Flow restrictor-separation device

Details Flow restrictor-separation device Flow restrictor-separation device

1992-05-01

1994-02-01

Dawson, Robert A.

Liquid purification or separation

Processes

Separating

210787, 210800, 210516, 422 72, 422101, 73 32R, B01D 2126

Patent

active

052829812

ABSTRACT:
A method of partitioning a pre-selected phase of a sample of liquid having a plurality of phases of differing densities, a separation device and a tube containing the separation device. The sample of liquid is placed in a first chamber of a linear tube that is separated from a second chamber by a separation device. The separation device slidably engages the interior surface of the tube in an essentially fluid-tight manner and has an axial orifice on the longitudinal axis of the tube that is in fluid flow communication with a flow-restriction channel. The phases are ordered concentrically by rotating the tube around its longitudinal axis e.g. in an axial centrifuge. The volume of the first chamber is reduced by movement of the separation device within the tube, that phase of the liquid located axially within the first chamber flowing into the axial orifice and passing through the flow-restriction channel into the second chamber. The reduction of the volume of the first chamber is controlled using phase-separation information. The method is useful in separation of blood components.

REFERENCES:
patent: 3468474 (1969-09-01), Shoblom et al.
patent: 3741400 (1973-06-01), Dick
patent: 3813031 (1974-05-01), Anderson
patent: 3849072 (1974-11-01), Ayres
patent: 3852194 (1974-12-01), Zine, Jr.
patent: 3929646 (1975-12-01), Adler
patent: 3941699 (1976-03-01), Ayres
patent: 3957197 (1976-05-01), Sartory et al.
patent: 3957654 (1976-05-01), Ayres
patent: 4001122 (1977-01-01), Griffin
patent: 4021352 (1977-05-01), Sarstedt
patent: 4038788 (1978-04-01), Ferrara
patent: 4083784 (1978-04-01), Zine, Jr.
patent: 4135883 (1979-01-01), McNeil et al.
patent: 4151844 (1979-05-01), Cullis et al.
patent: 4152269 (1979-05-01), Babson
patent: 4152270 (1979-05-01), Cornell
patent: 4154690 (1979-05-01), Ballies
patent: 4202769 (1980-05-01), Greenspan
patent: 4203840 (1980-05-01), Stoeppler et al.
patent: 4269718 (1981-05-01), Persidsky
patent: 4278202 (1981-07-01), Westberg
patent: 4283276 (1981-08-01), Grant
patent: 4284602 (1981-08-01), Kelton et al.
patent: 4285810 (1981-08-01), Kirkland et al.
patent: 4350585 (1982-09-01), Johansson et al.
patent: 4350593 (1982-09-01), Kessler
patent: 4417981 (1983-11-01), Nugent
patent: 4443345 (1984-04-01), Wells
patent: 4522713 (1985-06-01), Nussbaumer et al.
patent: 4530691 (1985-07-01), Brown
patent: 4534465 (1985-08-01), Rothermal et al.
patent: 4550084 (1985-10-01), Nelson et al.
patent: 4557719 (1985-12-01), Neumann et al.
patent: 4639316 (1987-01-01), Eldegheidy
patent: 4724317 (1988-02-01), Brown et al.
patent: 4828716 (1989-05-01), McEwen et al.

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