 Twenty-five subjects for this study will be recruited from patients who have requested a form of permanent sterilization, and who, after considering all the options, choose the trans-cervical hysteroscopic sterilization for this end. Any subject who is deemed suitable for the micro-insert hysteroscopic sterilization system Essure micro-insert system, Conceptus Incorporated, Mountain View, California placement will be offered the opportunity to participate in the study. Consent will be documented on a Mayo Clinic patient consent form at the time the decision is made to schedule the procedure. 