Medical system comprising a compact barcode reader for consumable items

• US 9,282,922 B2
• Filed: 02/04/2011
• Issued: 03/15/2016
• Est. Priority Date: 08/06/2008
• Status: Active Grant

• Current Assignee: Roche Diabetes Care Inc. (Roche Holding AG)
• Original Assignee: Roche Diabetes Care Inc. (Roche Holding AG)
• Inventors: Haar, Hans-Peter, Kocherscheidt, Gerrit
• Primary Examiner(s): WALSH, DANIEL I
• Application Number:
  US13/021,382
• Publication Number:
  US 20120043377A1
• Time in Patent Office: 1,866 Days
• US Class Current: 1/1
• 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 2562/08 Sensors provided with means for identification, e.g. barcodes or memory chips
• CPC Class Codes: A61B 5/14532 for measuring glucose, e.g. by tissue impedance measurement
• CPC Class Codes: A61B 5/14546 for measuring analytes not otherwise provided for, e.g. ions, cytochromes
• CPC Class Codes: A61B 5/1455 using optical sensors, e.g. spectral photometrical oximeters
• CPC Class Codes: A61B 90/90 Identification means for patients or instruments, e.g. tags
• CPC Class Codes: A61B 90/94 coded with symbols, e.g. text
• CPC Class Codes: A61B 90/96 using barcodes
• CPC Class Codes: A61B 90/98 using electromagnetic means, e.g. transponders

Abstract

A medical system is proposed comprising at least one medical device for carrying out at least one medical function, and at least one medical consumable item interacting with the medical device in order to carry out the medical function. The medical device has at least one code reader for reading out at least one information component of an optical code on the medical consumable item. The code reader has at least one image sensor having a plurality of sensors. Furthermore, the code reader comprises at least one light-optical fiber plate, which is arranged in order to guide an image of the optical code to the image sensor.

Claims

1. A medical system comprising:

at least one handheld medical device configured to perform at least one medical function; and

at least one medical consumable item having at least one two-dimensional optical code provided thereon,

wherein the medical device is configured to interact with the medical consumable item to perform the medical function, the medical device comprising;

at least one code reader configured to read at least one information component from the optical code of the medical consumable item when the medical consumable item is in a read position relative to the medical device, the code reader comprising;

at least one image sensor having a plurality of sensors,

at least one planar light-optical fiber plate having first and second planes,

the plate being generally configured to transport light from the first plane to the second plane, the plate further being generally configured to guide an image of the optical code to the image sensor without appreciably altering the image during transport, the optical code comprising a plurality of optically readable modules each comprising a smallest information unit,

wherein the light-optical fiber plate comprises a plurality of substantially parallel oriented optical fibers arranged perpendicular to the first plane and the second plane, and

at least one illumination device configured to illuminate the optical code on a side of the optical code generally facing the image sensor,

wherein the medical consumable item and the medical device being positioned relative to each other in the read position such that a first distance between the plate at the first plane and the optical code is less than a second distance between the midpoints of adjacent modules of the optical code,

wherein the illumination device comprises at least one light source and is configured to illuminate the optical code on one side, from the same side on which the image sensor also is provided, in one or more of the manners of (a) through the plate, (b) from a side of the optical code substantially perpendicular to a viewing direction of the plate through a carrier material of the medical consumable item, and (c) through the image sensor onto the medical consumable item in a region of the optical code, and

wherein the medical function is performed on a patient sample or influences a patient body state.

2. The medical system of claim 1, wherein the plurality of optical fibers have a diameter of less than 100 micrometers.

3. The medical system of claim 1, wherein the illumination device comprises at least one light source which is configured to trans-illuminate the medical consumable item in the region of the optical code.

4. The medical system of claim 1, wherein the illumination device is configured to illuminate the medical consumable item sequentially with light having different wavelengths.

5. The medical system of claim 1, wherein the code reader is configured to record the image of the optical code in a time-delayed manner with respect to an illumination by the illumination device.

6. The medical system of claim 1, wherein the medical device comprises at least one of the following devices:

an analysis device for detecting at least one metabolite in the body fluid, wherein the analysis device is designed to interact with the medical consumable item in the form of at least one test element for detecting the metabolite;

a metering device comprising an insulin pump, wherein the metering device is designed to interact with the consumable item in the form of a catheter and/or a cannula, wherein the information comprises information about a filling volume of the catheter and/or of the cannula.

7. The medical system of claim 1, wherein the image sensor has at least two regions having a differing spectral sensitivity.

8. The medical system of claim 1, furthermore comprising a positioning device, which is designed to position the medical device and the consumable item relative to one another.

9. The medical system of claim 1, wherein the light-optical fiber plate is dimensioned in such a way that at least three optical fibers are provided per dimension of the optical code per optically readable module.

10. The medical system of claim 1, wherein the medical consumable item comprises a carrier material in the region of the optical code, wherein the carrier material comprises a transparent plastic having transparent or light-scattering properties.

11. The medical system of claim 10, wherein the carrier material comprises a transparent polyester.

12. The medical system of claim 10, wherein the transparent plastic is doped with TiO₂ in such a way that a substantially white overall impression of the carrier material arises, wherein the carrier material has diffusely light-conducting properties.

13. The medical system of claim 1, wherein the optical code is designed to interact differently with light having different wavelengths.

14. The medical system of claim 1, wherein the optical code has at least partly luminescent properties, and further wherein the modules of the optical code comprise at least one light converter configured to convert an excitation light into a light having a different wavelength than the excitation light.

15. The medical system of claim 14, wherein the at least one light converter comprises a phosphor.

16. The medical system of claim 14, wherein the at least one light converter converts the excitation light into a light having a longer wavelength than the excitation light.

17. The medical system of claim 1, wherein the medical consumable item comprises a carrier having a carrier material in the region of the optical code, wherein the carrier furthermore comprises at least one light converter, wherein the light converter is designed to convert an excitation light into a light having a different wavelength than the excitation light.

18. The medical system of claim 1, wherein the image sensor and the light-optical fiber plate form one unit having a joint thickness of less than 5 mm.

19. The medical system of claim 1, wherein the image sensor does not include lens systems.