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Publication Number
US-12263491-B2
Publication Date
2025-04-01
Expiration Date
Abstract
A device for separating blood into a plurality of blood components by centrifugal force includes a first chamber for receiving a blood bag filled with blood to be separated. Each separated blood component is located in a separate portion of the blood bag according to its specific weight. A second chamber receives at least one component bag to be filled with a blood component. The component bag has an inlet opening connected to an outlet opening of the blood bag by a line that has a controllable valve. A displacement body in the first chamber exerts a pressing force onto the blood bag. A control unit opens the valve until a blood component passes into the component bag as a result of the pressing force. The displacement body generates the pressing force with the aid of the centrifugal force and/or with the aid of a spring force.
Core Innovation
The invention provides a blood separation device for separating blood into a plurality of blood components by centrifugal force generated during a centrifuging process in a centrifuge. A first chamber receives a blood bag filled with blood, where after completion of a first phase the blood components are located in separate sections of the blood bag according to their specific weight in the direction of the centrifugal force. A second chamber receives at least one component bag for filling with one of the plurality of blood components.
The device transfers components from the blood bag to the component bag during a second phase by using a line with an inlet opening in the component bag connected via an outlet opening of the blood bag. A controllable valve is arranged in the line, and the transfer is initiated by a displacement body arranged in the first chamber that exerts a pressing force onto the blood bag directed substantially perpendicular to the direction of the centrifugal force. The displacement body is shaped to generate the pressing force by the centrifugal force and/or by a spring force.
A control unit opens the controllable valve during the second phase of the centrifuging process until said one of the plurality of blood components has passed into the at least one component bag as a result of the pressing force of the displacement body. Remote bidirectional wireless control is described as being used to set and/or trigger the transfer.
Claims Coverage
The document includes one independent claim defining the overall blood separation device and the controlled second-phase transfer of separated blood components into component bags. The remaining dependent claims refine the independent claim with additional structural and control features.
Centrifugal force blood separation into separate bag sections
A first chamber for receiving a blood bag filled with blood, the blood separating into a plurality of blood components by centrifugal force so that each blood component is located in a separate section of the blood bag after completion of a first phase.
Two-chamber component bag filling with controlled line
A second chamber for receiving at least one component bag, the component bag comprising an inlet opening connected to an outlet opening of the blood bag via a line in which a controllable valve is arranged.
Displacement body presses blood bag perpendicular to centrifugal force
A displacement body arranged in the first chamber and exerting a pressing force onto the blood bag directed substantially perpendicular to the direction of the centrifugal force, wherein the displacement body is shaped to generate the pressing force by the centrifugal force and/or by a spring force.
Second-phase valve opening controlled by transfer completion
A control unit which during a second phase of the centrifuging process opens the controllable valve until said one of the plurality of blood components has passed into the at least one component bag as a result of the pressing force of the displacement body.
The core coverage combines centrifugal-force separation in distinct blood-bag sections during a first phase with a displacement-body-driven, valve-controlled second-phase transfer into one or more component bags, where the pressing force is generated by centrifugal force and/or spring force and valve opening continues until the specified component has passed.
Stated Advantages
Reduced mixing and fewer working steps by having components already separated in separate containers when centrifugation stops.
Documented Applications
Separating blood into a plurality of blood components using a centrifuge and transferring selected components into at least one component bag during a second phase.
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