System for the analysis of sample liquids

• US 5,609,823 A
• Filed: 07/29/1994
• Issued: 03/11/1997
• Est. Priority Date: 08/05/1993
• Status: Expired due to Term

• Current Assignee: Boehringer Mannheim GmbH (Roche Holding AG)
• Original Assignee: Boehringer Mannheim GmbH (Roche Holding AG)
• Inventors: Gentsch, Susanne, Schuessler, Rudolf, Schmidt, Elmar, Harttig, Herbert
• Primary Examiner(s): Le, Long V.
• Application Number:
  US08/282,149
• Time in Patent Office: 956 Days
• Field of Search: 422/63, 422/65, 422/66, 422/67, 422/102, 422/58, 422/104, 436/43, 436/44, 436/46, 436/48, 436/164, 436/165, 436/174, 436/805, 436/807, 436/808, 436/810, 221/210, 221/214, 221/268
• US Class Current: 422/66
• CPC Class Codes: G01N 2035/00089 Magazines
• CPC Class Codes: G01N 2035/00108 Test strips, e.g. paper
• CPC Class Codes: G01N 21/253 for batch operation, i.e. multisample apparatus analytical automats G01N35/00
• CPC Class Codes: G01N 33/48764 Test tape taken off a spool
• CPC Class Codes: G01N 35/00029 provided with flat sample substrates, e.g. slides G01N35/028 takes precedence
• CPC Class Codes: Y10T 436/110833 Utilizing a moving indicator strip or tape
• CPC Class Codes: Y10T 436/112499 with sample on test slide

Abstract

System for the analysis of sample liquids with test elements. The system comprises an instrument with a storage container for test elements and a measuring device. Test elements are located inside the storage container which have a test zone on the front side of a transparent pin.

Claims

1. A system for analysis of sample liquids, said system comprising:

a) a measuring instrument including a radiation source, a radiation receiver and a display means for displaying an analytical result from radiation measured by the radiation receiver, and

b) a storage container having a guide mechanism thereupon, said storage container being insertable into the measuring instrument, said storage container holding a plurality of test elements attached to a tape in a spiral arrangement, with each of the test elements comprising a test zone, with each of said test zones being individually sealed by said tape,

wherein said measuring instrument is configured to individually perform an analysis on each of said plurality of test elements after said test element has been removed from said tape by passing said tape over said guide mechanism thereby changing a direction of movement of the tape by the guide mechanism.

2. System of claim 1, wherein the test elements each include a transparent pin having a front side on which is a test zone of the plurality of test zones.

3. System of claim 1, wherein the test elements are linked together by the tape, and the system includes transport means for transporting the tape through the storage container by winding the tape onto a spool core and for detaching a test element emerging from the storage container from the tape by passing the tape over the guide mechanism.

4. System of claim 1, wherein the test element includes a reagent layer having a sample application side and a side opposite the sample application side, and the radiation source and the radiation receiver are located on the side opposite the sample application side.

5. System of claim 1, wherein the storage container has an opening, and wherein the measuring instrument further comprises a moveable pin and an optical system adjacent thereto, said optical system comprising a part of said radiation source, the moveable pin being moveable relative to the opening to transport a test element from the opening to a sample application position, and wherein the optical system is configured to perform an optical analysis of the test element at a measuring position.

8. A system for analysis of sample liquids as recited in claim 1, wherein said guide mechanism comprises a roller.

9. A system for analysis of sample liquids as recited in claim 1, wherein said guide mechanism comprises an edge.

6. A system for analysis of sample liquids, said system comprising:

a) a storage container means for holding a plurality of test elements in a spiral arrangement therein, said test elements each having a transparent pin having a front side on which is located a test zone which in storage is sealed against atmospheric moisture by a sealing means, the test elements being linked together by a tape, and

b) measuring means for measuring and displaying a parameter of the sample liquid, said measuring means comprising a radiation source, a radiation receiver for measuring reflected or transmitted radiation from the sample liquid, a display means for displaying the parameter derived from the measured radiation, said measuring means being capable of receiving the storage container means therein, and further including transport means for transporting the tape out of the storage container, for unsealing the test element by opening the sealing means, removing the test element from the tape and transporting the test element to a sample application position wherein the test zone of the test element is accessible for sample liquid application.

7. System of claim 6 wherein the transport means transports the removed test element to the sample application position wherein the radiation source and the radiation receiver are on a side of the test element opposite the test zone.