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    • 2. 发明授权
    • Cleaning hydrophilic contact lenses by electrochemical means
    • 用电化学方法清洁亲水性隐形眼镜
    • US5451303A
    • 1995-09-19
    • US175883
    • 1993-12-30
    • David J. HeilerDavid A. MarshMatthew S. JonasseRick Panicucci
    • David J. HeilerDavid A. MarshMatthew S. JonasseRick Panicucci
    • G02C13/00B08B3/08C11D3/00C11D3/39C11D7/18C11D7/38G02C7/04C25B7/00
    • C11D3/3942C11D3/0042C11D3/0078C11D3/39
    • 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 sufficient 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 thiosulfate, as the reducing agent. A lens is coated 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.
    • 描述了一种用于清洁和消毒隐形眼镜的组合物和方法,所述隐形眼镜采用施加到使得污染沉积物迁移的透镜的电场。 本发明的组合物包括具有不同电化学电位的一对组分材料,其中材料基本上包含在其中每个材料在与透镜的相对侧接触时保持足够物理分离的形式,使得两者之间的电化学电位差 材料足以引起带电的污染沉积物从透镜迁移。 本发明的方法需要将污染的透镜放置在具有不同电化学电位的一对组分材料之间,其中保持物理分离,优选通过将一种组分包含在凝胶中而另一种组分在溶液或另一种凝胶中。 优选地,一对材料中的一种组分是氧化剂,而第二组分是还原剂。 合适的一个例子是悬浮在卡波胶中的过氧化氢和硫代硫酸钠的溶液作为还原剂。 将透镜涂覆有氧化剂凝胶,置于还原剂溶液中并在室温下保持2-4小时,其中建立在该对之间的电化学场达到约29%的蛋白质去除。