System of loading beneficial agent to a prosthesis by fluid-jet

A system for loading beneficial agent onto a prosthesis for delivery within a lumen, the system comprising:

• a holder for supporting a prosthesis to be deployed within a lumen;
• a fluid-dispenser having a dispensing element capable of dispensing beneficial agent in discrete droplets, each droplet having a controlled trajectory, the dispensing element and the holder being movable relative to each other;
• a driver for creating relative movement between the dispensing element and the holder;
• a controller in communication with the driver to define a dispensing path for dispensing discrete droplets of beneficial agent in a raster format, the controller also in communication with the dispensing element to selectively dispense beneficial agent from the dispensing element to a predetermined portion of a prosthesis supported by the holder along the dispensing path;
• and
• a beneficial agent detector in communication with the controller configured to determine an amount of beneficial agent loaded on a prosthesis, the beneficial agent detector being configured to image the prosthesis to determine an amount of identifiable marker loaded onto the prosthesis to determine a corresponding amount of beneficial agent loaded to the prosthesis.