The survival estimates for generators are based on devices registered as implanted in Medtronic's Device and Registrant Tracking system (predominantly United States implants).

The survival estimates provided in this report are considered to be representative of the aggregatte worldwide performance of this model. The actual longevity achieved for any single device while implanted will depend on the actual programmed parameters and patient factors, and may differ significantly from these aggregate estimates.

Click on the Methods for Estimating link for more on how the data on these device is used to create these survival estimates.