Patent ID: 8297477

Claim:
A dosing device for dosing small-particulate pharmaceutical preparations, comprising: a base including: (i) a first feed opening through which the small-particulate pharmaceutical preparation is sourced, and (ii) a second feed opening through which a dose of the small-particulate pharmaceutical preparation is dispensed, wherein the first and second feed openings are disposed radially about an axis of rotation (A) extending through the base; a rotary valve assembly being rotatable, by way of user-initiated twisting, within the base frame about the axis of rotation to at least one filling position and at least one dispensing position, the rotary valve including at least one dosing unit having at least one dosing chamber, which includes an inlet/outlet opening disposed along an axis that is transverse to the axis of rotation, wherein: (i) the inlet/outlet opening aligns with, and receives into the dosing chamber, a defined partial amount of the preparation through the first feed opening of the base when the rotary valve is rotated within the base to the at least one filling position, and (ii) the inlet/outlet opening aligns with and discharges the defined partial amount of the preparation from the dosing chamber through the second feed opening of the base when the rotary valve is rotated within the base to the at least one dispensing position; and a dosing adjustment device disposed within the rotary valve assembly and including a longitudinally extending piston having an orientation parallel to, and slidable in a direction parallel to, the axis of rotation, wherein an end face of the piston forms an axially movable wall of the at least one dosing chamber in order to simultaneously adjust: (i) a volume of the at least one dosing chamber, and (ii) a size of the inlet/outlet opening of the dosing chamber, thereby adjusting the defined partial amount of the preparation to be dispensed.