Chemical Sterilizing Patents (Class 514/840)
  • Patent number: 11717591
    Abstract: Contact lens treatment systems and methods for disinfecting contact lenses are described. These systems and methods utilize a coated catalytic disc, which contains a support disc and a manganese oxide present on at least a portion of the support disc. The coated catalytic disc contains 300 ?g to 1800 ?g of manganese, often in the form of manganese dioxide.
    Type: Grant
    Filed: November 29, 2018
    Date of Patent: August 8, 2023
    Assignee: Better Vision Solutions LLC
    Inventor: Lynn Winterton
  • Patent number: 8865776
    Abstract: The use of low molecular weight amino alcohols in ophthalmic compositions is described. These compounds have been found to enhance the efficacy of anti-microbial preservatives.
    Type: Grant
    Filed: September 18, 2013
    Date of Patent: October 21, 2014
    Assignee: Alcon Research, Ltd.
    Inventor: Bahram Asgharian
  • Patent number: 8062607
    Abstract: The present invention provides a lens care kit for disinfecting and cleaning contact lenses. The lens care kit of the invention allows customers to visually identify when their lenses are disinfected, clean, and ready to wear. The invention is relied on color change to indicate the readiness of disinfection and cleaning of contact lenses.
    Type: Grant
    Filed: July 13, 2007
    Date of Patent: November 22, 2011
    Assignee: Novartis AG
    Inventors: Jennifer Dawn Lane, Stephen Raymond Perreault, Elizabeth Hickson Beaullieu
  • Patent number: 7837934
    Abstract: Packaging systems for storing ophthalmic devices such as contact lenses and to methods for packaging such ophthalmic devices with solutions to improve the comfort of the lenses during wear are disclosed. A packaging system includes an ophthalmic device stored in an aqueous packaging solution comprising a substantially water-soluble silicone-containing surfactant. Such solutions are retained on the surface of an unused lens for extended periods of time, resulting in surface modification that persists in the eye, which may provide significant improvement in the wetting properties of fresh contact lenses used for the first time and, moreover, even several hours after lens insertion, preventing dryness and improving lubricity.
    Type: Grant
    Filed: October 27, 2008
    Date of Patent: November 23, 2010
    Assignee: Bausch & Lomb Incorporated
    Inventors: Jeffrey G. Linhardt, Jay F. Kunzler
  • Patent number: 7615523
    Abstract: The present invention relates to contact lens care product comprising dexpanthenol. The invention similarly relates to the usage of a contact lens care compositions of this kind for cleaning and optionally disinfecting contact lenses.
    Type: Grant
    Filed: October 6, 2006
    Date of Patent: November 10, 2009
    Assignee: Novartis AG
    Inventors: Peter Schwind, Anton Scherer
  • Patent number: 7560421
    Abstract: A method of disinfecting a contact lens is provided, including the steps of preparing a disinfecting liquid which contains hydrogen peroxide and at least one metal phthalocyanine compound dispersed or dissolved in an aqueous medium, immersing the contact lens in the disinfecting liquid, and irradiating the disinfecting liquid in which the contact lens is immersed with a light.
    Type: Grant
    Filed: August 14, 2003
    Date of Patent: July 14, 2009
    Assignee: Menicon Co., Ltd.
    Inventors: Kazuhiko Nakada, Kotaro Sakanishi
  • Patent number: 7550418
    Abstract: An buffered aqueous contact lens disinfecting solution having much lower concentration of disinfecting agents, and less irritating to the eye. The solutions have a tonicity of 200 to 450 mOsm/kg, a pH of between 6 and 8, and a concentration of chloride ions below 1500 ppm. Despite having less than 1 ppm of antimicrobial, the solutions are effective against C. albicans within 15 minutes of contact.
    Type: Grant
    Filed: November 25, 2003
    Date of Patent: June 23, 2009
    Assignee: Novartis AG
    Inventors: Fu-Pao Tsao, Karen Frances Lindley
  • Patent number: 7488706
    Abstract: A multi-purpose contact lens care solution having high activity against fungi and certain bacteria comprising, in liquid aqueous medium, an alkylamine having the following formula, where R1 is a C13-17 alkyl, and R2 and R3 are each independently H or —CH3, and a non-ionic surfactant. The solution may optionally also include additional antimicrobial components, a buffer component, a viscosity inducing component, a surfactant, taurine, propylene glycol and/or a tonicity component. This solution additionally prevents losses in ocular tissue membrane integrity during contact lens wear.
    Type: Grant
    Filed: September 25, 2006
    Date of Patent: February 10, 2009
    Assignee: Advanced Medical Optics, Inc.
    Inventor: Zhi-Jian Yu
  • Patent number: 7419944
    Abstract: Compositions effective as disinfecting solutions for ophthalmic devices such as contact lenses are provided. The compositions include a microbicide, preferably polyhexamethylene biguanide or alexidine, and a water soluble salt of a bis-aminopolyol, preferably 1,3-bis(tris[hydroxymethyl]methylamino)propane, as a buffering agent.
    Type: Grant
    Filed: November 29, 2001
    Date of Patent: September 2, 2008
    Assignee: Novartis AG
    Inventors: Mary Mowrey-McKee, Marc Ajello
  • Patent number: 7157412
    Abstract: A multi-purpose contact lens care solution having high activity against fungi and certain bacteria comprising, in liquid aqueous medium, an alkylamine having the following formula, where R1 is a C13-17 alkyl, and R2 and R3 are each independently H or —CH3, and a non-ionic surfactant. The solution may optionally also include additional antimicrobial components, a buffer component, a viscosity inducing component, a surfactant, taurine, propylene glycol and/or a tonicity component. This solution additionally prevents losses in ocular tissue membrane integrity during contact lens wear.
    Type: Grant
    Filed: April 7, 2004
    Date of Patent: January 2, 2007
    Assignee: Advanced Medical Optics, Inc.
    Inventor: Zhi-Jian Yu
  • Patent number: 7135442
    Abstract: The present invention relates to contact lens care product comprising dexpanthenol. The invention similarly relates to the usage of a contact lens care compositions of this kind for cleaning and optionally disinfecting contact lenses.
    Type: Grant
    Filed: January 11, 2002
    Date of Patent: November 14, 2006
    Assignee: Novartis AG
    Inventors: Peter Schwind, Anton Scherer
  • Patent number: 7105473
    Abstract: Multi-purpose solutions for contact lens care provide substantial lens wearer/user comfort and/or acceptability, with minimal, if any, corneal epithelial punctate fluorescein staining. Such solutions may include an aqueous liquid medium; an antimicrobial component comprising polyquarternium-1 and a hexamethylene biguanide polymer having a number average molecular weight in the range of from about 4,000 to about 45,000; a surfactant component, preferably a poly(oxyethylene)-poly(oxypropylene) block copolymer surfactant, in an effective amount; a buffer component in an effective amount; a viscosity-inducing component, preferably selected from cellulosic derivatives, in an effective amount; and a tonicity component in an effective amount. Such solutions have substantial performance, comfort and acceptability benefits, which, ultimately, lead to ocular health advantages and avoidance of problems caused by contact lens wear.
    Type: Grant
    Filed: June 13, 2005
    Date of Patent: September 12, 2006
    Assignee: Advanced Medical Optics, Inc.
    Inventors: Robert Glick, Stanley W. Huth, Zhi-Jian Yu, Charles H. Powell
  • Patent number: 7045095
    Abstract: The use of low molecular weight amino alcohols in ophthalmic compositions is described. These compounds have been found to enhance the efficacy of anti-microbial preservatives.
    Type: Grant
    Filed: June 28, 2005
    Date of Patent: May 16, 2006
    Assignee: Alcon Manufacturing, Ltd.
    Inventor: Bahram Asgharian
  • Patent number: 7025958
    Abstract: The use of amidoamines to treat or prevent infections attributable to Acanthamoeba and fungi is described. The amidoamines are highly effective against both Acanthamoeba and fungi, and are less toxic to delicate tissues that may become infected with these types of microorganisms (e.g., the cornea).
    Type: Grant
    Filed: November 27, 2001
    Date of Patent: April 11, 2006
    Assignee: Alcon, Inc.
    Inventors: Ronald L. Schlitzer, Nissanke L. Dassanayake, Ruth Ann Rosenthal, Sally L. Buck
  • Patent number: 7022654
    Abstract: A composition for disinfecting a contact lens comprising an effective disinfecting amount of hydrogen peroxide and a surfactant comprising a copolymer of hydrophobe and hydrophile blocks the structure: HO-(hydrophobe)x-(hydrophile)y-(hydrophobe)x-H or HO-(hydrophile)y-(hydrophobe)x-(hydrophile)y-H where x and y are integers reflecting the respective hydrophile and hydrophobe blocks of said copolymer; and the hydrophile component of the block copolymer constitutes less than 50 weight percent of the block copolymer. The block copolymer has a Ross-Miles foam height (ASTM designation D-1173-53; 0.1%, at 50° C.) of less than 1 mm.
    Type: Grant
    Filed: September 26, 2001
    Date of Patent: April 4, 2006
    Assignee: Novartis AG
    Inventor: Fu-Pao Tsao
  • Patent number: 6962693
    Abstract: Alkylpolypropyleneoxide amidotriamines having antimicrobial activity are described. The compounds are useful as antimicrobial preservatives in various types of pharmaceutical compositions. Ophthalmic compositions containing these compounds as disinfecting agents or preservatives are also described.
    Type: Grant
    Filed: November 30, 2004
    Date of Patent: November 8, 2005
    Assignee: Alcon, Inc.
    Inventors: Nissanke L. Dassanayake, Ronald L. Schlitzer
  • Patent number: 6949218
    Abstract: The use of low molecular weight amino alcohols in ophthalmic compositions is described. These compounds have been found to enhance the efficacy of anti-microbial preservatives.
    Type: Grant
    Filed: October 22, 2001
    Date of Patent: September 27, 2005
    Assignee: Alcon Manufacturing, Ltd.
    Inventor: Bahram Asgharian
  • Patent number: 6939511
    Abstract: A method and composition for disinfecting a contact lens is disclosed. The method includes treating a lens with an aqueous solution having reduced toxicity to the eye which contains an effective amount of a monoperphthalic acid compound in a concentration of less than about 0.5% by weight of the solution. The lens disinfecting solution is capable of disinfecting contact lenses without irritating the eye due to reduced toxicity of the composition.
    Type: Grant
    Filed: April 2, 2003
    Date of Patent: September 6, 2005
    Assignee: Novartis AG
    Inventor: Fu-Pao Tsao
  • Patent number: 6930077
    Abstract: Multi-purpose solutions for contact lens care provide substantial lens wearer/user comfort and/or acceptability, with minimal, if any, corneal epithelial punctate fluorescein staining. Such solutions may include an aqueous liquid medium; an antimicrobial component comprising polyquarternium-1 and a hexamethylene biguanide polymer having a number average molecular weight in the range of from about 4,000 to about 45,000; a surfactant component, preferably a poly(oxyethylene)-poly(oxypropylene) block copolymer surfactant, in an effective amount; a buffer component in an effective amount; a viscosity-inducing component, preferably selected from cellulosic derivatives, in an effective amount; and a tonicity component in an effective amount. Such solutions have substantial performance, comfort and acceptability benefits, which, ultimately, lead to ocular health advantages and avoidance of problems caused by contact lens wear.
    Type: Grant
    Filed: September 10, 2003
    Date of Patent: August 16, 2005
    Assignee: Advanced Medical Optics, Inc.
    Inventors: Robert Glick, Stanley W. Huth, Zhi-Jian Yu, Charles H. Powell
  • Patent number: 6849253
    Abstract: Water-soluble borate-polyol complexes are useful as buffers and/or antimicrobials in aqueous ophthalmic compositions, including those containing polyvinyl alcohol. These compositions have greater antimicrobial activity than comparable compositions containing typical borate buffers and unexpectedly increase the antimicrobial efficacy of other antimicrobial agents when used in combination. In addition, use of the borate-polyol complexes avoids the incompatibility problem typically associated with the combination of borate buffer and polyvinyl alcohol; therefore, the compositions disclosed herein may also contain polyvinyl alcohol.
    Type: Grant
    Filed: November 22, 2002
    Date of Patent: February 1, 2005
    Assignee: Alcon Manufacturing, Ltd.
    Inventors: Masood Chowhan, Nissanke L. Dassanayake
  • Patent number: 6793941
    Abstract: Benzyldimethyl{2-[2-(p-1,1,3,3-tetramethylbutylphenoxy)ethoxy]ethyl} ammonium chloride (BDT) forms the basis of contact lens solutions that are unusually effective at reducing the number and wide variety of pathogenic microorganisms that may infect rigid gas permeable or soft contact lenses. Furthermore, it has been discovered that natural occurring compounds alone and in combination with chemical agents can be used in ophthalmic solutions such as contact lens solution to enhance and complement their anti-microbial, cleaning and wetting activity or to reduce irritation to the eye. The basic contact lens solution comprises an effective concentration of BDT (preferably 1 to 100 parts per million), with naturally occurring plant products possessing activities complementary to BDT, in an isotonic diluent buffered with a physiologically acceptable buffer to a physiologically natural range.
    Type: Grant
    Filed: November 13, 2000
    Date of Patent: September 21, 2004
    Assignee: Natural Disinfectant Technologies, Inc.
    Inventors: Chris De Bruijn, F. Richard Christ, Anthony J. Dziabo, Joseph Vigh
  • Publication number: 20040071591
    Abstract: A method and composition for disinfecting a contact lens is disclosed. The method includes treating a lens with an aqueous solution having reduced toxicity to the eye which contains an effective amount of a monoperphthalic acid compound in a concentration of less than about 0.5% by weight of the solution. The lens disinfecting solution is capable of disinfecting contact lenses without irritating the eye due to reduced toxicity of the composition.
    Type: Application
    Filed: April 2, 2003
    Publication date: April 15, 2004
    Inventor: Fu-Pao Tsao
  • Patent number: 6617291
    Abstract: The present invention relates to improved ophthalmic solutions that employ allantoin in order to more effectively preserve solutions and to reduce the degree to which cationic preservatives will deposit on contact lenses. Ophthalmic solutions are here understood to include contact lens treatment solutions, such as cleaners, soaking solutions, conditioning solutions and lens storage solutions, as well as wetting solutions and in-eye solutions for treatment of eye conditions.
    Type: Grant
    Filed: November 8, 2001
    Date of Patent: September 9, 2003
    Inventor: Francis X. Smith
  • Patent number: 6569824
    Abstract: A method and composition for disinfecting a contact lens is disclosed. The method includes treating a lens with an aqueous solution having reduced toxicity to the eye which contains an effective amount of a monoperphthalic acid compound in a concentration of less than about 0.5% by weight of the solution. The lens disinfecting solution is capable of disinfecting contact lenses without irritating the eye due to reduced toxicity of the composition.
    Type: Grant
    Filed: February 7, 2001
    Date of Patent: May 27, 2003
    Assignee: Novartis AG
    Inventor: Fu-Pao Tsao
  • Patent number: 6528464
    Abstract: The invention provides a method for inhibiting the binding of a biguanide antimicrobial in aqueous solution to a hydrogel in contact with said solution comprising providing in said solution an amount of cyclodextrin sufficient to inhibit sorption of the biguanide antimicrobial to a hydrogel.
    Type: Grant
    Filed: August 17, 2001
    Date of Patent: March 4, 2003
    Assignee: Bausch & Lomb Incorporated
    Inventors: Erning Xia, Richard V. Smerbeck, Rebecca Franklin
  • Patent number: 6503497
    Abstract: Water-soluble borate-polyol complexes are useful as buffers and/or antimicrobials in aqueous ophthalmic compositions, including those containing polyvinyl alcohol. These compositions have greater antimicrobial activity than comparable compositions containing typical borate buffers and unexpectedly increase the antimicrobial efficacy of other antimicrobial agents when used in combination. In addition, use of the boratepolyol complexes avoids the incompatibility problem typically associated with the combination of borate buffer and polyvinyl alcohol; therefore, the compositions disclosed herein may also contain polyvinyl alcohol.
    Type: Grant
    Filed: December 19, 2001
    Date of Patent: January 7, 2003
    Assignee: Alcon Manufacturing, Ltd.
    Inventors: Masood Chowhan, Nissanke L. Dassanayake
  • Patent number: 6478881
    Abstract: The present invention is based on the unexpected finding that the combination of a carboxylate containing anionic polymer, of molecular weight greater than about 1000 daltons, with cleaning agents, provides improved contact lens cleaning preparations. The present invention includes contacting a soiled contact lens with an aqueous solution comprising an anionically charged polymer and a surfactant or surfactant combination selected from the classes of nonionic surfactants, anionic surfactants, and amphoteric surfactants.
    Type: Grant
    Filed: February 28, 2001
    Date of Patent: November 12, 2002
    Assignee: Vista Scientific L.L.C.
    Inventors: Jeanne Y. Ellis, Edward J. Ellis
  • Publication number: 20020068013
    Abstract: Biomedical devices with antimicrobial coatings are provided. One or more surfaces of the device are coated with lactoferrin to impart antimicrobial properties to the surface.
    Type: Application
    Filed: October 2, 1998
    Publication date: June 6, 2002
    Inventors: MARK WILCOX, TIMOTHY WILLIAMS, RENE SCHNEIDER, DOUGLAS VANDERLAAN
  • Patent number: 6369112
    Abstract: The present invention is directed to a biguanide-containing disinfecting solution containing tyloxapol in combination with a poloxamine for stabilizing the biguanide, which is especially useful for contact-lens solutions that provide enhanced disinfecting and enhanced cleaning efficacy. The method of the present invention comprises cleaning and disinfecting a contact lens with the above-described solution.
    Type: Grant
    Filed: December 15, 1998
    Date of Patent: April 9, 2002
    Assignee: Bausch & Lomb Incorporated
    Inventor: Erning Xia
  • Patent number: 6365636
    Abstract: Water-soluble borate-polyol complexes are useful as buffers and/or antimicrobials in aqueous ophthalmic compositions, including those containing polyvinyl alcohol. These compositions have greater antimicrobial activity than comparable compositions containing typical borate buffers and unexpectedly increase the antimicrobial efficacy of other antimicrobial agents when used in combination. In addition, use of the borate-polyol complexes avoids the incompatibility problem typically associated with the combination of borate buffer and polyvinyl alcohol; therefore, the compositions disclosed herein may also contain polyvinyl alcohol.
    Type: Grant
    Filed: June 20, 2000
    Date of Patent: April 2, 2002
    Assignee: Alcon Manufacturing, Ltd.
    Inventors: Masood Chowhan, Nissanke L. Dassanayake
  • Patent number: 6323165
    Abstract: The invention is directed to compositions and methods used as in-the-eye and/or out-of-eye inhibitors of proteinaceous deposits on hydrophilic contact lenses. Compositions of the present invention comprise moderately charged polyquaternium polymers that selectively bind to hydrophilic contact lenses to block the binding of proteinaceous materials. Compositions of the present invention may be used in multipurpose cleaning solutions for contact lenses and can eliminate the need for special enzyme cleaners and the like for removing proteinaceous materials.
    Type: Grant
    Filed: April 25, 2000
    Date of Patent: November 27, 2001
    Assignee: Bausch & Lomb Incorporated
    Inventors: David J. Heiler, Stephen E. Maier, Susan P. Spooner
  • Patent number: 6319464
    Abstract: The use of low molecular weight amino alcohols in ophthalmic boric solution is described herein. These compounds have been found to enhance the efficacy of antimicrobial preservatives. Particularly preferred amino alcohols are 2-amino-2-methyl-1-propanol (AMP), 2-dimethylamino-2-methyl-1-propanediol (DMAMP), 2-amino-2-ethylpropanol (AMP), 2-amino-2-methyl-1,3-propanediol (AMPD), and 2-amino-1-butanol (AB). The ophthalmic compositions further optionally comprise a borate/polyol buffer system and an alkylamine.
    Type: Grant
    Filed: May 14, 1999
    Date of Patent: November 20, 2001
    Assignee: Alcon Manufacturing, Ltd.
    Inventor: Bahram Asgharian
  • Patent number: 6316669
    Abstract: Bis-amido polybiguanides and their use as antimicrobial agents in pharmaceutical compositions are disclosed. A method of synthesis of bis-amido polybiguanides is also disclosed. The bis-amido polybiguanides are useful in the preservation of pharmaceutical compositions, particularly ophthalmic and otic pharmaceutical compositions and compositions for treating contact lenses. The compounds are especially useful for disinfecting/cleaning contact lenses.
    Type: Grant
    Filed: September 19, 2000
    Date of Patent: November 13, 2001
    Assignee: Alcon Manufacturing, Ltd.
    Inventors: Joonsup Park, Nathaniel D. McQueen
  • Patent number: 6258591
    Abstract: The present invention provides a combined formulation for disinfecting, neutralizing and cleaning a soft contact lens and a method using the same easily, efficiently and safely. The formulation is a one-solution type of combined formulation for disinfecting, neutralizing and cleaning a soft contact lens, which includes a first formulation that contains an iodine-based disinfectant and a proteolytic enzyme and a second formulation that contains a reducing and a foaming agent treated with a delayed release coating, and which contains a nonionic surfactant in at least one of the first and second formulations. A stained soft contact lens can be disinfected, neutralized and cleaned easily by holding it in an aqueous solution colored yellow or brown by iodine molecules and removing it from the aqueous solution after the solution becomes almost colorless.
    Type: Grant
    Filed: December 3, 1998
    Date of Patent: July 10, 2001
    Assignee: Ophtecs Corporation
    Inventors: Toyoaki Yoneda, Takashi Fujii, Mika Morita, Takeshi Ohnuma, Hiroshi Tanouchi, Shigeru Nakamura
  • Patent number: 6228333
    Abstract: An apparatus for the catalytic decomposition of H2O2 in an aqueous solution which is a contact lens care agent, wherein the catalyst is formed by a shaped body which is roughened by sand blasting and which is coated by a platinum layer 1 which is produced by sputtering.
    Type: Grant
    Filed: October 18, 1999
    Date of Patent: May 8, 2001
    Assignee: MDLE Medical Device Laboratories Europe GmbH
    Inventor: Wolfgang G. K. Mueller-Lierheim
  • Patent number: 6210639
    Abstract: Compositions and methods of disinfecting and cleaning medical articles are disclosed. Disinfecting contact lenses by generating of peracetic acid in situ, while simultaneously cleaning with a proteolytic enzyme, is a preferred embodiment. Tablets for simple consumer use including disinfecting and cleaning means, and delayed release neutralizing means, are also disclosed.
    Type: Grant
    Filed: October 26, 1998
    Date of Patent: April 3, 2001
    Assignee: Novartis AG
    Inventors: Elizabeth Gayle Vlass, Christopher Roy Boam, Ian Michael Riorden George, Stephen Dennis Cooper
  • Patent number: 6187264
    Abstract: A solution for preserving and/or disinfecting a contact lens characterized by containing polylysine.
    Type: Grant
    Filed: August 26, 1998
    Date of Patent: February 13, 2001
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Nobuyuki Osawa, Seiichiro Ikawa
  • Patent number: 6165415
    Abstract: A system for disinfecting a contact lens includes a first container section holding a first liquid medium containing hydrogen peroxide. A second container section is provided and holds a second liquid medium containing a hydrogen peroxide destroying component. The first and second container sections are configured to substantially simultaneously provide the first liquid medium and the second liquid medium to form a combined liquid medium containing an amount of hydrogen peroxide from the first liquid medium effective to disinfect a contact lens contacted with the combined liquid medium and an amount of hydrogen peroxide destroying component from the second liquid medium effective to destroy at least a major amount of the hydrogen peroxide in the combined liquid medium.
    Type: Grant
    Filed: October 26, 1998
    Date of Patent: December 26, 2000
    Assignee: Allergan
    Inventors: Terrence J. Hunt, Peter G. Bakhit
  • Patent number: 6162835
    Abstract: Contact-lens disinfectant containing(a) magnesium monoperphthalate and(b) sodium cumenesulphonate,(c) sodium alkylbenzenesulphonate,(d) isotridecanol ethoxylate and(e) methylhydroxyethylcellulose,and packaging and a process for the preparation thereof.
    Type: Grant
    Filed: July 8, 1999
    Date of Patent: December 19, 2000
    Assignee: BODE Chemie GmbH & Co.
    Inventors: Axel Kramer, Peter Rudolph, Brigitte Meyer, Hanns Pietsch
  • Patent number: 6162393
    Abstract: Benzyldimethyl {2-[2-(p-1,1,3,3-tetramethylbutylphenoxy)ethoxy]ethyl} ammonium chloride (BDT) forms the basis of contact lens solutions that are unusually effective at reducing the number and wide variety of pathogenic microorganisms that may infect rigid gas permeable or soft contact lenses. Furthermore, it has been discovered that natural occurring compounds alone and in combination with chemical agents can be used in ophthalmic solutions such as contact lens solution to enhance and complement their anti-microbial, cleaning and wetting activity or to reduce irritation to the eye. The basic contact lens solution comprises an effective concentration of BDT (preferably 1 to 100 parts per million), with naturally occurring plant products possessing activities complementary to BDT, in an isotonic diluent buffered with a physiologically acceptable buffer to a physiologically natural range.
    Type: Grant
    Filed: August 6, 1998
    Date of Patent: December 19, 2000
    Assignee: NDT, Inc.
    Inventors: Chris De Bruiju, F. Richard Christ, Anthony J. Dziabo, Joseph Vigh
  • Patent number: 6143799
    Abstract: Water-soluble borate-polyol complexes are useful as buffers and/or antimicrobials in aqueous ophthalmic compositions, including those containing polyvinyl alcohol. These compositions have greater antimicrobial activity than comparable compositions containing typical borate buffers and unexpectedly increase the antimicrobial efficacy of other antimicrobial agents when used in combination. In addition, use of the borate-polyol complexes avoids the incompatibility problem typically associated with the combination of borate buffer and polyvinyl alcohol; therefore, the compositions disclosed herein may also contain polyvinyl alcohol.
    Type: Grant
    Filed: July 2, 1998
    Date of Patent: November 7, 2000
    Assignee: Alcon Laboratories, Inc.
    Inventors: Masood Chowhan, Nissanke L. Dassanayake
  • Patent number: 6112900
    Abstract: A care kit for reducing irritation and other ocular problems associated with wearing contact lenses is disclosed. The care kit includes at least one solution for the care of contact lenses; at least one non-irritating solution for cleansing eyelids; instructions for informing contact lens wearers of the proper care of contacts in conjunction with eyelid hygiene for improved comfort while wearing contact lenses; and housing for securing the solution for the care of contact lenses, the solution for cleansing eyelids and the instructions. Preferably, the solution for the care of contact lenses can be selected from a group comprising contact lens cleansing solution, disinfecting solution, soaking solution, wetting solution, storage solution, rinsing solution or a combination thereof. The eyelid cleanser can be soaked into a disposable pad and wrapped within an impervious wrapper. Alternatively, the eyelid cleanser is enclosed within an impervious bottle.
    Type: Grant
    Filed: July 1, 1998
    Date of Patent: September 5, 2000
    Assignee: Ocusoft, Inc.
    Inventor: Nat G. Adkins, Jr.
  • Patent number: 6093686
    Abstract: A liquid for contact lenses, containing a polymer (A) having a recurring unit represented by the formula (I): ##STR1## wherein n is 0 or 1. The liquid for contact lenses can considerably decrease variation of the base curve of a contact lens during preservation, and shows excellent antiseptic effect and excellent antibacterial effect.
    Type: Grant
    Filed: March 9, 1999
    Date of Patent: July 25, 2000
    Assignee: Menicon Co., Ltd.
    Inventors: Kazuhiko Nakada, Yutaka Matano
  • Patent number: 6069120
    Abstract: Compositions containing a stable, liquid, ophthalmically acceptable enzyme and methods involving the combined use of these compositions with a polymeric antimicrobial agent are disclosed for the simultaneous cleaning and disinfecting of contact lens. Methods for a daily use regimen are also disclosed.
    Type: Grant
    Filed: December 18, 1996
    Date of Patent: May 30, 2000
    Assignee: Alcon Laboratories, Inc.
    Inventors: Bahram Asgharian, Bor-Shyue Hong
  • Patent number: 6004510
    Abstract: The disclosure relates to a process for the treatment of a surface with a hygiene agent which can include the steps of: a) providing at the surface a non-photochemical catalyst (such as a transition metal compound) which catalyses the formation of the hygiene agent from one or more precursors, whereby the catalyst becomes deposited at the surface, and, b) subsequently treating the surface with a treatment agent (such as a solution of hydrogen peroxide) having the or each hygiene agent precursor, such that the hygiene agent is generated at the surface.
    Type: Grant
    Filed: August 5, 1997
    Date of Patent: December 21, 1999
    Assignee: Lever Brothers Company
    Inventors: Peter Gilbert, Martin Vincent Jones
  • Patent number: 5993833
    Abstract: The invention relates to the use of a histamine antagonist, an interleukin-1-antagonist and/or a TNF antagonist in a cosmetic, pharmaceutical or dermatological composition for treating sensitive skins. It relates especially to the use of a histamine antagonist, an interleukin-1 antagonist and/or a TNF alpha antagonist for preventing and/or combating skin irritations and/or sores and/or erythema and/or dysaesthetic sensations and/or sensations of inflammation and/or pruritus and/or prickling and/or tingling and/or discomfort and/or tightness of the skin and/or mucosae. It also relates to a composition containing a histamine antagonist, an interleukin-1 antagonist and/or a TNF alpha antagonist which limits or eliminates the irritant side-effects of certain products, and in particular of certain cosmetic, dermatological or pharmaceutical active agents.
    Type: Grant
    Filed: June 20, 1997
    Date of Patent: November 30, 1999
    Assignee: Societe L'Oreal S.A.
    Inventors: Olivier De Lacharriere, Lionel Breton, Catherine Cohen
  • Patent number: 5965088
    Abstract: The present invention is directed to method of disinfecting a contact lens with an ophthalmically safe disinfecting aqueous solution comprising about 2.0 to about 8.0 ppm of a bis(biguanide) having the following formula: ##STR1## wherein R.sup.1 and R.sup.4 are independently selected from the group consisting of branched or unbranched alkyl having 4-12 carbon atoms, ether or thioether radical having 4-12 carbon atoms, or cycloalkyl or cycloalkyl-alky radical having 5-12 carbon atoms; R.sup.2 and R.sup.3 are independently selected from the group consisting of hydrogen, alkyl having 1-12 carbon atoms, alkoxyalkyl having 1-12 carbon atoms, or cycloalkyl or cycloalkyl-alkyl having 5-12, carbon atoms; R.sup.6 and R.sup.7 are independently selected from the group consisting of hydrogen and alkyl radical having 1-6 carbon atoms, and A in the above formula is selected from the group consisting of a divalent alkyl, alkyloxyalkyl, or alkylsufide radical each having 4-12 carbon atoms.
    Type: Grant
    Filed: October 23, 1997
    Date of Patent: October 12, 1999
    Inventors: Andrea M. Lever, O. William Lever, Jr.
  • Patent number: 5925317
    Abstract: A method and system for disinfecting contact lenses with iodine using a neutralizing solution having a first, rapid neutralizing component which completes its reaction with available iodine in less than five seconds and a second, slower neutralizing component which completes its reaction with available iodine in about 3 to 30 minutes.
    Type: Grant
    Filed: December 6, 1996
    Date of Patent: July 20, 1999
    Assignee: Bausch & Lomb Incorporated
    Inventors: Jill S. Rogalskyj, David J. Heiler, Alyce K. Dobie
  • Patent number: 5922279
    Abstract: The present invention provides methods for treating contact lenses and compositions for the same. The present invention includes contacting a lens with an aqueous solution comprising a pyrrolidone compound represented by the formula: ##STR1## wherein: R is a hydrogen or an alkyl group having from 1 to 6 carbon atoms. In preferred embodiments of the invention, the subject compounds are used in combination with antimicrobial agents for providing simultaneous disinfection and cleaning of contact lenses.
    Type: Grant
    Filed: February 6, 1997
    Date of Patent: July 13, 1999
    Assignee: Bausch & Lomb Incorporated
    Inventor: Susan P. Spooner
  • Patent number: 5900213
    Abstract: N,N-dialkyl and N'-alkylethylene diamines of the formula: ##STR1## wherein R, R.sup.1 and R.sup.2 are as described in the specification. The compounds are useful in disinfecting and cleaning contact lenses and preserving ophthalmic products.
    Type: Grant
    Filed: March 25, 1998
    Date of Patent: May 4, 1999
    Assignee: Alcon Laboratories, Inc.
    Inventors: Nissanke L. Dassanayake, Ronald L. Schlitzer, Joonsup Park, Bahram Asgharian