Pediatric dosing dispenser

1. A closure comprising

an inner cap including an inner top wall formed to include a first opening, an inner side wall arranged to extend downwardly from the inner top wall and circumferentially around a central axis, and an inner plug unit coupled to an outer surface of the inner top wall and arranged to extend upwardly away from the inner top wall,

an outer cap including an outer top wall formed to include a second opening, an outer side wall arranged to extend downwardly from the outer top wall and that extends circumferentially about the central axis, and an outer plug unit coupled to a bottom surface of the outer top wall and arranged to extend downwardly away from the top wall, the outer cap being mounted to the inner cap for rotation relative to the inner cap about the central axis from a closed position in which the outer top wall and the inner top wall are spaced apart from one another by a first distance and the inner plug unit and the outer plug unit cooperate to block fluid flow through the first and second openings, to an opened position, in which the outer top wall is spaced apart from the inner top wall by a second distance greater than the first distance and first and second openings are opened to allow fluid to flow therethrough, the outer cap being adapted to receive a syringe to remove a fluid from the chamber when the outer cap is in the opened position, and

an anti-suction feature configured to block formation of a seal between a child's mouth and an upper surface of the outer top wall so that, if the child attempts to apply a suction force on the outer top wall over the second opening, air is drawn into the child's mouth without any fluid being removed through the second opening,

wherein the anti-suction feature includes an anti-suction ring coupled to the upper surface of outer top wall and arranged to surround a perimeter edge of the first opening and the anti-suction ring is formed to include a plurality of slots spaced circumferentially apart from one another around the first opening.

2. The closure of claim 1 , wherein the anti-suction feature further includes a plurality of anti-suction ribs arranged to extend outwardly away from the anti-suction ring toward an outer perimeter of the outer top wall.

3. The closure of claim 2 , wherein the plurality of anti-suction ribs are spaced apart from one another to provide a plurality of airflow recesses therebetween and at least one slot of the plurality of slots formed in the anti-suction ring is aligned with each space provided by the plurality of anti-suction ribs.

4. The closure of claim 3 , wherein the outer top wall is formed to include a plurality of bypass apertures arranged to extend through the outer top wall and that are located circumferentially between neighboring ribs of the plurality of ribs.

5. The closure of claim 4 , wherein the outer side wall is formed to include a plurality of axially-extending slots formed on an inner surface of the outer side wall to allow air to flow between the outer side wall and the inner side wall and through the bypass apertures formed in the outer top wall.

6. The closure of claim 2 , wherein each of the ribs included in the plurality of ribs has a rib height and each of the slots included in the plurality of slots formed in the anti-suction ring has a slot depth that is less than or equal to the rib height.

7. The closure of claim 6 , wherein the anti-suction ring has a ring height that is greater than the rib height.

8. The closure of claim 7 , wherein the rib height is about half of the ring height.

9. The closure of claim 2 , wherein the outer top wall includes an outer perimeter coupled the outer side wall and a concave bowl arranged to slope downwardly toward the inner top wall as the concave bowl extends inward from the outer perimeter toward the central axis.

10. The closure of claim 1 , wherein the outer plug unit includes an outer seal ring that extends circumferentially around the central axis to define a chamber radially inward of the outer seal ring and a first plug that extends downwardly from the outer top wall into the chamber, and

wherein the outer plug unit is entirely below the outer top wall and the outer top wall includes an outer perimeter coupled the outer side wall and a concave bowl arranged to slope downwardly toward the inner top wall as the concave bowl extends inward from the outer perimeter toward the central axis.

11. The closure of claim 10 , wherein the inner plug unit includes an inner seal ring and a second plug, the inner seal arranged to extend upwardly from the inner top wall into the chamber and has a diameter that is less than a diameter of the outer seal ring such that an outer surface of the inner seal ring engages an inner surface of the outer seal ring to block fluid from passing between the outer seal ring and the inner seal ring, and wherein the second plug extends upwardly away from the inner top wall and engages the first plug when the outer cap is in the closed position to block fluid flow out of the chamber, and

wherein the second plug includes an upper cap spaced apart from the inner top wall and a plurality of spacer ribs that interconnect the inner top wall and the upper cap and define a plurality of slots between one another, and the upper cap extends into the first plug when the outer cap is in the closed position to block fluid flow through the chamber.

12. The closure of claim 11 , wherein the first plug and the second plug are spaced apart from one another when the outer cap is in the opened position to allow fluid flow through the plurality of slots and the chamber and out of the second opening in the outer top wall.

13. The closure of claim 1 , further comprising a closure-release mechanism includes first and second lock tabs coupled to an inner surface of the side wall of the outer cap and arranged to extend inwardly toward the central axis, first and second tab blockers fixed in position relative to the outer cap and that engage the first and second lock tabs in the closed position to block rotation of the outer cap relative to the inner cap from the closed position to the opened position until an inward force is applied on the outer side wall of the outer cap sufficient to deform the outer cap and move the first and second lock tabs outwardly away from the first and second tab blockers.

14. A closure comprising

an inner cap including an inner top wall formed to include a first opening, an inner side wall arranged to extend downwardly from the inner top wall and circumferentially around a central axis, and an inner plug unit coupled to an outer surface of the inner top wall and arranged to extend upwardly away from the inner top wall,

an outer cap including an outer top wall formed to include a second opening, an outer side wall arranged to extend downwardly from the outer top wall and that extends circumferentially about the central axis, and an outer plug unit coupled to a bottom surface of the outer top wall and arranged to extend downwardly away from the top wall, the outer cap being mounted to the inner cap for rotation relative to the inner cap about the central axis from a closed position in which the outer top wall and the inner top wall are spaced apart from one another by a first distance and the inner plug unit and the outer plug unit cooperate to block fluid flow through the first and second openings, to an opened position, in which the outer top wall is spaced apart from the inner top wall by a second distance greater than the first distance and first and second openings are opened to allow fluid to flow therethrough, the outer cap being adapted to receive a syringe to remove a fluid from the chamber when the outer cap is in the opened position, and

a child-resistant closure-release mechanism configured to block rotation of the outer cap relative to the inner cap from the closed position to the opened position,

wherein the outer plug unit includes an outer seal ring that extends circumferentially around the central axis to define a chamber radially inward of the outer seal ring and a first plug that extends downwardly from the outer top wall into the chamber.

15. The closure of claim 14 , further comprising an anti-suction feature including an anti-suction ring coupled to the upper surface of outer top wall and arranged to surround a perimeter edge of the first opening and a plurality of anti-suction ribs arranged to extend outwardly away from the anti-suction ring toward an outer perimeter of the outer top wall, wherein the anti-suction ring is formed to include a plurality of slots spaced circumferentially apart from one another around the first opening, and wherein the plurality of anti-suction ribs are spaced apart from one another to provide a plurality of airflow recesses therebetween and at least one slot of the plurality of slots formed in the anti-suction ring is aligned with each space provided by the plurality of anti-suction ribs.

16. The closure of claim 14 , wherein the outer plug unit is arranged entirely below the outer top wall and the outer top wall includes an outer perimeter coupled the outer side wall and a concave bowl arranged to slope downwardly toward the inner top wall as the concave bowl extends inward from the outer perimeter toward the central axis.

17. The closure of claim 15 , wherein the inner plug unit includes an inner seal ring and a second plug, the inner seal arranged to extend upwardly from the inner top wall into the chamber and has a diameter that is less than a diameter of the outer seal ring such that an outer surface of the inner seal ring engages an inner surface of the outer seal ring to block fluid from passing between the outer seal ring and the inner seal ring, and wherein the second plug extends upwardly away from the inner top wall and engages the first plug when the outer cap is in the closed position to block fluid flow out of the chamber.

18. A closure comprising

an inner cap including an inner top wall formed to include a first opening and an inner side wall arranged to extend downwardly from the inner top wall and circumferentially around a central axis,

an outer cap including an outer top wall formed to include a second opening, an outer side wall arranged to extend downwardly from the outer top wall and that extends circumferentially about the central axis, the outer cap being mounted to the inner cap for rotation relative to the inner cap about the central axis from a closed position to an opened position, and

an anti-suction feature coupled to an upper surface of the outer top wall and arranged circumferentially around the second opening and configured to block formation of a seal between a child's mouth and an upper surface of the outer top wall so that, if the child attempts to apply a suction force on the outer top wall over the second opening, air is drawn into the child's mouth without any fluid being removed through the second opening,

wherein the anti-suction feature includes an anti-suction ring coupled to the upper surface of outer top wall and arranged to surround a perimeter edge of the first opening and a plurality of anti-suction ribs arranged to extend outwardly away from the anti-suction ring toward an outer perimeter of the outer top wall.

19. The closure of claim 18 , wherein the inner cap further includes an inner plug unit and the outer cap further includes an outer plug unit, the outer plug unit is arranged entirely below the outer top wall,

wherein the outer plug unit includes an outer seal ring that extends circumferentially around the central axis to define a chamber radially inward of the outer seal ring and a first plug that extends downwardly from the outer top wall into the chamber, and

wherein the inner plug unit includes an inner seal ring and a second plug, the inner seal arranged to extend upwardly from the inner top wall into the chamber and has a diameter that is less than a diameter of the outer seal ring such that an outer surface of the inner seal ring engages an inner surface of the outer seal ring to block fluid from passing between the outer seal ring and the inner seal ring, and wherein the second plug extends upwardly away from the inner top wall and engages the first plug when the outer cap is in the closed position to block fluid flow out of the chamber.