Appendix; Rechargeable Stimulator Battery Longevity - Boston Scientific Vercise DBS Mode D'emploi

Appendix

Rechargeable Stimulator Battery Longevity

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-longevity is dependent on the stimulation settings and conditions.
The battery-longevity projections provided in the table below are based on
continuous stimulation with one area and one program. The longevity estimates are
generated using projections of typical results based on Boston Scientific internal
testing data. Actual results may vary. To determine battery-longevity with multiple-
area stimulation, please use the Multiple-Area Longevity Worksheet provided below.
To determine battery-longevity with multiple stimulation programs, please use the
Multiple-Program Longevity Worksheet provided below. If stimulation is not used
continuously, the projected battery longevity should exceed the value shown.
Defining End of Battery Longevity
The expected battery longevity is defined as the longer of either:
a) Typical case: the time from initiating therapy to the time at which therapy
cannot be maintained with daily charging
OR
b) High energy case: when the maximum time between charging has decreased
by more than 50% from the initial maximum time between charging.
Effect of Impedance on Battery-Longevity Projections
This chart assumes a maximum impedance of 1500 Ohms between any 2 contacts
in use. For lower impedance values, the projected battery longevity should slightly
exceed the value shown. For higher impedances, the projected battery longevity
should be slightly less than the value shown.
Determining Longevity
1. Fit the Vercise™ DBS System to the patient, make note of the amplitude, rate
and pulse width for each of the areas. For multi-area stimulation, please use the
Multiple-Area Battery-Longevity Worksheet.
Appendix
Physician Manual
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