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AssigneeRoche Diagnostics Operations, Inc.
InventorsRainer Jaeggi, Patrick Griss, Hans-Peter Wahl
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A device and method thereof for at least partially fractioning or separating fluid from higher density and/or solid particles contained in liquid samples are disclosed. The present invention provides a movable or drivable device having a flow path defined by inner and outer wall surfaces and arranged such that the flow velocity of the liquid sample along the outer wall surface is higher than the flow velocity along the opposite inner wall surface. The flow path provides elements to at least delay the flow of the liquid sample along the outer wall surface. The device is, e.g., suitable for the separation of blood, e.g., of plasma from at least red blood cells, and from red and white blood cells to achieve blood plasma with high purity for analytical reasons.
A device for at least partially separating fluid from higher density and/or solid particles contained in a liquid sample, the device comprising a moveable body about an axis of rotation, the body providing at least one flow path for the liquid sample, the flow path having an outer wall surface and an opposed inner wall surface, the inner wall surface being located closer to the axis of rotation than the outer wall surface, wherein the outer and inner wall surfaces are configured such that, when moving the body about the axis of rotation, flow velocity of the liquid sample along the outer wall surface is higher than the flow velocity along the inner wall surface, and the flow path further provides elements to at least delay the flow of the liquid sample at least along the outer wall surface.
A method for at least partially separating fluid from higher density and/or solid particles contained in a liquid sample, the method comprising:
Dependencies are inferred from the claim text.