Mirena is a hormonal contraceptive that produces these hormones effectively slowing down the growth of endometrial layer. This acts as a birth control device too. Mirena also helps in easing pelvic inflammation and also control (reduce) menstrual bleeding.
3D laparoscopy technology renders the image of parts inside the body in the same 3D format on the screen with depth perception. The surgeon/gynaecologist can clearly understand where the laparoscope is being placed and which tissue is being cut/fixed etc.