Apparatus for the separation of blood components
AssigneeBecton, Dickinson and Company
InventorStephen B. Kessler
Life of this patent
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Abstract
An improved assembly for use in the centrifugal separation of serum or plasma from blood is disclosed. A tubular glass container has therein a body of gel-like material having a yield stress value such as to permit it to flow and form a transverse barrier between the separated phases of blood upon centrifugation. This container is provided with an hydrophobic inner surface portion adjacent to said barrier to enhance the adhesion of the barrier material to the container wall and inhibit leakage across the barrier of the separated blood components.
Claims9
An assembly for use in the centrifugal separation of heavy and light phases from blood, said assembly comprising:
- a blood container having therein a body of barrier material which is chemically and physically inert to the separated phases of blood and capable of forming a transverse barrier between the heavier and lighter phases of blood upon centrifugation, the portion of the inner surface of the container which is adjacent to the transverse barrier formed by the barrier material upon centrifugation being hydrophobic so as to provide an improved seal between the container surface and the barrier due to the adherence of said barrier material to said hydrophobic portion of said inner surface to ensure against migration across the barrier of separated blood phases.
An assembly for use in the centrifugal separation of heavy and light phases from blood, said assembly after centrifugation comprising:
- a. a tubular container having a glass body formed with an open end and a closed end;
- b. a closure hermetically sealing said open end;
- c. a transverse barrier between separated heavier and lighter phases of blood within the tubular container, said barrier being chemically and physically inert to the separated phases of blood;
- and
- d. a hydrophobic, water-insoluble coating fixed to the inner surface of the tubular container so as to prevent migration thereof along said surface, said coating being positioned adjacent said barrier such that an improved seal is provided between said separated phases of blood due to the adherence of said barrier material to said hydrophobic coating.
Dependencies are inferred from the claim text.