Patent ID: 6730055
Filing Date: 2004-05-04
Classification: A61M

Abstract:
A method for extracorporeal separation and collection of blood components from a donor/patient, comprising:flowing blood into a centrifugal dual stage blood processing vessel, said processing vessel including a first stage and a second stage, the second stage being separated from said first stage by a dam, a blood inlet for communicating blood into the first stage, a plasma outlet disposed in the second stage and a red blood cell outlet disposed in the first stage; centrifugally separating the blood into separated blood components including; separating plasma from said blood within said centrifugal dual stage blood processing vessel to establish separated plasma, whereby a portion of the separated plasma flows over the dam in the processing vessel to the plasma outlet in the second stage of the processing vessel; separating red blood cells from said blood within said centrifugal dual stage blood processing vessel to establish separated red blood cells whereby the separated red blood cells remain in the first stage of the processing vessel and flow to the red blood cell outlet; establishing a pre-determined packing factor for the separated red blood cells within said blood processing vessel; collecting at least a portion of at least one separated blood component including; collecting as a double red blood cell product at least a portion of said separated red blood cells in a red blood cell collection reservoir separate from said blood processing vessel to establish collected red blood cells.