Patent ID: 6303036
Filing Date: 2001-10-16
Classification: A61M,Y10S

Abstract:
In a blood dialysis system including a source of substitution fluid and a blood dialysis machine, a hemodiafiltration device comprising:a first dialyzer including:a first membrane;said first membrane defining a first blood compartment having a first blood inlet which receives blood and a first blood outlet which discharges partially diafiltered blood; andsaid first membrane defining a first dialysate compartment having a first dialysate inlet and a first dialysate outlet;means for mixing said partially diafiltered blood with a substitution fluid to obtain a blood/substitution fluid mixture;a second dialyzer including:a second membrane;said second membrane defining a second blood compartment having a second blood inlet which receives said blood/substitution fluid mixture and a second blood outlet which discharges diafiltered blood; andsaid second membrane defining a second dialysate compartment having a second dialysate inlet and a second dialysate outlet;at least one sterility filter which receives dialysate from said dialysis machine and provides sterilized dialysate fluid to said means for mixing; anda control unit which controls the flow of blood through said first and second dialyzers and the circulation of dialysate fluid between the dialysis machine, said first and second dialysate compartments and said at least one sterility filter.