MULTIPLE DOSE DELIVERY DEVICE WITH MANUALLY DEPRESSIBLE ACTUATOR AND ONE-WAY VALVE FOR STORING AND DISPENSING SUBSTANCES, AND RELATED METHOD

摘要

A dispenser for dispensing a substance has a body defining a variable-volume storage chamber for storing the substance, and a dispensing portion connected with the body and defining a dosage chamber coupled in fluid communication with the storage chamber for receiving substance there from, and an outlet aperture coupled in fluid communication with the dosage chamber. A first valve includes an axially-extending valve seat and an axially-extending flexible valve cover seated on the valve seat and defining a normally-closed, axially-extending seam there between forming a fluid-tight seal between the valve cover and valve seat. The flexible valve cover is movable relative to the valve seat and the seam is connectable in fluid communication with the outlet aperture to allow the passage of substance through the seam and out of the dispenser. A second valve is coupled in fluid communication between the dosage chamber and the storage chamber.