Fluid processing device

Patent metadata

Field	Value
Publication number	US-9636446-B2
Application number	US-99332009-A
Country	US
Kind code	B2
Filing date	May 18, 2009
Priority date	May 20, 2008
Publication date	May 2, 2017
Grant date	May 2, 2017

Abstract

The present invention relates to a system, apparatus, and method for separating components of a fluid, e.g. blood, which eliminates the need for expensive hardware and produces a stabilized waste product. The system comprises an apparatus or device (V) for separating components of a fluid ( 15 ′) comprising a container ( 5 ′) having at least one separation or filtration member ( 10 ′) capable of selectively separating or filtering at least one component from the fluid, and a superabsorbent material ( 20 ′) capable of absorbing the at least one component separated from the fluid, and thereby providing a processed fluid free or substantially free of said at least one component; and agitation means.

First claim

The invention claimed is:

1. An apparatus for processing blood into a blood cell concentrate, the apparatus comprising:
a permeable membrane defining, within it, an inner compartment, wherein the permeable membrane has an effective pore size of 0.2-8 μm and is capable of allowing water, salts, and proteins to pass through the permeable membrane;
a container comprising a substantially transparent portion, the container surrounding the permeable membrane and the inner compartment, the container defining an outer compartment between the permeable membrane and the container into which blood is initially received;
an inlet in the container for introducing blood into the outer compartment of the container;
an outlet in the outer compartment of the container distant from the inlet; and
a valve or seal on the inlet and the outlet which permits and prevents selective entry and discharge of material to and from the outer compartment of the container and has a flow control system to prevent blood flow from escaping from the container; and
a superabsorbent material surrounded by the permeable membrane, wherein the superabsorbent material expands as the superabsorbent material absorbs water, salts, and proteins removed from the blood which have passed through the permeable membrane, thereby leaving a blood cell concentrate in the outer compartment.

2. The apparatus of claim 1 , wherein the apparatus is capable of reducing the volume of the blood by at least 20%.

3. The apparatus of claim 1 , wherein the superabsorbent material is impregnated in a support material.

4. The apparatus of claim 3 , wherein the support material impregnated with the superabsorbent material comprises a cellulosic material or a polyester material.

5. The apparatus of claim 1 , wherein the container is in the form of a flexible pouch.

6. The apparatus of claim 1 , wherein the permeable membrane is made from a polymeric material.

7. The apparatus of claim 1 , wherein the superabsorbent material is made from a superabsorbent polymer.

8. A system for processing blood into a blood cell concentrate comprising:
the apparatus of claim 1 and
an agitation means.

9. The system of claim 8 , wherein the agitation means comprises an orbital shaker.

10. A method for processing blood into a blood cell concentrate comprising:
providing the apparatus of claim 1 ;
introducing blood, containing water, salts, and proteins, via the inlet, into the container;
passing the water, salts, and proteins through the permeable membrane into the inner compartment and leaving a blood cell concentrate in the outer compartment;
absorbing the water, salts, and proteins in the superabsorbent material; and
recovering the blood cell concentrate from the outer compartment via the outlet.

11. The method of claim 10 further comprising:
agitating the apparatus.

12. The apparatus of claim 1 , wherein the superabsorbent material precludes the requirement of external force to separate the water, salts, and proteins to be moved from the blood.

13. The apparatus of claim 1 , wherein the inlet comprises a means for feeding fluid into the container.

14. The apparatus of claim 1 , wherein the permeable membrane defines the shape and size of the container.

15. The apparatus of claim 1 , wherein the transparent portion comprises a vertical strip.

16. The apparatus of claim 1 , wherein the transparent portion comprises a means to measure the volume of blood in the apparatus.

17. The apparatus of claim 1 , wherein the superabsorbent material forms a stable gel upon absorption of the water, salts, and proteins removed from the blood.

18. The apparatus of claim 1 further comprising:
a covering portion.

19. The apparatus of claim 1 further comprising:
a further processing means.

20. The apparatus of claim 19 , wherein the further processing means is a filter.

21. The method of claim 10 , wherein the flow control system provides a controlled rate at which the blood escapes from the container.

Assignees

• Gourlay Terence
• Univ Strathclyde

Inventors

• Gourlay Terence

Classifications

• A61M1/3679

  by absorption (A61M1/3675 takes precedence) · CPC title

• A61M1/3475

  with filtrate treatment agent in the same enclosure as the membrane · CPC title

• A61M1/3472 Primary

  with treatment of the filtrate · CPC title