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Principle of operation LoRRca

In order to evaluate the flowing capacity of blood in different parts of the body it is important to have a technique available for the accurate measurement of Red Blood Cell (RBC) properties.

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The LoRRca MaxSis is therefore an indispensable instrument. It uses a Couette geometry with a static BOB and a rotating cylinder (CUP) to create a simple shear flow.

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Cell deformability

A thin layer of red blood cell suspension is sheared between two concentric cylinders. The rotation of the outer cylinder (CUP), causes deformation (elongation) of the red blood cells. The laser beam diffraction pattern is detected with a video camera and analyzed by a computer.

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Cell aggregation

Various aggregation indices are determined in whole blood by means of reflection measurements. A laser diode, mounted in the BOB, serves as light source. The reflected light is sensed by a photodiode.

See Also

General measurements description

Types of measurements
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