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The Vercise™ Stimulator
The Vercise Stimulator is rechargeable. Patient's should expect a daily recharging time
of 15 to 30 minutes or a periodic recharging time of 3 to 4 hours every 1 to 2 weeks, but
their recharge routine may vary depending on their stimulation parameters. High power
users will require more frequent charging. Boston Scientific recommends any recharge
schedule that fits the patient's schedule and lifestyle while maintaining sufficient charge
to maintain stimulation.
Note: Frequent charging does not affect or diminish the battery life of the Stimulator.
Developing a patient's recharge schedule involves finding the right balance between four
factors:
•
How much power is required for the patient to experience effective therapy.
•
How often the patient wants to recharge.
•
How long the patient wants to recharge.
•
How the patient would like to manage their personal schedule.
The Clinician Programmer (CP) will estimate charging time based on 24 hours per day
of stimulation at the programmed settings. Patients should be instructed to charge either
a little every day (for 15 to 30 minutes) or fully charge once every 1 to 2 weeks (for 3
to 4 hours). If fully charging the Stimulator, patient should be instructed to charge until
the Charger emits the end of charge double beep. The recharging process is simple, but
important.
The rechargeable Stimulator battery should provide at least five years of service. In many
cases, the Stimulator battery should provide at least 25 years of service. Battery life is
dependent on the stimulation settings and conditions. To determine the expected battery
life for specific settings and conditions, please see the "Appendix" on page 77 of this
manual.
Over time and with repeated charging, the battery in the Stimulator will lose its ability
to recover its full capacity. As a result, over time, the Stimulator may require shorter
intervals between charges. For example, a Stimulator with settings requiring charging
every 22 days during the first year, is expected to require charging every 20 days after
five years of continuous use (amplitude = 3 mA, pulse width = 60 μs, rate = 185 Hz,
impedance = 1500 Ohms). The Stimulator will need replacement when stimulation can no
longer be maintained with routine charging.
The Vercise™ Stimulator
Vercise™ DBS Physician Manual
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