发明公开
- 专利标题: CLEANING HYDROPHILIC CONTACT LENSES BY ELECTROCHEMICAL MEANS
- 专利标题(中): 清洗的,电化学方法亲水性隐形眼镜
-
申请号: EP95906731.0申请日: 1994-12-28
-
公开(公告)号: EP0737240A1公开(公告)日: 1996-10-16
- 发明人: HEILER, David, J. , MARSH, David, A. , JONASSE, Matthew, S. , Panicucci, Rick
- 申请人: BAUSCH & LOMB INCORPORATED
- 申请人地址: One Chase Square, P.O. Box 54 Rochester, New York 14601-0054 US
- 专利权人: BAUSCH & LOMB INCORPORATED
- 当前专利权人: BAUSCH & LOMB INCORPORATED
- 当前专利权人地址: One Chase Square, P.O. Box 54 Rochester, New York 14601-0054 US
- 代理机构: Rackham, Anthony Charles, et al
- 优先权: US19930175883 19931230
- 国际公布: WO1995018205 19950706
- 主分类号: G02C13
- IPC分类号: G02C13 ; B08B3 ; C11D3 ; C11D7 ; G02C7
摘要:
A composition and method for cleaning and disinfecting of contact lenses that employ an electrical field applied to a lens that causes contaminating deposits to migrate therefrom is described. The composition of the invention includes a pair of component materials having different electrochemical potentials wherein the materials are substantially contained in a form wherein each material remains sufficiently physically separated when in contact with opposite sides of the lens such that the difference in electrochemical potential between the two materials is sufficeint to cause charged contaminating deposits to migrate from the lens. The method of the invention requires placing a contaminated lens between a pair of component materials having different electrochemical potentials wherein physical separation is maintained, preferably, by including one of the components in a gel while the other component is in solution or another gel. Preferably, one component of the pair of materials is an oxidizing agent while the second component is a reducing agent. An example of a suitable pair is hydrogen peroxide suspended in a carbopol gel and a solution of sodium theosulfate, as the reducing agent. A lens is coatd with the oxidant gel, placed in the reductant solution and held at room temperature for 2-4 hours, wherein the electrochemical field established between the pair achieves about a 29 % protein removal.
信息查询