Liquid purification or separation – Constituent mixture variation responsive – With membrane
Patent
1995-06-07
1998-04-28
Drodge, Joseph W.
Liquid purification or separation
Constituent mixture variation responsive
With membrane
210143, 21032171, 210646, 604 4, B01D 632
Patent
active
057440271
ABSTRACT:
A number of improvements relating to methods and apparatuses for kidney dialysis are disclosed. These include checking of dialysate bypass status using flow measurement; using a flow sensor to confirm the absence of ultrafiltration during bypass; automatic testing of ultrafiltration function by removal of a discrete volume from a portion of the dialysate flow path coupled with a pressure test of that part of the flow path; using a touch screen user interface; bar graph profile programming of ultrafiltration, sodium, and bicarbonate parameters; using a RAM card to upload treatment instructions to, and to download treatment data from, the machine; automatic setting of proportioning mode (acetate or bicarbonate) based on connections of concentrate lines; predicting dialysate conductivity values based on brand and formulation of concentrates; minimizing no-flow dead time between dialysate pulses; initiating operation in a timed mode from a machine power-off condition; preserving machine mode during machine power-fail condition; calibration scheduling and reminding; automatic level adjusting; and blood leak flow rate detecting.
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Bedient Robert A.
Connell Mark E.
Elsen Raymond
Hogard Michael E.
Johnson Harley D.
Althin Medical, Inc.
Drodge Joseph W.
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