Patents by Inventor Lee T. Nordan
Lee T. Nordan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20090182422Abstract: A thin foldable intraocular implant specifically configured for installation into the anterior chamber of a phakic or pseudophakic eye has broad positioning flaps that do not apply any substantial pressure against the wall of the eye. It can be rolled for insertion through a corneal incision as small as 2.75 millimeters. The implant is constituted by a two-layered resiliently flexible membrane having a corrective layer of about 50 to 130 microns and an overall thickness of about 150 to 530 microns, that vaults the iris without contacting it. The optic is constituted by a multi-order diffractive (MOD) structure, and is made of silicone, PMMA, hydrogel or hydrophobic acrylate.Type: ApplicationFiled: December 27, 2007Publication date: July 16, 2009Inventors: Lee T. Nordan, G. Michael Morris
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Patent number: 7192444Abstract: An aspheric soft intraocular lens, having an optical power surface, which may have multiple radii portions or aspherical portions, as well as spherical portions, intended to replace the crystalline lens of a patient's eye, in particular after a cataract extraction. Such an aspheric soft lens 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: May 24, 2002Date of Patent: March 20, 2007Assignee: Advanced Medical Optics, Inc.Inventors: Larry W. Blake, Lee T. Nordan
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Patent number: 6797003Abstract: An aspheric soft intraocular lens, having an optical power surface, which may have multiple radii portions or aspherical portions, as well as spherical portions, intended to replace the crystalline lens of a patient's eye, in particular after a cataract extraction. Such an aspheric soft lens 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: December 1, 1993Date of Patent: September 28, 2004Assignee: Pharmacia & Upjohn CompanyInventors: Larry W. Blake, Lee T. Nordan
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Publication number: 20030220687Abstract: A thin foldable intraocular implant specifically configured for installation into the anterior chamber of a phakic or pseudophakic eye has broad positioning flaps that do not apply any substantial pressure against the wall of the eye. It can be rolled for insertion through a corneal incision as small as 2.75 millimeters. The implant is constituted by a two-layered resiliently flexible membrane having a corrective layer of about 50 to 130 microns and an overall thickness of about 150 to 530 microns, that vaults the iris without contacting it. The optic is constituted by a multi-order diffractive (MOD) structure, and is made of silicone, PMMA, hydrogel or hydrophobic acrylate.Type: ApplicationFiled: May 23, 2003Publication date: November 27, 2003Inventors: Lee T. Nordan, G. Michael Morris
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Publication number: 20030097176Abstract: A thin foldable intraocular implant specifically configured for installation into the anterior chamber of a phakic or pseudophakic eye has broad positioning flaps that do not apply any substantial pressure against the wall of the eye. It can be rolled for insertion through a corneal incision as small as 2.75 millimeters. The implant is constituted by a two-layered resiliently flexible membrane having a corrective layer of about 40 microns and an overall thickness of about 200 microns, that vaults the iris without contacting it. The optic is constituted by a multi-order diffractive (MOD) structure.Type: ApplicationFiled: December 30, 2002Publication date: May 22, 2003Inventors: Lee T. Nordan, G. Michael Morris
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Patent number: 6547802Abstract: A surgical blade for use in ophthalmic surgery has a multi-faceted distal end with cutting edges which meet at an angle greater than 90° and preferably 140°, resulting in a blade with a relatively large surface area. An anterior shoulder is positioned intermediate the distal and proximal ends of the blade to direct the blade to dimple down when the blade has been inserted into the cornea a sufficient distance to bring the shoulder into contact with the corneal tissue, allowing the surgeon to make a linear entry into the anterior chamber resulting in a reproducible, leak-free incision by using a straight-in hand motion. The blade is rounded at certain of its lateral edges to avoid snagging the incision when the blade is passed through the cornea.Type: GrantFiled: August 21, 2001Date of Patent: April 15, 2003Inventors: Ravi Nallakrishnan, Lee T. Nordan
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Publication number: 20020183843Abstract: An aspheric soft intraocular lens, having an optical power surface, which may have multiple radii portions or aspherical portions, as well as spherical portions, intended to replace the crystalline lens of a patient's eye, in particular after a cataract extraction. Such an aspheric soft lens 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: ApplicationFiled: May 24, 2002Publication date: December 5, 2002Inventors: Larry W. Blake, Lee T. Nordan
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Patent number: 6152958Abstract: A thin foldable intraocular implant specifically configured for installation into the anterior chamber of a phakic or pseudophakic eye has broad positioning flaps that do not apply any substantial pressure against the wall of the eye. It can be rolled for insertion through a corneal incision as small as 2.75 millimeters. The implant is constituted by a resiliently flexible membrane, with an overall thickness as low as 10 microns, that vaults the iris without contacting it.Type: GrantFiled: December 16, 1998Date of Patent: November 28, 2000Inventor: Lee T. Nordan
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Patent number: 6139559Abstract: A surgical blade for use in ophthalmic surgery has distal cutting edges formed by a pair of anterior-to-posterior bevels which meet at an angle greater than 90.degree. and preferably 140.degree., resulting in a blade with a surface area greater than that of similarly dimensioned prior art blades. An anterior shoulder is positioned intermediate the distal and proximal ends of the blade to direct the blade to dimple down when the blade has been inserted into the cornea a sufficient distance to bring the shoulder into contact with the corneal tissue, allowing the surgeon to make a reproducible, leak-free incision by using a straight-in hand motion. The distal cutting surface is rounded at its lateral edges to avoid snagging the incision when the blade is passed through the cornea.Type: GrantFiled: April 7, 1998Date of Patent: October 31, 2000Inventors: Lee T. Nordan, Ravi Nallakrishnan
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Patent number: 6007747Abstract: An aspheric soft intraocular lens, having an optical power surface, which may have multiple radii portions or aspherical portions, as well as spherical portions, intended to replace the crystalline lens of a patient's eye, in particular after a cataract extraction. Such an aspheric soft lens 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 6, 1995Date of Patent: December 28, 1999Assignee: Pharmacia & Upjohn CompanyInventors: Larry W. Blake, Lee T. Nordan
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Patent number: 5507759Abstract: A process for correcting the focusing aberrance of a patient's eye by sectioning one or more lamellar portions off the external surface of the cornea to either increase or decrease the external curvature of the cornea to an extent sufficient to correct said aberrance. A stabilizing vacuum ring is first placed against the cornea and around the area to be sectioned, a pressure plate presses a portion of the ordinarily curved surface of the cornea to be flat, then a blade is translated across the opening of the ring while the height of the pressure plate is varied. The resulting sinuous path of the blade through the corneal material cuts a section of varying thickness. A set of elliptical cams adjusts the height of the plate in relation to the ring during the translating movement. The cams determine the depth of the resection, and the radius of curvature along the sinuous path. The resected portions of the cornea are discarded.Type: GrantFiled: January 14, 1994Date of Patent: April 16, 1996Inventor: Lee T. Nordan
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Patent number: 5326348Abstract: An intraocular lens, in the form of a disk, intended to replace the crystalline lens of a patient's eye, in particular after cataract extraction, comprises on its distal side, an aspherical sector extending approximately from the midline of the disk over one quarter of the surface thereof. The rest of the distal side is spherical. The radius of curvature of the aspherial sector varies monotonously between the value of the radius of the spherical sectors and a lower value. Such a configuration allows light rays impinging on the intraocular lens to be refracted at different angles and provides both near and distant vision. The discontinuity at transition between the aspherical sector and the spherical sector is blocked out by dark or etched plastic to eliminate glare. The proximal side can either be a convex surface, a concave surface or a plane.Type: GrantFiled: April 12, 1993Date of Patent: July 5, 1994Inventor: Lee T. Nordan
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Patent number: 5236452Abstract: An intraocular lens, in the form of a disk, intended to replace the crystalline lens of a patient's eye, in particular after a cataract extraction, comprises on its distal side an aspherical sector extending approximately from the midline of the disk over one quarter of the surface thereof. The rest of the distal side is spherical. The radius of curvature of the aspherical sector varies monotonously between the value of the radius of the spherical sectors and a lower value. Such a configuration allows light rays impinging on the intraocular lens to be refracted at different angles and provides both near the distance vision. The discontinuity at transition between the aspherical sector and the spherical sector is blocked out by dark or etched plastic to eliminate glare. The proximal side can either be a convex surface, a concave surface or a plane.Type: GrantFiled: November 21, 1991Date of Patent: August 17, 1993Inventor: Lee T. Nordan
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Patent number: 5133749Abstract: An intra-ocular lens for implanting into the posterior capsule after cataract extraction, has a pair of sinuous haptics having greater flexibility near their roots than at their distal ends. A long arcuate distal segment of each haptic espouses the internal radius of the posterior capsule over an arc of at least 15 degrees. Both haptics have a slight backward slant. The haptics facilitate the implantation and retention of the lens.Type: GrantFiled: May 13, 1991Date of Patent: July 28, 1992Inventor: Lee T. Nordan
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Patent number: 5090073Abstract: An apparatus for immobilizing the head of a patient during ocular, facial, or dental surgery comprises a flat cushion headrest bordered by a neck-supporting bulge. Adjustable lateral head-clamping arms incorporate padded headphones. A shroud-supporting frame extends obliquely from each side of the headrest over the patient's chest area, and provides a means for mounting ventilation lines and sensors for patient monitoring.Type: GrantFiled: August 22, 1991Date of Patent: February 25, 1992Inventors: Lee T. Nordan, Roger J. Malcolm
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Patent number: 5074877Abstract: An intraocular lens, in the form of a disk, intended to replace the crystalline lens of a patient's eye, in particular after a cataract extraction, comprises on its distal side an aspherical sector extending approximately from the midline of the disk over one quarter of the surface thereof. The rest of the distal side is spherical. The radius of curvature of the aspherical sector varies monotonously between the value of the radius of the spherical sectors and a lower value. Such a configuration allows light rays impinging on the intraocular lens to be refracted at different angles and provides both near the distance vision. The discontinuity at transition between the aspherical sector and the spherical sector is blocked out by dark or etched plastic to eliminate glare. The proximal side can either be a convex surface, a concave surface or a plane.Type: GrantFiled: September 17, 1990Date of Patent: December 24, 1991Inventor: Lee T. Nordan
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Patent number: 5019099Abstract: An intraocular lens, in form of a disk, intended to replace the crystalline lens of a patient's eye, in particular after a cataract extraction, comprises on its distal side an aspherical sector extending approximately from the midline of the disk over one quarter of the surface thereof. The rest of the distal side is spherical. The radius of curvature of the aspherical sector varies monotonously between the value of the radius of the spherical sectors and a lower value. Such a configuration allows light rays impinging on the intraocular lens to be refracted at different angles and provides both near and distance vision. The discontinuity at transition between the aspherical sector and the spherical sector is blocked out by dark or etched plastic to eliminate glare. The proximal side can either be a convex surface, a concave surface or a plane.Type: GrantFiled: April 16, 1990Date of Patent: May 28, 1991Inventor: Lee T. Nordan
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Patent number: 4917681Abstract: An intraocular lens, in form of a disk, intended to replace the crystalline lens of a patient's eye, in particular after a cataract extraction, comprises on its distal side an aspherical sector extending approximately from the midline of the disk over one quarter of the surface thereof. The rest of the distal side is spherical. The radius of curvature of the aspherical sector varies monotonously between the value of the radius of the spherical sectors and a lower value. Such a configuration allows light rays impinging on the intraocular lens to be refracted at different angles and provides both near the distance vision. The discontinuity at transition between the aspherical sector and the spherical sector is blocked out by dark or etched plastic to eliminate glare. The proximal side can either be a convex surface, a concave surface or a plane.Type: GrantFiled: August 15, 1988Date of Patent: April 17, 1990Inventor: Lee T. Nordan
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Patent number: 4769033Abstract: An intraocular lens, in form of a disk, intended to replace the crystalline lens of a patient's eye, in particular after a cataract extraction, comprises on its distal side an aspherical sector extending approximately from the midline of the disk over one quarter of the surface thereof. The rest of the distal side is spherical. The radius of curvature of the aspherical sector varies monotonously between the value of the radius of the spherical sectors and a lower value. Such a configuration allows light rays impinging on the intraocular lens to be refracted at different angles and provides both near and distance vision. The discontinuity at transition between the aspherical sector and the spherical sector is blocked out by dark or etched plastic to eliminate glare. The proximal side can either be a convex surface, a concave surface or a plane.Type: GrantFiled: August 24, 1987Date of Patent: September 6, 1988Inventor: Lee T. Nordan
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Patent number: D471610Type: GrantFiled: January 22, 2002Date of Patent: March 11, 2003Inventors: Edward A. Mugica, Richard F. Mugica, Jr., Lee T. Nordan, Steve Sisley