Patent ID: 7290573
Filing Date: 2007-11-06
Classification: A45D,A61M,B65D,G01F

Abstract:
1. A dispenser adapted to be filled with a substance by an apparatus including at least (i) a needle for piercing the dispenser and introducing the substance through the needle and into the dispenser, and (ii) an energy source for thermally resealing an aperture in the dispenser after withdrawal of the needle therefrom, the dispenser comprising: a body defining a chamber for receiving the substance; a one-way valve mounted on the body and including an axially-elongated valve seat, and an axially-elongated flexible valve member secured to the valve seat and defining a normally-closed valve opening at the interface of the valve member and valve seat that is connectable in fluid communication with the chamber; a piston mounted within the body and movable axially therethrough for varying the volume of the chamber upon dispensing substance from the chamber through the one-way valve; and a resealable stopper in fluid communication with the chamber and penetrable by the needle for introducing the substance through the stopper and into the chamber, and including a penetrable region that is fusible in response to the application of thermal energy from the energy source thereto to hermetically seal an aperture in the penetrable region after removing the needle therefrom.