Too slow recruitment rate

The main purpose of the study is to evaluate the impact of treatment with the Chordate System S020 (medical device) on acute migraine headache pain.

One single migraine attack will be treated either with the Chordate System S020 or with Chordate System in placebo mode.

After a screening visit, up to 3 months before treatment, eligible subjects will be asked to return to the center at the onset of their next moderate to severe migraine attack. Subjects will be re-checked for eligibility, randomized and treated at the center (treatment visit). The subjects will record their response over the next 48 hours using a diary card. A follow-up visit will be scheduled 3 to 7 days after the treatment. In addition the subjects will be contacted within 24 to 48 hours after treatment initiation via a telephone contact to discuss their health including new or ongoing AEs.

Inclusion Criteria:

• Subjects with migraine, with or without aura according to International Headache Society (IHS) classification (International Classification of Headache Disorders [ICHD]-III beta).
• History of 1 to 6 migraine attacks per month for at least 12 previous months.
• At least 50% of previous migraine attacks had moderate or severe pain intensity.
• History of at least 48 hours of freedom from headache between migraine attacks.
• The majority of the previous untreated migraine attacks lasted at least 8 hours.
• Migraine onset before the age of 50 years.

Exclusion Criteria:

• History (within one year prior to inclusion into this clinical investigation) of 15 or more headache days per month (i.e. headaches of any kind).
• More than 6 days per month with non-migraine headaches (within one year prior to inclusion into this clinical investigation).
• Unable to distinguish between migraine headaches and other headache types at the onset of a migraine attack.
• Treatment with Botox in the head/neck area within 6 months of the screening visit, or between the screening and treatment visit.
• Previously treated with an implantable stimulator or any implantable devices in the head and/or neck.
• Pronounced anterior septal nasal deviation.