Safety Notes

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Using the Arthroscopy Indication

side of the joint.

Actual pressure > 300 mmHg If the actual pressure exceeds a value of 300 mmHg, the following safety mech-

anisms are automatically triggered by the device:

• Immediately: The roller wheel stops.

• A continuous acoustic signal is emitted. The status line depicts Critical over-

pressure! in red letters.

• If the overpressure actually occurs inside of the joint, the pump triggers a pres-

sure relief function consisting of turning the roller wheel backwards. The day

set is identified as being contaminated (see Chapter 9.10.4 "Contamination of

the Day Patient Set").

• The roller wheel stops after 5 additional seconds.

• 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 intra-articular joint

pressure can be reduced by opening the outflow cannula, for example. If possi-

ble, the attending physician should perform this task.

9.10.4 Contamination of the Day Patient Set

If the day patient set is contaminated, the pump reacts with acoustic (beeps) and

visual warning signals.

If the day tube has become contaminated during the carried out surgical proce-

dure, the status line depicts in red letters: Day tube contaminated. A short acous-

tic alarm (beep) is emitted 3x. Surgery can still be finished until the [STOP] key

has been pressed. After the surgical procedure is finished, the pump cannot be

started any longer. The status line depicts the following alternating messages:

Day tube contaminated and Please replace.

ARTHRO

SET

PRESSURE

45 mmHg

SET

FLOW

1.5 l/min

ACTUAL PRESSURE

0 50 100 150 200

STOP WASH

Critical overpressure!

Knee

315 mmHg