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专利名称：Method and apparatus for processing blood发明人：Herbert M. Cullis,James H. DeVries,David A.
Lohr,Rodolfo R. Rodriquez,Michael B. Uffer
申请号：US05/843222申请日：19771018公开号：US04185629A公开日：19800129
摘要：The blood processing method, and the apparatus for performing the steps ofthe method are utilized in separating whole blood into its components and include thesteps of, or component parts of the apparatus for carrying out these steps of: pumpingwhole blood from a donor; passing the whole blood through a first chamber in acentrifuge device: centrifuging the whole blood in the centrifuge device to cause
sedimentation of red blood cells from the whole blood in, and separation of platelet richplasma from the whole blood in, the first chamber; pumping the separated platelet richplasma from the first chamber and out of the centrifuge device where it is monitored andthen back into the centrifuge device and through a second chamber in the centrifugedevice where the platelet rich plasma is centrifuged to cause sedimentation of theplatelets therein while passing the remaining blood fluid though the first chamber andback to the donor; recombining the plasma passed through the second chamber with theblood fluid passed through the first chamber for return to the donor; monitoring theplatelet rich plasma outisde of the centrifuge device and sensing the presence of redblood cells in the platelet rich plasma; stopping and then reversing movement of theplatelet rich plasma mixed with red blood cells when a mixture is sensed to return the
mixture of platelet rich plasma mixed with red blood cells to the first chamber forseparation of the blood components; adjusting the difference in volumetric flow rates ofthe pump for the whole blood pump and the pump for platelet rich plasma in responseto the sensing of red blood cells; repeating the above steps until a desired volume ofwhole blood has been processed, and stopping operation of the centrifuge device andremoving the second chamber with platelets therein from the apparatus.
申请人：BAXTER TRAVENOL LABS INC
代理人：Henry W. Collins,Paul Flattery,Thomas R. Vigil
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