Cellular component concentrator and filter apparatus and method of use thereof

Patent metadata

Field	Value
Publication number	US-11534774-B2
Application number	US-201615554889-A
Country	US
Kind code	B2
Filing date	Mar 10, 2016
Priority date	Mar 10, 2015
Publication date	Dec 27, 2022
Grant date	Dec 27, 2022

Abstract

The present disclosure describes a disc-like apparatus and method of its use allowing for the one-step concentration and separation of therapeutic factors found in mammalian body fluid.

First claim

What is claimed is:

1. A concentrator apparatus comprising:
(a) a disc having a top plate, a bottom plate, and an outside wall, wherein:
(i) the top plate, bottom plate, and outside wall all have an inner surface and an outer surface;
(ii) the outside wall connects the top and bottom plates; and
(iii) the inner surface of the top plate and the inner surface of the bottom plate face one other;

(b) a compartment enclosed by the inner surfaces of the top plate, bottom plate, and outside wall;
(c) at least one filter element or membrane, comprising an inside edge and an outside edge, wherein the at least one filter element or membrane is located inside the compartment, wherein the at least one filter element or membrane is circular in shape, continuous, and encircles a body fluid reservoir;
(d) the body fluid reservoir surrounded by the inside edge of the at least one filter element or membrane; and
(e) an effluent collection reservoir located between the outside edge of the at least one filter element or membrane and the inner surface of the outside wall.

2. The concentrator apparatus of claim 1 , further comprising at least one attachment point for a centrifuge.

3. The concentrator apparatus of claim 1 , wherein the top plate of the concentrator apparatus comprises at least one filter element or membrane holder on the inner surface of the top plate, on the inner surface of the bottom plate, or both the inner surface of the top plate and the inner surface of the bottom plate.

4. The concentrator apparatus of claim 1 , wherein the top plate, bottom plate, or both the top and bottom plates are permanently attached to the outside wall of the concentrator apparatus.

5. The concentrator apparatus of claim 1 , wherein the top plate, bottom plate, or the top plate and bottom plate can be separated from the concentrator apparatus.

6. The concentrator apparatus of claim 1 , wherein the at least one filter element or membrane comprises pores.

7. The concentrator apparatus of claim 1 , wherein the at least one filter element or membrane comprises:
(a) a network of one or more nanofibers, a nanofibrillar structure, glass, silicon, polymeric membranes, or combinations thereof, wherein the one or more nanofibers, a nanofibrillar structure, glass, silicon, polymeric membranes comprise macropores, nanopores, polymer scaffold, or combinations thereof; or
b) polyethersulfone, polyvinylidene fluoride, or mixed cellulose esters;
or (c) combinations thereof.

8. The concentrator apparatus of claim 1 , wherein the body fluid reservoir comprises a scaffolding device.

9. The concentrator apparatus of claim 8 , wherein the scaffolding device comprises one or more of beads, spheres, gels, wool, powder, granules, or particles.

10. The concentrator apparatus of claim 8 , wherein the scaffolding device comprises allograph tissue, autograph tissue, or xenograph tissue.

11. The concentrator apparatus of claim 1 , wherein the top plate, bottom plate, or both top plate and bottom plate comprise:
(a) one or more ports leading to the body fluid reservoir;
(b) one or more ports leading to the effluent collection reservoir; and
(c) a sealing element on the one or more ports.

12. A method of producing a therapeutic fluid from a mammalian body fluid having an increased concentration, amount, or both of therapeutic factors, the method comprising the steps of:
(a) subjecting the concentrator apparatus of claim 1 to centrifugation, wherein the concentrator apparatus comprises a mammalian body fluid; and
(b) removing a therapeutic fluid from the concentrator apparatus.

13. The method of claim 12 , wherein the step of centrifuging the concentrator apparatus comprising the body fluid comprises centrifuging at a gravitation force of substantially 1×g to substantially 600,000×g for substantially 1 minute to substantially 60 minutes.

14. The method of claim 12 , wherein the concentrator apparatus comprises a scaffold device and the method further comprises a step of incubating the body fluid in the concentrator apparatus for a sufficient time and at a sufficient temperature to allow for expansion or increase in the therapeutic factors, wherein the incubation step occurs after the step of injecting the body fluid into the concentrator apparatus, but before the step of centrifuging the concentrator apparatus.

15. The method of claim 14 , wherein the incubation temperature is at substantially 20° to substantially 44° C.

16. The method of claim 14 , wherein the method further comprises a step of treating a patient with the therapeutic fluid removed from the concentrator apparatus.

17. The method of claim 12 , wherein the therapeutic factors comprise Interleukin-1 receptor antagonist (IL-1ra), thrombin, fibrinogen, alpha-2 macroglobulin, or combinations thereof.

18. The concentrator apparatus of claim 1 , wherein the outer surface of the outside wall comprises attachment points for a centrifuge rotor, wherein the attachment points are in the form of notches, fingers, gear teeth, or cogs.

19. The concentrator apparatus of claim 1 , wherein the inner surface of the top plate, the inner surface of the bottom plate, or both the inner surface of the top plate and the inner surface of the bottom plate comprise struts for holding the at least one filter element or membrane in place.

Assignees

• Arthrex Inc

Inventors

• Bare Christopher M
• Harrison Iv Robert M
• Tucker Melissa S
• Nabors Abigail

Classifications

• B01L2400/0409

  centrifugal forces · CPC title

• B01L2300/0681

  Filter · CPC title

• B01L3/502 Primary

  with fluid transport, e.g. in multi-compartment structures · CPC title

• B01L2300/0803

  Disc shape · CPC title

• B04B11/04

  Periodical feeding or discharging; Control arrangements therefor · CPC title