maxium® smart C Electrosurgery Unit with maxium® smart Beam
94
Revision 1
Duo Spray
If two monopolar patient circuits can be activated simultaneously via independent hand or foot switches,
the selected power of the generator feeding the circuits can be split between the two channels. The
corresponding technical standard (IEC 60601-2-2) provides this possibility only for coagulation currents
allowing contact-free application. To a certain extent such coagulation currents can also be used for tissue
preparation.
Duo spray qualitatively corresponds to the Spray current with the difference that in addition to individual
activation also simultaneous activation of the monopolar outputs M is possible. This type can be used
specifically in cases where one patient is to be operated upon at two different locations at the same time,
for example in cardiac surgery (preparation of the crural vein with a very strong coagulation component
and simultaneous preparation of the mammaria in the thoracic area). Activation is done via the blue
switches (finger or foot).
If this current is selected for either of the coagulation channels of the M outputs, it will appear also on the
other output port. The power can be set only to the same value on both channels. If the current of one
channel is switched off or replaced by any other, the parallel channel will switch to “single version” Spray.
In case of individual activation of the currents, these behave like the Spray current. In case of synchronous
activation, the power is split between the two outputs.
Danger of injury by sparking!
Active accessories to be used with this current must be able to withstand a combination of an HF voltage
of at least 4,500 V (depending on the selected effect).
For the special risks posed by high electrical voltages, see section 5.4, page 24.
The powerful sparking may cause ignition of combustible substances or mixtures of substances, see
section 5.3, page 23.
Do not use this current for indirect contact coagulation via surgical instruments. There is great danger of
arcing.
Risk of injury from excessive power!
The output powers of the active electrodes may change during use due to switching on or off of the
parallel patient output port or unbalanced and varying application conditions!
