Automation of plasma sequestration
January 21, 2014. 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 References 3655123 Centrifugal liquid processing system Method and apparatus for separating whole blood into its components and for automatically collecting one component Pheresis apparatus Pressure cuff draw mode enhancement system and method for a single needle blood fractionation system Method of separating blood components Blood separation system Bottom blood bag separation system Centrifuge drum for concentrating suspended solids Method and apparatus for the separation of blood into its components InventorAssigneeApplicationNo. 185487 filed on 01/21/1994US Classes:494/1, WITH CONDITION RESPONSIVE MEANS494/10, WITH MEANS FOR INDICATING, INSPECTING, MEASURING, SIGNALING OR TESTING604/6.04PlasmaExaminersPrimary: Scherbel, David A.Assistant: Till, Terrence R. Attorney, Agent or FirmForeign Patent References
International ClassesB04B 009/10A61M 001/36 AbstractA plasma sequestration system having a volume control system is provided. When a calculated volume of whole blood has been processed, the system switches from a fill to an empty cycle. The termination point is calculated in advance, based on the desired composition of the collected plasma, thus improving process control and product uniformity. The system is automated or partially automated using an optical sensor or marker to monitor the volume of packed red blood cells. When the red cells reach the marker or sensor, a signal is sent to the control system which then calculates the required fill volume. Processing continues until the calculated fill volume is reached, at which time the system automatically stops the collection cycle. The system also provides for two speed operation of the centrifuge as a safeguard against foaming which may result in aerosol formation and blood trauma. Foaming is reduced by reducing centrifuge speed as the packed red blood cells approach the stationary deflector in the centrifuge bowl.Other References
Field of SearchIncluding centrifugeUtilizing a centrifuge or compartmented rotor Liberation or purification of sample or separation of material from a sample (e.g., filtering, centrifuging, etc.) WITH CONDITION RESPONSIVE MEANS WITH MEANS FOR INDICATING, INSPECTING, MEASURING, SIGNALING OR TESTING INCLUDING PLURALITY OF MINIATURE BOWLS (E.G., TEST TUBES) DISTRUBUTED ABOUT ROTATABLE CARRIER AND READILY REMOVABLE THEREFROM Including conduit of flexible umbilical cable type Comprising flexible bowls embraced by pockets provided therefor in carrier | |
