Patent ID: 6582349
Filing Date: 2003-06-24
Classification: A61M,B01D,B04B

Abstract:
A blood processing system comprisinga rotating element, a processing chamber on the rotating element for common rotation with the rotating element, the processing chamber including a first compartment for receiving blood for centrifugal separation into components, the processing chamber also including a second compartment for receiving a ballast liquid free of blood, and a controller for the rotating element operable in a first mode (i) to draw a vacuum in the second compartment to remove residual air without introducing liquid into the second compartment, and (ii) after removal of the residual air and while the vacuum exists in the second compartment, to draw the ballast liquid free of blood into the second compartment, the controller being also operable in a second mode to convey blood into the first compartment for centrifugal separation into components while the ballast liquid free of blood counter-balances the first compartment during rotation on the rotating element.