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1. (US6002474) Method for using blood centrifugation device with movable optical reader

Office : United States of America
Application Number: 09032934 Application Date: 02.03.1998
Publication Number: 6002474 Publication Date: 14.12.1999
Grant Number: 6002474 Grant Date: 14.12.1999
Publication Kind : A
IPC:
G01N 21/01
B04B 5/00
B04B 5/04
G01N 15/04
G01N 21/03
G01N 21/07
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
B PERFORMING OPERATIONS; TRANSPORTING
04
CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
B
CENTRIFUGES
5
Other centrifuges
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
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
Applicants: Becton Dickinson and Company
Inventors: Thomas Bradley S.
Kelly Michael A.
Walters Michael R.
Skevington Edward M.
Gaidis Paul F.
Agents: Weintraub Bruce S.
Priority Data:
Title: (EN) Method for using blood centrifugation device with movable optical reader
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.