Legacy® PLUS - Smiths Medical

Upstream Sensor On/Off
Section 4: Biomed Functions
The Upstream Occlusion Sensor screen can be set to On or Off. If this
screen is set to On, and an upstream occlusion (between pump and fluid
container) is detected, an alarm will sound, delivery will stop, and the
display will show “Upstream Occlusion.”
WARNING: When the Upstream Occlusion Sensor is turned off, the
pump will not detect occlusions upstream (between pump and fluid
container). Periodically inspect the fluid container for decreasing
volume, inspect the fluid path for kinks, a closed clamp, or other upstream
occlusions. Upstream occlusions could result in under- or nondelivery
of medications. If undetected, these occlusions could result in
death or serious injury to the patient.
1. With the pump stopped and in LL0, access Biomed Functions.
(Refer to the beginning of the Biomed Functions section for instructions
on how to access Biomed Functions.)
2. Press „ until “Upstream Sensor” appears.
3. Press ´ or Î to select Off or On.
4. Press ¤ to enter the change.
The Upstream Occlusion Sensor will also detect a partial occlusion. If the
partial occlusion, or restriction in flow is sufficient to activate the sensor, and
then clears, the pump will show a brief screen message “Upstream Occlusion”
and the pump will beep to coincide with the screen message. An insistent
alarm will not occur if the occlusion clears itself. Continued restriction
in flow causing repeated “Upstream Occlusion” messages that subsequently
clear themselves can lead to under-delivery of medication, which could be
up to 10% of the set delivery rate. The Upstream Occlusion events will be
recorded in the pump event history as “Upstream Occlusion” and “Alarm
Complete” when the occlusion is cleared.
The software automatically turns off the Upstream Occlusion Sensor during
the last 6% of the reservoir volume. This is to take into account the ± 6%
system delivery accuracy and avoid nuisance alarms.
Biomed
Functions