Method of making microorganism sampling tube containing slanted culture medium and sample tube tray therefor

• US 7,709,241 B2
• Filed: 03/15/2005
• Issued: 05/04/2010
• Est. Priority Date: 03/17/2004
• Status: Active Grant

• Current Assignee: Becton, Dickinson & Co
• Original Assignee: Becton, Dickinson & Co
• Inventors: Muller, Charles, Glaser, Mark, Zabetakis, Michael, Racine, David, Cordero, Angelo, Dowlin, Carter S., Henderson, Roy, Schaub, Chandra, Aragon, Gregorio, Torppey, Kim
• Primary Examiner(s): Marcheschi; Michael A
• Assistant Examiner(s): HOBBS, MICHAEL L
• Application Number:
  US11/079,909
• Publication Number:
  US 20050214924A1
• Time in Patent Office: 1,876 Days
• Field of Search: 435/296.1, 435/299.1, 435/304.1, 435/809, 435/252.1, 435/253.6
• US Class Current: 435/252.1
• CPC Class Codes: B01L 2200/025 Align devices or objects to ensure defined positions relative to each other
• CPC Class Codes: B01L 2300/0858 Side walls
• CPC Class Codes: B01L 9/06 Test-tube stands; Test-tube holders
• CPC Class Codes: C12M 23/08 Flask, bottle or test tube
• CPC Class Codes: C12M 23/48 Holding appliances; Racks; Supports holding devices for laboratory apparatus B01L9/00
• CPC Class Codes: C12M 37/00 Means for sterilizing, maintaining sterile conditions or avoiding chemical or biological contamination C12M23/38 takes precedence; filtration in general and filters per se B01D24/00-B01D41/00; autoclaves B01J3/04; treatment of microorganisms with electrical or wave energy C12N13/00

Abstract

A method of making sampling tubes containing culture growth media by loading the sample tubes containing culture media into a tray that holds the sample tubes, placing the sample tube trays into a rack with shelving to hold the trays and tubes at a predetermined angle, and sterilizing and cooling the sample tubes in an autoclave or inspissator. The culture growth media solidifies at the predetermined slant angle and the sample tube trays are loaded into the packaging box used for shipment. The trays are subsequently used by the end user for processing microbial growth, including storing and collecting data about microbial samples.

Claims

1. A method for processing microbial cultures comprising:

loading a plurality of sample tubes filled with culture media into at least one tray;

placing said at least one tray onto a rack, said rack maintaining said at least one tray and the sample tubes within that tray in a position wherein the culture media slants at a slant angle within said tubes wherein the slant angle is measured from the sample tubes in a horizontal position;

sterilizing said tray holding said plurality of tubes filled with culture media in a sterilizing apparatus;

cooling said rack and tray holding said plurality of tubes filled with culture media and said rack after completion of the sterilizing step, so that the culture media solidify within said tubes at said slant angle; and

transferring said tray holding said plurality of tubes after the cooling step from said rack into shipping packages for shipment, wherein said tray is ready for use by an end user.

2. The method of claim 1, wherein said plurality of sample tubes have been pre-filled with culture media, capped and labeled prior to sterilization.

3. The method of claim 1, wherein the rack maintains said at least one tray in a position that slants the culture media at said slant angle within said tubes by using a side support and a bottom shelf support ridge.

4. The method of claim 1, wherein the sterilization step is performed by an autoclave or by an inspissator.

5. The method of claim 4, further comprising the step of placing said rack into an autoclave or an inspissator.

6. The method of claim 1, wherein said tray provides sufficient space around each tube to allow for substantially unobstructed flow of liquids, moisture, steam and/or gas around the tube.

7. The method of claim 1, further comprising the step of using said tray at a laboratory station for at least one of placing microbial samples in said sample tubes, organizing said sample tubes for growth of said microbial samples, or collecting data corresponding to said microbial samples.

8. The method of claim 7, wherein said tray is stored in a below-room temperature environment.

9. The method of claim 7, wherein said tray is stored in an above-room temperature environment.

10. The method of claim 1, further comprising the step of using said tray at a laboratory station to facilitate examining microbial culture growth within said sample tubes and collecting data corresponding to said microbial culture growth.

11. The method of claim 1, wherein the cooling step is performed within the same apparatus that performs the sterilizing step.

12. The method of claim 1, wherein the slant angle is non-zero.

13. A method of growing microbial cultures using a sample tube tray comprising the steps of:

preparing slanted growth culture media in sample tubes disposed in a tray including sterilizing said tray containing said sample tubes with slanted growth culture media followed by cooling said tray thereby solidifying said slanted growth culture media;

transferring said tray containing said sample tubes with slanted growth culture media after cooling into a shipping container, wherein said tray is ready for use by an end user;

removing said tray containing said sample tubes with slanted growth culture media from said shipping container by said end user;

holding said sample tubes in said tray at a laboratory station while placing microbial samples in said sample tubes; and

processing said sample tubes to grow microbial cultures.

14. The method of claim 13, wherein said processing step comprises storing said sample tubes and trays in a refrigerator.

15. The method of claim 13, wherein said processing step comprises storing said sample tubes and trays in an incubator.

16. A method of growing microbial cultures using a sample tube tray comprising the steps of:

preparing growth culture media including holding said sample tray in a position that maintains culture media disposed within said sample tubes in a non-slanted horizontal position and sterilizing said tray containing said sample tubes with growth culture media followed by cooling said tray thereby solidifying the horizontal, non-slanted growth culture media;

transferring said tray containing said sample tubes with growth culture media after cooling into a shipping container, wherein said tray is ready for use by an end user;

removing said tray containing said sample tubes with growth culture media from said shipping container by said end user;

holding said sample tubes in said tray at a laboratory station while placing microbial samples in said sample tubes; and

processing said sample tubes to grow microbial cultures.

17. The method of claim 16, wherein said processing step comprises storing said sample tubes and trays in a refrigerator.

18. The method of claim 16, wherein said processing step comprises storing said sample tubes and trays inan incubator.

19. A method for processing microbial cultures comprising:

loading a plurality of sample tubes filled with culture media into at least one tray;

placing said at least one tray onto a rack, said rack maintaining the sample tubes within said tray in a substantially horizontal position wherein the culture media within said sample tubes is non-slanted;

sterilizing said tray holding said plurality of tubes filled with culture media in a sterilizing apparatus;

cooling said rack and tray holding said plurality of tubes filled with culture media and said rack after completion of the sterilizing step, so that the culture media solidify within said tubes at said slant angle; and

transferring said tray holding said plurality of tubes after the cooling step from said rack into shipping packages for shipment, wherein said tray is ready for use by an end user.