Polymer Of A Heterocyclic N-vinyl Polymerizable Compound Patents (Class 523/108)
  • Patent number: 6951894
    Abstract: An ophthalmic lens suited for extended-wear periods of at least one day on the eye without a clinically significant amount of corneal swelling and without substantial wearer discomfort. The lens has a balance of oxygen permeability and ion or water permeability, with the ion or water permeability being sufficient to provide good on-eye movement, such that a good tear exchange occurs between the lens and the eye. A preferred lens is a copolymerization product of a oxyperm macromer and an ionoperm monomer. The invention encompasses extended wear contact lenses, which include a core having oxygen transmission and ion transmission pathways extending from the inner surface to the outer surface.
    Type: Grant
    Filed: August 17, 2000
    Date of Patent: October 4, 2005
    Assignee: CIBA Vision Corporation
    Inventors: Paul Clement Nicolson, Richard Carlton Baron, Peter Chabrecek, John Court, Angelika Domschke, Hans Jörg Griesser, Arthur Ho, Jens Höpken, Bronwyn Glenice Laycock, Qin Liu, Dieter Lohmann, Gordon Francis Meijs, Eric Papaspiliotopoulos, Judy Smith Riffle, Klaus Schindhelm, Deborah Sweeney, Wilson Leonard Terry, Jr., Jürgen Vogt, Lynn Cook Winterton
  • Patent number: 6933325
    Abstract: A high refractive index, curable, synthetic resin composition comprising a core resin composition composed of a mixture of ethylenically unsaturated compounds, and an initiation system containing both photo and thermal initiators, particularly a photochromic resin composition which further includes at least one photochromic dye. Also a curing process, which includes a combination of multi-step radiation curing and thermal annealing. Articles produced of cured composition exhibit superior physical and, in appropriate cases, photochromic properties and can be easily mass produced on a commercial scale due to short processing time and use of readily available chemicals.
    Type: Grant
    Filed: October 11, 2002
    Date of Patent: August 23, 2005
    Assignee: Rodenstock GmbH
    Inventors: Qiang Zheng, Donald Scott Nelson, Charles William Carper, Jr., Manfred Melzig, Herbert Schuster, Herbert Zinner
  • Patent number: 6926965
    Abstract: The present invention provides a medical device, preferably an ophthalmic device, more preferably a contact lens, which comprises a core material and a biocompatible LbL coating non-covalently attached to said core material. The biocompatible LbL coating comprises at least one charge/non-charge bilayer, wherein said charge/non-charge bilayer is composed of, in no particular order, one layer of a charged polymeric material and one layer of a non-charged polymeric material which is capable of being non-covalently bond to the charged polymeric material.
    Type: Grant
    Filed: September 3, 2003
    Date of Patent: August 9, 2005
    Assignee: Novartis AG
    Inventors: Yongxing Qiu, Lynn Cook Winterton, John Martin Lally
  • Patent number: 6689480
    Abstract: The present invention relates to a surface-treated plastic article including a thin layer composed of a polymer complex on the surface. The surface-treated plastic article can be produced by a treatment with at least one kind of aqueous solutions of polymers having a weight average molecular weight of 200 or more. According to the present invention, the plastic articles, such as contact lenses, having superior transparency, wettability, oxygen permeability, and mechanical properties can be provided.
    Type: Grant
    Filed: April 26, 2001
    Date of Patent: February 10, 2004
    Assignee: Toray Industries, Inc.
    Inventors: Naoki Shimoyama, Mitsuru Yokota, Tadahiro Uemura
  • Patent number: 6617373
    Abstract: Ophthalmic lenses, such as corneal contact lenses, include a lens body made of a composition including a lens body made of a composition including a first crosslinked polymer material which is water swellable, and a second polymeric material, other than the first material, selected from water soluble polymeric materials, water swellable polymeric materials and mixtures thereof. The second material is physically immobilized by the first material. Such lenses provide increased water retention and/or increased water content and/or increased modulus and/or reduced friction which increases lens wearer comfort. Compositions and methods for providing such lenses and compositions are also provided.
    Type: Grant
    Filed: December 13, 2001
    Date of Patent: September 9, 2003
    Assignee: Ocular Sciences, Inc.
    Inventors: Jiri Sulc, Zuzana Krcova
  • Patent number: 6602930
    Abstract: A material for contact lenses having excellent flexibility and oxygen permeability are disclosed. The material comprises a copolymer essentially comprising a siloxane macromer of component (A) which has the number-average molecular weight of from about 1,000 to 10,000 and is represented by the general formula (I), a water-insoluble monoolefin monomer of component (B), and a water-soluble monoolefin monomer of component (C).
    Type: Grant
    Filed: February 23, 2001
    Date of Patent: August 5, 2003
    Assignee: Hoya Healthcare Corporation
    Inventor: Suguru Imafuku
  • Patent number: 6599959
    Abstract: A contact lens of high water content and extremely high water balance made of a homopolymer or copolymer of 2,3-dihydroxypropyl methacrylate and methods of making such contact lenses, and polymers and hydrogels useful in such contact lenses.
    Type: Grant
    Filed: June 4, 2001
    Date of Patent: July 29, 2003
    Assignee: Benz Research and Development Corporation
    Inventors: Patrick H. Benz, Jose A. Ors
  • Patent number: 6559198
    Abstract: Highly comfortable hydrophilic contact lenses are made from a coploymer of an ethylenically unsaturated fluoro-sulfone ester, ethylenically unsaturated fluorosulfone ester monomer of acrylic or methacrylic acid having alkyl hydroxy group and N-Vinyl 2-pyrrolidinone and methods for the manufacturing thereof.
    Type: Grant
    Filed: July 5, 2001
    Date of Patent: May 6, 2003
    Inventor: Nick Novicky
  • Patent number: 6552103
    Abstract: Novel biomimetic hydrogel materials and methods for their preparation. Hydrogels containing acrylamide-functionalized carbohydrate, sulfoxide, sulfide or sulfone copolymerized with a hydrophilic or hydrophobic copolymerizing material selected from the group consisting of an acrylamide, methacrylamide, acrylate, methacrylate, vinyl and a derivative thereof present in concentration from about 1 to about 99 wt %. and methods for their preparation. The method of use of the new hydrogels for fabrication of soft contact lenses and biomedical implants.
    Type: Grant
    Filed: May 19, 2000
    Date of Patent: April 22, 2003
    Assignee: The Regents of the University of California
    Inventors: Carolyn Bertozzi, Ravindranath Mukkamala, Oing Chen, Hopin Hu, Dominique Baude
  • Patent number: 6517750
    Abstract: A method of making a one-piece intraocular lens formed from a copolymer of a hydrophilic monomer and an alkoxy-alkylmethacrylate. The intraocular lens is foldable so as to be insertable through a small incision in the eye. Copolymers of the lens have an equilibrium water content of from about 10 to about 38 percent by weight based on the total weight of the hydrated copolymer.
    Type: Grant
    Filed: June 6, 2001
    Date of Patent: February 11, 2003
    Assignee: Benz Research and Development Corporation
    Inventors: Patrick H. Benz, Jose A. Ors
  • Patent number: 6500481
    Abstract: The invention provides biomedical devices. In particular, the invention provides biomedical devices on the surfaces of which stable, hydrophilic, amide-containing coatings are formed.
    Type: Grant
    Filed: June 9, 1999
    Date of Patent: December 31, 2002
    Assignee: Johnson & Johnson Vision Care, Inc.
    Inventors: Douglas G. Vanderlaan, Ann-Marie Wong Meyers, David C. Turner, Joe M. Wood
  • Patent number: 6451871
    Abstract: Biomedical devices, such as ophthalmic lenses, and methods of making such devices having a surface coating including at least one polyionic layer. A preferred method involves spray coating a polycationic material onto a core lens, rinsing and drying the lens, followed by spray coating a polyanionic material, rinsing and drying. The coating process may be applied a plurality of times to achieve a multi-layer coating on the lens surface. A particularly preferred embodiment is a contact lens comprising a highly oxygen permeable hydrophobic core coated with a 5 to 20 bilayers of hydrophilic polyionic materials.
    Type: Grant
    Filed: April 27, 2000
    Date of Patent: September 17, 2002
    Assignee: Novartis AG
    Inventors: Lynn Cook Winterton, Juergen Vogt, John Martin Lally, Friedrich Stockinger
  • Patent number: 6436481
    Abstract: The present invention describes coated articles and methods for preparing such articles, wherein the primary coating comprises a plasma-induced polymer carrying reactive groups. The invention further relates to the reaction of said primary coatings carrying reactive groups with monomeric, oligomeric or macromolecular compounds of synthetic, semisynthetic or biological origin to provide hybrid-type coated articles (secondary coatings).
    Type: Grant
    Filed: June 22, 1999
    Date of Patent: August 20, 2002
    Assignee: Novartis AG
    Inventors: Peter Chabrecek, Dieter Lohmann
  • Patent number: 6407145
    Abstract: The invention relates to a novel process for the manufacture of mouldings, especially contact lenses, in which a soluble prepolymer comprising crosslinkable groups is crosslinked in solution, and also to mouldings, especially contact lenses, obtainable in accordance with that process. The present invention relates also to novel prepolymers that can be used in the process according to the invention, especially derivatives of a polyvinyl alcohol having a molecular weight of at least about 2000 that, based on the number of hydroxy groups of the polyvinyl alcohol, comprise from approximately 0.
    Type: Grant
    Filed: September 17, 1998
    Date of Patent: June 18, 2002
    Assignee: Novartis AG
    Inventor: Beat Müller
  • Patent number: 6294594
    Abstract: A denture adhesive base composition consisting essentially of polyvinyl pyrrolidone and ethylene oxide polymer. A denture adhesive composition including this base composition is also provided with other optional adhesive components. Also is provided a method for formulating a novel denture adhesive base composition consisting essentially of polyvinyl pyrrolidone and ethylene oxide polymer.
    Type: Grant
    Filed: September 12, 2000
    Date of Patent: September 25, 2001
    Assignee: Block Drug Company, Inc.
    Inventors: Michael J. Borja, Alan A. Halecky
  • Patent number: 6268511
    Abstract: An itaconic acid derivative having the following formulas (1) or (2): wherein R1 represents a hydrogen atom, a lower alkyl group or a phenyl lower alkyl group, wherein the phenyl ring of the phenyl lower alkyl group is unsubstituted or substituted by at least one lower alkyl group, R2 represents a hydrogen atom or a lower alkyl group and A represents a lower alkylene group, or salts thereof. Copolymers can be made from the itaconic acid derivatives.
    Type: Grant
    Filed: December 3, 1999
    Date of Patent: July 31, 2001
    Assignees: Santen Pharmaceutical Co., Ltd.
    Inventor: Fumian Li
  • Patent number: 6267784
    Abstract: A one piece intraocular lens and an intraocular lens include an optic portion and a haptic portion formed from a copolymer that includes an incorporated hydrophilic monomer and an incorporated alkoxyalkyl methacrylate monomer. The optic and haptic portions of the one-piece intraocular lens and intraocular lens are formed from the same copolymer. The copolymer of intraocular lenses and preferred one-piece intraocular lenses includes about 40 to about 95 percent by weight of the hydrophilic monomer based on the total weight of the dry copolymer and about 5 to about 60 percent by weight of the alkoxyalkyl methacrylate based on the total weight of the dry copolymer. A blank for use in constructing an intraocular lens includes a hydrogel in a shape suitable for finishing into an intraocular lens. The hydrogel of the blank comprises a first portion suitable for finishing into a haptic portion and a second portion suitable for finishing into an optic portion.
    Type: Grant
    Filed: May 1, 1998
    Date of Patent: July 31, 2001
    Assignee: Benz Research and Development Corporation
    Inventors: Patrick H. Benz, Jose A. Ors
  • Patent number: 6248285
    Abstract: The main aim of the present invention is a method of preparing photochromic or non-photochromic organic pieces of optical quality and especially organic lenses, by radical polymerisation of a mixture of radically polymerisable monomers, characterised in that it comprises: a) adjusting, by pre-polymerisation, the viscosity of said mixture, to a value between 0.4 and 2 Pa.s; b) pouring said pre-polymerised mixture into a mould; c) photogelifying, in said mould, said pre-polymerised mixture until its gel point; d) completing the polymerisation of said pre-polymerised and gelified mixture in said mould, by heat treatment; adding effective amounts of at least one thermal catalyst and of at least one photoinitiator intervening in said mixture of monomers for the implementation of said pre-polymerisation, photogelification and polymerisation; said photoinitiator(s) intervening in an amount less than or equal to 0.009 parts by weight per 100 parts by weight of said mixture of monomers.
    Type: Grant
    Filed: September 29, 1999
    Date of Patent: June 19, 2001
    Assignee: Corning S.A.
    Inventors: David Henry, Andre Vachet
  • Patent number: 6242508
    Abstract: A contact lens of high water content and extremely high water balance made of a homopolymer or copolymer of 2,3-dihydroxypropyl methacrylate and methods of making such contact lenses, and polymers and hydrogels useful in such contact lenses.
    Type: Grant
    Filed: March 13, 2000
    Date of Patent: June 5, 2001
    Assignee: Benz Research and Development Corporation
    Inventors: Patrick H. Benz, Jose A. Ors
  • Patent number: 6218463
    Abstract: The invention provides compositions for forming ocular devices which compositions contain latent UV absorbers. The compositions of the invention may be used to conveniently and efficiently produce ocular devices through UV initiated, free radical polymerization.
    Type: Grant
    Filed: April 20, 1998
    Date of Patent: April 17, 2001
    Assignee: Johnson & Johnson Vision Care, Inc.
    Inventors: Frank F. Molock, Ivan M. Nunez, Laura Elliott
  • Patent number: 6204306
    Abstract: The present invention relates to &agr;-aminoacetophenones functionalized with organic diisocyanates, which can be used as reactive photoinitiators; to oligomers and polymers to which such functionalized &agr;-aminoacetophenones are bonded; to &agr;-aminoacetophenones having unsaturated polymerizable side-chain; to dimeric and trimeric photoinitiators; to the use of such photoinitiators; to materials coated with such photoinitiators; and to the use of the functionalized &agr;-aminoacetophenones for modifying surfaces.
    Type: Grant
    Filed: August 11, 1997
    Date of Patent: March 20, 2001
    Assignee: Novartis AG
    Inventors: Peter Chabrecek, Kurt Dietliker, Dieter Lohmann
  • Patent number: 6169127
    Abstract: The present invention relates to coated particles wherein the polymer chains of the coating are obtainable by after-glow plasma induced polymerization of a monomer under special plasma conditions. The invention further relates to a method for the production of articles coated with a polymer having these features.
    Type: Grant
    Filed: June 2, 1998
    Date of Patent: January 2, 2001
    Assignee: Novartis AG
    Inventors: Dieter Lohmann, Peter Chabrecek, Jens Höpken
  • Patent number: 6096799
    Abstract: A contact lens of high water content and extremely high water balance made of a homopolymer or copolymer of 2,3-dihydroxypropyl methacrylate and methods of making such contact lenses, and polymers and hydrogels useful in such contact lenses.
    Type: Grant
    Filed: May 7, 1998
    Date of Patent: August 1, 2000
    Assignee: Benz Research & Development Corporation
    Inventors: Patrick H. Benz, Jose A. Ors
  • Patent number: 6096846
    Abstract: An ultraviolet absorbing base material is disclosed in which a vinyl copolymerizable monomer and a benzotriazole ultraviolet absorbing monomer represented by formula (I) or (II) are copolymerized: ##STR1## wherein X represents H or a halogen, R.sub.1 is H or an alkyl group having 1 to 6 carbon atoms, R.sub.2 and R.sub.3 each represents a linear or branched C.sub.1 -C.sub.10 alkylene group and R.sub.4 represents H or CH.sub.3.
    Type: Grant
    Filed: August 31, 1998
    Date of Patent: August 1, 2000
    Assignee: Nidek Co., Ltd.
    Inventors: Haruo Oda, Tsutomu Sunada, Yoshihiro Nakahata
  • Patent number: 6037144
    Abstract: A collagen containing substrate comprising cattle basal membrane is conditioned by incubating the membranes in a mixture of pepsin, hyaluronidase and acetic acid and separating the collagen from the mixture. The mixture can include pepsin, hyaluronidase and a 0.5M solution of acetic acid in 1:1:10 proportions. The incubation is conducted for about 10 hours at about 45.degree. C. After incubation, collagen is separated from the mixture by centrifuging at a speed of 5000 to 30000 rpms for about 30 minutes. The collagen is mixed with polymerizable monomer and polymerized to form a gel that can be ground to form an intraocular or contact lens.
    Type: Grant
    Filed: November 17, 1998
    Date of Patent: March 14, 2000
    Assignee: Staar Surgical AG
    Inventors: Svyatoslav Nikolayevich Fedorov, Sergei Nikolayevich Bagrov, Yevgeny Viktorovich Larionov, Vladimir Borisovich Malyshev
  • Patent number: 6015842
    Abstract: Foldable, hydrophilic, ophthalmic device materials are cured by exposure to blue light using a benzoylphosphine oxide photoinitiator.
    Type: Grant
    Filed: August 7, 1997
    Date of Patent: January 18, 2000
    Assignee: Alcon Laboratories, Inc.
    Inventors: Albert R. LeBoeuf, Mutlu Karakelle
  • Patent number: 5981617
    Abstract: A multi-step process that yields a gas permeable contact lens that is more comfortable to wear due to an increased amount of moisture retention between the cornea and the lens and that also provides an increased amount of oxygen to the cornea to prevent the many potential problems occurring due to insufficient oxygen in the cornea area. The process entails exposure of the concave side of a gas permeable contact lens to far infrared light, thereby creating an electron deficiency on the concave side of the lens (the side which contacts the cornea). This electron deficiency drives a surface reaction upon the lens that produces water and oxygen as products, thereby providing the oxygen and moisture. Subsequent steps in the process are similar, although each subsequent exposure results in greater electron depletion of the concave side of the contact lens, thereby causing the contact lens to be increasingly effective in retaining moisture and oxygen with each additional exposure.
    Type: Grant
    Filed: January 20, 1998
    Date of Patent: November 9, 1999
    Inventors: Hee Jung Kim, Sang Chul Park, Myoung Soo Shin
  • Patent number: 5965630
    Abstract: A method for producing moisture-containing soft contact lenses by polymerizing monomers for contact lenses in the presence of a diluent for monomers and substituting the diluent contained in the resulting polymer with an aqueous solution, wherein the diluent is composed of one or more compounds selected from the group consisting of triethylene glycol, diethylene glycol monomethyl ether and triethylene glycol monomethyl ether and a moisture-containing contact lens composed of a copolymer of the following main components, (1) two or more kinds of hydrophilic monomers selected from the group consisting of 2-hydroxyethyl methacrylate, N-vinyl-2-pyrrolidone and N,N-dimethylacrylamide, (2) an alkyl methacrylate and (3) a crosslinkable monomer, and an aqueous solution, which has a moisture content of 50-70% and exhibits a penetration strength of 1100 gf/mm or more. The contact lens of the present invention is optically transparent and exhibit excellent mechanical strength.
    Type: Grant
    Filed: August 4, 1997
    Date of Patent: October 12, 1999
    Assignee: Hoya Corporation
    Inventors: Suguru Imafuku, Soichiro Motono, Hidetoshi Iwamoto
  • Patent number: 5939208
    Abstract: In the present invention method, the surface of articles made of acrylic polymers and methacrylic polymers are converted into thin biomimetic layers by using the process involving at least the following two steps:(a) The polymer surface is contacted, in the presence of water and for a predetermined reaction time necessary to form a continuous surface layer thinner than about 500 microns, with a solution containing one or more tetraalkylammonium hydroxides of the general formula:R.sub.1 R.sub.2 R.sub.3 R.sub.4 N.sup.+ OH.sup.-where R.sub.1, R.sub.2, R.sub.3, R.sub.4 are the alkyl substituents, in which the sum of the number of carbon atoms is equal to or larger than 8 but smaller than 45; and,(b) The article is removed from the aqueous reaction solution and excess of tetraalkylammonium hydroxide is removed from the polymer surface by washing the polymer with a liquid miscible with the tetraalkylammonium hydroxide.
    Type: Grant
    Filed: November 7, 1997
    Date of Patent: August 17, 1999
    Assignee: Biomimetics, Inc.
    Inventor: Patrick Stoy
  • Patent number: 5936256
    Abstract: A collagen containing substrate comprising cattle basal membrane is conditioned by incubating the membranes in a mixture of pepsin, hyaluronidase and acetic acid and separating the collagen from the mixture. The mixture can include pepsin, hyaluronidase and a 0.5 M solution of acetic acid in 1:1:10 proportions. The incubation is conducted for about 10 hours at about 45.degree. C. After incubation, collagen is separated from the mixture by centrifuging at a speed of 5000 to 30000 rpms for about 30 minutes. The collagen is mixed with polymerizable monomer and polymerized to form a gel that can be ground to form an intraocular or contact lens.
    Type: Grant
    Filed: November 17, 1998
    Date of Patent: August 10, 1999
    Assignee: Staar Surgical AG
    Inventors: Svyatoslav Nikolayevich Fedorov, Sergei Nikolayevich Bagrov, Yevgeny Viktorovich Larionov, Vladimir Borisovich Malyshev
  • Patent number: 5910537
    Abstract: The present invention is ultraviolet light absorbing biocompatible polymer containing the copolymerization product of a mixture of hydrophobic and hydrophilic acrylic and/or allelic monomers, graft-polymerized with telo-collagen, where the hydrophobic monomers includes at least one ultraviolet light absorbing hydrophobic acrylic or allelic monomer. The present material is useful in the production of deformable lenses, for example, intraocular lenses, refractive intraocular contact lenses, and standard contact lenses useful, for example, for correcting aphekia, myopia and hypermetropia.
    Type: Grant
    Filed: May 28, 1997
    Date of Patent: June 8, 1999
    Assignee: STAAR Surgical Company Inc.
    Inventors: Vladimir Feingold, Alexei V. Osipov
  • Patent number: 5883152
    Abstract: A contact lens contains a copolymer obtained by copolymerizing, as an indispensable feed monomer, 2 to 95 wt. % of a carboxylic acid ester monomer and 98 to 5 wt. % of a copolymerizable monomer. The carboxylic acid ester monomer is represented by the formula (I) ##STR1## wherein R.sub.1 stands for a hydrogen atom, an alkyl group having 1 to 12 carbon atoms, an alkenyl group having 1 to 12 carbon atoms, a cyclic alkyl group having 3 to 12 carbon atoms or an aryl group, and X stands for ##STR2## in which R.sub.2 and R.sub.3 each stand for a hydrogen atom, an alkyl group having 1 to 12 carbon atoms, an alkenyl group having 1 to 12 carbon atoms, a cyclic alkyl group having 3 to 12 carbon atoms or an aryl group, m and 1 being integers of from 0 to 4, at least one of R.sub.1, R.sub.2 and R.sub.3 being a group containing a fluorine atom and n being an integer of from 0 to 4.
    Type: Grant
    Filed: June 25, 1997
    Date of Patent: March 16, 1999
    Assignee: Nippon Oil and Fats Co., Ltd.
    Inventors: Keizo Anan, Yoshishige Murata, Naoyuki Amaya, Tuyoshi Miyazaki
  • Patent number: 5871675
    Abstract: The invention relates to a novel process for the production of tinted mouldings, in particular tinted contact lenses, in which a crosslinkable tinted polymer comprising units containing a crosslinkable group and units containing a reactive dye radical is crosslinked in solution, and to tinted mouldings, in particular tinted contact lenses, obtainable by this process.
    Type: Grant
    Filed: September 18, 1997
    Date of Patent: February 16, 1999
    Assignee: Novartis AG.
    Inventors: Achim Muller, Thomas Pohlmann, Bernhard Seiferling
  • Patent number: 5866635
    Abstract: A reactive monomer for preparing ultraviolet absorbing polymers has formula (I) wherein R.sup.1 is a halogen or C.sub.1 -C.sub.6 straight or branched chain alkoxy group; and R is a --(CH.sub.2).sub.3 O--, --(CH.sub.2).sub.2 O--, --CH(CH.sub.3)CH.sub.2 O--, --CH.sub.2 CH(CH.sub.3)O(--, --(CH.sub.2).sub.3 OCH.sub.2 --, --(CH.sub.2).sub.2 OCH.sub.2 --, --CH(CH.sub.3)CH.sub.2 OCH.sub.2 --, or --CH.sub.2 CH(CH.sub.3)OCH.sub.2 --group. The compound can be used to produce ultraviolet absorbing polymers, such as those used for ocular devices including contact and intraocular lenses.
    Type: Grant
    Filed: February 4, 1998
    Date of Patent: February 2, 1999
    Assignee: Wesley Jessen Corporation
    Inventors: Theresa A. Collins, John T. Mulvihill
  • Patent number: 5856120
    Abstract: A collagen containing substrate comprising cattle basal membrane is conditioned by incubating the membranes in a mixture of pepsin, hyaluronidase and acetic acid and separating the collagen from the mixture. The mixture can include pepsin, hyaluronidase and a 0.5M solution of acetic acid in 1:1:10 proportions. The incubation is conducted for about 10 hours at about 45.degree. C. After incubation, collagen is separated from the mixture by centrifuging at a speed of 5000 to 30000 rpms for about 30 minutes. The collagen is mixed with polymerizable monomer and polymerized to form a gel that can be ground to form an intraocular or contact lens.
    Type: Grant
    Filed: January 29, 1997
    Date of Patent: January 5, 1999
    Assignee: Staar Surgical Company, Inc.
    Inventors: Svyatoslav Nikolayevich Fedorov, Sergei Nikolayevich Bagrov, Yevgeny Viktorovich Larionov, Vladimir Borisovich Malyshev
  • Patent number: 5849810
    Abstract: The invention relates to a novel process for the manufacture of mouldings, especially contact lenses, in which a soluble prepolymer comprising crosslinkable groups is crosslinked in solution, and also to mouldings, especially contact lenses, obtainable in accordance with that process. The present invention relates also to novel prepolymers that can be used in the process according to the invention, especially derivatives of a polyvinyl alcohol having a molecular weight of at least about 2000 that, based on the number of hydroxy groups of the polyvinyl alcohol, comprise from approximately 0.5 to approximately 80% of units of formula I ##STR1## wherein R is lower alkylene having up to 8 carbon atoms,R.sup.1 is hydrogen or lower alkyl andR.sup.
    Type: Grant
    Filed: July 3, 1996
    Date of Patent: December 15, 1998
    Assignee: CIBA Vision Corporation
    Inventor: Beat Muller
  • Patent number: 5805264
    Abstract: The invention relates to a process for modifying the surface characteristics of a preformed polymer substrate to impart altered properties thereto by graft polymerization on the substrate which includes: placing the polymer substrate in a plasma to form free radicals on the substrate; contacting the substrate having free radicals with oxygen to form hydroperoxy groups on the surface of the substrate; and graft polymerizing an ethylenically unsaturated monomer onto the surface of the polymer substrate.
    Type: Grant
    Filed: January 26, 1994
    Date of Patent: September 8, 1998
    Assignee: CIBA Vision Corporation
    Inventors: Robert A. Janssen, Ellen M. Ajello, Richard D. Auten, Glenn S. Nomura, Thomas E. Shank
  • Patent number: 5789464
    Abstract: The invention relates to a novel process for the manufacture of mouldings, especially contact lenses, in which a soluble prepolymer comprising crosslinkable groups is crosslinked in solution, and also to mouldings, especially contact lenses, obtainable in accordance with that process. The present invention relates also to novel prepolymers that can be used in the process according to the invention, especially derivatives of a polyvinyl alcohol having a molecular weight of at least about 2000 that, based on the number of hydroxy groups of the polyvinyl alcohol, comprise from approximately 0.5 to approximately 80% of units of formula I ##STR1## wherein R is lower alkylene having up to 8 carbon atoms,R.sup.1 is hydrogen or lower alkyl andR.sup.
    Type: Grant
    Filed: December 22, 1995
    Date of Patent: August 4, 1998
    Assignee: CIBA Vision Corporation
    Inventor: Beat Muller
  • Patent number: 5741830
    Abstract: A water-absorptive soft contact lens comprising a polymer prepared by polymerizing a monomer mixture comprising (A) a fluorine-containing styrene derivative represented by the general formula (I): ##STR1## wherein R.sup.1 is hydrogen atom or methyl group, m is an integer of 1 to 3 and n is 0 or an integer of 1 to 7, and (B) N, N-dimethyl(meth)acrylamide. The water-absorptive soft contact lens has excellent oxygen permeability, high mechanical strength and excellent flexibility independent of water content.
    Type: Grant
    Filed: February 13, 1996
    Date of Patent: April 21, 1998
    Assignee: Menicon Co., Ltd.
    Inventors: Miyuki Kamiya, Naotaka Kamiya, Noriko Iwata, Yasushi Yamamoto, Yasuo Tarumi
  • Patent number: 5729322
    Abstract: A reactive monomer for preparing ultraviolet absorbing polymers has formula (I) wherein R.sup.1 is a halogen or C.sub.1 -C.sub.6 straight or branched chain alkoxy group; and R.sup.2 is a --(CH.sub.2).sub.3 O--, --(CH.sub.2).sub.2 O--, --CH(CH.sub.3)CH.sub.2 O--, --CH.sub.2 CH(CH.sub.3)O--, --(CH.sub.2).sub.3 OCH.sub.2 --, --(CH.sub.2).sub.2 OCH.sub.2 --, --CH(CH.sub.3)CH.sub.2 OCH.sub.2 --, or --CH.sub.2 CH(CH.sub.3)OCH.sub.2 -- group. The compound can be used to produce ultraviolet absorbing polymers, such as those used for ocular devices including contact and intraocular lenses.
    Type: Grant
    Filed: November 27, 1996
    Date of Patent: March 17, 1998
    Assignee: Wesley-Jessen Corporation
    Inventors: Theresa A. Collins, John T. Mulvihill
  • Patent number: 5690953
    Abstract: An ophthalmic lens, particularly a soft hydrogel contact lens, is disclosed. The lens can be derived from a crosslinked polymer made by reacting a hydrophilic monomer with a crosslinking amount of a polyfunctional compound containing a saccharide residue. The preferred hydrophilic monomer is actually a mixture of the following individual hydrophilic monomers: a) the reaction product of a free radical reactive monoisocyanate and a monoalkoxy polyalkylether, b) N,N-dimethylacrylamide, and optionally c)hydroxyethyl methacrylate. The preferred polyfunctional compound is a prepolymer derived from an alkoxylated glucose or sucrose. This prepolymer can be made by reacting glucose or sucrose, which has been ethoxylated or propoxylated, with a free radical reactive isocyanate which has been capped. The free radical reactive isocyanate can be capped by reacting it with a polyalkylether, such as polyethylene glycol, and then reacting this intermediate with a diisocyanate.
    Type: Grant
    Filed: September 13, 1996
    Date of Patent: November 25, 1997
    Assignee: Johnson & Johnson Vision Products, Inc.
    Inventors: Frank F. Molock, Ivan M. Nunez, James D. Ford, Laura D. Elliott
  • Patent number: 5665840
    Abstract: The present invention describes a water-soluble crosslinkable prepolymer that comprises, in the copolymer chain, units derived from the following monomeric structural units: a vinyl lactam (a), vinyl alcohol (b), optionally a lower alkanecarboxylic acid vinyl ester (c), a vinylic crosslinking agent (d) and optionally a vinylic photoinitiator (e); a process for the preparation of the novel prepolymers; crosslinked water-insoluble polymeric networks therefrom; hydrogels and moulded articles made from the crosslinked water-insoluble polymeric networks, especially contact lenses; and a process for the manufacture of hydrogels and finished contact lenses using the mentioned crosslinkable water-soluble prepolymers.
    Type: Grant
    Filed: November 3, 1995
    Date of Patent: September 9, 1997
    Assignee: Novartis Corporation
    Inventors: Thomas Pohlmann, Achim Muller, Bernhard Seiferling
  • Patent number: 5661218
    Abstract: The present invention is biocompatible polymer containing the copolymerization product of a mixture of hydrophobic and hydrophilic acrylic and/or allelic monomers, graft-polymerized with telo-collagen. The present material is useful in the production of deformable lenses, for example, intraocular lenses, refractive intraocular contact lenses, and standard contact lenses useful, for example, for correcting aphekia, myopia and hypermetropia.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: August 26, 1997
    Assignee: Staar Surgical Company, Inc.
    Inventors: Vladimir Feingold, Alexei V. Osipov
  • Patent number: 5654349
    Abstract: The present invention is biocompatible polymer containing the copolymerization product of a mixture of hydrophobic and hydrophilic acrylic and/or allelic monomers, graft-polymerized with telo-collagen. The present material is useful in the production of deformable lenses, for example, intraocular lenses, refractive intraocular contact lenses, and standard contact lenses useful, for example, for correcting aphekia, myopia and hypermetropia.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: August 5, 1997
    Assignee: Staar Surgical Company, Inc.
    Inventors: Vladimir Feingold, Alexei V. Osipov
  • Patent number: 5654388
    Abstract: The present invention is biocompatible polymer containing the copolymerization product of a mixture of hydrophobic and hydrophilic acrylic and/or allelic monomers, graft-polymerized with telo-collagen. The present material is useful in the production of deformable lenses, for example, intraocular lenses, refractive intraocular contact lenses, and standard contact lenses useful, for example, for correcting aphekia, myopia and hypermetropia.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: August 5, 1997
    Assignee: Staar Surgical Company, Inc.
    Inventors: Vladimir Feingold, Alexei V. Osipov
  • Patent number: 5632773
    Abstract: Corneal implants and methods for producing such implants are disclosed. The present corneal implants comprise a lens body which is optically clear and is structured to be surgically attached in or on the cornea of a mammalian eye, the lens body including a hydrogel composition containing water, a collagen component and a polymeric material covalently bonded to the collagen component. The hydrogel composition has enhanced biostability relative to an identical hydrogel composition without the polymeric material.
    Type: Grant
    Filed: March 15, 1996
    Date of Patent: May 27, 1997
    Assignee: Allergan, Inc.
    Inventors: Richard S. Graham, Crystal M. Cunanan
  • Patent number: 5629360
    Abstract: Disclosed are optically clear xerogel polymer compositions containing an interpenetrant.
    Type: Grant
    Filed: September 22, 1995
    Date of Patent: May 13, 1997
    Assignee: Pilkington Barnes Hind, Inc.
    Inventors: Syed H. Askari, Hermann H. Neidlinger
  • Patent number: 5621018
    Abstract: Compounds of formula I: ##STR1## are disclosed. The compounds are photoinitiators which can be functionalized by means of ethylenic groups or can be bonded to H-active substances, in order, for example, to modify surfaces by means of photopolymerizable substances. The compounds are especially useful in the manufacture of contact lenses.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: April 15, 1997
    Assignee: CIBA GEIGY Corporation
    Inventors: Peter Chabrecek, Dieter Lohmann
  • Patent number: 5612391
    Abstract: Contact lenses formed from compounds of formula I: ##STR1## are disclosed. The compounds are photoinitiators which can be functionalized by means of ethylenic groups or can be bonded to H-active substances, in order, for example, to modify surfaces by means of photopolymerizable substances. The compounds are especially useful in the manufacture of contact lenses.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: March 18, 1997
    Assignee: Ciba Geigy Corporation
    Inventors: Peter Chabrecek, Dieter Lohmann
  • Patent number: 5605942
    Abstract: A contact lens material comprising a condensation polymer having a recurring unit represented by the formula (I): ##STR1## wherein R.sup.1 is --C(CF.sub.3).sub.2 -- or ##STR2## R.sup.2 is a group represented by the formula: ##STR3## in which l is an integer of 1 to 3, m is an integer of 1 to 15 and n is an integer of 1 to 3, ##STR4## in which u is an integer of 1 to 3 and v is an integer of 1 to 3, a group represented by the formula (II): ##STR5## wherein R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are the same or different and each is hydrogen atom or an alkyl group having 1 to 5 carbon atoms, or a group represented by the formula (III): ##STR6## wherein R.sup.7 is --C(CF.sub.3).sub.2 --, ##STR7## or a direct bond, and R.sup.8 and R.sup.9 are the same or different and each is an alkyl group having 1 to 3 carbon atoms, a fluoroalkyl group having 1 to 3 carbon atoms, hydrogen atom, hydroxyl group or carboxyl group.
    Type: Grant
    Filed: January 17, 1996
    Date of Patent: February 25, 1997
    Assignees: Menicon Co., Ltd., Shin-Etsu Chemical Co., Ltd.
    Inventors: Haruyuki Hiratani, Kazuhiko Nakada, Shoji Ichinohe, Toshio Yamazaki, Hideto Kato