RNS System NAUTILUS Study

Inclusion Criteria

• •Participant is age 12 and older.
• •Participant is male or is a female of childbearing potential who is surgically sterile, 2 years postmenopausal, or practices a reliable method of contraception (hormonal, barrier method or abstention).
• •Participant failed treatment with a minimum of two antiseizure medications (used in appropriate doses) with adequate monitoring of compliance and the effects of treatment, as determined by the investigator.
• •Participant is able to maintain an electronic diary alone or with the assistance of a competent individual.
• •Participant is able to attend clinic appointments in accordance with the study schedule.
• •Participant or parent(s) or legal representative have signed an IRB approved written informed consent/assent. The informed consent form or specific assent form, where required, will be signed and dated by minors.
• •Participant is not currently implanted with an RNS Neurostimulator or NeuroPace Leads.
• •In the investigator's opinion, participant is able to tolerate a neurosurgical procedure.
• •Participant with a confirmed diagnosis of idiopathic generalized epilepsy experiencing primary generalized tonic-clonic seizures, with or without myoclonic or absence seizures, consistent with the International League against Epilepsy Revised Classification of Seizures (2017).
• •Participant has had 2 or more generalized tonic-clonic seizures during the two month retrospective baseline.
• •Participant has had a routine electroencephalogram (EEG) within 2 years prior to enrollment with electroencephalographic features consistent with idiopathic generalized epilepsy; other concomitant anomalies must be explained by adequate past medical history.
• •Participant has been on a stable antiseizure medication (ASM) regimen during the two month retrospective baseline and is willing to remain on a stable ASM regimen during the prospective Baseline and throughout the Effectiveness Evaluation Period, if medically possible; rescue benzodiazepine medications for acute seizure clusters are permitted.
• •Participant has undergone computed tomography (CT) or magnetic resonance imaging (MRI) within 10 years prior to enrollment that ruled out a progressive cause of epilepsy or an abnormality likely to be associated with focal-onset seizures.
• •Participant does not have a vagus nerve stimulator (VNS, LivaNova) or Participant's VNS is OFF during the two month retrospective baseline and participant is willing to keep the VNS off during the study.