Method and device for the concentration of multiple microorganisms and toxins from large liquid toxins

Patent metadata

Field	Value
Publication number	US-9522350-B2
Application number	US-201314079325-A
Country	US
Kind code	B2
Filing date	Nov 13, 2013
Priority date	Jun 13, 2007
Publication date	Dec 20, 2016
Grant date	Dec 20, 2016

Abstract

A method for the simultaneous concentration of multiple toxins from large volumes of water. The method includes the steps of providing a disposable separation centrifuge bowl, the centrifuge bowl including a positively charged material at it's inner core. A large water sample contaminated with toxins from a group consisting of protozoa, bacteria, bacterial spores, and toxins is delivered to the centrifuge bowl. A centrifugal force is applied to the separation bowl. The water sample is concentrated to remove large particles of the toxins in the bowl due to the centrifugal forces. The concentrated water sample is passes through the positively charged inner core to capture any remaining concentrated targets by electrostatic forces and the concentrated targets are eluted.

First claim

What is claimed is:

1. A device for concentrating multiple pathogens from large liquid samples comprising:
a centrifuge bowl;
a core located within the centrifuge bowl, the core comprising an outer core and an inner core, the outer core and the inner core comprising a core material having a plurality of holes in the core material;
a layer of positively charged filter material located between the outer core and the inner core;
an inner fluid passageway located within the core; and
an inlet located at one end of the centrifuge bowl of receiving the liquid sample containing the pathogens and delivering the liquid sample to the core, and wherein the plurality of hole in the core material allows the liquid sample to flow through the core material to the positively charged material such the concentrated pathogens are attracted and adhere to the positively charge material.

2. The device of claim 1 , further comprising a centrifuge, said centrifuge bowl being located within the centrifuge during concentration of the multiple pathogens.

3. The device of claim 1 , wherein the multiple pathogens are from a group consisting of protozoa, bacteria, bacterial spores, and toxins.

4. The device of claim 1 , wherein the inner core is spaced from and located within the outer core, wherein the positively charged material is located between the inner and outer cores.

5. An automated portable system for concentrating and eluting multiple pathogens from large liquid samples comprising:
a concentrator; and
a sterile, disposable set including a high separation core centrifuge bowl, a plurality of collection bags, and tubing for connecting the collection bags to the core bowl and the liquid samples, wherein the core bowl includes
a core located within the core bowl, the core comprising an inner core, an outer core and a layer of positively charged filter material located between the outer core and the inner core, the inner core and the outer core comprising a core material having a plurality of hole in the core material; and
an inner fluid passageway located within the core; and
an inlet located at on end of the bowl for receiving the liquid sample containing the pathogens and delivering the sample to the core, and wherein the plurality of holes in the material allows the liquid sample to flow through the core material and the positively charged material such that the concentrated pathogens are attracted and adhere to the positively charge material of the core.

6. The system of claim 5 , wherein the concentrator includes a centrifuge and a pump, the core bowl being removably disposed in the centrifuge.

7. The device of claim 5 , wherein the multiple pathogens are from a group consisting of protozoa, bacteria, bacterial spores, and toxins.

8. The device of claim 5 , wherein the inner core is spaced from and located within the outer core, wherein the positively charged material is located between the inner and outer cores.

Assignees

• Tufts College
• Haemonetics Corp

Inventors

• Tzipori Saul
• Zukerman Udi
• Stacey Gary

Classifications

• B01D21/302

  Active control mechanisms with external energy, e.g. with solenoid valve · CPC title

• B03C3/15

  Centrifugal forces · CPC title

• B01D21/262 Primary

  by using a centrifuge · CPC title

• B03C2201/26

  for use in medical or biological applications · CPC title

• B01D2221/10

  Separation devices for use in medical, pharmaceutical or laboratory applications, e.g. separating amalgam from dental treatment residues · CPC title