Medical devices having homogeneous charge density and methods for making same
First Claim
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1. A silicone hydrogel formed from a reactive mixture comprisingmajor polymerizable components comprising at least one reactive silicone-containing component, at least one reactive ionic monomer, crosslinker, and optional reactive hydrophilic components;
- andminor components that are optionally polymerizable selected from the group consisting of visibility tint and dyes, UV absorbers, photochromic compounds, pharmaceutical compounds, nutriceutical compounds, and mixtures thereof;
wherein said major polymerizable components comprise a single reactive functionality; and
wherein any polymerizable components in the reaction mixture which have a reactive functionality different than said single reactive functionality are present in a concentration less than 0.5 mol %,wherein said single reactive functionality is selected from (meth)acrylates.
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Abstract
The present invention relates to ionic silicone hydrogel polymers displaying improved lysozyme uptake, low contact angle and reduced water soluble polymeric ammonium salt uptake.
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12 Claims
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1. A silicone hydrogel formed from a reactive mixture comprising
major polymerizable components comprising at least one reactive silicone-containing component, at least one reactive ionic monomer, crosslinker, and optional reactive hydrophilic components; - and
minor components that are optionally polymerizable selected from the group consisting of visibility tint and dyes, UV absorbers, photochromic compounds, pharmaceutical compounds, nutriceutical compounds, and mixtures thereof; wherein said major polymerizable components comprise a single reactive functionality; and
wherein any polymerizable components in the reaction mixture which have a reactive functionality different than said single reactive functionality are present in a concentration less than 0.5 mol %,wherein said single reactive functionality is selected from (meth)acrylates. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification