Liquid purification or separation – Automatic control
Patent
1998-08-03
2000-11-14
Drodge, Joseph W.
Liquid purification or separation
Automatic control
2103216, 210646, 248919, 345173, 604 4, B01D 6130, B01D 6132
Patent
active
061465232
ABSTRACT:
A user interface for a medical instrument such as a dialysis machine is described which uses both a touch screen and at least one hard key off of the touch screen to effectuate a change in a parameter associated with the operation of the machine or the treatment session. The user interface is connected to a central computer control system having a host microprocessor and a backup safety microprocessor. The hard key is directly wired to the safety microprocessor. After the user selects a new parametric value on the touch screen, the user presses a hard key. The host and safety microprocessors implement a verification routine to insure that the entered parameter is appropriate for the patient's treatment and the display on the touch screen. If the verification procedure ends in a positive result, the user is prompted to presses a second hard key to confirm the change, causing an additional verification check to be preformed. If the additional verification check is successful, the parametric value is entered into a memory (such as a hard disk) storing instructions for operation of the medical instrument.
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Barrett Shawn O.
Brose Tom L.
DeJesus Joel
Dolan William R.
Gebhardt Andrew
AKSYS, Ltd.
Drodge Joseph W.
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