FIELD: process engineering.
SUBSTANCE: invention relates to device intended for separation storage of medical or pharmaceutical preparation and their mixing fluid prior to use. Device pump piston front section is retained by pump case section. Pump piston pulled in extreme initial position of said pump above tubular insert limits some air space. Pump case wall section is provided with at least one opening. With pump piston fed forward, air escapes outward, bypassing first vessel. Pump front section is sealed over it outer edges relative to tubular inserts by O-ring.
EFFECT: higher sterility and reliability.
4 cl, 4 dwg
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