×

Silicone hydrogel lens with a crosslinked hydrophilic coating

  • US 8,944,592 B2
  • Filed: 07/23/2013
  • Issued: 02/03/2015
  • Est. Priority Date: 07/30/2010
  • Status: Active Grant
First Claim
Patent Images

1. A readily-usable silicone hydrogel contact lens, comprising a silicone hydrogel material and a crosslinked hydrophilic coating thereon, wherein the crosslinked hydrophilic coating is attached onto the silicone hydrogel contact lens through neutral, hydroxyl-containing covalent linkages each of which is obtained by reacting, in a crosslinking reaction at a temperature from about 40°

  • C. to about 140°

    C., one positively-charged azetidinium group with one functional group selected from the group consisting of amino groups, thiol groups and carboxylate ions, wherein the readily-usable silicone hydrogel contact lens has a surface hydrophilicity/wettability characterized by having an averaged water contact angle of about 90 degrees or less.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×