Method and apparatus for collecting biological materials
View Patent ↗A method and apparatus can separate and concentrate a selected component from a multi-component material. The multi-component material may include a whole sample such as adipose tissue, whole blood, or the like. The apparatus generally includes a moveable piston positioned within a separation container and a withdrawal tube that is operable to interact with a distal end of the collection container past the piston. Material can be withdrawn through the withdrawal tube.
1. A system to separate a component from a selected material, comprising:
a separation container extending between a proximal end and a distal end operable to contain the selected material;
a piston positioned in said separation container; and
a conduit positioned in said separation container operable to remove and/or deliver the selected material to said distal end of said separation container through said piston;
wherein said piston is configured to move along the conduit within the separation container.
2. The system of claim 1 , further comprising:
a centrifuge;
wherein said separation container is operable to be positioned in said centrifuge and said centrifuge is operable to spin said separation container.
3. The system of claim 1 , wherein said conduit includes a tube extending between a first end of said separation container and a second end of said separation container.
4. The system of claim 3 , wherein said conduit is accessible from an exterior of said separation container.
5. The system of claim 1 , further comprising:
an access port;
wherein said access port is operable to obtain access to an interior of said separation container.
6. The system of claim 5 , wherein said conduit extends from said access port.
7. The system of claim 1 , wherein said piston includes a density of about 1.00 grams per milliliter to about 1.10 grams per milliliter.
8. The system of claim 1 , wherein said piston includes a density less than the component.
9. The system of claim 1 , further comprising:
at least one of a collection system, a mixing system, an application system, a withdrawal system, or combinations thereof.
10. The system of claim 2 , wherein said centrifuge is operable to produce a force in said separation container to allow said piston to move relative to said separation container.
11. The system of claim 1 , further comprising:
a stop member;
wherein said stop member is operable to resist a motion of said piston relative to said separation container.
12. The system of claim 11 , wherein said stop member extends from said conduit.
13. The system of claim 1 , further comprising:
a top operable to substantially close said separation container to an exterior environment;
a port extending through said top;
wherein said conduit and said port operably interconnect to allow withdrawal of the component from a position on a side of the piston opposite the position of the top.
14. The system of claim 1 , wherein the separation container is operable to contain a biological material.
15. The system of claim 14 , wherein the separation container is operable to separate stromal cells from the biological material.
16. A system to separate a component from a selected material, comprising:
a separation container operable to contain the selected material;
a piston positioned in said separation container;
a conduit positioned in said separation container operable to remove and/or deliver the selected material to a distal end of said separation container through said piston; and
a stop member fixed within and extending transverse to a long axis of said separation container and into an interior of said separation container to engage said piston at a selected position within said separation container to resist a motion of said piston relative to said separation container during a centrifugal separation of the component.
17. The system of claim 16 , wherein said stop includes a surface extending from said conduit to engage said piston at a selected position within said separation container.
18. A system to separate a component from a selected material, comprising:
a separation container operable to contain the selected material between at least a proximal end and a distal end having a terminal end wall;
a piston positioned in said separation container;
a conduit positioned in said separation container operable to remove and/or deliver the selected material from the proximal end to the distal end of said separation container through said piston and between said piston and said terminal end wall at said distal end;
wherein said conduit is fixed at said proximal end and extends at least to said piston and said piston is configured to move along said conduit.
19. The system of claim 18 , further comprising:
a stop member fixed within and extending into an interior of said separation container to engage said piston at a selected position within said separation container to resist a motion of said piston relative to said separation container.
20. A system to separate a component from a selected material, comprising:
a separation container operable to contain the selected material;
a piston positioned in said separation container; and
a conduit positioned in said separation container operable to remove and/or deliver the selected material to a distal end of said separation container through said piston;
wherein said separation container is operable to be positioned in a centrifuge and said centrifuge is operable to spin said separation container and said piston is configured to move along said conduit during a separation of a material during centrifugation of the separation container.
21. The system of claim 20 , further comprising:
a centrifuge into which the separation container is configured to be placed to spin said separation container.