Peritoneal dialysis systems and methods employing pneumatic pressure and temperature-corrected liquid volume measurements
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United States of America Patent
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Dec 12, 1995
Grant Date -
N/A
app pub date -
Mar 3, 1993
filing date -
Mar 3, 1993
priority date (Note) -
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Abstract
Peritoneal dialysis systems and methods move liquid using a pump chamber that is operated in response to pneumatic pressure variations applied by a pump actuator. The systems and methods periodically measure air pressures in the actuator and an associated reference air chamber and derive from these a measurement of liquid volume moved through the pump chamber. The systems and methods minimize derivation errors by compensating for temperature differences among the pump chamber; the pump actuator; and the reference chamber.
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Family
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