Systems and methods eradicating contaminants in fluids

Details Systems and methods eradicating contaminants in fluids Systems and methods eradicating contaminants in fluids

A - Human Necessities

61

L

A61L 2/08 (2006.01) A61L 2/00 (2006.01) A61M 1/36 (2006.01) B01J 19/12 (2006.01)

Patent

CA 2075640

A system (10) and method for treating a fluid carrying a contaminant to which a photoactive material has been bound include a treatment device (12) that defines a flow passage (36) with a dap (28). The system and method operate to establish a flow of fluid from the inlet (38) end of the gap (28) to the outlet end (40) of the, gap (28). The system and method also channel he flow of fluid in the gap (28) in succession through one or more paths. The system and method esta- blished at least two discrete sources of ra- diation (30), in the flow path (36) at spaced, apart locations along the direc- lion of fluid flow. At least one of the ra- diation sources (30) comprises a photodi- ode. The system and method further in- clude a control far operating each dis- crete source of radiation at a selected wavelength within the prescribed range to activate the photoactive material bound to the contaminant. Upon activa- tion, the material eradicates the contami- nant. The system and method provide ex- tracorporeal treatment of fluids like blood to quickly and effectively eradicate infection agents at relatively high flow rates.

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