Blood component separator disk
AssigneeHarvest Technologies Corporation
InventorsJames R. Ellsworth, Steven F. Levesque
Life of this patent
Estimating the term…
Abstract
A separator disk (4) for use in centrifugal separation of components is designed to automatically position itself during separation at the interface between the supernatant and the remaining components. Preferably the interface is between plasma and red blood cells.
Claims13
In combination, a tube comprising an inner wall forming a cavity adapted to contain a fluid to be subjected to centrifugation and a separator disk in said tube adapted to float freely in said fluid and separate components of said fluid having different specific gravities, said disk being made of a material having a specific gravity near the specific gravity of red blood cells and comprising a peripheral portion adjacent said inner wall of said tube and a central portion extending across at least a portion of said cavity, said central portion having an upper surface forming a closed recess configured such that after centrifugation of blood said closed recess lies just below an interface with separated red blood cells and accumulates a small layer of red blood cells.
In combination:
- a container forming a cavity extending along a longitudinal axis and configured to receive a fluid to be subjected to centrifugation, and
- a separator disk in said cavity configured to move freely in said cavity in the direction of said longitudinal axis during said centrifugation and comprising a central portion extending across said cavity transverse to said longitudinal direction, said central portion having a closed recess formed by raised inner and outer peripheral portions and a closed bottom between said portions that after centrifugation effectively separates a layer of said fluid just above said upper surface from fluid below said disk.
Dependencies are inferred from the claim text.