No- that's the opposite direction I was trying to describe. Not a closed loop system. Draw, treat, replace. Whole blood drawn into a bag as if you were donatin

No- that's the opposite direction I was trying to describe. Not a closed loop system. Draw, treat, replace. Whole blood drawn into a bag as if you were donating, then treated separately (maybe even sent to a lab), and then transfused back into the patient. The closed loop systems are what create a lot of the complication and expense. ECMO (or similar) definitely doesn't simplify anything.