Patents Assigned to Pharmacia Iovision, Inc.
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Patent number: 5772667Abstract: An intraocular lens injector compresses an intraocular lens by rolling the lens into a tight spiral and injects the compressed lens though a relatively small incision in the eye, approximately 2-3 millimeters in length, resulting from a phacoemulsification procedure. The intraocular lens is inserted into a receiving channel of the injector in an uncompressed state and is urged into a cylindrical passageway. As the intraocular lens advances into the cylindrical passageway, the lens will roll upon itself into a tightly rolled spiral within the confines of the cylindrical passageway. An insertion rod is inserted into an open end of the cylindrical passageway and advances the compressed lens down the passageway. As the lens exits the passageway and enters the eye, the lens will expand back to its uncompressed state.Type: GrantFiled: November 14, 1996Date of Patent: June 30, 1998Assignee: Pharmacia Iovision, Inc.Inventor: Larry W. Blake
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High refractive index hydrogels prepared from polymers and copolymers of N-benzyl-N-methylacrylamide
Patent number: 5717049Abstract: Novel biocompatible, high strength hydrogels useful in intraocular lenses are provided which are optically transparent, have high refractive indices and possess long term stability. The hydrogels are prepared from cross-linked copolymers of N-benzyl-N-methylacrylamide.Type: GrantFiled: March 25, 1996Date of Patent: February 10, 1998Assignee: Pharmacia Iovision, Inc.Inventors: Xiugao Liao, Yading Wang, Stephen Q. Zhou -
Patent number: 5674435Abstract: A lens, having an optical power surface, which may have multiple radii portions or aspherical portions as well as spherical portions, is molded in a coined mold. A pair of core pins, positioned within the mold cavity during the lens forming process, will produce a pair of haptic-mounting holes within the lens. As the lenses are subsequently tumbled to remove flash, indentations will form adjacent to the haptic-mounting holes. These indentations allow for tangential attachment of the haptic to the lens which, in turn, enables maximum flexibility without exceeding the width of the optic.Type: GrantFiled: June 5, 1995Date of Patent: October 7, 1997Assignee: Pharmacia Iovision, Inc.Inventor: Larry W. Blake
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Patent number: 5643275Abstract: An intraocular lens injector compresses an intraocular lens by rolling the lens into a tight spiral and injects the compressed lens though a relatively small incision in the eye, approximately 2-3 millimeters in length, resulting from a phacoemulsification procedure. The intraocular lens is inserted into a receiving channel of the injector in an uncompressed state and is urged into a cylindrical passageway. As the intraocular lens advances into the cylindrical passageway, the lens will roll upon itself into a tightly rolled spiral within the confines of the cylindrical passageway. An insertion rod is inserted into an open end of the cylindrical passageway and advances the compressed lens down the passageway. As the lens exits the passageway and enters the eye, the lens will expand back to its uncompressed state.Type: GrantFiled: June 6, 1995Date of Patent: July 1, 1997Assignee: Pharmacia Iovision, Inc.Inventor: Larry W. Blake
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Patent number: 5589024Abstract: A lens, having an optical power surface, which may have multiple radii portions or aspherical portions as well as spherical portions, is molded in a coined mold. A pair of core pins, positioned within the mold cavity during the lens forming process, will produce a pair of haptic-mounting holes within the lens. As the lenses are subsequently tumbled to remove flash, indentations will form adjacent to the haptic-mounting holes. These indentations allow for tangential attachment of the haptic to the lens which, in turn, enables maximum flexibility without exceeding the width of the optic.Type: GrantFiled: June 5, 1995Date of Patent: December 31, 1996Assignee: Pharmacia Iovision, Inc.Inventor: Larry W. Blake
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Patent number: 5507806Abstract: An improved multi-faceted intraocular lens with a main optical element having a plurality of optical elements. The flexible, thin multi-faceted intraocular lens is made of an optical-grade soft biocompatible material, such as a flexible acrylic material, a hydrophilic material, or a silicone material. The thin, flat, multi-faceted intraocular lens may enable implantation of the lens through an intraocular lens injector having an injection tube with a diameter of approximately 1 mm to 4 mm. The plurality of optical elements each may have the same or differing diopter powers. Additionally, the plurality of optical elements may be aligned to form a multi-focal lens. Further, the optical elements each may be selected from a group consisting of toric elements, aspheric elements, and spherical elements depending upon the type of correction desired. Lastly, the multi-faceted intraocular lens may be effective in the treatment of age-related macular degeneration.Type: GrantFiled: May 13, 1994Date of Patent: April 16, 1996Assignee: Pharmacia Iovision, Inc.Inventor: Larry W. Blake