As blood flows through the V-PET system, platelets are selectively
captured on the surface of the filter through a complex
interaction of size exclusion and adsorption, while the majority
of red cells pass through. The platelet concentrate is then
recovered by back-flushing the filter with a harvest solution.
Filter performance
The system provides a 3x concentration of platelets (PLT)
and their associated growth factors, and a 2x concentration
of white blood cells (WBC), some of which are stem cells,
from 55 mL of the patient’s own blood for use as a cell therapy.
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