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;
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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 %.
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Abstract
The present invention relates to ionic silicone hydrogel polymers comprising at least one pharmaceutical or nutriceutical component and displaying improved lysozyme uptake, low contact angle and reduced water soluble polymeric ammonium salt uptake.
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Citations
26 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 comprising at least one pharmaceutical compound or nutriceutical compound, and optional additional minor polymerizable components selected from the group consisting of visibility tint and dyes, UV absorbers, photochromic 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 %. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification