Abstract:
Systems and methods separate blood cells from whole blood and pump the separated blood cells through an in-line leukofilter to a blood cell storage container. The leukofilter comprises a filtration medium enclosed within a flexible housing. The systems and methods include a fixture to restrain expansion of the flexible filter housing during operation of the pump. The fixture includes a bracket to enable its releasable attachment to the blood processing device employed to carry out the separation process.
Abstract:
A drip chamber (506) includes a cap (510) that extends the field of view of a droplet in a vertical direction above the plane of the droplet, as well as horizontally in the plane of the droplet. The drip chamber has a deformable body and an interior volume to accommodate manual air purging and priming by squeezing the body.
Abstract:
A pneumatic pump manifold disposable system, configured as a cassette, is used for the purpose of red cell and plasma apheresis. The cassette integrates a separation device, manifold system, macro-aggregate filter, and five pumping chambers for the purpose of separating plasma and red cells from the whole blood. The cassette system, with the separation device directly attached without tubing, simplifies the loading of the disposable set into the hardware, and reduces the manufacturing complexity of the set. The system allows for plasma, plasma and red cells, or just red cells to be stored in long term storage containers after a procedure.
Abstract:
A blood separation system (10) is described. The system comprises a device (14, 18) which, in use, operates to separate whole blood into red blood cells and plasma, a whole blood inlet line (290) for conveying a flow of whole blood into the device, a plasma collection line (292) for conveying a flow of plasma from the device, and a red blood cell collection line (294) for conveying a flow of red blood cells from the device. A first sensing assembly (334) including a first sensor in the plasma collection line is provided which in use operates to detect a characteristic of plasma in the flow of plasma and to generate a first output. A second sensing assembly (336) including a second sensor in the red blood cell collection line is provided which in use operates to detect a characteristic of red blood cells in the flow of red blood cells and to generate a second output. A controller (16) operates to control flows in the plasma collection line and the red blood cell collection line based upon the first and second outputs.
Abstract:
A multiple function pump station (PPN) performs different on-line processing tasks. The pump station can be operated in one mode to draw blood from a donor and can in another mode be operated to return blood to the donor. The pump station used to draw blood from a donor can also be used to perform subsequent blood processing tasks, such as mixing processing or additive fluids with the blood, or transferring a harvested blood component to a storage container, or finishing the processing of a harvested blood component, e.g., by passage through a filter (200) to remove leukocytes.
Abstract:
A disposable tubing set (10) having an array of flexible tubing and a method for holding an array of flexible tubing. The disposable tubing set has a frame (36) for holding segments (38) of the tubing. The frame (36) includes at least two sides and a plurality of apertures defined in the sides. Segments (38) of the tubing extend through and are completely enclosed by the apertures.
Abstract:
Blood processing systems and methods employ two sensors (334, 336), one (334) to detect a condition of plasma exiting a separation device (18) and another sensor (336) to detect a condition of a cellular component exiting the separation device (18). The first sensor (334) detects, e.g., contamination of the plasma due to the presence of unwanted cellular components. The second sensor (336) detects, e.g., dilution of the cellular component due to presence of plasma. Blood processing parameters are carried out based, at least in part, by conditions detected by one or both of the sensors (334, 336).
Abstract:
Programmable, fluid pressure actuated blood processing systems (10) and methods are used in association with a blood separation device (18). The systems and methods employ a cassette (28), which contains several preformed, pneumatically actuated pump stations (PP1-PP4), several preformed fluid flow paths (F1-F38), and several preformed, pneumatically actuated (VA1-VA23) valves (1-23) in the fluid flow paths. The systems and methods also employ progr ammable pneumatic actuators (PA1-PA4) to hold the cassette and selectively apply pneumatic force to the valves and the pump stations.
Abstract:
A blood separation system (10) is described. The system comprises a device (14, 18) which, in use, operates to separate whole blood into red blood cells and plasma, a whole blood inlet line (290) for conveying a flow of whole blood into the device, a plasma collection line (292) for conveying a flow of plasma from the device, and a red blood cell collection line (294) for conveying a flow of red blood cells from the device. A first sensing assembly (334) including a first sensor in the plasma collection line is provided which in use operates to detect a characteristic of plasma in the flow of plasma and to generate a first output. A second sensing assembly (336) including a second sensor in the red blood cell collection line is provided which in use operates to detect a characteristic of red blood cells in the flow of red blood cells and to generate a second output. A controller (16) operates to control flows in the plasma collection line and the red blood cell collection line based upon the first and second outputs.