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US 8,757,367 B2Granted
Pressure-venting container for disinfection and storage of contact lenses
AssigneeNovartis AG
InventorsLynn Cook Winterton, Jack C. White
Life of this patent
Estimating the term…
Abstract
A lens care system and method for venting gas to release pressure from a container, such as generated in peroxide-based lens treatment. A seal formed between a deformable cap and a container cup prevents release of liquid, but deformation of the cap under the influence of pressure generated within the container temporarily releases the seal to permit venting of gas.
Claims16
A lens care container comprising:
- a container cup defining an interior chamber accessible through an opening bounded by a rim;
- and
- a cap removably attachable to the container cup to cover the opening, the cap comprising a deformable panel and a resilient sealing lip, wherein the resilient sealing lip projects downward from the interior face of the deformable panel, wherein the deformable panel is the top panel of the cap and has an annual or ring-shape section of decreased material thickness, wherein the container cup comprises a first thread profile and the cap comprises a second thread profile interengagable with the first thread profile to secure the cap to the container, wherein at least one of the first and second thread profiles comprise a split thread profile having an unthreaded segment defining a gas venting channel for allowing venting of gas therethrough, wherein the sealing lip engages and seals against the rim of the container cup when the deformable panel is substantially undeformed, and allows venting of gas between the sealing lip and the rim of the container cup when the panel is deformed.
A lens care container comprising:
- a container cup consisting essentially of a unitary, integral molding, and defining an interior chamber for receiving a lens care solution;
- and
- a cap for removable attachment to the container cup to seal the lens care solution within the interior chamber, the cap consisting essentially of a unitary, integral molding;
- wherein the cap further comprises a deformable panel and the sealing lip of the cap seals against the rim when the deformable panel is in a substantially undeformed state, and permits venting of gas therebetween when the deformable panel is in a deformed state, wherein the deformable panel is the top panel of the can;
- wherein the container cup comprises a first thread profile and the cap comprises a second thread profile interengagable with the first thread profile to secure the cap to the container, wherein at least one of the first and second thread profiles comprise a split thread profile having an unthreaded segment defining a gas venting channel for allowing venting of gas therethrough, wherein an interface between the cap and the container cup upon closure of the cap onto the container cup permits venting of gas from the interior chamber.
2 more elements
Dependencies are inferred from the claim text.