Blood collection systems and methods that derive estimated effects upon the donor's blood volume and hematocrit

Abstract

Blood processing systems and methods convey blood drawn from a donor through a blood processing circuit to separate the blood into at least one targeted blood component for collection. The systems and methods derive an estimated effect of the procedure upon the donor. The estimated effect can be expressed in terms of a net blood fluid volume loss, or as a hematocrit of the donor after completion of the desired blood collection procedure. The systems and methods present the estimated effect to an operator for viewing, reading, or offloading.

We claim:  
     
         1 . A blood processing system comprising 
 a blood processing circuit including an element to separate blood drawn from a donor into at least one targeted blood component and a container to collect a volume of the targeted blood component,    a controller to convey blood through the blood processing circuit to perform a desired blood collection procedure and including a processing function to derive an estimated effect of the procedure upon the donor in terms of a net blood fluid volume loss, and    an output to present the estimated effect to an operator.