Test device for determining an analyte concentration

• US 8,283,175 B2
• Filed: 12/21/2007
• Issued: 10/09/2012
• Est. Priority Date: 06/22/2005
• Status: Active Grant

• Current Assignee: Roche Diabetes Care Inc. (Roche Holding AG)
• Original Assignee: Roche Diagnostics Operations Incorporated (Roche Holding AG)
• Inventors: Bainczyk, Gregor, Eisele, Thomas, Wieder, Herbert
• Primary Examiner(s): Alexander, Lyle
• Application Number:
  US11/963,155
• Publication Number:
  US 20090098018A1
• Time in Patent Office: 1,754 Days
• Field of Search: 436/45, 436/46, 436/43, 436/95, 422/63, 422/64, 422/68.1, 422/82.01
• US Class Current: 436/46
• CPC Class Codes: G01N 33/48757 Test elements dispensed from a stack
• CPC Class Codes: Y10T 436/11 Automated chemical analysis
• CPC Class Codes: Y10T 436/111666 Utilizing a centrifuge or compartmented rotor
• CPC Class Codes: Y10T 436/112499 with sample on test slide
• CPC Class Codes: Y10T 436/144444 Glucose

Abstract

A test device for determining the concentration of at least one analyte in a sample using a element is proposed. The test device can be used particularly for glucose measurement, in particular blood glucose measurement, cholesterol measurement and/or coagulation measurement. The test device according to the invention comprises a housing with a closed state and an opened state, and a storage device for receiving at least one test element. The at least one test element is typically designed as a strip-shaped test element, and the storage device typically comprises a magazine. The magazine comprises a plurality of cavities, and the test elements are received substantially parallel to one another in the cavities. A measuring device and a dispensing device are also provided. The dispensing device comprises means for conveying the at least one test element from at least one storage position of the storage device during opening of the housing.

Claims

1. A test device for determining the concentration of at least one analyte in a sample, the device comprising:

a housing having a closed state and an opened state;

a storage device removably received within the housing, the storage device comprising a magazine having plurality of cavities, each cavity configured for receiving a substantially flat test strip in a storage position and in a substantially parallel orientation to test strips in a storage position in other cavities of the storage device;

a dispensing device configured to engage a test strip received within the storage device and to convey the test strip from the storage position to a measurement position during opening of the housing, the opening being effected when the housing is moved from the closed state to the opened state; and

a measuring device provided within the housing and configured to determine the concentration of the at least one analyte concentration in a sample when the sample is applied to a test strip which is moved to the measurement position, the measuring device operatively engaging the test strip when the test strip is conveyed to the measurement position.

2. The test device of claim 1, wherein the housing is configured to be in a folded configuration when in a closed state, the opening of the housing being effected when the housing is unfolded into an opened state.

3. The test device of claim 1, wherein the dispensing device comprises a rotation axle for effecting a rotational movement of the test strip from the storage position to the measurement position when the dispensing device engages the test strip within the storage device.

4. The test device of claim 1, wherein the storage device comprises at least one membrane covering at least one cavity of the storage device and configured to protect the test strip within the cavity from air, moisture and dirt, the membrane being perforatable by the test strip when the strip is conveyed from the storage position to the measurement position.

5. The test device of claim 1, wherein the storage device further comprises a desiccant configured to reduce moisture within the cavities of the storage device.

6. The test device of claim 5, wherein the desiccant is provided at or in one or more of the group consisting of at least one of the cavities, at least one test strip, and the magazine.

7. The test device of claim 1, wherein at least one measurement position has contacts for contacting the at least one test element.

8. The test device of claim 1, wherein the dispensing device is further configured to return a test strip from the measurement position to the storage position during re-closure of the housing.

9. The test device of claim 1, further comprising a selector device configured to locate the dispenser device in a position relative to the storage device in order to select an unused test strip for conveyance from its storage position to its measurement position upon the opening of the housing.

10. The test device of claim 1, further comprising a decoupling mechanism, said decoupling mechanism configured to be activated to prevent the dispensing device from conveying a test strip from to a measurement position during opening of the housing.

11. The test device of claim 1, wherein the measuring device is configured and arranged to carry out at least one of the measurements in the group consisting of:

a glucose measurement, a cholesterol measurement, a coagulation measurement, and an immunology measurement.

12. A magazine for use in the test device of claim 1, the magazine comprising a plurality of stacked cavities each configured to receive a substantially flat test strip, each test strip being received parallel to one another in the cavities, wherein each test strip comprises at least one connecting device for connecting the test element to the dispensing device.

13. The magazine of claim 12, wherein the connecting device comprises at least one opening through each test strip for passage of a rotation axle.

14. The magazine of claim 12, wherein each test strip is configured for electrochemical determination of the at least one analyte concentration.

15. The magazine of claim 12, wherein each test strip comprises a capillary system for conveying a liquid sample from an application site to a measurement site.