IP Library Granted Patent US 7,691,600
Granted Patent B2
US 7,691,600 · App. 10/551,989 · Granted Apr 6, 2010

Method for detecting and/or identifying bacteria present in a sample

Assignee: Biomerieux
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Quick Facts
Patent No.
US 7,691,600
App. No.
10/551,989
Granted
Apr 6, 2010
Kind
B2
Abstract

The present invention relates to a method for detecting and/or identifying bacteria present in a liquid or solid sample, characterized in that: a. the sample that may contain said bacteria is placed in a liquid culture medium, in a first container, b. a second container comprising at least one system for detecting said bacteria is provided, c. a means of transfer between the first container and the second container is provided, d. a temperature T1 is applied inside the second container, then e. a temperature T2 is applied inside the second container, f. the temperature T1 is higher than the temperature T2 such that a defined volume of culture medium is transferred from the first container to the second container, g. the presence or absence of bacteria is determined and/or the bacteria are identified within the detection system.

Claims (16)

1. A method for detecting and/or identifying bacteria present in a liquid or solid sample, wherein:

a. the sample that may contain said bacteria is placed in a liquid culture medium, in a first container;

b. a second container comprising at least one system for detecting said bacteria is provided separate from said first container;

c. a means of transfer between the first container and the second container is provided, said means of transfer comprising at least a first opening in the first container and at least a second opening in the second container, such that the second container delimits a first volume of air between the second opening of the transfer means and the at least one system for detecting said bacteria and/or delimits a second volume of air between the first opening and the second opening;

d. a temperature T1 is applied inside the second container; then

e. a temperature T2 is applied inside the second container;

f. the temperatures T1 and T2 are applied inside the second container at an exponential growth phase of the bacteria;

g. the temperature T1 is higher than the temperature T2;

h. the temperatures T1 and T2 are applied inside the second container such that a predetermined volume of culture medium with bacteria is transferred from the first container to the second container;

i. the temperatures T1 and T2 are maintained such that the bacteria remain viable; and

j. the presence or absence of bacteria is determined and/or the bacteria are identified with the at least one system for detecting said bacteria in said second container.

2. The method according to claim 1 , wherein T1 is between 25 and 45° C.

3. The method according to claim 1 , wherein T2 is between 4 and 24° C.

4. A kit for detecting and/or identifying bacteria by means of implementing the method according to claim 1 .

5. The method according to claim 2 , wherein T1 is between 30 and 42° C.

6. The method according to claim 3 , wherein T2 is between 13 and 18° C.

Assignments (3)
SECURITY INTEREST Recorded Apr 19, 2024
From: NEXTIVA, INC.; THRIO, INC.
To: WELLS FARGO BANK, NATIONAL ASSOCIATION, AS ADMINISTRATIVE AGENT
Reel/Frame 067172/0404 →
CORRECTIVE ASSIGNMENT TO CORRECT THE DATES OF EXECUTION. DOCUMENT PREVIOUSLY RECORDED AT REEL 017121 FRAME 0955. Recorded Aug 22, 2006
From: MERCADER BADIA, JOSEP VICENT; COLIN, BRUNO; ATRACHE, VINCENT
To: BIOMERIEUX
Reel/Frame 018164/0543 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 14, 2005
From: MERCADER BADIA, JOSEP VICENT; COLIN, BRUNO; ATRACHE, VINCENT
To: BIOMERIEUX CHEMIN DE L'ORME
Reel/Frame 017121/0955 →
Priority Claims (1)
FR 0304262 · Apr 7, 2003 · national
Continuity (1)
Related Publication 20070020720A1 · Jan 25, 2007