Apparatus and method for separating and concentrating fluids containing multiple components

• US 8,163,184 B2
• Filed: 03/25/2011
• Issued: 04/24/2012
• Est. Priority Date: 05/24/2002
• Status: Expired due to Term

• Current Assignee: Biomet Manufacturing, LLC (Zimmer Biomet Holdings, Inc.)
• Original Assignee: Biomet Biologics LLC (Zimmer Biomet Holdings, Inc.)
• Inventors: Leach, Michael D., Woodell-May, Jennifer E., Higgins, Joel C., Miller, Brandon
• Primary Examiner(s): Reifsnyder, David A
• Application Number:
  US13/071,565
• Publication Number:
  US 20110168193A1
• Time in Patent Office: 396 Days
• Field of Search: 210/782, 210/789, 210/360.1, 210/380.1, 210/516, 422/72, 422/101, 422/527, 494/37, 494/43, 494/50, 494/57, 604/6.01, 604/6.05, 604/6.15, 604/218, 604/403
• US Class Current: 210/782
• CPC Class Codes: B01D 17/0217 by centrifugal force
• CPC Class Codes: B01L 1/52 Transportable laboratories; Field kits
• CPC Class Codes: B01L 2200/026 Fluid interfacing between devices or objects, e.g. connectors, inlet details
• CPC Class Codes: B01L 2400/0409 centrifugal forces
• CPC Class Codes: B01L 2400/0478 pistons
• CPC Class Codes: B01L 3/502 with fluid transport, e.g. in multi-compartment structures centrifugal-type cuvettes G01N21/07; analysis by separation into components G01N30/00; automatic analysers G01N35/00
• CPC Class Codes: B01L 3/5021 Test tubes specially adapted for centrifugation purposes centrifuges B04B5/04
• CPC Class Codes: B01L 3/50215 using a float to separate phases
• CPC Class Codes: G01N 33/491 by separating the blood components G01N15/05 takes precedence
• CPC Class Codes: Y10T 436/25375 Liberation or purification of sample or separation of material from a sample [e.g., filtering, centrifuging, etc.]

Abstract

An apparatus is disclosed that allows for separating and collecting a fraction of a sample. The apparatus, when used with a centrifuge, allows for the creation of at least three fractions in the apparatus. It also provides for a new method of extracting the buffy coat phase from a whole blood sample. A buoy system that may include a first buoy portion and a second buoy member operably interconnected may be used to form at least three fractions from a sample during a substantially single centrifugation process. Therefore, the separation of various fractions may be substantially quick and efficient.

Claims

1. A method enriching a scaffold for application relative to an anatomy, comprising:

obtaining a volume of a first whole material;

obtaining a volume of a second whole material that is different from the first whole material;

forming a first fraction of the first whole material;

forming a second fraction of the second whole material; and

applying at least one of the first fraction or the second fraction to the scaffold.

2. The method of claim 1, further comprising:

implanting the scaffold relative to the anatomy.

3. The method of claim 1, wherein obtaining a volume of a first whole material includes obtaining a selected volume of whole blood by withdrawing from the anatomy the selected volume of whole blood.

4. The method of claim 3, wherein withdrawing the volume of whole blood includes:

forming a pressure differential in a container;

interconnecting the container substantially directly with at least one of a vein or a vessel of the anatomy; and

and collecting the whole blood in the container.

5. The method of claim 1, wherein obtaining a volume of a second whole material includes obtaining a selected volume of bone marrow by aspirating the selected volume of a bone marrow from the anatomy.

6. The method of claim 1, wherein forming a first fraction of the first whole material and forming a second fraction of the second whole material includes:

positioning the obtained volume of the first whole material and the obtained volume of the second whole material in a container; and

applying a force to the container to form the first fraction of the first whole material and the second fraction of the second whole material, wherein each of the first fraction and the second fraction includes at least two portions.

7. The method of claim 6, wherein:

the container includes a separating member including a specific gravity substantially dependent upon at least one of the first fraction of the first whole material or the second fraction of the second whole material.

8. The method of claim 7, wherein applying the force to the container includes:

centrifuging the container to move the separating member to a selected position relative to the positioned volume of the first whole material or the positioned second whole material to substantially physically separate at least the first fraction or the second fraction.

9. The method of claim 1, wherein applying at least one of the first fraction or the second fraction to the scaffold includes at least one of spraying, painting, dipping, or combinations thereof.

10. The method of claim 1, further comprising positioning the scaffold relative to the anatomy with the applied at least one of the first fraction or the second fraction.

11. A method enriching a scaffold for application relative to an anatomy, comprising:

placing a first whole material and a second whole material in a container, where the second whole material is different from the first whole material;

centrifuging the container with the placed first whole material and placed second whole material to cause the first whole material to separate into at least a first fraction and a second fraction and the second whole material to separate into at least a third fraction and a fourth fraction;

wherein the second fraction and the fourth fraction have a substantially similar density.

12. The method of claim 11, wherein centrifuging the container further includes causing a separation member to move to an interface of a combination of the first fraction and the third fraction and a combination of the second fraction and the fourth fraction.

13. The method of claim 12, wherein the combination of the second fraction and the fourth fraction is below the combination of the first fraction and the third fraction.

14. The method of claim 13, further comprising:

withdrawing at least a portion of the combination of the second fraction and the fourth fraction.

15. The method of claim 14, further comprising:

applying at least a portion of the withdrawn portion of the combination of the second fraction and the fourth fraction to a scaffold.

16. The method of claim 15, further comprising:

implanting the scaffold with the applied portion of the combination of the second fraction and the fourth fraction into a patient.

17. The method of claim 15, further comprising:

providing a withdrawal passing port through the separation member to allow access to the combination of the second fraction and the fourth fraction while maintaining the combination of the first fraction and the third fraction within the container.

18. The method of claim 17, further comprising:

providing a centrifuge to spin the container including the first whole material and the second whole material to cause a separation of the first whole material into the first and second fraction and the second whole material into the third fraction and the fourth fraction.

19. The method of claim 17, further comprising:

providing an application device to apply a withdrawn selected volume of the combination of the second fraction and the fourth fraction to a scaffold.

20. A method of separating a material including comprising:

providing a container defining an internal volume;

positioning a separating member within the container, wherein the separating member includes a density to move to an interface of a first fraction and a second fraction of a first whole material and a third fraction and a fourth fraction of a second whole material, wherein the first whole material is different from the second whole material;

the separation member being provided to form a physical barrier between a combination of the first fraction and the third fraction and a combination of the second fraction and the fourth fraction.