Efficacy of H7-Coil DTMS Compared to H1-Coil DTMS in Subjects With Major Depression Disorder (MDD)

This is a prospective, 6 week, double blind, randomized, controlled, multi-center trial. The study will explore the safety and efficacy of deep brain rTMS (Transcranial Magnetic Stimulation) H7-Coil treatment and demonstrate that it is as good as the FDA cleared, H1-Coil treatment as add-on for a treatment with antidepressant drugs (a bi-therapeutic treatment ) in subjects with major depressive disorder that have been previously unsuccessfully treated with antidepressant medication. Approximately 146 subjects will be enrolled in the study. The study population consists of subjects with MDD who have failed adequate medication treatment and who are in a current depressive episode. The patients will be of all racial, ethnic and gender categories, ranging from 22 to 68 years of age, and have HDRS-21≥20. Outpatients will be recruited from both academic and private research centers. The study duration is 8 weeks, with a 2 week period of screening and baseline, followed by 4 weeks of 5 daily treatments and 2 weeks of biweekly treatments. Mood and mental state will be carefully monitored through standard psychological scales and assessments during the screening and baseline and throughout treatment.