Patent ID: 8683995

Claim:
An internally pierced formed blister comprising: a blister formed from a stretched flexible film material into a recess with an open end; a pierceable surface sealed to the open end of the blister to form an internal chamber enclosed by the formed recess; and a piercing nozzle wholly contained in the internal chamber, the piercing nozzle comprising: a base comprising an upper surface, a lower surface and a body, an elongated, substantially cylindrical member comprising exterior walls and projecting from the base at a first end and forming a swirl chamber and a discharge nozzle at a second end opposite the base attachment end; a solid central column in the interior of the elongated member, extending from the base to the swirl chamber; one or more internal channels formed in the interior of the elongated member between the central column and the exterior walls and providing a fluid connection between the base and the swirl chamber, and one or more inlet openings in the upper surface of the base and one or more inlet channels providing a fluid connection from the one or more inlet openings to the one or more internal channels in the elongated member to provide a fluid path from the internal chamber, through the base, into the internal channels of the piercing nozzle, through the swirl chamber and out the discharge nozzle.