LIGHT SWITCHING INDICATORS BY WAVELENGTH FILTRATION

• US 20170205553A1
• Filed: 07/20/2015
• Published: 07/20/2017
• Est. Priority Date: 07/23/2014
• Status: Active Application

• Current Assignee: Ascensia Diabetes Care Holdings AG (PHC Holdings Corporation)
• Original Assignee: Ascensia Diabetes Care Holdings AG (PHC Holdings Corporation)
• Inventors: Prais, Eugene Randal
• Granted Patent: US 10,267,679 B2
• Time in Patent Office: Days
• CPC Class Codes: A61B 5/150022 for capillary blood or interstitial fluid
• CPC Class Codes: A61B 5/150824 by visual feedback
• CPC Class Codes: A61B 5/15087 short range, e.g. between console and disposable using implanted devices A61B5/150877
• CPC Class Codes: A61B 5/157 Devices characterised by integrated means for measuring characteristics of blood
• CPC Class Codes: G01J 3/26 using multiple reflection, e.g. Fabry-Perot interferometer, variable interference filters
• CPC Class Codes: G01J 3/28 Investigating the spectrum using colour filters G01J3/51
• CPC Class Codes: G01N 21/25 Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
• CPC Class Codes: G01N 21/255 Details, e.g. use of specially adapted sources, lighting or optical systems
• 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: G02B 6/0008 the light being emitted at the end of the fibre
• CPC Class Codes: G02B 6/0028 Light guide, e.g. taper

Abstract

A testing system configured to determine an analyte concentration has a user interface that includes a number of visual indicators on its exterior housing. The visual indicators convey different types of information to a user of the testing system when illuminated. Additionally, the indicators are independent of one another in that they can each be illuminated in different colors from one other and turn on and/or off independently of one another. Further, the visual indicators are illuminated using a common lighting element (e.g., a single light emitting diode (“LED”)) in combination with one or more waveguides and one or more filters located inside the testing system.

Claims

1. A testing system adapted to determine a concentration of an analyte, the testing system comprising:

a user interface including a plurality of visual indicators;

a lighting element operative to emit light of a plurality of wavelengths corresponding to a plurality of colors;

a light guide coupled to the lighting element and configured to transmit light emitted by the lighting element;

a first filter coupled to a first one of the plurality of visual indicators, the first filter configured to filter light of a first wavelength being transmitted by the light guide; and

a second filter coupled to a second one of the plurality of visual indicators, the second filter configured to filter light of the first wavelength being transmitted by the light guide.

2. The testing system of claim 1, wherein the first filter is configured to transmit light of the first wavelength and the second filter is configured to attenuate light of the first wavelength.

3. The testing system of claim 1, wherein the lighting element comprises a plurality of light-emitting diodes.

4. The testing system of claim 1, wherein the lighting element consists of a single light-emitting diode.

5. The testing system of claim 1, wherein a second one of the plurality of visual indicators is coupled to a sensor port housing.

6. The testing system of claim 5, further configured to display a first color corresponding to the light of the first wavelength via the first one of the plurality of visual indicators and to display a second color corresponding to a light of a second wavelength via the second one of the plurality of visual indicators simultaneously.

7. The testing system of claim 6, wherein the light of the first wavelength is transmitted to the second one of the plurality of visual indicators via the first light guide.

8. The testing system of claim 1, further comprising:

a third filter coupled to a third one of the plurality of visual indicators, the third filter configured to transmit light of a second wavelength being transmitted by the light guide.

9. The testing system of claim 1, wherein at least one of the plurality of visual indicators displays information relating to an analyte.

10. The testing system of claim 1, wherein each of the plurality of visual indicators displays independent color display behavior.

11. The testing system of claim 1, wherein at least one of the first filter and the second filter has a thickness of less than 0.05 mm.

12. The testing system of claim 1, wherein at least one of the first filter and the second filter is a shortpass filter.

13. The testing system of claim 1, wherein at least one of the first filter and the second filter is a longpass filter.

14. The testing system of claim 1, wherein at least one of the first filter and the second filter is a bandpass filter.

15. A testing system adapted to determine a concentration of an analyte, the testing system comprising:

a user interface including a plurality of visual indicators;

a lighting element operative to emit light of a plurality of wavelengths corresponding to a plurality of colors;

a first light guide coupled to the lighting element and configured to transmit light emitted by the lighting element to a first one of the plurality of visual indicators;

a second light guide coupled to the first light guide and configured to transmit light emitted by the lighting element to a second one of the plurality of visual indicators; and

a first filter coupled to the second light guide, the first filter configured to filter light of a first wavelength being transmitted by the light guide such that the light of the first wavelength is attenuated and to filter light of a second wavelength being transmitted by the light guide such that the light of the second wavelength is transmitted.

16. The testing system of claim 15, wherein at least one of the plurality of visual indicators is configured to convey information about the concentration of the analyte.

17. The testing system of claim 15, wherein at least one of the plurality of visual indicators is configured to convey information about operation of the testing system.

18. The testing system of claim 17, wherein the at least one of the plurality of visual indicators is configured to convey information about wireless communications on the testing system.

19. The testing system of claim 15, wherein at least one of the plurality of visual indicators is configured to convey an alarm condition.

20. A method of illuminating a visual indicator on a testing device, comprising:

illuminating a lighting element located inside the testing device;

transmitting light along an interior portion of the testing device via a first waveguide;

filtering a first portion of the light transmitted along the interior portion of the testing device at a first location using a first filter such that the first portion of the light is prevented from being transmitted along a second waveguide coupled to the first location; and

filtering a second portion of the light transmitted along the interior portion of the testing device using a second filter at a second location such that the second portion of light is transmitted along a second waveguide coupled to the second location.