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US 8,940,045 B2Granted
Intraocular lens
AssigneeSanten Pharmaceutical Co., Ltd.
InventorsAnand Doraiswamy, Jensen Buck, Daniel Hamilton
Life of this patent
Estimating the term…
Abstract
An intraocular lens comprises an optic and at least two haptics, each of which comprises a step feature that protrudes from a posterior surface of the haptic to prevent posterior capsular opacification.
Claims15
An intraocular lens comprising:
- an optic being substantially circular and having an optic anterior surface, an optic posterior surface, and an optic edge surface at a periphery of the optic, the optic edge surface connecting the optic anterior surface and the optic posterior surface;
- and
- at least two haptics, each haptic having a shoulder segment coupled to the periphery of the optic, an arm segment extending out from the shoulder segment, a haptic anterior surface, and a haptic posterior surface, the haptic posterior surface comprising a step feature at the shoulder segment,
- wherein the haptic posterior surface of each haptic comprises a leading edge and a trailing edge, and the step feature extends from the leading edge to the trailing edge,
- wherein the haptic anterior surface of each haptic comprises a taper surface extending across the shoulder segment, and the taper surface includes a curved and concave surface,
- wherein the taper surface is bounded in plan view by diameter D2 and diameter D3, the taper surface intersects the optic at diameter D2, the taper surface intersects an anterior arm surface of the haptic at diameter D3, and the anterior arm surface is planar, and
- wherein a thickness of the shoulder segment decreases continuously from diameter D3 to diameter D2, and the thickness is measured in a direction parallel to an optical axis of the optic.
4 more elements
Dependencies are inferred from the claim text.