A blood pump for hemodialysis automatically regulated by fistulated venous pressure (FVP, the internal pressure of the vein which has an arteriovenous fistula) is newly devised. As FVP has been proven to change correctively with the systemic blood pressure (BP), the pump is to be regulated by BP.
A special double lumen needle is used for simultanous leadings of FVP and blood as a blood access.
In clinical applications, the system functions satisfactorily while the pump automatically speed down when the patient's BP drops.
