10 medical devices for aiding in the intraductal procedures of infusion, collection and aspiration, namely, catheters, stents, aspirator cups, dilators, and other tools for performing breast duct access, namely breast duct access catheters, microcatheters, stents, dilators, endoscopes, ductoscopes, nipple aspirators, and generally breast duct access devices for access, fluid infusion and fluid retrieval, to perform diagnosis and treatment of breast cancer and other breast conditions, and medical supply kits comprising such devices