Device and method for measuring the ultrafiltration in an artificial kidney
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United States of America Patent
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Aug 27, 1991
Grant Date -
N/A
app pub date -
Jun 1, 1990
filing date -
Jun 2, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention includes a device for measuring a quantity of liquid extracted from a dialysis liquid circuit, the device having a reservoir means connected to the dialysis liquid circuit for receiving liquid from the dialysis liquid circuit, at least one measurement container for receiving liquid from the reservoir, a flow channel connecting the reservoir with the at least one measurement container for selectively filling the measurement container with liquid from the reservoir, a level detector disposed proximate a predetermined area on the at least one measurement container for detecting the presence of liquid at a predetermined level, and a drain port on the measurement container for receiving a signal from the level detector to empty the contents of the measurement container after the presence of liquid at the predetermined level is detected. The invention also includes a method for measuring a quantity of liquid extracted from an artificial kidney in a dialysis liquid circuit including the steps of successively filling a measurement container to a predetermined level with liquid to be measured, emptying the measurement container, reducing the rate of filling of the measurement container as the predetermined level is approached, and detecting the presence of liquid at the predetermined level.
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