The storage of whole blood or packed red cells produces a considerable amount of microaggregates with sizes ranging from 20 to 200 μm in diameter.

They are mainly made of degenerated leukocytes and thrombocytes, red cells or other cellular fragments, fibrin, lipoproteins and denatured albumin precipitates.

microaggregate-filtersThe quantity and the sizes of these microaggregates are mainly correlated to the storage period.

Several authors state that the amount of microaggregates with size range of 40 μm and above represents 90% of the total microaggregates in the whole blood and about the 50% in the packed red cells.

Clinical trials demonstrated that a relationship existed between acute respiratory insufficiency and the presence of such microaggregates in pulmonary circulation of polytransfused patients.

In order to protect pulmonary microcirculation during blood transfusions, many authors consider it an absolute necessity to filter microaggregates larger than 40 μm in diameter.


  • Low priming volume: 35 ml
  • High filtration flow rate up to 2000 ml of whole blood
  • Easy debubbling
  • Completely transparent housing for easy visual inspection
  • High filtration efficiency levels:
    – microaggregates > 20 μm removal: > 95% (MICRO 20)
    – microaggregates > 40 μm removal: > 95% (MICRO 40)
  • Injection port (in the version with preconnected infusion set)
  • ETO sterilized
  • Maximum working pressure: 400 mmHg


  • Filters: monofilament polyester mesh


Goccia Micro 20


Goccia Micro 40