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Magstim Rapid
2
3576-23-09
3.8 STIMULATION
See Section 4 to select the desired mode, stimulating power, stimulation frequency, train duration and
inter-train delay.
Activate the
AIU\.-1
but1on on the UI bezel to arm the unit. The system will charge and the UI will
display READY in the system status \.Vindow.
NOTE: The system cannot be anned if the footswitch is active.
Position the stimulating coil on the desired area of tissue. The system can be triggered by
pressing a coil switch button and either pressing the footswitch on the trigger button or on the
UI. A clicking noise
\Yill
emanate from both the stimulating coil and the M.agstim Rapid
2
each
time the Magstim Rapid
2
is triggered. This indicates that a magnetic pulse is being delivered by
the stimulating coil, which is stimulating the ne1-ves beneath it.
\\'hen necessary, it is possible to reposition the stimulating coil and/or to modify the pmver level on the
UI to suit the requirements for the next stimulus. Meanwhile, the system will have recharged and can
be triggered once again in the nonnal manner.
\Vhen the stimulations have been completed, press the SYSTEM STOP button on the UI.
The system can only be fired when one of the follmving UI screens is displayed:
•
Single Pulse l\fode,
•
Repetitive Mode
•
Session Mode.
EXTERNAL TRIGGERING
If an external triggering device is used, the Rapid
2
uses the power set to govern the maximum discharge
frequency. Therefore, if the external frequency is set higher than the power set will allow, the
stimulator will discharge at the maximum rate the stimulator can achieve for the power set, and not at
the rate from the external trigger source. In these situations, reducing the power will allow the
discharge frequency to increase. However, during external triggering there are no duration limits on the
trains. Therefore, it is probable under high frequency operation that enough energy will be discharged
into the coil to result in its temperature rising rapidly above 40°C following the system going into a coil
over-temp condition and reverting to its discharged state.
It is important that if this type of operation is intended the protocol be nm prior to use on a patient and
the surface temperature of the coil monitored to ensure that the patient is not exposed to excessive
tempera t:ures.
NOTE. If the external trigger is set to the level triggering option it is possible for auto-triggering to
occur.
IMPORTANT
The temperature of the system is internal components becomes elevated during operation. The system
should be left
011,
and uncovered, for approximately ten minutes i<)llowing completion of stimulation to
enable the fan to cool the internal system components.
The MAGSTIM Company LTD
12
November 2009
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