Absolute: Malignant diseases of the genital tract; Vaginal bleeding; Pregnancy; Past history of ectopic pregnancy or predisposing factors; Infections of the genital tract; Sexually transmitted diseases during the last 12 months (except bacterial vaginitis, repeated herpes infection hepatitis B); Abortion with infection during the last 3 months, pelvic inflammatory disease (PID); Uterine malformations (congenital or acquired); Allergy to copper.
Relative: Valvular heart disease; Anaemia; Coagulation disorders; Anti-inflammatory treatment; Wilson's disease; Multiple sexual partners; Nulliparity.