluid disposed on a dosing area of a diabetes test element. Also, the device includes a circuit board communicating with the measurement engine. The device further includes a light source mounted to the circuit board and a light pipe coupled to the housing via the coupling member. The light pipe is disposed adjacent the light source to receive light from the light source travelling in a first direction. The light pipe redirects the light along a second direction to be emitted out of the housing through the light aperture toward the dosing area of the diabetes test element.

Claims

1. A handheld diabetes management device for providing enhanced illumination on a dosing area of a diabetes test element, the diabetes management device comprising:

a housing including a light aperture and an access port for the diabetes test element, the light aperture formed on a sidewall of the housing, the light aperture and the access port being separated by a portion of the housing, the housing further including a coupling member on an inner surface thereof;

a measurement engine housed within the housing and communicating with the access port for analyzing a body fluid disposed on the dosing area of the diabetes test element;

a circuit board housed within the housing and communicating with the measurement engine;

a light source coupled to the housing; and

a light pipe that is coupled to the housing via the coupling member, the light pipe disposed adjacent the light source to receive light from the light source travelling in a first direction, the light pipe redirecting the light along a second direction to be emitted out of the housing through the light aperture toward the dosing area of the diabetes test element, the second direction being at a nonzero angle relative to the first direction.

2. The handheld diabetes management device of claim 1, wherein the light pipe includes a first portion and an elongate second portion, the first portion disposed adjacent the light source, and the second portion including a distal end that is adjacent the light aperture to be exposed from the housing through the light aperture.

3. The handheld diabetes management device of claim 2, wherein the first portion includes a first surface that faces the light source and a reflecting surface, the light traveling through the first portion in the first direction from the first surface to the reflecting surface and reflecting off of the reflecting surface to be redirected toward the second direction.

4. The handheld diabetes management device of claim 3, wherein the reflecting surface is substantially flat.

5. The handheld diabetes management device of claim 2, wherein the distal end is substantially flat.

6. The handheld diabetes management device of claim 5, wherein the second portion defines a second axis and the distal end defines a plane that is disposed at an acute angle relative to the second axis.

7. The handheld diabetes management device of claim 2, wherein the second portion has a substantially straight longitudinal axis.

8. The handheld diabetes management device of claim 1, wherein the second direction is disposed at approximately a ninety degree (90°

) angle relative to the first direction.

9. The handheld diabetes management device of claim 1, wherein the coupling member includes a plurality of walls that are integrally connected to the inner surface of the housing, the plurality of walls projecting from the inner surface toward the circuit board, the light pipe being mountably received between the plurality of walls.

10. The handheld diabetes management device of claim 1, wherein the light source provides a visual feedback signal relating to the analysis of the body fluid on the diabetes test element, and wherein the light pipe transmits the visual feedback signal through the light aperture.

11. The handheld diabetes management device of claim 10, wherein the visual feedback signal includes at least one of a change of color of the light and a change in illumination pattern of the light.

12. A method of providing enhanced illumination on a dosing area of a diabetes test element of a handheld diabetes management device, the method comprising:

providing the handheld diabetes management device having a housing, the housing including a light aperture and an access port for the diabetes test element, the light aperture formed on a sidewall of the housing, the light aperture and the access port being separated by a portion of the housing, the housing further including a coupling member on an inner surface thereof, the handheld diabetes management device also including a measurement engine housed within the housing and communicating with the access port for analyzing a body fluid disposed on the dosing area of the diabetes test element, the handheld diabetes management device additionally including a circuit board housed within the housing and communicating with the measurement engine, the handheld diabetes management device further including a light source, the handheld diabetes management device also including a light pipe that is coupled to the housing via the coupling member, the light pipe disposed adjacent the light source;

illuminating the light source such that the light pipe receives light from the light source travelling in a first direction; and

redirecting the light with the light pipe along a second direction to be emitted out of the housing through the light aperture toward the dosing area of the diabetes test element, the second direction being at a nonzero angle relative to the first direction.

13. The method of claim 12, further comprising providing a visual feedback signal relating to the analysis of the body fluid on the diabetes test element, and transmitting the visual feedback signal through the light aperture.

14. The method of claim 13, wherein providing the visual feedback signal includes at least one of a changing a color of the light and changing an illumination pattern of the light.

15. The method of claim 13, wherein providing the visual feedback signal includes providing the visual feedback signal relating to at least one of whether the diabetes test element is sufficient for analyzing the body fluid, whether the measurement engine successfully analyzed the body fluid, and whether a detected glucose level of the body fluid is within a satisfactory range.

16. The method of claim 12, wherein the light pipe includes a first portion and an elongate second portion, the first portion disposed adjacent the light source, and the second portion including a distal end that is adjacent the light aperture to be exposed from the housing through the light aperture, wherein the first portion includes a first surface that faces the light source and a reflecting surface, and wherein redirecting the light includes reflecting the light off of the reflecting surface to be redirected toward the second direction.

17. The method of claim 16, wherein the reflecting surface is substantially flat.

18. The method of claim 12, wherein redirecting the light with the light pipe along the second direction includes redirecting the light along a substantially straight axis.

19. The method of claim 12, wherein directing the light with the light pipe along the second direction includes redirecting the light at approximately a ninety degree (90°

) angle relative to the first direction.

20. A handheld diabetes management device for providing enhanced illumination comprising:

a housing including an access port for a diabetes test element and a light aperture, the light aperture and the access port being separated by a portion of the housing;

a measurement engine housed within the housing and communicating with the access port for analyzing a body fluid placed on a dosing area of the diabetes test element;

a circuit board with a control processor housed within the housing and operably communicating with the measurement engine;

a light source mounted inside the housing and operably communicating with the control processor to provide a visual feedback signal indicating a status of the body fluid analysis; and

a light pipe mounted inside the housing opposite to the circuit board, the light pipe including a first portion and a second elongated portion having a distal end adjacent the light aperture of the housing, the first portion having a first surface facing the light source for receiving light from the light source and a substantially flat reflecting surface at a positive angle relative to the first surface, the reflecting surface reflecting the light received from the first surface toward the second elongated portion and directing the light out of the housing via the light aperture, such that the light illuminates only a blood dosing area on the test element, the light pipe transmitting the visual feedback signal through the light aperture.