System and method for optimized apheresis draw and return
AssigneeHaemonetics Corporation
InventorsEtienne Pagès, Michael Ragusa
Life of this patent
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Abstract
A blood processing device includes a venous-access device, a blood component separation device, a return line, a draw line, a first pressure sensor, a second pressure sensor, and a first pump. The first pressure sensor is located on the return line between the blood component separation device and the venous-access device, and determines a first pressure. The second pressure sensor is located on the draw line between the blood component separation device and the venous-access device, and determines a second pressure. The first pump is connected to at least one of the return line and the draw line and controls a flow rate within the connected line based on a subject access pressure determined based upon the first and second pressures.
Claims18
A blood processing device for collecting and exchanging blood components comprising:
- a single needle venous-access device for drawing whole blood from a subject and returning unused blood components to the subject;
- a blood component separation device for separating the drawn whole blood into a first blood component and a second blood component, the blood component separation device configured to send the second blood component to a second blood component storage container;
- a return line fluidly connected to the single needle venous-access device and the blood component separation device for returning the first blood component to the subject;
- a draw line fluidly connected to the single needle venous-access device and the blood component separation device for drawing whole blood from the subject and into the blood component separation device
- a first pressure sensor located on the return line between the blood component separation device and the single needle venous-access device for determining a first pressure;
- a second pressure sensor located on the draw line between the blood component separation device and the single needle venous-access device for determining a second pressure;
- and
- a first pump connected to at least one of the return line and the draw line for controlling a flow rate within the connected line, the pump controlling the flow rate based on a pressure at the single needle venous access device and determined based on the first pressure and the second pressure.
Dependencies are inferred from the claim text.