摘要:
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.
摘要:
Polysiloxanes having vinyl or epoxy functionality. The polysiloxanes are used to form polymer-based materials having properties particularly suited for biomedical device applications. The polysiloxanes are of general formula I: wherein R is a C2-10 alkenyl, a C2-10 alkyl with an epoxy group or a C5-C7cycloalkyl with an epoxy group; R2, R3 and R4 are each independently selected from the group consisting of hydrogen, C1-4 alkyl, C1-4 fluoroalkyl, optionally substituted phenyl and optionally substituted benzyl; A is —OH or —NHR5, wherein R5 is hydrogen or a C1-3 alkyl; and B is —R1-A or —R6, wherein R1 is a linking group having an alkylene group with 2 to 8 carbon atoms wherein the alkylene group optionally includes ether, urethane or ureido linkages; and R6 is selected from the group consisting of C1-4 alkyl, optionally substituted phenyl or optionally substituted benzyl; and m and n are integers with an m:n ratio from 30:1 to 3:1.
摘要:
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 hydrophilic polymer having one or more non-ethylenically-unsaturated carboxylic acid terminal groups.
摘要:
A process for treating a silicone hydrogel biomedical device, especially an ophthalmic lens such as a contact lens, involves: immersing the silicone hydrogel biomedical device with a mixture of an organic solvent and a hydrophilic, polymeric material, for a sufficient time that the device is swollen in volume by at least 30%; and removing the organic solvent from the device while retaining at least a portion of the hydrophilic polymeric material therein.
摘要:
A macromonomer comprises an α,β-conjugated terminal carboxylic group and a plurality of hydrophilic groups. Polymeric materials comprise such a macromonomer are used advantageously to provide a hydrophilic or lubricious (or both) coating on medical devices. Such polymeric materials can comprise units of other hydrophilic monomers.
摘要:
A silicone hydrogel comprising monomeric units of one or more amino monomers, wherein the amino monomers are of formula IA, IB, IIA or IIB and monomeric units of one or more silicone monomers wherein R1, R2 and R3 are independently selected from hydrogen, C1-C6 alkyl or CH2OH; R4 is a C1-C10 alkyl optionally substituted with hydroxyl or carboxylic acid; E is a polymerizable group; X is an anion suitable for quaternary nitrogen; and n is 0, 1, 2, or 3 and m is an integer from 1 to 8.
摘要:
A method for making a surface modified biomedical device is disclosed, the method comprising contacting a surface of a biomedical device with a copolymer which is the reaction product of one or more polymerizable polyhydric alcohols and one or more polymerizable fluorine-containing monomers.
摘要:
Prepolymers comprising at least one block of Formula II and terminated with a polymerizable ethylenically unsaturated radical are useful in hydrogel materials are disclosed: wherein n, R, R1, R2 and X+ are as defined herein.
摘要:
Disclosed are methods for making a surface modified biomedical device involving (a) exposing a biomedical device having a plurality of biomedical device surface functional groups to one or more ethylenically unsaturated-containing organic compounds having a reactive group that is co-reactive to the biomedical device surface functional groups of the biomedical device; and (b) graft polymerizing a hydrophilic reactive monomer having a complementary reactive functionality with the ethylenically unsaturated functionalities of the ethylenically unsaturated-containing organic compounds on or near the surface of the biomedical device thus forming a biocompatible surface on the biomedical device. The methods disclosed are two-step methods and do not include any additional surface treatment steps.
摘要:
An ophthalmic composition comprising a copolymer and one or more cationic antimicrobial components. The copolymer comprises monomeric units of one or more polymerizable alcohols or polymerizable polyols, and monomeric units of one or more polymerizable carboxylic acids. Also, the composition has an osmolality from 200 mOsmol/kg to 400 mOsmol/kg.