SYSTEMS AND METHODS FOR IDENTIFYING AND CONTROLLING INTERFACES BETWEEN BLOOD COMPONENTS

摘要

Systems and methods locate at least three spaced apart sensing units (24) in association with volume of blood comprising a first blood component interface region (16) between the first (14) and second (12) blood component regions. The systems and methods locate at least one of the sensing units (26) so that its optical field lies above the interface region (16) and at least one of the sensing units (26) so that its optical field lies below the interface region. Each sensing unit (26) senses the attenuation of energy emitted into blood in its optical field and generates a signal relating to the attenuation.