Method and apparatus for leukoreduction of red blood cells
View Patent ↗A method and apparatus for red blood collection and filtration is provided wherein a red blood cell collection assembly provides for leukoreduction filtration concurrent with or soon after the red blood cell collection procedure. The procedure preferably involves filtering the separated red blood cells in a high hematocrit (high-crit) state prior to addition of storage solution thereto. Preferably, a storage solution is passed through the leukoreduction filter after the RBCs have been filtered therethrough. The red blood cell collection filtration and storage assembly is preferably preconnected to a blood component separation disposable assembly, including, for example, a centrifuge vessel and a blood removal/return assembly for removing blood from a donor, passing the blood to the centrifuge vessel for separation of the blood into components for collection and providing for filtration of the separated red blood cell component, as described.
1. A disposable red blood cell collection assembly for an apheresis system for separating blood into at least one high hematocrit red blood cell component for collection and for the leukoreduction of the high hematocrit red blood cell component;
said disposable assembly comprising:
a blood removal/return assembly for removing blood from and returning any uncollected components to the donor;
a blood processing vessel connected to said blood removal/return assembly, and adaptable to be connected to a separation system for separating blood received from the donor into blood components including the high hematocrit red blood cell component;
an intermediate red blood cell collection bag disparate from yet preconnected via tubing lines to the blood processing vessel;
an openable conduit connected to the intermediate red blood cell collection bag and adapted to be connected to a source of additive solution;
an ultimate red blood cell collection container;
a preconnected leukoreduction filter fluidly disposed between the intermediate red blood cell collection bag and the ultimate red blood cell collection container;
whereby said red blood cell collection assembly is adapted to provide for the passing of undiluted high hematocrit red blood cells from the intermediate red blood cell collection bag through the leukoreduction filter and into the ultimate red blood cell collection container prior to the opening of the openable conduit; and
an air removal bag interconnected to the ultimate red blood cell collection container for receiving air from the ultimate red blood cell collection container; and
wherein the undiluted high hematocrit red blood cells are passed from the intermediate red blood cell collection bag through the leukoreduction filter and into the ultimate red blood cell collection container substantially simultaneously with or during the overall separation process.