US Patent 8038639 Medical fluid system with flexible sheeting disposable unit

A kidney failure therapy system includes: (a) a dilaysate supply; (b) at least one valve actuator; (c) at least one pump actuator; and (d) a disposable unit including first and second flexible sheets sealed together for form: (i) at least one flow path configured to be placed in fluid communication with the dilaysate supply; and operable with the at least one valve actuator; and (ii) at least one pumping portion configured to operate with the at least one pump actuator.