therapeutic and assistive devices used for persons with kidney failure or kidney injury; apparatus, devices and articles for renal replacement therapy (RRT); apparatus, devices and articles for continuous renal replacement therapy (CRRT); artificial kidney device; hemodialysis device; liver dialysis device; peritoneal dialysis device; portable dialysis devices; apparatus, devices and articles for home hemodialysis; apparatus, devices and articles for replacing impaired organ functions; apparatus and devices for organ replacing treatments; medical apparatus and instruments for persons with organ dysfunction; artificial organ devices; therapeutic and assistive devices adapted for therapies requiring extracorporeal blood circulation; apparatus, devices and articles adapted for blood purification treatments; apparatus, devices and articles for producing reverse osmosis water adapted for treating persons with kidney injury; apparatus, devices and articles for producing reverse osmosis water adapted for dialysis treatments including hemodialysis, peritoneal dialysis or liver dialysis; apparatus, devices and articles for therapies requiring external blood circulation; apparatus, devices and articles for producing purified water used for treating persons with kidney injury; apparatus, devices and articles for producing purified water adapted for dialysis treatments including hemodialysis, peritoneal dialysis or liver dialysis; apparatus, devices and articles for producing purified water adapted for therapies requiring external blood circulation; water purification devices for persons with organ failure or organ injury; water purification devices for dialysis treatments; water purification devices for therapies requiring external blood circulation; water purification devices for organ replacing treatments; water purification facility for persons with organ failure or organ injury; water purification facility for persons with kidney failure or kidney injury; water purification facility for therapies requiring external blood circulation; water purification facility for dialysis treatments; portable devices for producing purified water for persons with kidney injury; portable devices for producing purified water for dialysis treatments; portable devices for producing reverse osmosis water for persons with kidney injury; portable devices for producing reverse osmosis water for dialysis treatments