Method for creating a leukocyte rich sample from a mixed population of blood cells
July 8, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesVariable volume plasma treatment chamber for an apparatus for the extracorporeal treatment of disease Method for separation of blood components and apparatus thereof Pre-storage filtration of platelets Blood separation system Bottom blood bag separation system Platelets concentrate with low white blood cells content Blood collecting tube with blood factor antibodies as anticoagulant Method for processing blood for human transfusion Method for treating transition zone material Method and device for testing blood units for viral contamination Patent #: 5686238 InventorsAssigneeApplicationNo. 676988 filed on 07/08/1996US Classes:210/782, Blood210/787, Cyclonic, or centrifugal (e.g., whirling or helical motion or by vortex, etc.)210/806, Plural separating435/2, MAINTAINING BLOOD OR SPERM IN A PHYSIOLOGICALLY ACTIVE STATE OR COMPOSITIONS THEREOF OR THEREFOR OR METHODS OF IN VITRO BLOOD CELL SEPARATION OR TREATMENT436/177Liberation or purification of sample or separation of material from a sample (e.g., filtering, centrifuging, etc.)ExaminersPrimary: Kim, JohnAttorney, Agent or FirmInternational ClassB01D 021/26AbstractA method and apparatus for creating a leukocyte rich sample from a mixed population of blood cells. The method comprises the steps of: separating an amount of blood into layers that include a buffy coat layer having a mixed population of blood cells including plasma and red blood cells; providing a chamber having an opening for receiving a fluid; causing the buffy coat layer to enter the chamber; centrifuging the chamber to separate the buffy coat layer into at least a plasma containing layer, a leukocyte containing layer, and a red blood cell containing layer; and separating the leukocyte containing layer from the other layers in the chamber.Other References
Field of SearchBloodCyclonic, or centrifugal (e.g., whirling or helical motion or by vortex, etc.) Isolating layer Plural separating MAINTAINING BLOOD OR SPERM IN A PHYSIOLOGICALLY ACTIVE STATE OR COMPOSITIONS THEREOF OR THEREFOR OR METHODS OF IN VITRO BLOOD CELL SEPARATION OR TREATMENT Including centrifuge PROCESS Liberation or purification of sample or separation of material from a sample (e.g., filtering, centrifuging, etc.) Including use of a solid sorbent, semipermeable membrane, or liquid extraction Separation or purification |
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