Six-Year Study Will Compare Bayer’s Essure With Tubal Ligation

US FDA has accepted a post-approval study plan by Bayer HealthCare for its Essure permanent sterilization device, which is under intense scrutiny in response to adverse events and charges of clinical trial misconduct. The protocol entails a non-randomized, six-year cohort study comparing Essure-implanted women to tubal ligation sterilization subjects.