A supporting structure for supporting a plurality of sealed medical cartridges is disclosed, comprising a planar supporting plate having a plurality of receptacles for accommodating the sealed cartridges. Retaining protrusions are formed at the bottom ends of the receptacles protruding inward, which are mated with the shoulder portions of the sealed cartridges in such a manner that the shoulder portions of the sealed cartridges are supported on the retaining protrusions of the receptacles and that the upper ends of the sealed cartridges protrude from the upper ends of the receptacles at an upper side of the planar supporting plate, when the sealed cartridges are accommodated upside-down in the receptacles. The inventive nest will be suitable for any nested liquid filling machine without much changes in filling table and general settings.
