Stimulator Programmable Characteristics - Boston Scientific Vercise DBS Mode D'emploi

Stimulator Programmable Characteristics

The stimulation parameters are independent for the two DBS Leads such that
stimulation of two different brain targets can have different amplitudes, pulse widths,
stimulation rates, and contact configurations. The two DBS Leads can also have
differing monopolar and multipolar configurations; however, a given DBS Lead
contact cannot be programmed as both monopolar and multipolar.
The programmable parameter ranges for the Stimulator are shown in Table 2.
Note: Some frequency combinations may not be used. See the DBS Programming
Manual for specific frequency combinations.
Amplitude
1
Rate
2, 3
Pulse Width
4
Cycle (On/Off)
Stim Ramp On
Contact Connections
Independent Areas of Stim (4 Programs with
4 Areas per Program)
The programmable coverage for each individual contact is limited to 12.7 mA.
1
A programming 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
3
responsibility of the user.
The use of lower pulse widths than established (60-450 μsec) is the sole responsibility
4
of the user.
NOTE: While it is possible to program stimulation rates higher than 255 Hz,
clinical effectiveness and saftey of these cumulative rates has not been
demonstrated and is not recommended.
WARNING: Although the CP utilizes warnings to aid clinicians in their
determination of safe charge density levels, the primary responsibility
of keeping safe current levels resides with the clinician. Additionally,
maximum and minimum amplitude levels allowed by the Remote
Control should be set and verified by the physician to ensure that these
levels are safe.
Table 2: Stimulator Function
Parameter
Detailed Device Description
Range
0.1 – 20 mA
2 – 255 Hz
10 – 450 µs
1 s – 90 min
1 – 10 s
16
16
Physician Manual
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