Patent ID: 7220354

Claim:
A device for hemodialysis, comprising: a cylindrical housing having a housing wall; a first cylindrical rotor having a first wall comprising a dialysis membrane, wherein said first cylindrical rotor is disposed coaxially within said housing and adapted to rotate therein, such that a first coaxial gap exists between the dialysis membrane and the housing wall; a second cylindrical rotor having a second wall, wherein said second cylindrical rotor is disposed coaxially within said first cylindrical rotor and adapted to rotate therein, such that a second coaxial gap exists between the first and second walls; a first inlet port in the housing wall for conducting blood into the first coaxial gap and a first outlet port in the housing wall for conducting dialyzed blood out of the first coaxial gap; a second inlet port in said housing for conducting dialysis fluid into the second coaxial gap and a second outlet port in said housing for conducting dialysate out of the second coaxial gap; a first rotational drive means for rotating the first cylindrical rotor within said housing; and a second rotational drive means for rotating the second cylindrical rotor within said housing.