The purpose of this clinical trial is to evaluate the safety and effectiveness of the Occipital Nerve Stimulation System (ONSS) in treating chronic cluster headache in adults.
The study aims to answer the following questions:
* What adverse events or medical complications occur following ONSS implantation and stimulation?
* Does treatment with the ONSS reduce the frequency of cluster headache attacks compared with baseline?
Participant Involvement
Participants will:
* Undergo implantation of the ONSS device.
* Use the ONSS for a 48-week treatment period.
* Attend scheduled clinic visits for follow-up assessments and device evaluations.
* Maintain a diary documenting cluster headache attacks and use of rescue medications.
* Complete study-related assessments throughout the study period.