| 摘要 |
Dispenser for dispensing a liquid, in particular a drug, such as for instance eye drops, which dispenser comprises two half portions which can be assembled by means of a snap lock to form a closed chamber adapted to surround a plastic bag containing the liquid, said bag having a constricted portion into which the reservoir of the bag extends, the constricted portion forming a neck with a dosage duct, through which the liquid, after breaking of the constricted portion, may be squeezed by compression of the plastic bag, one wall of the chamber of the dispenser being resilient to such an extent that the plastic bag can be compressed, and the dispenser comprising a shut off for sealing the dosage opening when no liquid is to be supplied. With the object of making the closing means open simultaneously with the compression of the dispenser for squeezing out liquid from the dispenser, the means for sealing the dosage opening are a pair of pincers formed by the two half portions, said pair of pincers being adapted to compress the constricted portion of the plastic bag close to the discharge opening of the dosage duct, at least on one of the half portions of the dispenser the pincers being extended into a rigid tongue-shaped area of the resilient portion of the wall of the chamber and being supported for performing a seesaw motion together with the pincers when pressure is applied on the tongue-shaped area.
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