The present inventions relate to compositions and methods for imaging and treating atherosclerotic diseases, pathogen infections, and tumors by administering actively targeting magnetic nanoparticles. Such an intermediate wall 301 partitioning the ink tank chamber 11 into two space parts 11a and 11b placed side by side in an ink injection direction is disposed in the ink tank chamber 11 and is formed with a through part 301a through which ink can be injected. Interfaces are provided for receiving and communicating the one or more orders from the user to the one or more qualified service providers. The disclosed solution, kit and method of subcutaneous delivery can be used for a variety of surgical procedures including liposuction, mastectomy and others. Other aspects and embodiments comprise related computer systems and software. The method further includes distributing, by the processing device, the replicated data to the at least one of the mobile devices in the immediate mode when the at least one of the mobile devices is within the pre-defined range.