Patent ID: 7309323

Claim:
A continuous renal replacement therapy (CRRT) device comprising: means for enabling a patient to wear the entire CRRT device; a microcontroller, said microcontroller adapted to be powered by a battery; a dual channel pulsatile pump, controlled by said microcontroller, said dual channel pulsatile pump comprising a single motor, a first pump channel and a second pump channel, said dual channel pulsatile pump adapted to be powered by said battery; a blood circuit comprising: a blood inlet tube for receiving blood from a patient; said first pump channel for pumping blood in a pulsatile manner through said blood circuit; a first micropump for pumping an anticoagulant into said blood circuit, said micro pump being controlled by said microcontroller; a dialyzer receiving blood pumped by said first pump channel; a pressure transducer for providing a blood circuit pressure signal to said microcontroller; an outlet port for allowing blood to go back into said patient after being received by said dialyzer; and a dialysate circuit for circulating dialysate through said dialyzer and for removing contaminants from said circulating dialysate, said dialysate circuit comprising: a filter section for reacting with predetermined substances in said dialysate in order to refresh said dialysate for continued usage in said dialysate circuit; said second pump channel for pumping dialysate at a flow rate between 40 ml/min and 100 ml/min (pulsatile) through said dialysate circuit; a sensor, attached to said dialysate circuit, providing a signal to said microprocessor indicating that said filter section requires maintenance; a degasser, attached to said dialysate circuit, for removing gas from said dialysate circuit; and said CRRT device being adapted to operate on less than 10 watts of power.