Multi-Unit Blood Processor With Progressively Centered Chambers
An apparatus for separating at least two discrete volumes of a composite liquid into at least a first component and a second component, comprising a well provided on a rotor near the axis of rotation for receiving a relatively rare blood component, such as mesenchymal stem cells (MSC), or for receiving a fluid that can be used multiple times, such as a washing solution. The well is placed radially outwardly from the axis of rotation and radially inwardly from cavity, which receives bags containing blood or another biologic fluid. The well is placed in a low centrifugal force region relative to the position of the cavity.
1 . An apparatus for separating at least two discrete volumes of a composite liquid into at least a first component and a second component comprising
a centrifuge rotor adapted to rotate about a rotation axis,
at least one separation cell, adapted to receive a separation bag containing a volume of composite liquid, said separation bag being fluidly interconnected to a set of bags, said set comprising at least one component bag, at least one auxiliary bag, said separation cell being located radially outwardly from said axis of rotation in a high centrifugal force region,
at least one cavity for receiving said at least one component bag, said cavity being located radially outwardly from said axis of rotation and radially inwardly from said separation cell in an intermediate centrifugal force region,
a plurality of valves being placed radially inwardly from said cavity and adapted to engage tubes connecting said bags, and
a well for receiving said auxiliary bag, said well being placed radially outwardly from said axis of rotation and radially inwardly from said cavity in a low centrifugal force region relative to the position of said cavity.
2 . The apparatus of claim 1 wherein said well is closer to said axis of rotation than at least some of said valves.
3 . The apparatus of claim 1 wherein said well is rectangular.
4 . The apparatus of claim 1 wherein said well is cylindrical.
5 . The apparatus of claim 1 further comprising a plurality of separation cells, a plurality of cavities and a plurality of wells, wherein a separation cell, at least one cavity and a well are associated together as a processing set to receive a set of tubing-connected bags.
6 . The apparatus of claim 5 wherein said processing sets are symmetrically arranged around said axis of rotation.
7 . The apparatus of claim 6 wherein said rotor comprises a core supported by radially extending support arms, said support arms defining cavities between a separation cell and an adjacent set of valves.
8 . The apparatus of claim 6 wherein said wells are located in said core.