Safety Notes

86
Using the Urology Indication
en
11.13.2Exceeding Nominal Pressures When Using Standard Tube Set
Overpressures may occur during device operation. The device features corre-
sponding safety mechanisms that support the physician performing the surgery
in deciding on appropriate responses.
Actual pressure > nominal pressure If the actual pressure exceeds the nominal pressure, the following safety mech-
anisms are automatically triggered by the device:
• Immediately: A pressure relief function is activated that consist of turning the
roller wheel backwards.
• If the actual pressure falls below the nominal pressure, the roller wheel starts
turning forward again and irrigation continues.
Actual pressure > nominal pressure
+10mmHg
If the actual pressure exceeds the nominal pressure by more than 10 mmHg (ex-
ample: nominal pressure = 45 mmHg, actual pressure = 56 mmHg), the following
safety mechanisms are automatically triggered by the device:
• Immediately: A continuous acoustic signal is emitted. The status line depicts
Overpressure! in red letters.
• A pressure relief function is activated that consist of turning the roller wheel
backwards.
• If the actual pressure falls below the nominal pressure, the roller wheel starts
turning forward again and irrigation is continued. The warning message in the
status line is no longer displayed.
Actual pressure > 90 mmHg If the actual pressure exceeds a value of 90 mmHg, the following safety mecha-
nisms are automatically triggered by the device:
• Immediately: The color of the actual pressure display bar changes from blue to
red. The center of the bar depicts the actual pressure.
• A pressure relief function is activated that consist of turning the roller wheel
backwards.
• If the actual pressure falls below the nominal pressure, the roller wheel starts
turning forward again and irrigation is continued. The warning message in the
status line is no longer displayed.
Actual pressure > 100 mmHg If the actual pressure exceeds a value of 100 mmHg, the following safety mech-
anisms are automatically triggered by the device:
• Immediately: A continuous acoustic signal is emitted. The status line depicts
Critical overpressure! in red letters.
• A pressure relief function is activated that consist of turning the roller wheel
backwards.
• After 5 additional seconds: The roller wheel stops.
• If the actual pressure falls below the nominal pressure, the roller wheel starts
turning forward again and irrigation continues. The warning message in the
status line is no longer displayed.
CAUTION!
The message "Critical Overpressure!" overwrites all other possible messages.
Overpressure warnings serve as information for the attending physician to re-
spond appropriately to the existing excess pressure. The intravesical and intra-
ureteral joint pressure can be reduced by opening the outflow cannula, for
example. If possible, the attending physician should perform this task.
URO
SET
PRESSURE
45 mmHg
SET
FLOW
0.3 l/min
ACTUAL PRESSURE
0 50 100 150
Overpressure!
STOP
URO
SET
PRESSURE
45 mmHg
SET
FLOW
0.3 l/min
ACTUAL PRESSURE
0 50 100 150
Overpressure!
STOP
95 mmHg
URO
SET
PRESSURE
45 mmHg
SET
FLOW
0.3 l/min
ACTUAL PRESSURE
0 50 100 150
Critical overpressure!
STOP
110 mmHg
OBJ_DOKU-0000006143-008.fm Seite 86 Mittwoch, 11. November 2020 2:29 14