A cell counter and diagnostic device

Abstract

A cell counter and diagnostic device Disclosed is a device for determining a concentration of cells of a given size in a sample of 5 fluid, the sample comprising a plurality of cells, comprising: a light source arranged to emit light along a central axis to illuminate the plurality of cells in the fluid sample; a container to contain the sample; a detector arranged to receive light at a plurality of displacements from the central axis, the light having passed through the plurality of cells in the fluid sample, and to produce a plurality of signals, each associated with, and indicative of an intensity of the received light at, 10 a respective one of the plurality of displacements; and a processor arranged to: obtain a first light intensity reading at a first displacement from the central axis; obtain a second light intensity reading at a second displacement from the central axis; determine a difference between the first and second light intensity readings; determine the concentration of cells based on the difference; wherein the container is one of: an effluent line arranged to convey 15 effluent from a patient; an effluent bag arranged to collect effluent from a patient; and a cassette forming part of an automated peritoneal dialysis system. FIG. 9

Dependencies are inferred from the claim text.