Method and system for identifying the gram type of a bacterium
AssigneeBiomerieux
InventorsJordane Lallemand, Denis Leroux, Manuel Petit
Life of this patent
Estimating the term…
Abstract
The invention relates to a method for detecting the Gram type and the fermenting character of a bacterial strain, said method comprising: illuminating, in the wavelength range of 390 nm to 900 nm, at least one bacterium from said strain which has a natural electromagnetic response within said range; acquiring, within said range, a light intensity reflected by, or transmitted through, said illuminated bacterium; and determining the Gram type and the fermenting character of the bacterial strain according to the light intensity acquired within said range.
Claims27
A process for detecting the Gram type and the fermentative character of a bacterial strain, comprising:
- illuminating in a wavelength range 390 nm-900 nm at least one bacterium of the strain having a natural electromagnetic response in the range, wherein the illuminating covers one or more wavelength ranges, wherein the one or more wavelength ranges cover at least two distinct spectral bands whose center wavelengths are more than 50 nm apart;
- acquiring, within the range, a luminous intensity reflected from or transmitted through the illuminated bacterium;
- and
- determining the Gram type and the fermentative character of the bacterial strain as a function of the luminous intensity acquired in the range, by applying an automated prediction model,
- wherein the prediction model includes at least ne class identifying the Gram type of the bacterial strain,
- wherein the prediction model includes at least ne class identifying the fermentative character of the bacterial strain,
- wherein the prediction model does not include a class identifying the microorganism at a species level.
A system for detecting the Gram type and the fermentative character of a bacterial strain, comprising:
- an illumination device configured to illuminate, in a wavelength range 390 nm-900 nm, at least one bacterium of the strain;
- a sensor configured to acquire, in the 390 nm-900 nm range, a luminous intensity reflected from or transmitted through the illuminated bacterium, wherein the illuminating by the sensor covers one or more wavelength ranges, wherein the one or more wavelength ranges cover at least two distinct spectral bands whose center wavelengths are more than 50 nm apart;
- and
- a computer unit configured to determine the Gram type and the fermentative character of the bacterial strain as a function of the luminous intensity acquired in the 390 nm-900 nm range, by applying an automated prediction model,
- wherein the prediction model includes at least one class identifying the Gram type of the bacteria strain,
- wherein the prediction model includes at least one class identifying the fermentative character of the bacterial strain,
- wherein the prediction model does not include a class identifying the microorganism at a species level.
Dependencies are inferred from the claim text.