Patent ID: 11890399
Assignee: FENWAL, INC.
Field: Medical technology (Instruments)
Classification: CPC A  B | IPC A  B

Claim 0:
1. A blood separation method comprising:
mounting a fluid flow circuit to a blood separation device including a centrifugal separator and a spinning membrane separator drive unit;
conveying blood through the fluid flow circuit;
separating red blood cells and a plasma constituent from at least a portion of the blood in the fluid flow circuit using the centrifugal separator; and
collecting a first portion of the separated red blood cells while conveying a first portion of the plasma constituent from the centrifugal separator into a container;
collecting a second portion of the separated red blood cells while conveying said first portion of the plasma constituent from the container to a recipient along with a second portion of the plasma constituent from the centrifugal separator that is not first conveyed into the container; and
after said first portion of the plasma constituent has been conveyed from the container to the recipient and the container has been emptied, collecting a third portion of the separated red blood cells and conveying a third portion of the plasma constituent from the centrifugal separator to the recipient without first being conveyed into the container, wherein the spinning membrane separator drive unit is not actuated when the blood is being conveyed through the fluid flow circuit, when the red blood cells and plasma constituent are being separated from said at least a portion of the blood in the fluid flow circuit, and when the separated red blood cells are being collected.