A base body for cleaning or disinfecting a medical product includes a plurality of nozzles for releasing a cleaning medium. The base body is of a disc-based construction consisting of a plurality of plates arranged in succession. A cover plate can be connected to a supply line for a cleaning medium. A distributor plate is fluidically downstream from the cover plate including inlet lines. A nozzle plate is provided with the nozzles being fluidically connected to the inlet lines and open towards a face of the nozzle plate. An end cover plate is fluidically downstream from the cover, distributor and nozzle plate. The cover and nozzle plate each have a central through-clearance which is of a shape corresponding to the articles peripheral contour, where the nozzles are arranged lined up in succession along the inner periphery of the nozzle plate and being open towards the through-clearance.
