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.
Claims12
A method of collecting and exchanging blood components using blood processing equipment comprising:
- inserting a venous-access device into a subject, the venous-access device fluidly connected to a blood separation device;
- withdrawing blood from the subject such that the drawn blood is collected in a the blood component separation device for processing;
- separating the withdrawn blood into a first blood component and a second blood component using the blood component separation device;
- extracting the second blood component from the blood component separation device;
- returning the first blood component to the subject through a draw/return line;
- measuring a first pressure within the draw/return line using a first pressure sensor, the first pressure sensor being located on the draw/return line between the venous-access device and the blood component separation device;
- measuring a second pressure within the draw/return line using a second pressure sensor, the second pressure sensor being located on the draw/return line between the venous-access device and the first pressure sensor;
- and
- controlling a flow rate within the draw/return fluid line based on a subject access pressure determined using the first pressure and the second pressure.
Dependencies are inferred from the claim text.