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1. (EP1293256) Method of centrifuging and reading a fluid sample

Office : European Patent Office
Application Number: 02026728 Application Date: 19.02.1999
Publication Number: 1293256 Publication Date: 19.03.2003
Publication Kind : A3
IPC:
G 01N
B 04B
B04B 5/04
G01N 15/04
G01N 21/07
G PHYSICS
01
MEASURING; TESTING
N
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
15
Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
04
Investigating sedimentation of particle suspensions
B PERFORMING OPERATIONS; TRANSPORTING
04
CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
B
CENTRIFUGES
5
Other centrifuges
04
Radial chamber apparatus for separating predominantly liquid mixtures, e.g. butyrometers
B PERFORMING OPERATIONS; TRANSPORTING
04
CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
B
CENTRIFUGES
5
Other centrifuges
04
Radial chamber apparatus for separating predominantly liquid mixtures, e.g. butyrometers
G PHYSICS
01
MEASURING; TESTING
N
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
15
Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
04
Investigating sedimentation of particle suspensions
G PHYSICS
01
MEASURING; TESTING
N
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21
Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible, or ultra-violet light
01
Arrangements or apparatus for facilitating the optical investigation
03
Cuvette constructions
07
Centrifugal type cuvettes
CPC:
B04B 5/0407
G01N 15/042
G01N 21/07
G01N 2015/047
Applicants: BECTON DICKINSON CO
Inventors: THOMAS BRADLEY S
KELLY MICHAEL A
WALTERS MICHAEL R
SKEVINGTON EDWARD M
GAIDIS PAUL F
Priority Data: 99103302 19.02.1999 EP
3293498 02.03.1998 US
Title: (DE) Verfahren zum Zentrifugieren und Ablesen einer Fluidprobe
(EN) Method of centrifuging and reading a fluid sample
(FR) Procédé de centrifugation et de la lecture d'un échantillon de fluide
Abstract: front page image
(EN) A centrifuge device that is used to centrifuge a fluid sample, such as a blood sample, to separate the fluid sample into its various component layers, and which is capable of measuring the length of the component layers to calculate cell counts for each layer. The centrifuge device includes a rotor assembly for rotating and thus centrifuging the fluid sample, and a movable optical reader device for reading the cell layers in the centrifuged sample. The centrifuge device is capable of accurately controlling the reading of the centrifuged sample based on the orientation of the rotor, so that the rotor can continue to rotate the centrifuged sample while the readings are being taken.