Package for hydrophilic contact lens

Claim 2

A blister package for a hydrophilic contact lens comprising a base portion and a cover sheet, said base portion including a cavity for containing said contact lens and a flange extending outward around the periphery of said cavity, said cavity being defined by a bottom surface, upstanding side walls and a side wall surface inclined away from said bottom surface, said cover sheet being stripably sealed to said flange around the perimeter of said cavity.

Claim 3

A package for a hydrophilic contact lens maintained in a sterile aqueous solution comprising a molded base having a cavity for containing said contact lens and a flange extending outward around the periphery of said cavity, said cavity being defined by a bottom surface and side wall surfaces extending between said bottom surface and said flange, a portion of said side wall surface being inclined away from said bottom surface to form an obtuse angle with the plane of said bottom surface, and a flexible cover sheet releasably sealed to said flange around the perimeter of said cavity, said cover sheet and said flange adjacent the edge of said inclined side wall surface extending outward to beyond the area of said seal, whereby the unsealed edges of said cover sheet and said flange afford gripping means for separating said cover sheet from said flange to expose said inclined side wall and said cavity.

Claim 4

A package for a hydrophilic contact lens maintained in a sterile aqueous solution comprising a molded base having a cavity for containing said contact lens and a flange extending outward around the periphery of said cavity, said cavity being defined by a bottom surface and side wall surfaces extending between said bottom surface and said flange, a portion of said side wall surface being inclined away from said bottom surface to form an obtuse angle with the plane of said bottom surface, and a flexible cover sheet releasably sealed to said flange around the perimeter of said cavity, said cover sheet and said flange adjacent the edge of said inclined side wall surface extending outward to beyond the area of said seal, whereby the unsealed edges of said cover sheet and said flange afford gripping means for separating said cover sheet from said flange to expose said inclined side wall and said cavity.

Claim 5

The package of Claim 1 or Claim 2 wherein said inclined side wall surface forms an angle of from about 130 to 160° with the plane of said bottom surface.

Claim 6

The package of any one of Claims 1 to 3 wherein the bottom surface of said cavity is flat.

Claim 7

The package of any one of Claims 1 to 4 wherein the inclined side wall surface is flat.

Claim 8

The package of any one of Claims 1 to 5 wherein said cavity is rectangular and is defined by three upstanding side walls and one inclined side wall.

Claim 9

The package of any one of Claims 1 to 3 wherein the bottom surface of said cavity is concave.

Claim 10

The package of any one of Claims 1 to 3 and 7 wherein the inclined side wall surface is concave.

Claim 11

The package of any one of Claims 1 to 3, 7 and 8 wherein said cavity is defined by a semicircular upstanding side wall merging into an inclined side wall.

Claim 12

The package of any one of Claims 1 to 9 wherein said molded base is a thermoformable polypropylene polymer.

Claim 13

11 . The package of any one of Claims 1 to 10 wherein said cover sheet is heat sealed to said flange.

Claim 14

12 . The package of Claim 11 wherein said cover sheet is an adhesive laminate of aluminium foil and polypropylene film.

Claim 15

The package of Claim 11 or Claim 12. wherein said heat seal has a chevron configuration adjacent said unsealed edges of said cover sheet and said flange.