Lydia Model T Cu 380 A IUDs offer almost complete protection against pregnancy, having a shelf life of 7 years and it remains effective for a period of 10 years. Correctly inserted, Lydia Model T Cu 380 A IUDs are safe for women at low risk for sexually transmitted diseases.
The side arms are flexible and shaped in such a way as to keep the Lydia Model T Cu 380 A IUD adjacent to the fundus, without stretching the uterine cavity or touching the cornua. The contraceptive action of the device is probably due to a number of foreign body reactions with the uterine endometrium and the presence of metallic copper.
Mechanism of Action: Copper IUDs act by greatly reducing the likelihood of fertilization. Data and analysis indicate that the main anti-fertility effect of copper bearing IUDs involve inhibition of egg or sperm transport and/or the capacity of sperm to fertilize egg. Reduced gametic transport and capacitation inhibits fertilization and occurs before the ovum reaches the uterine cavity from the copper wire and copper sleeves enhance the contraceptive effect of Copper T 380 A.