Abstract: An apparatus for manufacturing a medication comprising an ejector unit adapted for ejecting a predefined amount of a drug having a liquid component to a solid carrier substrate. The ejector unit comprises a capillary and a tubular piezoelectric actuator surrounding at least a part of the capillary. The apparatus further comprises a control unit adapted for applying an electric signal to the piezoelectric actuator which, in response to the electric signal, is adapted to generate a compressional wave in the capillary for ejecting the predefined amount of the drug via an orifice of the capillary. Moreover, a method of manufacturing a medication is provided, the method comprising ejecting a predefined amount of a drug having a liquid component to a solid carrier substrate. Furthermore, a medication is provided comprising a solid carrier substrate, and a predefined amount of a drug ejected with a liquid component to the solid carrier substrate by an ejector unit.

Abstract: The treatment, for example the cleaning of holes or recesses in workpieces, is problematic when the holes or recesses have an opening width of below 0.5 mm, and especially when the latter do not penetrate the workpiece (blind bores). In known methods, gas bubbles adhering to the side-walls of holes of this type cannot be removed or liquids situated within the holes cannot be effectively exchanged. With the method according to the invention an effective exchange of the liquid contained in the holes and situated outwith the holes is made possible. For this purpose the liquid treatment means is sprayed as a jet into the holes, said jet having a diameter which is smaller than that of the holes. Furthermore, a device is described for carrying out this method which is characterised by a nozzle with one or several nozzle discharge openings with a diameter below 0.