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Stimulator Programmable Characteristics
If two leads are implanted, the stimulation parameters are independent such that stimulation of two
different brain targets can have different amplitudes, pulse widths, stimulation rates and contact
configurations. It is possible to configure one lead as monopolar, and one as multipolar. It is also
possible to configure a single lead with both monopolar and multipolar areas.
The programmable parameter ranges for the Stimulator are shown below.
#
Parameter
1
Amplitude
1
2
Rate
2,3
3
Pulse Width
4
4
Cycle On/Off
5
Ramp On
6
Contact Connections
7
Independent Areas of Stim
(4 programs with 4 areas per Program)
The programmable coverage for each individual contact is limited to 12.7 mA. A programming
1
interlock is enforced to limit the total output current to 20 mA or less per coverage area. For
example, a maximum current output of 12.7 mA on one contact would limit the total summed
current output on the remaining contacts to 7.3 mA within one coverage area.
The rate is limited to 255 Hz for a given area.
2
The use of higher frequencies than the ones that are established (250 Hz) is the sole responsibility
3
of the user.
The use of lower pulse widths than established (60-450 μsec) is the sole responsibility of the user.
4
Tools and Additional Information
Parameter Range
0.1 mA - 20 mA
2 Hz - 255 Hz
20 μs - 450 μs
1 sec - 90 minutes
1 - 10 seconds
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Vercise™ Neural Navigator Programming Manual
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