10 Medical devices for breast cancer and breast precancer diagnosis and treatment and for the diagnosis and treatment of breast conditions, namely catheters, stents, aspirator cups, dilators, and other tools for performing breast duct access, 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 breast duct access devices for access, fluid infusion, and fluid retrieval; medical equipment for use in fluid infusion and fluid retrieval from the breast duct; medical supply kits containing, namely, breast duct access catheters, microcatheters, stents, dilators, endoscopes, ductoscopes, nipple aspirators, and breast duct access devices for access, fluid infusion, and fluid retrieval, to perform diagnosis and the treatment of breast cancer