Devices for separation of particulates, associated methods and systems

Patent metadata

Field	Value
Publication number	US-10518196-B2
Application number	US-201615209411-A
Country	US
Kind code	B2
Filing date	Jul 13, 2016
Priority date	Jan 29, 2014
Publication date	Dec 31, 2019
Grant date	Dec 31, 2019

Abstract

A separation device, system and associated method are provided herein for separation of particulates form a base fluid. The separation device comprises a first microchannel comprising a fluid inlet and a mesofluidic collection chamber. The mesofluidic collection chamber has a first side and a second side, wherein the mesofluidic collection chamber is operatively coupled to the first microchannel on the first side, and wherein the mesofluidic collection chamber comprises a first fluid outlet at the second side, such that the fluid inlet, first microchannel, and first fluid outlet are in fluidic communication via the mesofluidic collection chamber.

First claim

The invention claimed is:

1. A separation device for separating particulates dispersed in a base fluid, the device comprising:
a fluid inlet; a fluid outlet;
a first microchannel disposed between the fluid inlet and the fluid outlet and having a height h 1 in a range of 1 to 1000 microns and a length li; and
a mesofluidic collection chamber comprising a height h 3 in a range of 2 mm to 20 mm and coupled to the first microchannel on a first side of the mesofluidic collection chamber;
the device configured such that the particulates dispersed in the base fluid traverse through the first microchannel and are caused to migrate through the device by a force field applied across one or more dimensions of the first microchannel, and
the particulates delaminate from the base fluid, generate lamellar flow lines and are driven into a specific laminate of a plurality of layers of the base fluid flowing within the first microchannel and wherein the particulates follow their respective lamellar flow lines during fluidic expansion from the first microchannel to the mesofluidic collection chamber while entering into the mesofluidic collection chamber, wherein at least a portion of the particulates in at least a portion of the base fluid are collected in the mesofluidic collection chamber.

2. The device of claim 1 , further comprising a second microchannel having a second fluid outlet disposed at a second side of the mesofluidic collection chamber, such that the fluid inlet, first microchannel, second microchannel, and second fluid outlet are in a fluidic communication via the mesofluidic collection chamber, and wherein the second microchannel has a length l 2 in a range from about 5 millimeters to about 100 millimeters and a height h 2 .

3. The device of claim 2 , further comprising an input chamber operatively coupled to the first microchannel via the fluid inlet.

4. The device of claim 3 , further comprising an output chamber operatively coupled to the second microchannel via the second fluid outlet.

5. The device of claim 2 , wherein the lengths l 1 and l 2 are each in a range from about 16 millimeters and about 70 millimeters.

6. The device of claim 1 , wherein the force field comprises a gravitational field.

7. The device of claim 1 , wherein the force field comprises an applied magnetic field, an applied electric field, an acoustic field, or combinations thereof.

8. The device of claim 1 , wherein the mesofluidic collection chamber has a length l 3 in a range from about 1 centimeter to about 25 centimeters.

9. The device of claim 1 , further comprising a microporous body disposed within the mesofluidic collection chamber.

10. The device of claim 9 , wherein the microporous body comprises pores with an average diameter in a range from about 10 microns to about 500 microns.

11. The device of claim 9 , wherein the microporous body has a porosity in a range from about 10 percent to about 75 percent.

12. The device of claim 1 further comprising particulate traps positioned in a bottom of the mesofluidic collection chamber.

13. The device of claim 9 , wherein the base fluid comprises one or more of a whole blood, cells in culture medium, a cell extract, a tissue extract, a petroleum product, an oil and water emulsion, and water sample and the device separates at least one of a plurality of particulates, cells or biomolecules from the one or more of the whole blood, the cells in culture medium, the cell extract, the tissue extract, the petroleum product, the oil and water emulsion, and the water sample.

14. The device of claim 9 , wherein the base fluid comprises a suspended medium and the device selectively separates a plurality of particulates in the suspended medium based on a size of the plurality of particulates.

15. The device of claim 14 , wherein the plurality of particulates comprise fine resin particles smaller than a predetermined range of particle size for use in chromatography devices smaller than a predetermined range of particle size.

16. The device of claim 9 , wherein the particulates comprise one or more of red blood cells, white blood cells, blood platelets, non-hematic biological cells, tissue fragments, non-cellular biological solid, fine resin particulates, metals, and minerals.

17. The device of claim 16 , wherein the particulates comprise one or more of red blood cells, white blood cells, blood platelets, cultured cells, tissue fragments, non-hematic biological cells, or biomolecules.

18. The device of claim 16 , wherein the particulates comprise one or more of fine resin particulates, resin beads, metals, minerals.

19. The device of claim 1 , wherein the mesofluidic collection chamber further comprises one or more collection-outlets for recovering the portion of the particulates collected in the mesofluidic collection chamber.

20. The device of claim 1 , wherein the particulates have a largest dimension in a range from about 1 micron to about 250 microns.

21. The device of claim 1 , further comprising one or more controllers for controlling one or more of the force field, a first linear velocity of a fluid flow through the first microchannel, a second linear velocity of a fluid flow through the mesofluidic collection chamber.

22. The device of claim 1 , further comprising a first fluid driver configured to:
facilitate a flow of the base fluid having the particulates through the first microchannel; and
extract at least a portion of a processed fluid from the device, wherein the processed fluid is enriched in the base fluid and depleted in the particulates.

23. The device of claim 1 , further comprising a second fluid driver configured to recover at least a portion of particulates collected in the mesofluidic collection chamber.

24. The device of claim 9 , wherein a fluid flow regime of the base fluid comprises a first fluid flow through the first microchannel having a first linear velocity to enable particulate delamination in the first microchannel, a second fluid flow through the mesofluidic collection chamber having a second linear velocity to enable sedimentation of the delaminated particulates in the mesofluidic collection chamber, and wherein the second linear velocity is a fraction of the first linear velocity.

25. The device of claim 1 , wherein the device is free of any membrane and porous barrier.

26. A system comprising:
(a) a separation device for separating particulates dispersed within a base fluid and having a relative density difference compared to the base fluid, comprising:
a fluid inlet; a fluid outlet;
a first microchannel disposed between the fluid inlet and the fluid outlet and having a height h 1 in a range of 1 to 1000 microns and a length li; and
a mesofluidic collection chamber comprising a height h 3 in the range of 2 mm to 20 mm and distally coupled to the first microchannel on a first side of the mesofluidic collection chamber;
(b) an input chamber operatively coupled to the first microchannel via the fluid inlet; and
(c) an output chamber operatively coupled to the mesofluidic collection chamber via the fluid outlet,
the device configured such that the particulates dispersed in the base fluid traverse through the first microchannel and are caused to migrate through the device by a force field applied across one or more dimensions of the first microchannel, and wherein the particulates delaminate from the base fluid, generate lamellar flow lines a

Assignees

• Gen Electric

Inventors

• Puleo Christopher Michael
• Galligan Craig Patrick
• Grossman Gregory Andrew
• Kvam Erik Leeming
• Duthie Robert Scott
• Rigby Kenneth Wayne
• Smigelski Jr Paul Michael
• Cotero Victoria Eugenia
• Castle Jason William
• Burczak John Donald
• Rothman James Edward

Classifications

• C02F1/48

  with magnetic or electric fields (C02F1/46 takes precedence) · CPC title

• B01L2400/043

  magnetic forces · CPC title

• B01L2200/0652

  Sorting or classification of particles or molecules · CPC title

• B01D21/2444

  Discharge mechanisms for the classified liquid · CPC title

• C12M47/04

  Cell isolation or sorting (purging biological preparations of unwanted cells C12N5/0081, determining the presence or kind of microorganism C12Q1/04) · CPC title