The invention relates to a drip chamber for an infusion device and an infusion device having such a drip chamber, by means of which medical solutions can be fed to a patient, such as infusion solutions for chemotherapy. Here, the reactive gas supply unit includes an injector base, which is disposed at a location more recessed inside the dielectric plate than a wall surface of the dielectric plate facing the holding stage. Further, the example method includes calculating, using a programmed processor, an accumulated value that defines a range. The drill-bit comprises a plurality of polycrystalline diamond cutters on the blades provided in a first position for cutting the hard structure as the drilling-bit rotates in the first direction, and a plurality of up-drill PDC cutters provided in a second position for cleaning the hole as the drill-bit rotate in the second direction to exit the hole. In another aspect, a standoff is defined between the substrates setting the substrates apart a desired distance, compensating for any surface irregularities, increasing thermal separation, and increasing interconnect flexibility. 5 to about 20 parts by weight of a photo-acid generator, about 10 to about 70 parts by weight of a novolac resin containing a hydroxyl group, about 1 to about 40 parts by weight of a cross-linker that comprises an alkoxymethylmelamine compound, and about 10 to about 150 parts by weight of a solvent.