Product Surveillance Registry- Deep Brain Stimulation for Epilepsy (MORE)

Adults diagnosed with refractory epilepsy characterized by partial-onset seizures, with or without secondary generalization

Inclusion Criteria:

• Fulfilling the criteria of labeling indications of Medtronic® DBS™ Therapy for Epilepsy.
• Patient with diagnosis of refractory epilepsy as defined by 1981 ILAE (International League Against Epilepsy) classification, who have been implanted or will be implanted with Medtronic® DBS™ Therapy for Epilepsy.
• For both cohorts, completed at least two full months diary information on seizure type and frequency prior to DBS implant (seizure type should be classified at least as simple partial, complex partial, partial evolving to secondarily generalized seizures, and generalized). In regard to the prospective cohort, the patient will be conditionally enrolled at the enrolment visit, and the criterion will be reassessed at the baseline visit.
• Patient or patient's legally authorized representative able to understand and to provide written informed consent and/or authorization for access to and use of health information, as required by an institution's IRB/MEC or local law and regulations.

Exclusion Criteria:

• Incomplete and/or unreliable patient seizure diary based on the physician's judgment
• Pregnancy at time of enrollment
• Patient is currently enrolled in or plans to enroll in any concurrent drug, surgery and/or device study that may confound the results of this registry.