A Phase II Clinical Study of Lidocain Pertubation as Treatment for Couples With Unexplained Infertility

Inclusion Criteria: * Female, * 20-40 years of age, * If presence of peritoneal endometriosis they must be of minimal or mild without adhesions (verified by laparoscopy), * Normal menstruation cycle, * Male partner 20-70 years of age, * Male partner, * Normal sperm sample within 5 years (\>20x106/mL, total sperm count \>30x106, normal morphology 5%), * Duration of infertility more than one year, * Signed informed consent Exclusion Criteria: * Treatment with NSAID, corticosteroids or other drugs, which can cause an increased risk of infection, * Clinical signs of PID, * Known hypersensitivity to local anesthetics, * Non-patent fallopian tubes, * Pathological uterine cavity, * Pathological PCT, myoma \> 2 cm diameter, * Any disease or laboratory finding considered of importance by the investigator not to include the patient