Analysis system and method for analyzing a sample on an analytical test element

• US 7,951,331 B2
• Filed: 07/11/2007
• Issued: 05/31/2011
• Est. Priority Date: 07/12/2006
• Status: Expired due to Fees

• Current Assignee: Roche Diabetes Care Inc. (Roche Holding AG)
• Original Assignee: Roche Diagnostics Operations Incorporated (Roche Holding AG)
• Inventors: Kalveram, Stefan, Goetz, Michael, Wehowski, Frederic, Roesicke, Bernd
• Primary Examiner(s): Warden; Jill
• Assistant Examiner(s): TURK, NEIL N
• Application Number:
  US11/776,379
• Publication Number:
  US 20080053201A1
• Time in Patent Office: 1,420 Days
• Field of Search: None
• US Class Current: 422/68.1
• CPC Class Codes: G01N 21/01 Arrangements or apparatus for facilitating the optical investigation
• CPC Class Codes: G01N 21/4738 Diffuse reflection precedence is given to G01N21/55 - G01N21/57 if specular component is taken into consideration, e.g. also for testing fluids, fibrous materials
• CPC Class Codes: G01N 21/8483 Investigating reagent band test-element handling not specific to a test method G01N33/4875; analytical elements specific to chemical analysis of biological material G01N33/52; autometer with reagent band G01N35/04
• CPC Class Codes: Y10T 436/110833 Utilizing a moving indicator strip or tape

Abstract

The invention relates to embodiments of an analysis system and to a method for analyzing a sample on an analytical test element, with the analysis system comprising a test element receptacle for receiving and positioning a test element in an analysis position. In an exemplary embodiment, the test element receptacle contains a guide part and a lock part, the guide part having means for guiding a test element into and out of the analysis position, the lock part comprising a frame and a bolt element, which frame and bolt element are connected to one another by a hinge. The bolt element can be pivoted about the hinge between a first position and a second position with respect to the frame. The bolt element comprises a latching lug for engaging in a recess in test element when the bolt element is in the first position and when the test element is positioned in the analysis position.

Claims

1. Analysis system for analyzing a sample on an analytical test element, comprising a measurement and evaluation device configured for analyzing a sample using a test element, the device comprising a test element receptacle configured for receiving and positioning the test element in an analysis position, the test element receptacle comprising a guide part and a lock part, the guide part being configured to guide the test element into and out of the analysis position, the lock part comprising a frame and a bolt element, the frame and bolt element being integrally connected to one another by a film hinge, the bolt element being pivotable about the film hinge in order to move between a first position and a second position relative to the frame, the bolt element comprising a latching lug for engaging a recess provided in the test element when the test element is positioned in the analysis position and when the bolt element is in the first position, the bolt element further comprising a lever having a first lever arm and a second lever arm pivotally connected by the film hinge, the first lever arm having the latching lug, the bolt element being pivotable between the first position and the second position by application of a force on the second lever arm, wherein the second lever arm comprises a pushing element configured to exert a pushing force in a discharge direction on the test element when positioned in the analysis position when the bolt element is pivoted from the first position into the second position.

2. Analysis system according to claim 1, wherein the lock part and the guide part are injection-molded plastic parts.

3. Analysis system according to claim 1, wherein the lock part is releasably connected to the guide part.

4. Analysis system according to claim 1, wherein the bolt element is prestressed in the first position.

5. Analysis system according to claim 1, the system being configured to operate according to a photometric measurement technique, the system further comprising a light source and a detector arranged relative to each other such that light from the light source is able to pass through a light-transmissive region provided in the guide part to a test field provided on the test element when the test element is in the analysis position, the light further passing in a reflected manner from the test field through the light-transmissive region to the detector.

6. Analysis system according to claim 5, wherein the light source and the detector are arranged on a printed circuit board on which the guide part is fixed, at least one spacer being arranged between the printed circuit board and the guide part.

7. Analysis system according to claim 1, further comprising a switch configured to interact with the latching lug of the bolt element to electrically indicate the positioning of the test element, wherein the switch is triggered by the engagement of the latching lug with the recess when the test element is in the analysis position and the bolt element is in the first position.

8. Method for analysis of a sample on an analytical test element in an analysis system, the analysis system comprising a measurement and evaluation device configured for analyzing a sample applied to a test field on the test element according to a measurement technique, the method comprising the steps of:

receiving a test element in a test element receptacle of the analysis system, the test element being guided into an analysis position by means for guiding the test element in a guide part of the test element receptacle, the test element being locked in the analysis position by a lock part of the test element receptacle, the lock part having a frame and a bolt element which are connected to one another by means of a hinge, the bolt element pivoting about the hinge between a second position and a first position in which a latching lug of the bolt element engages in a recess in the test element which is positioned in the analysis position,

applying a sample to the test field of the test element positioned in the analysis position,

analyzing the sample in a test field of the test element using the measurement technique of the analysis system and

removing the test element from the test element receptacle by pivoting the bolt element into the second position to cause the latching lug to disengage from the recess in the test element, and exerting a force on the test element in a discharge direction, the force being provided by a pushing element provided on the bolt element when the bolt element is moved from the first position to the second position.

9. Method according to claim 8, further comprising the step of scanning the test element along one surface when the test element is received in the test element receptacle, using an optical scanning apparatus provided in the analysis system.