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Method and apparatus for the automatic control of a blood centrifuge
| Details |
Inventors: Zanella, Andrea; Belloni, Massimo; Comai, Guido; Panzani, Ivo;
Assignee: Dideco S.p.A. (IT)
Primary Examiner: Cooley; Charles E.
Assistant Examiner:
Attorney, Agent or Firm: Popovich & Wiles, P.A.
A method and an apparatus for the automatic control of a blood centrifuge, including a controller that processes four input values and two output parameters. The four input values include the hematocrit value of the input blood, the volume of the red cells present in the centrifuge, the filling level of the centrifuge, and, selectively, the hematocrit value for collected blood at the end of the filling step and the time required for the filling step. The two output parameters include the flow rate of the blood into the centrifuge and either the time required for the filling step (when the hematocrit value is provided as input) or the predicted hematocrit value (when the time for the filling step is provided as input). |
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DETAILED DESCRIPTION The aim of the present invention is to provide an apparatus and a method for the automatic control of a blood centrifuge.
More particularly, the present invention provides a system for controlling the flow rate of the blood fed into the centrifuge.
The system is capable of obtaining a specific hematocrit value for the collected blood with a forecast of the time required for the centrifugation procedure.
Alternatively, the system is capable of ensuring completion of the operation in a very specific time with a forecast of the hematocrit value collected blood at the end of the procedure.
In one aspect, this invention is a method for the automatic control of a blood centrifuge wherein blood is added to the centrifuge in a filling step and red blood cells are separated from the blood in a settling process the method comprising providing a blood centrifuge, a blood pump for communicating blood to the centrifuge and a controller configured to receive data and to produce at least one output; providing first input data to the controller indicative of a selected output parameter comprising one of a desired hematocrit value for blood after completion of the filling step and a desired time required to complete the filling step; providing second input data to the controller indicative of a hematocrit value of blood entering the blood centrifuge; providing third input data indicative of a level of packed red blood cells in the blood centrifuge to the controller; providing fourth input data to the controller indicative of a volume of red blood cells in the centrifuge; and processing the first, second, third and fourth input data in the controller to produce a first output for controlling blood flow rate through the pump during the filling step.
The first, second, third and fourth input data in the controller may be processed to produce a second output comprising one of an output indicative of time required for completion of the filling step, if the first input data is a desired hematocrit value for blood after the filling step, and an output indicative of the hematocrit value at the end of the filling step, if the first input data is a desired time for completing the filling step
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Liquid Purification 
