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    • 15. 发明授权
    • Fixation member for an intraocular lens
    • 眼内透镜固定件
    • US5152789A
    • 1992-10-06
    • US699496
    • 1991-05-14
    • Timothy R. Willis
    • Timothy R. Willis
    • A61F2/16
    • A61F2/16A61F2002/1683
    • An intraocular lens comprising a deformable optic and a fixation member for use in supporting the optic in the eye. The fixation member includes an annulus surrounding the optic and a plurality of resilient struts interconnecting the optic with the annulus. The struts tend to be compressively loaded by the posterior capsule of the eye after implantation. To prevent buckling of the resilient struts in an axial direction due to the imposed compressive loads, the struts are curved in a circumferential direction when in an unloaded state, thereby being predisposed to further bow in the same circumferential direction upon imposition of the compressive load. This predisposition to bow circumferentially avoids severe problems incurred if the struts are permitted to buckle axially, such as tilting of the optic and impaired vision for the patient.
    • 一种眼内透镜,包括可变形光学元件和用于支撑眼睛中的光学元件的固定构件。 固定构件包括围绕光学元件的环形空间和将光学元件与环形空间相互连接的多个弹性支柱。 支架倾向于在植入后被眼后囊压缩加载。 为了防止由于施加的压缩载荷而导致的弹性支柱在轴向上的弯曲,当处于无负载状态时,支柱在圆周方向上弯曲,从而在施加压缩载荷时倾向于在相同的圆周方向上进一步弯曲。 如果允许支柱轴向弯曲,例如镜片的倾斜和患者的视力受损,这种弓形周围的倾向避免了严重的问题。