Labware identification system

• US 5,663,545 A
• Filed: 08/23/1995
• Issued: 09/02/1997
• Est. Priority Date: 08/23/1995
• Status: Expired due to Fees

• Current Assignee: LJL Biosystems, Inc. (Molecular Devices)
• Original Assignee: LJL Biosystems, Inc. (Molecular Devices)
• Inventors: Marquiss, Samuel A.
• Primary Examiner(s): Hajec, Donald T.
• Assistant Examiner(s): TREMBLAY, MARK STEPHEN
• Application Number:
  US08/518,484
• Time in Patent Office: 741 Days
• Field of Search: 235/375, 235/462, 235/486, 235/383, 235/385, 422/104, 422/65, 422/119
• US Class Current: 235/375
• CPC Class Codes: B01L 3/5453 for test tubes
• CPC Class Codes: B01L 9/06 Test-tube stands; Test-tube holders

Abstract

The invention presents a system for automatically identifying labware and sample containers. Labeled sample containers are inserted into the reception slots of a labeled labware. A sample condition label is affixed below each reception slot. The sample condition label is covered by the sample container when the sample container is inserted into the reception slot. An exposed sample condition label indicates the absence of a sample container in that reception slot. The labware containing the sample containers is installed on a labware holder having a labware condition label affixed to its surface. The labware condition label is covered by the labware when the labware is installed on the labware holder. An exposed labware condition label indicates the absence of a labware on the labware holder. The label information is read by an optical reader attached to a motorized track. Both the optical reader and the motorized track are connected to a data processor. The data processor stores the label information and controls the position of the optical reader.

Claims

1. A labware identification system comprising:

a) a sample container, said sample container having a sample identification label thereon;

b) a labware having a reception slot for keeping said sample container, said labware further having a sample condition label positioned near said reception slot such that when said sample container is present in said reception slot said sample condition label is covered up by said sample container and said sample identification label is exposed, and when said sample container is absent from said reception slot, said sample condition label is exposed, said labware further having thereon a labware identification label;

c) a labware holder having a locating means for positioning said labware on said labware holder, said labware holder further having a labware condition label thereon such that when said labware is positioned in said labware holder, said labware condition label is covered and said labware identification label is exposed, and when said labware is absent from said labware holder, said labware condition label is exposed; and

d) an optical reader for reading label information from said sample identification label, said sample condition label, said labware identification label, and said labware condition label; and

e) a data processor for processing said label information read by said optical reader.

2. The labware identification system of claim 1 wherein said sample identification label and said sample condition label are arranged along the same line of sight from said optical reader.

3. The labware identification system of claim 1 wherein said labware has a plurality of reception slots for keeping a plurality of sample containers.

4. The labware identification system of claim 3 wherein said plurality of reception slots are of a uniform size and shape.

5. The labware identification system of claim 3 wherein said plurality of reception slots vary in size and shape such that they can keep a plurality of sample containers of varied size and shape.

6. The labware identification system of claim 1 wherein said sample container is a test tube.

7. The labware identification system of claim 1 wherein said data processor is an inventory unit for inventorying, storing, and tracking said label information.

8. The labware identification system of claim 1 wherein said locating means comprises a plurality of indexing pins attached to said labware and a plurality of indexing holes in said labware holder, said plurality of indexing holes receiving said plurality of indexing pins when said labware is positioned on said labware holder.

9. The labware identification system of claim 1 wherein said locating means comprises a groove on said labware holder and a ridge on said labware, said groove receiving said ridge when said labware is positioned on said labware holder.

10. The labware identification system of claim 1 wherein said locating means comprises one or more positioning lines on said labware holder.

11. The labware identification system of claim 1 wherein said optical reader can read barcode information.

12. The labware identification system of claim 1 wherein said optical reader can read character information.

13. The labware identification system of claim 1 wherein said labware identification label contains barcode information.

14. The labware identification system of claim 1 wherein said labware identification label contains character information.

15. The labware identification system of claim 1 wherein said sample identification label contains barcode information.

16. The labware identification system of claim 1 wherein said sample identification label contains character information.