IUD hook used in addtion to birth control, Harmonal IUD are used for prevention and treatement of heavy menstrual periods.Endometriosis and chronic pelvic pain. Adenomyosis and dysmenorrheal. Anemia in some cases, use of harmonal IUD may prevent a need for ahysterectomy. Tetra Surgical is manufacturer of surgical instruments. IUD hook is one of our product. Tetra Surgical is manufactuer and supplier of hospital equipments. We are medical equipment suppliers.