Dialysis Machine

摘要

The invention relates to a dialysis machine having improved flow balance. In particular, the invention monitors the pressure of blood entering and leaving a patient's body using several sensors (37, 39) and adapts the pressure of a dialysate solution feed to the dialysis machine to compensate for compliances in the fluid flow path. As a consequence, better flow balance is maintained throughout dialysis treatment leading to a more uniform removal of waste materials form the blood.

主权项

1. A dialysis device comprising:
an arterial blood line for delivering patient blood to a dialyser; a venous blood line for returning dialysed blood from the dialyser to the patient; a controller which controls a dialysate distribution pump for pumping fresh dialysate into the dialyser and spent dialysate out of the dialyser, the dialyser distribution pump having an inlet line for receiving fresh dialysate from a dialysate supply; a pressure sensor in the arterial and/or venous blood line, the sensor operably connected to the controller such that the controller receives a signal from the sensor representative of pressure in the arterial and/or venous blood; wherein, the controller monitors the signal from the sensor in the arterial and/or venous blood line and controls the pressure of the dialysate in the inlet line of the dialysate distribution pump in response to the pressure measured in the arterial and/or venous blood line.