Patent ID: 8070666

Claim:
Disposable device for centrifugation of blood, used for separating or also washing constituents of the blood, and comprising: a centrifugation chamber with an axis of revolution and with an opening through which the axis extends, wherein said opening is formed in an upper part of said centrifugation chamber, means that guide the rotation of said centrifugation chamber and that are designed to engage with the centrifugation chamber against a tread, means for driving this centrifugation chamber in rotation about its axis of revolution, at least one static member for admission/evacuation which is engaged in said centrifugation chamber via the opening thereof and which comprises at least one inlet channel for said blood and at least one outlet channel for a constituent of said blood, wherein said static member for admission/evacuation comprises at least one admission channel which is provided for a pressurized gaseous fluid and which opens out inside the centrifugation chamber, and a gap is formed in said opening between the centrifugation chamber and the static member for admission/evacuation, in order to allow said gaseous fluid to escape from the centrifugation chamber, wherein the centrifugation chamber and/or the static member for admission/evacuation slides along the axis of revolution between a position in which the gap is closed and a position in which the gap is open.