An apparatus, a system and a method relating to hemodialysis, hemodiafiltration, hemofiltration or peritoneal dialysis

摘要

The invention relates to an apparatus for hemodialysis, hemodiafiltration, hemofiltration or peritoneal dialysis. The apparatus comprises at least one conduit ( 10, 14 ) in which a dialysis and/or infusion fluid is intended to flow. The apparatus has a measurement unit ( 48 ) for measuring at least one optically active substance in the fluid. The measurement unit ( 48 ) is arranged to measure the concentration of the substance in said fluid by measuring the influence said substance in the fluid has on a polarized beam of light which is transmitted through said fluid. The invention also concerns a system including such an apparatus as well as a method of carrying out a measurement of the concentration of an optically active substance in a dialysis and/or infusion fluid.