PERITONEAL DIALYSIS SYSTEM

摘要

Peritoneal dialysis systems and methods move liquid using a pump chamber (P1 , P2) that is operated in response to pneumatic pressure variations applied by a pump actuator (PA1, PA2). The systems and methods periodically measure air pressures in the actuator (PA1; PA2) and an associated reference air chamber (VS1, VS2) and derive fro m these a measurement of liquid volume moved through the pump chamber (P1, P2). The systems and methods minimize derivation error s by compensating for temperature differences among the pump chamber (P1, P2); the pump actuator (PA1, PA2); and the reference chamb er (VS1, VS2).