Peritoneal dialysis system

Details Peritoneal dialysis system Peritoneal dialysis system

A - Human Necessities

61

M

A61M 1/28 (2006.01) A61M 5/168 (2006.01) G01F 1/34 (2006.01) G01F 11/28 (2006.01) G01F 15/04 (2006.01)

Patent

CA 2134206

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 from these a measurement of liquid volume moved through the pump chamber (P1, P2). The systems and methods minimize derivation errors by compensating for temperature differences among the pump chamber (P1, P2); the pump actuator (PA1, PA2); and the reference chamber (VS1, VS2).

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