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US 2010/0300902 A1Published application
Hydrogel contact lenses and package systems and production methods for same
AssigneeCooperVision International Holding Company, LP
InventorJ. Christopher Marmo
Life of this patent
Estimating the term…
Abstract
Contact lenses ready for use in an eye are provided including a contact lens body containing a hydrophilic polymeric component and a water soluble polymer component. Such contact lenses, which preferably are wet cast molded, are particularly useful as disposable or single use lenses. New contact lens packaging systems and production methods are also provided.
Claims18
A contact lens package, comprising:
- a cavity;
- a single use disposable hydrogel contact lens disposed in the cavity, the contact lens comprising a cast molded contact lens body comprising (i) a hydrophilic polymeric material obtained from polymerization of a monomer mixture comprising a hydrophilic monomer selected from the group consisting of hydroxyalkyl acrylates, hydroxyalkyl methacrylates, N-vinyl pyrrolidone, acrylamides, vinyl alcohol, hydrophilic polyurethane precursors, glycerol acrylates, glycerol methacrylates, acrylates, methacrylates, and mixtures thereof;
- and (ii) a polyvinyl pyrrolidone polymer immobilized in the contact lens body by the hydrophilic polymeric material;
- a sterile packaging liquid disposed in the cavity and in contact with the contact lens, the packaging liquid including a separate amount of a polyvinyl pyrrolidone polymer;
- and
- a seal surrounding the cavity to maintain the contact lens in a sterile environment.
3 more elements
Dependencies are inferred from the claim text.