METERING DEVICE FOR DISPENSING CONSTANT UNIT DOSES

摘要

A push button metering device comprising a hollow push button (5) defining a predetermined space and being movably mounted on and in communication with a container (1), as well as a resilient member connecting the push button to the container and consisting of a resiliently deformable cylindrical ring (8) with at least one valve (14) for sealing the container outlet, said ring being positioned around a closed cylinder (6) coaxial with the cylindrical ring and secured to the container (1). The device is suitable for administering fluid pharmaceuticals.