Method for treating at least one biological sample containing a target microorganism

Patent metadata

Field	Value
Publication number	US-10352834-B2
Application number	US-201715700360-A
Country	US
Kind code	B2
Filing date	Sep 11, 2017
Priority date	Nov 7, 2012
Publication date	Jul 16, 2019
Grant date	Jul 16, 2019

Abstract

A method of processing at least one biological sample capable of containing at least one target microorganism, the method being carried out within a container and including: (a) performing at least one step of homogenizing the biological sample, during which contents of the container are displaced from a level n, corresponding to a level of the contents at rest, to a homogenization level nh, distinct from the level n, and vice versa; and (b) generating a displacement of the contents to a level n+1, which is different from levels n and nh, such that the contents come into contact with at least one culture, at least one analysis device, or a combination thereof, positioned in a chamber of the container, between level n+1 inclusive and level nh exclusive, wherein step b) takes place before, after or during all or part of the homogenization step a).

First claim

What is claimed is:

1. A method of processing at least one biological sample capable of containing at least one target microorganism, the method being carried out within a container and comprising:
a) performing at least one step of homogenizing the biological sample, during which contents of the container are displaced from a level n, corresponding to a level of the contents at rest, to a homogenization level nh, distinct from the level n, and vice versa; and
b) generating a displacement of the contents to a level n+1, which is different from levels n and nh, such that the contents come into contact with at least one culture, at least one analysis device, or a combination thereof, positioned in a chamber of the container, between level n+1 inclusive and level nh exclusive, wherein the at least one culture, analysis device, or combination thereof is placed at one or more locations inside the container so as to (1) not be in contact with the contents when the contents are at the level n or are displaced to the level nh and (2) come into contact with the contents during the generating the displacement of the contents to the level n+1,
wherein step b) takes place before, after or during all or part of the homogenization step a).

2. The method according to claim 1 , the method further comprising, before step b);
a′) placing the biological sample in contact with at least one culture medium within the container, the mixture of the biological sample and of the culture medium forming all or part of the contents of the container; and
a″) incubating the container at a temperature and for a period of time sufficient to allow growth of the at least one target microorganism.

3. The method according to claim 2 , wherein the homogenization step a) is carried out at least in part during the incubation step a″).

4. The method according to claim 3 , wherein the homogenization step a) is carried out for a period of time greater than 2 minutes.

5. The method according to claim 1 , wherein the displacement of the contents from level n to level nh and the displacement of the contents from level n to level n+1 are generated by a same displacement device at two different intensities.

6. The method according to claim 5 , wherein the displacement device is a part of a device for processing the at least one biological sample capable of containing the at least one target microorganism within the at least one container, said device for processing the at least one biological sample further comprising:
at least one site for receiving the at least one container, the at least one container being configured to receive the at least one biological sample within the at least one container, wherein the at least one site is delimited by a wall fixed on a base and the displacement device, movable with respect to the base;
the at least one container comprising a flexible material to allow the at least one container to be compressed against the wall; and
wherein the displacement device is moveable with respect to the wall to exert a pressure onto the outer surface of the at least one container to impose on the at least one container a deformation for generating the displacement of the contents from the level n to the level nh, and the displacement of the contents from the level n to the level n+1, at two different intensities.

7. The method according to claim 6 , wherein the displacement device is selected from the group consisting of a movable aril, a movable blade, a movable wall, and a movable applicator.

8. The method according to claim 6 , wherein the device for processing the at least one biological sample comprises at least one heating element configured to incubate the at least one container.

9. The method according to claim 6 , wherein the device for processing the at least one biological sample comprises a control element configured to alter the two different intensities of displacement of the contents.

10. The method according to claim 6 , wherein the device for processing the at least one biological sample comprises an optical detection device configured to detect a presence of said at least one target microorganism.

11. The method according to claim 1 , further comprising: generating a displacement of the contents to a transfer level nt, such that a transfer of all or part of the contents proceed from the transfer level nt of the container to another part of the container or to at least one other container.

12. The method according to claim 1 , wherein the culture is an antimicrobial-type selective agent.

13. The method according to claim 1 , further comprising step c) analyzing the at least one target microorganism via the analysis device, wherein the analysis device is selected from at least one of a functionalized capture support analysis device or a biosensor analysis device.

14. The method according to claim 1 , wherein the at least one analysis device is at least one device allowing direct or indirect detection of micro-organisms.

15. The method according to claim 14 , wherein the at least one device allowing direct or indirect detection of micro-organisms is at least one functionalised capture support.

16. A method of processing at least one biological sample capable of containing at least one target microorganism, the method being carried out within a container and comprising:
a) performing at least one step of homogenizing the biological sample, during which contents of the container are displaced from a level n, corresponding to a level of the contents at rest, to a homogenization level nh, distinct from the level n, and vice versa;
b) generating a displacement of the contents to a level n+1, which is different from levels n and nh, such that the contents come into contact with at least one culture, at least one analysis device, or a combination thereof, positioned in a chamber of the container, between level n+1 inclusive and level nh exclusive, and
c) generating a displacement of the contents to a level n+1+x, such that the contents come into contact with at least one additional culture, at least one additional analysis device, or a combination thereof positioned in the chamber of the container, between levels n+1+x inclusive and a level (n+1+x)−1 exclusive, wherein x is a whole number between 1 and 10;
wherein step b) takes place before, after or during all or part of the homogenization step a); and
step c) is performed subsequent to step b).

17. A method of processing at least one biological sample capable of containing at least one target microorganism, the method being carried out within a container and comprising:
a′) placing the biological sample in contact with at least one culture medium within the container, the mixture of the biological sample and of the culture medium forming all or part of the contents of the container;
a″) incubating the container at a temperature and for a period of time sufficient to allow growth of the at least one target microorganism;
a) performing at least one step of homogenizing the biological sample, during which contents of the container are displaced from a level n, corresponding to a level of the contents at rest, to a homogenization level nh, distinct from the level n, and vice versa; and
b) generating a displacement of the contents to a level n+1, which is different from levels n and nh, such that the contents come into contact with at least one culture, at least one analysis device, or a combination thereof, positioned in a chamber of the container, between level n+1 inclusive and level nh exclusive,
wherein steps a′), a″), and a) each takes

Assignees

• Biomerieux Sa

Inventors

• Baril Florent
• Colin Bruno
• Flandrois Jean-Pierre
• Junillon Thomas
• Mallen Benoît
• Minassian Edgard
• Mosticone David
• Vimont Antoine

Classifications

• C12M27/02

  Stirrer or mobile mixing elements · CPC title

• C12M41/12

  of temperature (controlling the temperature of chemical or physical processes B01J19/0013, heating or cooling apparatus for laboratory use B01L7/00) · CPC title

• G01N33/56911

  Bacteria · CPC title

• C12M41/44

  of volume or liquid level · CPC title

• G01N33/56916

  Enterobacteria, e.g. shigella, salmonella, klebsiella, serratia · CPC title