Silicon-containing Organic Polymer Patents (Class 523/107)
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Patent number: 7625551Abstract: Two-part dental impression material curable by a metathesis reaction comprising a base paste with first and second resin components each containing at least two cycloolefin groups per molecule curable by a metathesis reaction with a metathesis catalyst. The first resin includes a urethane polyether or polyester carboxylate backbone terminated with the cycloolefin groups and the second resin includes an alkoxy-siloxane polyether or polyester carboxylate backbone terminated with the cycloolefin groups. The metathesis catalyst can be a ruthenium carbene complex catalyst.Type: GrantFiled: February 21, 2006Date of Patent: December 1, 2009Assignee: Kerr CorporationInventor: Christos Angeletakis
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Patent number: 7622512Abstract: The present invention relates to polymeric compositions useful in the manufacture of biocompatible medical devices. More particularly, the present invention relates to certain cationic monomers capable of polymerization to form polymeric compositions having desirable physical characteristics useful in the manufacture of ophthalmic devices. Such properties include the ability to extract the polymerized medical devices with water. This avoids the use of organic solvents as is typical in the art. The polymeric compositions comprise polymerized cationic hydrophilic siloxanyl monomers.Type: GrantFiled: January 27, 2006Date of Patent: November 24, 2009Assignee: Bausch & Lomb IncorporatedInventors: Derek Schorzman, Joseph C. Salamone, Daniel Ammon, Jay Kunzler, Jeffrey G. Linhardt
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Publication number: 20090264553Abstract: Silicone hydrogel contact lenses having ophthalmically acceptable surface wettabilities are obtained from pre-extracted polymerized silicone hydrogel contact lens products having relatively large amounts of removable or extractable materials. The silicone hydrogel contact lenses can be obtained from non-polar resin based contact lens molds and without surface treatments or an interpenetrating polymeric network of a polymeric wetting agent. Related lens products, polymerizable compositions, and methods are also described.Type: ApplicationFiled: July 1, 2009Publication date: October 22, 2009Applicant: COOPERVISION INTERNATIONAL HOLDING COMPANY, L.P.Inventors: Charlie Chen, Ye Hong, Nick Manesis
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Publication number: 20090264552Abstract: Provided is an optical synthetic resin composed of: a synthetic resin; and fine particles dispersed in the synthetic resin at a ratio of 0.1 vol % or more to 50 vol % or less, each having a maximum length of 1 nm or more to 30 nm or less, in which part of surfaces of the fine particles are modified with functional groups which themselves repel each other, and a distance between two arbitrary adjacent fine particles among the fine particles is in a range of 0.1 nm or more to 500 nm or less. The two arbitrary adjacent fine particles attract each other with an intermolecular force, thereby making it possible to provide an optical composite deviating from an additivity range.Type: ApplicationFiled: October 3, 2006Publication date: October 22, 2009Applicant: CANON KABUSHIKI KAISHAInventors: Yasuhiro Tanaka, Katsumoto Hosokawa, Kazutaka Takeuchi
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Patent number: 7601766Abstract: The present invention relates to polymeric compositions useful in the manufacture of biocompatible medical devices. More particularly, the present invention relates to certain carboxylic monomers capable of polymerization to form polymeric compositions having desirable physical characteristics useful in the manufacture of ophthalmic devices. The polymeric compositions comprise polymerized carboxylic hydrophilic siloxanyl monomers.Type: GrantFiled: June 30, 2006Date of Patent: October 13, 2009Assignee: Bausch & Lomb IncorporatedInventors: Derek Schorzman, Jay Kunzler, Joseph Salamone
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Publication number: 20090244479Abstract: Tinted ophthalmic devices, methods for their production, and non-crosslinked binding polymers used in their production are disclosed herein.Type: ApplicationFiled: March 20, 2009Publication date: October 1, 2009Inventors: Diana Zanini, Ryan David Palusak, Adam C. Reboul, Terry L. Spaulding, Frank F. Molock, JR., Ture Kindt-Larsen, Frederik R. Sleenstrup
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Publication number: 20090247662Abstract: A contact lens material which has high oxygen permeability and mechanical strength, and extremely small in an amount of remaining unpolymerized monomers, at the same time, low in a water absorption ratio and excellent in shape stability of a lens is provided. The contact lens material comprises a copolymer obtained by polymerizing copolymer components containing a particular silicone-containing monomer, wherein the total residual amount of unpolymerized monomer components remaining in the copolymer based on the copolymer is at most 3.5% by weight, an oxygen permeability coefficient of the copolymer is at least 130×10?11 (cm2/sec)·(mLO2)/(mL·mmHg), and a water absorption ratio of the copolymer is at most 0.3% by weight.Type: ApplicationFiled: June 12, 2009Publication date: October 1, 2009Inventors: Masahiro Matsumoto, Mimi Hashimoto
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Publication number: 20090227702Abstract: A new high refractive index, oxygen permeable contact lens material and method for making the same. The material comprises an alkyl acrylate, a fluoro acrylate, a silicone acrylate, a polymerizable vinyl monomer having a substituted aromatic ring and/or heterocyclic ring structure, a multifunctional acrylate, and a polymerizable vinyl monomer having a heterocyclic ring structure.Type: ApplicationFiled: March 6, 2009Publication date: September 10, 2009Inventors: Hermann Neidlinger, Ewa Cichacz, William E. Meyers
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Patent number: 7585900Abstract: Disclosed are soft, high refractive index, acrylic materials. These materials, especially useful as intraocular lens materials, contain an aryl acrylic hydrophobic monomer as the single principal device-forming monomer and a tack-reducing macromer additive. In addition to their use as intraocular lens materials, the present materials are also suitable for use in other ophthalmic or otorhinolaryngological devices, such as contact lenses, keratoprostheses, corneal inlays or rings; otological ventilation tubes and nasal implants.Type: GrantFiled: July 20, 2007Date of Patent: September 8, 2009Assignee: Alcon, Inc.Inventors: Diana M. Cordova, Mutlu Karakelle, Chance Lehman, Douglas C. Schlueter, Joseph I. Weinschenk, III
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Patent number: 7572841Abstract: Silicone hydrogel contact lenses having ophthalmically acceptable surface wettabilities are obtained from pre-extracted polymerized silicone hydrogel contact lens products having relatively large amounts of removable or extractable materials. The silicone hydrogel contact lenses can be obtained from non-polar resin based contact lens molds and without surface treatments or an interpenetrating polymeric network of a polymeric wetting agent. Related lens products, polymerizable compositions, and methods are also described.Type: GrantFiled: June 11, 2007Date of Patent: August 11, 2009Assignee: CooperVision International Holding Company, LPInventors: Charlie Chen, Ye Hong, Nick Manesis
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Publication number: 20090191256Abstract: An ophthalmic device is disclosed that is a polymerization product of a monomeric mixture comprising (a) a major amount of a non-silicone-containing hydrophilic monomer; (b) a hydrophobic monomer; and (c) a crosslinking agent, wherein the ophthalmic device has an equilibrium water content of at least about 70 weight percent and further wherein the ophthalmic device has an evaporative dehydration barrier layer on the surface thereof. A method for the mitigation of evaporative corneal dehydration employing the high water content ophthalmic device is also disclosed.Type: ApplicationFiled: January 8, 2009Publication date: July 30, 2009Inventors: Richard I. Blackwell, Joseph C. Salamone, Jay F. Kunzler
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Patent number: 7566746Abstract: 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: GrantFiled: October 31, 2007Date of Patent: July 28, 2009Assignee: Novartis AGInventors: Lynn Cook Winterton, Juergen Vogt, John Martin Lally, Friedrich Stockinger
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Patent number: 7566754Abstract: The invention relates to novel crosslinkable copolymers which are obtainable by (a) copolymerizing at least one hydrophilic monomer having one ethylenically unsaturated double bond and at least one crosslinker comprising two or more ethylenically unsaturated double bonds in the presence of a chain transfer agent having a functional group; and (b) reacting one or more functional groups of the resulting copolymer with an organic compound having an ethylenically unsaturated group. The crosslinkable copolymers of the invention are especially useful for the manufacture of biomedical mouldings, for example ophthalmic mouldings such as in particular contact lenses.Type: GrantFiled: August 10, 2007Date of Patent: July 28, 2009Assignee: Novartis AGInventors: Beat Müller, Alain Laurent, Veerle Coessens, Aaldert Rens Molenberg
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Publication number: 20090168013Abstract: A method for reducing the modulus of polymer siloxane hydrogel compositions by employing monomeric polysiloxanes endcapped with trimethylsilyl to reduce the crosslinking density of the hydrogel. The synthesis consists of a single vessel acid catalyzed ring opening polymerization and may be employed to produce copolymers useful as hydrogel contact lens materials.Type: ApplicationFiled: November 12, 2008Publication date: July 2, 2009Inventors: Jay F. Kunzler, Richard M. Ozark, Joseph A. McGee, Joseph C. Salamone
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Publication number: 20090170976Abstract: A polysiloxane-based prepolymer of a three-dimensional network structure produced by hydrolysis-condensation of a first mixture having a tetra-alkoxysilane compound, an ethylenically unsaturated organosiloxane monomer, and a hydrophilic silicon-containing polyfunctional monomer. A hydrogel is prepared by polymerizing a second mixture having the aforesaid polysiloxane-based prepolymer, an acrylated silicon-containing monomer, and an ethylenically unsaturated hydrophilic monomer.Type: ApplicationFiled: December 1, 2008Publication date: July 2, 2009Inventors: Ching-Ping Huang, Roy Wu, Ken-Yuan Chang
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Publication number: 20090156708Abstract: Biomedical devices are provided herein which are formed from a polymerization product of a mixture comprising (a) a copolymer which is the reaction product of one or more polymerizable polyhydric alcohols and one or more polymerizable fluorine-containing monomers; and (b) a biomedical device-forming comonomer.Type: ApplicationFiled: December 8, 2008Publication date: June 18, 2009Inventors: Yu-Chin Lai, Weihong Lang
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Publication number: 20090141234Abstract: Silicone hydrogels formed from a hydrated polymerization product of a monomer mixture comprising (a) a major amount of a non-silicone-containing hydrophilic monomer; and (b) a minor amount of a silicone-containing monomer, wherein the hydrogel has a water content of greater than 50 weight percent are disclosed.Type: ApplicationFiled: November 10, 2008Publication date: June 4, 2009Inventors: Richard I. Blackwell, Jay F. Kunzler, Amy Jasek
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Publication number: 20090143499Abstract: The invention provide a new class of silicone-containing prepolymers containing poly(oxyalkylene) blocks, polysiloxane blocks, and actinically-crosslinkable groups which are acryl groups, thiol groups, ene-containing groups or combinations thereof. A preopolymr of the invention is prepared in a one-pot procedure according to the Micahel addition of thiol to electron deficient alkenes, such as ?,?-unsaturated carbonyl compounds, without need for additional reaction step(s) to introduce actinically crosslinkable groups. The present invention is also related to silicone hydrogel contact lenses made from this class of silicone-containing prepolymers and to methods for making the silicone hydrogel contact lenses.Type: ApplicationFiled: November 20, 2008Publication date: June 4, 2009Inventors: Frank Chang, Guigui Wang
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Patent number: 7540609Abstract: Silicone hydrogel contact lenses having ophthalmically acceptable surface wettabilities are obtained from pre-extracted polymerized silicone hydrogel contact lens products produced from a polymerizable composition comprising a combination of particular components. The silicone hydrogel contact lenses can be obtained from non-polar resin based contact lens molds and without surface treatments or an interpenetrating polymeric network of a polymeric wetting agent. Related lens products, polymerizable compositions, and methods are also described.Type: GrantFiled: June 11, 2007Date of Patent: June 2, 2009Assignee: CooperVision International Holding Company, LPInventors: Charlie Chen, Ye Hong, Nick Manesis
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Patent number: 7538146Abstract: 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: GrantFiled: December 30, 2006Date of Patent: May 26, 2009Assignee: CIBA Vision CorporationInventors: Paul Clement Nicolson, Richard Carlton Baron, Peter Chabrecek, John Court, Angelika Domschke, Hans Jorge Griesser, Arthur Ho, Jens Hopken, Bronwyn Glenice Laycock, Qin Liu, Dieter Lohmann, Gordon Francis Meijs, Eric Papaspiliotopoulos, Judy Smith Riffle, Klaus Schindhelm, Deborah Sweeney, Wilson Leonard Terry, Jr., Jurgen Vogt, Lynn Cook Winterton
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Patent number: 7521519Abstract: The invention relates to novel crosslinkable copolymers of formula wherein the variables are as defined in the claims. The copolymers of the invention are especially useful for the manufacture of biomedical molding, for example ophthalmic moldings such as in particular contact lenses.Type: GrantFiled: March 14, 2000Date of Patent: April 21, 2009Assignee: Novartis AGInventors: Thomas Hirt, Jacalyn Marie Schremmer, Troy Vernon Holland, Dieter Lohmann
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Patent number: 7521488Abstract: The invention provides silicone hydrogel contact lenses that exhibit reduced back surface debris and reduced incidence of superior epithelial arcurate lesions.Type: GrantFiled: January 5, 2005Date of Patent: April 21, 2009Assignee: Johnson & Johnson Vision Care, Inc.Inventors: Robert B. Steffen, David C. Turner, Douglas Vanderlaan
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Patent number: 7482416Abstract: Provided are a novel class of fumaric- and itaconic-containing prepolymers and compositions comprising the prepolymers used in the manufacture of medical devices.Type: GrantFiled: December 13, 2007Date of Patent: January 27, 2009Assignee: Bausch & Lomb IncorporatedInventors: Yu-Chin Lai, Edmond T. Quinn
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Publication number: 20090018233Abstract: A synthetic route to polymers comprised of at least two monomers each with a very different reactivity ratio by using a corresponding crosslink agent for each monomer. Novel crosslink agents are described that provide for the copolymerization of at least one hydrophilic monomer with at least one lens monomer typically used to prepare materials for ophthalmic lenses. The new crosslink agents have a relatively high selectivity for the hydrophilic monomer and limited reactivity with the crosslink agent used to polymerize the lens monomer.Type: ApplicationFiled: July 8, 2008Publication date: January 15, 2009Inventors: Ivan M. Nunez, Joseph A. McGee, David E. Seelye
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Publication number: 20090012205Abstract: A transparent gel is disclosed which has an interpenetrating polymer network of a copolymer containing a polysiloxane structure and a polycarbonate structure and a hydrophilic polymer obtained by polymerizing a hydrophilic monomer. The transparent gel is useful as a cultivation substrate, a container for storage and an ophthalmic material, comprising an easily synthesizable and purifiable silicon-containing resin, wherein a gel strength, transparency, oxygen permeability, birefringence and other characteristics are excellent.Type: ApplicationFiled: January 13, 2006Publication date: January 8, 2009Inventors: Kazuhiko Nakada, Takahito Nakase, Takahiro Adachi, Akira Yamamoto, Masahiko Minemura
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Patent number: 7468397Abstract: The present invention relates to polymeric compositions useful in the manufacture of biocompatible medical devices. More particularly, the present invention relates to certain cationic monomers capable of polymerization to form polymeric compositions having desirable physical characteristics useful in the manufacture of ophthalmic devices. Such properties include the ability to extract the polymerized medical devices with water. This avoids the use of organic solvents as is typical in the art. The polymer compositions comprise polymerized silicon-containing monomers end-capped with polymerizable cationic hydrophilic groups.Type: GrantFiled: June 30, 2006Date of Patent: December 23, 2008Assignee: Bausch & Lomb IncorporatedInventors: Derek Schorzman, Jay Kunzler
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Patent number: 7468398Abstract: 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: GrantFiled: June 7, 2005Date of Patent: December 23, 2008Assignee: CIBA Vision CorporationInventors: Paul Clement Nicolson, Richard Carlton Baron, Peter Chabrecek, John Court, Angelika Domschke, Hans Jorg Griesser, Arthur Ho, Jens Hopken, Bronwyn Glenice Laycock, Qin Liu, Dieter Lohmann, Gordon Francis Meijs, Eric Papspiliotopoulos, Judy Smith Riffle, Klaus Schindhelm, Deborah Sweeney, Wilson Leonard Terry, Jr., Jurgen Vogt, Lynn Cook Winterton
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Publication number: 20080291391Abstract: A hybrid contact lens includes a substantially rigid center portion and a substantially flexible skirt portion connected to the center portion. The skirt portion is formed using xerogels compatible with diluents comprising at least one selected from polylactic acid, polyglycolic acid, lactide, glycolide, a polyacetal, a cyclic acetal, a polyketal, a cyclic ketal, a polyorthoester, a cyclic orthoester, di-t-butyl-dicarbonate, tris(trimethylsilyl)amine, and 2,2,2-trifluoroacetamide. These diluents are formulated to function as a stand-in for water in the xerogel polymer, allowing the xerogel to form and bond to the rigid center portion in its fully expanded state. Upon hydration of the hybrid lens, substantially little dimensional change, and thus substantially little distortion, is obtained in the skirt portion.Type: ApplicationFiled: May 25, 2007Publication date: November 27, 2008Inventors: William E. Meyers, Hermann H. Neidlinger, Ramazan Benrashid, Ali Dahi, Jenny Xuan Huynh, Joseph Collins
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Patent number: 7456240Abstract: The invention relates to ophthalmic molding formulations and to tinted, high Dk ophthalmic moldings. This invention also relates to a method for making a tinted ophthalmic molding. The method comprises: (a) providing a polymer precursor having cross-linkable or polymerizable groups; (b) providing a pigment dispersion comprising an inorganic or organic pigment and a dispersing agent; (c) mixing the pigment dispersion with the polymer precursor to form a tinted prepolymer mixture; (d) dispensing the tinted prepolymer mixture into a mold; and (e) forming a tinted ophthalmic molding from the tinted prepolymer mixture, the molding comprising a polymer matrix having the pigment entrapped therein. With this method, tinted ophthalmic moldings, particularly edge-to-edge soft, tinted contact lenses having improved properties, are prepared with an improved efficiency.Type: GrantFiled: January 11, 2006Date of Patent: November 25, 2008Assignee: Novartis AGInventors: Richard Charles Turek, Jacalyn Mary Schremmer
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Patent number: 7423074Abstract: A polysiloxane copolymer that is useful for forming biomedical devices comprises blocks (I) and (II) and is terminated at each end with an ethylenically unsaturated radical: (*Dii*Diol*Dii*PS)x ??(I) (*Dii*PS)y ??(II) wherein: each Dii is independently a diradical residue of a diisocyanate; each Diol is independently a diradical residue of a diol having 1 to 10 carbon atoms; each PS is independently a diradical residue of a polysiloxane-containing diol or diamine; each * is independently —NH—CO—NH—, —NH—COO— or —OCO—NH—: x represents the number of blocks (I) and is at least 2, and y represents the number of blocks (II) and is at least 1.Type: GrantFiled: December 2, 2005Date of Patent: September 9, 2008Assignee: Bausch & Lomb IncorporatedInventors: Yu-Chin Lai, Weihong Lang, Edmond T. Quinn
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Patent number: 7423108Abstract: Siloxy-containing monomers, macromonomers, or polymers have at least a siloxy-containing side group that comprises a refractive-index increasing substituent. Polymeric compositions comprising such siloxy-containing monomers, macromonomers, or polymers are advantageously used for making ophthalmic devices, such as intraocular lenses, contact lenses, corneal rings, corneal inlays, and keratoprostheses.Type: GrantFiled: December 16, 2005Date of Patent: September 9, 2008Assignee: Bausch & Lomb IncorporatedInventors: Jay F. Kunzler, Joseph C. Salamone, Richard M. Ozark
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Patent number: 7407992Abstract: High refractive index and optically clear copoly(carbosilane and siloxane) elastomers and ophthalmic lenses made therefrom are provided. The elastomers are comprised of copolymers having carbosilane repeat units and siloxane repeat units. The copolymers and ophthalmic lenses of the present invention have a high refractive index and excellent folding recoverability.Type: GrantFiled: June 30, 2006Date of Patent: August 5, 2008Assignee: STAAR Surgical CompanyInventor: Xiugao Liao
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Patent number: 7399795Abstract: Provided are surface modified contact lenses formed from one or more fumaric- or itaconic-containing prepolymers having reactive functionality that is complimentary to reactive hydrophilic polymers.Type: GrantFiled: May 30, 2006Date of Patent: July 15, 2008Assignee: Bausch & Lomb IncorporatedInventors: Yu-Chin Lai, Edmond T. Quinn
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Patent number: 7390863Abstract: A polymeric material having enhanced oxygen permeability and ion and water transport rates comprises units of a first monomer and a second monomer, which comprises linear poly(ethylene oxide), cyclic poly(ethylene oxide), or combinations thereof. Medical devices, such as ophthalmic devices, are made from such polymeric materials.Type: GrantFiled: August 30, 2005Date of Patent: June 24, 2008Assignee: Bausch & Lomb IncorporatedInventors: Joseph C. Salamone, Jay F. Kunzler
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Publication number: 20080021129Abstract: Disclosed are soft, high refractive index, acrylic materials. These materials, especially useful as intraocular lens materials, contain an aryl acrylic hydrophobic monomer as the single principal device-forming monomer and a tack-reducing macromer additive. In addition to their use as intraocular lens materials, the present materials are also suitable for use in other ophthalmic or otorhinolaryngological devices, such as contact lenses, keratoprostheses, corneal inlays or rings; otological ventilation tubes and nasal implants.Type: ApplicationFiled: July 20, 2007Publication date: January 24, 2008Applicant: ALCON MANUFACTURING LTD.Inventors: Diana M. Cordova, Mutlu Karakelle, Chance Lehman, Douglas C. Schlueter, Joseph I. Weinschenk
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Patent number: 7297160Abstract: Hydrophilic, arylsiloxy-containing macromonomers have at least a terminal hydrophilic group attached to an arylsiloxy group. The aryl groups attached to siloxy groups can be substituted with other hydrophilic groups. Polymers comprising such hydrophilic, arylsiloxy-containing macromonomers avoid or reduce the risk of forming vacuoles of absorbed water. Furthermore, such polymers have high refractive index, and, thus, are advantageously used for making ophthalmic devices, such as intraocular lenses, contact lenses, corneal rings, corneal inlays, and keratoprostheses.Type: GrantFiled: June 15, 2005Date of Patent: November 20, 2007Assignee: Bausch & Lomb IncorporatedInventors: Joseph C. Salamone, Jay F. Kunzler, Richard M. Ozark
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Patent number: 7297725Abstract: 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: GrantFiled: July 24, 2002Date of Patent: November 20, 2007Assignee: Novartis AGInventors: Lynn Cook Winterton, Juergen Vogt, John Martin Lally, Friedrich Stockinger
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Patent number: 7279507Abstract: An interpenetrating polymer network (IPN) composition and a process for the manufacture of hydrogel contact lens using the invention material. The polymeric materials are formed by polymerization of: (1) an unsaturated alkyl(meth)acrylate or its derivatives such as 2-hydroxyethyl methacrylate as the principle monomer; (2) optionally vinyl containing comonomer(s) to enhance the resulting hydrogel water absorbing capability; (3) polymerizable multi-functional crosslinking agent(s); (4) an irradiation initiator and/or thermal initiator; (5) optionally other additives to impart the resulting hydrogel specific properties such as ultra-violet blocking ability and handling colors; in the presence of a soluble, hydrophilic IPN agent such as polyvinylpyrrolidone (PVP) or poly-2-ethyl-2-oxazoline (PEOX) with a specific molecular weight range.Type: GrantFiled: August 2, 2004Date of Patent: October 9, 2007Assignee: CooperVision International Holding Company, LPInventors: Hopin Hu, Charles R. Briggs, Tung Nguyen, Hue Tran, Filene Rossberg
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Patent number: 7276544Abstract: A process for producing intraocular lenses (IOLs) capable of absorbing blue light and ultraviolet light using photo curing. Intraocular lenses so produced block blue light and ultraviolet light from reaching the retina of an eye implanted with the IOL. By blocking blue light and ultraviolet light from reaching the retina, the IOL thereby prevents potential damage to the retina.Type: GrantFiled: September 8, 2003Date of Patent: October 2, 2007Assignee: Bausch & Lomb IncorporatedInventors: Yu-Chin Lai, Dominic V. Ruscio, George F. Green
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Patent number: 7262232Abstract: 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: GrantFiled: April 28, 2005Date of Patent: August 28, 2007Assignee: CooperVision, Inc.Inventors: Jiri Sulc, Zuzana Krckova
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Patent number: 7261844Abstract: A photochromic contact lens having a period of time for discoloring the contact lens from a colored state to the uncolored state shortened, wherein the photochromic contact lens is made of an oxygen-permeable polymer material having a second-order transition point of not higher than 110° C., and formed to have an oxygen permeation coefficient of not less than 50, and wherein the contact lens contains a dye capable of exhibiting photochromism.Type: GrantFiled: July 6, 2005Date of Patent: August 28, 2007Assignee: Menicon Co., Ltd.Inventors: Sadayasu Tanikawa, Naotaka Kamiya, Shigeyasu Nagai
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Patent number: 7247692Abstract: This invention relates to wettable biomedical devices comprising amphiphilic block copolymers. The amphiphilic block copolymers are useful as internal wetting agents for biomedical applications, such as implantable devices, ophthalmic devices and in one embodiment, contact lenses.Type: GrantFiled: September 30, 2004Date of Patent: July 24, 2007Assignee: Johnson & Johnson Vision Care, Inc.Inventor: Walter R. Laredo
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Patent number: 7237893Abstract: The invention relates to novel photoinitiators and their use in light adjustable compositions. The initiatives comprise two or more multiphoton chromophores linked by a bridging compound. The bridging compound consists of a material that is compatible with the base material of the light adjustable composition. The novel photoinitiator permit the readjustment of light adjustable material without the need for significant amounts of photoabsorbers.Type: GrantFiled: October 21, 2005Date of Patent: July 3, 2007Inventors: Shiao H. Chang, Robert H. Grubbs, Julia A. Kornfield, Axel Brait, Patrick Case
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Patent number: 7138440Abstract: Optically transparent, relatively high refractive index polymeric compositions and ophthalmic devices such as intraocular lenses, contact lenses and corneal inlays made therefrom are described herein. The preferred polymeric compositions are produced through the polymerization of one or more siloxysilane monomers or the copolymerization of one or more siloxysilane monomers with one or more aromatic or non-aromatic non-siloxy monomers, hydrophobic monomers or hydrophilic monomers.Type: GrantFiled: January 21, 2005Date of Patent: November 21, 2006Assignee: Bausch & Lomb IncorporatedInventors: Joseph C. Salamone, Jay F. Kunzler, Richard M. Ozark, David E. Seelye
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Patent number: 7135521Abstract: The invention relates to ophthalmic molding formulations and to tinted, high Dk ophthalmic moldings. This invention also relates to a method for making a tinted ophthalmic molding. The method comprises: (a) providing a polymer precursor having cross-linkable or polymerizable groups; (b) providing a pigment dispersion comprising an inorganic or organic pigment and a dispersing agent; (c) mixing the pigment dispersion with the polymer precursor to form a tinted prepolymer mixture; (d) dispensing the tinted prepolymer mixture into a mold; and (e) forming a tinted ophthalmic molding from the tinted prepolymer mixture, the molding comprising a polymer matrix having the pigment entrapped therein. With this method, tinted ophthalmic moldings, particularly edge-to-edge soft, tinted contact lenses having improved properties, are prepared with an improved efficiency.Type: GrantFiled: June 30, 2004Date of Patent: November 14, 2006Assignee: Novartis AGInventors: Richard Charles Turek, Jacalyn Mary Schremmer
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Patent number: 7084188Abstract: Provided are surface modified contact lenses formed from one or more fumaric- or itaconic-containing prepolymers having reactive functionality that is complimentary to reactive hydrophilic polymers.Type: GrantFiled: December 5, 2003Date of Patent: August 1, 2006Assignee: Bausch & Lomb IncorporatedInventors: Yu-Chin Lai, Edmond T. Quinn
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Patent number: 7074873Abstract: Relatively high refractive index polymeric compositions and ophthalmic devices such as for example intraocular lenses and corneal inlays made therefrom are described herein. The preferred polymeric compositions are produced through the copolymerization of one or more aromatic-substituted polysiloxane prepolymers with one or more aromatic monomers, alkylated monomers or hydrophilic monomers.Type: GrantFiled: January 31, 2005Date of Patent: July 11, 2006Assignee: Rausch & Lomb IncorporatedInventors: Yu-Chin Lai, Edmond T. Quinn
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Patent number: 7071244Abstract: High refractive index and optically clear copoly(carbosilane and siloxane) elastomers and ophthalmic lenses made therefrom are provided. The elastomers are comprised of copolymers having carbosilane repeat units and siloxane repeat units. The copolymers and ophthalmic lenses of the present invention have a high refractive index and excellent folding recoverability.Type: GrantFiled: December 3, 2002Date of Patent: July 4, 2006Assignee: STAAR Surgical CompanyInventor: Xiugao Liao
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Patent number: 7060095Abstract: The present invention is directed to a supplemental endo capsular lens (SECL) and the method of inserting and embedding the SECL within either a gel or polymer, inside the capsule of the crystalline lens, during phaco-ersatz or similar surgical procedures in order to supplement the refractive power of the eye with a view to (1) correcting ametropia while (2) maintaining a useable amplitude of accommodation.Type: GrantFiled: May 8, 2001Date of Patent: June 13, 2006Assignee: Unisearch LimitedInventors: Arthur Ho, Paul Erickson, Fabrice Manns, Jean-Marie Parel
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Patent number: 7037954Abstract: An ocular lens material comprising a copolymer prepared by polymerization with heating of a monomer mixture and/or with irradiating a monomer mixture with ultraviolet ray by means of a molding method, the monomer mixture containing a polysiloxane macromonomer A, a Si-containing alkyl methacrylate B, a hydrophilic monomer C comprising NVP as C-1 and another hydrophilic monomer C-2, another monomer D and a crosslinkable monomer E comprising a crosslinkable monomer E-1 containing at least one group selected from acryloyl group, vinyl group and allyl group, and methacryloyl group, and a crosslinkable monomer E-2 containing at least two methacryloyl groups as main components, wherein (A+B)/C (weight ratio) is 30/70 to 70/30, A/B is 25/75 to 75/25, C-1/C-2 is 50/50 to 100/0, the amount of D is 0 to 20% by weight in the monomer mixture, which has high oxygen permeability, high mechanical strength, excellent surface wettability and low surface frictional property.Type: GrantFiled: August 27, 2003Date of Patent: May 2, 2006Assignee: Menicon Co., Ltd.Inventors: Masaki Baba, Tsuyoshi Watanabe, Kazuhiko Nakada