WORLD OF MEDICINE A127, Инструкция по эксплуатации

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Safety Functions
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6 Safety Functions
The electronic components continuously monitor the proper function of the device.
Device malfunctions are indicated with audible warning signals (beeps), error mes-
sages, and/or the blocking of device functions. A table listing a summary of pos-
sible error and warning messages is provided in Chapter Error and Warning Mes-
sages [
} 54].
6.1 Device Self-Test
After being switched on, the device performs a self-test of the sensors, the motor,
and electronic components. All LEDs light up during the self-test. Chapter Error and
Warning Messages [
} 54] describes the messages for defects of the individual
modules or components.
6.2 Exceeding Nominal Pressure
In case of arthroscopic surgical procedures, it is possible that temporary overpres-
sures occur (up to more than 300 mmHg in extreme cases), especially when the
joint is being moved. The pump is therefore equipped with safety control mechan-
isms.
Exceeding nominal pressure during op-
eration
The pump reduces any possible overpressure within the joint.
If the actual pressure exceeds the nominal pressure by more than 30 mmHg for at
least 5 seconds, the pump tries to reverse the roller wheel to reduce the overpres-
sure. A visual or acoustic warning is not provided.
If the pump is unable to reduce the overpressure, the Overpressure LED flashes red
(Fig. Front of the device [
}
22]
(7)
) and an acoustic warning signal is emitted (10
beeps). The motor shuts down as well. Once the overpressure is eliminated, the
motor starts again and the visual and acoustic warnings are removed.
Pressure > 200 mmHg If the actual pressure exceeds the safety threshold of 200 mmHg, the device imme-
diately activates the roller wheel in reverse motion to attempt a reduction of the
overpressure.
The Overpressure LED (Fig. Front of the device [ } 22]
(7)
) flashes yellow. If the
value does not drop below the safety threshold of 200 mmHg within 2 seconds, an
acoustic warning signal is emitted (3 beeps).
Pressure > 250 mmHg If the value exceeds the safety threshold of 250 mmHg, the device immediately ac-
tivates the roller wheel in reverse motion to attempt a reduction of the overpres-
sure. The Overpressure LED (Fig. Front of the device [
} 22]
(7)
) flashes red. If the
value does not drop below the safety threshold of 250 mmHg within 0.5 seconds,
an acoustic warning signal is emitted (10 beeps).
If the pump continuously moves the wheel in reverse for more than 5 seconds and
is still unable to reduce the pressure to less than 250 mmHg, the motor is switched
off until the pressure value drops below <250 mmHg.
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