P20/37 E-IM54f
WARNINGS
1) Footswitches should be used with care at
all times and should always be under control
of the surgeon or designated assistant, as
inadvertent operation could have serious
results.
2) Footswitches should be kept clear of areas
where other personnel could accidentally press
them, also ensure that they do not get wedged
under theatre equipment.
3) Select mains switch (42) to ‘O’ (‘off’) as
soon as electrosurgery is completed.
Monopolar cut and coag outputs
5.33 Monopolar cut and coag outputs are obtained by
pressing monopolar selector touch buttons (11, 13, 15, 19
or 20), then setting output controls (14) for cut or (21) for
coag to the required levels, and then using the fingerswitch
or pressing the appropriate footswitch.
5.34 'Running' tones are generated whenever monopolar
cut or coag outputs are activated by footswitch or
fingerswitch. The volume of the running tones is adjustable
by the volume control (33) on the back of the unit. A small
screwdriver is needed for this adjustment. This does not
affect the pitch (i.e. frequency) of the tones.
5.35 Yellow indicator (9) is illuminated when cut power is
activated and blue indicator (22) is illuminated when coag
power is activated,
5.36 For a cutting current with increased haemostatic
effect, select blend touch button (13). Adjusting the setting
of cut control (14) will only change the power output, it will
not change the nature of the blended current. Blended
output is only obtained by pressing the yellow (cut)
fingerswitch button, or by pressing the yellow (cut)
footswitch.
5.37 For maximum cutting speed, particularly in urology,
select the specialist cut touch button (15).
5.38 The two coag modes are selected by touch buttons
(19) pinpoint coag and (20) spray coag. The pinpoint mode
provides low voltage coagulation for most types of surgery.
The spray coag mode activates a separate generator circuit
which provides a waveform that reduces the cutting effect
to a very low level but provides fast coagulation by allowing
an arc to form between the electrode and the tissue. The
waveform is a series of high energy single pulses. Spray
coag allows non-contact coagulation of tissue that tends
to adhere to active electrodes.
Note: Spray coag (indicated with the bright green LED) is
not recommended for laparoscopic and endoscopic
procedures where its high voltage waveform can damage
the insulation of laparoscopic and endoscopic instruments,
especially flexible endoscopes. Most urological
endoscopes are suitable for spray coag. If in doubt check
that the voltage rating of the laparoscopic or endoscopic
instrument is at least as high as the maximum spray coag
open circuit voltage of this electrosurgical unit (see
Technical Date section).
CAUTION
Although power output in the spray mode is
lower than in the pinpoint mode (79W rather
than 170W maximum), the effect on tissue is
much greater in the spray mode. Until
experience is gained, only low control settings
should be used.
5.39 Select pinpoint or spray coag at touch buttons (19)
or (20) respectively and note correct selection by
illumination of a green indicator (17) for pinpoint coag and
a bright green indicator (18) for spray coag adjacent to the
applicable touch buttons.
Power output
WARNING
Apparent low power or failure of the unit to
function correctly at the normal operating
settings may indicate faulty application of the
plate electrode or poor contact in its
connections. In this case, the application of the
plate electrode and its connections should be
checked before selecting a higher output
power.
5.40 The output power level is adjusted by the power output
controls (14) and (21) for cut and coag modes respectively.
Turning the knob clockwise increases the power output
which is displayed digitally on displays (8) and (23)
respectively.
5.41 Digital power displays (6, 8 and 23) can show a
second type of output setting display by pressing the digital
display range selection button (35) on the rear of the unit.
The two available digital displays are as follows:
♦
When button 35 IS NOT pressed.
The
typical
power output available for a given setting
of the respective power output control is displayed.
The calibration is in watts for a
typical
resistance (see
Technical Data section for the maximum power
available for each output mode).
♦
When button 35 IS pressed.
The power output selected for a given setting of the
respective power output control is displayed as a
numerical value up to 10.
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